{ "id": "/zunyi/festivals/1987", "place": { "id": "1783621", "slug": "zunyi", "name": "Zunyi", "region": "Guizhou, China", "country": "CN", "lat": 27.68667, "lon": 106.90722, "elevation_m": 867, "tz": "Asia/Shanghai" }, "year": 1987, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-01-03", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29973, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-01-03T00:20:16+08:00", "utc": "1987-01-02T16:20:16Z", "ms": 536602815945.6403 }, "end": { "local": "1987-01-03T21:40:10+08:00", "utc": "1987-01-03T13:40:10Z", "ms": 536679609938.2317 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-01-03T00:20:16+08:00", "utc": "1987-01-02T16:20:16Z", "ms": 536602815945.6403 }, "end": { "local": "1987-01-03T21:40:10+08:00", "utc": "1987-01-03T13:40:10Z", "ms": 536679609938.2317 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-01-02", "window": { "start": { "local": "1987-01-02T12:32:09+08:00", "utc": "1987-01-02T04:32:09Z", "ms": 536560328675.782 }, "end": { "local": "1987-01-02T13:20:09+08:00", "utc": "1987-01-02T05:20:09Z", "ms": 536563208675.782 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-01-03", "window": { "start": { "local": "1987-01-03T12:32:37+08:00", "utc": "1987-01-03T04:32:37Z", "ms": 536646757038.3202 }, "end": { "local": "1987-01-03T13:20:37+08:00", "utc": "1987-01-03T05:20:37Z", "ms": 536649637038.3202 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:20 on Sat 3 Jan to 21:40 on Sat 3 Jan.", "fact": "1987-01-02T16:20:16Z → 1987-01-03T13:40:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 2nd, 12:33–13:21 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 29973 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Saturday 3 January.", "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": "1987-01-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-03", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Saturday 3 January. Caturthī runs from 00:20 on Sat 3 Jan to 21:40 on Sat 3 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-01-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-01-10", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26208, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-01-09T22:10:38+08:00", "utc": "1987-01-09T14:10:38Z", "ms": 537199837834.44336 }, "end": { "local": "1987-01-11T00:28:02+08:00", "utc": "1987-01-10T16:28:02Z", "ms": 537294482426.9635 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-01-09T22:10:38+08:00", "utc": "1987-01-09T14:10:38Z", "ms": 537199837834.44336 }, "end": { "local": "1987-01-11T00:28:02+08:00", "utc": "1987-01-10T16:28:02Z", "ms": 537294482426.9635 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-01-10", "window": { "start": { "local": "1987-01-10T07:44:48+08:00", "utc": "1987-01-09T23:44:48Z", "ms": 537234287854.4223 }, "end": { "local": "1987-01-10T07:44:48+08:00", "utc": "1987-01-09T23:44:48Z", "ms": 537234287854.4223 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-01-11", "window": { "start": { "local": "1987-01-11T07:44:50+08:00", "utc": "1987-01-10T23:44:50Z", "ms": 537320690481.1528 }, "end": { "local": "1987-01-11T07:44:50+08:00", "utc": "1987-01-10T23:44:50Z", "ms": 537320690481.1528 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:11 on Fri 9 Jan to 00:28 on Sun 11 Jan.", "fact": "1987-01-09T14:10:38Z → 1987-01-10T16:28:02Z" }, { "step": "kaala", "text": "Sunrise is at 07:45 on the 10th and 07:45 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 10th and is not on the 11th.", "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 26208 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Zunyi, 1987: Saturday 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": "1987-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-10", "confidence": "determinate" } ], "quote": "In Zunyi, Putradā Ekādaśī 1987 falls on Saturday 10 January. Ekādaśī runs from 22:11 on Fri 9 Jan to 00:28 on Sun 11 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-01-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-01-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24918, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-01-12T02:58:38+08:00", "utc": "1987-01-11T18:58:38Z", "ms": 537389918354.29474 }, "end": { "local": "1987-01-13T05:33:24+08:00", "utc": "1987-01-12T21:33:24Z", "ms": 537485604223.75464 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-01-12T02:58:38+08:00", "utc": "1987-01-11T18:58:38Z", "ms": 537389918354.29474 }, "end": { "local": "1987-01-13T05:33:24+08:00", "utc": "1987-01-12T21:33:24Z", "ms": 537485604223.75464 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-01-11", "window": { "start": { "local": "1987-01-11T18:15:25+08:00", "utc": "1987-01-11T10:15:25Z", "ms": 537358524877.55774 }, "end": { "local": "1987-01-11T20:03:20+08:00", "utc": "1987-01-11T12:03:20Z", "ms": 537365000430.9228 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "1987-01-12", "window": { "start": { "local": "1987-01-12T18:16:12+08:00", "utc": "1987-01-12T10:16:12Z", "ms": 537444971641.27563 }, "end": { "local": "1987-01-12T20:04:01+08:00", "utc": "1987-01-12T12:04:01Z", "ms": 537451440888.12195 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:59 on Mon 12 Jan to 05:33 on Tue 13 Jan.", "fact": "1987-01-11T18:58:38Z → 1987-01-12T21:33:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:15–20:03 on the 11th, 18:16–20:04 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 108 minutes on the 11th and 108 of 108 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 24918 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Monday 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": "1987-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-12", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Monday 12 January. Trayodaśī runs from 02:59 on Mon 12 Jan to 05:33 on Tue 13 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2660, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-02-13T06:30:31+08:00", "utc": "1987-02-12T22:30:31Z", "ms": 540167430823.95154 } }, "span": { "of": "transit", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 } }, "kaala": "sunset-day", "days": [ { "local_date": "1987-01-14", "window": { "start": { "local": "1987-01-13T18:16:59+08:00", "utc": "1987-01-13T10:16:59Z", "ms": 537531418762.13257 }, "end": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1987-01-15", "window": { "start": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 }, "end": { "local": "1987-01-15T18:18:34+08:00", "utc": "1987-01-15T10:18:34Z", "ms": 537704313929.6178 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1987-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 17:33 on Wed 14 Jan.", "fact": "1987-01-14T09:33:26Z · 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 18:18, and the day of the 15th ends at 18:19.", "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 13th and the 14th.", "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 2660 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Zunyi, 1987: Tuesday 13 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": "1987-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1987-01-13", "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": "1987-01-13", "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 Zunyi, Bhogi 1987 falls on Tuesday 13 January. It is kept the day before Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 17:33 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2660, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-02-13T06:30:31+08:00", "utc": "1987-02-12T22:30:31Z", "ms": 540167430823.95154 } }, "span": { "of": "transit", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 } }, "kaala": "sunset-day", "days": [ { "local_date": "1987-01-14", "window": { "start": { "local": "1987-01-13T18:16:59+08:00", "utc": "1987-01-13T10:16:59Z", "ms": 537531418762.13257 }, "end": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1987-01-15", "window": { "start": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 }, "end": { "local": "1987-01-15T18:18:34+08:00", "utc": "1987-01-15T10:18:34Z", "ms": 537704313929.6178 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 17:33 on Wed 14 Jan.", "fact": "1987-01-14T09:33:26Z · 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 18:18, and the day of the 15th ends at 18:19.", "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 13th and the 14th.", "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 2660 s" }, { "step": "ruling", "text": "Pongal, Zunyi, 1987: Wednesday 14 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": "1987-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1987-01-14", "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": "1987-01-14", "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 Zunyi, Pongal 1987 falls on Wednesday 14 January. The Sun enters Makara at 17:33 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23194, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-02-13T06:30:31+08:00", "utc": "1987-02-12T22:30:31Z", "ms": 540167430823.95154 } }, "span": { "of": "transit", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 } }, "kaala": "civil-day", "days": [ { "local_date": "1987-01-14", "window": { "start": { "local": "1987-01-14T00:00:00+08:00", "utc": "1987-01-13T16:00:00Z", "ms": 537552000000 }, "end": { "local": "1987-01-15T00:00:00+08:00", "utc": "1987-01-14T16:00:00Z", "ms": 537638400000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1987-01-15", "window": { "start": { "local": "1987-01-15T00:00:00+08:00", "utc": "1987-01-14T16:00:00Z", "ms": 537638400000 }, "end": { "local": "1987-01-16T00:00:00+08:00", "utc": "1987-01-15T16:00:00Z", "ms": 537724800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 17:33 on Wed 14 Jan.", "fact": "1987-01-14T09:33:26Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Zunyi.", "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 