{ "id": "/qingyang/festivals/1964", "place": { "id": "12359313", "slug": "qingyang", "name": "Qingyang", "region": "Gansu, China", "country": "CN", "lat": 35.70976, "lon": 107.64455, "elevation_m": 1427, "tz": "Asia/Shanghai" }, "year": 1964, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-01-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33731, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-01-02T11:35:31+08:00", "utc": "1964-01-02T03:35:31Z", "ms": -189289469101.3327 }, "end": { "local": "1964-01-03T10:18:40+08:00", "utc": "1964-01-03T02:18:40Z", "ms": -189207679700.88757 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-02T11:35:31+08:00", "utc": "1964-01-02T03:35:31Z", "ms": -189289469101.3327 }, "end": { "local": "1964-01-03T10:18:40+08:00", "utc": "1964-01-03T02:18:40Z", "ms": -189207679700.88757 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-01-02", "window": { "start": { "local": "1964-01-02T20:57:41+08:00", "utc": "1964-01-02T12:57:41Z", "ms": -189255738593.00006 }, "end": { "local": "1964-01-02T20:57:41+08:00", "utc": "1964-01-02T12:57:41Z", "ms": -189255738593.00006 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-01-03", "window": { "start": { "local": "1964-01-03T22:02:29+08:00", "utc": "1964-01-03T14:02:29Z", "ms": -189165451236.8784 }, "end": { "local": "1964-01-03T22:02:29+08:00", "utc": "1964-01-03T14:02:29Z", "ms": -189165451236.8784 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:36 on Thu 2 Jan to 10:19 on Fri 3 Jan.", "fact": "1964-01-02T03:35:31Z → 1964-01-03T02:18:40Z" }, { "step": "kaala", "text": "Moonrise is at 20:58 on the 2nd and 22:02 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33731 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Thursday 2 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-02", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Thursday 2 January. Caturthī runs from 11:36 on Thu 2 Jan to 10:19 on Fri 3 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-01-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-01-10", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35133, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-01-09T17:45:44+08:00", "utc": "1964-01-09T09:45:44Z", "ms": -188662455903.5793 }, "end": { "local": "1964-01-10T20:26:34+08:00", "utc": "1964-01-10T12:26:34Z", "ms": -188566405929.97632 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-09T17:45:44+08:00", "utc": "1964-01-09T09:45:44Z", "ms": -188662455903.5793 }, "end": { "local": "1964-01-10T20:26:34+08:00", "utc": "1964-01-10T12:26:34Z", "ms": -188566405929.97632 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-01-09", "window": { "start": { "local": "1964-01-09T08:00:11+08:00", "utc": "1964-01-09T00:00:11Z", "ms": -188697589273.00436 }, "end": { "local": "1964-01-09T08:00:11+08:00", "utc": "1964-01-09T00:00:11Z", "ms": -188697589273.00436 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-01-10", "window": { "start": { "local": "1964-01-10T08:00:08+08:00", "utc": "1964-01-10T00:00:08Z", "ms": -188611192477.65247 }, "end": { "local": "1964-01-10T08:00:08+08:00", "utc": "1964-01-10T00:00:08Z", "ms": -188611192477.65247 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:46 on Thu 9 Jan to 20:27 on Fri 10 Jan.", "fact": "1964-01-09T09:45:44Z → 1964-01-10T12:26:34Z" }, { "step": "kaala", "text": "Sunrise is at 08:00 on the 9th and 08:00 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35133 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Qingyang, 1964: Friday 10 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-10", "confidence": "determinate" } ], "quote": "In Qingyang, Ṣaṭtilā Ekādaśī 1964 falls on Friday 10 January. Ekādaśī runs from 17:46 on Thu 9 Jan to 20:27 on Fri 10 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-01-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-01-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11657, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-01-11T23:01:10+08:00", "utc": "1964-01-11T15:01:10Z", "ms": -188470730143.6215 }, "end": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-11T23:01:10+08:00", "utc": "1964-01-11T15:01:10Z", "ms": -188470730143.6215 }, "end": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-01-11", "window": { "start": { "local": "1964-01-11T17:54:06+08:00", "utc": "1964-01-11T09:54:06Z", "ms": -188489153807.39548 }, "end": { "local": "1964-01-11T19:46:53+08:00", "utc": "1964-01-11T11:46:53Z", "ms": -188482387263.5409 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "1964-01-12", "window": { "start": { "local": "1964-01-12T17:55:02+08:00", "utc": "1964-01-12T09:55:02Z", "ms": -188402697972.90274 }, "end": { "local": "1964-01-12T19:47:40+08:00", "utc": "1964-01-12T11:47:40Z", "ms": -188395940079.95987 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:01 on Sat 11 Jan to 01:20 on Mon 13 Jan.", "fact": "1964-01-11T15:01:10Z → 1964-01-12T17:19:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:47 on the 11th, 17:55–19:48 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 113 minutes on the 11th and 113 of 113 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11657 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Sunday 12 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-12", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Sunday 12 January. Trayodaśī runs from 23:01 on Sat 11 Jan to 01:20 on Mon 13 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10319, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 }, "end": { "local": "1964-01-14T03:15:07+08:00", "utc": "1964-01-13T19:15:07Z", "ms": -188282693073.37372 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 }, "end": { "local": "1964-01-14T03:15:07+08:00", "utc": "1964-01-13T19:15:07Z", "ms": -188282693073.37372 } }, "kaala": "arunodaya", "days": [ { "local_date": "1964-01-13", "window": { "start": { "local": "1964-01-13T06:07:08+08:00", "utc": "1964-01-12T22:07:08Z", "ms": -188358771668.77402 }, "end": { "local": "1964-01-13T07:59:46+08:00", "utc": "1964-01-12T23:59:46Z", "ms": -188352013775.83115 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1964-01-14", "window": { "start": { "local": "1964-01-14T06:07:06+08:00", "utc": "1964-01-13T22:07:06Z", "ms": -188272373648.5104 }, "end": { "local": "1964-01-14T07:59:35+08:00", "utc": "1964-01-13T23:59:35Z", "ms": -188265624769.29346 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:20 on Mon 13 Jan to 03:15 on Tue 14 Jan.", "fact": "1964-01-12T17:19:40Z → 1964-01-13T19:15:07Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 06:07–08:00 on the 13th, 06:07–08:00 on the 14th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 113 of 113 minutes on the 13th and 0 of 112 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10319 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Qingyang, 1964: Monday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-13", "confidence": "determinate" } ], "quote": "In Qingyang, Yama Tarpaṇa 1964 falls on Monday 13 January. Caturdaśī runs from 01:20 on Mon 13 Jan to 03:15 on Tue 14 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/qingyang/festivals/1964/yama-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-01-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-13", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 105, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 }, "end": { "local": "1964-01-14T03:15:07+08:00", "utc": "1964-01-13T19:15:07Z", "ms": -188282693073.37372 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-13T01:19:40+08:00", "utc": "1964-01-12T17:19:40Z", "ms": -188376020390.1459 }, "end": { "local": "1964-01-14T03:15:07+08:00", "utc": "1964-01-13T19:15:07Z", "ms": -188282693073.37372 } }, "kaala": "nishita", "days": [ { "local_date": "1964-01-12", "window": { "start": { "local": "1964-01-13T00:33:24+08:00", "utc": "1964-01-12T16:33:24Z", "ms": -188378795874.36694 }, "end": { "local": "1964-01-13T01:21:24+08:00", "utc": "1964-01-12T17:21:24Z", "ms": -188375915874.36694 } }, "covered_min": 2, "window_min": 48, "qualifies": true }, { "local_date": "1964-01-13", "window": { "start": { "local": "1964-01-14T00:33:47+08:00", "utc": "1964-01-13T16:33:47Z", "ms": -188292373066.35706 }, "end": { "local": "1964-01-14T01:21:47+08:00", "utc": "1964-01-13T17:21:47Z", "ms": -188289493066.35706 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:20 on Mon 13 Jan to 03:15 on Tue 14 Jan.", "fact": "1964-01-12T17:19:40Z → 1964-01-13T19:15:07Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:33–01:21 on the 12th, 00:34–01:22 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 2 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 105 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Monday 13 January.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-13", "confidence": "boundary" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Monday 13 January. Caturdaśī runs from 01:20 on Mon 13 Jan to 03:15 on Tue 14 Jan and covers all of niśītha that night. It also reaches the previous night for 2 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 45 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-01-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7364, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-02-13T08:58:52+08:00", "utc": "1964-02-13T00:58:52Z", "ms": -185670067889.55087 } }, "span": { "of": "transit", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 } }, "kaala": "sunset-day", "days": [ { "local_date": "1964-01-14", "window": { "start": { "local": "1964-01-13T17:55:59+08:00", "utc": "1964-01-13T09:55:59Z", "ms": -188316241363.42062 }, "end": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1964-01-15", "window": { "start": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 }, "end": { "local": "1964-01-15T17:57:54+08:00", "utc": "1964-01-15T09:57:54Z", "ms": -188143326029.8752 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1964-01-15", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:00 on Tue 14 Jan.", "fact": "1964-01-14T11:59:40Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:57, and the day of the 15th ends at 17:58.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 14th and the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 7364 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 15 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Qingyang, 1964: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1964-01-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1964-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Qingyang, Bhogi 1964 falls on Tuesday 14 January. It is kept the day before Pongal, which falls on Wednesday 15 January. The Sun enters Makara at 20:00 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from midnight, or counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/qingyang/festivals/1964/bhogi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14420, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-02-13T08:58:52+08:00", "utc": "1964-02-13T00:58:52Z", "ms": -185670067889.55087 } }, "span": { "of": "transit", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 } }, "kaala": "civil-day", "days": [ { "local_date": "1964-01-14", "window": { "start": { "local": "1964-01-14T00:00:00+08:00", "utc": "1964-01-13T16:00:00Z", "ms": -188294400000 }, "end": { "local": "1964-01-15T00:00:00+08:00", "utc": "1964-01-14T16:00:00Z", "ms": -188208000000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1964-01-15", "window": { "start": { "local": "1964-01-15T00:00:00+08:00", "utc": "1964-01-14T16:00:00Z", "ms": -188208000000 }, "end": { "local": "1964-01-16T00:00:00+08:00", "utc": "1964-01-15T16:00:00Z", "ms": -188121600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:00 on Tue 14 Jan.", "fact": "1964-01-14T11:59:40Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Qingyang.", "fact": "civil-day: midnight-to-midnight · Asia/Shanghai" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 14420 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Qingyang, 1964: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1964-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1964-01-15", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Qingyang, Makara Saṅkrānti 1964 falls on Tuesday 14 January. The Sun enters Makara at 20:00 on Tue 14 Jan, and the rule counts the day from midnight. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 15 January.", "cite": "https://ahargana.org/qingyang/festivals/1964/makara-sankranti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7364, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-02-13T08:58:52+08:00", "utc": "1964-02-13T00:58:52Z", "ms": -185670067889.55087 } }, "span": { "of": "transit", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 } }, "kaala": "sunset-day", "days": [ { "local_date": "1964-01-14", "window": { "start": { "local": "1964-01-13T17:55:59+08:00", "utc": "1964-01-13T09:55:59Z", "ms": -188316241363.42062 }, "end": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1964-01-15", "window": { "start": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 }, "end": { "local": "1964-01-15T17:57:54+08:00", "utc": "1964-01-15T09:57:54Z", "ms": -188143326029.8752 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:00 on Tue 14 Jan.", "fact": "1964-01-14T11:59:40Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:57, and the day of the 15th ends at 17:58.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 14th and the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 7364 s" }, { "step": "ruling", "text": "Pongal, Qingyang, 1964: Wednesday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1964-01-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1964-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Qingyang, Pongal 1964 falls on Wednesday 15 January. The Sun enters Makara at 20:00 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from midnight, or counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/qingyang/festivals/1964/pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7364, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-02-13T08:58:52+08:00", "utc": "1964-02-13T00:58:52Z", "ms": -185670067889.55087 } }, "span": { "of": "transit", "start": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 }, "end": { "local": "1964-01-14T19:59:40+08:00", "utc": "1964-01-14T11:59:40Z", "ms": -188222420055.93652 } }, "kaala": "sunset-day", "days": [ { "local_date": "1964-01-14", "window": { "start": { "local": "1964-01-13T17:55:59+08:00", "utc": "1964-01-13T09:55:59Z", "ms": -188316241363.42062 }, "end": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1964-01-15", "window": { "start": { "local": "1964-01-14T17:56:56+08:00", "utc": "1964-01-14T09:56:56Z", "ms": -188229784031.56174 }, "end": { "local": "1964-01-15T17:57:54+08:00", "utc": "1964-01-15T09:57:54Z", "ms": -188143326029.8752 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1964-01-15", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:00 on Tue 14 Jan.", "fact": "1964-01-14T11:59:40Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:57, and the day of the 15th ends at 17:58.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 14th and the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 7364 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 15 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Qingyang, 1964: Thursday 16 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-16", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1964-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1964-01-15", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Qingyang, Mattu Pongal 1964 falls on Thursday 16 January. It is kept the day after Pongal, which falls on Wednesday 15 January. The Sun enters Makara at 20:00 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from midnight, or counted from sunrise, as in Orissa, it is 15 January.", "cite": "https://ahargana.org/qingyang/festivals/1964/mattu-pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22725, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-01-18T06:16:57+08:00", "utc": "1964-01-17T22:16:57Z", "ms": -187926183430.26672 }, "end": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-18T06:16:57+08:00", "utc": "1964-01-17T22:16:57Z", "ms": -187926183430.26672 }, "end": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-01-18", "window": { "start": { "local": "1964-01-18T12:35:42+08:00", "utc": "1964-01-18T04:35:42Z", "ms": -187903458326.82922 }, "end": { "local": "1964-01-18T13:23:42+08:00", "utc": "1964-01-18T05:23:42Z", "ms": -187900578326.82922 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-01-19", "window": { "start": { "local": "1964-01-19T12:36:01+08:00", "utc": "1964-01-19T04:36:01Z", "ms": -187817038570.98865 }, "end": { "local": "1964-01-19T13:24:01+08:00", "utc": "1964-01-19T05:24:01Z", "ms": -187814158570.98865 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:17 on Sat 18 Jan to 05:54 on Sun 19 Jan.", "fact": "1964-01-17T22:16:57Z → 1964-01-18T21:53:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:36–13:24 on the 18th, 12:36–13:24 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22725 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Qingyang, 1964: Saturday 18 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-18", "confidence": "determinate" } ], "quote": "In Qingyang, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1964 falls on Saturday 18 January. Caturthī runs from 06:17 on Sat 18 Jan to 05:54 on Sun 19 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/ganesha-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36072, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-01-18T06:16:57+08:00", "utc": "1964-01-17T22:16:57Z", "ms": -187926183430.26672 }, "end": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-18T06:16:57+08:00", "utc": "1964-01-17T22:16:57Z", "ms": -187926183430.26672 }, "end": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-01-17", "window": { "start": { "local": "1964-01-17T17:59:52+08:00", "utc": "1964-01-17T09:59:52Z", "ms": -187970408225.37674 }, "end": { "local": "1964-01-17T19:51:41+08:00", "utc": "1964-01-17T11:51:41Z", "ms": -187963698879.1503 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "1964-01-18", "window": { "start": { "local": "1964-01-18T18:00:51+08:00", "utc": "1964-01-18T10:00:51Z", "ms": -187883948524.97998 }, "end": { "local": "1964-01-18T19:52:30+08:00", "utc": "1964-01-18T11:52:30Z", "ms": -187877249892.70984 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:17 on Sat 18 Jan to 05:54 on Sun 19 Jan.", "fact": "1964-01-17T22:16:57Z → 1964-01-18T21:53:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:52 on the 17th, 18:01–19:53 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 112 minutes on the 17th and 112 of 112 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36072 s" }, { "step": "ruling", "text": "Tila Caturthī, Qingyang, 1964: Saturday 18 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-18", "confidence": "determinate" } ], "quote": "In Qingyang, Tila Caturthī 1964 falls on Saturday 18 January. Caturthī runs from 06:17 on Sat 18 Jan to 05:54 on Sun 19 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/tila-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24139, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "end": { "local": "1964-01-20T05:05:46+08:00", "utc": "1964-01-19T21:05:46Z", "ms": -187757653866.259 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "end": { "local": "1964-01-20T05:05:46+08:00", "utc": "1964-01-19T21:05:46Z", "ms": -187757653866.259 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-01-19", "window": { "start": { "local": "1964-01-19T12:36:01+08:00", "utc": "1964-01-19T04:36:01Z", "ms": -187817038570.98865 }, "end": { "local": "1964-01-19T13:24:01+08:00", "utc": "1964-01-19T05:24:01Z", "ms": -187814158570.98865 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-01-20", "window": { "start": { "local": "1964-01-20T12:36:20+08:00", "utc": "1964-01-20T04:36:20Z", "ms": -187730619560.00018 }, "end": { "local": "1964-01-20T13:24:20+08:00", "utc": "1964-01-20T05:24:20Z", "ms": -187727739560.00018 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:54 on Sun 19 Jan to 05:06 on Mon 20 Jan.", "fact": "1964-01-18T21:53:42Z → 1964-01-19T21:05:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:36–13:24 on the 19th, 12:36–13:24 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24139 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Qingyang, 1964: Sunday 19 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-19", "confidence": "determinate" } ], "quote": "In Qingyang, Śrī Pañcamī 1964 falls on Sunday 19 January. Pañcamī runs from 05:54 on Sun 19 Jan to 05:06 on Mon 20 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/shri-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24139, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "end": { "local": "1964-01-20T05:05:46+08:00", "utc": "1964-01-19T21:05:46Z", "ms": -187757653866.259 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-19T05:53:42+08:00", "utc": "1964-01-18T21:53:42Z", "ms": -187841177685.08704 }, "end": { "local": "1964-01-20T05:05:46+08:00", "utc": "1964-01-19T21:05:46Z", "ms": -187757653866.259 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-01-19", "window": { "start": { "local": "1964-01-19T12:36:01+08:00", "utc": "1964-01-19T04:36:01Z", "ms": -187817038570.98865 }, "end": { "local": "1964-01-19T13:24:01+08:00", "utc": "1964-01-19T05:24:01Z", "ms": -187814158570.98865 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-01-20", "window": { "start": { "local": "1964-01-20T12:36:20+08:00", "utc": "1964-01-20T04:36:20Z", "ms": -187730619560.00018 }, "end": { "local": "1964-01-20T13:24:20+08:00", "utc": "1964-01-20T05:24:20Z", "ms": -187727739560.00018 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:54 on Sun 19 Jan to 05:06 on Mon 20 Jan.", "fact": "1964-01-18T21:53:42Z → 1964-01-19T21:05:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:36–13:24 on the 19th, 12:36–13:24 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24139 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Qingyang, 1964: Sunday 19 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-19", "confidence": "determinate" } ], "quote": "In Qingyang, Vasanta Pañcamī 1964 falls on Sunday 19 January. Pañcamī runs from 05:54 on Sun 19 Jan to 05:06 on Mon 20 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vasanta-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7884, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-01-21T03:54:44+08:00", "utc": "1964-01-20T19:54:44Z", "ms": -187675515783.6522 }, "end": { "local": "1964-01-22T02:22:16+08:00", "utc": "1964-01-21T18:22:16Z", "ms": -187594663695.63562 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-21T03:54:44+08:00", "utc": "1964-01-20T19:54:44Z", "ms": -187675515783.6522 }, "end": { "local": "1964-01-22T02:22:16+08:00", "utc": "1964-01-21T18:22:16Z", "ms": -187594663695.63562 } }, "kaala": "arunodaya", "days": [ { "local_date": "1964-01-21", "window": { "start": { "local": "1964-01-21T06:06:08+08:00", "utc": "1964-01-20T22:06:08Z", "ms": -187667632063.2179 }, "end": { "local": "1964-01-21T07:57:24+08:00", "utc": "1964-01-20T23:57:24Z", "ms": -187660955799.7559 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "1964-01-22", "window": { "start": { "local": "1964-01-22T06:05:53+08:00", "utc": "1964-01-21T22:05:53Z", "ms": -187581246759.1459 }, "end": { "local": "1964-01-22T07:56:58+08:00", "utc": "1964-01-21T23:56:58Z", "ms": -187574582134.14362 } }, "covered_min": 0, "window_min": 111, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:55 on Tue 21 Jan to 02:22 on Wed 22 Jan.", "fact": "1964-01-20T19:54:44Z → 1964-01-21T18:22:16Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 06:06–07:57 on the 21st, 06:06–07:57 on the 22nd.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 111 of 111 minutes on the 21st and 0 of 111 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7884 s" }, { "step": "ruling", "text": "Ratha Saptamī, Qingyang, 1964: Tuesday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-21", "confidence": "determinate" } ], "quote": "In Qingyang, Ratha Saptamī 1964 falls on Tuesday 21 January. Saptamī runs from 03:55 on Tue 21 Jan to 02:22 on Wed 22 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/qingyang/festivals/1964/ratha-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-01-25", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34144, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-01-24T19:57:53+08:00", "utc": "1964-01-24T11:57:53Z", "ms": -187358527321.517 }, "end": { "local": "1964-01-25T17:24:32+08:00", "utc": "1964-01-25T09:24:32Z", "ms": -187281328446.8087 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-24T19:57:53+08:00", "utc": "1964-01-24T11:57:53Z", "ms": -187358527321.517 }, "end": { "local": "1964-01-25T17:24:32+08:00", "utc": "1964-01-25T09:24:32Z", "ms": -187281328446.8087 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-01-24", "window": { "start": { "local": "1964-01-24T07:56:00+08:00", "utc": "1964-01-23T23:56:00Z", "ms": -187401840366.20828 }, "end": { "local": "1964-01-24T07:56:00+08:00", "utc": "1964-01-23T23:56:00Z", "ms": -187401840366.20828 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-01-25", "window": { "start": { "local": "1964-01-25T07:55:28+08:00", "utc": "1964-01-24T23:55:28Z", "ms": -187315472220.882 }, "end": { "local": "1964-01-25T07:55:28+08:00", "utc": "1964-01-24T23:55:28Z", "ms": -187315472220.882 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:58 on Fri 24 Jan to 17:25 on Sat 25 Jan.", "fact": "1964-01-24T11:57:53Z → 1964-01-25T09:24:32Z" }, { "step": "kaala", "text": "Sunrise is at 07:56 on the 24th and 07:55 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34144 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Qingyang, 1964: Saturday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-25", "confidence": "determinate" } ], "quote": "In Qingyang, Jayā Ekādaśī 1964 falls on Saturday 25 January. Ekādaśī runs from 19:58 on Fri 24 Jan to 17:25 on Sat 25 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-01-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4802, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-01-25T17:24:32+08:00", "utc": "1964-01-25T09:24:32Z", "ms": -187281328446.8087 }, "end": { "local": "1964-01-26T14:46:00+08:00", "utc": "1964-01-26T06:46:00Z", "ms": -187204440031.01355 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-25T17:24:32+08:00", "utc": "1964-01-25T09:24:32Z", "ms": -187281328446.8087 }, "end": { "local": "1964-01-26T14:46:00+08:00", "utc": "1964-01-26T06:46:00Z", "ms": -187204440031.01355 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-01-25", "window": { "start": { "local": "1964-01-25T12:37:44+08:00", "utc": "1964-01-25T04:37:44Z", "ms": -187298536191.56985 }, "end": { "local": "1964-01-25T13:25:44+08:00", "utc": "1964-01-25T05:25:44Z", "ms": -187295656191.56985 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-01-26", "window": { "start": { "local": "1964-01-26T12:37:58+08:00", "utc": "1964-01-26T04:37:58Z", "ms": -187212121926.19696 }, "end": { "local": "1964-01-26T13:25:58+08:00", "utc": "1964-01-26T05:25:58Z", "ms": -187209241926.19696 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:25 on Sat 25 Jan to 14:46 on Sun 26 Jan.", "fact": "1964-01-25T09:24:32Z → 1964-01-26T06:46:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:38–13:26 on the 25th, 12:38–13:26 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4802 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Qingyang, 1964: Sunday 26 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-26", "confidence": "determinate" } ], "quote": "In Qingyang, Bhīṣma Dvādaśī 1964 falls on Sunday 26 January. Dvādaśī runs from 17:25 on Sat 25 Jan to 14:46 on Sun 26 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/bhishma-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-01-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12182, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-01-26T14:46:00+08:00", "utc": "1964-01-26T06:46:00Z", "ms": -187204440031.01355 }, "end": { "local": "1964-01-27T12:08:13+08:00", "utc": "1964-01-27T04:08:13Z", "ms": -187127507040.14505 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-26T14:46:00+08:00", "utc": "1964-01-26T06:46:00Z", "ms": -187204440031.01355 }, "end": { "local": "1964-01-27T12:08:13+08:00", "utc": "1964-01-27T04:08:13Z", "ms": -187127507040.14505 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-01-26", "window": { "start": { "local": "1964-01-26T18:09:02+08:00", "utc": "1964-01-26T10:09:02Z", "ms": -187192257983.6088 }, "end": { "local": "1964-01-26T19:59:04+08:00", "utc": "1964-01-26T11:59:04Z", "ms": -187185655756.8819 } }, "covered_min": 110, "window_min": 110, "qualifies": true }, { "local_date": "1964-01-27", "window": { "start": { "local": "1964-01-27T18:10:04+08:00", "utc": "1964-01-27T10:10:04Z", "ms": -187105795669.83423 }, "end": { "local": "1964-01-27T19:59:53+08:00", "utc": "1964-01-27T11:59:53Z", "ms": -187099206705.3142 } }, "covered_min": 0, "window_min": 110, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:46 on Sun 26 Jan to 12:08 on Mon 27 Jan.", "fact": "1964-01-26T06:46:00Z → 1964-01-27T04:08:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:09–19:59 on the 26th, 18:10–20:00 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 110 of 110 minutes on the 26th and 0 of 110 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12182 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Sunday 26 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-26", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Sunday 26 January. Trayodaśī runs from 14:46 on Sun 26 Jan to 12:08 on Mon 27 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-01-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10826, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-01-28T09:37:58+08:00", "utc": "1964-01-28T01:37:58Z", "ms": -187050121733.09662 }, "end": { "local": "1964-01-29T07:22:44+08:00", "utc": "1964-01-28T23:22:44Z", "ms": -186971835854.16745 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1964-01-28T09:37:58+08:00", "utc": "1964-01-28T01:37:58Z", "ms": -187050121733.09662 }, "end": { "local": "1964-01-29T07:22:44+08:00", "utc": "1964-01-28T23:22:44Z", "ms": -186971835854.16745 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-01-28", "window": { "start": { "local": "1964-01-28T12:38:24+08:00", "utc": "1964-01-28T04:38:24Z", "ms": -187039295843.88452 }, "end": { "local": "1964-01-28T13:26:24+08:00", "utc": "1964-01-28T05:26:24Z", "ms": -187036415843.88452 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-01-29", "window": { "start": { "local": "1964-01-29T12:38:36+08:00", "utc": "1964-01-29T04:38:36Z", "ms": -186952884028.30933 }, "end": { "local": "1964-01-29T13:26:36+08:00", "utc": "1964-01-29T05:26:36Z", "ms": -186950004028.30933 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:38 on Tue 28 Jan to 07:23 on Wed 29 Jan.", "fact": "1964-01-28T01:37:58Z → 1964-01-28T23:22:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:38–13:26 on the 28th, 12:39–13:27 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10826 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Qingyang, 1964: Tuesday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maghi-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Maghi purnima (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-01-28", "confidence": "determinate" } ], "quote": "In Qingyang, Māghī Pūrṇimā 1964 falls on Tuesday 28 January. Pūrṇimā runs from 09:38 on Tue 28 Jan to 07:23 on Wed 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/maghi-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-02-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19989, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-02-01T03:23:49+08:00", "utc": "1964-01-31T19:23:49Z", "ms": -186726971314.2983 }, "end": { "local": "1964-02-02T03:21:35+08:00", "utc": "1964-02-01T19:21:35Z", "ms": -186640704992.80484 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-01T03:23:49+08:00", "utc": "1964-01-31T19:23:49Z", "ms": -186726971314.2983 }, "end": { "local": "1964-02-02T03:21:35+08:00", "utc": "1964-02-01T19:21:35Z", "ms": -186640704992.80484 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-01-31", "window": { "start": { "local": "1964-01-31T20:46:31+08:00", "utc": "1964-01-31T12:46:31Z", "ms": -186750808524.73544 }, "end": { "local": "1964-01-31T20:46:31+08:00", "utc": "1964-01-31T12:46:31Z", "ms": -186750808524.73544 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-02-01", "window": { "start": { "local": "1964-02-01T21:48:26+08:00", "utc": "1964-02-01T13:48:26Z", "ms": -186660693767.2343 }, "end": { "local": "1964-02-01T21:48:26+08:00", "utc": "1964-02-01T13:48:26Z", "ms": -186660693767.2343 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:24 on Sat 1 Feb to 03:22 on Sun 2 Feb.", "fact": "1964-01-31T19:23:49Z → 1964-02-01T19:21:35Z" }, { "step": "kaala", "text": "Moonrise is at 20:47 on the 31st and 21:48 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19989 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Saturday 1 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-01", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Saturday 1 February. Caturthī runs from 03:24 on Sat 1 Feb to 03:22 on Sun 2 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-02-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-02-09", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26829, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-02-08T15:12:15+08:00", "utc": "1964-02-08T07:12:15Z", "ms": -186079664540.6384 }, "end": { "local": "1964-02-09T17:29:16+08:00", "utc": "1964-02-09T09:29:16Z", "ms": -185985044469.04608 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-08T15:12:15+08:00", "utc": "1964-02-08T07:12:15Z", "ms": -186079664540.6384 }, "end": { "local": "1964-02-09T17:29:16+08:00", "utc": "1964-02-09T09:29:16Z", "ms": -185985044469.04608 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-02-08", "window": { "start": { "local": "1964-02-08T07:45:07+08:00", "utc": "1964-02-07T23:45:07Z", "ms": -186106493480.94717 }, "end": { "local": "1964-02-08T07:45:07+08:00", "utc": "1964-02-07T23:45:07Z", "ms": -186106493480.94717 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-02-09", "window": { "start": { "local": "1964-02-09T07:44:11+08:00", "utc": "1964-02-08T23:44:11Z", "ms": -186020149208.15067 }, "end": { "local": "1964-02-09T07:44:11+08:00", "utc": "1964-02-08T23:44:11Z", "ms": -186020149208.15067 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:12 on Sat 8 Feb to 17:29 on Sun 9 Feb.", "fact": "1964-02-08T07:12:15Z → 1964-02-09T09:29:16Z" }, { "step": "kaala", "text": "Sunrise is at 07:45 on the 8th and 07:44 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26829 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Qingyang, 1964: Sunday 9 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-09", "confidence": "determinate" } ], "quote": "In Qingyang, Vijayā Ekādaśī 1964 falls on Sunday 9 February. Ekādaśī runs from 15:12 on Sat 8 Feb to 17:29 on Sun 9 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-02-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12941, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-02-11T20:29:32+08:00", "utc": "1964-02-11T12:29:32Z", "ms": -185801427562.96793 }, "end": { "local": "1964-02-12T21:03:46+08:00", "utc": "1964-02-12T13:03:46Z", "ms": -185712974295.54822 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-11T20:29:32+08:00", "utc": "1964-02-11T12:29:32Z", "ms": -185801427562.96793 }, "end": { "local": "1964-02-12T21:03:46+08:00", "utc": "1964-02-12T13:03:46Z", "ms": -185712974295.54822 } }, "kaala": "nishita", "days": [ { "local_date": "1964-02-11", "window": { "start": { "local": "1964-02-12T00:39:26+08:00", "utc": "1964-02-11T16:39:26Z", "ms": -185786433627.59735 }, "end": { "local": "1964-02-12T01:27:26+08:00", "utc": "1964-02-11T17:27:26Z", "ms": -185783553627.59735 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-02-12", "window": { "start": { "local": "1964-02-13T00:39:26+08:00", "utc": "1964-02-12T16:39:26Z", "ms": -185700033613.35657 }, "end": { "local": "1964-02-13T01:27:26+08:00", "utc": "1964-02-12T17:27:26Z", "ms": -185697153613.35657 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:30 on Tue 11 Feb to 21:04 on Wed 12 Feb.", "fact": "1964-02-11T12:29:32Z → 1964-02-12T13:03:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:39–01:27 on the 11th, 00:39–01:27 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 12941 s" }, { "step": "ruling", "text": "Mahāśivarātri, Qingyang, 1964: Tuesday 11 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-11", "confidence": "determinate" } ], "quote": "In Qingyang, Mahāśivarātri 1964 falls on Tuesday 11 February. Caturdaśī runs from 20:30 on Tue 11 Feb to 21:04 on Wed 12 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/maha-shivaratri", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-02-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1070, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-02-10T19:17:15+08:00", "utc": "1964-02-10T11:17:15Z", "ms": -185892165148.47925 }, "end": { "local": "1964-02-11T20:29:32+08:00", "utc": "1964-02-11T12:29:32Z", "ms": -185801427562.96793 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-10T19:17:15+08:00", "utc": "1964-02-10T11:17:15Z", "ms": -185892165148.47925 }, "end": { "local": "1964-02-11T20:29:32+08:00", "utc": "1964-02-11T12:29:32Z", "ms": -185801427562.96793 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-02-10", "window": { "start": { "local": "1964-02-10T18:24:36+08:00", "utc": "1964-02-10T10:24:36Z", "ms": -185895324094.58524 }, "end": { "local": "1964-02-10T20:10:57+08:00", "utc": "1964-02-10T12:10:57Z", "ms": -185888942842.52753 } }, "covered_min": 54, "window_min": 106, "qualifies": true }, { "local_date": "1964-02-11", "window": { "start": { "local": "1964-02-11T18:25:37+08:00", "utc": "1964-02-11T10:25:37Z", "ms": -185808862840.22995 }, "end": { "local": "1964-02-11T20:11:42+08:00", "utc": "1964-02-11T12:11:42Z", "ms": -185802497716.86127 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:17 on Mon 10 Feb to 20:30 on Tue 11 Feb.", "fact": "1964-02-10T11:17:15Z → 1964-02-11T12:29:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:25–20:11 on the 10th, 18:26–20:12 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 54 of 106 minutes on the 10th and 106 of 106 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1070 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Tuesday 11 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-11", "confidence": "boundary" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Tuesday 11 February. Trayodaśī runs from 19:17 on Mon 10 Feb to 20:30 on Tue 11 Feb and covers all of pradoṣa that evening. It also reaches the previous evening for 54 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-02-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-02-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10114, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-02-16T17:57:16+08:00", "utc": "1964-02-16T09:57:16Z", "ms": -185378563981.42896 }, "end": { "local": "1964-02-17T16:16:23+08:00", "utc": "1964-02-17T08:16:23Z", "ms": -185298216763.20706 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-16T17:57:16+08:00", "utc": "1964-02-16T09:57:16Z", "ms": -185378563981.42896 }, "end": { "local": "1964-02-17T16:16:23+08:00", "utc": "1964-02-17T08:16:23Z", "ms": -185298216763.20706 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-02-16", "window": { "start": { "local": "1964-02-16T12:39:52+08:00", "utc": "1964-02-16T04:39:52Z", "ms": -185397608130.8476 }, "end": { "local": "1964-02-16T13:27:52+08:00", "utc": "1964-02-16T05:27:52Z", "ms": -185394728130.8476 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-02-17", "window": { "start": { "local": "1964-02-17T12:39:49+08:00", "utc": "1964-02-17T04:39:49Z", "ms": -185311211251.49994 }, "end": { "local": "1964-02-17T13:27:49+08:00", "utc": "1964-02-17T05:27:49Z", "ms": -185308331251.49994 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:57 on Sun 16 Feb to 16:16 on Mon 17 Feb.", "fact": "1964-02-16T09:57:16Z → 1964-02-17T08:16:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 16th, 12:40–13:28 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10114 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Monday 17 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-17", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Monday 17 February. Caturthī runs from 17:57 on Sun 16 Feb to 16:16 on Mon 17 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-02-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-02-23", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11244, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-02-23T04:21:37+08:00", "utc": "1964-02-22T20:21:37Z", "ms": -184822702536.9343 }, "end": { "local": "1964-02-24T02:26:30+08:00", "utc": "1964-02-23T18:26:30Z", "ms": -184743209731.93124 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-23T04:21:37+08:00", "utc": "1964-02-22T20:21:37Z", "ms": -184822702536.9343 }, "end": { "local": "1964-02-24T02:26:30+08:00", "utc": "1964-02-23T18:26:30Z", "ms": -184743209731.93124 