23194 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Zunyi, 1987: Wednesday 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": "1987-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1987-01-14", "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": "1987-01-14", "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 Zunyi, Makara Saṅkrānti 1987 falls on Wednesday 14 January. The Sun enters Makara at 17:33 on Wed 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2660, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-02-13T06:30:31+08:00", "utc": "1987-02-12T22:30:31Z", "ms": 540167430823.95154 } }, "span": { "of": "transit", "start": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 }, "end": { "local": "1987-01-14T17:33:26+08:00", "utc": "1987-01-14T09:33:26Z", "ms": 537615206403.7632 } }, "kaala": "sunset-day", "days": [ { "local_date": "1987-01-14", "window": { "start": { "local": "1987-01-13T18:16:59+08:00", "utc": "1987-01-13T10:16:59Z", "ms": 537531418762.13257 }, "end": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1987-01-15", "window": { "start": { "local": "1987-01-14T18:17:46+08:00", "utc": "1987-01-14T10:17:46Z", "ms": 537617866203.4698 }, "end": { "local": "1987-01-15T18:18:34+08:00", "utc": "1987-01-15T10:18:34Z", "ms": 537704313929.6178 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1987-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 17:33 on Wed 14 Jan.", "fact": "1987-01-14T09:33:26Z · 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 18:18, and the day of the 15th ends at 18:19.", "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 13th and the 14th.", "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 2660 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Zunyi, 1987: Thursday 15 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": "1987-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1987-01-15", "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": "1987-01-15", "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 Zunyi, Mattu Pongal 1987 falls on Thursday 15 January. It is kept the day after Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 17:33 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-01-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15409, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-01-18T16:29:51+08:00", "utc": "1987-01-18T08:29:51Z", "ms": 537956991275.2186 }, "end": { "local": "1987-01-19T17:53:17+08:00", "utc": "1987-01-19T09:53:17Z", "ms": 538048396612.7882 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-01-18T16:29:51+08:00", "utc": "1987-01-18T08:29:51Z", "ms": 537956991275.2186 }, "end": { "local": "1987-01-19T17:53:17+08:00", "utc": "1987-01-19T09:53:17Z", "ms": 538048396612.7882 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-01-18", "window": { "start": { "local": "1987-01-18T21:14:58+08:00", "utc": "1987-01-18T13:14:58Z", "ms": 537974097635.1964 }, "end": { "local": "1987-01-18T21:14:58+08:00", "utc": "1987-01-18T13:14:58Z", "ms": 537974097635.1964 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-01-19", "window": { "start": { "local": "1987-01-19T22:10:06+08:00", "utc": "1987-01-19T14:10:06Z", "ms": 538063805606.11945 }, "end": { "local": "1987-01-19T22:10:06+08:00", "utc": "1987-01-19T14:10:06Z", "ms": 538063805606.11945 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:30 on Sun 18 Jan to 17:53 on Mon 19 Jan.", "fact": "1987-01-18T08:29:51Z → 1987-01-19T09:53:17Z" }, { "step": "kaala", "text": "Moonrise is at 21:15 on the 18th and 22:10 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 18th and is not on the 19th.", "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 15409 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Sunday 18 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": "1987-01-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-18", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Sunday 18 January. Caturthī runs from 16:30 on Sun 18 Jan to 17:53 on Mon 19 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-01-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-01-26", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14596, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-01-25T14:31:28+08:00", "utc": "1987-01-25T06:31:28Z", "ms": 538554687973.5515 }, "end": { "local": "1987-01-26T11:45:38+08:00", "utc": "1987-01-26T03:45:38Z", "ms": 538631137727.8375 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-01-25T14:31:28+08:00", "utc": "1987-01-25T06:31:28Z", "ms": 538554687973.5515 }, "end": { "local": "1987-01-26T11:45:38+08:00", "utc": "1987-01-26T03:45:38Z", "ms": 538631137727.8375 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-01-25", "window": { "start": { "local": "1987-01-25T07:42:42+08:00", "utc": "1987-01-24T23:42:42Z", "ms": 538530162440.5256 }, "end": { "local": "1987-01-25T07:42:42+08:00", "utc": "1987-01-24T23:42:42Z", "ms": 538530162440.5256 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-01-26", "window": { "start": { "local": "1987-01-26T07:42:22+08:00", "utc": "1987-01-25T23:42:22Z", "ms": 538616541780.0838 }, "end": { "local": "1987-01-26T07:42:22+08:00", "utc": "1987-01-25T23:42:22Z", "ms": 538616541780.0838 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:31 on Sun 25 Jan to 11:46 on Mon 26 Jan.", "fact": "1987-01-25T06:31:28Z → 1987-01-26T03:45:38Z" }, { "step": "kaala", "text": "Sunrise is at 07:43 on the 25th and 07:42 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "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 14596 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Zunyi, 1987: Monday 26 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": "1987-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-26", "confidence": "determinate" } ], "quote": "In Zunyi, Ṣaṭtilā Ekādaśī 1987 falls on Monday 26 January. Ekādaśī runs from 14:31 on Sun 25 Jan to 11:46 on Mon 26 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-01-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-01-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31601, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-01-27T08:32:23+08:00", "utc": "1987-01-27T00:32:23Z", "ms": 538705942690.2695 }, "end": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-01-27T08:32:23+08:00", "utc": "1987-01-27T00:32:23Z", "ms": 538705942690.2695 }, "end": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-01-26", "window": { "start": { "local": "1987-01-26T18:27:28+08:00", "utc": "1987-01-26T10:27:28Z", "ms": 538655248381.58215 }, "end": { "local": "1987-01-26T20:13:25+08:00", "utc": "1987-01-26T12:13:25Z", "ms": 538661604549.0944 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1987-01-27", "window": { "start": { "local": "1987-01-27T18:28:17+08:00", "utc": "1987-01-27T10:28:17Z", "ms": 538741697026.0098 }, "end": { "local": "1987-01-27T20:14:04+08:00", "utc": "1987-01-27T12:14:04Z", "ms": 538748043559.2689 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:32 on Tue 27 Jan to 05:01 on Wed 28 Jan.", "fact": "1987-01-27T00:32:23Z → 1987-01-27T21:00:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–20:13 on the 26th, 18:28–20:14 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 0 of 106 minutes on the 26th and 106 of 106 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 31601 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Tuesday 27 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": "1987-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-27", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Tuesday 27 January. Trayodaśī runs from 08:32 on Tue 27 Jan to 05:01 on Wed 28 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-01-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3304, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 }, "end": { "local": "1987-01-29T01:21:06+08:00", "utc": "1987-01-28T17:21:06Z", "ms": 538852865669.5135 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 }, "end": { "local": "1987-01-29T01:21:06+08:00", "utc": "1987-01-28T17:21:06Z", "ms": 538852865669.5135 } }, "kaala": "arunodaya", "days": [ { "local_date": "1987-01-28", "window": { "start": { "local": "1987-01-28T05:55:49+08:00", "utc": "1987-01-27T21:55:49Z", "ms": 538782949492.1939 }, "end": { "local": "1987-01-28T07:41:36+08:00", "utc": "1987-01-27T23:41:36Z", "ms": 538789296025.453 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1987-01-29", "window": { "start": { "local": "1987-01-29T05:55:34+08:00", "utc": "1987-01-28T21:55:34Z", "ms": 538869334232.86176 }, "end": { "local": "1987-01-29T07:41:11+08:00", "utc": "1987-01-28T23:41:11Z", "ms": 538875670953.93823 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:01 on Wed 28 Jan to 01:21 on Thu 29 Jan.", "fact": "1987-01-27T21:00:45Z → 1987-01-28T17:21:06Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:56–07:42 on the 28th, 05:56–07:41 on the 29th.", "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 106 of 106 minutes on the 28th and 0 of 106 on the 29th.", "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 3304 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Zunyi, 1987: Wednesday 28 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": "1987-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-28", "confidence": "determinate" } ], "quote": "In Zunyi, Yama Tarpaṇa 1987 falls on Wednesday 28 January. Caturdaśī runs from 05:01 on Wed 28 Jan to 01:21 on Thu 29 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shivaratri?on=1987-01-28", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 483, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 }, "end": { "local": "1987-01-29T01:21:06+08:00", "utc": "1987-01-28T17:21:06Z", "ms": 538852865669.5135 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-01-28T05:00:45+08:00", "utc": "1987-01-27T21:00:45Z", "ms": 538779645030.8361 }, "end": { "local": "1987-01-29T01:21:06+08:00", "utc": "1987-01-28T17:21:06Z", "ms": 538852865669.5135 } }, "kaala": "nishita", "days": [ { "local_date": "1987-01-27", "window": { "start": { "local": "1987-01-28T00:40:57+08:00", "utc": "1987-01-27T16:40:57Z", "ms": 538764056525.73145 }, "end": { "local": "1987-01-28T01:28:57+08:00", "utc": "1987-01-27T17:28:57Z", "ms": 538766936525.73145 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-01-28", "window": { "start": { "local": "1987-01-29T00:41:08+08:00", "utc": "1987-01-28T16:41:08Z", "ms": 538850468249.9014 }, "end": { "local": "1987-01-29T01:29:08+08:00", "utc": "1987-01-28T17:29:08Z", "ms": 538853348249.9014 } }, "covered_min": 40, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:01 on Wed 28 Jan to 01:21 on Thu 29 Jan.", "fact": "1987-01-27T21:00:45Z → 1987-01-28T17:21:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:41–01:29 on the 27th, 00:41–01:29 on the 28th.", "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 27th and 40 of 48 on the 28th.", "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 483 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Wednesday 28 January.", "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": "1987-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-01-28", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Wednesday 28 January. Caturdaśī runs from 05:01 on Wed 28 Jan to 01:21 on Thu 29 Jan and covers 40 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-01-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1359, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-02-01T13:04:41+08:00", "utc": "1987-02-01T05:04:41Z", "ms": 539154280995.9165 }, "end": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-01T13:04:41+08:00", "utc": "1987-02-01T05:04:41Z", "ms": 539154280995.9165 }, "end": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-02-01", "window": { "start": { "local": "1987-02-01T12:42:02+08:00", "utc": "1987-02-01T04:42:02Z", "ms": 539152922435.88556 }, "end": { "local": "1987-02-01T13:30:02+08:00", "utc": "1987-02-01T05:30:02Z", "ms": 539155802435.88556 } }, "covered_min": 25, "window_min": 48, "qualifies": true }, { "local_date": "1987-02-02", "window": { "start": { "local": "1987-02-02T12:42:11+08:00", "utc": "1987-02-02T04:42:11Z", "ms": 539239330771.81915 }, "end": { "local": "1987-02-02T13:30:11+08:00", "utc": "1987-02-02T05:30:11Z", "ms": 539242210771.81915 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb.", "fact": "1987-02-01T05:04:41Z → 1987-02-02T03:27:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 1st, 12:42–13:30 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 25 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "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 1359 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Zunyi, 1987: Sunday 1 February.", "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": "1987-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-01", "confidence": "determinate" } ], "quote": "In Zunyi, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1987 falls on Sunday 1 February. Caturthī runs from 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb and covers 25 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19657, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-02-01T13:04:41+08:00", "utc": "1987-02-01T05:04:41Z", "ms": 539154280995.9165 }, "end": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-01T13:04:41+08:00", "utc": "1987-02-01T05:04:41Z", "ms": 539154280995.9165 }, "end": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-02-01", "window": { "start": { "local": "1987-02-01T18:32:18+08:00", "utc": "1987-02-01T10:32:18Z", "ms": 539173937767.2521 }, "end": { "local": "1987-02-01T20:17:14+08:00", "utc": "1987-02-01T12:17:14Z", "ms": 539180233574.6835 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "1987-02-02", "window": { "start": { "local": "1987-02-02T18:33:05+08:00", "utc": "1987-02-02T10:33:05Z", "ms": 539260385220.65063 }, "end": { "local": "1987-02-02T20:17:50+08:00", "utc": "1987-02-02T12:17:50Z", "ms": 539266670411.6668 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb.", "fact": "1987-02-01T05:04:41Z → 1987-02-02T03:27:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:17 on the 1st, 18:33–20:18 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 105 of 105 minutes on the 1st and 0 of 105 on the 2nd.", "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 19657 s" }, { "step": "ruling", "text": "Tila Caturthī, Zunyi, 1987: Sunday 1 February.", "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": "1987-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-01", "confidence": "determinate" } ], "quote": "In Zunyi, Tila Caturthī 1987 falls on Sunday 1 February. Caturthī runs from 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4478, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "end": { "local": "1987-02-03T10:40:01+08:00", "utc": "1987-02-03T02:40:01Z", "ms": 539318401014.3378 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "end": { "local": "1987-02-03T10:40:01+08:00", "utc": "1987-02-03T02:40:01Z", "ms": 539318401014.3378 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-02-02", "window": { "start": { "local": "1987-02-02T12:42:11+08:00", "utc": "1987-02-02T04:42:11Z", "ms": 539239330771.81915 }, "end": { "local": "1987-02-02T13:30:11+08:00", "utc": "1987-02-02T05:30:11Z", "ms": 539242210771.81915 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-02-03", "window": { "start": { "local": "1987-02-03T12:42:18+08:00", "utc": "1987-02-03T04:42:18Z", "ms": 539325738269.73663 }, "end": { "local": "1987-02-03T13:30:18+08:00", "utc": "1987-02-03T05:30:18Z", "ms": 539328618269.73663 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 11:28 on Mon 2 Feb to 10:40 on Tue 3 Feb.", "fact": "1987-02-02T03:27:33Z → 1987-02-03T02:40:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 2nd, 12:42–13:30 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "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 4478 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Zunyi, 1987: Monday 2 February.", "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": "1987-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-02", "confidence": "determinate" } ], "quote": "In Zunyi, Śrī Pañcamī 1987 falls on Monday 2 February. Pañcamī runs from 11:28 on Mon 2 Feb to 10:40 on Tue 3 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4478, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "end": { "local": "1987-02-03T10:40:01+08:00", "utc": "1987-02-03T02:40:01Z", "ms": 539318401014.3378 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-02T11:27:33+08:00", "utc": "1987-02-02T03:27:33Z", "ms": 539234853217.64825 }, "end": { "local": "1987-02-03T10:40:01+08:00", "utc": "1987-02-03T02:40:01Z", "ms": 539318401014.3378 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-02-02", "window": { "start": { "local": "1987-02-02T12:42:11+08:00", "utc": "1987-02-02T04:42:11Z", "ms": 539239330771.81915 }, "end": { "local": "1987-02-02T13:30:11+08:00", "utc": "1987-02-02T05:30:11Z", "ms": 539242210771.81915 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-02-03", "window": { "start": { "local": "1987-02-03T12:42:18+08:00", "utc": "1987-02-03T04:42:18Z", "ms": 539325738269.73663 }, "end": { "local": "1987-02-03T13:30:18+08:00", "utc": "1987-02-03T05:30:18Z", "ms": 539328618269.73663 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 11:28 on Mon 2 Feb to 10:40 on Tue 3 Feb.", "fact": "1987-02-02T03:27:33Z → 1987-02-03T02:40:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 2nd, 12:42–13:30 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "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 4478 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Zunyi, 1987: Monday 2 February.", "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": "1987-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-02", "confidence": "determinate" } ], "quote": "In Zunyi, Vasanta Pañcamī 1987 falls on Monday 2 February. Pañcamī runs from 11:28 on Mon 2 Feb to 10:40 on Tue 3 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11155, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-02-04T10:44:06+08:00", "utc": "1987-02-04T02:44:06Z", "ms": 539405045991.4949 }, "end": { "local": "1987-02-05T11:37:30+08:00", "utc": "1987-02-05T03:37:30Z", "ms": 539494649838.70233 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-04T10:44:06+08:00", "utc": "1987-02-04T02:44:06Z", "ms": 539405045991.4949 }, "end": { "local": "1987-02-05T11:37:30+08:00", "utc": "1987-02-05T03:37:30Z", "ms": 539494649838.70233 } }, "kaala": "arunodaya", "days": [ { "local_date": "1987-02-04", "window": { "start": { "local": "1987-02-04T05:53:36+08:00", "utc": "1987-02-03T21:53:36Z", "ms": 539387616184.5358 }, "end": { "local": "1987-02-04T07:38:11+08:00", "utc": "1987-02-03T23:38:11Z", "ms": 539393890615.0488 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "1987-02-05", "window": { "start": { "local": "1987-02-05T05:53:12+08:00", "utc": "1987-02-04T21:53:12Z", "ms": 539473992198.3134 }, "end": { "local": "1987-02-05T07:37:36+08:00", "utc": "1987-02-04T23:37:36Z", "ms": 539480255729.6551 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:44 on Wed 4 Feb to 11:37 on Thu 5 Feb.", "fact": "1987-02-04T02:44:06Z → 1987-02-05T03:37:30Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:54–07:38 on the 4th, 05:53–07:38 on the 5th.", "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 0 of 105 minutes on the 4th and 104 of 104 on the 5th.", "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 11155 s" }, { "step": "ruling", "text": "Ratha Saptamī, Zunyi, 1987: Thursday 5 February.", "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": "1987-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-05", "confidence": "determinate" } ], "quote": "In