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-02-23", "window": { "start": { "local": "1964-02-23T07:29:01+08:00", "utc": "1964-02-22T23:29:01Z", "ms": -184811458737.06662 }, "end": { "local": "1964-02-23T07:29:01+08:00", "utc": "1964-02-22T23:29:01Z", "ms": -184811458737.06662 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-02-24", "window": { "start": { "local": "1964-02-24T07:27:48+08:00", "utc": "1964-02-23T23:27:48Z", "ms": -184725131746.3966 }, "end": { "local": "1964-02-24T07:27:48+08:00", "utc": "1964-02-23T23:27:48Z", "ms": -184725131746.3966 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:22 on Sun 23 Feb to 02:27 on Mon 24 Feb.", "fact": "1964-02-22T20:21:37Z → 1964-02-23T18:26:30Z" }, { "step": "kaala", "text": "Sunrise is at 07:29 on the 23rd and 07:28 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11244 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Qingyang, 1964: Sunday 23 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-23", "confidence": "determinate" } ], "quote": "In Qingyang, Āmalakī Ekādaśī 1964 falls on Sunday 23 February. Ekādaśī runs from 04:22 on Sun 23 Feb to 02:27 on Mon 24 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-02-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-02-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9581, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-02-25T00:38:26+08:00", "utc": "1964-02-24T16:38:26Z", "ms": -184663293929.64462 }, "end": { "local": "1964-02-25T23:01:11+08:00", "utc": "1964-02-25T15:01:11Z", "ms": -184582729015.7134 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-25T00:38:26+08:00", "utc": "1964-02-24T16:38:26Z", "ms": -184663293929.64462 }, "end": { "local": "1964-02-25T23:01:11+08:00", "utc": "1964-02-25T15:01:11Z", "ms": -184582729015.7134 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-02-24", "window": { "start": { "local": "1964-02-24T18:38:26+08:00", "utc": "1964-02-24T10:38:26Z", "ms": -184684894025.3486 }, "end": { "local": "1964-02-24T20:20:51+08:00", "utc": "1964-02-24T12:20:51Z", "ms": -184678748909.08472 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "1964-02-25", "window": { "start": { "local": "1964-02-25T18:39:23+08:00", "utc": "1964-02-25T10:39:23Z", "ms": -184598437308.23682 }, "end": { "local": "1964-02-25T20:21:30+08:00", "utc": "1964-02-25T12:21:30Z", "ms": -184592309723.50516 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:38 on Tue 25 Feb to 23:01 on Tue 25 Feb.", "fact": "1964-02-24T16:38:26Z → 1964-02-25T15:01:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:38–20:21 on the 24th, 18:39–20:22 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 102 minutes on the 24th and 102 of 102 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9581 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Tuesday 25 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-25", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Tuesday 25 February. Trayodaśī runs from 00:38 on Tue 25 Feb to 23:01 on Tue 25 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-02-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7077, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-02-26T21:39:34+08:00", "utc": "1964-02-26T13:39:34Z", "ms": -184501226322.0001 }, "end": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-26T21:39:34+08:00", "utc": "1964-02-26T13:39:34Z", "ms": -184501226322.0001 }, "end": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 } }, "kaala": "sayahna", "days": [ { "local_date": "1964-02-26", "window": { "start": { "local": "1964-02-26T16:25:19+08:00", "utc": "1964-02-26T08:25:19Z", "ms": -184520080837.29913 }, "end": { "local": "1964-02-26T18:40:19+08:00", "utc": "1964-02-26T10:40:19Z", "ms": -184511980940.93658 } }, "covered_min": 0, "window_min": 135, "qualifies": false }, { "local_date": "1964-02-27", "window": { "start": { "local": "1964-02-27T16:25:49+08:00", "utc": "1964-02-27T08:25:49Z", "ms": -184433651136.9971 }, "end": { "local": "1964-02-27T18:41:15+08:00", "utc": "1964-02-27T10:41:15Z", "ms": -184425524916.388 } }, "covered_min": 135, "window_min": 135, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:40 on Wed 26 Feb to 20:39 on Thu 27 Feb.", "fact": "1964-02-26T13:39:34Z → 1964-02-27T12:39:12Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:25–18:40 on the 26th, 16:26–18:41 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 135 minutes on the 26th and 135 of 135 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7077 s" }, { "step": "ruling", "text": "Holikā Dahana, Qingyang, 1964: Thursday 27 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holika-dahana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "not_evaluated": "The hour the row gives for the rite (\"it should be observed on second half of purnima at night\") is not tested: sāyāhna alone settles the day.", "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-27", "confidence": "determinate" } ], "quote": "In Qingyang, Holikā Dahana 1964 falls on Thursday 27 February. Pūrṇimā runs from 21:40 on Wed 26 Feb to 20:39 on Thu 27 Feb and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/holika-dahana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7077, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-02-26T21:39:34+08:00", "utc": "1964-02-26T13:39:34Z", "ms": -184501226322.0001 }, "end": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1964-02-26T21:39:34+08:00", "utc": "1964-02-26T13:39:34Z", "ms": -184501226322.0001 }, "end": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 } }, "kaala": "sayahna", "days": [ { "local_date": "1964-02-26", "window": { "start": { "local": "1964-02-26T16:25:19+08:00", "utc": "1964-02-26T08:25:19Z", "ms": -184520080837.29913 }, "end": { "local": "1964-02-26T18:40:19+08:00", "utc": "1964-02-26T10:40:19Z", "ms": -184511980940.93658 } }, "covered_min": 0, "window_min": 135, "qualifies": false }, { "local_date": "1964-02-27", "window": { "start": { "local": "1964-02-27T16:25:49+08:00", "utc": "1964-02-27T08:25:49Z", "ms": -184433651136.9971 }, "end": { "local": "1964-02-27T18:41:15+08:00", "utc": "1964-02-27T10:41:15Z", "ms": -184425524916.388 } }, "covered_min": 135, "window_min": 135, "qualifies": true } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1964-02-27", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:40 on Wed 26 Feb to 20:39 on Thu 27 Feb.", "fact": "1964-02-26T13:39:34Z → 1964-02-27T12:39:12Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:25–18:40 on the 26th, 16:26–18:41 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 135 minutes on the 26th and 135 of 135 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7077 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 27 February is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Qingyang, 1964: Friday 28 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holi", "follows": { "festival": "holika-dahana", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-28", "confidence": "determinate" } ], "quote": "In Qingyang, Holī 1964 falls on Friday 28 February. It is kept the day after Holikā Dahana, which falls on Thursday 27 February. Pūrṇimā runs from 21:40 on Wed 26 Feb to 20:39 on Thu 27 Feb and covers all of sāyāhna on the 27th.", "cite": "https://ahargana.org/qingyang/festivals/1964/holi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-02-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38616, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 }, "end": { "local": "1964-02-28T20:06:03+08:00", "utc": "1964-02-28T12:06:03Z", "ms": -184334037299.48886 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-02-27T20:39:12+08:00", "utc": "1964-02-27T12:39:12Z", "ms": -184418448168.5022 }, "end": { "local": "1964-02-28T20:06:03+08:00", "utc": "1964-02-28T12:06:03Z", "ms": -184334037299.48886 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-02-28", "window": { "start": { "local": "1964-02-28T07:22:48+08:00", "utc": "1964-02-27T23:22:48Z", "ms": -184379832408.62915 }, "end": { "local": "1964-02-28T07:22:48+08:00", "utc": "1964-02-27T23:22:48Z", "ms": -184379832408.62915 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-02-29", "window": { "start": { "local": "1964-02-29T07:21:30+08:00", "utc": "1964-02-28T23:21:30Z", "ms": -184293509555.9578 }, "end": { "local": "1964-02-29T07:21:30+08:00", "utc": "1964-02-28T23:21:30Z", "ms": -184293509555.9578 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:39 on Thu 27 Feb to 20:06 on Fri 28 Feb.", "fact": "1964-02-27T12:39:12Z → 1964-02-28T12:06:03Z" }, { "step": "kaala", "text": "Sunrise is at 07:23 on the 28th and 07:22 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38616 s" }, { "step": "ruling", "text": "Vasantotsava, Qingyang, 1964: Friday 28 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasantotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "sunrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-02-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-02-28", "confidence": "determinate" } ], "quote": "In Qingyang, Vasantotsava 1964 falls on Friday 28 February. Pratipadā runs from 20:39 on Thu 27 Feb to 20:06 on Fri 28 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/vasantotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-03-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2010, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-03-01T20:41:59+08:00", "utc": "1964-03-01T12:41:59Z", "ms": -184159081325.26733 }, "end": { "local": "1964-03-02T21:56:29+08:00", "utc": "1964-03-02T13:56:29Z", "ms": -184068210733.06125 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-01T20:41:59+08:00", "utc": "1964-03-01T12:41:59Z", "ms": -184159081325.26733 }, "end": { "local": "1964-03-02T21:56:29+08:00", "utc": "1964-03-02T13:56:29Z", "ms": -184068210733.06125 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-03-01", "window": { "start": { "local": "1964-03-01T21:32:05+08:00", "utc": "1964-03-01T13:32:05Z", "ms": -184156074912.67053 }, "end": { "local": "1964-03-01T21:32:05+08:00", "utc": "1964-03-01T13:32:05Z", "ms": -184156074912.67053 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-03-02", "window": { "start": { "local": "1964-03-02T22:29:59+08:00", "utc": "1964-03-02T14:29:59Z", "ms": -184066200944.1765 }, "end": { "local": "1964-03-02T22:29:59+08:00", "utc": "1964-03-02T14:29:59Z", "ms": -184066200944.1765 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:42 on Sun 1 Mar to 21:56 on Mon 2 Mar.", "fact": "1964-03-01T12:41:59Z → 1964-03-02T13:56:29Z" }, { "step": "kaala", "text": "Moonrise is at 21:32 on the 1st and 22:30 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2010 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Sunday 1 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-01", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Sunday 1 March. Caturthī runs from 20:42 on Sun 1 Mar to 21:56 on Mon 2 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-03-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19180, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-03-06T04:40:29+08:00", "utc": "1964-03-05T20:40:29Z", "ms": -183784770584.1429 }, "end": { "local": "1964-03-07T07:17:09+08:00", "utc": "1964-03-06T23:17:09Z", "ms": -183688971231.9946 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-06T04:40:29+08:00", "utc": "1964-03-05T20:40:29Z", "ms": -183784770584.1429 }, "end": { "local": "1964-03-07T07:17:09+08:00", "utc": "1964-03-06T23:17:09Z", "ms": -183688971231.9946 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-03-06", "window": { "start": { "local": "1964-03-06T12:37:03+08:00", "utc": "1964-03-06T04:37:03Z", "ms": -183756177265.651 }, "end": { "local": "1964-03-06T13:25:03+08:00", "utc": "1964-03-06T05:25:03Z", "ms": -183753297265.651 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-03-07", "window": { "start": { "local": "1964-03-07T12:36:49+08:00", "utc": "1964-03-07T04:36:49Z", "ms": -183669791370.10968 }, "end": { "local": "1964-03-07T13:24:49+08:00", "utc": "1964-03-07T05:24:49Z", "ms": -183666911370.10968 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 04:40 on Fri 6 Mar to 07:17 on Sat 7 Mar.", "fact": "1964-03-05T20:40:29Z → 1964-03-06T23:17:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 6th, 12:37–13:25 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19180 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Qingyang, 1964: Friday 6 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-06", "confidence": "determinate" } ], "quote": "In Qingyang, Śītalāṣṭamī 1964 falls on Friday 6 March. Aṣṭamī runs from 04:40 on Fri 6 Mar to 07:17 on Sat 7 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/shitalashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-03-10", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15719, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-03-09T11:31:26+08:00", "utc": "1964-03-09T03:31:26Z", "ms": -183500913589.00943 }, "end": { "local": "1964-03-10T12:43:57+08:00", "utc": "1964-03-10T04:43:57Z", "ms": -183410162886.43362 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-09T11:31:26+08:00", "utc": "1964-03-09T03:31:26Z", "ms": -183500913589.00943 }, "end": { "local": "1964-03-10T12:43:57+08:00", "utc": "1964-03-10T04:43:57Z", "ms": -183410162886.43362 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-03-09", "window": { "start": { "local": "1964-03-09T07:09:27+08:00", "utc": "1964-03-08T23:09:27Z", "ms": -183516632563.0249 }, "end": { "local": "1964-03-09T07:09:27+08:00", "utc": "1964-03-08T23:09:27Z", "ms": -183516632563.0249 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-03-10", "window": { "start": { "local": "1964-03-10T07:08:04+08:00", "utc": "1964-03-09T23:08:04Z", "ms": -183430315505.73755 }, "end": { "local": "1964-03-10T07:08:04+08:00", "utc": "1964-03-09T23:08:04Z", "ms": -183430315505.73755 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:31 on Mon 9 Mar to 12:44 on Tue 10 Mar.", "fact": "1964-03-09T03:31:26Z → 1964-03-10T04:43:57Z" }, { "step": "kaala", "text": "Sunrise is at 07:09 on the 9th and 07:08 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15719 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Qingyang, 1964: Tuesday 10 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-10", "confidence": "determinate" } ], "quote": "In Qingyang, Pāpamocanī Ekādaśī 1964 falls on Tuesday 10 March. Ekādaśī runs from 11:31 on Mon 9 Mar to 12:44 on Tue 10 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-03-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-03-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20516, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-03-11T13:11:00+08:00", "utc": "1964-03-11T05:11:00Z", "ms": -183322139933.59048 }, "end": { "local": "1964-03-12T12:52:05+08:00", "utc": "1964-03-12T04:52:05Z", "ms": -183236874758.22794 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-11T13:11:00+08:00", "utc": "1964-03-11T05:11:00Z", "ms": -183322139933.59048 }, "end": { "local": "1964-03-12T12:52:05+08:00", "utc": "1964-03-12T04:52:05Z", "ms": -183236874758.22794 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-03-11", "window": { "start": { "local": "1964-03-11T18:52:56+08:00", "utc": "1964-03-11T10:52:56Z", "ms": -183301623937.79895 }, "end": { "local": "1964-03-11T20:30:35+08:00", "utc": "1964-03-11T12:30:35Z", "ms": -183295765092.1486 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "1964-03-12", "window": { "start": { "local": "1964-03-12T18:53:48+08:00", "utc": "1964-03-12T10:53:48Z", "ms": -183215171838.8111 }, "end": { "local": "1964-03-12T20:31:09+08:00", "utc": "1964-03-12T12:31:09Z", "ms": -183209331151.8189 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:11 on Wed 11 Mar to 12:52 on Thu 12 Mar.", "fact": "1964-03-11T05:11:00Z → 1964-03-12T04:52:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:31 on the 11th, 18:54–20:31 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 98 of 98 minutes on the 11th and 0 of 97 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20516 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Wednesday 11 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-11", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Wednesday 11 March. Trayodaśī runs from 13:11 on Wed 11 Mar to 12:52 on Thu 12 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-03-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-03-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37679, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-03-12T12:52:05+08:00", "utc": "1964-03-12T04:52:05Z", "ms": -183236874758.22794 }, "end": { "local": "1964-03-13T11:50:50+08:00", "utc": "1964-03-13T03:50:50Z", "ms": -183154149864.93433 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-12T12:52:05+08:00", "utc": "1964-03-12T04:52:05Z", "ms": -183236874758.22794 }, "end": { "local": "1964-03-13T11:50:50+08:00", "utc": "1964-03-13T03:50:50Z", "ms": -183154149864.93433 } }, "kaala": "nishita", "days": [ { "local_date": "1964-03-11", "window": { "start": { "local": "1964-03-12T00:35:07+08:00", "utc": "1964-03-11T16:35:07Z", "ms": -183281093266.6101 }, "end": { "local": "1964-03-12T01:23:07+08:00", "utc": "1964-03-11T17:23:07Z", "ms": -183278213266.6101 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-03-12", "window": { "start": { "local": "1964-03-13T00:34:51+08:00", "utc": "1964-03-12T16:34:51Z", "ms": -183194709262.5904 }, "end": { "local": "1964-03-13T01:22:51+08:00", "utc": "1964-03-12T17:22:51Z", "ms": -183191829262.5904 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:52 on Thu 12 Mar to 11:51 on Fri 13 Mar.", "fact": "1964-03-12T04:52:05Z → 1964-03-13T03:50:50Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:35–01:23 on the 11th, 00:35–01:23 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37679 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Thursday 12 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-12", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Thursday 12 March. Caturdaśī runs from 12:52 on Thu 12 Mar to 11:51 on Fri 13 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-03-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33709, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-03-17T03:12:21+08:00", "utc": "1964-03-16T19:12:21Z", "ms": -182839659008.76108 }, "end": { "local": "1964-03-18T00:36:54+08:00", "utc": "1964-03-17T16:36:54Z", "ms": -182762585967.74597 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-17T03:12:21+08:00", "utc": "1964-03-16T19:12:21Z", "ms": -182839659008.76108 }, "end": { "local": "1964-03-18T00:36:54+08:00", "utc": "1964-03-17T16:36:54Z", "ms": -182762585967.74597 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-03-17", "window": { "start": { "local": "1964-03-17T12:34:10+08:00", "utc": "1964-03-17T04:34:10Z", "ms": -182805950336.90952 }, "end": { "local": "1964-03-17T13:22:10+08:00", "utc": "1964-03-17T05:22:10Z", "ms": -182803070336.90952 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-03-18", "window": { "start": { "local": "1964-03-18T12:33:52+08:00", "utc": "1964-03-18T04:33:52Z", "ms": -182719567652.93835 }, "end": { "local": "1964-03-18T13:21:52+08:00", "utc": "1964-03-18T05:21:52Z", "ms": -182716687652.93835 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:12 on Tue 17 Mar to 00:37 on Wed 18 Mar.", "fact": "1964-03-16T19:12:21Z → 1964-03-17T16:36:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:34–13:22 on the 17th, 12:34–13:22 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33709 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Tuesday 17 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-17", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Tuesday 17 March. Caturthī runs from 03:12 on Tue 17 Mar to 00:37 on Wed 18 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-03-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-03-24", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17796, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-03-23T12:48:14+08:00", "utc": "1964-03-23T04:48:14Z", "ms": -182286705631.2458 }, "end": { "local": "1964-03-24T11:44:49+08:00", "utc": "1964-03-24T03:44:49Z", "ms": -182204111265.69125 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-23T12:48:14+08:00", "utc": "1964-03-23T04:48:14Z", "ms": -182286705631.2458 }, "end": { "local": "1964-03-24T11:44:49+08:00", "utc": "1964-03-24T03:44:49Z", "ms": -182204111265.69125 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-03-23", "window": { "start": { "local": "1964-03-23T06:49:39+08:00", "utc": "1964-03-22T22:49:39Z", "ms": -182308221128.47766 }, "end": { "local": "1964-03-23T06:49:39+08:00", "utc": "1964-03-22T22:49:39Z", "ms": -182308221128.47766 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-03-24", "window": { "start": { "local": "1964-03-24T06:48:13+08:00", "utc": "1964-03-23T22:48:13Z", "ms": -182221907299.68027 }, "end": { "local": "1964-03-24T06:48:13+08:00", "utc": "1964-03-23T22:48:13Z", "ms": -182221907299.68027 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:48 on Mon 23 Mar to 11:45 on Tue 24 Mar.", "fact": "1964-03-23T04:48:14Z → 1964-03-24T03:44:49Z" }, { "step": "kaala", "text": "Sunrise is at 06:50 on the 23rd and 06:48 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17796 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Qingyang, 1964: Tuesday 24 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-24", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Ekādaśī 1964 falls on Tuesday 24 March. Ekādaśī runs from 12:48 on Mon 23 Mar to 11:45 on Tue 24 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-03-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-03-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29153, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-03-25T10:58:55+08:00", "utc": "1964-03-25T02:58:55Z", "ms": -182120465431.63968 }, "end": { "local": "1964-03-26T10:32:19+08:00", "utc": "1964-03-26T02:32:19Z", "ms": -182035660999.27017 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-25T10:58:55+08:00", "utc": "1964-03-25T02:58:55Z", "ms": -182120465431.63968 }, "end": { "local": "1964-03-26T10:32:19+08:00", "utc": "1964-03-26T02:32:19Z", "ms": -182035660999.27017 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-03-25", "window": { "start": { "local": "1964-03-25T19:04:47+08:00", "utc": "1964-03-25T11:04:47Z", "ms": -182091312741.85086 }, "end": { "local": "1964-03-25T20:38:12+08:00", "utc": "1964-03-25T12:38:12Z", "ms": -182085708328.28366 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1964-03-26", "window": { "start": { "local": "1964-03-26T19:05:37+08:00", "utc": "1964-03-26T11:05:37Z", "ms": -182004863125.5056 }, "end": { "local": "1964-03-26T20:38:43+08:00", "utc": "1964-03-26T12:38:43Z", "ms": -181999276808.22174 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:59 on Wed 25 Mar to 10:32 on Thu 26 Mar.", "fact": "1964-03-25T02:58:55Z → 1964-03-26T02:32:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:38 on the 25th, 19:06–20:39 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 25th and 0 of 93 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29153 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Wednesday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-25", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Wednesday 25 March. Trayodaśī runs from 10:59 on Wed 25 Mar to 10:32 on Thu 26 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-03-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-03-31", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22249, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-03-31T14:45:01+08:00", "utc": "1964-03-31T06:45:01Z", "ms": -181588498505.92078 }, "end": { "local": "1964-04-01T16:59:36+08:00", "utc": "1964-04-01T08:59:36Z", "ms": -181494024225.66132 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-03-31T14:45:01+08:00", "utc": "1964-03-31T06:45:01Z", "ms": -181588498505.92078 }, "end": { "local": "1964-04-01T16:59:36+08:00", "utc": "1964-04-01T08:59:36Z", "ms": -181494024225.66132 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-03-31", "window": { "start": { "local": "1964-03-31T22:13:28+08:00", "utc": "1964-03-31T14:13:28Z", "ms": -181561592294.1633 }, "end": { "local": "1964-03-31T22:13:28+08:00", "utc": "1964-03-31T14:13:28Z", "ms": -181561592294.1633 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-04-01", "window": { "start": { "local": "1964-04-01T23:10:25+08:00", "utc": "1964-04-01T15:10:25Z", "ms": -181471774813.18567 }, "end": { "local": "1964-04-01T23:10:25+08:00", "utc": "1964-04-01T15:10:25Z", "ms": -181471774813.18567 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:45 on Tue 31 Mar to 17:00 on Wed 1 Apr.", "fact": "1964-03-31T06:45:01Z → 1964-04-01T08:59:36Z" }, { "step": "kaala", "text": "Moonrise is at 22:13 on the 31st and 23:10 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 31st and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22249 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Tuesday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-03-31", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Tuesday 31 March. Caturthī runs from 14:45 on Tue 31 Mar to 17:00 on Wed 1 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-04-08", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5837, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-04-08T04:49:40+08:00", "utc": "1964-04-07T20:49:40Z", "ms": -180933020378.574 }, "end": { "local": "1964-04-09T04:38:32+08:00", "utc": "1964-04-08T20:38:32Z", "ms": -180847287500.3093 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-08T04:49:40+08:00", "utc": "1964-04-07T20:49:40Z", "ms": -180933020378.574 }, "end": { "local": "1964-04-09T04:38:32+08:00", "utc": "1964-04-08T20:38:32Z", "ms": -180847287500.3093 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-04-08", "window": { "start": { "local": "1964-04-08T06:26:56+08:00", "utc": "1964-04-07T22:26:56Z", "ms": -180927183583.49524 }, "end": { "local": "1964-04-08T06:26:56+08:00", "utc": "1964-04-07T22:26:56Z", "ms": -180927183583.49524 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-04-09", "window": { "start": { "local": "1964-04-09T06:25:34+08:00", "utc": "1964-04-08T22:25:34Z", "ms": -180840866207.32294 }, "end": { "local": "1964-04-09T06:25:34+08:00", "utc": "1964-04-08T22:25:34Z", "ms": -180840866207.32294 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:50 on Wed 8 Apr to 04:39 on Thu 9 Apr.", "fact": "1964-04-07T20:49:40Z → 1964-04-08T20:38:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:27 on the 8th and 06:26 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is not on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5837 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Qingyang, 1964: Wednesday 8 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-08", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Ekādaśī 1964 falls on Wednesday 8 April. Ekādaśī runs from 04:50 on Wed 8 Apr to 04:39 on Thu 9 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-04-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-04-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18289, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-04-10T03:37:28+08:00", "utc": "1964-04-09T19:37:28Z", "ms": -180764551908.89633 }, "end": { "local": "1964-04-11T01:51:26+08:00", "utc": "1964-04-10T17:51:26Z", "ms": -180684514397.64536 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-10T03:37:28+08:00", "utc": "1964-04-09T19:37:28Z", "ms": -180764551908.89633 }, "end": { "local": "1964-04-11T01:51:26+08:00", "utc": "1964-04-10T17:51:26Z", "ms": -180684514397.64536 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-04-09", "window": { "start": { "local": "1964-04-09T19:17:08+08:00", "utc": "1964-04-09T11:17:08Z", "ms": -180794571665.7068 }, "end": { "local": "1964-04-09T20:46:05+08:00", "utc": "1964-04-09T12:46:05Z", "ms": -180789235224.76074 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "1964-04-10", "window": { "start": { "local": "1964-04-10T19:17:58+08:00", "utc": "1964-04-10T11:17:58Z", "ms": -180708122086.53082 }, "end": { "local": "1964-04-10T20:46:37+08:00", "utc": "1964-04-10T12:46:37Z", "ms": -180702803143.03235 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:37 on Fri 10 Apr to 01:51 on Sat 11 Apr.", "fact": "1964-04-09T19:37:28Z → 1964-04-10T17:51:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:17–20:46 on the 9th, 19:18–20:47 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 89 minutes on the 9th and 89 of 89 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18289 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Friday 10 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-10", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Friday 10 April. Trayodaśī runs from 03:37 on Fri 10 Apr to 01:51 on Sat 11 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-04-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-04-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-10", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2222, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-04-11T01:51:26+08:00", "utc": "1964-04-10T17:51:26Z", "ms": -180684514397.64536 }, "end": { "local": "1964-04-11T23:28:14+08:00", "utc": "1964-04-11T15:28:14Z", "ms": -180606705738.53912 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": true, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-11T01:51:26+08:00", "utc": "1964-04-10T17:51:26Z", "ms": -180684514397.64536 }, "end": { "local": "1964-04-11T23:28:14+08:00", "utc": "1964-04-11T15:28:14Z", "ms": -180606705738.53912 } }, "kaala": "nishita", "days": [ { "local_date": "1964-04-10", "window": { "start": { "local": "1964-04-11T00:26:24+08:00", "utc": "1964-04-10T16:26:24Z", "ms": -180689616048.41153 }, "end": { "local": "1964-04-11T01:14:24+08:00", "utc": "1964-04-10T17:14:24Z", "ms": -180686736048.41153 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-11", "window": { "start": { "local": "1964-04-12T00:26:08+08:00", "utc": "1964-04-11T16:26:08Z", "ms": -180603231794.2676 }, "end": { "local": "1964-04-12T01:14:08+08:00", "utc": "1964-04-11T17:14:08Z", "ms": -180600351794.2676 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:51 on Sat 11 Apr to 23:28 on Sat 11 Apr.", "fact": "1964-04-10T17:51:26Z → 1964-04-11T15:28:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:26–01:14 on the 10th, 00:26–01:14 on the 11th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2222 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Friday 10 April.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-10", "confidence": "boundary" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Friday 10 April. Caturdaśī runs from 01:51 on Sat 11 Apr to 23:28 on Sat 11 Apr, and reaches niśītha on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-04-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28918, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1964-04-13T14:22:06+08:00", "utc": "1964-04-13T06:22:06Z", "ms": -180466673664.9865 }, "end": { "local": "1964-05-14T11:15:10+08:00", "utc": "1964-05-14T03:15:10Z", "ms": -177799490361.92813 } }, "span": { "of": "transit", "start": { "local": "1964-04-13T14:22:06+08:00", "utc": "1964-04-13T06:22:06Z", "ms": -180466673664.9865 }, "end": { "local": "1964-04-13T14:22:06+08:00", "utc": "1964-04-13T06:22:06Z", "ms": -180466673664.9865 } }, "kaala": "day", "days": [ { "local_date": "1964-04-12", "window": { "start": { "local": "1964-04-12T06:21:29+08:00", "utc": "1964-04-11T22:21:29Z", "ms": -180581911136.05777 }, "end": { "local": "1964-04-13T06:20:08+08:00", "utc": "1964-04-12T22:20:08Z", "ms": -180495591710.28137 } }, "covered_min": 0, "window_min": 1439, "qualifies": false }, { "local_date": "1964-04-13", "window": { "start": { "local": "1964-04-13T06:20:08+08:00", "utc": "1964-04-12T22:20:08Z", "ms": -180495591710.28137 }, "end": { "local": "1964-04-14T06:18:48+08:00", "utc": "1964-04-13T22:18:48Z", "ms": -180409271707.73553 } }, "covered_min": 1, "window_min": 1439, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 14:22 on Mon 13 Apr.", "fact": "1964-04-13T06:22:06Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:21 on the 12th, and from 06:20 on the 13th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 28918 s" }, { "step": "ruling", "text": "Vaiśākhī, Qingyang, 1964: Monday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1964-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1964-04-13", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Qingyang, Vaiśākhī 1964 falls on Monday 13 April. The Sun enters Meṣa at 14:22 on Mon 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/qingyang/festivals/1964/vaishakhi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15288, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-04-12T20:37:23+08:00", "utc": "1964-04-12T12:37:23Z", "ms": -180530556509.33456 }, "end": { "local": "1964-04-13T17:29:05+08:00", "utc": "1964-04-13T09:29:05Z", "ms": -180455454829.2133 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-12T20:37:23+08:00", "utc": "1964-04-12T12:37:23Z", "ms": -180530556509.33456 }, "end": { "local": "1964-04-13T17:29:05+08:00", "utc": "1964-04-13T09:29:05Z", "ms": -180455454829.2133 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-12", "window": { "start": { "local": "1964-04-12T12:26:33+08:00", "utc": "1964-04-12T04:26:33Z", "ms": -180560006949.99615 }, "end": { "local": "1964-04-12T13:14:33+08:00", "utc": "1964-04-12T05:14:33Z", "ms": -180557126949.99615 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-13", "window": { "start": { "local": "1964-04-13T12:26:18+08:00", "utc": "1964-04-13T04:26:18Z", "ms": -180473622366.48853 }, "end": { "local": "1964-04-13T13:14:18+08:00", "utc": "1964-04-13T05:14:18Z", "ms": -180470742366.48853 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:37 on Sun 12 Apr to 17:29 on Mon 13 Apr.", "fact": "1964-04-12T12:37:23Z → 1964-04-13T09:29:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 12th, 12:26–13:14 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15288 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Qingyang, 1964: Monday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-13", "confidence": "determinate" } ], "quote": "In Qingyang, Navarātrārambha (Caitra) (Chaitra Navratri) 1964 falls on Monday 13 April. Pratipadā runs from 20:37 on Sun 12 Apr to 17:29 on Mon 13 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/navaratra-arambha-caitra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3566, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-04-14T14:13:29+08:00", "utc": "1964-04-14T06:13:29Z", "ms": -180380790994.89963 }, "end": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-14T14:13:29+08:00", "utc": "1964-04-14T06:13:29Z", "ms": -180380790994.89963 }, "end": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-14", "window": { "start": { "local": "1964-04-14T12:26:03+08:00", "utc": "1964-04-14T04:26:03Z", "ms": -180387237469.7262 }, "end": { "local": "1964-04-14T13:14:03+08:00", "utc": "1964-04-14T05:14:03Z", "ms": -180384357469.7262 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-15", "window": { "start": { "local": "1964-04-15T12:25:48+08:00", "utc": "1964-04-15T04:25:48Z", "ms": -180300852248.93768 }, "end": { "local": "1964-04-15T13:13:48+08:00", "utc": "1964-04-15T05:13:48Z", "ms": -180297972248.93768 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:13 on Tue 14 Apr to 11:00 on Wed 15 Apr.", "fact": "1964-04-14T06:13:29Z → 1964-04-15T03:00:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 14th, 12:26–13:14 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 3566 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Qingyang, 1964: Wednesday 15 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-15", "confidence": "determinate" } ], "quote": "In Qingyang, Gaurī Tṛtīyā (Gangaur) 1964 falls on Wednesday 15 April. Tṛtīyā runs from 14:13 on Tue 14 Apr to 11:00 on Wed 15 Apr, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/gauri-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3566, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-04-14T14:13:29+08:00", "utc": "1964-04-14T06:13:29Z", "ms": -180380790994.89963 }, "end": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-14T14:13:29+08:00", "utc": "1964-04-14T06:13:29Z", "ms": -180380790994.89963 }, "end": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-14", "window": { "start": { "local": "1964-04-14T12:26:03+08:00", "utc": "1964-04-14T04:26:03Z", "ms": -180387237469.7262 }, "end": { "local": "1964-04-14T13:14:03+08:00", "utc": "1964-04-14T05:14:03Z", "ms": -180384357469.7262 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-15", "window": { "start": { "local": "1964-04-15T12:25:48+08:00", "utc": "1964-04-15T04:25:48Z", "ms": -180300852248.93768 }, "end": { "local": "1964-04-15T13:13:48+08:00", "utc": "1964-04-15T05:13:48Z", "ms": -180297972248.93768 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:13 on Tue 14 Apr to 11:00 on Wed 15 Apr.", "fact": "1964-04-14T06:13:29Z → 1964-04-15T03:00:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 14th, 12:26–13:14 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 3566 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Qingyang, 1964: Wednesday 15 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-15", "confidence": "determinate" } ], "quote": "In Qingyang, Saubhāgya Śayana Vrata 1964 falls on Wednesday 15 April. Tṛtīyā runs from 14:13 on Tue 14 Apr to 11:00 on Wed 15 Apr, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/saubhagya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-04-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5140, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 }, "end": { "local": "1964-04-16T07:57:32+08:00", "utc": "1964-04-15T23:57:32Z", "ms": -180230548378.07944 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-15T11:00:08+08:00", "utc": "1964-04-15T03:00:08Z", "ms": -180305991875.91986 }, "end": { "local": "1964-04-16T07:57:32+08:00", "utc": "1964-04-15T23:57:32Z", "ms": -180230548378.07944 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-15", "window": { "start": { "local": "1964-04-15T12:25:48+08:00", "utc": "1964-04-15T04:25:48Z", "ms": -180300852248.93768 }, "end": { "local": "1964-04-15T13:13:48+08:00", "utc": "1964-04-15T05:13:48Z", "ms": -180297972248.93768 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-04-16", "window": { "start": { "local": "1964-04-16T12:25:33+08:00", "utc": "1964-04-16T04:25:33Z", "ms": -180214466693.23322 }, "end": { "local": "1964-04-16T13:13:33+08:00", "utc": "1964-04-16T05:13:33Z", "ms": -180211586693.23322 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:00 on Wed 15 Apr to 07:58 on Thu 16 Apr.", "fact": "1964-04-15T03:00:08Z → 1964-04-15T23:57:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 15th, 12:26–13:14 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5140 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Wednesday 15 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-15", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Wednesday 15 April. Caturthī runs from 11:00 on Wed 15 Apr to 07:58 on Thu 16 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16082, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-04-16T07:57:32+08:00", "utc": "1964-04-15T23:57:32Z", "ms": -180230548378.07944 }, "end": { "local": "1964-04-17T05:12:42+08:00", "utc": "1964-04-16T21:12:42Z", "ms": -180154037731.95575 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-16T07:57:32+08:00", "utc": "1964-04-15T23:57:32Z", "ms": -180230548378.07944 }, "end": { "local": "1964-04-17T05:12:42+08:00", "utc": "1964-04-16T21:12:42Z", "ms": -180154037731.95575 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-16", "window": { "start": { "local": "1964-04-16T12:25:33+08:00", "utc": "1964-04-16T04:25:33Z", "ms": -180214466693.23322 }, "end": { "local": "1964-04-16T13:13:33+08:00", "utc": "1964-04-16T05:13:33Z", "ms": -180211586693.23322 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-04-17", "window": { "start": { "local": "1964-04-17T12:25:19+08:00", "utc": "1964-04-17T04:25:19Z", "ms": -180128080791.17834 }, "end": { "local": "1964-04-17T13:13:19+08:00", "utc": "1964-04-17T05:13:19Z", "ms": -180125200791.17834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 07:58 on Thu 16 Apr to 05:13 on Fri 17 Apr.", "fact": "1964-04-15T23:57:32Z → 1964-04-16T21:12:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 16th, 12:25–13:13 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16082 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Qingyang, 1964: Thursday 16 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-16", "confidence": "determinate" } ], "quote": "In Qingyang, Lakṣmī Pañcamī 1964 falls on Thursday 16 April. Pañcamī runs from 07:58 on Thu 16 Apr to 05:13 on Fri 17 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/lakshmi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36974, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-04-19T00:55:54+08:00", "utc": "1964-04-18T16:55:54Z", "ms": -179996646020.71466 }, "end": { "local": "1964-04-19T23:29:06+08:00", "utc": "1964-04-19T15:29:06Z", "ms": -179915453537.94254 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-19T00:55:54+08:00", "utc": "1964-04-18T16:55:54Z", "ms": -179996646020.71466 }, "end": { "local": "1964-04-19T23:29:06+08:00", "utc": "1964-04-19T15:29:06Z", "ms": -179915453537.94254 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-18", "window": { "start": { "local": "1964-04-18T12:25:05+08:00", "utc": "1964-04-18T04:25:05Z", "ms": -180041694530.5307 }, "end": { "local": "1964-04-18T13:13:05+08:00", "utc": "1964-04-18T05:13:05Z", "ms": -180038814530.5307 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-19", "window": { "start": { "local": "1964-04-19T12:24:52+08:00", "utc": "1964-04-19T04:24:52Z", "ms": -179955307898.18146 }, "end": { "local": "1964-04-19T13:12:52+08:00", "utc": "1964-04-19T05:12:52Z", "ms": -179952427898.18146 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 00:56 on Sun 19 Apr to 23:29 on Sun 19 Apr.", "fact": "1964-04-18T16:55:54Z → 1964-04-19T15:29:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 18th, 12:25–13:13 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36974 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Qingyang, 1964: Sunday 19 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-19", "confidence": "determinate" } ], "quote": "In Qingyang, Bhavānī Utpatti 1964 falls on Sunday 19 April. Aṣṭamī runs from 00:56 on Sun 19 Apr to 23:29 on Sun 19 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/bhavani-utpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33492, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1964-04-19T23:29:06+08:00", "utc": "1964-04-19T15:29:06Z", "ms": -179915453537.94254 }, "end": { "local": "1964-04-20T22:30:51+08:00", "utc": "1964-04-20T14:30:51Z", "ms": -179832549375.87494 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-19T23:29:06+08:00", "utc": "1964-04-19T15:29:06Z", "ms": -179915453537.94254 }, "end": { "local": "1964-04-20T22:30:51+08:00", "utc": "1964-04-20T14:30:51Z", "ms": -179832549375.87494 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-19", "window": { "start": { "local": "1964-04-19T12:24:52+08:00", "utc": "1964-04-19T04:24:52Z", "ms": -179955307898.18146 }, "end": { "local": "1964-04-19T13:12:52+08:00", "utc": "1964-04-19T05:12:52Z", "ms": -179952427898.18146 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-20", "window": { "start": { "local": "1964-04-20T12:24:39+08:00", "utc": "1964-04-20T04:24:39Z", "ms": -179868920880.26334 }, "end": { "local": "1964-04-20T13:12:39+08:00", "utc": "1964-04-20T05:12:39Z", "ms": -179866040880.26334 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 23:29 on Sun 19 Apr to 22:31 on Mon 20 Apr.", "fact": "1964-04-19T15:29:06Z → 1964-04-20T14:30:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 19th, 12:25–13:13 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33492 s" }, { "step": "ruling", "text": "Rāma Navamī, Qingyang, 1964: Monday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-20", "confidence": "determinate" } ], "quote": "In Qingyang, Rāma Navamī 1964 falls on Monday 20 April. Navamī runs from 23:29 on Sun 19 Apr to 22:31 on Mon 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rama-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-04-22", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29292, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-04-21T22:00:20+08:00", "utc": "1964-04-21T14:00:20Z", "ms": -179747979934.322 }, "end": { "local": "1964-04-22T21:56:24+08:00", "utc": "1964-04-22T13:56:24Z", "ms": -179661816369.52533 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-21T22:00:20+08:00", "utc": "1964-04-21T14:00:20Z", "ms": -179747979934.322 }, "end": { "local": "1964-04-22T21:56:24+08:00", "utc": "1964-04-22T13:56:24Z", "ms": -179661816369.52533 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-04-22", "window": { "start": { "local": "1964-04-22T06:08:32+08:00", "utc": "1964-04-21T22:08:32Z", "ms": -179718687725.68707 }, "end": { "local": "1964-04-22T06:08:32+08:00", "utc": "1964-04-21T22:08:32Z", "ms": -179718687725.68707 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-04-23", "window": { "start": { "local": "1964-04-23T06:07:19+08:00", "utc": "1964-04-22T22:07:19Z", "ms": -179632361300.29526 }, "end": { "local": "1964-04-23T06:07:19+08:00", "utc": "1964-04-22T22:07:19Z", "ms": -179632361300.29526 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:00 on Tue 21 Apr to 21:56 on Wed 22 Apr.", "fact": "1964-04-21T14:00:20Z → 1964-04-22T13:56:24Z" }, { "step": "kaala", "text": "Sunrise is at 06:09 on the 22nd and 06:07 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29292 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Qingyang, 1964: Wednesday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-22", "confidence": "determinate" } ], "quote": "In Qingyang, Kāmadā Ekādaśī 1964 falls on Wednesday 22 April. Ekādaśī runs from 22:00 on Tue 21 Apr to 21:56 on Wed 22 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-04-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32753, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-04-23T22:17:56+08:00", "utc": "1964-04-23T14:17:56Z", "ms": -179574124063.04684 }, "end": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-23T22:17:56+08:00", "utc": "1964-04-23T14:17:56Z", "ms": -179574124063.04684 }, "end": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-23", "window": { "start": { "local": "1964-04-23T12:24:03+08:00", "utc": "1964-04-23T04:24:03Z", "ms": -179609757367.4624 }, "end": { "local": "1964-04-23T13:12:03+08:00", "utc": "1964-04-23T05:12:03Z", "ms": -179606877367.4624 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-24", "window": { "start": { "local": "1964-04-24T12:23:51+08:00", "utc": "1964-04-24T04:23:51Z", "ms": -179523368660.86084 }, "end": { "local": "1964-04-24T13:11:51+08:00", "utc": "1964-04-24T05:11:51Z", "ms": -179520488660.86084 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:18 on Thu 23 Apr to 23:04 on Fri 24 Apr.", "fact": "1964-04-23T14:17:56Z → 1964-04-24T15:04:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 23rd, 12:24–13:12 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32753 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Qingyang, 1964: Friday 24 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-24", "confidence": "determinate" } ], "quote": "In Qingyang, Anaṅga Trayodaśī 1964 falls on Friday 24 April. Trayodaśī runs from 22:18 on Thu 23 Apr to 23:04 on Fri 24 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/ananga-trayodashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-04-24", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5051, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-04-23T22:17:56+08:00", "utc": "1964-04-23T14:17:56Z", "ms": -179574124063.04684 }, "end": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-23T22:17:56+08:00", "utc": "1964-04-23T14:17:56Z", "ms": -179574124063.04684 }, "end": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-04-23", "window": { "start": { "local": "1964-04-23T19:28:47+08:00", "utc": "1964-04-23T11:28:47Z", "ms": -179584273434.62955 }, "end": { "local": "1964-04-23T20:53:45+08:00", "utc": "1964-04-23T12:53:45Z", "ms": -179579174845.01385 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1964-04-24", "window": { "start": { "local": "1964-04-24T19:29:37+08:00", "utc": "1964-04-24T11:29:37Z", "ms": -179497823309.2099 }, "end": { "local": "1964-04-24T20:54:19+08:00", "utc": "1964-04-24T12:54:19Z", "ms": -179492740978.88434 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:18 on Thu 23 Apr to 23:04 on Fri 24 Apr.", "fact": "1964-04-23T14:17:56Z → 1964-04-24T15:04:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:29–20:54 on the 23rd, 19:30–20:54 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 23rd and 85 of 85 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5051 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Friday 24 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-24", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Friday 24 April. Trayodaśī runs from 22:18 on Thu 23 Apr to 23:04 on Fri 24 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-04-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35543, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 }, "end": { "local": "1964-04-26T00:14:56+08:00", "utc": "1964-04-25T16:14:56Z", "ms": -179394304442.01147 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-24T23:04:14+08:00", "utc": "1964-04-24T15:04:14Z", "ms": -179484945739.5777 }, "end": { "local": "1964-04-26T00:14:56+08:00", "utc": "1964-04-25T16:14:56Z", "ms": -179394304442.01147 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-24", "window": { "start": { "local": "1964-04-24T12:23:51+08:00", "utc": "1964-04-24T04:23:51Z", "ms": -179523368660.86084 }, "end": { "local": "1964-04-24T13:11:51+08:00", "utc": "1964-04-24T05:11:51Z", "ms": -179520488660.86084 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-04-25", "window": { "start": { "local": "1964-04-25T12:23:41+08:00", "utc": "1964-04-25T04:23:41Z", "ms": -179436979495.40802 }, "end": { "local": "1964-04-25T13:11:41+08:00", "utc": "1964-04-25T05:11:41Z", "ms": -179434099495.40802 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:04 on Fri 24 Apr to 00:15 on Sun 26 Apr.", "fact": "1964-04-24T15:04:14Z → 1964-04-25T16:14:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 24th, 12:24–13:12 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35543 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Qingyang, 1964: Saturday 25 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vishnu-damanaka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Madanabhanji, (Bengal & Orissa) (paraviddha), Sivadamanaka caturdasi, Visnudamanaka caturdasi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-25", "confidence": "determinate" } ], "quote": "In Qingyang, Viṣṇudamanaka Caturdaśī 1964 falls on Saturday 25 April. Caturdaśī runs from 23:04 on Fri 24 Apr to 00:15 on Sun 26 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vishnu-damanaka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38028, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-04-26T00:14:56+08:00", "utc": "1964-04-25T16:14:56Z", "ms": -179394304442.01147 }, "end": { "local": "1964-04-27T01:49:32+08:00", "utc": "1964-04-26T17:49:32Z", "ms": -179302227923.2538 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1964-04-26T00:14:56+08:00", "utc": "1964-04-25T16:14:56Z", "ms": -179394304442.01147 }, "end": { "local": "1964-04-27T01:49:32+08:00", "utc": "1964-04-26T17:49:32Z", "ms": -179302227923.2538 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-04-26", "window": { "start": { "local": "1964-04-26T12:23:30+08:00", "utc": "1964-04-26T04:23:30Z", "ms": -179350589857.04364 }, "end": { "local": "1964-04-26T13:11:30+08:00", "utc": "1964-04-26T05:11:30Z", "ms": -179347709857.04364 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-04-27", "window": { "start": { "local": "1964-04-27T12:23:20+08:00", "utc": "1964-04-27T04:23:20Z", "ms": -179264199732.27344 }, "end": { "local": "1964-04-27T13:11:20+08:00", "utc": "1964-04-27T05:11:20Z", "ms": -179261319732.27344 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:15 on Sun 26 Apr to 01:50 on Mon 27 Apr.", "fact": "1964-04-25T16:14:56Z → 1964-04-26T17:49:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 26th, 12:23–13:11 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38028 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Qingyang, 1964: Sunday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chaitri-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-26", "confidence": "determinate" } ], "quote": "In Qingyang, Caitrī Pūrṇimā 1964 falls on Sunday 26 April. Pūrṇimā runs from 00:15 on Sun 26 Apr to 01:50 on Mon 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/chaitri-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-04-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38182, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-04-30T08:35:14+08:00", "utc": "1964-04-30T00:35:14Z", "ms": -179018685550.39038 }, "end": { "local": "1964-05-01T11:12:38+08:00", "utc": "1964-05-01T03:12:38Z", "ms": -178922841858.54523 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-04-30T08:35:14+08:00", "utc": "1964-04-30T00:35:14Z", "ms": -179018685550.39038 }, "end": { "local": "1964-05-01T11:12:38+08:00", "utc": "1964-05-01T03:12:38Z", "ms": -178922841858.54523 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-04-29", "window": { "start": { "local": "1964-04-29T21:58:52+08:00", "utc": "1964-04-29T13:58:52Z", "ms": -179056867534.2417 }, "end": { "local": "1964-04-29T21:58:52+08:00", "utc": "1964-04-29T13:58:52Z", "ms": -179056867534.2417 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-04-30", "window": { "start": { "local": "1964-04-30T22:54:27+08:00", "utc": "1964-04-30T14:54:27Z", "ms": -178967132633.5899 }, "end": { "local": "1964-04-30T22:54:27+08:00", "utc": "1964-04-30T14:54:27Z", "ms": -178967132633.5899 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:35 on Thu 30 Apr to 11:13 on Fri 1 May.", "fact": "1964-04-30T00:35:14Z → 1964-05-01T03:12:38Z" }, { "step": "kaala", "text": "Moonrise is at 21:59 on the 29th and 22:54 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38182 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Thursday 30 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-04-30", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Thursday 30 April. Caturthī runs from 08:35 on Thu 30 Apr to 11:13 on Fri 1 May and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-04-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-05-08", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39745, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-05-07T18:20:54+08:00", "utc": "1964-05-07T10:20:54Z", "ms": -178378746214.8136 }, "end": { "local": "1964-05-08T16:53:20+08:00", "utc": "1964-05-08T08:53:20Z", "ms": -178297600147.1275 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-07T18:20:54+08:00", "utc": "1964-05-07T10:20:54Z", "ms": -178378746214.8136 }, "end": { "local": "1964-05-08T16:53:20+08:00", "utc": "1964-05-08T08:53:20Z", "ms": -178297600147.1275 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-05-07", "window": { "start": { "local": "1964-05-07T05:51:53+08:00", "utc": "1964-05-06T21:51:53Z", "ms": -178423687129.2608 }, "end": { "local": "1964-05-07T05:51:53+08:00", "utc": "1964-05-06T21:51:53Z", "ms": -178423687129.2608 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-05-08", "window": { "start": { "local": "1964-05-08T05:50:55+08:00", "utc": "1964-05-07T21:50:55Z", "ms": -178337344654.09122 }, "end": { "local": "1964-05-08T05:50:55+08:00", "utc": "1964-05-07T21:50:55Z", "ms": -178337344654.09122 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:21 on Thu 7 May to 16:53 on Fri 8 May.", "fact": "1964-05-07T10:20:54Z → 1964-05-08T08:53:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:52 on the 7th and 05:51 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39745 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Qingyang, 1964: Friday 8 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-08", "confidence": "determinate" } ], "quote": "In Qingyang, Varūthinī Ekādaśī 1964 falls on Friday 8 May. Ekādaśī runs from 18:21 on Thu 7 May to 16:53 on Fri 8 May and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-05-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-05-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18060, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-05-09T14:41:08+08:00", "utc": "1964-05-09T06:41:08Z", "ms": -178219131626.67313 }, "end": { "local": "1964-05-10T11:52:04+08:00", "utc": "1964-05-10T03:52:04Z", "ms": -178142875729.97076 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-09T14:41:08+08:00", "utc": "1964-05-09T06:41:08Z", "ms": -178219131626.67313 }, "end": { "local": "1964-05-10T11:52:04+08:00", "utc": "1964-05-10T03:52:04Z", "ms": -178142875729.97076 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-05-09", "window": { "start": { "local": "1964-05-09T19:42:08+08:00", "utc": "1964-05-09T11:42:08Z", "ms": -178201072107.44177 }, "end": { "local": "1964-05-09T21:03:03+08:00", "utc": "1964-05-09T13:03:03Z", "ms": -178196216600.49258 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1964-05-10", "window": { "start": { "local": "1964-05-10T19:42:57+08:00", "utc": "1964-05-10T11:42:57Z", "ms": -178114622625.56833 }, "end": { "local": "1964-05-10T21:03:39+08:00", "utc": "1964-05-10T13:03:39Z", "ms": -178109780860.31686 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:41 on Sat 9 May to 11:52 on Sun 10 May.", "fact": "1964-05-09T06:41:08Z → 1964-05-10T03:52:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:42–21:03 on the 9th, 19:43–21:04 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 81 of 81 minutes on the 9th and 0 of 81 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18060 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Saturday 9 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-09", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Saturday 9 May. Trayodaśī runs from 14:41 on Sat 9 May to 11:52 on Sun 10 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-05-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-05-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26756, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-05-10T11:52:04+08:00", "utc": "1964-05-10T03:52:04Z", "ms": -178142875729.97076 }, "end": { "local": "1964-05-11T08:35:30+08:00", "utc": "1964-05-11T00:35:30Z", "ms": -178068270046.91663 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-10T11:52:04+08:00", "utc": "1964-05-10T03:52:04Z", "ms": -178142875729.97076 }, "end": { "local": "1964-05-11T08:35:30+08:00", "utc": "1964-05-11T00:35:30Z", "ms": -178068270046.91663 } }, "kaala": "nishita", "days": [ { "local_date": "1964-05-09", "window": { "start": { "local": "1964-05-10T00:21:36+08:00", "utc": "1964-05-09T16:21:36Z", "ms": -178184303956.38232 }, "end": { "local": "1964-05-10T01:09:36+08:00", "utc": "1964-05-09T17:09:36Z", "ms": -178181423956.38232 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-05-10", "window": { "start": { "local": "1964-05-11T00:21:34+08:00", "utc": "1964-05-10T16:21:34Z", "ms": -178097906005.8753 }, "end": { "local": "1964-05-11T01:09:34+08:00", "utc": "1964-05-10T17:09:34Z", "ms": -178095026005.8753 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:52 on Sun 10 May to 08:35 on Mon 11 May.", "fact": "1964-05-10T03:52:04Z → 1964-05-11T00:35:30Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:22–01:10 on the 9th, 00:22–01:10 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26756 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Sunday 10 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-10", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Sunday 10 May. Caturdaśī runs from 11:52 on Sun 10 May to 08:35 on Mon 11 May and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-13", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2262, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-05-13T21:43:09+08:00", "utc": "1964-05-13T13:43:09Z", "ms": -177848211452.3002 }, "end": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-13T21:43:09+08:00", "utc": "1964-05-13T13:43:09Z", "ms": -177848211452.3002 }, "end": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-05-13", "window": { "start": { "local": "1964-05-13T19:45:25+08:00", "utc": "1964-05-13T11:45:25Z", "ms": -177855275433.93332 }, "end": { "local": "1964-05-13T21:05:26+08:00", "utc": "1964-05-13T13:05:26Z", "ms": -177850473630.80734 } }, "covered_min": 0, "window_min": 80, "qualifies": false }, { "local_date": "1964-05-14", "window": { "start": { "local": "1964-05-14T19:46:13+08:00", "utc": "1964-05-14T11:46:13Z", "ms": -177768826891.89566 }, "end": { "local": "1964-05-14T21:06:02+08:00", "utc": "1964-05-14T13:06:02Z", "ms": -177764037966.34225 } }, "covered_min": 0, "window_min": 80, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:43 on Wed 13 May to 18:18 on Thu 14 May.", "fact": "1964-05-13T13:43:09Z → 1964-05-14T10:18:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:45–21:05 on the 13th, 19:46–21:06 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 80 minutes on the 13th and 0 of 80 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2262 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Qingyang, 1964: Wednesday 13 May.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-13", "confidence": "boundary" } ], "quote": "In Qingyang, Paraśurāma Jayantī 1964 falls on Wednesday 13 May. Tṛtīyā runs from 21:43 on Wed 13 May to 18:18 on Thu 14 May, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/parashurama-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28336, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-05-13T21:43:09+08:00", "utc": "1964-05-13T13:43:09Z", "ms": -177848211452.3002 }, "end": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-13T21:43:09+08:00", "utc": "1964-05-13T13:43:09Z", "ms": -177848211452.3002 }, "end": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 } }, "kaala": "purvahna", "days": [ { "local_date": "1964-05-13", "window": { "start": { "local": "1964-05-13T05:46:28+08:00", "utc": "1964-05-12T21:46:28Z", "ms": -177905612457.5284 }, "end": { "local": "1964-05-13T10:26:07+08:00", "utc": "1964-05-13T02:26:07Z", "ms": -177888833449.6634 } }, "covered_min": 0, "window_min": 280, "qualifies": false }, { "local_date": "1964-05-14", "window": { "start": { "local": "1964-05-14T05:45:38+08:00", "utc": "1964-05-13T21:45:38Z", "ms": -177819261910.48843 }, "end": { "local": "1964-05-14T10:25:50+08:00", "utc": "1964-05-14T02:25:50Z", "ms": -177802450237.62418 } }, "covered_min": 280, "window_min": 280, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:43 on Wed 13 May to 18:18 on Thu 14 May.", "fact": "1964-05-13T13:43:09Z → 1964-05-14T10:18:06Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:46–10:26 on the 13th, 05:46–10:26 on the 14th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 0 of 280 minutes on the 13th and 280 of 280 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28336 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Qingyang, 1964: Thursday 14 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-14", "confidence": "determinate" } ], "quote": "In Qingyang, Akṣaya Tṛtīyā 1964 falls on Thursday 14 May. Tṛtīyā runs from 21:43 on Wed 13 May to 18:18 on Thu 14 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/akshaya-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-05-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7449, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 }, "end": { "local": "1964-05-15T15:14:05+08:00", "utc": "1964-05-15T07:14:05Z", "ms": -177698755321.71625 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-14T18:18:06+08:00", "utc": "1964-05-14T10:18:06Z", "ms": -177774114199.1792 }, "end": { "local": "1964-05-15T15:14:05+08:00", "utc": "1964-05-15T07:14:05Z", "ms": -177698755321.71625 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-14", "window": { "start": { "local": "1964-05-14T12:21:56+08:00", "utc": "1964-05-14T04:21:56Z", "ms": -177795484401.19205 }, "end": { "local": "1964-05-14T13:09:56+08:00", "utc": "1964-05-14T05:09:56Z", "ms": -177792604401.19205 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-05-15", "window": { "start": { "local": "1964-05-15T12:21:56+08:00", "utc": "1964-05-15T04:21:56Z", "ms": -177709084307.80334 }, "end": { "local": "1964-05-15T13:09:56+08:00", "utc": "1964-05-15T05:09:56Z", "ms": -177706204307.80334 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:18 on Thu 14 May to 15:14 on Fri 15 May.", "fact": "1964-05-14T10:18:06Z → 1964-05-15T07:14:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 14th, 12:22–13:10 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7449 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Friday 15 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-15", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Friday 15 May. Caturthī runs from 18:18 on Thu 14 May to 15:14 on Fri 15 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-05-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 973, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-05-15T15:14:05+08:00", "utc": "1964-05-15T07:14:05Z", "ms": -177698755321.71625 }, "end": { "local": "1964-05-16T12:38:09+08:00", "utc": "1964-05-16T04:38:09Z", "ms": -177621710587.20816 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-15T15:14:05+08:00", "utc": "1964-05-15T07:14:05Z", "ms": -177698755321.71625 }, "end": { "local": "1964-05-16T12:38:09+08:00", "utc": "1964-05-16T04:38:09Z", "ms": -177621710587.20816 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-15", "window": { "start": { "local": "1964-05-15T12:21:56+08:00", "utc": "1964-05-15T04:21:56Z", "ms": -177709084307.80334 }, "end": { "local": "1964-05-15T13:09:56+08:00", "utc": "1964-05-15T05:09:56Z", "ms": -177706204307.80334 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-05-16", "window": { "start": { "local": "1964-05-16T12:21:56+08:00", "utc": "1964-05-16T04:21:56Z", "ms": -177622683672.45325 }, "end": { "local": "1964-05-16T13:09:56+08:00", "utc": "1964-05-16T05:09:56Z", "ms": -177619803672.45325 } }, "covered_min": 16, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 15:14 on Fri 15 May to 12:38 on Sat 16 May.", "fact": "1964-05-15T07:14:05Z → 1964-05-16T04:38:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 15th, 12:22–13:10 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 16 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 973 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Qingyang, 1964: Saturday 16 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-16", "confidence": "determinate" } ], "quote": "In Qingyang, Śaṅkara Jayantī 1964 falls on Saturday 16 May. Pañcamī runs from 15:14 on Fri 15 May to 12:38 on Sat 16 May and covers 16 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/shankara-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6374, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-05-17T10:35:44+08:00", "utc": "1964-05-17T02:35:44Z", "ms": -177542656015.7691 }, "end": { "local": "1964-05-18T09:10:17+08:00", "utc": "1964-05-18T01:10:17Z", "ms": -177461383213.38052 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-17T10:35:44+08:00", "utc": "1964-05-17T02:35:44Z", "ms": -177542656015.7691 }, "end": { "local": "1964-05-18T09:10:17+08:00", "utc": "1964-05-18T01:10:17Z", "ms": -177461383213.38052 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-17", "window": { "start": { "local": "1964-05-17T12:21:57+08:00", "utc": "1964-05-17T04:21:57Z", "ms": -177536282501.38074 }, "end": { "local": "1964-05-17T13:09:57+08:00", "utc": "1964-05-17T05:09:57Z", "ms": -177533402501.38074 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-05-18", "window": { "start": { "local": "1964-05-18T12:21:59+08:00", "utc": "1964-05-18T04:21:59Z", "ms": -177449880800.18237 }, "end": { "local": "1964-05-18T13:09:59+08:00", "utc": "1964-05-18T05:09:59Z", "ms": -177447000800.18237 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:36 on Sun 17 May to 09:10 on Mon 18 May.", "fact": "1964-05-17T02:35:44Z → 1964-05-18T01:10:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 17th, 12:22–13:10 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6374 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Qingyang, 1964: Sunday 17 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-17", "confidence": "determinate" } ], "quote": "In Qingyang, Gaṅgotpatti (Ganga Saptami) 1964 falls on Sunday 17 May. Saptamī runs from 10:36 on Sun 17 May to 09:10 on Mon 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/gangotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-05-22", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10793, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-05-21T08:40:26+08:00", "utc": "1964-05-21T00:40:26Z", "ms": -177203974242.0545 }, "end": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-21T08:40:26+08:00", "utc": "1964-05-21T00:40:26Z", "ms": -177203974242.0545 }, "end": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-05-21", "window": { "start": { "local": "1964-05-21T05:40:33+08:00", "utc": "1964-05-20T21:40:33Z", "ms": -177214767419.47903 }, "end": { "local": "1964-05-21T05:40:33+08:00", "utc": "1964-05-20T21:40:33Z", "ms": -177214767419.47903 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-05-22", "window": { "start": { "local": "1964-05-22T05:39:55+08:00", "utc": "1964-05-21T21:39:55Z", "ms": -177128405019.54147 }, "end": { "local": "1964-05-22T05:39:55+08:00", "utc": "1964-05-21T21:39:55Z", "ms": -177128405019.54147 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:40 on Thu 21 May to 09:39 on Fri 22 May.", "fact": "1964-05-21T00:40:26Z → 1964-05-22T01:39:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:41 on the 21st and 05:40 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 21st and is on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10793 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Qingyang, 1964: Friday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-22", "confidence": "determinate" } ], "quote": "In Qingyang, Mohinī Ekādaśī 1964 falls on Friday 22 May. Ekādaśī runs from 08:40 on Thu 21 May to 09:39 on Fri 22 May and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-05-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4592, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 }, "end": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 }, "end": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-22", "window": { "start": { "local": "1964-05-22T12:22:11+08:00", "utc": "1964-05-22T04:22:11Z", "ms": -177104268796.1163 }, "end": { "local": "1964-05-22T13:10:11+08:00", "utc": "1964-05-22T05:10:11Z", "ms": -177101388796.1163 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-05-23", "window": { "start": { "local": "1964-05-23T12:22:15+08:00", "utc": "1964-05-23T04:22:15Z", "ms": -177017864521.53882 }, "end": { "local": "1964-05-23T13:10:15+08:00", "utc": "1964-05-23T05:10:15Z", "ms": -177014984521.53882 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:39 on Fri 22 May to 11:06 on Sat 23 May.", "fact": "1964-05-22T01:39:03Z → 1964-05-23T03:05:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 22nd, 12:22–13:10 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4592 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Qingyang, 1964: Friday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-22", "confidence": "determinate" } ], "quote": "In Qingyang, Paraśurāma Dvādaśī 1964 falls on Friday 22 May. Dvādaśī runs from 09:39 on Fri 22 May to 11:06 on Sat 23 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/parashurama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4592, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 }, "end": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-22T09:39:03+08:00", "utc": "1964-05-22T01:39:03Z", "ms": -177114057369.98175 }, "end": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-22", "window": { "start": { "local": "1964-05-22T12:22:11+08:00", "utc": "1964-05-22T04:22:11Z", "ms": -177104268796.1163 }, "end": { "local": "1964-05-22T13:10:11+08:00", "utc": "1964-05-22T05:10:11Z", "ms": -177101388796.1163 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-05-23", "window": { "start": { "local": "1964-05-23T12:22:15+08:00", "utc": "1964-05-23T04:22:15Z", "ms": -177017864521.53882 }, "end": { "local": "1964-05-23T13:10:15+08:00", "utc": "1964-05-23T05:10:15Z", "ms": -177014984521.53882 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:39 on Fri 22 May to 11:06 on Sat 23 May.", "fact": "1964-05-22T01:39:03Z → 1964-05-23T03:05:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 22nd, 12:22–13:10 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4592 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Qingyang, 1964: Friday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-22", "confidence": "determinate" } ], "quote": "In Qingyang, Rukmiṇī Dvādaśī 1964 falls on Friday 22 May. Dvādaśī runs from 09:39 on Fri 22 May to 11:06 on Sat 23 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rukmini-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-05-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25075, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 }, "end": { "local": "1964-05-24T12:56:01+08:00", "utc": "1964-05-24T04:56:01Z", "ms": -176929439095.2203 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-23T11:05:43+08:00", "utc": "1964-05-23T03:05:43Z", "ms": -177022456721.0221 }, "end": { "local": "1964-05-24T12:56:01+08:00", "utc": "1964-05-24T04:56:01Z", "ms": -176929439095.2203 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-05-23", "window": { "start": { "local": "1964-05-23T19:53:12+08:00", "utc": "1964-05-23T11:53:12Z", "ms": -176990807991.05963 }, "end": { "local": "1964-05-23T21:11:16+08:00", "utc": "1964-05-23T13:11:16Z", "ms": -176986123658.87732 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1964-05-24", "window": { "start": { "local": "1964-05-24T19:53:56+08:00", "utc": "1964-05-24T11:53:56Z", "ms": -176904363998.92276 }, "end": { "local": "1964-05-24T21:11:50+08:00", "utc": "1964-05-24T13:11:50Z", "ms": -176899689911.89258 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:06 on Sat 23 May to 12:56 on Sun 24 May.", "fact": "1964-05-23T03:05:43Z → 1964-05-24T04:56:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:53–21:11 on the 23rd, 19:54–21:12 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 23rd and 0 of 78 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25075 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Saturday 23 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-23", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Saturday 23 May. Trayodaśī runs from 11:06 on Sat 23 May to 12:56 on Sun 24 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-05-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17360, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-05-24T12:56:01+08:00", "utc": "1964-05-24T04:56:01Z", "ms": -176929439095.2203 }, "end": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-24T12:56:01+08:00", "utc": "1964-05-24T04:56:01Z", "ms": -176929439095.2203 }, "end": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-05-24", "window": { "start": { "local": "1964-05-24T19:53:56+08:00", "utc": "1964-05-24T11:53:56Z", "ms": -176904363998.92276 }, "end": { "local": "1964-05-24T21:11:50+08:00", "utc": "1964-05-24T13:11:50Z", "ms": -176899689911.89258 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1964-05-25", "window": { "start": { "local": "1964-05-25T19:54:39+08:00", "utc": "1964-05-25T11:54:39Z", "ms": -176817920626.35577 }, "end": { "local": "1964-05-25T21:12:24+08:00", "utc": "1964-05-25T13:12:24Z", "ms": -176813256486.31503 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:56 on Sun 24 May to 15:05 on Mon 25 May.", "fact": "1964-05-24T04:56:01Z → 1964-05-25T07:05:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:54–21:12 on the 24th, 19:55–21:12 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 24th and 0 of 78 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17360 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Qingyang, 1964: Sunday 24 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-24", "confidence": "determinate" } ], "quote": "In Qingyang, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1964 falls on Sunday 24 May. Caturdaśī runs from 12:56 on Sun 24 May to 15:05 on Mon 25 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/nrisimha-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6894, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 }, "end": { "local": "1964-05-26T17:28:46+08:00", "utc": "1964-05-26T09:28:46Z", "ms": -176740274277.97177 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 }, "end": { "local": "1964-05-26T17:28:46+08:00", "utc": "1964-05-26T09:28:46Z", "ms": -176740274277.97177 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-25", "window": { "start": { "local": "1964-05-25T12:22:26+08:00", "utc": "1964-05-25T04:22:26Z", "ms": -176845054486.27606 }, "end": { "local": "1964-05-25T13:10:26+08:00", "utc": "1964-05-25T05:10:26Z", "ms": -176842174486.27606 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-05-26", "window": { "start": { "local": "1964-05-26T12:22:31+08:00", "utc": "1964-05-26T04:22:31Z", "ms": -176758648739.97696 }, "end": { "local": "1964-05-26T13:10:31+08:00", "utc": "1964-05-26T05:10:31Z", "ms": -176755768739.97696 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:05 on Mon 25 May to 17:29 on Tue 26 May.", "fact": "1964-05-25T07:05:19Z → 1964-05-26T09:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 25th, 12:23–13:11 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6894 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Qingyang, 1964: Tuesday 26 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "buddha-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-26", "confidence": "determinate" } ], "quote": "In Qingyang, Buddha Pūrṇimā 1964 falls on Tuesday 26 May. Pūrṇimā runs from 15:05 on Mon 25 May to 17:29 on Tue 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/buddha-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6894, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 }, "end": { "local": "1964-05-26T17:28:46+08:00", "utc": "1964-05-26T09:28:46Z", "ms": -176740274277.97177 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-25T15:05:19+08:00", "utc": "1964-05-25T07:05:19Z", "ms": -176835280713.93802 }, "end": { "local": "1964-05-26T17:28:46+08:00", "utc": "1964-05-26T09:28:46Z", "ms": -176740274277.97177 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-05-25", "window": { "start": { "local": "1964-05-25T12:22:26+08:00", "utc": "1964-05-25T04:22:26Z", "ms": -176845054486.27606 }, "end": { "local": "1964-05-25T13:10:26+08:00", "utc": "1964-05-25T05:10:26Z", "ms": -176842174486.27606 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-05-26", "window": { "start": { "local": "1964-05-26T12:22:31+08:00", "utc": "1964-05-26T04:22:31Z", "ms": -176758648739.97696 }, "end": { "local": "1964-05-26T13:10:31+08:00", "utc": "1964-05-26T05:10:31Z", "ms": -176755768739.97696 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:05 on Mon 25 May to 17:29 on Tue 26 May.", "fact": "1964-05-25T07:05:19Z → 1964-05-26T09:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 25th, 12:23–13:11 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6894 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Qingyang, 1964: Tuesday 26 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sampat-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-26", "confidence": "determinate" } ], "quote": "In Qingyang, Sampat Gaurī Vrata 1964 falls on Tuesday 26 May. Pūrṇimā runs from 15:05 on Mon 25 May to 17:29 on Tue 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/sampat-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-05-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8976, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-05-30T01:03:55+08:00", "utc": "1964-05-29T17:03:55Z", "ms": -176453765224.63974 }, "end": { "local": "1964-05-31T03:18:22+08:00", "utc": "1964-05-30T19:18:22Z", "ms": -176359298321.62326 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-05-30T01:03:55+08:00", "utc": "1964-05-29T17:03:55Z", "ms": -176453765224.63974 }, "end": { "local": "1964-05-31T03:18:22+08:00", "utc": "1964-05-30T19:18:22Z", "ms": -176359298321.62326 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-05-29", "window": { "start": { "local": "1964-05-29T22:34:19+08:00", "utc": "1964-05-29T14:34:19Z", "ms": -176462741358.32874 }, "end": { "local": "1964-05-29T22:34:19+08:00", "utc": "1964-05-29T14:34:19Z", "ms": -176462741358.32874 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-05-30", "window": { "start": { "local": "1964-05-30T23:21:34+08:00", "utc": "1964-05-30T15:21:34Z", "ms": -176373506181.15073 }, "end": { "local": "1964-05-30T23:21:34+08:00", "utc": "1964-05-30T15:21:34Z", "ms": -176373506181.15073 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:04 on Sat 30 May to 03:18 on Sun 31 May.", "fact": "1964-05-29T17:03:55Z → 1964-05-30T19:18:22Z" }, { "step": "kaala", "text": "Moonrise is at 22:34 on the 29th and 23:22 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8976 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Saturday 30 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-05-30", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Saturday 30 May. Caturthī runs from 01:04 on Sat 30 May to 03:18 on Sun 31 May and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-05-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-06-06", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4159, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-06-06T04:24:28+08:00", "utc": "1964-06-05T20:24:28Z", "ms": -175836931617.94815 }, "end": { "local": "1964-06-07T02:03:59+08:00", "utc": "1964-06-06T18:03:59Z", "ms": -175758961037.62173 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-06T04:24:28+08:00", "utc": "1964-06-05T20:24:28Z", "ms": -175836931617.94815 }, "end": { "local": "1964-06-07T02:03:59+08:00", "utc": "1964-06-06T18:03:59Z", "ms": -175758961037.62173 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-06-06", "window": { "start": { "local": "1964-06-06T05:33:47+08:00", "utc": "1964-06-05T21:33:47Z", "ms": -175832773046.42355 }, "end": { "local": "1964-06-06T05:33:47+08:00", "utc": "1964-06-05T21:33:47Z", "ms": -175832773046.42355 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-06-07", "window": { "start": { "local": "1964-06-07T05:33:36+08:00", "utc": "1964-06-06T21:33:36Z", "ms": -175746384081.42102 }, "end": { "local": "1964-06-07T05:33:36+08:00", "utc": "1964-06-06T21:33:36Z", "ms": -175746384081.42102 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:24 on Sat 6 Jun to 02:04 on Sun 7 Jun.", "fact": "1964-06-05T20:24:28Z → 1964-06-06T18:03:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 6th and 05:34 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 6th and is not on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4159 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Qingyang, 1964: Saturday 6 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-06", "confidence": "determinate" } ], "quote": "In Qingyang, Aparā Ekādaśī 1964 falls on Saturday 6 June. Ekādaśī runs from 04:24 on Sat 6 Jun to 02:04 on Sun 7 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-06-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-06-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-07", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 957, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-06-07T23:08:56+08:00", "utc": "1964-06-07T15:08:56Z", "ms": -175683064495.32135 }, "end": { "local": "1964-06-08T19:47:26+08:00", "utc": "1964-06-08T11:47:26Z", "ms": -175608753755.44183 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-07T23:08:56+08:00", "utc": "1964-06-07T15:08:56Z", "ms": -175683064495.32135 }, "end": { "local": "1964-06-08T19:47:26+08:00", "utc": "1964-06-08T11:47:26Z", "ms": -175608753755.44183 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-06-07", "window": { "start": { "local": "1964-06-07T20:02:52+08:00", "utc": "1964-06-07T12:02:52Z", "ms": -175694227861.97916 }, "end": { "local": "1964-06-07T21:18:57+08:00", "utc": "1964-06-07T13:18:57Z", "ms": -175689663269.00537 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "1964-06-08", "window": { "start": { "local": "1964-06-08T20:03:23+08:00", "utc": "1964-06-08T12:03:23Z", "ms": -175607796642.27716 }, "end": { "local": "1964-06-08T21:19:23+08:00", "utc": "1964-06-08T13:19:23Z", "ms": -175603237230.53882 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:09 on Sun 7 Jun to 19:47 on Mon 8 Jun.", "fact": "1964-06-07T15:08:56Z → 1964-06-08T11:47:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:03–21:19 on the 7th, 20:03–21:19 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 7th and 0 of 76 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 957 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Sunday 7 June.