Zunyi, Ratha Saptamī 1987 falls on Thursday 5 February. Saptamī runs from 10:44 on Wed 4 Feb to 11:37 on Thu 5 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-02-09", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36826, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-02-08T17:49:29+08:00", "utc": "1987-02-08T09:49:29Z", "ms": 539776169188.7596 }, "end": { "local": "1987-02-09T20:24:27+08:00", "utc": "1987-02-09T12:24:27Z", "ms": 539871867295.1434 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-08T17:49:29+08:00", "utc": "1987-02-08T09:49:29Z", "ms": 539776169188.7596 }, "end": { "local": "1987-02-09T20:24:27+08:00", "utc": "1987-02-09T12:24:27Z", "ms": 539871867295.1434 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-02-08", "window": { "start": { "local": "1987-02-08T07:35:43+08:00", "utc": "1987-02-07T23:35:43Z", "ms": 539739343222.43634 }, "end": { "local": "1987-02-08T07:35:43+08:00", "utc": "1987-02-07T23:35:43Z", "ms": 539739343222.43634 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-02-09", "window": { "start": { "local": "1987-02-09T07:35:03+08:00", "utc": "1987-02-08T23:35:03Z", "ms": 539825703185.0587 }, "end": { "local": "1987-02-09T07:35:03+08:00", "utc": "1987-02-08T23:35:03Z", "ms": 539825703185.0587 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:49 on Sun 8 Feb to 20:24 on Mon 9 Feb.", "fact": "1987-02-08T09:49:29Z → 1987-02-09T12:24:27Z" }, { "step": "kaala", "text": "Sunrise is at 07:36 on the 8th and 07:35 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 36826 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Zunyi, 1987: Monday 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": "1987-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-09", "confidence": "determinate" } ], "quote": "In Zunyi, Jayā Ekādaśī 1987 falls on Monday 9 February. Ekādaśī runs from 17:49 on Sun 8 Feb to 20:24 on Mon 9 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-02-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24822, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-02-09T20:24:27+08:00", "utc": "1987-02-09T12:24:27Z", "ms": 539871867295.1434 }, "end": { "local": "1987-02-10T22:55:37+08:00", "utc": "1987-02-10T14:55:37Z", "ms": 539967336801.69385 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-09T20:24:27+08:00", "utc": "1987-02-09T12:24:27Z", "ms": 539871867295.1434 }, "end": { "local": "1987-02-10T22:55:37+08:00", "utc": "1987-02-10T14:55:37Z", "ms": 539967336801.69385 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-02-09", "window": { "start": { "local": "1987-02-09T12:42:46+08:00", "utc": "1987-02-09T04:42:46Z", "ms": 539844165791.4841 }, "end": { "local": "1987-02-09T13:30:46+08:00", "utc": "1987-02-09T05:30:46Z", "ms": 539847045791.4841 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-02-10", "window": { "start": { "local": "1987-02-10T12:42:48+08:00", "utc": "1987-02-10T04:42:48Z", "ms": 539930567521.7368 }, "end": { "local": "1987-02-10T13:30:48+08:00", "utc": "1987-02-10T05:30:48Z", "ms": 539933447521.7368 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 20:24 on Mon 9 Feb to 22:56 on Tue 10 Feb.", "fact": "1987-02-09T12:24:27Z → 1987-02-10T14:55:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:43–13:31 on the 9th, 12:43–13:31 on the 10th.", "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 9th and 48 of 48 on the 10th.", "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 24822 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Zunyi, 1987: Tuesday 10 February.", "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": "1987-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-10", "confidence": "determinate" } ], "quote": "In Zunyi, Bhīṣma Dvādaśī 1987 falls on Tuesday 10 February. Dvādaśī runs from 20:24 on Mon 9 Feb to 22:56 on Tue 10 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-02-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9188, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-02-10T22:55:37+08:00", "utc": "1987-02-10T14:55:37Z", "ms": 539967336801.69385 }, "end": { "local": "1987-02-12T01:14:44+08:00", "utc": "1987-02-11T17:14:44Z", "ms": 540062084335.3711 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-10T22:55:37+08:00", "utc": "1987-02-10T14:55:37Z", "ms": 539967336801.69385 }, "end": { "local": "1987-02-12T01:14:44+08:00", "utc": "1987-02-11T17:14:44Z", "ms": 540062084335.3711 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-02-10", "window": { "start": { "local": "1987-02-10T18:39:13+08:00", "utc": "1987-02-10T10:39:13Z", "ms": 539951953120.39307 }, "end": { "local": "1987-02-10T20:22:29+08:00", "utc": "1987-02-10T12:22:29Z", "ms": 539958148632.76074 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "1987-02-11", "window": { "start": { "local": "1987-02-11T18:39:57+08:00", "utc": "1987-02-11T10:39:57Z", "ms": 540038397454.59894 }, "end": { "local": "1987-02-11T20:23:01+08:00", "utc": "1987-02-11T12:23:01Z", "ms": 540044581238.31006 } }, "covered_min": 103, "window_min": 103, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:56 on Tue 10 Feb to 01:15 on Thu 12 Feb.", "fact": "1987-02-10T14:55:37Z → 1987-02-11T17:14:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:22 on the 10th, 18:40–20:23 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 0 of 103 minutes on the 10th and 103 of 103 on the 11th.", "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 9188 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Wednesday 11 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": "1987-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-11", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Wednesday 11 February. Trayodaśī runs from 22:56 on Tue 10 Feb to 01:15 on Thu 12 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-02-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27892, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-02-13T03:16:29+08:00", "utc": "1987-02-12T19:16:29Z", "ms": 540155789499.5946 }, "end": { "local": "1987-02-14T04:57:55+08:00", "utc": "1987-02-13T20:57:55Z", "ms": 540248274901.0801 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1987-02-13T03:16:29+08:00", "utc": "1987-02-12T19:16:29Z", "ms": 540155789499.5946 }, "end": { "local": "1987-02-14T04:57:55+08:00", "utc": "1987-02-13T20:57:55Z", "ms": 540248274901.0801 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-02-13", "window": { "start": { "local": "1987-02-13T12:42:48+08:00", "utc": "1987-02-13T04:42:48Z", "ms": 540189767999.4884 }, "end": { "local": "1987-02-13T13:30:48+08:00", "utc": "1987-02-13T05:30:48Z", "ms": 540192647999.4884 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-02-14", "window": { "start": { "local": "1987-02-14T12:42:47+08:00", "utc": "1987-02-14T04:42:47Z", "ms": 540276166628.27576 }, "end": { "local": "1987-02-14T13:30:47+08:00", "utc": "1987-02-14T05:30:47Z", "ms": 540279046628.27576 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 03:16 on Fri 13 Feb to 04:58 on Sat 14 Feb.", "fact": "1987-02-12T19:16:29Z → 1987-02-13T20:57:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:43–13:31 on the 13th, 12:43–13:31 on the 14th.", "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 13th and 0 of 48 on the 14th.", "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 27892 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Zunyi, 1987: Friday 13 February.", "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": "1987-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-13", "confidence": "determinate" } ], "quote": "In Zunyi, Māghī Pūrṇimā 1987 falls on Friday 13 February. Pūrṇimā runs from 03:16 on Fri 13 Feb to 04:58 on Sat 14 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-02-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36014, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-02-17T07:48:31+08:00", "utc": "1987-02-16T23:48:31Z", "ms": 540517710706.37616 }, "end": { "local": "1987-02-18T07:57:45+08:00", "utc": "1987-02-17T23:57:45Z", "ms": 540604665105.50653 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-02-17T07:48:31+08:00", "utc": "1987-02-16T23:48:31Z", "ms": 540517710706.37616 }, "end": { "local": "1987-02-18T07:57:45+08:00", "utc": "1987-02-17T23:57:45Z", "ms": 540604665105.50653 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-02-16", "window": { "start": { "local": "1987-02-16T21:00:59+08:00", "utc": "1987-02-16T13:00:59Z", "ms": 540478858616.03595 }, "end": { "local": "1987-02-16T21:00:59+08:00", "utc": "1987-02-16T13:00:59Z", "ms": 540478858616.03595 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-02-17", "window": { "start": { "local": "1987-02-17T21:57:31+08:00", "utc": "1987-02-17T13:57:31Z", "ms": 540568650970.1265 }, "end": { "local": "1987-02-17T21:57:31+08:00", "utc": "1987-02-17T13:57:31Z", "ms": 540568650970.1265 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:49 on Tue 17 Feb to 07:58 on Wed 18 Feb.", "fact": "1987-02-16T23:48:31Z → 1987-02-17T23:57:45Z" }, { "step": "kaala", "text": "Moonrise is at 21:01 on the 16th and 21:58 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 16th and is on the 17th.", "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 36014 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Tuesday 17 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": "1987-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-17", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Tuesday 17 February. Caturthī runs from 07:49 on Tue 17 Feb to 07:58 on Wed 18 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-02-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-02-24", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28876, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-02-23T23:21:35+08:00", "utc": "1987-02-23T15:21:35Z", "ms": 541092095434.7887 }, "end": { "local": "1987-02-24T20:32:15+08:00", "utc": "1987-02-24T12:32:15Z", "ms": 541168335260.86206 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-02-23T23:21:35+08:00", "utc": "1987-02-23T15:21:35Z", "ms": 541092095434.7887 }, "end": { "local": "1987-02-24T20:32:15+08:00", "utc": "1987-02-24T12:32:15Z", "ms": 541168335260.86206 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-02-24", "window": { "start": { "local": "1987-02-24T07:22:51+08:00", "utc": "1987-02-23T23:22:51Z", "ms": 541120971237.86957 }, "end": { "local": "1987-02-24T07:22:51+08:00", "utc": "1987-02-23T23:22:51Z", "ms": 541120971237.86957 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-02-25", "window": { "start": { "local": "1987-02-25T07:21:55+08:00", "utc": "1987-02-24T23:21:55Z", "ms": 541207314964.88873 }, "end": { "local": "1987-02-25T07:21:55+08:00", "utc": "1987-02-24T23:21:55Z", "ms": 541207314964.88873 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:22 on Mon 23 Feb to 20:32 on Tue 24 Feb.", "fact": "1987-02-23T15:21:35Z → 1987-02-24T12:32:15Z" }, { "step": "kaala", "text": "Sunrise is at 07:23 on the 24th and 07:22 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 24th and is not 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 28876 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Zunyi, 1987: Tuesday 24 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": "1987-02-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-24", "confidence": "determinate" } ], "quote": "In Zunyi, Vijayā Ekādaśī 1987 falls on Tuesday 24 February. Ekādaśī runs from 23:22 on Mon 23 Feb to 20:32 on Tue 24 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-02-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-02-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4656, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-02-25T17:32:01+08:00", "utc": "1987-02-25T09:32:01Z", "ms": 541243920893.18744 }, "end": { "local": "1987-02-26T14:28:59+08:00", "utc": "1987-02-26T06:28:59Z", "ms": 541319339155.51984 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-02-25T17:32:01+08:00", "utc": "1987-02-25T09:32:01Z", "ms": 541243920893.18744 }, "end": { "local": "1987-02-26T14:28:59+08:00", "utc": "1987-02-26T06:28:59Z", "ms": 541319339155.51984 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-02-25", "window": { "start": { "local": "1987-02-25T18:49:37+08:00", "utc": "1987-02-25T10:49:37Z", "ms": 541248576877.1379 }, "end": { "local": "1987-02-25T20:29:48+08:00", "utc": "1987-02-25T12:29:48Z", "ms": 541254587681.9264 } }, "covered_min": 100, "window_min": 100, "qualifies": true }, { "local_date": "1987-02-26", "window": { "start": { "local": "1987-02-26T18:50:15+08:00", "utc": "1987-02-26T10:50:15Z", "ms": 541335015388.0966 }, "end": { "local": "1987-02-26T20:30:13+08:00", "utc": "1987-02-26T12:30:13Z", "ms": 541341013350.6493 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:32 on Wed 25 Feb to 14:29 on Thu 26 Feb.", "fact": "1987-02-25T09:32:01Z → 1987-02-26T06:28:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:50–20:30 on the 25th, 18:50–20:30 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 100 of 100 minutes on the 25th and 0 of 100 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 4656 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Wednesday 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": "1987-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-25", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Wednesday 25 February. Trayodaśī runs from 17:32 on Wed 25 Feb to 14:29 on Thu 26 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-02-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36178, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-02-26T14:28:59+08:00", "utc": "1987-02-26T06:28:59Z", "ms": 541319339155.51984 }, "end": { "local": "1987-02-27T11:32:06+08:00", "utc": "1987-02-27T03:32:06Z", "ms": 541395125735.52167 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-02-26T14:28:59+08:00", "utc": "1987-02-26T06:28:59Z", "ms": 541319339155.51984 }, "end": { "local": "1987-02-27T11:32:06+08:00", "utc": "1987-02-27T03:32:06Z", "ms": 541395125735.52167 } }, "kaala": "nishita", "days": [ { "local_date": "1987-02-25", "window": { "start": { "local": "1987-02-26T00:41:17+08:00", "utc": "1987-02-25T16:41:17Z", "ms": 541269677395.0947 }, "end": { "local": "1987-02-26T01:29:17+08:00", "utc": "1987-02-25T17:29:17Z", "ms": 541272557395.0947 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-02-26", "window": { "start": { "local": "1987-02-27T00:41:08+08:00", "utc": "1987-02-26T16:41:08Z", "ms": 541356067747.6692 }, "end": { "local": "1987-02-27T01:29:08+08:00", "utc": "1987-02-26T17:29:08Z", "ms": 541358947747.6692 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:29 on Thu 26 Feb to 11:32 on Fri 27 Feb.", "fact": "1987-02-26T06:28:59Z → 1987-02-27T03:32:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:41–01:29 on the 25th, 00:41–01:29 on the 26th.", "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 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 night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 36178 s" }, { "step": "ruling", "text": "Mahāśivarātri, Zunyi, 1987: Thursday 26 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": "1987-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-02-26", "confidence": "determinate" } ], "quote": "In Zunyi, Mahāśivarātri 1987 falls on Thursday 26 February. Caturdaśī runs from 14:29 on Thu 26 Feb to 11:32 on Fri 27 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-03-03", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32064, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-03-03T03:46:18+08:00", "utc": "1987-03-02T19:46:18Z", "ms": 541712777790.6446 }, "end": { "local": "1987-03-04T03:27:18+08:00", "utc": "1987-03-03T19:27:18Z", "ms": 541798038094.1756 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-03-03T03:46:18+08:00", "utc": "1987-03-02T19:46:18Z", "ms": 541712777790.6446 }, "end": { "local": "1987-03-04T03:27:18+08:00", "utc": "1987-03-03T19:27:18Z", "ms": 541798038094.1756 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-03-03", "window": { "start": { "local": "1987-03-03T12:40:42+08:00", "utc": "1987-03-03T04:40:42Z", "ms": 541744842078.5736 }, "end": { "local": "1987-03-03T13:28:42+08:00", "utc": "1987-03-03T05:28:42Z", "ms": 541747722078.5736 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-03-04", "window": { "start": { "local": "1987-03-04T12:40:30+08:00", "utc": "1987-03-04T04:40:30Z", "ms": 541831229617.73773 }, "end": { "local": "1987-03-04T13:28:30+08:00", "utc": "1987-03-04T05:28:30Z", "ms": 541834109617.73773 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:46 on Tue 3 Mar to 03:27 on Wed 4 Mar.", "fact": "1987-03-02T19:46:18Z → 1987-03-03T19:27:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 3rd, 12:40–13:28 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "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 32064 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Tuesday 3 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": "1987-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-03", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Tuesday 3 March. Caturthī runs from 03:46 on Tue 3 Mar to 03:27 on Wed 4 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-03-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-03-11", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24961, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-03-10T14:04:43+08:00", "utc": "1987-03-10T06:04:43Z", "ms": 542354682522.4425 }, "end": { "local": "1987-03-11T16:21:28+08:00", "utc": "1987-03-11T08:21:28Z", "ms": 542449288295.97797 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-03-10T14:04:43+08:00", "utc": "1987-03-10T06:04:43Z", "ms": 542354682522.4425 }, "end": { "local": "1987-03-11T16:21:28+08:00", "utc": "1987-03-11T08:21:28Z", "ms": 542449288295.97797 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-03-10", "window": { "start": { "local": "1987-03-10T07:08:42+08:00", "utc": "1987-03-09T23:08:42Z", "ms": 542329721755.1904 }, "end": { "local": "1987-03-10T07:08:42+08:00", "utc": "1987-03-09T23:08:42Z", "ms": 542329721755.1904 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-03-11", "window": { "start": { "local": "1987-03-11T07:07:37+08:00", "utc": "1987-03-10T23:07:37Z", "ms": 542416056934.99 }, "end": { "local": "1987-03-11T07:07:37+08:00", "utc": "1987-03-10T23:07:37Z", "ms": 542416056934.99 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:05 on Tue 10 Mar to 16:21 on Wed 11 Mar.", "fact": "1987-03-10T06:04:43Z → 1987-03-11T08:21:28Z" }, { "step": "kaala", "text": "Sunrise is at 07:09 on the 10th and 07:08 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "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 24961 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Zunyi, 1987: Wednesday 11 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": "1987-03-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-11", "confidence": "determinate" } ], "quote": "In Zunyi, Āmalakī Ekādaśī 1987 falls on Wednesday 11 March. Ekādaśī runs from 14:05 on Tue 10 Mar to 16:21 on Wed 11 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-03-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-03-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-12", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2488, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-03-12T18:17:08+08:00", "utc": "1987-03-12T10:17:08Z", "ms": 542542628495.55676 }, "end": { "local": "1987-03-13T19:45:43+08:00", "utc": "1987-03-13T11:45:43Z", "ms": 542634342853.85944 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-03-12T18:17:08+08:00", "utc": "1987-03-12T10:17:08Z", "ms": 542542628495.55676 }, "end": { "local": "1987-03-13T19:45:43+08:00", "utc": "1987-03-13T11:45:43Z", "ms": 542634342853.85944 