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-07", "confidence": "boundary" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Sunday 7 June. Trayodaśī runs from 23:09 on Sun 7 Jun to 19:47 on Mon 8 Jun, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-06-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-06-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16615, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-06-08T19:47:26+08:00", "utc": "1964-06-08T11:47:26Z", "ms": -175608753755.44183 }, "end": { "local": "1964-06-09T16:08:40+08:00", "utc": "1964-06-09T08:08:40Z", "ms": -175535480151.25488 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-08T19:47:26+08:00", "utc": "1964-06-08T11:47:26Z", "ms": -175608753755.44183 }, "end": { "local": "1964-06-09T16:08:40+08:00", "utc": "1964-06-09T08:08:40Z", "ms": -175535480151.25488 } }, "kaala": "nishita", "days": [ { "local_date": "1964-06-08", "window": { "start": { "local": "1964-06-09T00:24:21+08:00", "utc": "1964-06-08T16:24:21Z", "ms": -175592138848.25836 }, "end": { "local": "1964-06-09T01:12:21+08:00", "utc": "1964-06-08T17:12:21Z", "ms": -175589258848.25836 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-06-09", "window": { "start": { "local": "1964-06-10T00:24:33+08:00", "utc": "1964-06-09T16:24:33Z", "ms": -175505726788.34152 }, "end": { "local": "1964-06-10T01:12:33+08:00", "utc": "1964-06-09T17:12:33Z", "ms": -175502846788.34152 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:47 on Mon 8 Jun to 16:09 on Tue 9 Jun.", "fact": "1964-06-08T11:47:26Z → 1964-06-09T08:08:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:24–01:12 on the 8th, 00:25–01:13 on the 9th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16615 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Monday 8 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-08", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Monday 8 June. Caturdaśī runs from 19:47 on Mon 8 Jun to 16:09 on Tue 9 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-06-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26364, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-06-12T05:05:47+08:00", "utc": "1964-06-11T21:05:47Z", "ms": -175316052704.09198 }, "end": { "local": "1964-06-13T01:54:31+08:00", "utc": "1964-06-12T17:54:31Z", "ms": -175241129066.3538 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-12T05:05:47+08:00", "utc": "1964-06-11T21:05:47Z", "ms": -175316052704.09198 }, "end": { "local": "1964-06-13T01:54:31+08:00", "utc": "1964-06-12T17:54:31Z", "ms": -175241129066.3538 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-06-12", "window": { "start": { "local": "1964-06-12T12:25:11+08:00", "utc": "1964-06-12T04:25:11Z", "ms": -175289688767.51294 }, "end": { "local": "1964-06-12T13:13:11+08:00", "utc": "1964-06-12T05:13:11Z", "ms": -175286808767.51294 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-06-13", "window": { "start": { "local": "1964-06-13T12:25:23+08:00", "utc": "1964-06-13T04:25:23Z", "ms": -175203276715.99115 }, "end": { "local": "1964-06-13T13:13:23+08:00", "utc": "1964-06-13T05:13:23Z", "ms": -175200396715.99115 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 05:06 on Fri 12 Jun to 01:55 on Sat 13 Jun.", "fact": "1964-06-11T21:05:47Z → 1964-06-12T17:54:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 12th, 12:25–13:13 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26364 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Qingyang, 1964: Friday 12 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-12", "confidence": "determinate" } ], "quote": "In Qingyang, Rambhā Tṛtīyā 1964 falls on Friday 12 June. Tṛtīyā runs from 05:06 on Fri 12 Jun to 01:55 on Sat 13 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rambha-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-06-13", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35954, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-06-13T01:54:31+08:00", "utc": "1964-06-12T17:54:31Z", "ms": -175241129066.3538 }, "end": { "local": "1964-06-13T23:12:37+08:00", "utc": "1964-06-13T15:12:37Z", "ms": -175164442941.05133 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-13T01:54:31+08:00", "utc": "1964-06-12T17:54:31Z", "ms": -175241129066.3538 }, "end": { "local": "1964-06-13T23:12:37+08:00", "utc": "1964-06-13T15:12:37Z", "ms": -175164442941.05133 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-06-12", "window": { "start": { "local": "1964-06-12T12:25:11+08:00", "utc": "1964-06-12T04:25:11Z", "ms": -175289688767.51294 }, "end": { "local": "1964-06-12T13:13:11+08:00", "utc": "1964-06-12T05:13:11Z", "ms": -175286808767.51294 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-06-13", "window": { "start": { "local": "1964-06-13T12:25:23+08:00", "utc": "1964-06-13T04:25:23Z", "ms": -175203276715.99115 }, "end": { "local": "1964-06-13T13:13:23+08:00", "utc": "1964-06-13T05:13:23Z", "ms": -175200396715.99115 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:55 on Sat 13 Jun to 23:13 on Sat 13 Jun.", "fact": "1964-06-12T17:54:31Z → 1964-06-13T15:12:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 12th, 12:25–13:13 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35954 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Saturday 13 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-13", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Saturday 13 June. Caturthī runs from 01:55 on Sat 13 Jun to 23:13 on Sat 13 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23376, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-06-14T21:07:09+08:00", "utc": "1964-06-14T13:07:09Z", "ms": -175085570728.77292 }, "end": { "local": "1964-06-15T19:43:24+08:00", "utc": "1964-06-15T11:43:24Z", "ms": -175004195746.17538 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-14T21:07:09+08:00", "utc": "1964-06-14T13:07:09Z", "ms": -175085570728.77292 }, "end": { "local": "1964-06-15T19:43:24+08:00", "utc": "1964-06-15T11:43:24Z", "ms": -175004195746.17538 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-06-14", "window": { "start": { "local": "1964-06-14T12:25:35+08:00", "utc": "1964-06-14T04:25:35Z", "ms": -175116864523.80963 }, "end": { "local": "1964-06-14T13:13:35+08:00", "utc": "1964-06-14T05:13:35Z", "ms": -175113984523.80963 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-06-15", "window": { "start": { "local": "1964-06-15T12:25:48+08:00", "utc": "1964-06-15T04:25:48Z", "ms": -175030452216.1177 }, "end": { "local": "1964-06-15T13:13:48+08:00", "utc": "1964-06-15T05:13:48Z", "ms": -175027572216.1177 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:07 on Sun 14 Jun to 19:43 on Mon 15 Jun.", "fact": "1964-06-14T13:07:09Z → 1964-06-15T11:43:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 14th, 12:26–13:14 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23376 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Qingyang, 1964: Monday 15 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-15", "confidence": "determinate" } ], "quote": "In Qingyang, Araṇya Gaurī Vrata 1964 falls on Monday 15 June. Ṣaṣṭhī runs from 21:07 on Sun 14 Jun to 19:43 on Mon 15 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/aranya-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23376, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-06-14T21:07:09+08:00", "utc": "1964-06-14T13:07:09Z", "ms": -175085570728.77292 }, "end": { "local": "1964-06-15T19:43:24+08:00", "utc": "1964-06-15T11:43:24Z", "ms": -175004195746.17538 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-14T21:07:09+08:00", "utc": "1964-06-14T13:07:09Z", "ms": -175085570728.77292 }, "end": { "local": "1964-06-15T19:43:24+08:00", "utc": "1964-06-15T11:43:24Z", "ms": -175004195746.17538 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-06-14", "window": { "start": { "local": "1964-06-14T12:25:35+08:00", "utc": "1964-06-14T04:25:35Z", "ms": -175116864523.80963 }, "end": { "local": "1964-06-14T13:13:35+08:00", "utc": "1964-06-14T05:13:35Z", "ms": -175113984523.80963 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-06-15", "window": { "start": { "local": "1964-06-15T12:25:48+08:00", "utc": "1964-06-15T04:25:48Z", "ms": -175030452216.1177 }, "end": { "local": "1964-06-15T13:13:48+08:00", "utc": "1964-06-15T05:13:48Z", "ms": -175027572216.1177 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:07 on Sun 14 Jun to 19:43 on Mon 15 Jun.", "fact": "1964-06-14T13:07:09Z → 1964-06-15T11:43:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 14th, 12:26–13:14 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23376 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Qingyang, 1964: Monday 15 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-15", "confidence": "determinate" } ], "quote": "In Qingyang, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1964 falls on Monday 15 June. Ṣaṣṭhī runs from 21:07 on Sun 14 Jun to 19:43 on Mon 15 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/skanda-shashthi-jyaishtha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-06-20", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22494, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-06-19T21:23:51+08:00", "utc": "1964-06-19T13:23:51Z", "ms": -174652569207.02676 }, "end": { "local": "1964-06-20T23:19:00+08:00", "utc": "1964-06-20T15:19:00Z", "ms": -174559259741.13058 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-19T21:23:51+08:00", "utc": "1964-06-19T13:23:51Z", "ms": -174652569207.02676 }, "end": { "local": "1964-06-20T23:19:00+08:00", "utc": "1964-06-20T15:19:00Z", "ms": -174559259741.13058 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-06-20", "window": { "start": { "local": "1964-06-20T05:33:43+08:00", "utc": "1964-06-19T21:33:43Z", "ms": -174623177309.74313 }, "end": { "local": "1964-06-20T05:33:43+08:00", "utc": "1964-06-19T21:33:43Z", "ms": -174623177309.74313 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-06-21", "window": { "start": { "local": "1964-06-21T05:33:54+08:00", "utc": "1964-06-20T21:33:54Z", "ms": -174536765782.53406 }, "end": { "local": "1964-06-21T05:33:54+08:00", "utc": "1964-06-20T21:33:54Z", "ms": -174536765782.53406 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:24 on Fri 19 Jun to 23:19 on Sat 20 Jun.", "fact": "1964-06-19T13:23:51Z → 1964-06-20T15:19:00Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 20th and 05:34 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22494 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Qingyang, 1964: Saturday 20 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-20", "confidence": "determinate" } ], "quote": "In Qingyang, Nirjalā Ekādaśī 1964 falls on Saturday 20 June. Ekādaśī runs from 21:24 on Fri 19 Jun to 23:19 on Sat 20 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-06-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36250, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-06-20T23:19:00+08:00", "utc": "1964-06-20T15:19:00Z", "ms": -174559259741.13058 }, "end": { "local": "1964-06-22T01:35:30+08:00", "utc": "1964-06-21T17:35:30Z", "ms": -174464670118.83484 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-20T23:19:00+08:00", "utc": "1964-06-20T15:19:00Z", "ms": -174559259741.13058 }, "end": { "local": "1964-06-22T01:35:30+08:00", "utc": "1964-06-21T17:35:30Z", "ms": -174464670118.83484 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-06-20", "window": { "start": { "local": "1964-06-20T12:26:50+08:00", "utc": "1964-06-20T04:26:50Z", "ms": -174598389754.3954 }, "end": { "local": "1964-06-20T13:14:50+08:00", "utc": "1964-06-20T05:14:50Z", "ms": -174595509754.3954 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-06-21", "window": { "start": { "local": "1964-06-21T12:27:03+08:00", "utc": "1964-06-21T04:27:03Z", "ms": -174511977230.0736 }, "end": { "local": "1964-06-21T13:15:03+08:00", "utc": "1964-06-21T05:15:03Z", "ms": -174509097230.0736 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:19 on Sat 20 Jun to 01:35 on Mon 22 Jun.", "fact": "1964-06-20T15:19:00Z → 1964-06-21T17:35:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 20th, 12:27–13:15 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36250 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Qingyang, 1964: Sunday 21 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-21", "confidence": "determinate" } ], "quote": "In Qingyang, Śrī Rāma Dvādaśī 1964 falls on Sunday 21 June. Dvādaśī runs from 23:19 on Sat 20 Jun to 01:35 on Mon 22 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/shri-rama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-06-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15111, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-06-22T01:35:30+08:00", "utc": "1964-06-21T17:35:30Z", "ms": -174464670118.83484 }, "end": { "local": "1964-06-23T04:04:35+08:00", "utc": "1964-06-22T20:04:35Z", "ms": -174369325138.8961 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-22T01:35:30+08:00", "utc": "1964-06-21T17:35:30Z", "ms": -174464670118.83484 }, "end": { "local": "1964-06-23T04:04:35+08:00", "utc": "1964-06-22T20:04:35Z", "ms": -174369325138.8961 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-06-21", "window": { "start": { "local": "1964-06-21T20:08:11+08:00", "utc": "1964-06-21T12:08:11Z", "ms": -174484308677.6132 }, "end": { "local": "1964-06-21T21:23:39+08:00", "utc": "1964-06-21T13:23:39Z", "ms": -174479781224.1223 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1964-06-22", "window": { "start": { "local": "1964-06-22T20:08:23+08:00", "utc": "1964-06-22T12:08:23Z", "ms": -174397896711.6091 }, "end": { "local": "1964-06-22T21:23:51+08:00", "utc": "1964-06-22T13:23:51Z", "ms": -174393368925.2185 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:35 on Mon 22 Jun to 04:05 on Tue 23 Jun.", "fact": "1964-06-21T17:35:30Z → 1964-06-22T20:04:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:08–21:24 on the 21st, 20:08–21:24 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 75 minutes on the 21st and 75 of 75 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15111 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Monday 22 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-22", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Monday 22 June. Trayodaśī runs from 01:35 on Mon 22 Jun to 04:05 on Tue 23 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-06-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33233, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-06-24T06:37:55+08:00", "utc": "1964-06-23T22:37:55Z", "ms": -174273724544.54865 }, "end": { "local": "1964-06-25T09:07:59+08:00", "utc": "1964-06-25T01:07:59Z", "ms": -174178321046.3292 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-24T06:37:55+08:00", "utc": "1964-06-23T22:37:55Z", "ms": -174273724544.54865 }, "end": { "local": "1964-06-25T09:07:59+08:00", "utc": "1964-06-25T01:07:59Z", "ms": -174178321046.3292 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-06-23", "window": { "start": { "local": "1964-06-23T20:08:34+08:00", "utc": "1964-06-23T12:08:34Z", "ms": -174311486319.5107 }, "end": { "local": "1964-06-23T21:24:02+08:00", "utc": "1964-06-23T13:24:02Z", "ms": -174306957799.23013 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1964-06-24", "window": { "start": { "local": "1964-06-24T20:08:42+08:00", "utc": "1964-06-24T12:08:42Z", "ms": -174225077518.36615 }, "end": { "local": "1964-06-24T21:24:12+08:00", "utc": "1964-06-24T13:24:12Z", "ms": -174220547864.1286 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:38 on Wed 24 Jun to 09:08 on Thu 25 Jun.", "fact": "1964-06-23T22:37:55Z → 1964-06-25T01:07:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:09–21:24 on the 23rd, 20:09–21:24 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 75 minutes on the 23rd and 75 of 75 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33233 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Qingyang, 1964: Wednesday 24 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-24", "confidence": "determinate" } ], "quote": "In Qingyang, Vaṭa Sāvitrī Vrata 1964 falls on Wednesday 24 June. Pūrṇimā runs from 06:38 on Wed 24 Jun to 09:08 on Thu 25 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/vata-savitri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-06-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24542, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-06-28T15:14:37+08:00", "utc": "1964-06-28T07:14:37Z", "ms": -173897122867.92044 }, "end": { "local": "1964-06-29T16:30:34+08:00", "utc": "1964-06-29T08:30:34Z", "ms": -173806166237.47006 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-06-28T15:14:37+08:00", "utc": "1964-06-28T07:14:37Z", "ms": -173897122867.92044 }, "end": { "local": "1964-06-29T16:30:34+08:00", "utc": "1964-06-29T08:30:34Z", "ms": -173806166237.47006 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-06-28", "window": { "start": { "local": "1964-06-28T22:43:47+08:00", "utc": "1964-06-28T14:43:47Z", "ms": -173870172818.47885 }, "end": { "local": "1964-06-28T22:43:47+08:00", "utc": "1964-06-28T14:43:47Z", "ms": -173870172818.47885 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-06-29", "window": { "start": { "local": "1964-06-29T23:19:35+08:00", "utc": "1964-06-29T15:19:35Z", "ms": -173781624591.24777 }, "end": { "local": "1964-06-29T23:19:35+08:00", "utc": "1964-06-29T15:19:35Z", "ms": -173781624591.24777 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:15 on Sun 28 Jun to 16:31 on Mon 29 Jun.", "fact": "1964-06-28T07:14:37Z → 1964-06-29T08:30:34Z" }, { "step": "kaala", "text": "Moonrise is at 22:44 on the 28th and 23:20 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24542 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Sunday 28 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-06-28", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Sunday 28 June. Caturthī runs from 15:15 on Sun 28 Jun to 16:31 on Mon 29 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-06-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-07-06", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12625, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-07-05T11:55:32+08:00", "utc": "1964-07-05T03:55:32Z", "ms": -173304268152.56723 }, "end": { "local": "1964-07-06T09:09:56+08:00", "utc": "1964-07-06T01:09:56Z", "ms": -173227803912.38675 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-05T11:55:32+08:00", "utc": "1964-07-05T03:55:32Z", "ms": -173304268152.56723 }, "end": { "local": "1964-07-06T09:09:56+08:00", "utc": "1964-07-06T01:09:56Z", "ms": -173227803912.38675 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-07-05", "window": { "start": { "local": "1964-07-05T05:39:00+08:00", "utc": "1964-07-04T21:39:00Z", "ms": -173326860390.50677 }, "end": { "local": "1964-07-05T05:39:00+08:00", "utc": "1964-07-04T21:39:00Z", "ms": -173326860390.50677 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-07-06", "window": { "start": { "local": "1964-07-06T05:39:31+08:00", "utc": "1964-07-05T21:39:31Z", "ms": -173240429407.71173 }, "end": { "local": "1964-07-06T05:39:31+08:00", "utc": "1964-07-05T21:39:31Z", "ms": -173240429407.71173 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:56 on Sun 5 Jul to 09:10 on Mon 6 Jul.", "fact": "1964-07-05T03:55:32Z → 1964-07-06T01:09:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:39 on the 5th and 05:40 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12625 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Qingyang, 1964: Monday 6 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-06", "confidence": "determinate" } ], "quote": "In Qingyang, Yoginī Ekādaśī 1964 falls on Monday 6 July. Ekādaśī runs from 11:56 on Sun 5 Jul to 09:10 on Mon 6 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-07-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-07-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18680, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-07-07T06:00:55+08:00", "utc": "1964-07-06T22:00:55Z", "ms": -173152745199.98462 }, "end": { "local": "1964-07-08T02:35:47+08:00", "utc": "1964-07-07T18:35:47Z", "ms": -173078653239.11554 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-07T06:00:55+08:00", "utc": "1964-07-06T22:00:55Z", "ms": -173152745199.98462 }, "end": { "local": "1964-07-08T02:35:47+08:00", "utc": "1964-07-07T18:35:47Z", "ms": -173078653239.11554 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-07-06", "window": { "start": { "local": "1964-07-06T20:08:19+08:00", "utc": "1964-07-06T12:08:19Z", "ms": -173188300539.5929 }, "end": { "local": "1964-07-06T21:24:33+08:00", "utc": "1964-07-06T13:24:33Z", "ms": -173183726784.76248 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "1964-07-07", "window": { "start": { "local": "1964-07-07T20:08:07+08:00", "utc": "1964-07-07T12:08:07Z", "ms": -173101913442.18622 }, "end": { "local": "1964-07-07T21:24:26+08:00", "utc": "1964-07-07T13:24:26Z", "ms": -173097333562.29565 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:01 on Tue 7 Jul to 02:36 on Wed 8 Jul.", "fact": "1964-07-06T22:00:55Z → 1964-07-07T18:35:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:08–21:25 on the 6th, 20:08–21:24 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 6th and 76 of 76 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18680 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Tuesday 7 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-07", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Tuesday 7 July. Trayodaśī runs from 06:01 on Tue 7 Jul to 02:36 on Wed 8 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-07-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-07-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-07", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4646, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-07-08T02:35:47+08:00", "utc": "1964-07-07T18:35:47Z", "ms": -173078653239.11554 }, "end": { "local": "1964-07-08T23:02:46+08:00", "utc": "1964-07-08T15:02:46Z", "ms": -173005033705.4784 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-08T02:35:47+08:00", "utc": "1964-07-07T18:35:47Z", "ms": -173078653239.11554 }, "end": { "local": "1964-07-08T23:02:46+08:00", "utc": "1964-07-08T15:02:46Z", "ms": -173005033705.4784 } }, "kaala": "nishita", "days": [ { "local_date": "1964-07-07", "window": { "start": { "local": "1964-07-08T00:30:21+08:00", "utc": "1964-07-07T16:30:21Z", "ms": -173086178892.59662 }, "end": { "local": "1964-07-08T01:18:21+08:00", "utc": "1964-07-07T17:18:21Z", "ms": -173083298892.59662 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-07-08", "window": { "start": { "local": "1964-07-09T00:30:31+08:00", "utc": "1964-07-08T16:30:31Z", "ms": -172999769203.40692 }, "end": { "local": "1964-07-09T01:18:31+08:00", "utc": "1964-07-08T17:18:31Z", "ms": -172996889203.40692 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:36 on Wed 8 Jul to 23:03 on Wed 8 Jul.", "fact": "1964-07-07T18:35:47Z → 1964-07-08T15:02:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 7th, 00:31–01:19 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 4646 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Tuesday 7 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-07", "confidence": "boundary" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Tuesday 7 July. Caturdaśī runs from 02:36 on Wed 8 Jul to 23:03 on Wed 8 Jul, and reaches niśītha on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-07-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 702, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1964-07-10T16:09:04+08:00", "utc": "1964-07-10T08:09:04Z", "ms": -172857056312.43234 }, "end": { "local": "1964-07-11T13:06:57+08:00", "utc": "1964-07-11T05:06:57Z", "ms": -172781583332.70737 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-10T16:09:04+08:00", "utc": "1964-07-10T08:09:04Z", "ms": -172857056312.43234 }, "end": { "local": "1964-07-11T13:06:57+08:00", "utc": "1964-07-11T05:06:57Z", "ms": -172781583332.70737 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-07-10", "window": { "start": { "local": "1964-07-10T12:30:31+08:00", "utc": "1964-07-10T04:30:31Z", "ms": -172870168950.7254 }, "end": { "local": "1964-07-10T13:18:31+08:00", "utc": "1964-07-10T05:18:31Z", "ms": -172867288950.7254 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-07-11", "window": { "start": { "local": "1964-07-11T12:30:39+08:00", "utc": "1964-07-11T04:30:39Z", "ms": -172783760952.2131 }, "end": { "local": "1964-07-11T13:18:39+08:00", "utc": "1964-07-11T05:18:39Z", "ms": -172780880952.2131 } }, "covered_min": 36, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 16:09 on Fri 10 Jul to 13:07 on Sat 11 Jul.", "fact": "1964-07-10T08:09:04Z → 1964-07-11T05:06:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 10th, 12:31–13:19 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 36 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 702 s" }, { "step": "ruling", "text": "Rathayātrā, Qingyang, 1964: Saturday 11 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-11", "confidence": "determinate" } ], "quote": "In Qingyang, Rathayātrā 1964 falls on Saturday 11 July. Dvitīyā runs from 16:09 on Fri 10 Jul to 13:07 on Sat 11 Jul and covers 36 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rathayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-07-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7042, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-07-12T10:33:25+08:00", "utc": "1964-07-12T02:33:25Z", "ms": -172704395281.37268 }, "end": { "local": "1964-07-13T08:36:34+08:00", "utc": "1964-07-13T00:36:34Z", "ms": -172625005665.2567 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-12T10:33:25+08:00", "utc": "1964-07-12T02:33:25Z", "ms": -172704395281.37268 }, "end": { "local": "1964-07-13T08:36:34+08:00", "utc": "1964-07-13T00:36:34Z", "ms": -172625005665.2567 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-07-12", "window": { "start": { "local": "1964-07-12T12:30:47+08:00", "utc": "1964-07-12T04:30:47Z", "ms": -172697353401.1756 }, "end": { "local": "1964-07-12T13:18:47+08:00", "utc": "1964-07-12T05:18:47Z", "ms": -172694473401.1756 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-07-13", "window": { "start": { "local": "1964-07-13T12:30:54+08:00", "utc": "1964-07-13T04:30:54Z", "ms": -172610946317.1173 }, "end": { "local": "1964-07-13T13:18:54+08:00", "utc": "1964-07-13T05:18:54Z", "ms": -172608066317.1173 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:33 on Sun 12 Jul to 08:37 on Mon 13 Jul.", "fact": "1964-07-12T02:33:25Z → 1964-07-13T00:36:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 12th, 12:31–13:19 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7042 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Sunday 12 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-12", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Sunday 12 July. Caturthī runs from 10:33 on Sun 12 Jul to 08:37 on Mon 13 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-07-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14059, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-07-13T08:36:34+08:00", "utc": "1964-07-13T00:36:34Z", "ms": -172625005665.2567 }, "end": { "local": "1964-07-14T07:22:57+08:00", "utc": "1964-07-13T23:22:57Z", "ms": -172543022670.10837 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-13T08:36:34+08:00", "utc": "1964-07-13T00:36:34Z", "ms": -172625005665.2567 }, "end": { "local": "1964-07-14T07:22:57+08:00", "utc": "1964-07-13T23:22:57Z", "ms": -172543022670.10837 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-07-13", "window": { "start": { "local": "1964-07-13T12:30:54+08:00", "utc": "1964-07-13T04:30:54Z", "ms": -172610946317.1173 }, "end": { "local": "1964-07-13T13:18:54+08:00", "utc": "1964-07-13T05:18:54Z", "ms": -172608066317.1173 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-07-14", "window": { "start": { "local": "1964-07-14T12:31:00+08:00", "utc": "1964-07-14T04:31:00Z", "ms": -172524539717.46698 }, "end": { "local": "1964-07-14T13:19:00+08:00", "utc": "1964-07-14T05:19:00Z", "ms": -172521659717.46698 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:37 on Mon 13 Jul to 07:23 on Tue 14 Jul.", "fact": "1964-07-13T00:36:34Z → 1964-07-13T23:22:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 13th, 12:31–13:19 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14059 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Qingyang, 1964: Monday 13 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-13", "confidence": "determinate" } ], "quote": "In Qingyang, Skanda Pañcamī 1964 falls on Monday 13 July. Pañcamī runs from 08:37 on Mon 13 Jul to 07:23 on Tue 14 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/skanda-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18754, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-07-15T06:56:41+08:00", "utc": "1964-07-14T22:56:41Z", "ms": -172458199064.96216 }, "end": { "local": "1964-07-16T07:18:38+08:00", "utc": "1964-07-15T23:18:38Z", "ms": -172370482143.1057 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-15T06:56:41+08:00", "utc": "1964-07-14T22:56:41Z", "ms": -172458199064.96216 }, "end": { "local": "1964-07-16T07:18:38+08:00", "utc": "1964-07-15T23:18:38Z", "ms": -172370482143.1057 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-07-15", "window": { "start": { "local": "1964-07-15T12:31:06+08:00", "utc": "1964-07-15T04:31:06Z", "ms": -172438133617.6743 }, "end": { "local": "1964-07-15T13:19:06+08:00", "utc": "1964-07-15T05:19:06Z", "ms": -172435253617.6743 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-07-16", "window": { "start": { "local": "1964-07-16T12:31:12+08:00", "utc": "1964-07-16T04:31:12Z", "ms": -172351728031.41876 }, "end": { "local": "1964-07-16T13:19:12+08:00", "utc": "1964-07-16T05:19:12Z", "ms": -172348848031.41876 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 06:57 on Wed 15 Jul to 07:19 on Thu 16 Jul.", "fact": "1964-07-14T22:56:41Z → 1964-07-15T23:18:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 15th, 12:31–13:19 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18754 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Qingyang, 1964: Wednesday 15 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-15", "confidence": "determinate" } ], "quote": "In Qingyang, Vivasvat Saptamī 1964 falls on Wednesday 15 July. Saptamī runs from 06:57 on Wed 15 Jul to 07:19 on Thu 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vivasvat-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-07-20", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23866, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-07-19T12:25:20+08:00", "utc": "1964-07-19T04:25:20Z", "ms": -172092880398.4674 }, "end": { "local": "1964-07-20T14:55:26+08:00", "utc": "1964-07-20T06:55:26Z", "ms": -171997473519.60092 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-19T12:25:20+08:00", "utc": "1964-07-19T04:25:20Z", "ms": -172092880398.4674 }, "end": { "local": "1964-07-20T14:55:26+08:00", "utc": "1964-07-20T06:55:26Z", "ms": -171997473519.60092 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-07-19", "window": { "start": { "local": "1964-07-19T05:47:34+08:00", "utc": "1964-07-18T21:47:34Z", "ms": -172116746449.17398 }, "end": { "local": "1964-07-19T05:47:34+08:00", "utc": "1964-07-18T21:47:34Z", "ms": -172116746449.17398 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-07-20", "window": { "start": { "local": "1964-07-20T05:48:15+08:00", "utc": "1964-07-19T21:48:15Z", "ms": -172030304505.04526 }, "end": { "local": "1964-07-20T05:48:15+08:00", "utc": "1964-07-19T21:48:15Z", "ms": -172030304505.04526 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:25 on Sun 19 Jul to 14:55 on Mon 20 Jul.", "fact": "1964-07-19T04:25:20Z → 1964-07-20T06:55:26Z" }, { "step": "kaala", "text": "Sunrise is at 05:48 on the 19th and 05:48 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 19th and is on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23866 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Qingyang, 1964: Monday 20 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-20", "confidence": "determinate" } ], "quote": "In Qingyang, Hariśayanī Ekādaśī 1964 falls on Monday 20 July. Ekādaśī runs from 12:25 on Sun 19 Jul to 14:55 on Mon 20 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-07-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-07-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-21", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 292, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-07-21T17:29:31+08:00", "utc": "1964-07-21T09:29:31Z", "ms": -171901828803.2142 }, "end": { "local": "1964-07-22T19:56:36+08:00", "utc": "1964-07-22T11:56:36Z", "ms": -171806604191.20764 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-21T17:29:31+08:00", "utc": "1964-07-21T09:29:31Z", "ms": -171901828803.2142 }, "end": { "local": "1964-07-22T19:56:36+08:00", "utc": "1964-07-22T11:56:36Z", "ms": -171806604191.20764 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-07-21", "window": { "start": { "local": "1964-07-21T20:02:06+08:00", "utc": "1964-07-21T12:02:06Z", "ms": -171892674308.17584 }, "end": { "local": "1964-07-21T21:20:26+08:00", "utc": "1964-07-21T13:20:26Z", "ms": -171887973616.7629 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1964-07-22", "window": { "start": { "local": "1964-07-22T20:01:27+08:00", "utc": "1964-07-22T12:01:27Z", "ms": -171806312645.54123 }, "end": { "local": "1964-07-22T21:19:59+08:00", "utc": "1964-07-22T13:19:59Z", "ms": -171801601058.83926 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:30 on Tue 21 Jul to 19:57 on Wed 22 Jul.", "fact": "1964-07-21T09:29:31Z → 1964-07-22T11:56:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:02–21:20 on the 21st, 20:01–21:20 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 21st and 0 of 79 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 292 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Tuesday 21 July.