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-03-12", "window": { "start": { "local": "1987-03-12T18:58:37+08:00", "utc": "1987-03-12T10:58:37Z", "ms": 542545116886.171 }, "end": { "local": "1987-03-12T20:35:31+08:00", "utc": "1987-03-12T12:35:31Z", "ms": 542550931451.0671 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "1987-03-13", "window": { "start": { "local": "1987-03-13T18:59:10+08:00", "utc": "1987-03-13T10:59:10Z", "ms": 542631550348.0201 }, "end": { "local": "1987-03-13T20:35:52+08:00", "utc": "1987-03-13T12:35:52Z", "ms": 542637351660.3397 } }, "covered_min": 47, "window_min": 97, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:17 on Thu 12 Mar to 19:46 on Fri 13 Mar.", "fact": "1987-03-12T10:17:08Z → 1987-03-13T11:45:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:59–20:36 on the 12th, 18:59–20:36 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 12th and 47 of 97 on the 13th.", "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 2488 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Thursday 12 March.", "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": "1987-03-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-12", "confidence": "boundary" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Thursday 12 March. Trayodaśī runs from 18:17 on Thu 12 Mar to 19:46 on Fri 13 Mar and covers all of pradoṣa that evening. It also reaches the next evening for 47 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/zunyi/festivals/1987/pradosha-vrata?on=1987-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6277, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-03-14T20:44:20+08:00", "utc": "1987-03-14T12:44:20Z", "ms": 542724260347.7416 }, "end": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-03-14T20:44:20+08:00", "utc": "1987-03-14T12:44:20Z", "ms": 542724260347.7416 }, "end": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 } }, "kaala": "sayahna", "days": [ { "local_date": "1987-03-14", "window": { "start": { "local": "1987-03-14T16:36:39+08:00", "utc": "1987-03-14T08:36:39Z", "ms": 542709398888.29565 }, "end": { "local": "1987-03-14T18:59:44+08:00", "utc": "1987-03-14T10:59:44Z", "ms": 542717983562.7652 } }, "covered_min": 0, "window_min": 143, "qualifies": false }, { "local_date": "1987-03-15", "window": { "start": { "local": "1987-03-15T16:36:52+08:00", "utc": "1987-03-15T08:36:52Z", "ms": 542795812026.8842 }, "end": { "local": "1987-03-15T19:00:17+08:00", "utc": "1987-03-15T11:00:17Z", "ms": 542804416546.8906 } }, "covered_min": 143, "window_min": 143, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 20:44 on Sat 14 Mar to 21:13 on Sun 15 Mar.", "fact": "1987-03-14T12:44:20Z → 1987-03-15T13:12:41Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:37–19:00 on the 14th, 16:37–19:00 on the 15th.", "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 143 minutes on the 14th and 143 of 143 on the 15th.", "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 6277 s" }, { "step": "ruling", "text": "Holikā Dahana, Zunyi, 1987: Sunday 15 March.", "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": "1987-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-15", "confidence": "determinate" } ], "quote": "In Zunyi, Holikā Dahana 1987 falls on Sunday 15 March. Pūrṇimā runs from 20:44 on Sat 14 Mar to 21:13 on Sun 15 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6277, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-03-14T20:44:20+08:00", "utc": "1987-03-14T12:44:20Z", "ms": 542724260347.7416 }, "end": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1987-03-14T20:44:20+08:00", "utc": "1987-03-14T12:44:20Z", "ms": 542724260347.7416 }, "end": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 } }, "kaala": "sayahna", "days": [ { "local_date": "1987-03-14", "window": { "start": { "local": "1987-03-14T16:36:39+08:00", "utc": "1987-03-14T08:36:39Z", "ms": 542709398888.29565 }, "end": { "local": "1987-03-14T18:59:44+08:00", "utc": "1987-03-14T10:59:44Z", "ms": 542717983562.7652 } }, "covered_min": 0, "window_min": 143, "qualifies": false }, { "local_date": "1987-03-15", "window": { "start": { "local": "1987-03-15T16:36:52+08:00", "utc": "1987-03-15T08:36:52Z", "ms": 542795812026.8842 }, "end": { "local": "1987-03-15T19:00:17+08:00", "utc": "1987-03-15T11:00:17Z", "ms": 542804416546.8906 } }, "covered_min": 143, "window_min": 143, "qualifies": true } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1987-03-15", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 20:44 on Sat 14 Mar to 21:13 on Sun 15 Mar.", "fact": "1987-03-14T12:44:20Z → 1987-03-15T13:12:41Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:37–19:00 on the 14th, 16:37–19:00 on the 15th.", "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 143 minutes on the 14th and 143 of 143 on the 15th.", "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 6277 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Sunday 15 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Zunyi, 1987: Monday 16 March.", "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": "1987-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-16", "confidence": "determinate" } ], "quote": "In Zunyi, Holī 1987 falls on Monday 16 March. It is kept the day after Holikā Dahana, which falls on Sunday 15 March. Pūrṇimā runs from 20:44 on Sat 14 Mar to 21:13 on Sun 15 Mar and covers all of sāyāhna on the 15th.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35332, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 }, "end": { "local": "1987-03-16T21:12:08+08:00", "utc": "1987-03-16T13:12:08Z", "ms": 542898728187.35126 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-15T21:12:41+08:00", "utc": "1987-03-15T13:12:41Z", "ms": 542812361113.05664 }, "end": { "local": "1987-03-16T21:12:08+08:00", "utc": "1987-03-16T13:12:08Z", "ms": 542898728187.35126 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-03-16", "window": { "start": { "local": "1987-03-16T07:02:07+08:00", "utc": "1987-03-15T23:02:07Z", "ms": 542847727422.2527 }, "end": { "local": "1987-03-16T07:02:07+08:00", "utc": "1987-03-15T23:02:07Z", "ms": 542847727422.2527 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-03-17", "window": { "start": { "local": "1987-03-17T07:01:01+08:00", "utc": "1987-03-16T23:01:01Z", "ms": 542934060646.69604 }, "end": { "local": "1987-03-17T07:01:01+08:00", "utc": "1987-03-16T23:01:01Z", "ms": 542934060646.69604 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:13 on Sun 15 Mar to 21:12 on Mon 16 Mar.", "fact": "1987-03-15T13:12:41Z → 1987-03-16T13:12:08Z" }, { "step": "kaala", "text": "Sunrise is at 07:02 on the 16th and 07:01 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is on the 16th and is not 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: purvaviddha → only-day · margin 35332 s" }, { "step": "ruling", "text": "Vasantotsava, Zunyi, 1987: Monday 16 March.", "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": "1987-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-16", "confidence": "determinate" } ], "quote": "In Zunyi, Vasantotsava 1987 falls on Monday 16 March. Pratipadā runs from 21:13 on Sun 15 Mar to 21:12 on Mon 16 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-03-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6962, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-03-18T19:54:08+08:00", "utc": "1987-03-18T11:54:08Z", "ms": 543066847943.12317 }, "end": { "local": "1987-03-19T18:42:10+08:00", "utc": "1987-03-19T10:42:10Z", "ms": 543148930124.5846 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-18T19:54:08+08:00", "utc": "1987-03-18T11:54:08Z", "ms": 543066847943.12317 }, "end": { "local": "1987-03-19T18:42:10+08:00", "utc": "1987-03-19T10:42:10Z", "ms": 543148930124.5846 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-03-18", "window": { "start": { "local": "1987-03-18T21:50:10+08:00", "utc": "1987-03-18T13:50:10Z", "ms": 543073809867.7638 }, "end": { "local": "1987-03-18T21:50:10+08:00", "utc": "1987-03-18T13:50:10Z", "ms": 543073809867.7638 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-03-19", "window": { "start": { "local": "1987-03-19T22:54:31+08:00", "utc": "1987-03-19T14:54:31Z", "ms": 543164070651.15326 }, "end": { "local": "1987-03-19T22:54:31+08:00", "utc": "1987-03-19T14:54:31Z", "ms": 543164070651.15326 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:54 on Wed 18 Mar to 18:42 on Thu 19 Mar.", "fact": "1987-03-18T11:54:08Z → 1987-03-19T10:42:10Z" }, { "step": "kaala", "text": "Moonrise is at 21:50 on the 18th and 22:55 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 18th and is not on the 19th.", "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 6962 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Wednesday 18 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": "1987-03-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-18", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Wednesday 18 March. Caturthī runs from 19:54 on Wed 18 Mar to 18:42 on Thu 19 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-03-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-23", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 120, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-03-22T13:25:43+08:00", "utc": "1987-03-22T05:25:43Z", "ms": 543389143281.7502 }, "end": { "local": "1987-03-23T11:15:19+08:00", "utc": "1987-03-23T03:15:19Z", "ms": 543467719166.0889 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-22T13:25:43+08:00", "utc": "1987-03-22T05:25:43Z", "ms": 543389143281.7502 }, "end": { "local": "1987-03-23T11:15:19+08:00", "utc": "1987-03-23T03:15:19Z", "ms": 543467719166.0889 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-03-22", "window": { "start": { "local": "1987-03-22T12:35:43+08:00", "utc": "1987-03-22T04:35:43Z", "ms": 543386143250.35034 }, "end": { "local": "1987-03-22T13:23:43+08:00", "utc": "1987-03-22T05:23:43Z", "ms": 543389023250.35034 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-03-23", "window": { "start": { "local": "1987-03-23T12:35:25+08:00", "utc": "1987-03-23T04:35:25Z", "ms": 543472525302.57336 }, "end": { "local": "1987-03-23T13:23:25+08:00", "utc": "1987-03-23T05:23:25Z", "ms": 543475405302.57336 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:26 on Sun 22 Mar to 11:15 on Mon 23 Mar.", "fact": "1987-03-22T05:25:43Z → 1987-03-23T03:15:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:36–13:24 on the 22nd, 12:35–13:23 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 120 s < 300 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Zunyi, 1987: Monday 23 March.", "fact": "confidence: boundary (margin)" } ], "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": "1987-03-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-22", "confidence": "determinate" } ], "quote": "In Zunyi, Śītalāṣṭamī 1987 falls on Monday 23 March. Aṣṭamī runs from 13:26 on Sun 22 Mar to 11:15 on Mon 23 Mar, and reaches madhyāhna on neither day. It is 2 min 00 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-03-25", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 979, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-03-25T06:35:42+08:00", "utc": "1987-03-24T22:35:42Z", "ms": 543623741672.62006 }, "end": { "local": "1987-03-26T04:14:37+08:00", "utc": "1987-03-25T20:14:37Z", "ms": 543701676907.62024 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-25T06:35:42+08:00", "utc": "1987-03-24T22:35:42Z", "ms": 543623741672.62006 }, "end": { "local": "1987-03-26T04:14:37+08:00", "utc": "1987-03-25T20:14:37Z", "ms": 543701676907.62024 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-03-25", "window": { "start": { "local": "1987-03-25T06:52:01+08:00", "utc": "1987-03-24T22:52:01Z", "ms": 543624720980.47 }, "end": { "local": "1987-03-25T06:52:01+08:00", "utc": "1987-03-24T22:52:01Z", "ms": 543624720980.47 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-03-26", "window": { "start": { "local": "1987-03-26T06:50:53+08:00", "utc": "1987-03-25T22:50:53Z", "ms": 543711053271.05554 }, "end": { "local": "1987-03-26T06:50:53+08:00", "utc": "1987-03-25T22:50:53Z", "ms": 543711053271.05554 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:36 on Wed 25 Mar to 04:15 on Thu 26 Mar.", "fact": "1987-03-24T22:35:42Z → 1987-03-25T20:14:37Z" }, { "step": "kaala", "text": "Sunrise is at 06:52 on the 25th and 06:51 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "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 979 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Zunyi, 1987: Wednesday 25 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": "1987-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-25", "confidence": "determinate" } ], "quote": "In Zunyi, Pāpamocanī Ekādaśī 1987 falls on Wednesday 25 March. Ekādaśī runs from 06:36 on Wed 25 Mar to 04:15 on Thu 26 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-03-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-03-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11698, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-03-27T01:59:14+08:00", "utc": "1987-03-26T17:59:14Z", "ms": 543779954466.84784 }, "end": { "local": "1987-03-27T23:55:14+08:00", "utc": "1987-03-27T15:55:14Z", "ms": 543858913874.21906 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-27T01:59:14+08:00", "utc": "1987-03-26T17:59:14Z", "ms": 543779954466.84784 }, "end": { "local": "1987-03-27T23:55:14+08:00", "utc": "1987-03-27T15:55:14Z", "ms": 543858913874.21906 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-03-26", "window": { "start": { "local": "1987-03-26T19:06:09+08:00", "utc": "1987-03-26T11:06:09Z", "ms": 543755169017.41144 }, "end": { "local": "1987-03-26T20:39:58+08:00", "utc": "1987-03-26T12:39:58Z", "ms": 543760797894.55707 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1987-03-27", "window": { "start": { "local": "1987-03-27T19:06:40+08:00", "utc": "1987-03-27T11:06:40Z", "ms": 543841600498.51483 }, "end": { "local": "1987-03-27T20:40:16+08:00", "utc": "1987-03-27T12:40:16Z", "ms": 543847216162.7483 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:59 on Fri 27 Mar to 23:55 on Fri 27 Mar.", "fact": "1987-03-26T17:59:14Z → 1987-03-27T15:55:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:06–20:40 on the 26th, 19:07–20:40 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 0 of 94 minutes on the 26th and 94 of 94 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 11698 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Friday 27 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": "1987-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-27", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Friday 27 March. Trayodaśī runs from 01:59 on Fri 27 Mar to 23:55 on Fri 27 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-03-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2305, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-03-27T23:55:14+08:00", "utc": "1987-03-27T15:55:14Z", "ms": 543858913874.21906 }, "end": { "local": "1987-03-28T22:08:38+08:00", "utc": "1987-03-28T14:08:38Z", "ms": 543938917641.8503 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-27T23:55:14+08:00", "utc": "1987-03-27T15:55:14Z", "ms": 543858913874.21906 }, "end": { "local": "1987-03-28T22:08:38+08:00", "utc": "1987-03-28T14:08:38Z", "ms": 543938917641.8503 } }, "kaala": "nishita", "days": [ { "local_date": "1987-03-27", "window": { "start": { "local": "1987-03-28T00:33:39+08:00", "utc": "1987-03-27T16:33:39Z", "ms": 543861219239.3904 }, "end": { "local": "1987-03-28T01:21:39+08:00", "utc": "1987-03-27T17:21:39Z", "ms": 543864099239.3904 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-03-28", "window": { "start": { "local": "1987-03-29T00:33:21+08:00", "utc": "1987-03-28T16:33:21Z", "ms": 543947601190.4303 }, "end": { "local": "1987-03-29T01:21:21+08:00", "utc": "1987-03-28T17:21:21Z", "ms": 543950481190.4303 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:55 on Fri 27 Mar to 22:09 on Sat 28 Mar.", "fact": "1987-03-27T15:55:14Z → 1987-03-28T14:08:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:34–01:22 on the 27th, 00:33–01:21 on the 28th.", "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 27th and 0 of 48 on the 28th.", "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 2305 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Friday 27 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": "1987-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-27", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Friday 27 March. Caturdaśī runs from 23:55 on Fri 27 Mar to 22:09 on Sat 28 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23427, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-03-29T20:45:33+08:00", "utc": "1987-03-29T12:45:33Z", "ms": 544020332950.5154 }, "end": { "local": "1987-03-30T19:51:46+08:00", "utc": "1987-03-30T11:51:46Z", "ms": 544103505582.98785 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-29T20:45:33+08:00", "utc": "1987-03-29T12:45:33Z", "ms": 544020332950.5154 }, "end": { "local": "1987-03-30T19:51:46+08:00", "utc": "1987-03-30T11:51:46Z", "ms": 544103505582.98785 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-03-29", "window": { "start": { "local": "1987-03-29T12:33:37+08:00", "utc": "1987-03-29T04:33:37Z", "ms": 543990816887.84 }, "end": { "local": "1987-03-29T13:21:37+08:00", "utc": "1987-03-29T05:21:37Z", "ms": 543993696887.84 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-03-30", "window": { "start": { "local": "1987-03-30T12:33:19+08:00", "utc": "1987-03-30T04:33:19Z", "ms": 544077198857.2637 }, "end": { "local": "1987-03-30T13:21:19+08:00", "utc": "1987-03-30T05:21:19Z", "ms": 544080078857.2637 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:46 on Sun 29 Mar to 19:52 on Mon 30 Mar.", "fact": "1987-03-29T12:45:33Z → 1987-03-30T11:51:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:34–13:22 on the 29th, 12:33–13:21 on the 30th.", "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 29th and 48 of 48 on the 30th.", "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 23427 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Zunyi, 1987: Monday 30 March.", "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": "1987-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-03-30", "confidence": "determinate" } ], "quote": "In Zunyi, Navarātrārambha (Caitra) (Chaitra Navratri) 1987 falls on Monday 30 March. Pratipadā runs from 20:46 on Sun 29 Mar to 19:52 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22264, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-03-31T19:32:05+08:00", "utc": "1987-03-31T11:32:05Z", "ms": 544188724955.86346 }, "end": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-31T19:32:05+08:00", "utc": "1987-03-31T11:32:05Z", "ms": 544188724955.86346 }, "end": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-03-31", "window": { "start": { "local": "1987-03-31T12:33:01+08:00", "utc": "1987-03-31T04:33:01Z", "ms": 544163580880.52734 }, "end": { "local": "1987-03-31T13:21:01+08:00", "utc": "1987-03-31T05:21:01Z", "ms": 544166460880.52734 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-04-01", "window": { "start": { "local": "1987-04-01T12:32:43+08:00", "utc": "1987-04-01T04:32:43Z", "ms": 544249962973.6038 }, "end": { "local": "1987-04-01T13:20:43+08:00", "utc": "1987-04-01T05:20:43Z", "ms": 544252842973.6038 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr.", "fact": "1987-03-31T11:32:05Z → 1987-04-01T11:49:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 31st, 12:33–13:21 on the 1st.", "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 31st and 48 of 48 on the 1st.", "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 22264 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Zunyi, 