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-21", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-21", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Tuesday 21 July. Trayodaśī runs from 17:30 on Tue 21 Jul to 19:57 on Wed 22 Jul and covers all of pradoṣa that evening. It is 4 min 52 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-07-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21246, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 } }, "kaala": "udaya-3", "days": [ { "local_date": "1964-07-24", "window": { "start": { "local": "1964-07-24T05:51:08+08:00", "utc": "1964-07-23T21:51:08Z", "ms": -171684531949.3317 }, "end": { "local": "1964-07-24T08:40:56+08:00", "utc": "1964-07-24T00:40:56Z", "ms": -171674344374.07748 } }, "covered_min": 170, "window_min": 170, "qualifies": true }, { "local_date": "1964-07-25", "window": { "start": { "local": "1964-07-25T05:51:52+08:00", "utc": "1964-07-24T21:51:52Z", "ms": -171598087762.28146 }, "end": { "local": "1964-07-25T08:41:22+08:00", "utc": "1964-07-25T00:41:22Z", "ms": -171587917633.86136 } }, "covered_min": 0, "window_min": 170, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.", "fact": "1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:51–08:41 on the 24th, 05:52–08:41 on the 25th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 170 of 170 minutes on the 24th and 0 of 170 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21246 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Qingyang, 1964: Friday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-24", "confidence": "determinate" } ], "quote": "In Qingyang, Vyāsa Pūjā 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/qingyang/festivals/1964/vyasa-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31705, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-07-23", "window": { "start": { "local": "1964-07-23T12:31:36+08:00", "utc": "1964-07-23T04:31:36Z", "ms": -171746904159.74207 }, "end": { "local": "1964-07-23T13:19:36+08:00", "utc": "1964-07-23T05:19:36Z", "ms": -171744024159.74207 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-07-24", "window": { "start": { "local": "1964-07-24T12:31:37+08:00", "utc": "1964-07-24T04:31:37Z", "ms": -171660503011.19617 }, "end": { "local": "1964-07-24T13:19:37+08:00", "utc": "1964-07-24T05:19:37Z", "ms": -171657623011.19617 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.", "fact": "1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 23rd, 12:32–13:20 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31705 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Qingyang, 1964: Friday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "guru-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-24", "confidence": "determinate" } ], "quote": "In Qingyang, Guru Pūrṇimā 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/guru-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7634, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 } }, "kaala": "sayahna", "days": [ { "local_date": "1964-07-23", "window": { "start": { "local": "1964-07-23T17:10:43+08:00", "utc": "1964-07-23T09:10:43Z", "ms": -171730157208.42148 }, "end": { "local": "1964-07-23T20:00:47+08:00", "utc": "1964-07-23T12:00:47Z", "ms": -171719952574.20773 } }, "covered_min": 0, "window_min": 170, "qualifies": false }, { "local_date": "1964-07-24", "window": { "start": { "local": "1964-07-24T17:10:18+08:00", "utc": "1964-07-24T09:10:18Z", "ms": -171643781648.31488 }, "end": { "local": "1964-07-24T20:00:06+08:00", "utc": "1964-07-24T12:00:06Z", "ms": -171633594073.06067 } }, "covered_min": 170, "window_min": 170, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.", "fact": "1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:11–20:01 on the 23rd, 17:10–20:00 on the 24th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 170 minutes on the 23rd and 170 of 170 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7634 s" }, { "step": "ruling", "text": "Kokilā Vrata, Qingyang, 1964: Friday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kokila-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-24", "confidence": "determinate" } ], "quote": "In Qingyang, Kokilā Vrata 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/kokila-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2911, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1964-07-23T22:08:01+08:00", "utc": "1964-07-23T14:08:01Z", "ms": -171712318931.29694 }, "end": { "local": "1964-07-24T23:57:46+08:00", "utc": "1964-07-24T15:57:46Z", "ms": -171619333632.61755 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-07-23", "window": { "start": { "local": "1964-07-23T20:00:47+08:00", "utc": "1964-07-23T12:00:47Z", "ms": -171719952574.20773 }, "end": { "local": "1964-07-23T21:19:30+08:00", "utc": "1964-07-23T13:19:30Z", "ms": -171715229824.22427 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "1964-07-24", "window": { "start": { "local": "1964-07-24T20:00:06+08:00", "utc": "1964-07-24T12:00:06Z", "ms": -171633594073.06067 }, "end": { "local": "1964-07-24T21:19:00+08:00", "utc": "1964-07-24T13:19:00Z", "ms": -171628859898.2901 } }, "covered_min": 79, "window_min": 79, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.", "fact": "1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:01–21:20 on the 23rd, 20:00–21:19 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 79 minutes on the 23rd and 79 of 79 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2911 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Qingyang, 1964: Friday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shiva-shayanotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-24", "confidence": "determinate" } ], "quote": "In Qingyang, Śiva Śayanotsava 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/shiva-shayanotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16706, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1964-07-26T01:22:16+08:00", "utc": "1964-07-25T17:22:16Z", "ms": -171527864208.60953 }, "end": { "local": "1964-07-27T02:19:44+08:00", "utc": "1964-07-26T18:19:44Z", "ms": -171438015668.24112 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-07-26T01:22:16+08:00", "utc": "1964-07-25T17:22:16Z", "ms": -171527864208.60953 }, "end": { "local": "1964-07-27T02:19:44+08:00", "utc": "1964-07-26T18:19:44Z", "ms": -171438015668.24112 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-07-25", "window": { "start": { "local": "1964-07-25T20:43:50+08:00", "utc": "1964-07-25T12:43:50Z", "ms": -171544569954.7712 }, "end": { "local": "1964-07-25T20:43:50+08:00", "utc": "1964-07-25T12:43:50Z", "ms": -171544569954.7712 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-07-26", "window": { "start": { "local": "1964-07-26T21:21:07+08:00", "utc": "1964-07-26T13:21:07Z", "ms": -171455933203.09653 }, "end": { "local": "1964-07-26T21:21:07+08:00", "utc": "1964-07-26T13:21:07Z", "ms": -171455933203.09653 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 01:22 on Sun 26 Jul to 02:20 on Mon 27 Jul.", "fact": "1964-07-25T17:22:16Z → 1964-07-26T18:19:44Z" }, { "step": "kaala", "text": "Moonrise is at 20:44 on the 25th and 21:21 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16706 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Qingyang, 1964: Sunday 26 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata-ashadha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal)." } ], "not_evaluated": "In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-26", "confidence": "determinate" } ], "quote": "In Qingyang, Aśūnya Śayana Vrata (Āṣāḍha) 1964 falls on Sunday 26 July. Dvitīyā runs from 01:22 on Sun 26 Jul to 02:20 on Mon 27 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ashunya-shayana-vrata-ashadha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-07-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15952, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-07-28T02:49:39+08:00", "utc": "1964-07-27T18:49:39Z", "ms": -171349821455.77533 }, "end": { "local": "1964-07-29T02:52:02+08:00", "utc": "1964-07-28T18:52:02Z", "ms": -171263277645.49197 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-07-28T02:49:39+08:00", "utc": "1964-07-27T18:49:39Z", "ms": -171349821455.77533 }, "end": { "local": "1964-07-29T02:52:02+08:00", "utc": "1964-07-28T18:52:02Z", "ms": -171263277645.49197 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-07-27", "window": { "start": { "local": "1964-07-27T21:54:52+08:00", "utc": "1964-07-27T13:54:52Z", "ms": -171367507519.9413 }, "end": { "local": "1964-07-27T21:54:52+08:00", "utc": "1964-07-27T13:54:52Z", "ms": -171367507519.9413 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-07-28", "window": { "start": { "local": "1964-07-28T22:26:11+08:00", "utc": "1964-07-28T14:26:11Z", "ms": -171279229495.1779 }, "end": { "local": "1964-07-28T22:26:11+08:00", "utc": "1964-07-28T14:26:11Z", "ms": -171279229495.1779 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:50 on Tue 28 Jul to 02:52 on Wed 29 Jul.", "fact": "1964-07-27T18:49:39Z → 1964-07-28T18:52:02Z" }, { "step": "kaala", "text": "Moonrise is at 21:55 on the 27th and 22:26 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15952 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Tuesday 28 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-07-28", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Tuesday 28 July. Caturthī runs from 02:50 on Tue 28 Jul to 02:52 on Wed 29 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-07-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-08-04", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33296, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-08-03T17:59:50+08:00", "utc": "1964-08-03T09:59:50Z", "ms": -170776810436.86404 }, "end": { "local": "1964-08-04T15:14:27+08:00", "utc": "1964-08-04T07:14:27Z", "ms": -170700333426.50775 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-03T17:59:50+08:00", "utc": "1964-08-03T09:59:50Z", "ms": -170776810436.86404 }, "end": { "local": "1964-08-04T15:14:27+08:00", "utc": "1964-08-04T07:14:27Z", "ms": -170700333426.50775 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-08-03", "window": { "start": { "local": "1964-08-03T05:58:44+08:00", "utc": "1964-08-02T21:58:44Z", "ms": -170820076499.5718 }, "end": { "local": "1964-08-03T05:58:44+08:00", "utc": "1964-08-02T21:58:44Z", "ms": -170820076499.5718 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-08-04", "window": { "start": { "local": "1964-08-04T05:59:30+08:00", "utc": "1964-08-03T21:59:30Z", "ms": -170733629709.44385 }, "end": { "local": "1964-08-04T05:59:30+08:00", "utc": "1964-08-03T21:59:30Z", "ms": -170733629709.44385 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:00 on Mon 3 Aug to 15:14 on Tue 4 Aug.", "fact": "1964-08-03T09:59:50Z → 1964-08-04T07:14:27Z" }, { "step": "kaala", "text": "Sunrise is at 05:59 on the 3rd and 06:00 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33296 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Qingyang, 1964: Tuesday 4 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-04", "confidence": "determinate" } ], "quote": "In Qingyang, Kāmikā Ekādaśī 1964 falls on Tuesday 4 August. Ekādaśī runs from 18:00 on Mon 3 Aug to 15:14 on Tue 4 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-08-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-08-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27194, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-08-05T12:16:39+08:00", "utc": "1964-08-05T04:16:39Z", "ms": -170624600607.7457 }, "end": { "local": "1964-08-06T09:12:43+08:00", "utc": "1964-08-06T01:12:43Z", "ms": -170549237304.22455 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-05T12:16:39+08:00", "utc": "1964-08-05T04:16:39Z", "ms": -170624600607.7457 }, "end": { "local": "1964-08-06T09:12:43+08:00", "utc": "1964-08-06T01:12:43Z", "ms": -170549237304.22455 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-08-05", "window": { "start": { "local": "1964-08-05T19:49:54+08:00", "utc": "1964-08-05T11:49:54Z", "ms": -170597406112.5739 }, "end": { "local": "1964-08-05T21:11:23+08:00", "utc": "1964-08-05T13:11:23Z", "ms": -170592516730.68506 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1964-08-06", "window": { "start": { "local": "1964-08-06T19:48:54+08:00", "utc": "1964-08-06T11:48:54Z", "ms": -170511065899.6221 }, "end": { "local": "1964-08-06T21:10:38+08:00", "utc": "1964-08-06T13:10:38Z", "ms": -170506162263.1992 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:17 on Wed 5 Aug to 09:13 on Thu 6 Aug.", "fact": "1964-08-05T04:16:39Z → 1964-08-06T01:12:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:50–21:11 on the 5th, 19:49–21:11 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 81 of 81 minutes on the 5th and 0 of 82 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27194 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Wednesday 5 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-05", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Wednesday 5 August. Trayodaśī runs from 12:17 on Wed 5 Aug to 09:13 on Thu 6 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-08-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-08-06", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17436, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-08-06T09:12:43+08:00", "utc": "1964-08-06T01:12:43Z", "ms": -170549237304.22455 }, "end": { "local": "1964-08-07T06:09:58+08:00", "utc": "1964-08-06T22:09:58Z", "ms": -170473801705.60184 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-06T09:12:43+08:00", "utc": "1964-08-06T01:12:43Z", "ms": -170549237304.22455 }, "end": { "local": "1964-08-07T06:09:58+08:00", "utc": "1964-08-06T22:09:58Z", "ms": -170473801705.60184 } }, "kaala": "nishita", "days": [ { "local_date": "1964-08-05", "window": { "start": { "local": "1964-08-06T00:31:29+08:00", "utc": "1964-08-05T16:31:29Z", "ms": -170580510930.4907 }, "end": { "local": "1964-08-06T01:19:29+08:00", "utc": "1964-08-05T17:19:29Z", "ms": -170577630930.4907 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-08-06", "window": { "start": { "local": "1964-08-07T00:31:23+08:00", "utc": "1964-08-06T16:31:23Z", "ms": -170494117263.0362 }, "end": { "local": "1964-08-07T01:19:23+08:00", "utc": "1964-08-06T17:19:23Z", "ms": -170491237263.0362 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:13 on Thu 6 Aug to 06:10 on Fri 7 Aug.", "fact": "1964-08-06T01:12:43Z → 1964-08-06T22:09:58Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:31–01:19 on the 5th, 00:31–01:19 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17436 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Thursday 6 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-06", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Thursday 6 August. Caturdaśī runs from 09:13 on Thu 6 Aug to 06:10 on Fri 7 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-08-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27783, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-08-09T22:33:51+08:00", "utc": "1964-08-09T14:33:51Z", "ms": -170241968964.1935 }, "end": { "local": "1964-08-10T21:01:31+08:00", "utc": "1964-08-10T13:01:31Z", "ms": -170161108908.8314 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-09T22:33:51+08:00", "utc": "1964-08-09T14:33:51Z", "ms": -170241968964.1935 }, "end": { "local": "1964-08-10T21:01:31+08:00", "utc": "1964-08-10T13:01:31Z", "ms": -170161108908.8314 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-09", "window": { "start": { "local": "1964-08-09T12:30:37+08:00", "utc": "1964-08-09T04:30:37Z", "ms": -170278163429.84113 }, "end": { "local": "1964-08-09T13:18:37+08:00", "utc": "1964-08-09T05:18:37Z", "ms": -170275283429.84113 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-08-10", "window": { "start": { "local": "1964-08-10T12:30:28+08:00", "utc": "1964-08-10T04:30:28Z", "ms": -170191772125.5965 }, "end": { "local": "1964-08-10T13:18:28+08:00", "utc": "1964-08-10T05:18:28Z", "ms": -170188892125.5965 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:34 on Sun 9 Aug to 21:02 on Mon 10 Aug.", "fact": "1964-08-09T14:33:51Z → 1964-08-10T13:01:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 9th, 12:30–13:18 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27783 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Qingyang, 1964: Monday 10 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-10", "confidence": "determinate" } ], "quote": "In Qingyang, Madhusravā Tṛtīyā (Hariyali Teej) 1964 falls on Monday 10 August. Tṛtīyā runs from 22:34 on Sun 9 Aug to 21:02 on Mon 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/madhusrava-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-08-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24796, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-08-10T21:01:31+08:00", "utc": "1964-08-10T13:01:31Z", "ms": -170161108908.8314 }, "end": { "local": "1964-08-11T20:11:35+08:00", "utc": "1964-08-11T12:11:35Z", "ms": -170077704926.10352 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-10T21:01:31+08:00", "utc": "1964-08-10T13:01:31Z", "ms": -170161108908.8314 }, "end": { "local": "1964-08-11T20:11:35+08:00", "utc": "1964-08-11T12:11:35Z", "ms": -170077704926.10352 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-10", "window": { "start": { "local": "1964-08-10T12:30:28+08:00", "utc": "1964-08-10T04:30:28Z", "ms": -170191772125.5965 }, "end": { "local": "1964-08-10T13:18:28+08:00", "utc": "1964-08-10T05:18:28Z", "ms": -170188892125.5965 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-08-11", "window": { "start": { "local": "1964-08-11T12:30:19+08:00", "utc": "1964-08-11T04:30:19Z", "ms": -170105381398.65936 }, "end": { "local": "1964-08-11T13:18:19+08:00", "utc": "1964-08-11T05:18:19Z", "ms": -170102501398.65936 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:02 on Mon 10 Aug to 20:12 on Tue 11 Aug.", "fact": "1964-08-10T13:01:31Z → 1964-08-11T12:11:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 10th, 12:30–13:18 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24796 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Tuesday 11 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-11", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Tuesday 11 August. Caturthī runs from 21:02 on Mon 10 Aug to 20:12 on Tue 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24618, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-08-11T20:11:35+08:00", "utc": "1964-08-11T12:11:35Z", "ms": -170077704926.10352 }, "end": { "local": "1964-08-12T20:08:27+08:00", "utc": "1964-08-12T12:08:27Z", "ms": -169991493214.20996 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-11T20:11:35+08:00", "utc": "1964-08-11T12:11:35Z", "ms": -170077704926.10352 }, "end": { "local": "1964-08-12T20:08:27+08:00", "utc": "1964-08-12T12:08:27Z", "ms": -169991493214.20996 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-11", "window": { "start": { "local": "1964-08-11T12:30:19+08:00", "utc": "1964-08-11T04:30:19Z", "ms": -170105381398.65936 }, "end": { "local": "1964-08-11T13:18:19+08:00", "utc": "1964-08-11T05:18:19Z", "ms": -170102501398.65936 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-08-12", "window": { "start": { "local": "1964-08-12T12:30:09+08:00", "utc": "1964-08-12T04:30:09Z", "ms": -170018991244.8275 }, "end": { "local": "1964-08-12T13:18:09+08:00", "utc": "1964-08-12T05:18:09Z", "ms": -170016111244.8275 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:12 on Tue 11 Aug to 20:08 on Wed 12 Aug.", "fact": "1964-08-11T12:11:35Z → 1964-08-12T12:08:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 11th, 12:30–13:18 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24618 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Qingyang, 1964: Wednesday 12 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-12", "confidence": "determinate" } ], "quote": "In Qingyang, Nāga Pañcamī 1964 falls on Wednesday 12 August. Pañcamī runs from 20:12 on Tue 11 Aug to 20:08 on Wed 12 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/naga-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-08-19", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2724, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-08-18T05:25:06+08:00", "utc": "1964-08-17T21:25:06Z", "ms": -169526094475.23767 }, "end": { "local": "1964-08-19T07:52:33+08:00", "utc": "1964-08-18T23:52:33Z", "ms": -169430847041.03113 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-18T05:25:06+08:00", "utc": "1964-08-17T21:25:06Z", "ms": -169526094475.23767 }, "end": { "local": "1964-08-19T07:52:33+08:00", "utc": "1964-08-18T23:52:33Z", "ms": -169430847041.03113 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-08-18", "window": { "start": { "local": "1964-08-18T06:10:30+08:00", "utc": "1964-08-17T22:10:30Z", "ms": -169523370249.47803 }, "end": { "local": "1964-08-18T06:10:30+08:00", "utc": "1964-08-17T22:10:30Z", "ms": -169523370249.47803 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-08-19", "window": { "start": { "local": "1964-08-19T06:11:17+08:00", "utc": "1964-08-18T22:11:17Z", "ms": -169436923471.25006 }, "end": { "local": "1964-08-19T06:11:17+08:00", "utc": "1964-08-18T22:11:17Z", "ms": -169436923471.25006 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:25 on Tue 18 Aug to 07:53 on Wed 19 Aug.", "fact": "1964-08-17T21:25:06Z → 1964-08-18T23:52:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 18th and 06:11 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both sunrises qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 2724 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Qingyang, 1964: Wednesday 19 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-19", "confidence": "determinate" } ], "quote": "In Qingyang, Putradā Ekādaśī 1964 falls on Wednesday 19 August. Ekādaśī runs from 05:25 on Tue 18 Aug to 07:53 on Wed 19 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-08-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8856, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-08-19T07:52:33+08:00", "utc": "1964-08-18T23:52:33Z", "ms": -169430847041.03113 }, "end": { "local": "1964-08-20T10:00:54+08:00", "utc": "1964-08-20T02:00:54Z", "ms": -169336745791.45453 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-19T07:52:33+08:00", "utc": "1964-08-18T23:52:33Z", "ms": -169430847041.03113 }, "end": { "local": "1964-08-20T10:00:54+08:00", "utc": "1964-08-20T02:00:54Z", "ms": -169336745791.45453 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-19", "window": { "start": { "local": "1964-08-19T12:28:44+08:00", "utc": "1964-08-19T04:28:44Z", "ms": -169414275565.70032 }, "end": { "local": "1964-08-19T13:16:44+08:00", "utc": "1964-08-19T05:16:44Z", "ms": -169411395565.70032 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-08-20", "window": { "start": { "local": "1964-08-20T12:28:30+08:00", "utc": "1964-08-20T04:28:30Z", "ms": -169327889684.2589 }, "end": { "local": "1964-08-20T13:16:30+08:00", "utc": "1964-08-20T05:16:30Z", "ms": -169325009684.2589 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 07:53 on Wed 19 Aug to 10:01 on Thu 20 Aug.", "fact": "1964-08-18T23:52:33Z → 1964-08-20T02:00:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 19th, 12:29–13:17 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8856 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Qingyang, 1964: Wednesday 19 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-19", "confidence": "determinate" } ], "quote": "In Qingyang, Dāmodara Dvādaśī 1964 falls on Wednesday 19 August. Dvādaśī runs from 07:53 on Wed 19 Aug to 10:01 on Thu 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/damodara-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-08-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28211, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-08-20T10:00:54+08:00", "utc": "1964-08-20T02:00:54Z", "ms": -169336745791.45453 }, "end": { "local": "1964-08-21T11:41:31+08:00", "utc": "1964-08-21T03:41:31Z", "ms": -169244309399.60367 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-20T10:00:54+08:00", "utc": "1964-08-20T02:00:54Z", "ms": -169336745791.45453 }, "end": { "local": "1964-08-21T11:41:31+08:00", "utc": "1964-08-21T03:41:31Z", "ms": -169244309399.60367 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-08-20", "window": { "start": { "local": "1964-08-20T19:32:57+08:00", "utc": "1964-08-20T11:32:57Z", "ms": -169302422584.96597 }, "end": { "local": "1964-08-20T20:58:16+08:00", "utc": "1964-08-20T12:58:16Z", "ms": -169297303598.7693 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "1964-08-21", "window": { "start": { "local": "1964-08-21T19:31:42+08:00", "utc": "1964-08-21T11:31:42Z", "ms": -169216098375.43167 }, "end": { "local": "1964-08-21T20:57:17+08:00", "utc": "1964-08-21T12:57:17Z", "ms": -169210963083.59048 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:01 on Thu 20 Aug to 11:42 on Fri 21 Aug.", "fact": "1964-08-20T02:00:54Z → 1964-08-21T03:41:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:33–20:58 on the 20th, 19:32–20:57 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 85 of 85 minutes on the 20th and 0 of 86 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28211 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Thursday 20 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-20", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Thursday 20 August. Trayodaśī runs from 10:01 on Thu 20 Aug to 11:42 on Fri 21 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-08-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 18175, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-08-22T12:49:49+08:00", "utc": "1964-08-22T04:49:49Z", "ms": -169153810602.52762 }, "end": { "local": "1964-08-23T13:24:56+08:00", "utc": "1964-08-23T05:24:56Z", "ms": -169065303878.87372 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1964-08-23T01:11:28+08:00", "utc": "1964-08-22T17:11:28Z", "ms": -169109311912.63864 }, "end": { "local": "1964-08-23T13:24:56+08:00", "utc": "1964-08-23T05:24:56Z", "ms": -169065303878.87372 } }, "kaala": "day", "days": [ { "local_date": "1964-08-22", "window": { "start": { "local": "1964-08-22T06:13:36+08:00", "utc": "1964-08-21T22:13:36Z", "ms": -169177583686.62277 }, "end": { "local": "1964-08-23T06:14:23+08:00", "utc": "1964-08-22T22:14:23Z", "ms": -169091137276.9591 } }, "covered_min": 303, "window_min": 1441, "qualifies": true }, { "local_date": "1964-08-23", "window": { "start": { "local": "1964-08-23T06:14:23+08:00", "utc": "1964-08-22T22:14:23Z", "ms": -169091137276.9591 }, "end": { "local": "1964-08-24T06:15:09+08:00", "utc": "1964-08-23T22:15:09Z", "ms": -169004690957.02188 } }, "covered_min": 431, "window_min": 1441, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:50 on Sat 22 Aug to 13:25 on Sun 23 Aug. Its second half begins at 01:11 on Sun 23 Aug.", "fact": "1964-08-22T04:49:49Z → 1964-08-23T05:24:56Z · second half from 1964-08-22T17:11:28Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:14 on the 22nd, and from 06:14 on the 23rd.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 303 of 1441 minutes on the 22nd and 431 of 1441 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 18175 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Qingyang, 1964: Sunday 23 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-23", "confidence": "boundary" } ], "quote": "In Qingyang, Rakṣā Bandhana (Rakhi) 1964 falls on Sunday 23 August. The second half of Pūrṇimā runs from 01:11 on Sun 23 Aug to 13:25 on Sun 23 Aug and falls on two days: 431 minutes of it on the 23rd, 303 on the 22nd; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/raksha-bandhana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 551, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-08-22T12:49:49+08:00", "utc": "1964-08-22T04:49:49Z", "ms": -169153810602.52762 }, "end": { "local": "1964-08-23T13:24:56+08:00", "utc": "1964-08-23T05:24:56Z", "ms": -169065303878.87372 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1964-08-22T12:49:49+08:00", "utc": "1964-08-22T04:49:49Z", "ms": -169153810602.52762 }, "end": { "local": "1964-08-23T13:24:56+08:00", "utc": "1964-08-23T05:24:56Z", "ms": -169065303878.87372 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-22", "window": { "start": { "local": "1964-08-22T12:28:01+08:00", "utc": "1964-08-22T04:28:01Z", "ms": -169155119343.55865 }, "end": { "local": "1964-08-22T13:16:01+08:00", "utc": "1964-08-22T05:16:01Z", "ms": -169152239343.55865 } }, "covered_min": 26, "window_min": 48, "qualifies": true }, { "local_date": "1964-08-23", "window": { "start": { "local": "1964-08-23T12:27:45+08:00", "utc": "1964-08-23T04:27:45Z", "ms": -169068734852.97644 }, "end": { "local": "1964-08-23T13:15:45+08:00", "utc": "1964-08-23T05:15:45Z", "ms": -169065854852.97644 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:50 on Sat 22 Aug to 13:25 on Sun 23 Aug.", "fact": "1964-08-22T04:49:49Z → 1964-08-23T05:24:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 22nd, 12:28–13:16 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 26 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 551 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Qingyang, 1964: Sunday 23 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "rishi-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-23", "confidence": "boundary" } ], "quote": "In Qingyang, Ṛṣi Tarpaṇa 1964 falls on Sunday 23 August. Pūrṇimā runs from 12:50 on Sat 22 Aug to 13:25 on Sun 23 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 26 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/rishi-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25169, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1964-08-24T13:28:38+08:00", "utc": "1964-08-24T05:28:38Z", "ms": -168978681584.4239 }, "end": { "local": "1964-08-25T13:04:22+08:00", "utc": "1964-08-25T05:04:22Z", "ms": -168893737980.9831 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-24T13:28:38+08:00", "utc": "1964-08-24T05:28:38Z", "ms": -168978681584.4239 }, "end": { "local": "1964-08-25T13:04:22+08:00", "utc": "1964-08-25T05:04:22Z", "ms": -168893737980.9831 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-08-24", "window": { "start": { "local": "1964-08-24T20:28:07+08:00", "utc": "1964-08-24T12:28:07Z", "ms": -168953512792.8286 }, "end": { "local": "1964-08-24T20:28:07+08:00", "utc": "1964-08-24T12:28:07Z", "ms": -168953512792.8286 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-08-25", "window": { "start": { "local": "1964-08-25T20:58:47+08:00", "utc": "1964-08-25T12:58:47Z", "ms": -168865272813.42465 }, "end": { "local": "1964-08-25T20:58:47+08:00", "utc": "1964-08-25T12:58:47Z", "ms": -168865272813.42465 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 13:29 on Mon 24 Aug to 13:04 on Tue 25 Aug.", "fact": "1964-08-24T05:28:38Z → 1964-08-25T05:04:22Z" }, { "step": "kaala", "text": "Moonrise is at 20:28 on the 24th and 20:59 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25169 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Qingyang, 1964: Monday 24 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunyasayana vrata (Dvitiya current at moonrise; if occurs on two successive days, it is to be observed on the second day)." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-24", "confidence": "determinate" } ], "quote": "In Qingyang, Aśūnya Śayana Vrata 1964 falls on Monday 24 August. Dvitīyā runs from 13:29 on Mon 24 Aug to 13:04 on Tue 25 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ashunya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 644, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-08-25T13:04:22+08:00", "utc": "1964-08-25T05:04:22Z", "ms": -168893737980.9831 }, "end": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-25T13:04:22+08:00", "utc": "1964-08-25T05:04:22Z", "ms": -168893737980.9831 }, "end": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-25", "window": { "start": { "local": "1964-08-25T12:27:13+08:00", "utc": "1964-08-25T04:27:13Z", "ms": -168895967147.32843 }, "end": { "local": "1964-08-25T13:15:13+08:00", "utc": "1964-08-25T05:15:13Z", "ms": -168893087147.32843 } }, "covered_min": 11, "window_min": 48, "qualifies": true }, { "local_date": "1964-08-26", "window": { "start": { "local": "1964-08-26T12:26:56+08:00", "utc": "1964-08-26T04:26:56Z", "ms": -168809583896.8521 }, "end": { "local": "1964-08-26T13:14:56+08:00", "utc": "1964-08-26T05:14:56Z", "ms": -168806703896.8521 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 13:04 on Tue 25 Aug to 12:16 on Wed 26 Aug.", "fact": "1964-08-25T05:04:22Z → 1964-08-26T04:16:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 25th, 12:27–13:15 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 11 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 644 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Qingyang, 1964: Tuesday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kajjali-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 3 Kajjali trtiya, (paraviddha), Angaveta trtiya (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-26", "confidence": "determinate" } ], "quote": "In Qingyang, Kajjalī Tṛtīyā (Kajari Teej) 1964 falls on Tuesday 25 August. Tṛtīyā runs from 13:04 on Tue 25 Aug to 12:16 on Wed 26 Aug and covers 11 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/kajjali-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16277, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 }, "end": { "local": "1964-08-27T11:08:09+08:00", "utc": "1964-08-27T03:08:09Z", "ms": -168727910953.86572 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 }, "end": { "local": "1964-08-27T11:08:09+08:00", "utc": "1964-08-27T03:08:09Z", "ms": -168727910953.86572 } }, "kaala": "sayahna", "days": [ { "local_date": "1964-08-26", "window": { "start": { "local": "1964-08-26T16:47:29+08:00", "utc": "1964-08-26T08:47:29Z", "ms": -168793951093.03885 }, "end": { "local": "1964-08-26T19:25:11+08:00", "utc": "1964-08-26T11:25:11Z", "ms": -168784489223.83 } }, "covered_min": 158, "window_min": 158, "qualifies": true }, { "local_date": "1964-08-27", "window": { "start": { "local": "1964-08-27T16:46:34+08:00", "utc": "1964-08-27T08:46:34Z", "ms": -168707606142.80026 }, "end": { "local": "1964-08-27T19:23:50+08:00", "utc": "1964-08-27T11:23:50Z", "ms": -168698169555.50912 } }, "covered_min": 0, "window_min": 157, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:16 on Wed 26 Aug to 11:08 on Thu 27 Aug.", "fact": "1964-08-26T04:16:12Z → 1964-08-27T03:08:09Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:47–19:25 on the 26th, 16:47–19:24 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 158 of 158 minutes on the 26th and 0 of 157 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16277 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Qingyang, 1964: Wednesday 26 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bahula-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day)." } ], "kaala": "sayahna", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-26", "confidence": "determinate" } ], "quote": "In Qingyang, Bahulā Caturthī 1964 falls on Wednesday 26 August. Caturthī runs from 12:16 on Wed 26 Aug to 11:08 on Thu 27 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/bahula-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-08-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33164, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 }, "end": { "local": "1964-08-27T11:08:09+08:00", "utc": "1964-08-27T03:08:09Z", "ms": -168727910953.86572 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-26T12:16:12+08:00", "utc": "1964-08-26T04:16:12Z", "ms": -168810227601.0676 }, "end": { "local": "1964-08-27T11:08:09+08:00", "utc": "1964-08-27T03:08:09Z", "ms": -168727910953.86572 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-08-26", "window": { "start": { "local": "1964-08-26T21:28:56+08:00", "utc": "1964-08-26T13:28:56Z", "ms": -168777063642.22086 }, "end": { "local": "1964-08-26T21:28:56+08:00", "utc": "1964-08-26T13:28:56Z", "ms": -168777063642.22086 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-08-27", "window": { "start": { "local": "1964-08-27T21:59:53+08:00", "utc": "1964-08-27T13:59:53Z", "ms": -168688807324.84335 }, "end": { "local": "1964-08-27T21:59:53+08:00", "utc": "1964-08-27T13:59:53Z", "ms": -168688807324.84335 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:16 on Wed 26 Aug to 11:08 on Thu 27 Aug.", "fact": "1964-08-26T04:16:12Z → 1964-08-27T03:08:09Z" }, { "step": "kaala", "text": "Moonrise is at 21:29 on the 26th and 22:00 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33164 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Wednesday 26 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-26", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Wednesday 26 August. Caturthī runs from 12:16 on Wed 26 Aug to 11:08 on Thu 27 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-08-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9766, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-08-28T09:43:35+08:00", "utc": "1964-08-28T01:43:35Z", "ms": -168646584554.84338 }, "end": { "local": "1964-08-29T08:05:06+08:00", "utc": "1964-08-29T00:05:06Z", "ms": -168566094212.05148 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-28T09:43:35+08:00", "utc": "1964-08-28T01:43:35Z", "ms": -168646584554.84338 }, "end": { "local": "1964-08-29T08:05:06+08:00", "utc": "1964-08-29T00:05:06Z", "ms": -168566094212.05148 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-28", "window": { "start": { "local": "1964-08-28T12:26:21+08:00", "utc": "1964-08-28T04:26:21Z", "ms": -168636818509.72034 }, "end": { "local": "1964-08-28T13:14:21+08:00", "utc": "1964-08-28T05:14:21Z", "ms": -168633938509.72034 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-08-29", "window": { "start": { "local": "1964-08-29T12:26:04+08:00", "utc": "1964-08-29T04:26:04Z", "ms": -168550436336.7509 }, "end": { "local": "1964-08-29T13:14:04+08:00", "utc": "1964-08-29T05:14:04Z", "ms": -168547556336.7509 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:44 on Fri 28 Aug to 08:05 on Sat 29 Aug.", "fact": "1964-08-28T01:43:35Z → 1964-08-29T00:05:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 28th, 12:26–13:14 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9766 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Qingyang, 1964: Friday 28 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-28", "confidence": "determinate" } ], "quote": "In Qingyang, Hala Ṣaṣṭhī 1964 falls on Friday 28 August. Ṣaṣṭhī runs from 09:44 on Fri 28 Aug to 08:05 on Sat 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/hala-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15658, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-08-29T08:05:06+08:00", "utc": "1964-08-29T00:05:06Z", "ms": -168566094212.05148 }, "end": { "local": "1964-08-30T06:14:28+08:00", "utc": "1964-08-29T22:14:28Z", "ms": -168486331866.9176 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-29T08:05:06+08:00", "utc": "1964-08-29T00:05:06Z", "ms": -168566094212.05148 }, "end": { "local": "1964-08-30T06:14:28+08:00", "utc": "1964-08-29T22:14:28Z", "ms": -168486331866.9176 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-08-29", "window": { "start": { "local": "1964-08-29T12:26:04+08:00", "utc": "1964-08-29T04:26:04Z", "ms": -168550436336.7509 }, "end": { "local": "1964-08-29T13:14:04+08:00", "utc": "1964-08-29T05:14:04Z", "ms": -168547556336.7509 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-08-30", "window": { "start": { "local": "1964-08-30T12:25:46+08:00", "utc": "1964-08-30T04:25:46Z", "ms": -168464054487.2325 }, "end": { "local": "1964-08-30T13:13:46+08:00", "utc": "1964-08-30T05:13:46Z", "ms": -168461174487.2325 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 08:05 on Sat 29 Aug to 06:14 on Sun 30 Aug.", "fact": "1964-08-29T00:05:06Z → 1964-08-29T22:14:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 29th, 12:26–13:14 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15658 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Qingyang, 1964: Saturday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-29", "confidence": "determinate" } ], "quote": "In Qingyang, Śītalā Saptamī 1964 falls on Saturday 29 August. Saptamī runs from 08:05 on Sat 29 Aug to 06:14 on Sun 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/shitala-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10733, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-08-30T06:14:28+08:00", "utc": "1964-08-29T22:14:28Z", "ms": -168486331866.9176 }, "end": { "local": "1964-08-31T04:13:02+08:00", "utc": "1964-08-30T20:13:02Z", "ms": -168407218122.07928 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-08-30T06:14:28+08:00", "utc": "1964-08-29T22:14:28Z", "ms": -168486331866.9176 }, "end": { "local": "1964-08-31T04:13:02+08:00", "utc": "1964-08-30T20:13:02Z", "ms": -168407218122.07928 } }, "kaala": "nishita", "days": [ { "local_date": "1964-08-29", "window": { "start": { "local": "1964-08-30T00:26:27+08:00", "utc": "1964-08-29T16:26:27Z", "ms": -168507213392.41904 }, "end": { "local": "1964-08-30T01:14:27+08:00", "utc": "1964-08-29T17:14:27Z", "ms": -168504333392.41904 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-08-30", "window": { "start": { "local": "1964-08-31T00:26:08+08:00", "utc": "1964-08-30T16:26:08Z", "ms": -168420831569.0412 }, "end": { "local": "1964-08-31T01:14:08+08:00", "utc": "1964-08-30T17:14:08Z", "ms": -168417951569.0412 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:14 on Sun 30 Aug to 04:13 on Mon 31 Aug.", "fact": "1964-08-29T22:14:28Z → 1964-08-30T20:13:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:26–01:14 on the 29th, 00:26–01:14 on the 30th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10733 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Qingyang, 1964: Sunday 30 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-08-30", "confidence": "determinate" } ], "quote": "In Qingyang, Janmāṣṭamī 1964 falls on Sunday 30 August. Aṣṭamī runs from 06:14 on Sun 30 Aug to 04:13 on Mon 31 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/janmashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-09-02", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23918, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-09-01T23:43:25+08:00", "utc": "1964-09-01T15:43:25Z", "ms": -168250594987.49677 }, "end": { "local": "1964-09-02T21:19:46+08:00", "utc": "1964-09-02T13:19:46Z", "ms": -168172814470.80075 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-01T23:43:25+08:00", "utc": "1964-09-01T15:43:25Z", "ms": -168250594987.49677 }, "end": { "local": "1964-09-02T21:19:46+08:00", "utc": "1964-09-02T13:19:46Z", "ms": -168172814470.80075 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-09-02", "window": { "start": { "local": "1964-09-02T06:22:03+08:00", "utc": "1964-09-01T22:22:03Z", "ms": -168226677281.04663 }, "end": { "local": "1964-09-02T06:22:03+08:00", "utc": "1964-09-01T22:22:03Z", "ms": -168226677281.04663 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-09-03", "window": { "start": { "local": "1964-09-03T06:22:48+08:00", "utc": "1964-09-02T22:22:48Z", "ms": -168140231581.04724 }, "end": { "local": "1964-09-03T06:22:48+08:00", "utc": "1964-09-02T22:22:48Z", "ms": -168140231581.04724 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:43 on Tue 1 Sep to 21:20 on Wed 2 Sep.", "fact": "1964-09-01T15:43:25Z → 1964-09-02T13:19:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:22 on the 2nd and 06:23 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23918 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Qingyang, 1964: Wednesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-02", "confidence": "determinate" } ], "quote": "In Qingyang, Ajā Ekādaśī 1964 falls on Wednesday 2 September. Ekādaśī runs from 23:43 on Tue 1 Sep to 21:20 on Wed 2 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-09-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-09-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1147, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-09-03T18:55:05+08:00", "utc": "1964-09-03T10:55:05Z", "ms": -168095095064.7875 }, "end": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-03T18:55:05+08:00", "utc": "1964-09-03T10:55:05Z", "ms": -168095095064.7875 }, "end": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-09-03", "window": { "start": { "local": "1964-09-03T19:14:12+08:00", "utc": "1964-09-03T11:14:12Z", "ms": -168093948414.56335 }, "end": { "local": "1964-09-03T20:43:27+08:00", "utc": "1964-09-03T12:43:27Z", "ms": -168088593415.60638 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1964-09-04", "window": { "start": { "local": "1964-09-04T19:12:47+08:00", "utc": "1964-09-04T11:12:47Z", "ms": -168007633134.65707 }, "end": { "local": "1964-09-04T20:42:19+08:00", "utc": "1964-09-04T12:42:19Z", "ms": -168002260757.18817 } }, "covered_min": 0, "window_min": 90, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:55 on Thu 3 Sep to 16:35 on Fri 4 Sep.", "fact": "1964-09-03T10:55:05Z → 1964-09-04T08:34:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:14–20:43 on the 3rd, 19:13–20:42 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 89 of 89 minutes on the 3rd and 0 of 90 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1147 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Thursday 3 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-03", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Thursday 3 September. Trayodaśī runs from 18:55 on Thu 3 Sep to 16:35 on Fri 4 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-09-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9485, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 }, "end": { "local": "1964-09-05T14:25:10+08:00", "utc": "1964-09-05T06:25:10Z", "ms": -167938489657.8083 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 }, "end": { "local": "1964-09-05T14:25:10+08:00", "utc": "1964-09-05T06:25:10Z", "ms": -167938489657.8083 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-09-04", "window": { "start": { "local": "1964-09-04T19:12:47+08:00", "utc": "1964-09-04T11:12:47Z", "ms": -168007633134.65707 }, "end": { "local": "1964-09-04T20:42:19+08:00", "utc": "1964-09-04T12:42:19Z", "ms": -168002260757.18817 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "1964-09-05", "window": { "start": { "local": "1964-09-05T19:11:22+08:00", "utc": "1964-09-05T11:11:22Z", "ms": -167921318282.70996 }, "end": { "local": "1964-09-05T20:41:12+08:00", "utc": "1964-09-05T12:41:12Z", "ms": -167915928474.7726 } }, "covered_min": 0, "window_min": 90, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:35 on Fri 4 Sep to 14:25 on Sat 5 Sep.", "fact": "1964-09-04T08:34:42Z → 1964-09-05T06:25:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:13–20:42 on the 4th, 19:11–20:41 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 90 of 90 minutes on the 4th and 0 of 90 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9485 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Qingyang, 1964: Friday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-04", "confidence": "determinate" } ], "quote": "In Qingyang, Aghora Caturdaśī 1964 falls on Friday 4 September. Caturdaśī runs from 16:35 on Fri 4 Sep to 14:25 on Sat 5 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/aghora-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-09-04", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28191, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 }, "end": { "local": "1964-09-05T14:25:10+08:00", "utc": "1964-09-05T06:25:10Z", "ms": -167938489657.8083 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-04T16:34:42+08:00", "utc": "1964-09-04T08:34:42Z", "ms": -168017117796.69968 }, "end": { "local": "1964-09-05T14:25:10+08:00", "utc": "1964-09-05T06:25:10Z", "ms": -167938489657.8083 } }, "kaala": "nishita", "days": [ { "local_date": "1964-09-04", "window": { "start": { "local": "1964-09-05T00:24:33+08:00", "utc": "1964-09-04T16:24:33Z", "ms": -167988926719.14865 }, "end": { "local": "1964-09-05T01:12:33+08:00", "utc": "1964-09-04T17:12:33Z", "ms": -167986046719.14865 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-05", "window": { "start": { "local": "1964-09-06T00:24:13+08:00", "utc": "1964-09-05T16:24:13Z", "ms": -167902546502.94495 }, "end": { "local": "1964-09-06T01:12:13+08:00", "utc": "1964-09-05T17:12:13Z", "ms": -167899666502.94495 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:35 on Fri 4 Sep to 14:25 on Sat 5 Sep.", "fact": "1964-09-04T08:34:42Z → 1964-09-05T06:25:10Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:25–01:13 on the 4th, 00:24–01:12 on the 5th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28191 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Friday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-04", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Friday 4 September. Caturdaśī runs from 16:35 on Fri 4 Sep to 14:25 on Sat 5 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-09-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 627, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-09-06T12:33:57+08:00", "utc": "1964-09-06T04:33:57Z", "ms": -167858762637.27783 }, "end": { "local": "1964-09-07T11:08:55+08:00", "utc": "1964-09-07T03:08:55Z", "ms": -167777465274.26672 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-06T12:33:57+08:00", "utc": "1964-09-06T04:33:57Z", "ms": -167858762637.27783 }, "end": { "local": "1964-09-07T11:08:55+08:00", "utc": "1964-09-07T03:08:55Z", "ms": -167777465274.26672 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-06", "window": { "start": { "local": "1964-09-06T12:23:31+08:00", "utc": "1964-09-06T04:23:31Z", "ms": -167859389278.5163 }, "end": { "local": "1964-09-06T13:11:31+08:00", "utc": "1964-09-06T05:11:31Z", "ms": -167856509278.5163 } }, "covered_min": 38, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-07", "window": { "start": { "local": "1964-09-07T12:23:11+08:00", "utc": "1964-09-07T04:23:11Z", "ms": -167773009470.9496 }, "end": { "local": "1964-09-07T13:11:11+08:00", "utc": "1964-09-07T05:11:11Z", "ms": -167770129470.9496 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 12:34 on Sun 6 Sep to 11:09 on Mon 7 Sep.", "fact": "1964-09-06T04:33:57Z → 1964-09-07T03:08:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 6th, 12:23–13:11 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 38 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 627 s" }, { "step": "ruling", "text": "Rudra Vrata, Qingyang, 1964: Sunday 6 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-06", "confidence": "determinate" } ], "quote": "In Qingyang, Rudra Vrata 1964 falls on Sunday 6 September. Pratipadā runs from 12:34 on Sun 6 Sep to 11:09 on Mon 7 Sep and covers 38 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rudra-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7518, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1964-09-08T10:17:32+08:00", "utc": "1964-09-08T02:17:32Z", "ms": -167694147740.74728 }, "end": { "local": "1964-09-09T10:05:59+08:00", "utc": "1964-09-09T02:05:59Z", "ms": -167608441441.6591 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-08T10:17:32+08:00", "utc": "1964-09-08T02:17:32Z", "ms": -167694147740.74728 }, "end": { "local": "1964-09-09T10:05:59+08:00", "utc": "1964-09-09T02:05:59Z", "ms": -167608441441.6591 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-08", "window": { "start": { "local": "1964-09-08T12:22:50+08:00", "utc": "1964-09-08T04:22:50Z", "ms": -167686629856.23816 }, "end": { "local": "1964-09-08T13:10:50+08:00", "utc": "1964-09-08T05:10:50Z", "ms": -167683749856.23816 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-09", "window": { "start": { "local": "1964-09-09T12:22:30+08:00", "utc": "1964-09-09T04:22:30Z", "ms": -167600250419.32135 }, "end": { "local": "1964-09-09T13:10:30+08:00", "utc": "1964-09-09T05:10:30Z", "ms": -167597370419.32135 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:18 on Tue 8 Sep to 10:06 on Wed 9 Sep.", "fact": "1964-09-08T02:17:32Z → 1964-09-09T02:05:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 8th, 12:22–13:10 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7518 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Qingyang, 1964: Tuesday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-08", "confidence": "determinate" } ], "quote": "In Qingyang, Haritālikā Vrata (Hartalika Teej) 1964 falls on Tuesday 8 September. Tṛtīyā runs from 10:18 on Tue 8 Sep to 10:06 on Wed 9 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/haritalika-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6260, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-09-09T10:05:59+08:00", "utc": "1964-09-09T02:05:59Z", "ms": -167608441441.6591 }, "end": { "local": "1964-09-10T10:37:49+08:00", "utc": "1964-09-10T02:37:49Z", "ms": -167520131287.84268 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-09T10:05:59+08:00", "utc": "1964-09-09T02:05:59Z", "ms": -167608441441.6591 }, "end": { "local": "1964-09-10T10:37:49+08:00", "utc": "1964-09-10T02:37:49Z", "ms": -167520131287.84268 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-09", "window": { "start": { "local": "1964-09-09T12:22:30+08:00", "utc": "1964-09-09T04:22:30Z", "ms": -167600250419.32135 }, "end": { "local": "1964-09-09T13:10:30+08:00", "utc": "1964-09-09T05:10:30Z", "ms": -167597370419.32135 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-10", "window": { "start": { "local": "1964-09-10T12:22:09+08:00", "utc": "1964-09-10T04:22:09Z", "ms": -167513871144.245 }, "end": { "local": "1964-09-10T13:10:09+08:00", "utc": "1964-09-10T05:10:09Z", "ms": -167510991144.245 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:06 on Wed 9 Sep to 10:38 on Thu 10 Sep.", "fact": "1964-09-09T02:05:59Z → 1964-09-10T02:37:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 9th, 12:22–13:10 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6260 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Qingyang, 1964: Wednesday 9 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-09", "confidence": "determinate" } ], "quote": "In Qingyang, Gaṇeśa Caturthī 1964 falls on Wednesday 9 September. Caturthī runs from 10:06 on Wed 9 Sep to 10:38 on Thu 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/ganesha-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1740, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-09-10T10:37:49+08:00", "utc": "1964-09-10T02:37:49Z", "ms": -167520131287.84268 }, "end": { "local": "1964-09-11T11:52:48+08:00", "utc": "1964-09-11T03:52:48Z", "ms": -167429231645.46402 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-10T10:37:49+08:00", "utc": "1964-09-10T02:37:49Z", "ms": -167520131287.84268 }, "end": { "local": "1964-09-11T11:52:48+08:00", "utc": "1964-09-11T03:52:48Z", "ms": -167429231645.46402 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-10", "window": { "start": { "local": "1964-09-10T12:22:09+08:00", "utc": "1964-09-10T04:22:09Z", "ms": -167513871144.245 }, "end": { "local": "1964-09-10T13:10:09+08:00", "utc": "1964-09-10T05:10:09Z", "ms": -167510991144.245 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-11", "window": { "start": { "local": "1964-09-11T12:21:48+08:00", "utc": "1964-09-11T04:21:48Z", "ms": -167427492014.1876 }, "end": { "local": "1964-09-11T13:09:48+08:00", "utc": "1964-09-11T05:09:48Z", "ms": -167424612014.1876 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 10:38 on Thu 10 Sep to 11:53 on Fri 11 Sep.", "fact": "1964-09-10T02:37:49Z → 1964-09-11T03:52:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 10th, 12:22–13:10 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 1740 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Qingyang, 1964: Thursday 10 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-10", "confidence": "boundary" } ], "quote": "In Qingyang, Ṛṣi Pañcamī 1964 falls on Thursday 10 September. Pañcamī runs from 10:38 on Thu 10 Sep to 11:53 on Fri 11 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/rishi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1740, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-09-11T11:52:48+08:00", "utc": "1964-09-11T03:52:48Z", "ms": -167429231645.46402 }, "end": { "local": "1964-09-12T13:45:54+08:00", "utc": "1964-09-12T05:45:54Z", "ms": -167336046178.74637 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-11T11:52:48+08:00", "utc": "1964-09-11T03:52:48Z", "ms": -167429231645.46402 }, "end": { "local": "1964-09-12T13:45:54+08:00", "utc": "1964-09-12T05:45:54Z", "ms": -167336046178.74637 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-11", "window": { "start": { "local": "1964-09-11T12:21:48+08:00", "utc": "1964-09-11T04:21:48Z", "ms": -167427492014.1876 }, "end": { "local": "1964-09-11T13:09:48+08:00", "utc": "1964-09-11T05:09:48Z", "ms": -167424612014.1876 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-12", "window": { "start": { "local": "1964-09-12T12:21:27+08:00", "utc": "1964-09-12T04:21:27Z", "ms": -167341113011.5038 }, "end": { "local": "1964-09-12T13:09:27+08:00", "utc": "1964-09-12T05:09:27Z", "ms": -167338233011.5038 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:53 on Fri 11 Sep to 13:46 on Sat 12 Sep.", "fact": "1964-09-11T03:52:48Z → 1964-09-12T05:45:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 11th, 12:21–13:09 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1740 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Qingyang, 1964: Saturday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-12", "confidence": "determinate" } ], "quote": "In Qingyang, Sūrya Ṣaṣṭhī (Bhādrapada) 1964 falls on Saturday 12 September. Ṣaṣṭhī runs from 11:53 on Fri 11 Sep to 13:46 on Sat 12 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/qingyang/festivals/1964/surya-shashthi-bhadrapada", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2187, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-09-12T13:45:54+08:00", "utc": "1964-09-12T05:45:54Z", "ms": -167336046178.74637 }, "end": { "local": "1964-09-13T16:06:57+08:00", "utc": "1964-09-13T08:06:57Z", "ms": -167241182940.1941 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-12T13:45:54+08:00", "utc": "1964-09-12T05:45:54Z", "ms": -167336046178.74637 }, "end": { "local": "1964-09-13T16:06:57+08:00", "utc": "1964-09-13T08:06:57Z", "ms": -167241182940.1941 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-12", "window": { "start": { "local": "1964-09-12T12:21:27+08:00", "utc": "1964-09-12T04:21:27Z", "ms": -167341113011.5038 }, "end": { "local": "1964-09-12T13:09:27+08:00", "utc": "1964-09-12T05:09:27Z", "ms": -167338233011.5038 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-09-13", "window": { "start": { "local": "1964-09-13T12:21:06+08:00", "utc": "1964-09-13T04:21:06Z", "ms": -167254734117.75616 }, "end": { "local": "1964-09-13T13:09:06+08:00", "utc": "1964-09-13T05:09:06Z", "ms": -167251854117.75616 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:46 on Sat 12 Sep to 16:07 on Sun 13 Sep.", "fact": "1964-09-12T05:45:54Z → 1964-09-13T08:06:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 12th, 12:21–13:09 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2187 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Qingyang, 1964: Sunday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-12", "confidence": "determinate" } ], "quote": "In Qingyang, Muktābharaṇa Vrata 1964 falls on Sunday 13 September. Saptamī runs from 13:46 on Sat 12 Sep to 16:07 on Sun 13 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/muktabharana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10671, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-09-13T16:06:57+08:00", "utc": "1964-09-13T08:06:57Z", "ms": -167241182940.1941 }, "end": { "local": "1964-09-14T18:41:40+08:00", "utc": "1964-09-14T10:41:40Z", "ms": -167145499548.68387 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-13T16:06:57+08:00", "utc": "1964-09-13T08:06:57Z", "ms": -167241182940.1941 }, "end": { "local": "1964-09-14T18:41:40+08:00", "utc": "1964-09-14T10:41:40Z", "ms": -167145499548.68387 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-13", "window": { "start": { "local": "1964-09-13T12:21:06+08:00", "utc": "1964-09-13T04:21:06Z", "ms": -167254734117.75616 }, "end": { "local": "1964-09-13T13:09:06+08:00", "utc": "1964-09-13T05:09:06Z", "ms": -167251854117.75616 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-09-14", "window": { "start": { "local": "1964-09-14T12:20:45+08:00", "utc": "1964-09-14T04:20:45Z", "ms": -167168355313.92017 }, "end": { "local": "1964-09-14T13:08:45+08:00", "utc": "1964-09-14T05:08:45Z", "ms": -167165475313.92017 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 16:07 on Sun 13 Sep to 18:42 on Mon 14 Sep.", "fact": "1964-09-13T08:06:57Z → 1964-09-14T10:41:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 13th, 12:21–13:09 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10671 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Qingyang, 1964: Monday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-14", "confidence": "determinate" } ], "quote": "In Qingyang, Rādhāṣṭamī 1964 falls on Monday 14 September. Aṣṭamī runs from 16:07 on Sun 13 Sep to 18:42 on Mon 14 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/radhashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-09-17", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19421, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-09-16T23:27:28+08:00", "utc": "1964-09-16T15:27:28Z", "ms": -166955551717.8412 }, "end": { "local": "1964-09-18T01:10:30+08:00", "utc": "1964-09-17T17:10:30Z", "ms": -166862969984.52756 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-16T23:27:28+08:00", "utc": "1964-09-16T15:27:28Z", "ms": -166955551717.8412 }, "end": { "local": "1964-09-18T01:10:30+08:00", "utc": "1964-09-17T17:10:30Z", "ms": -166862969984.52756 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-09-17", "window": { "start": { "local": "1964-09-17T06:33:25+08:00", "utc": "1964-09-16T22:33:25Z", "ms": -166929994538.6745 }, "end": { "local": "1964-09-17T06:33:25+08:00", "utc": "1964-09-16T22:33:25Z", "ms": -166929994538.6745 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-09-18", "window": { "start": { "local": "1964-09-18T06:34:11+08:00", "utc": "1964-09-17T22:34:11Z", "ms": -166843548965.76144 }, "end": { "local": "1964-09-18T06:34:11+08:00", "utc": "1964-09-17T22:34:11Z", "ms": -166843548965.76144 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:27 on Wed 16 Sep to 01:11 on Fri 18 Sep.", "fact": "1964-09-16T15:27:28Z → 1964-09-17T17:10:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 17th and 06:34 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19421 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Qingyang, 1964: Thursday 17 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-17", "confidence": "determinate" } ], "quote": "In Qingyang, Parivartanī Ekādaśī 1964 falls on Thursday 17 September. Ekādaśī runs from 23:27 on Wed 16 Sep to 01:11 on Fri 18 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-09-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36232, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-09-18T01:10:30+08:00", "utc": "1964-09-17T17:10:30Z", "ms": -166862969984.52756 }, "end": { "local": "1964-09-19T02:15:06+08:00", "utc": "1964-09-18T18:15:06Z", "ms": -166772694224.44427 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-18T01:10:30+08:00", "utc": "1964-09-17T17:10:30Z", "ms": -166862969984.52756 }, "end": { "local": "1964-09-19T02:15:06+08:00", "utc": "1964-09-18T18:15:06Z", "ms": -166772694224.44427 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-09-18", "window": { "start": { "local": "1964-09-18T12:19:19+08:00", "utc": "1964-09-18T04:19:19Z", "ms": -166822840595.6023 }, "end": { "local": "1964-09-18T13:07:19+08:00", "utc": "1964-09-18T05:07:19Z", "ms": -166819960595.6023 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-09-19", "window": { "start": { "local": "1964-09-19T12:18:58+08:00", "utc": "1964-09-19T04:18:58Z", "ms": -166736461934.61163 }, "end": { "local": "1964-09-19T13:06:58+08:00", "utc": "1964-09-19T05:06:58Z", "ms": -166733581934.61163 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:11 on Fri 18 Sep to 02:15 on Sat 19 Sep.", "fact": "1964-09-17T17:10:30Z → 1964-09-18T18:15:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 18th, 12:19–13:07 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36232 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Qingyang, 1964: Friday 18 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vamana-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-18", "confidence": "determinate" } ], "quote": "In Qingyang, Vāmana Jayantī 1964 falls on Friday 18 September. Dvādaśī runs from 01:11 on Fri 18 Sep to 02:15 on Sat 19 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vamana-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-09-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20938, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-09-19T02:15:06+08:00", "utc": "1964-09-18T18:15:06Z", "ms": -166772694224.44427 }, "end": { "local": "1964-09-20T02:38:30+08:00", "utc": "1964-09-19T18:38:30Z", "ms": -166684890178.15646 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-19T02:15:06+08:00", "utc": "1964-09-18T18:15:06Z", "ms": -166772694224.44427 }, "end": { "local": "1964-09-20T02:38:30+08:00", "utc": "1964-09-19T18:38:30Z", "ms": -166684890178.15646 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-09-18", "window": { "start": { "local": "1964-09-18T18:52:28+08:00", "utc": "1964-09-18T10:52:28Z", "ms": -166799252225.4431 }, "end": { "local": "1964-09-18T20:26:08+08:00", "utc": "1964-09-18T12:26:08Z", "ms": -166793632372.2931 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1964-09-19", "window": { "start": { "local": "1964-09-19T18:50:59+08:00", "utc": "1964-09-19T10:50:59Z", "ms": -166712940542.40543 }, "end": { "local": "1964-09-19T20:24:57+08:00", "utc": "1964-09-19T12:24:57Z", "ms": -166707302817.71924 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:15 on Sat 19 Sep to 02:38 on Sun 20 Sep.", "fact": "1964-09-18T18:15:06Z → 1964-09-19T18:38:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:26 on the 18th, 18:51–20:25 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 18th and 94 of 94 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20938 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Saturday 19 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-19", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Saturday 19 September. Trayodaśī runs from 02:15 on Sat 19 Sep to 02:38 on Sun 20 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-09-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14233, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-09-20T02:38:30+08:00", "utc": "1964-09-19T18:38:30Z", "ms": -166684890178.15646 }, "end": { "local": "1964-09-21T02:22:11+08:00", "utc": "1964-09-20T18:22:11Z", "ms": -166599468553.11676 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1964-09-20T02:38:30+08:00", "utc": "1964-09-19T18:38:30Z", "ms": -166684890178.15646 }, "end": { "local": "1964-09-21T02:22:11+08:00", "utc": "1964-09-20T18:22:11Z", "ms": -166599468553.11676 } }, "kaala": "udaya-3", "days": [ { "local_date": "1964-09-20", "window": { "start": { "local": "1964-09-20T06:35:42+08:00", "utc": "1964-09-19T22:35:42Z", "ms": -166670657607.259 }, "end": { "local": "1964-09-20T09:02:28+08:00", "utc": "1964-09-20T01:02:28Z", "ms": -166661851859.00714 } }, "covered_min": 147, "window_min": 147, "qualifies": true }, { "local_date": "1964-09-21", "window": { "start": { "local": "1964-09-21T06:36:28+08:00", "utc": "1964-09-20T22:36:28Z", "ms": -166584211791.45444 }, "end": { "local": "1964-09-21T09:02:47+08:00", "utc": "1964-09-21T01:02:47Z", "ms": -166575432866.20502 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:38 on Sun 20 Sep to 02:22 on Mon 21 Sep.", "fact": "1964-09-19T18:38:30Z → 1964-09-20T18:22:11Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:36–09:02 on the 20th, 06:36–09:03 on the 21st.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 147 of 147 minutes on the 20th and 0 of 146 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14233 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Qingyang, 1964: Sunday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-20", "confidence": "determinate" } ], "quote": "In Qingyang, Ananta Caturdaśī 1964 falls on Sunday 20 September. Caturdaśī runs from 02:38 on Sun 20 Sep to 02:22 on Mon 21 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/qingyang/festivals/1964/ananta-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-09-24", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-24", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 94, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-09-24T20:32:00+08:00", "utc": "1964-09-24T12:32:00Z", "ms": -166274879548.1052 }, "end": { "local": "1964-09-25T18:26:49+08:00", "utc": "1964-09-25T10:26:49Z", "ms": -166195991238.51154 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-09-24T20:32:00+08:00", "utc": "1964-09-24T12:32:00Z", "ms": -166274879548.1052 }, "end": { "local": "1964-09-25T18:26:49+08:00", "utc": "1964-09-25T10:26:49Z", "ms": -166195991238.51154 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-09-24", "window": { "start": { "local": "1964-09-24T20:33:34+08:00", "utc": "1964-09-24T12:33:34Z", "ms": -166274785944.33813 }, "end": { "local": "1964-09-24T20:33:34+08:00", "utc": "1964-09-24T12:33:34Z", "ms": -166274785944.33813 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-09-25", "window": { "start": { "local": "1964-09-25T21:09:43+08:00", "utc": "1964-09-25T13:09:43Z", "ms": -166186216891.44998 }, "end": { "local": "1964-09-25T21:09:43+08:00", "utc": "1964-09-25T13:09:43Z", "ms": -166186216891.44998 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:32 on Thu 24 Sep to 18:27 on Fri 25 Sep.", "fact": "1964-09-24T12:32:00Z → 1964-09-25T10:26:49Z" }, { "step": "kaala", "text": "Moonrise is at 20:34 on the 24th and 21:10 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 94 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Thursday 24 September.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-24", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-24", "confidence": "boundary" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Thursday 24 September. Caturthī runs from 20:32 on Thu 24 Sep to 18:27 on Fri 25 Sep and is current at moonrise that day. It is 1 min 34 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-09-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19965, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-09-26T16:18:02+08:00", "utc": "1964-09-26T08:18:02Z", "ms": -166117318451.2886 }, "end": { "local": "1964-09-27T14:09:18+08:00", "utc": "1964-09-27T06:09:18Z", "ms": -166038641958.2314 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-09-26T16:18:02+08:00", "utc": "1964-09-26T08:18:02Z", "ms": -166117318451.2886 }, "end": { "local": "1964-09-27T14:09:18+08:00", "utc": "1964-09-27T06:09:18Z", "ms": -166038641958.2314 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-09-26", "window": { "start": { "local": "1964-09-26T21:50:47+08:00", "utc": "1964-09-26T13:50:47Z", "ms": -166097353021.30057 }, "end": { "local": "1964-09-26T21:50:47+08:00", "utc": "1964-09-26T13:50:47Z", "ms": -166097353021.30057 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-09-27", "window": { "start": { "local": "1964-09-27T22:38:13+08:00", "utc": "1964-09-27T14:38:13Z", "ms": -166008107404.60678 }, "end": { "local": "1964-09-27T22:38:13+08:00", "utc": "1964-09-27T14:38:13Z", "ms": -166008107404.60678 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:18 on Sat 26 Sep to 14:09 on Sun 27 Sep.", "fact": "1964-09-26T08:18:02Z → 1964-09-27T06:09:18Z" }, { "step": "kaala", "text": "Moonrise is at 21:51 on the 26th and 22:38 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19965 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Qingyang, 1964: Saturday 26 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-26", "confidence": "determinate" } ], "quote": "In Qingyang, Candra Ṣaṣṭhī 1964 falls on Saturday 26 September. Ṣaṣṭhī runs from 16:18 on Sat 26 Sep to 14:09 on Sun 27 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/chandra-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23685, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-09-28T12:03:03+08:00", "utc": "1964-09-28T04:03:03Z", "ms": -165959816598.57272 }, "end": { "local": "1964-09-29T10:00:48+08:00", "utc": "1964-09-29T02:00:48Z", "ms": -165880751713.4866 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-09-28T12:03:03+08:00", "utc": "1964-09-28T04:03:03Z", "ms": -165959816598.57272 }, "end": { "local": "1964-09-29T10:00:48+08:00", "utc": "1964-09-29T02:00:48Z", "ms": -165880751713.4866 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-09-28", "window": { "start": { "local": "1964-09-28T18:37:48+08:00", "utc": "1964-09-28T10:37:48Z", "ms": -165936131963.08224 }, "end": { "local": "1964-09-28T20:14:27+08:00", "utc": "1964-09-28T12:14:27Z", "ms": -165930333000.87094 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "1964-09-29", "window": { "start": { "local": "1964-09-29T18:36:21+08:00", "utc": "1964-09-29T10:36:21Z", "ms": -165849818951.62366 }, "end": { "local": "1964-09-29T20:13:18+08:00", "utc": "1964-09-29T12:13:18Z", "ms": -165844002066.4067 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:03 on Mon 28 Sep to 10:01 on Tue 29 Sep.", "fact": "1964-09-28T04:03:03Z → 1964-09-29T02:00:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:38–20:14 on the 28th, 18:36–20:13 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 97 of 97 minutes on the 28th and 0 of 97 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23685 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Qingyang, 1964: Monday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-28", "confidence": "determinate" } ], "quote": "In Qingyang, Jitāṣṭamī (Jitiya) 1964 falls on Monday 28 September. Aṣṭamī runs from 12:03 on Mon 28 Sep to 10:01 on Tue 29 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/jitashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37683, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-09-28T12:03:03+08:00", "utc": "1964-09-28T04:03:03Z", "ms": -165959816598.57272 }, "end": { "local": "1964-09-29T10:00:48+08:00", "utc": "1964-09-29T02:00:48Z", "ms": -165880751713.4866 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-09-28T12:03:03+08:00", "utc": "1964-09-28T04:03:03Z", "ms": -165959816598.57272 }, "end": { "local": "1964-09-29T10:00:48+08:00", "utc": "1964-09-29T02:00:48Z", "ms": -165880751713.4866 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-09-27", "window": { "start": { "local": "1964-09-27T22:38:13+08:00", "utc": "1964-09-27T14:38:13Z", "ms": -166008107404.60678 }, "end": { "local": "1964-09-27T22:38:13+08:00", "utc": "1964-09-27T14:38:13Z", "ms": -166008107404.60678 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-09-28", "window": { "start": { "local": "1964-09-28T23:32:45+08:00", "utc": "1964-09-28T15:32:45Z", "ms": -165918434688.1651 }, "end": { "local": "1964-09-28T23:32:45+08:00", "utc": "1964-09-28T15:32:45Z", "ms": -165918434688.1651 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:03 on Mon 28 Sep to 10:01 on Tue 29 Sep.", "fact": "1964-09-28T04:03:03Z → 1964-09-29T02:00:48Z" }, { "step": "kaala", "text": "Moonrise is at 22:38 on the 27th and 23:33 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37683 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Qingyang, 1964: Monday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-09-28", "confidence": "determinate" } ], "quote": "In Qingyang, Mahālakṣmī Vrata Samāpana 1964 falls on Monday 28 September. Aṣṭamī runs from 12:03 on Mon 28 Sep to 10:01 on Tue 29 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/mahalakshmi-vrata-samapana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-10-01", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1883, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-10-01T06:12:52+08:00", "utc": "1964-09-30T22:12:52Z", "ms": -165721627974.38623 }, "end": { "local": "1964-10-02T04:30:25+08:00", "utc": "1964-10-01T20:30:25Z", "ms": -165641374832.32568 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-01T06:12:52+08:00", "utc": "1964-09-30T22:12:52Z", "ms": -165721627974.38623 }, "end": { "local": "1964-10-02T04:30:25+08:00", "utc": "1964-10-01T20:30:25Z", "ms": -165641374832.32568 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-10-01", "window": { "start": { "local": "1964-10-01T06:44:15+08:00", "utc": "1964-09-30T22:44:15Z", "ms": -165719744630.7365 }, "end": { "local": "1964-10-01T06:44:15+08:00", "utc": "1964-09-30T22:44:15Z", "ms": -165719744630.7365 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-10-02", "window": { "start": { "local": "1964-10-02T06:45:03+08:00", "utc": "1964-10-01T22:45:03Z", "ms": -165633296692.7922 }, "end": { "local": "1964-10-02T06:45:03+08:00", "utc": "1964-10-01T22:45:03Z", "ms": -165633296692.7922 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:13 on Thu 1 Oct to 04:30 on Fri 2 Oct.", "fact": "1964-09-30T22:12:52Z → 1964-10-01T20:30:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:44 on the 1st and 06:45 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1883 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Qingyang, 1964: Thursday 1 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-01", "confidence": "determinate" } ], "quote": "In Qingyang, Indirā Ekādaśī 1964 falls on Thursday 1 October. Ekādaśī runs from 06:13 on Thu 1 Oct to 04:30 on Fri 2 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-10-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-10-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20095, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-10-03T02:59:18+08:00", "utc": "1964-10-02T18:59:18Z", "ms": -165560441568.54733 }, "end": { "local": "1964-10-04T01:43:40+08:00", "utc": "1964-10-03T17:43:40Z", "ms": -165478580044.8134 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-03T02:59:18+08:00", "utc": "1964-10-02T18:59:18Z", "ms": -165560441568.54733 }, "end": { "local": "1964-10-04T01:43:40+08:00", "utc": "1964-10-03T17:43:40Z", "ms": -165478580044.8134 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-10-02", "window": { "start": { "local": "1964-10-02T18:32:02+08:00", "utc": "1964-10-02T10:32:02Z", "ms": -165590878007.30063 }, "end": { "local": "1964-10-02T20:09:53+08:00", "utc": "1964-10-02T12:09:53Z", "ms": -165585007405.1735 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1964-10-03", "window": { "start": { "local": "1964-10-03T18:30:36+08:00", "utc": "1964-10-03T10:30:36Z", "ms": -165504563629.48743 }, "end": { "local": "1964-10-03T20:08:45+08:00", "utc": "1964-10-03T12:08:45Z", "ms": -165498675148.2176 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:59 on Sat 3 Oct to 01:44 on Sun 4 Oct.", "fact": "1964-10-02T18:59:18Z → 1964-10-03T17:43:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:10 on the 2nd, 18:31–20:09 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 2nd and 98 of 98 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20095 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Saturday 3 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-03", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Saturday 3 October. Trayodaśī runs from 02:59 on Sat 3 Oct to 01:44 on Sun 4 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-10-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-10-04", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 825, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-10-04T01:43:40+08:00", "utc": "1964-10-03T17:43:40Z", "ms": -165478580044.8134 }, "end": { "local": "1964-10-05T00:48:35+08:00", "utc": "1964-10-04T16:48:35Z", "ms": -165395484839.88354 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-04T01:43:40+08:00", "utc": "1964-10-03T17:43:40Z", "ms": -165478580044.8134 }, "end": { "local": "1964-10-05T00:48:35+08:00", "utc": "1964-10-04T16:48:35Z", "ms": -165395484839.88354 } }, "kaala": "nishita", "days": [ { "local_date": "1964-10-03", "window": { "start": { "local": "1964-10-04T00:14:38+08:00", "utc": "1964-10-03T16:14:38Z", "ms": -165483921824.72552 }, "end": { "local": "1964-10-04T01:02:38+08:00", "utc": "1964-10-03T17:02:38Z", "ms": -165481041824.72552 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-10-04", "window": { "start": { "local": "1964-10-05T00:14:20+08:00", "utc": "1964-10-04T16:14:20Z", "ms": -165397540057.12476 }, "end": { "local": "1964-10-05T01:02:20+08:00", "utc": "1964-10-04T17:02:20Z", "ms": -165394660057.12476 } }, "covered_min": 34, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:44 on Sun 4 Oct to 00:49 on Mon 5 Oct.", "fact": "1964-10-03T17:43:40Z → 1964-10-04T16:48:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:15–01:03 on the 3rd, 00:14–01:02 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 3rd and 34 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 825 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Sunday 4 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-04", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Sunday 4 October. Caturdaśī runs from 01:44 on Sun 4 Oct to 00:49 on Mon 5 Oct and covers 34 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-10-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29516, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1964-10-05T00:48:35+08:00", "utc": "1964-10-04T16:48:35Z", "ms": -165395484839.88354 }, "end": { "local": "1964-10-06T00:19:39+08:00", "utc": "1964-10-05T16:19:39Z", "ms": -165310821134.89365 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-05T00:48:35+08:00", "utc": "1964-10-04T16:48:35Z", "ms": -165395484839.88354 }, "end": { "local": "1964-10-06T00:19:39+08:00", "utc": "1964-10-05T16:19:39Z", "ms": -165310821134.89365 } }, "kaala": "aparahna", "days": [ { "local_date": "1964-10-04", "window": { "start": { "local": "1964-10-04T13:48:11+08:00", "utc": "1964-10-04T05:48:11Z", "ms": -165435109312.81784 }, "end": { "local": "1964-10-04T16:08:41+08:00", "utc": "1964-10-04T08:08:41Z", "ms": -165426679077.10257 } }, "covered_min": 0, "window_min": 141, "qualifies": false }, { "local_date": "1964-10-05", "window": { "start": { "local": "1964-10-05T13:47:39+08:00", "utc": "1964-10-05T05:47:39Z", "ms": -165348740678.7498 }, "end": { "local": "1964-10-05T16:07:43+08:00", "utc": "1964-10-05T08:07:43Z", "ms": -165340337147.37897 } }, "covered_min": 140, "window_min": 140, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 00:49 on Mon 5 Oct to 00:20 on Tue 6 Oct.", "fact": "1964-10-04T16:48:35Z → 1964-10-05T16:19:39Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:48–16:09 on the 4th, 13:48–16:08 on the 5th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 141 minutes on the 4th and 140 of 140 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29516 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Qingyang, 1964: Monday 5 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-05", "confidence": "determinate" } ], "quote": "In Qingyang, Mahālaya Amāvāsyā 1964 falls on Monday 5 October. Amāvasyā runs from 00:49 on Mon 5 Oct to 00:20 on Tue 6 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/mahalaya-amavasya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40681, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-10-06T00:19:39+08:00", "utc": "1964-10-05T16:19:39Z", "ms": -165310821134.89365 }, "end": { "local": "1964-10-07T00:22:11+08:00", "utc": "1964-10-06T16:22:11Z", "ms": -165224269219.19415 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-06T00:19:39+08:00", "utc": "1964-10-05T16:19:39Z", "ms": -165310821134.89365 }, "end": { "local": "1964-10-07T00:22:11+08:00", "utc": "1964-10-06T16:22:11Z", "ms": -165224269219.19415 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-10-05", "window": { "start": { "local": "1964-10-05T12:13:38+08:00", "utc": "1964-10-05T04:13:38Z", "ms": -165354382444.43518 }, "end": { "local": "1964-10-05T13:01:38+08:00", "utc": "1964-10-05T05:01:38Z", "ms": -165351502444.43518 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-10-06", "window": { "start": { "local": "1964-10-06T12:13:20+08:00", "utc": "1964-10-06T04:13:20Z", "ms": -165268000085.47284 }, "end": { "local": "1964-10-06T13:01:20+08:00", "utc": "1964-10-06T05:01:20Z", "ms": -165265120085.47284 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 00:20 on Tue 6 Oct to 00:22 on Wed 7 Oct.", "fact": "1964-10-05T16:19:39Z → 1964-10-06T16:22:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:14–13:02 on the 5th, 12:13–13:01 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 40681 s" }, { "step": "ruling", "text": "Navarātrārambha, Qingyang, 1964: Tuesday 6 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-06", "confidence": "determinate" } ], "quote": "In Qingyang, Navarātrārambha (Navratri) 1964 falls on Tuesday 6 October. Pratipadā runs from 00:20 on Tue 6 Oct to 00:22 on Wed 7 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/navaratra-arambha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-10-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29175, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-10-09T02:15:32+08:00", "utc": "1964-10-08T18:15:32Z", "ms": -165044668444.77286 }, "end": { "local": "1964-10-10T04:05:58+08:00", "utc": "1964-10-09T20:05:58Z", "ms": -164951641562.8084 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-09T02:15:32+08:00", "utc": "1964-10-08T18:15:32Z", "ms": -165044668444.77286 }, "end": { "local": "1964-10-10T04:05:58+08:00", "utc": "1964-10-09T20:05:58Z", "ms": -164951641562.8084 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-10-09", "window": { "start": { "local": "1964-10-09T12:12:29+08:00", "utc": "1964-10-09T04:12:29Z", "ms": -165008850608.87524 }, "end": { "local": "1964-10-09T13:00:29+08:00", "utc": "1964-10-09T05:00:29Z", "ms": -165005970608.87524 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-10-10", "window": { "start": { "local": "1964-10-10T12:12:13+08:00", "utc": "1964-10-10T04:12:13Z", "ms": -164922466594.5417 }, "end": { "local": "1964-10-10T13:00:13+08:00", "utc": "1964-10-10T05:00:13Z", "ms": -164919586594.5417 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:16 on Fri 9 Oct to 04:06 on Sat 10 Oct.", "fact": "1964-10-08T18:15:32Z → 1964-10-09T20:05:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 9th, 12:12–13:00 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29175 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Friday 9 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-09", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Friday 9 October. Caturthī runs from 02:16 on Fri 9 Oct to 04:06 on Sat 10 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-10-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4961, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-10-12T09:01:38+08:00", "utc": "1964-10-12T01:01:38Z", "ms": -164761101659.37 }, "end": { "local": "1964-10-13T11:40:53+08:00", "utc": "1964-10-13T03:40:53Z", "ms": -164665146866.38617 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-12T09:01:38+08:00", "utc": "1964-10-12T01:01:38Z", "ms": -164761101659.37 }, "end": { "local": "1964-10-13T11:40:53+08:00", "utc": "1964-10-13T03:40:53Z", "ms": -164665146866.38617 } }, "kaala": "udaya-1", "days": [ { "local_date": "1964-10-12", "window": { "start": { "local": "1964-10-12T06:53:18+08:00", "utc": "1964-10-11T22:53:18Z", "ms": -164768801901.33298 }, "end": { "local": "1964-10-12T07:38:57+08:00", "utc": "1964-10-11T23:38:57Z", "ms": -164766062605.1289 } }, "covered_min": 0, "window_min": 46, "qualifies": false }, { "local_date": "1964-10-13", "window": { "start": { "local": "1964-10-13T06:54:09+08:00", "utc": "1964-10-12T22:54:09Z", "ms": -164682350770.5904 }, "end": { "local": "1964-10-13T07:39:40+08:00", "utc": "1964-10-12T23:39:40Z", "ms": -164679620233.7436 } }, "covered_min": 46, "window_min": 46, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:02 on Mon 12 Oct to 11:41 on Tue 13 Oct.", "fact": "1964-10-12T01:01:38Z → 1964-10-13T03:40:53Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:53–07:39 on the 12th, 06:54–07:40 on the 13th.