1987: Wednesday 1 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": "1987-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-01", "confidence": "determinate" } ], "quote": "In Zunyi, Gaurī Tṛtīyā (Gangaur) 1987 falls on Wednesday 1 April. Tṛtīyā runs from 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22264, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-03-31T19:32:05+08:00", "utc": "1987-03-31T11:32:05Z", "ms": 544188724955.86346 }, "end": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-03-31T19:32:05+08:00", "utc": "1987-03-31T11:32:05Z", "ms": 544188724955.86346 }, "end": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-03-31", "window": { "start": { "local": "1987-03-31T12:33:01+08:00", "utc": "1987-03-31T04:33:01Z", "ms": 544163580880.52734 }, "end": { "local": "1987-03-31T13:21:01+08:00", "utc": "1987-03-31T05:21:01Z", "ms": 544166460880.52734 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-04-01", "window": { "start": { "local": "1987-04-01T12:32:43+08:00", "utc": "1987-04-01T04:32:43Z", "ms": 544249962973.6038 }, "end": { "local": "1987-04-01T13:20:43+08:00", "utc": "1987-04-01T05:20:43Z", "ms": 544252842973.6038 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr.", "fact": "1987-03-31T11:32:05Z → 1987-04-01T11:49:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 31st, 12:33–13:21 on the 1st.", "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 31st and 48 of 48 on the 1st.", "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 22264 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Zunyi, 1987: Wednesday 1 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": "1987-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-01", "confidence": "determinate" } ], "quote": "In Zunyi, Saubhāgya Śayana Vrata 1987 falls on Wednesday 1 April. Tṛtīyā runs from 19:32 on Tue 31 Mar to 19:50 on Wed 1 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-04-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23337, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 }, "end": { "local": "1987-04-02T20:45:11+08:00", "utc": "1987-04-02T12:45:11Z", "ms": 544365911329.8188 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-01T19:49:40+08:00", "utc": "1987-04-01T11:49:40Z", "ms": 544276180302.8954 }, "end": { "local": "1987-04-02T20:45:11+08:00", "utc": "1987-04-02T12:45:11Z", "ms": 544365911329.8188 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-01", "window": { "start": { "local": "1987-04-01T12:32:43+08:00", "utc": "1987-04-01T04:32:43Z", "ms": 544249962973.6038 }, "end": { "local": "1987-04-01T13:20:43+08:00", "utc": "1987-04-01T05:20:43Z", "ms": 544252842973.6038 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-04-02", "window": { "start": { "local": "1987-04-02T12:32:25+08:00", "utc": "1987-04-02T04:32:25Z", "ms": 544336345152.7439 }, "end": { "local": "1987-04-02T13:20:25+08:00", "utc": "1987-04-02T05:20:25Z", "ms": 544339225152.7439 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:50 on Wed 1 Apr to 20:45 on Thu 2 Apr.", "fact": "1987-04-01T11:49:40Z → 1987-04-02T12:45:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 1st, 12:32–13:20 on the 2nd.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23337 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Thursday 2 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": "1987-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-02", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Thursday 2 April. Caturthī runs from 19:50 on Wed 1 Apr to 20:45 on Thu 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-04-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26686, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-04-02T20:45:11+08:00", "utc": "1987-04-02T12:45:11Z", "ms": 544365911329.8188 }, "end": { "local": "1987-04-03T22:16:02+08:00", "utc": "1987-04-03T14:16:02Z", "ms": 544457762188.17017 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-02T20:45:11+08:00", "utc": "1987-04-02T12:45:11Z", "ms": 544365911329.8188 }, "end": { "local": "1987-04-03T22:16:02+08:00", "utc": "1987-04-03T14:16:02Z", "ms": 544457762188.17017 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-02", "window": { "start": { "local": "1987-04-02T12:32:25+08:00", "utc": "1987-04-02T04:32:25Z", "ms": 544336345152.7439 }, "end": { "local": "1987-04-02T13:20:25+08:00", "utc": "1987-04-02T05:20:25Z", "ms": 544339225152.7439 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-04-03", "window": { "start": { "local": "1987-04-03T12:32:07+08:00", "utc": "1987-04-03T04:32:07Z", "ms": 544422727434.85614 }, "end": { "local": "1987-04-03T13:20:07+08:00", "utc": "1987-04-03T05:20:07Z", "ms": 544425607434.85614 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:45 on Thu 2 Apr to 22:16 on Fri 3 Apr.", "fact": "1987-04-02T12:45:11Z → 1987-04-03T14:16:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 2nd, 12:32–13:20 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 26686 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Zunyi, 1987: Friday 3 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": "1987-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-03", "confidence": "determinate" } ], "quote": "In Zunyi, Lakṣmī Pañcamī 1987 falls on Friday 3 April. Pañcamī runs from 20:45 on Thu 2 Apr to 22:16 on Fri 3 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27033, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-04-06T02:34:52+08:00", "utc": "1987-04-05T18:34:52Z", "ms": 544646092372.3799 }, "end": { "local": "1987-04-07T05:00:25+08:00", "utc": "1987-04-06T21:00:25Z", "ms": 544741225056.3164 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-06T02:34:52+08:00", "utc": "1987-04-05T18:34:52Z", "ms": 544646092372.3799 }, "end": { "local": "1987-04-07T05:00:25+08:00", "utc": "1987-04-06T21:00:25Z", "ms": 544741225056.3164 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-06", "window": { "start": { "local": "1987-04-06T12:31:15+08:00", "utc": "1987-04-06T04:31:15Z", "ms": 544681875071.88416 }, "end": { "local": "1987-04-06T13:19:15+08:00", "utc": "1987-04-06T05:19:15Z", "ms": 544684755071.88416 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-04-07", "window": { "start": { "local": "1987-04-07T12:30:58+08:00", "utc": "1987-04-07T04:30:58Z", "ms": 544768257940.13464 }, "end": { "local": "1987-04-07T13:18:58+08:00", "utc": "1987-04-07T05:18:58Z", "ms": 544771137940.13464 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:35 on Mon 6 Apr to 05:00 on Tue 7 Apr.", "fact": "1987-04-05T18:34:52Z → 1987-04-06T21:00:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 6th, 12:31–13:19 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27033 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Zunyi, 1987: Monday 6 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": "1987-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-06", "confidence": "determinate" } ], "quote": "In Zunyi, Bhavānī Utpatti 1987 falls on Monday 6 April. Aṣṭamī runs from 02:35 on Mon 6 Apr to 05:00 on Tue 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18703, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1987-04-07T05:00:25+08:00", "utc": "1987-04-06T21:00:25Z", "ms": 544741225056.3164 }, "end": { "local": "1987-04-08T07:18:58+08:00", "utc": "1987-04-07T23:18:58Z", "ms": 544835938278.2412 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-07T05:00:25+08:00", "utc": "1987-04-06T21:00:25Z", "ms": 544741225056.3164 }, "end": { "local": "1987-04-08T07:18:58+08:00", "utc": "1987-04-07T23:18:58Z", "ms": 544835938278.2412 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-07", "window": { "start": { "local": "1987-04-07T12:30:58+08:00", "utc": "1987-04-07T04:30:58Z", "ms": 544768257940.13464 }, "end": { "local": "1987-04-07T13:18:58+08:00", "utc": "1987-04-07T05:18:58Z", "ms": 544771137940.13464 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-04-08", "window": { "start": { "local": "1987-04-08T12:30:41+08:00", "utc": "1987-04-08T04:30:41Z", "ms": 544854640999.7344 }, "end": { "local": "1987-04-08T13:18:41+08:00", "utc": "1987-04-08T05:18:41Z", "ms": 544857520999.7344 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 05:00 on Tue 7 Apr to 07:19 on Wed 8 Apr.", "fact": "1987-04-06T21:00:25Z → 1987-04-07T23:18:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 7th, 12:31–13:19 on the 8th.", "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 7th and 0 of 48 on the 8th.", "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 18703 s" }, { "step": "ruling", "text": "Rāma Navamī, Zunyi, 1987: Tuesday 7 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": "1987-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-07", "confidence": "determinate" } ], "quote": "In Zunyi, Rāma Navamī 1987 falls on Tuesday 7 April. Navamī runs from 05:00 on Tue 7 Apr to 07:19 on Wed 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-04-10", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9753, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-04-09T09:17:53+08:00", "utc": "1987-04-09T01:17:53Z", "ms": 544929473484.3141 }, "end": { "local": "1987-04-10T10:47:07+08:00", "utc": "1987-04-10T02:47:07Z", "ms": 545021227221.77734 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-09T09:17:53+08:00", "utc": "1987-04-09T01:17:53Z", "ms": 544929473484.3141 }, "end": { "local": "1987-04-10T10:47:07+08:00", "utc": "1987-04-10T02:47:07Z", "ms": 545021227221.77734 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-04-09", "window": { "start": { "local": "1987-04-09T06:35:20+08:00", "utc": "1987-04-08T22:35:20Z", "ms": 544919720187.6569 }, "end": { "local": "1987-04-09T06:35:20+08:00", "utc": "1987-04-08T22:35:20Z", "ms": 544919720187.6569 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-04-10", "window": { "start": { "local": "1987-04-10T06:34:16+08:00", "utc": "1987-04-09T22:34:16Z", "ms": 545006055615.9