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 46 minutes on the 12th and 46 of 46 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4961 s" }, { "step": "ruling", "text": "Durgā Saptamī, Qingyang, 1964: Tuesday 13 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-13", "confidence": "determinate" } ], "quote": "In Qingyang, Durgā Saptamī 1964 falls on Tuesday 13 October. Saptamī runs from 09:02 on Mon 12 Oct to 11:41 on Tue 13 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/qingyang/festivals/1964/durga-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1835, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-10-13T11:40:53+08:00", "utc": "1964-10-13T03:40:53Z", "ms": -164665146866.38617 }, "end": { "local": "1964-10-14T14:06:33+08:00", "utc": "1964-10-14T06:06:33Z", "ms": -164570006624.1395 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-13T11:40:53+08:00", "utc": "1964-10-13T03:40:53Z", "ms": -164665146866.38617 }, "end": { "local": "1964-10-14T14:06:33+08:00", "utc": "1964-10-14T06:06:33Z", "ms": -164570006624.1395 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-10-13", "window": { "start": { "local": "1964-10-13T12:11:28+08:00", "utc": "1964-10-13T04:11:28Z", "ms": -164663311744.23932 }, "end": { "local": "1964-10-13T12:59:28+08:00", "utc": "1964-10-13T04:59:28Z", "ms": -164660431744.23932 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-10-14", "window": { "start": { "local": "1964-10-14T12:11:14+08:00", "utc": "1964-10-14T04:11:14Z", "ms": -164576925799.43805 }, "end": { "local": "1964-10-14T12:59:14+08:00", "utc": "1964-10-14T04:59:14Z", "ms": -164574045799.43805 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 11:41 on Tue 13 Oct to 14:07 on Wed 14 Oct.", "fact": "1964-10-13T03:40:53Z → 1964-10-14T06:06:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 13th, 12:11–12:59 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1835 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Qingyang, 1964: Wednesday 14 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Mahastami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-14", "confidence": "determinate" } ], "quote": "In Qingyang, Mahāṣṭamī (Durga Ashtami) 1964 falls on Wednesday 14 October. Aṣṭamī runs from 11:41 on Tue 13 Oct to 14:07 on Wed 14 Oct and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/qingyang/festivals/1964/mahashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6560, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1964-10-15T16:03:39+08:00", "utc": "1964-10-15T08:03:39Z", "ms": -164476580602.1815 }, "end": { "local": "1964-10-16T17:20:50+08:00", "utc": "1964-10-16T09:20:50Z", "ms": -164385549555.10092 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1964-10-15T16:03:39+08:00", "utc": "1964-10-15T08:03:39Z", "ms": -164476580602.1815 }, "end": { "local": "1964-10-16T05:07:24+08:00", "utc": "1964-10-15T21:07:24Z", "ms": -164429555624.76468 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1964-10-15T02:56:57+08:00", "utc": "1964-10-14T18:56:57Z", "ms": -164523783082.8874 }, "end": { "local": "1964-10-16T05:07:24+08:00", "utc": "1964-10-15T21:07:24Z", "ms": -164429555624.76468 } } }, "kaala": "daytime", "days": [ { "local_date": "1964-10-15", "window": { "start": { "local": "1964-10-15T06:55:52+08:00", "utc": "1964-10-14T22:55:52Z", "ms": -164509447546.74234 }, "end": { "local": "1964-10-15T18:14:09+08:00", "utc": "1964-10-15T10:14:09Z", "ms": -164468751107.91296 } }, "covered_min": 130, "window_min": 678, "qualifies": true }, { "local_date": "1964-10-16", "window": { "start": { "local": "1964-10-16T06:56:45+08:00", "utc": "1964-10-15T22:56:45Z", "ms": -164422995444.495 }, "end": { "local": "1964-10-16T18:12:51+08:00", "utc": "1964-10-16T10:12:51Z", "ms": -164382429174.74405 } }, "covered_min": 0, "window_min": 676, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 16:04 on Thu 15 Oct to 17:21 on Fri 16 Oct, and Śravaṇa from 02:57 on Thu 15 Oct to 05:07 on Fri 16 Oct. They are together from 16:04 on Thu 15 Oct to 05:07 on Fri 16 Oct.", "fact": "1964-10-15T08:03:39Z → 1964-10-15T21:07:24Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:56–18:14 on the 15th, 06:57–18:13 on the 16th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 130 of 678 minutes on the 15th and 0 of 676 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6560 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Qingyang, 1964: Thursday 15 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-15", "confidence": "determinate" } ], "quote": "In Qingyang, Vijayā Daśamī (Dussehra) 1964 falls on Thursday 15 October. Daśamī runs from 16:04 on Thu 15 Oct to 17:21 on Fri 16 Oct and is with Śravaṇa in the day time that day, for 130 minutes.", "cite": "https://ahargana.org/qingyang/festivals/1964/vijaya-dashami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4039, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1964-10-14T14:06:33+08:00", "utc": "1964-10-14T06:06:33Z", "ms": -164570006624.1395 }, "end": { "local": "1964-10-15T16:03:39+08:00", "utc": "1964-10-15T08:03:39Z", "ms": -164476580602.1815 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-14T14:06:33+08:00", "utc": "1964-10-14T06:06:33Z", "ms": -164570006624.1395 }, "end": { "local": "1964-10-15T16:03:39+08:00", "utc": "1964-10-15T08:03:39Z", "ms": -164476580602.1815 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-10-14", "window": { "start": { "local": "1964-10-14T12:11:14+08:00", "utc": "1964-10-14T04:11:14Z", "ms": -164576925799.43805 }, "end": { "local": "1964-10-14T12:59:14+08:00", "utc": "1964-10-14T04:59:14Z", "ms": -164574045799.43805 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-10-15", "window": { "start": { "local": "1964-10-15T12:11:01+08:00", "utc": "1964-10-15T04:11:01Z", "ms": -164490539327.32764 }, "end": { "local": "1964-10-15T12:59:01+08:00", "utc": "1964-10-15T04:59:01Z", "ms": -164487659327.32764 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 14:07 on Wed 14 Oct to 16:04 on Thu 15 Oct.", "fact": "1964-10-14T06:06:33Z → 1964-10-15T08:03:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 14th, 12:11–12:59 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4039 s" }, { "step": "ruling", "text": "Mahānavamī, Qingyang, 1964: Thursday 15 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahanavami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise)." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-15", "confidence": "determinate" } ], "quote": "In Qingyang, Mahānavamī 1964 falls on Thursday 15 October. Navamī runs from 14:07 on Wed 14 Oct to 16:04 on Thu 15 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/mahanavami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-10-17", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37446, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-10-16T17:20:50+08:00", "utc": "1964-10-16T09:20:50Z", "ms": -164385549555.10092 }, "end": { "local": "1964-10-17T17:51:45+08:00", "utc": "1964-10-17T09:51:45Z", "ms": -164297294872.18695 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-16T17:20:50+08:00", "utc": "1964-10-16T09:20:50Z", "ms": -164385549555.10092 }, "end": { "local": "1964-10-17T17:51:45+08:00", "utc": "1964-10-17T09:51:45Z", "ms": -164297294872.18695 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-10-16", "window": { "start": { "local": "1964-10-16T06:56:45+08:00", "utc": "1964-10-15T22:56:45Z", "ms": -164422995444.495 }, "end": { "local": "1964-10-16T06:56:45+08:00", "utc": "1964-10-15T22:56:45Z", "ms": -164422995444.495 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-10-17", "window": { "start": { "local": "1964-10-17T06:57:37+08:00", "utc": "1964-10-16T22:57:37Z", "ms": -164336543009.22635 }, "end": { "local": "1964-10-17T06:57:37+08:00", "utc": "1964-10-16T22:57:37Z", "ms": -164336543009.22635 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:21 on Fri 16 Oct to 17:52 on Sat 17 Oct.", "fact": "1964-10-16T09:20:50Z → 1964-10-17T09:51:45Z" }, { "step": "kaala", "text": "Sunrise is at 06:57 on the 16th and 06:58 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37446 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Qingyang, 1964: Saturday 17 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-17", "confidence": "determinate" } ], "quote": "In Qingyang, Pāśāṅkuśā Ekādaśī 1964 falls on Saturday 17 October. Ekādaśī runs from 17:21 on Fri 16 Oct to 17:52 on Sat 17 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-10-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-10-18", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2109, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-10-18T17:35:08+08:00", "utc": "1964-10-18T09:35:08Z", "ms": -164211891604.39056 }, "end": { "local": "1964-10-19T16:34:04+08:00", "utc": "1964-10-19T08:34:04Z", "ms": -164129156099.07504 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1964-10-18T17:35:08+08:00", "utc": "1964-10-18T09:35:08Z", "ms": -164211891604.39056 }, "end": { "local": "1964-10-19T16:34:04+08:00", "utc": "1964-10-19T08:34:04Z", "ms": -164129156099.07504 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-10-18", "window": { "start": { "local": "1964-10-18T18:10:17+08:00", "utc": "1964-10-18T10:10:17Z", "ms": -164209782889.54645 }, "end": { "local": "1964-10-18T19:52:50+08:00", "utc": "1964-10-18T11:52:50Z", "ms": -164203630120.28143 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "1964-10-19", "window": { "start": { "local": "1964-10-19T18:09:02+08:00", "utc": "1964-10-19T10:09:02Z", "ms": -164123458471.0771 }, "end": { "local": "1964-10-19T19:51:52+08:00", "utc": "1964-10-19T11:51:52Z", "ms": -164117288495.6603 } }, "covered_min": 0, "window_min": 103, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:35 on Sun 18 Oct to 16:34 on Mon 19 Oct.", "fact": "1964-10-18T09:35:08Z → 1964-10-19T08:34:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:53 on the 18th, 18:09–19:52 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 103 of 103 minutes on the 18th and 0 of 103 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2109 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Sunday 18 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-18", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Sunday 18 October. Trayodaśī runs from 17:35 on Sun 18 Oct to 16:34 on Mon 19 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-10-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19486, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-10-24T04:42:23+08:00", "utc": "1964-10-23T20:42:23Z", "ms": -163739856913.38086 }, "end": { "local": "1964-10-25T01:57:28+08:00", "utc": "1964-10-24T17:57:28Z", "ms": -163663351913.66547 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-10-24T04:42:23+08:00", "utc": "1964-10-23T20:42:23Z", "ms": -163739856913.38086 }, "end": { "local": "1964-10-25T01:57:28+08:00", "utc": "1964-10-24T17:57:28Z", "ms": -163663351913.66547 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-10-23", "window": { "start": { "local": "1964-10-23T19:46:23+08:00", "utc": "1964-10-23T11:46:23Z", "ms": -163772017196.7921 }, "end": { "local": "1964-10-23T19:46:23+08:00", "utc": "1964-10-23T11:46:23Z", "ms": -163772017196.7921 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-10-24", "window": { "start": { "local": "1964-10-24T20:32:42+08:00", "utc": "1964-10-24T12:32:42Z", "ms": -163682838225.0189 }, "end": { "local": "1964-10-24T20:32:42+08:00", "utc": "1964-10-24T12:32:42Z", "ms": -163682838225.0189 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:42 on Sat 24 Oct to 01:57 on Sun 25 Oct.", "fact": "1964-10-23T20:42:23Z → 1964-10-24T17:57:28Z" }, { "step": "kaala", "text": "Moonrise is at 19:46 on the 23rd and 20:33 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19486 s" }, { "step": "ruling", "text": "Karaka Caturthī, Qingyang, 1964: Saturday 24 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-24", "confidence": "determinate" } ], "quote": "In Qingyang, Karaka Caturthī (Karwa Chauth) 1964 falls on Saturday 24 October. Caturthī runs from 04:42 on Sat 24 Oct to 01:57 on Sun 25 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/karaka-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-10-24", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19486, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-10-24T04:42:23+08:00", "utc": "1964-10-23T20:42:23Z", "ms": -163739856913.38086 }, "end": { "local": "1964-10-25T01:57:28+08:00", "utc": "1964-10-24T17:57:28Z", "ms": -163663351913.66547 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-10-24T04:42:23+08:00", "utc": "1964-10-23T20:42:23Z", "ms": -163739856913.38086 }, "end": { "local": "1964-10-25T01:57:28+08:00", "utc": "1964-10-24T17:57:28Z", "ms": -163663351913.66547 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-10-23", "window": { "start": { "local": "1964-10-23T19:46:23+08:00", "utc": "1964-10-23T11:46:23Z", "ms": -163772017196.7921 }, "end": { "local": "1964-10-23T19:46:23+08:00", "utc": "1964-10-23T11:46:23Z", "ms": -163772017196.7921 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-10-24", "window": { "start": { "local": "1964-10-24T20:32:42+08:00", "utc": "1964-10-24T12:32:42Z", "ms": -163682838225.0189 }, "end": { "local": "1964-10-24T20:32:42+08:00", "utc": "1964-10-24T12:32:42Z", "ms": -163682838225.0189 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:42 on Sat 24 Oct to 01:57 on Sun 25 Oct.", "fact": "1964-10-23T20:42:23Z → 1964-10-24T17:57:28Z" }, { "step": "kaala", "text": "Moonrise is at 19:46 on the 23rd and 20:33 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19486 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Saturday 24 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-24", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Saturday 24 October. Caturthī runs from 04:42 on Sat 24 Oct to 01:57 on Sun 25 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-10-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16657, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-10-27T18:54:07+08:00", "utc": "1964-10-27T10:54:07Z", "ms": -163429553384.64316 }, "end": { "local": "1964-10-28T17:07:53+08:00", "utc": "1964-10-28T09:07:53Z", "ms": -163349526559.5306 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-10-27T18:54:07+08:00", "utc": "1964-10-27T10:54:07Z", "ms": -163429553384.64316 }, "end": { "local": "1964-10-28T17:07:53+08:00", "utc": "1964-10-28T09:07:53Z", "ms": -163349526559.5306 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-10-27", "window": { "start": { "local": "1964-10-27T23:31:44+08:00", "utc": "1964-10-27T15:31:44Z", "ms": -163412896490.18658 }, "end": { "local": "1964-10-27T23:31:44+08:00", "utc": "1964-10-27T15:31:44Z", "ms": -163412896490.18658 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-10-28", "window": { "start": { "local": "1964-10-29T00:38:54+08:00", "utc": "1964-10-28T16:38:54Z", "ms": -163322465774.5836 }, "end": { "local": "1964-10-29T00:38:54+08:00", "utc": "1964-10-28T16:38:54Z", "ms": -163322465774.5836 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:54 on Tue 27 Oct to 17:08 on Wed 28 Oct.", "fact": "1964-10-27T10:54:07Z → 1964-10-28T09:07:53Z" }, { "step": "kaala", "text": "Moonrise is at 23:32 on the 27th and 00:39 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16657 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Qingyang, 1964: Tuesday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-27", "confidence": "determinate" } ], "quote": "In Qingyang, Ahoyī Aṣṭamī 1964 falls on Tuesday 27 October. Aṣṭamī runs from 18:54 on Tue 27 Oct to 17:08 on Wed 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ahoyi-ashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-10-31", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24261, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-10-30T14:37:20+08:00", "utc": "1964-10-30T06:37:20Z", "ms": -163185759587.84283 }, "end": { "local": "1964-10-31T13:54:50+08:00", "utc": "1964-10-31T05:54:50Z", "ms": -163101910328.94 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-10-30T14:37:20+08:00", "utc": "1964-10-30T06:37:20Z", "ms": -163185759587.84283 }, "end": { "local": "1964-10-31T13:54:50+08:00", "utc": "1964-10-31T05:54:50Z", "ms": -163101910328.94 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-10-30", "window": { "start": { "local": "1964-10-30T07:09:31+08:00", "utc": "1964-10-29T23:09:31Z", "ms": -163212628945.03772 }, "end": { "local": "1964-10-30T07:09:31+08:00", "utc": "1964-10-29T23:09:31Z", "ms": -163212628945.03772 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-10-31", "window": { "start": { "local": "1964-10-31T07:10:28+08:00", "utc": "1964-10-30T23:10:28Z", "ms": -163126171502.4153 }, "end": { "local": "1964-10-31T07:10:28+08:00", "utc": "1964-10-30T23:10:28Z", "ms": -163126171502.4153 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:37 on Fri 30 Oct to 13:55 on Sat 31 Oct.", "fact": "1964-10-30T06:37:20Z → 1964-10-31T05:54:50Z" }, { "step": "kaala", "text": "Sunrise is at 07:10 on the 30th and 07:10 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24261 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Qingyang, 1964: Saturday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-31", "confidence": "determinate" } ], "quote": "In Qingyang, Ramā Ekādaśī 1964 falls on Saturday 31 October. Ekādaśī runs from 14:37 on Fri 30 Oct to 13:55 on Sat 31 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-10-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14424, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-10-31T13:54:50+08:00", "utc": "1964-10-31T05:54:50Z", "ms": -163101910328.94 }, "end": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-10-31T13:54:50+08:00", "utc": "1964-10-31T05:54:50Z", "ms": -163101910328.94 }, "end": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-10-31", "window": { "start": { "local": "1964-10-31T17:55:14+08:00", "utc": "1964-10-31T09:55:14Z", "ms": -163087485833.82364 }, "end": { "local": "1964-10-31T19:41:24+08:00", "utc": "1964-10-31T11:41:24Z", "ms": -163081116220.97388 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1964-11-01", "window": { "start": { "local": "1964-11-01T17:54:13+08:00", "utc": "1964-11-01T09:54:13Z", "ms": -163001147138.51248 }, "end": { "local": "1964-11-01T19:40:38+08:00", "utc": "1964-11-01T11:40:38Z", "ms": -162994761608.8482 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:55 on Sat 31 Oct to 13:36 on Sun 1 Nov.", "fact": "1964-10-31T05:54:50Z → 1964-11-01T05:35:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:55–19:41 on the 31st, 17:54–19:41 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 31st and 0 of 106 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14424 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Qingyang, 1964: Saturday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-10-31", "confidence": "determinate" } ], "quote": "In Qingyang, Govatsa Dvādaśī (Vasu Baras) 1964 falls on Saturday 31 October. Dvādaśī runs from 13:55 on Sat 31 Oct to 13:36 on Sun 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/govatsa-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15091, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 }, "end": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 }, "end": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-01", "window": { "start": { "local": "1964-11-01T17:54:13+08:00", "utc": "1964-11-01T09:54:13Z", "ms": -163001147138.51248 }, "end": { "local": "1964-11-01T19:40:38+08:00", "utc": "1964-11-01T11:40:38Z", "ms": -162994761608.8482 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1964-11-02", "window": { "start": { "local": "1964-11-02T17:53:13+08:00", "utc": "1964-11-02T09:53:13Z", "ms": -162914807122.34595 }, "end": { "local": "1964-11-02T19:39:54+08:00", "utc": "1964-11-02T11:39:54Z", "ms": -162908405813.46942 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:36 on Sun 1 Nov to 13:42 on Mon 2 Nov.", "fact": "1964-11-01T05:35:43Z → 1964-11-02T05:41:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:41 on the 1st, 17:53–19:40 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 1st and 0 of 107 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15091 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Qingyang, 1964: Sunday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-01", "confidence": "determinate" } ], "quote": "In Qingyang, Yama Dīpadāna 1964 falls on Sunday 1 November. Trayodaśī runs from 13:36 on Sun 1 Nov to 13:42 on Mon 2 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/yama-dipadana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-11-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15091, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 }, "end": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-01T13:35:43+08:00", "utc": "1964-11-01T05:35:43Z", "ms": -163016656565.84055 }, "end": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-01", "window": { "start": { "local": "1964-11-01T17:54:13+08:00", "utc": "1964-11-01T09:54:13Z", "ms": -163001147138.51248 }, "end": { "local": "1964-11-01T19:40:38+08:00", "utc": "1964-11-01T11:40:38Z", "ms": -162994761608.8482 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1964-11-02", "window": { "start": { "local": "1964-11-02T17:53:13+08:00", "utc": "1964-11-02T09:53:13Z", "ms": -162914807122.34595 }, "end": { "local": "1964-11-02T19:39:54+08:00", "utc": "1964-11-02T11:39:54Z", "ms": -162908405813.46942 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:36 on Sun 1 Nov to 13:42 on Mon 2 Nov.", "fact": "1964-11-01T05:35:43Z → 1964-11-02T05:41:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:41 on the 1st, 17:53–19:40 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 1st and 0 of 107 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15091 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Sunday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-01", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Sunday 1 November. Trayodaśī runs from 13:36 on Sun 1 Nov to 13:42 on Mon 2 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-11-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-11-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35677, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "end": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "end": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 } }, "kaala": "nishita", "days": [ { "local_date": "1964-11-02", "window": { "start": { "local": "1964-11-03T00:09:18+08:00", "utc": "1964-11-02T16:09:18Z", "ms": -162892242214.05902 }, "end": { "local": "1964-11-03T00:57:18+08:00", "utc": "1964-11-02T16:57:18Z", "ms": -162889362214.05902 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-03", "window": { "start": { "local": "1964-11-04T00:09:18+08:00", "utc": "1964-11-03T16:09:18Z", "ms": -162805842216.1988 }, "end": { "local": "1964-11-04T00:57:18+08:00", "utc": "1964-11-03T16:57:18Z", "ms": -162802962216.1988 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:42 on Mon 2 Nov to 14:15 on Tue 3 Nov.", "fact": "1964-11-02T05:41:42Z → 1964-11-03T06:14:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:09–00:57 on the 2nd, 00:09–00:57 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35677 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Monday 2 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-02", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Monday 2 November. Caturdaśī runs from 13:42 on Mon 2 Nov to 14:15 on Tue 3 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-11-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23358, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "end": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-02T13:41:42+08:00", "utc": "1964-11-02T05:41:42Z", "ms": -162929897698.1502 }, "end": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 } }, "kaala": "arunodaya", "days": [ { "local_date": "1964-11-02", "window": { "start": { "local": "1964-11-02T05:25:59+08:00", "utc": "1964-11-01T21:25:59Z", "ms": -162959641195.6947 }, "end": { "local": "1964-11-02T07:12:24+08:00", "utc": "1964-11-01T23:12:24Z", "ms": -162953255666.03043 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1964-11-03", "window": { "start": { "local": "1964-11-03T05:26:41+08:00", "utc": "1964-11-02T21:26:41Z", "ms": -162873198614.6486 }, "end": { "local": "1964-11-03T07:13:23+08:00", "utc": "1964-11-02T23:13:23Z", "ms": -162866797305.77206 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:42 on Mon 2 Nov to 14:15 on Tue 3 Nov.", "fact": "1964-11-02T05:41:42Z → 1964-11-03T06:14:41Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:26–07:12 on the 2nd, 05:27–07:13 on the 3rd.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 106 minutes on the 2nd and 107 of 107 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23358 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Qingyang, 1964: Tuesday 3 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-03", "confidence": "determinate" } ], "quote": "In Qingyang, Naraka Caturdaśī (Choti Diwali) 1964 falls on Tuesday 3 November. Caturdaśī runs from 13:42 on Mon 2 Nov to 14:15 on Tue 3 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/qingyang/festivals/1964/naraka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9299, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "end": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "end": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-03", "window": { "start": { "local": "1964-11-03T17:52:14+08:00", "utc": "1964-11-03T09:52:14Z", "ms": -162828465756.49994 }, "end": { "local": "1964-11-03T19:39:11+08:00", "utc": "1964-11-03T11:39:11Z", "ms": -162822048812.41965 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1964-11-04", "window": { "start": { "local": "1964-11-04T17:51:17+08:00", "utc": "1964-11-04T09:51:17Z", "ms": -162742123012.4552 }, "end": { "local": "1964-11-04T19:38:29+08:00", "utc": "1964-11-04T11:38:29Z", "ms": -162735690583.74286 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:15 on Tue 3 Nov to 15:16 on Wed 4 Nov.", "fact": "1964-11-03T06:14:41Z → 1964-11-04T07:16:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:52–19:39 on the 3rd, 17:51–19:38 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 107 of 107 minutes on the 3rd and 0 of 107 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9299 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Qingyang, 1964: Tuesday 3 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-03", "confidence": "determinate" } ], "quote": "In Qingyang, Lakṣmī Pūjā (Diwali) 1964 falls on Tuesday 3 November. Amāvasyā runs from 14:15 on Tue 3 Nov to 15:16 on Wed 4 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/diwali-lakshmi-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31981, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "end": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-03T14:14:41+08:00", "utc": "1964-11-03T06:14:41Z", "ms": -162841519398.8128 }, "end": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 } }, "kaala": "nishita", "days": [ { "local_date": "1964-11-03", "window": { "start": { "local": "1964-11-04T00:09:18+08:00", "utc": "1964-11-03T16:09:18Z", "ms": -162805842216.1988 }, "end": { "local": "1964-11-04T00:57:18+08:00", "utc": "1964-11-03T16:57:18Z", "ms": -162802962216.1988 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-04", "window": { "start": { "local": "1964-11-05T00:09:19+08:00", "utc": "1964-11-04T16:09:19Z", "ms": -162719441404.78394 }, "end": { "local": "1964-11-05T00:57:19+08:00", "utc": "1964-11-04T16:57:19Z", "ms": -162716561404.78394 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:15 on Tue 3 Nov to 15:16 on Wed 4 Nov.", "fact": "1964-11-03T06:14:41Z → 1964-11-04T07:16:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:09–00:57 on the 3rd, 00:09–00:57 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31981 s" }, { "step": "ruling", "text": "Kālī Pūjā, Qingyang, 1964: Tuesday 3 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-03", "confidence": "determinate" } ], "quote": "In Qingyang, Kālī Pūjā 1964 falls on Tuesday 3 November. Amāvasyā runs from 14:15 on Tue 3 Nov to 15:16 on Wed 4 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/kali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3789, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-04", "window": { "start": { "local": "1964-11-04T17:51:17+08:00", "utc": "1964-11-04T09:51:17Z", "ms": -162742123012.4552 }, "end": { "local": "1964-11-04T19:38:29+08:00", "utc": "1964-11-04T11:38:29Z", "ms": -162735690583.74286 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1964-11-05", "window": { "start": { "local": "1964-11-05T17:50:21+08:00", "utc": "1964-11-05T09:50:21Z", "ms": -162655778861.867 }, "end": { "local": "1964-11-05T19:37:49+08:00", "utc": "1964-11-05T11:37:49Z", "ms": -162649331105.81558 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov.", "fact": "1964-11-04T07:16:18Z → 1964-11-05T08:47:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:38 on the 4th, 17:50–19:38 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 107 of 107 minutes on the 4th and 0 of 107 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3789 s" }, { "step": "ruling", "text": "Bali Pūjā, Qingyang, 1964: Wednesday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-04", "confidence": "determinate" } ], "quote": "In Qingyang, Bali Pūjā 1964 falls on Wednesday 4 November. Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/bali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8368, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-04", "window": { "start": { "local": "1964-11-04T12:08:49+08:00", "utc": "1964-11-04T04:08:49Z", "ms": -162762670844.17642 }, "end": { "local": "1964-11-04T12:56:49+08:00", "utc": "1964-11-04T04:56:49Z", "ms": -162759790844.17642 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-11-05", "window": { "start": { "local": "1964-11-05T12:08:51+08:00", "utc": "1964-11-05T04:08:51Z", "ms": -162676269329.4898 }, "end": { "local": "1964-11-05T12:56:51+08:00", "utc": "1964-11-05T04:56:51Z", "ms": -162673389329.4898 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov.", "fact": "1964-11-04T07:16:18Z → 1964-11-05T08:47:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 4th, 12:09–12:57 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8368 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Qingyang, 1964: Thursday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-05", "confidence": "determinate" } ], "quote": "In Qingyang, Govardhana Pūjā 1964 falls on Thursday 5 November. Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/govardhana-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16178, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-04T15:16:18+08:00", "utc": "1964-11-04T07:16:18Z", "ms": -162751422498.58466 }, "end": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 } }, "kaala": "purvahna", "days": [ { "local_date": "1964-11-04", "window": { "start": { "local": "1964-11-04T07:14:21+08:00", "utc": "1964-11-03T23:14:21Z", "ms": -162780338675.89764 }, "end": { "local": "1964-11-04T10:46:40+08:00", "utc": "1964-11-04T02:46:40Z", "ms": -162767600121.41684 } }, "covered_min": 0, "window_min": 212, "qualifies": false }, { "local_date": "1964-11-05", "window": { "start": { "local": "1964-11-05T07:15:20+08:00", "utc": "1964-11-04T23:15:20Z", "ms": -162693879797.11264 }, "end": { "local": "1964-11-05T10:47:01+08:00", "utc": "1964-11-05T02:47:01Z", "ms": -162681179485.3641 } }, "covered_min": 212, "window_min": 212, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov.", "fact": "1964-11-04T07:16:18Z → 1964-11-05T08:47:12Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:14–10:47 on the 4th, 07:15–10:47 on the 5th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 212 minutes on the 4th and 212 of 212 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16178 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Qingyang, 1964: Thursday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-05", "confidence": "determinate" } ], "quote": "In Qingyang, Dyūta Pratipad 1964 falls on Thursday 5 November. Pratipadā runs from 15:16 on Wed 4 Nov to 16:47 on Thu 5 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/qingyang/festivals/1964/dyuta-pratipad", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13822, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 }, "end": { "local": "1964-11-06T18:46:10+08:00", "utc": "1964-11-06T10:46:10Z", "ms": -162566029640.13095 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-05T16:47:12+08:00", "utc": "1964-11-05T08:47:12Z", "ms": -162659567548.8406 }, "end": { "local": "1964-11-06T18:46:10+08:00", "utc": "1964-11-06T10:46:10Z", "ms": -162566029640.13095 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-05", "window": { "start": { "local": "1964-11-05T12:08:51+08:00", "utc": "1964-11-05T04:08:51Z", "ms": -162676269329.4898 }, "end": { "local": "1964-11-05T12:56:51+08:00", "utc": "1964-11-05T04:56:51Z", "ms": -162673389329.4898 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-11-06", "window": { "start": { "local": "1964-11-06T12:08:53+08:00", "utc": "1964-11-06T04:08:53Z", "ms": -162589866983.97552 }, "end": { "local": "1964-11-06T12:56:53+08:00", "utc": "1964-11-06T04:56:53Z", "ms": -162586986983.97552 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 16:47 on Thu 5 Nov to 18:46 on Fri 6 Nov.", "fact": "1964-11-05T08:47:12Z → 1964-11-06T10:46:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 5th, 12:09–12:57 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13822 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Qingyang, 1964: Friday 6 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-06", "confidence": "determinate" } ], "quote": "In Qingyang, Yama Dvitīyā (Bhai Dooj) 1964 falls on Friday 6 November. Dvitīyā runs from 16:47 on Thu 5 Nov to 18:46 on Fri 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/yama-dvitiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29531, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-11-07T21:09:07+08:00", "utc": "1964-11-07T13:09:07Z", "ms": -162471052877.0099 }, "end": { "local": "1964-11-08T23:48:32+08:00", "utc": "1964-11-08T15:48:32Z", "ms": -162375087718.6411 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-07T21:09:07+08:00", "utc": "1964-11-07T13:09:07Z", "ms": -162471052877.0099 }, "end": { "local": "1964-11-08T23:48:32+08:00", "utc": "1964-11-08T15:48:32Z", "ms": -162375087718.6411 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-07", "window": { "start": { "local": "1964-11-07T12:08:56+08:00", "utc": "1964-11-07T04:08:56Z", "ms": -162503463805.16473 }, "end": { "local": "1964-11-07T12:56:56+08:00", "utc": "1964-11-07T04:56:56Z", "ms": -162500583805.16473 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-11-08", "window": { "start": { "local": "1964-11-08T12:09:00+08:00", "utc": "1964-11-08T04:09:00Z", "ms": -162417059791.16562 }, "end": { "local": "1964-11-08T12:57:00+08:00", "utc": "1964-11-08T04:57:00Z", "ms": -162414179791.16562 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:09 on Sat 7 Nov to 23:49 on Sun 8 Nov.", "fact": "1964-11-07T13:09:07Z → 1964-11-08T15:48:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 7th, 12:09–12:57 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29531 s" }, { "step": "ruling", "text": "Nāga Caturthī, Qingyang, 1964: Sunday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-08", "confidence": "determinate" } ], "quote": "In Qingyang, Nāga Caturthī 1964 falls on Sunday 8 November. Caturthī runs from 21:09 on Sat 7 Nov to 23:49 on Sun 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/naga-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-11-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29531, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-11-07T21:09:07+08:00", "utc": "1964-11-07T13:09:07Z", "ms": -162471052877.0099 }, "end": { "local": "1964-11-08T23:48:32+08:00", "utc": "1964-11-08T15:48:32Z", "ms": -162375087718.6411 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-07T21:09:07+08:00", "utc": "1964-11-07T13:09:07Z", "ms": -162471052877.0099 }, "end": { "local": "1964-11-08T23:48:32+08:00", "utc": "1964-11-08T15:48:32Z", "ms": -162375087718.6411 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-07", "window": { "start": { "local": "1964-11-07T12:08:56+08:00", "utc": "1964-11-07T04:08:56Z", "ms": -162503463805.16473 }, "end": { "local": "1964-11-07T12:56:56+08:00", "utc": "1964-11-07T04:56:56Z", "ms": -162500583805.16473 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-11-08", "window": { "start": { "local": "1964-11-08T12:09:00+08:00", "utc": "1964-11-08T04:09:00Z", "ms": -162417059791.16562 }, "end": { "local": "1964-11-08T12:57:00+08:00", "utc": "1964-11-08T04:57:00Z", "ms": -162414179791.16562 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:09 on Sat 7 Nov to 23:49 on Sun 8 Nov.", "fact": "1964-11-07T13:09:07Z → 1964-11-08T15:48:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 7th, 12:09–12:57 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29531 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Sunday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-08", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Sunday 8 November. Caturthī runs from 21:09 on Sat 7 Nov to 23:49 on Sun 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-11-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25128, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-11-10T02:33:29+08:00", "utc": "1964-11-09T18:33:29Z", "ms": -162278790701.98764 }, "end": { "local": "1964-11-11T05:10:29+08:00", "utc": "1964-11-10T21:10:29Z", "ms": -162182970965.48038 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-10T02:33:29+08:00", "utc": "1964-11-09T18:33:29Z", "ms": -162278790701.98764 }, "end": { "local": "1964-11-11T05:10:29+08:00", "utc": "1964-11-10T21:10:29Z", "ms": -162182970965.48038 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-10", "window": { "start": { "local": "1964-11-10T12:09:11+08:00", "utc": "1964-11-10T04:09:11Z", "ms": -162244249252.77774 }, "end": { "local": "1964-11-10T12:57:11+08:00", "utc": "1964-11-10T04:57:11Z", "ms": -162241369252.77774 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-11", "window": { "start": { "local": "1964-11-11T12:09:17+08:00", "utc": "1964-11-11T04:09:17Z", "ms": -162157842727.33838 }, "end": { "local": "1964-11-11T12:57:17+08:00", "utc": "1964-11-11T04:57:17Z", "ms": -162154962727.33838 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:33 on Tue 10 Nov to 05:10 on Wed 11 Nov.", "fact": "1964-11-09T18:33:29Z → 1964-11-10T21:10:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 10th, 12:09–12:57 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25128 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Qingyang, 1964: Tuesday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-10", "confidence": "determinate" } ], "quote": "In Qingyang, Sūrya Ṣaṣṭhī (Chhath) 1964 falls on Tuesday 10 November. Ṣaṣṭhī runs from 02:33 on Tue 10 Nov to 05:10 on Wed 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/surya-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11080, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1964-11-12T07:25:15+08:00", "utc": "1964-11-11T23:25:15Z", "ms": -162088485291.8367 }, "end": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-12T07:25:15+08:00", "utc": "1964-11-11T23:25:15Z", "ms": -162088485291.8367 }, "end": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-12", "window": { "start": { "local": "1964-11-12T12:09:25+08:00", "utc": "1964-11-12T04:09:25Z", "ms": -162071435364.6045 }, "end": { "local": "1964-11-12T12:57:25+08:00", "utc": "1964-11-12T04:57:25Z", "ms": -162068555364.6045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-13", "window": { "start": { "local": "1964-11-13T12:09:33+08:00", "utc": "1964-11-13T04:09:33Z", "ms": -161985027165.37424 }, "end": { "local": "1964-11-13T12:57:33+08:00", "utc": "1964-11-13T04:57:33Z", "ms": -161982147165.37424 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 07:25 on Thu 12 Nov to 09:05 on Fri 13 Nov.", "fact": "1964-11-11T23:25:15Z → 1964-11-13T01:04:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 12th, 12:10–12:58 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11080 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Qingyang, 1964: Thursday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-12", "confidence": "determinate" } ], "quote": "In Qingyang, Gopāṣṭamī 1964 falls on Thursday 12 November. Aṣṭamī runs from 07:25 on Thu 12 Nov to 09:05 on Fri 13 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/gopashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7793, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 }, "end": { "local": "1964-11-14T09:59:49+08:00", "utc": "1964-11-14T01:59:49Z", "ms": -161906411101.82462 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 }, "end": { "local": "1964-11-14T09:59:49+08:00", "utc": "1964-11-14T01:59:49Z", "ms": -161906411101.82462 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-13", "window": { "start": { "local": "1964-11-13T12:09:33+08:00", "utc": "1964-11-13T04:09:33Z", "ms": -161985027165.37424 }, "end": { "local": "1964-11-13T12:57:33+08:00", "utc": "1964-11-13T04:57:33Z", "ms": -161982147165.37424 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-14", "window": { "start": { "local": "1964-11-14T12:09:42+08:00", "utc": "1964-11-14T04:09:42Z", "ms": -161898618130.89825 }, "end": { "local": "1964-11-14T12:57:42+08:00", "utc": "1964-11-14T04:57:42Z", "ms": -161895738130.89825 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:05 on Fri 13 Nov to 10:00 on Sat 14 Nov.", "fact": "1964-11-13T01:04:53Z → 1964-11-14T01:59:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 13th, 12:10–12:58 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7793 s" }, { "step": "ruling", "text": "Durgā Navamī, Qingyang, 1964: Friday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-13", "confidence": "determinate" } ], "quote": "In Qingyang, Durgā Navamī 1964 falls on Friday 13 November. Navamī runs from 09:05 on Fri 13 Nov to 10:00 on Sat 14 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/durga-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 3045, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 }, "end": { "local": "1964-11-14T09:59:49+08:00", "utc": "1964-11-14T01:59:49Z", "ms": -161906411101.82462 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-13T09:04:53+08:00", "utc": "1964-11-13T01:04:53Z", "ms": -161996107276.17203 }, "end": { "local": "1964-11-14T09:59:49+08:00", "utc": "1964-11-14T01:59:49Z", "ms": -161906411101.82462 } }, "kaala": "purvahna", "days": [ { "local_date": "1964-11-13", "window": { "start": { "local": "1964-11-13T07:23:17+08:00", "utc": "1964-11-12T23:23:17Z", "ms": -162002202690.79172 }, "end": { "local": "1964-11-13T10:50:08+08:00", "utc": "1964-11-13T02:50:08Z", "ms": -161989792340.5134 } }, "covered_min": 105, "window_min": 207, "qualifies": true }, { "local_date": "1964-11-14", "window": { "start": { "local": "1964-11-14T07:24:17+08:00", "utc": "1964-11-13T23:24:17Z", "ms": -161915742695.58282 }, "end": { "local": "1964-11-14T10:50:34+08:00", "utc": "1964-11-14T02:50:34Z", "ms": -161903366319.12646 } }, "covered_min": 156, "window_min": 206, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:05 on Fri 13 Nov to 10:00 on Sat 14 Nov.", "fact": "1964-11-13T01:04:53Z → 1964-11-14T01:59:49Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:23–10:50 on the 13th, 07:24–10:51 on the 14th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 105 of 207 minutes on the 13th and 156 of 206 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 3045 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Qingyang, 1964: Saturday 14 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-14", "confidence": "boundary" } ], "quote": "In Qingyang, Akṣaya Navamī (Amla Navami) 1964 falls on Saturday 14 November. Navamī runs from 09:05 on Fri 13 Nov to 10:00 on Sat 14 Nov and covers 156 of 206 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 105 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/akshaya-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-11-16", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6806, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-11-15T10:04:56+08:00", "utc": "1964-11-15T02:04:56Z", "ms": -161819703895.44055 }, "end": { "local": "1964-11-16T09:19:43+08:00", "utc": "1964-11-16T01:19:43Z", "ms": -161736017123.92795 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-15T10:04:56+08:00", "utc": "1964-11-15T02:04:56Z", "ms": -161819703895.44055 }, "end": { "local": "1964-11-16T09:19:43+08:00", "utc": "1964-11-16T01:19:43Z", "ms": -161736017123.92795 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-11-15", "window": { "start": { "local": "1964-11-15T07:25:17+08:00", "utc": "1964-11-14T23:25:17Z", "ms": -161829282718.21997 }, "end": { "local": "1964-11-15T07:25:17+08:00", "utc": "1964-11-14T23:25:17Z", "ms": -161829282718.21997 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-11-16", "window": { "start": { "local": "1964-11-16T07:26:17+08:00", "utc": "1964-11-15T23:26:17Z", "ms": -161742822789.29504 }, "end": { "local": "1964-11-16T07:26:17+08:00", "utc": "1964-11-15T23:26:17Z", "ms": -161742822789.29504 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:05 on Sun 15 Nov to 09:20 on Mon 16 Nov.", "fact": "1964-11-15T02:04:56Z → 1964-11-16T01:19:43Z" }, { "step": "kaala", "text": "Sunrise is at 07:25 on the 15th and 07:26 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6806 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Qingyang, 1964: Monday 16 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-16", "confidence": "determinate" } ], "quote": "In Qingyang, Prabodhinī Ekādaśī 1964 falls on Monday 16 November. Ekādaśī runs from 10:05 on Sun 15 Nov to 09:20 on Mon 16 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-11-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-11-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35615, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-11-17T07:47:36+08:00", "utc": "1964-11-16T23:47:36Z", "ms": -161655144066.04245 }, "end": { "local": "1964-11-18T05:35:00+08:00", "utc": "1964-11-17T21:35:00Z", "ms": -161576700036.20993 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-17T07:47:36+08:00", "utc": "1964-11-16T23:47:36Z", "ms": -161655144066.04245 }, "end": { "local": "1964-11-18T05:35:00+08:00", "utc": "1964-11-17T21:35:00Z", "ms": -161576700036.20993 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-17", "window": { "start": { "local": "1964-11-17T17:41:11+08:00", "utc": "1964-11-17T09:41:11Z", "ms": -161619529127.2669 }, "end": { "local": "1964-11-17T19:31:28+08:00", "utc": "1964-11-17T11:31:28Z", "ms": -161612912336.73306 } }, "covered_min": 110, "window_min": 110, "qualifies": true }, { "local_date": "1964-11-18", "window": { "start": { "local": "1964-11-18T17:40:36+08:00", "utc": "1964-11-18T09:40:36Z", "ms": -161533164152.55148 }, "end": { "local": "1964-11-18T19:31:05+08:00", "utc": "1964-11-18T11:31:05Z", "ms": -161526534745.1515 } }, "covered_min": 0, "window_min": 110, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:48 on Tue 17 Nov to 05:35 on Wed 18 Nov.", "fact": "1964-11-16T23:47:36Z → 1964-11-17T21:35:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:41–19:31 on the 17th, 17:41–19:31 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 110 of 110 minutes on the 17th and 0 of 110 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35615 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Tuesday 17 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-17", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Tuesday 17 November. Trayodaśī runs from 07:48 on Tue 17 Nov to 05:35 on Wed 18 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33624, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-11-19T02:50:15+08:00", "utc": "1964-11-18T18:50:15Z", "ms": -161500184950.73083 }, "end": { "local": "1964-11-19T23:42:43+08:00", "utc": "1964-11-19T15:42:43Z", "ms": -161425036653.98672 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-19T02:50:15+08:00", "utc": "1964-11-18T18:50:15Z", "ms": -161500184950.73083 }, "end": { "local": "1964-11-19T23:42:43+08:00", "utc": "1964-11-19T15:42:43Z", "ms": -161425036653.98672 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-11-19", "window": { "start": { "local": "1964-11-19T12:10:40+08:00", "utc": "1964-11-19T04:10:40Z", "ms": -161466560491.9625 }, "end": { "local": "1964-11-19T12:58:40+08:00", "utc": "1964-11-19T04:58:40Z", "ms": -161463680491.9625 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-11-20", "window": { "start": { "local": "1964-11-20T12:10:54+08:00", "utc": "1964-11-20T04:10:54Z", "ms": -161380146485.13818 }, "end": { "local": "1964-11-20T12:58:54+08:00", "utc": "1964-11-20T04:58:54Z", "ms": -161377266485.13818 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:50 on Thu 19 Nov to 23:43 on Thu 19 Nov.", "fact": "1964-11-18T18:50:15Z → 1964-11-19T15:42:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 19th, 12:11–12:59 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33624 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Qingyang, 1964: Thursday 19 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kartiki-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-19", "confidence": "determinate" } ], "quote": "In Qingyang, Kārtikī Pūrṇimā 1964 falls on Thursday 19 November. Pūrṇimā runs from 02:50 on Thu 19 Nov to 23:43 on Thu 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/kartiki-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1706, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-11-19T02:50:15+08:00", "utc": "1964-11-18T18:50:15Z", "ms": -161500184950.73083 }, "end": { "local": "1964-11-19T23:42:43+08:00", "utc": "1964-11-19T15:42:43Z", "ms": -161425036653.98672 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1964-11-19T02:50:15+08:00", "utc": "1964-11-18T18:50:15Z", "ms": -161500184950.73083 }, "end": { "local": "1964-11-19T23:42:43+08:00", "utc": "1964-11-19T15:42:43Z", "ms": -161425036653.98672 } }, "kaala": "nishita", "days": [ { "local_date": "1964-11-18", "window": { "start": { "local": "1964-11-19T00:10:56+08:00", "utc": "1964-11-18T16:10:56Z", "ms": -161509743874.80145 }, "end": { "local": "1964-11-19T00:58:56+08:00", "utc": "1964-11-18T16:58:56Z", "ms": -161506863874.80145 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-11-19", "window": { "start": { "local": "1964-11-20T00:11:09+08:00", "utc": "1964-11-19T16:11:09Z", "ms": -161423330776.13995 }, "end": { "local": "1964-11-20T00:59:09+08:00", "utc": "1964-11-19T16:59:09Z", "ms": -161420450776.13995 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:50 on Thu 19 Nov to 23:43 on Thu 19 Nov.", "fact": "1964-11-18T18:50:15Z → 1964-11-19T15:42:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 18th, 00:11–00:59 on the 19th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither night qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 1706 s" }, { "step": "ruling", "text": "Rāsayātrā, Qingyang, 1964: Thursday 19 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rasayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-19", "confidence": "determinate" } ], "quote": "In Qingyang, Rāsayātrā 1964 falls on Thursday 19 November. Pūrṇimā runs from 02:50 on Thu 19 Nov to 23:43 on Thu 19 Nov, and reaches niśītha on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/rasayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-11-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23628, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-11-22T13:39:40+08:00", "utc": "1964-11-22T05:39:40Z", "ms": -161202020309.21793 }, "end": { "local": "1964-11-23T10:35:08+08:00", "utc": "1964-11-23T02:35:08Z", "ms": -161126692074.2054 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-11-22T13:39:40+08:00", "utc": "1964-11-22T05:39:40Z", "ms": -161202020309.21793 }, "end": { "local": "1964-11-23T10:35:08+08:00", "utc": "1964-11-23T02:35:08Z", "ms": -161126692074.2054 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-11-22", "window": { "start": { "local": "1964-11-22T20:13:27+08:00", "utc": "1964-11-22T12:13:27Z", "ms": -161178392547.69803 }, "end": { "local": "1964-11-22T20:13:27+08:00", "utc": "1964-11-22T12:13:27Z", "ms": -161178392547.69803 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-11-23", "window": { "start": { "local": "1964-11-23T21:19:33+08:00", "utc": "1964-11-23T13:19:33Z", "ms": -161088026666.82388 }, "end": { "local": "1964-11-23T21:19:33+08:00", "utc": "1964-11-23T13:19:33Z", "ms": -161088026666.82388 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:40 on Sun 22 Nov to 10:35 on Mon 23 Nov.", "fact": "1964-11-22T05:39:40Z → 1964-11-23T02:35:08Z" }, { "step": "kaala", "text": "Moonrise is at 20:13 on the 22nd and 21:20 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23628 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Sunday 22 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-22", "confidence": "determinate" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Sunday 22 November. Caturthī runs from 13:40 on Sun 22 Nov to 10:35 on Mon 23 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-11-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-11-29", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18329, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-11-29T02:02:24+08:00", "utc": "1964-11-28T18:02:24Z", "ms": -160639055879.62082 }, "end": { "local": "1964-11-30T02:34:24+08:00", "utc": "1964-11-29T18:34:24Z", "ms": -160550735561.39023 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-11-29T02:02:24+08:00", "utc": "1964-11-28T18:02:24Z", "ms": -160639055879.62082 }, "end": { "local": "1964-11-30T02:34:24+08:00", "utc": "1964-11-29T18:34:24Z", "ms": -160550735561.39023 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-11-29", "window": { "start": { "local": "1964-11-29T07:38:57+08:00", "utc": "1964-11-28T23:38:57Z", "ms": -160618862703.34067 }, "end": { "local": "1964-11-29T07:38:57+08:00", "utc": "1964-11-28T23:38:57Z", "ms": -160618862703.34067 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-11-30", "window": { "start": { "local": "1964-11-30T07:39:53+08:00", "utc": "1964-11-29T23:39:53Z", "ms": -160532407022.08835 }, "end": { "local": "1964-11-30T07:39:53+08:00", "utc": "1964-11-29T23:39:53Z", "ms": -160532407022.08835 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:02 on Sun 29 Nov to 02:34 on Mon 30 Nov.", "fact": "1964-11-28T18:02:24Z → 1964-11-29T18:34:24Z" }, { "step": "kaala", "text": "Sunrise is at 07:39 on the 29th and 07:40 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18329 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Qingyang, 1964: Sunday 29 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-11-29", "confidence": "determinate" } ], "quote": "In Qingyang, Utpannā Ekādaśī 1964 falls on Sunday 29 November. Ekādaśī runs from 02:02 on Sun 29 Nov to 02:34 on Mon 30 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-11-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-12-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29306, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-12-01T03:37:06+08:00", "utc": "1964-11-30T19:37:06Z", "ms": -160460573936.0766 }, "end": { "local": "1964-12-02T05:07:34+08:00", "utc": "1964-12-01T21:07:34Z", "ms": -160368746182.2301 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-01T03:37:06+08:00", "utc": "1964-11-30T19:37:06Z", "ms": -160460573936.0766 }, "end": { "local": "1964-12-02T05:07:34+08:00", "utc": "1964-12-01T21:07:34Z", "ms": -160368746182.2301 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-11-30", "window": { "start": { "local": "1964-11-30T17:36:02+08:00", "utc": "1964-11-30T09:36:02Z", "ms": -160496638314.09912 }, "end": { "local": "1964-11-30T19:28:40+08:00", "utc": "1964-11-30T11:28:40Z", "ms": -160489880134.53638 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "1964-12-01", "window": { "start": { "local": "1964-12-01T17:35:52+08:00", "utc": "1964-12-01T09:35:52Z", "ms": -160410248454.09094 }, "end": { "local": "1964-12-01T19:28:38+08:00", "utc": "1964-12-01T11:28:38Z", "ms": -160403481672.33185 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:37 on Tue 1 Dec to 05:08 on Wed 2 Dec.", "fact": "1964-11-30T19:37:06Z → 1964-12-01T21:07:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:36–19:29 on the 30th, 17:36–19:29 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 113 minutes on the 30th and 113 of 113 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29306 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Tuesday 1 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-01", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Tuesday 1 December. Trayodaśī runs from 03:37 on Tue 1 Dec to 05:08 on Wed 2 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-12-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-12-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14687, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-12-02T05:07:34+08:00", "utc": "1964-12-01T21:07:34Z", "ms": -160368746182.2301 }, "end": { "local": "1964-12-03T07:02:31+08:00", "utc": "1964-12-02T23:02:31Z", "ms": -160275449384.7088 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-02T05:07:34+08:00", "utc": "1964-12-01T21:07:34Z", "ms": -160368746182.2301 }, "end": { "local": "1964-12-03T07:02:31+08:00", "utc": "1964-12-02T23:02:31Z", "ms": -160275449384.7088 } }, "kaala": "nishita", "days": [ { "local_date": "1964-12-01", "window": { "start": { "local": "1964-12-02T00:14:47+08:00", "utc": "1964-12-01T16:14:47Z", "ms": -160386313022.4944 }, "end": { "local": "1964-12-02T01:02:47+08:00", "utc": "1964-12-01T17:02:47Z", "ms": -160383433022.4944 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-02", "window": { "start": { "local": "1964-12-03T00:15:10+08:00", "utc": "1964-12-02T16:15:10Z", "ms": -160299890269.88098 }, "end": { "local": "1964-12-03T01:03:10+08:00", "utc": "1964-12-02T17:03:10Z", "ms": -160297010269.88098 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:08 on Wed 2 Dec to 07:03 on Thu 3 Dec.", "fact": "1964-12-01T21:07:34Z → 1964-12-02T23:02:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:15–01:03 on the 1st, 00:15–01:03 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14687 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Wednesday 2 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-02", "confidence": "determinate" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Wednesday 2 December. Caturdaśī runs from 05:08 on Wed 2 Dec to 07:03 on Thu 3 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-12-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-12-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15181, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-12-07T17:17:49+08:00", "utc": "1964-12-07T09:17:49Z", "ms": -159892931350.78455 }, "end": { "local": "1964-12-08T19:57:19+08:00", "utc": "1964-12-08T11:57:19Z", "ms": -159796960740.16125 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-07T17:17:49+08:00", "utc": "1964-12-07T09:17:49Z", "ms": -159892931350.78455 }, "end": { "local": "1964-12-08T19:57:19+08:00", "utc": "1964-12-08T11:57:19Z", "ms": -159796960740.16125 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-07", "window": { "start": { "local": "1964-12-07T12:16:47+08:00", "utc": "1964-12-07T04:16:47Z", "ms": -159910992524.97043 }, "end": { "local": "1964-12-07T13:04:47+08:00", "utc": "1964-12-07T05:04:47Z", "ms": -159908112524.97043 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-08", "window": { "start": { "local": "1964-12-08T12:17:14+08:00", "utc": "1964-12-08T04:17:14Z", "ms": -159824566016.15445 }, "end": { "local": "1964-12-08T13:05:14+08:00", "utc": "1964-12-08T05:05:14Z", "ms": -159821686016.15445 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:18 on Mon 7 Dec to 19:57 on Tue 8 Dec.", "fact": "1964-12-07T09:17:49Z → 1964-12-08T11:57:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 7th, 12:17–13:05 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15181 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Qingyang, 1964: Tuesday 8 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-08", "confidence": "determinate" } ], "quote": "In Qingyang, Vināyaka Caturthī 1964 falls on Tuesday 8 December. Caturthī runs from 17:18 on Mon 7 Dec to 19:57 on Tue 8 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/vinayaka-chaturthi?on=1964-12-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24725, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1964-12-08T19:57:19+08:00", "utc": "1964-12-08T11:57:19Z", "ms": -159796960740.16125 }, "end": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-08T19:57:19+08:00", "utc": "1964-12-08T11:57:19Z", "ms": -159796960740.16125 }, "end": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-08", "window": { "start": { "local": "1964-12-08T12:17:14+08:00", "utc": "1964-12-08T04:17:14Z", "ms": -159824566016.15445 }, "end": { "local": "1964-12-08T13:05:14+08:00", "utc": "1964-12-08T05:05:14Z", "ms": -159821686016.15445 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-09", "window": { "start": { "local": "1964-12-09T12:17:41+08:00", "utc": "1964-12-09T04:17:41Z", "ms": -159738139045.982 }, "end": { "local": "1964-12-09T13:05:41+08:00", "utc": "1964-12-09T05:05:41Z", "ms": -159735259045.982 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 19:57 on Tue 8 Dec to 22:21 on Wed 9 Dec.", "fact": "1964-12-08T11:57:19Z → 1964-12-09T14:20:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 8th, 12:18–13:06 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24725 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Qingyang, 1964: Wednesday 9 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-09", "confidence": "determinate" } ], "quote": "In Qingyang, Nāga Pañcamī (Mārgaśīrṣa) 1964 falls on Wednesday 9 December. Pañcamī runs from 19:57 on Tue 8 Dec to 22:21 on Wed 9 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/naga-panchami-margashirsha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33298, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 }, "end": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 }, "end": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-09", "window": { "start": { "local": "1964-12-09T12:17:41+08:00", "utc": "1964-12-09T04:17:41Z", "ms": -159738139045.982 }, "end": { "local": "1964-12-09T13:05:41+08:00", "utc": "1964-12-09T05:05:41Z", "ms": -159735259045.982 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-10", "window": { "start": { "local": "1964-12-10T12:18:08+08:00", "utc": "1964-12-10T04:18:08Z", "ms": -159651711645.7624 }, "end": { "local": "1964-12-10T13:06:08+08:00", "utc": "1964-12-10T05:06:08Z", "ms": -159648831645.7624 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 22:21 on Wed 9 Dec to 00:17 on Fri 11 Dec.", "fact": "1964-12-09T14:20:39Z → 1964-12-10T16:17:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:18–13:06 on the 9th, 12:18–13:06 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33298 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Qingyang, 1964: Thursday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-10", "confidence": "determinate" } ], "quote": "In Qingyang, Campā Ṣaṣṭhī 1964 falls on Thursday 10 December. Ṣaṣṭhī runs from 22:21 on Wed 9 Dec to 00:17 on Fri 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/champa-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33298, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 }, "end": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-09T22:20:39+08:00", "utc": "1964-12-09T14:20:39Z", "ms": -159701960601.6516 }, "end": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-09", "window": { "start": { "local": "1964-12-09T12:17:41+08:00", "utc": "1964-12-09T04:17:41Z", "ms": -159738139045.982 }, "end": { "local": "1964-12-09T13:05:41+08:00", "utc": "1964-12-09T05:05:41Z", "ms": -159735259045.982 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-10", "window": { "start": { "local": "1964-12-10T12:18:08+08:00", "utc": "1964-12-10T04:18:08Z", "ms": -159651711645.7624 }, "end": { "local": "1964-12-10T13:06:08+08:00", "utc": "1964-12-10T05:06:08Z", "ms": -159648831645.7624 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 22:21 on Wed 9 Dec to 00:17 on Fri 11 Dec.", "fact": "1964-12-09T14:20:39Z → 1964-12-10T16:17:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:18–13:06 on the 9th, 12:18–13:06 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33298 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Qingyang, 1964: Thursday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-10", "confidence": "determinate" } ], "quote": "In Qingyang, Skanda Ṣaṣṭhī 1964 falls on Thursday 10 December. Ṣaṣṭhī runs from 22:21 on Wed 9 Dec to 00:17 on Fri 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/skanda-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38502, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 }, "end": { "local": "1964-12-12T01:37:22+08:00", "utc": "1964-12-11T17:37:22Z", "ms": -159517358157.81485 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-11T00:17:13+08:00", "utc": "1964-12-10T16:17:13Z", "ms": -159608566799.71683 }, "end": { "local": "1964-12-12T01:37:22+08:00", "utc": "1964-12-11T17:37:22Z", "ms": -159517358157.81485 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-11", "window": { "start": { "local": "1964-12-11T12:18:36+08:00", "utc": "1964-12-11T04:18:36Z", "ms": -159565283847.12964 }, "end": { "local": "1964-12-11T13:06:36+08:00", "utc": "1964-12-11T05:06:36Z", "ms": -159562403847.12964 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1964-12-12", "window": { "start": { "local": "1964-12-12T12:19:04+08:00", "utc": "1964-12-12T04:19:04Z", "ms": -159478855682.10803 }, "end": { "local": "1964-12-12T13:07:04+08:00", "utc": "1964-12-12T05:07:04Z", "ms": -159475975682.10803 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:17 on Fri 11 Dec to 01:37 on Sat 12 Dec.", "fact": "1964-12-10T16:17:13Z → 1964-12-11T17:37:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 11th, 12:19–13:07 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38502 s" }, { "step": "ruling", "text": "Mitra Saptamī, Qingyang, 1964: Friday 11 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mitra-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Mitra saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-11", "confidence": "determinate" } ], "quote": "In Qingyang, Mitra Saptamī 1964 falls on Friday 11 December. Saptamī runs from 00:17 on Fri 11 Dec to 01:37 on Sat 12 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/mitra-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-12-15", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24637, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-12-15T01:01:26+08:00", "utc": "1964-12-14T17:01:26Z", "ms": -159260313812.2289 }, "end": { "local": "1964-12-15T23:14:47+08:00", "utc": "1964-12-15T15:14:47Z", "ms": -159180313286.97128 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-15T01:01:26+08:00", "utc": "1964-12-14T17:01:26Z", "ms": -159260313812.2289 }, "end": { "local": "1964-12-15T23:14:47+08:00", "utc": "1964-12-15T15:14:47Z", "ms": -159180313286.97128 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-12-15", "window": { "start": { "local": "1964-12-15T07:52:04+08:00", "utc": "1964-12-14T23:52:04Z", "ms": -159235676431.41714 }, "end": { "local": "1964-12-15T07:52:04+08:00", "utc": "1964-12-14T23:52:04Z", "ms": -159235676431.41714 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1964-12-16", "window": { "start": { "local": "1964-12-16T07:52:43+08:00", "utc": "1964-12-15T23:52:43Z", "ms": -159149237026.1278 }, "end": { "local": "1964-12-16T07:52:43+08:00", "utc": "1964-12-15T23:52:43Z", "ms": -159149237026.1278 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:01 on Tue 15 Dec to 23:15 on Tue 15 Dec.", "fact": "1964-12-14T17:01:26Z → 1964-12-15T15:14:47Z" }, { "step": "kaala", "text": "Sunrise is at 07:52 on the 15th and 07:53 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24637 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Qingyang, 1964: Tuesday 15 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-15", "confidence": "determinate" } ], "quote": "In Qingyang, Mokṣadā Ekādaśī 1964 falls on Tuesday 15 December. Ekādaśī runs from 01:01 on Tue 15 Dec to 23:15 on Tue 15 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-12-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27501, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1964-12-15T23:14:47+08:00", "utc": "1964-12-15T15:14:47Z", "ms": -159180313286.97128 }, "end": { "local": "1964-12-16T20:47:21+08:00", "utc": "1964-12-16T12:47:21Z", "ms": -159102759130.4645 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-15T23:14:47+08:00", "utc": "1964-12-15T15:14:47Z", "ms": -159180313286.97128 }, "end": { "local": "1964-12-16T20:47:21+08:00", "utc": "1964-12-16T12:47:21Z", "ms": -159102759130.4645 } }, "kaala": "madhyahna", "days": [ { "local_date": "1964-12-15", "window": { "start": { "local": "1964-12-15T12:20:31+08:00", "utc": "1964-12-15T04:20:31Z", "ms": -159219569307.535 }, "end": { "local": "1964-12-15T13:08:31+08:00", "utc": "1964-12-15T05:08:31Z", "ms": -159216689307.535 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1964-12-16", "window": { "start": { "local": "1964-12-16T12:21:00+08:00", "utc": "1964-12-16T04:21:00Z", "ms": -159133139994.2681 }, "end": { "local": "1964-12-16T13:09:00+08:00", "utc": "1964-12-16T05:09:00Z", "ms": -159130259994.2681 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:15 on Tue 15 Dec to 20:47 on Wed 16 Dec.", "fact": "1964-12-15T15:14:47Z → 1964-12-16T12:47:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 15th, 12:21–13:09 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27501 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Qingyang, 1964: Wednesday 16 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akhanda-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-16", "confidence": "determinate" } ], "quote": "In Qingyang, Akhaṇḍa Dvādaśī 1964 falls on Wednesday 16 December. Dvādaśī runs from 23:15 on Tue 15 Dec to 20:47 on Wed 16 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/qingyang/festivals/1964/akhanda-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-12-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 537, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-12-16T20:47:21+08:00", "utc": "1964-12-16T12:47:21Z", "ms": -159102759130.4645 }, "end": { "local": "1964-12-17T17:46:35+08:00", "utc": "1964-12-17T09:46:35Z", "ms": -159027205181.12332 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-16T20:47:21+08:00", "utc": "1964-12-16T12:47:21Z", "ms": -159102759130.4645 }, "end": { "local": "1964-12-17T17:46:35+08:00", "utc": "1964-12-17T09:46:35Z", "ms": -159027205181.12332 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-12-16", "window": { "start": { "local": "1964-12-16T17:37:17+08:00", "utc": "1964-12-16T09:37:17Z", "ms": -159114162962.4084 }, "end": { "local": "1964-12-16T19:31:26+08:00", "utc": "1964-12-16T11:31:26Z", "ms": -159107314440.19846 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1964-12-17", "window": { "start": { "local": "1964-12-17T17:37:38+08:00", "utc": "1964-12-17T09:37:38Z", "ms": -159027741896.03333 }, "end": { "local": "1964-12-17T19:31:49+08:00", "utc": "1964-12-17T11:31:49Z", "ms": -159020891313.54297 } }, "covered_min": 9, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:47 on Wed 16 Dec to 17:47 on Thu 17 Dec.", "fact": "1964-12-16T12:47:21Z → 1964-12-17T09:46:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:31 on the 16th, 17:38–19:32 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 114 minutes on the 16th and 9 of 114 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 537 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Qingyang, 1964: Thursday 17 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-17", "confidence": "determinate" } ], "quote": "In Qingyang, Śukla Pradoṣa Vrata 1964 falls on Thursday 17 December. Trayodaśī runs from 20:47 on Wed 16 Dec to 17:47 on Thu 17 Dec and covers 9 of 114 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11803, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1964-12-18T14:21:18+08:00", "utc": "1964-12-18T06:21:18Z", "ms": -158953121762.85938 }, "end": { "local": "1964-12-19T10:41:11+08:00", "utc": "1964-12-19T02:41:11Z", "ms": -158879928536.2981 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-18T14:21:18+08:00", "utc": "1964-12-18T06:21:18Z", "ms": -158953121762.85938 }, "end": { "local": "1964-12-19T10:41:11+08:00", "utc": "1964-12-19T02:41:11Z", "ms": -158879928536.2981 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-12-18", "window": { "start": { "local": "1964-12-18T17:38:01+08:00", "utc": "1964-12-18T09:38:01Z", "ms": -158941319006.27158 }, "end": { "local": "1964-12-18T19:32:13+08:00", "utc": "1964-12-18T11:32:13Z", "ms": -158934466806.12888 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "1964-12-19", "window": { "start": { "local": "1964-12-19T17:38:26+08:00", "utc": "1964-12-19T09:38:26Z", "ms": -158854894315.82526 }, "end": { "local": "1964-12-19T19:32:39+08:00", "utc": "1964-12-19T11:32:39Z", "ms": -158848040942.01584 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:21 on Fri 18 Dec to 10:41 on Sat 19 Dec.", "fact": "1964-12-18T06:21:18Z → 1964-12-19T02:41:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:38–19:32 on the 18th, 17:38–19:33 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 114 of 114 minutes on the 18th and 0 of 114 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11803 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Qingyang, 1964: Friday 18 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dattatreyotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Dattatreyotpatti (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-18", "confidence": "determinate" } ], "quote": "In Qingyang, Dattātreyotpatti (Datta Jayanti) 1964 falls on Friday 18 December. Pūrṇimā runs from 14:21 on Fri 18 Dec to 10:41 on Sat 19 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/sankashta-chaturthi?on=1964-12-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-21", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1620, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1964-12-21T23:52:55+08:00", "utc": "1964-12-21T15:52:55Z", "ms": -158659625460.0044 }, "end": { "local": "1964-12-22T20:53:41+08:00", "utc": "1964-12-22T12:53:41Z", "ms": -158583979270.8409 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-21T23:52:55+08:00", "utc": "1964-12-21T15:52:55Z", "ms": -158659625460.0044 }, "end": { "local": "1964-12-22T20:53:41+08:00", "utc": "1964-12-22T12:53:41Z", "ms": -158583979270.8409 } }, "kaala": "moonrise", "days": [ { "local_date": "1964-12-21", "window": { "start": { "local": "1964-12-21T20:08:31+08:00", "utc": "1964-12-21T12:08:31Z", "ms": -158673089479.1712 }, "end": { "local": "1964-12-21T20:08:31+08:00", "utc": "1964-12-21T12:08:31Z", "ms": -158673089479.1712 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-12-22", "window": { "start": { "local": "1964-12-22T21:20:41+08:00", "utc": "1964-12-22T13:20:41Z", "ms": -158582359486.2862 }, "end": { "local": "1964-12-22T21:20:41+08:00", "utc": "1964-12-22T13:20:41Z", "ms": -158582359486.2862 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:53 on Mon 21 Dec to 20:54 on Tue 22 Dec.", "fact": "1964-12-21T15:52:55Z → 1964-12-22T12:53:41Z" }, { "step": "kaala", "text": "Moonrise is at 20:09 on the 21st and 21:21 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1620 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Qingyang, 1964: Monday 21 December.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-21", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-21", "confidence": "boundary" } ], "quote": "In Qingyang, Saṅkaṣṭa Caturthī 1964 falls on Monday 21 December. Caturthī runs from 23:53 on Mon 21 Dec to 20:54 on Tue 22 Dec, and is current at moonrise on neither day.", "cite": "https://ahargana.org/qingyang/festivals/1964/sankashta-chaturthi?on=1964-12-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/ekadashi?on=1964-12-29", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32962, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1964-12-28T17:07:57+08:00", "utc": "1964-12-28T09:07:57Z", "ms": -158079123340.76117 }, "end": { "local": "1964-12-29T18:54:52+08:00", "utc": "1964-12-29T10:54:52Z", "ms": -157986307774.8054 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-28T17:07:57+08:00", "utc": "1964-12-28T09:07:57Z", "ms": -158079123340.76117 }, "end": { "local": "1964-12-29T18:54:52+08:00", "utc": "1964-12-29T10:54:52Z", "ms": -157986307774.8054 } }, "kaala": "sunrise", "days": [ { "local_date": "1964-12-28", "window": { "start": { "local": "1964-12-28T07:58:35+08:00", "utc": "1964-12-27T23:58:35Z", "ms": -158112084892.0625 }, "end": { "local": "1964-12-28T07:58:35+08:00", "utc": "1964-12-27T23:58:35Z", "ms": -158112084892.0625 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1964-12-29", "window": { "start": { "local": "1964-12-29T07:58:53+08:00", "utc": "1964-12-28T23:58:53Z", "ms": -158025666555.69904 }, "end": { "local": "1964-12-29T07:58:53+08:00", "utc": "1964-12-28T23:58:53Z", "ms": -158025666555.69904 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:08 on Mon 28 Dec to 18:55 on Tue 29 Dec.", "fact": "1964-12-28T09:07:57Z → 1964-12-29T10:54:52Z" }, { "step": "kaala", "text": "Sunrise is at 07:59 on the 28th and 07:59 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32962 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Qingyang, 1964: Tuesday 29 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-29", "confidence": "determinate" } ], "quote": "In Qingyang, Saphalā Ekādaśī 1964 falls on Tuesday 29 December. Ekādaśī runs from 17:08 on Mon 28 Dec to 18:55 on Tue 29 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/qingyang/festivals/1964/ekadashi?on=1964-12-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/pradosha-vrata?on=1964-12-31", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5389, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1964-12-30T21:08:34+08:00", "utc": "1964-12-30T13:08:34Z", "ms": -157891885856.619 }, "end": { "local": "1964-12-31T23:40:28+08:00", "utc": "1964-12-31T15:40:28Z", "ms": -157796372413.91135 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-30T21:08:34+08:00", "utc": "1964-12-30T13:08:34Z", "ms": -157891885856.619 }, "end": { "local": "1964-12-31T23:40:28+08:00", "utc": "1964-12-31T15:40:28Z", "ms": -157796372413.91135 } }, "kaala": "pradosha", "days": [ { "local_date": "1964-12-30", "window": { "start": { "local": "1964-12-30T17:44:48+08:00", "utc": "1964-12-30T09:44:48Z", "ms": -157904112060.15588 }, "end": { "local": "1964-12-30T19:38:45+08:00", "utc": "1964-12-30T11:38:45Z", "ms": -157897275170.0091 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1964-12-31", "window": { "start": { "local": "1964-12-31T17:45:32+08:00", "utc": "1964-12-31T09:45:32Z", "ms": -157817668211.25983 }, "end": { "local": "1964-12-31T19:39:25+08:00", "utc": "1964-12-31T11:39:25Z", "ms": -157810835462.38 } }, "covered_min": 114, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:09 on Wed 30 Dec to 23:40 on Thu 31 Dec.", "fact": "1964-12-30T13:08:34Z → 1964-12-31T15:40:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:45–19:39 on the 30th, 17:46–19:39 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 114 minutes on the 30th and 114 of 114 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5389 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Qingyang, 1964: Thursday 31 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-31", "confidence": "determinate" } ], "quote": "In Qingyang, Kṛṣṇa Pradoṣa Vrata 1964 falls on Thursday 31 December. Trayodaśī runs from 21:09 on Wed 30 Dec to 23:40 on Thu 31 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/qingyang/festivals/1964/pradosha-vrata?on=1964-12-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/qingyang/festivals/1964/shivaratri?on=1964-12-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "12359313", "year": 1964, "local_date": "1964-12-31", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2887, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1964-12-31T23:40:28+08:00", "utc": "1964-12-31T15:40:28Z", "ms": -157796372413.91135 }, "end": { "local": "1965-01-02T02:22:20+08:00", "utc": "1965-01-01T18:22:20Z", "ms": -157700259707.56927 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1964-12-31T23:40:28+08:00", "utc": "1964-12-31T15:40:28Z", "ms": -157796372413.91135 }, "end": { "local": "1965-01-02T02:22:20+08:00", "utc": "1965-01-01T18:22:20Z", "ms": -157700259707.56927 } }, "kaala": "nishita", "days": [ { "local_date": "1964-12-31", "window": { "start": { "local": "1965-01-01T00:28:35+08:00", "utc": "1964-12-31T16:28:35Z", "ms": -157793485402.96045 }, "end": { "local": "1965-01-01T01:16:35+08:00", "utc": "1964-12-31T17:16:35Z", "ms": -157790605402.96045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1965-01-01", "window": { "start": { "local": "1965-01-02T00:29:03+08:00", "utc": "1965-01-01T16:29:03Z", "ms": -157707057368.59598 }, "end": { "local": "1965-01-02T01:17:03+08:00", "utc": "1965-01-01T17:17:03Z", "ms": -157704177368.59598 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:40 on Thu 31 Dec to 02:22 on Sat 2 Jan.", "fact": "1964-12-31T15:40:28Z → 1965-01-01T18:22:20Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:29–01:17 on the 31st, 00:29–01:17 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2887 s" }, { "step": "ruling", "text": "Śivarātri, Qingyang, 1964: Thursday 31 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1964-12-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1964-12-31", "confidence": "boundary" } ], "quote": "In Qingyang, Śivarātri 1964 falls on Thursday 31 December. Caturdaśī runs from 23:40 on Thu 31 Dec to 02:22 on Sat 2 Jan and covers all of niśītha that night. It also reaches the next night for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/qingyang/festivals/1964/shivaratri?on=1964-12-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }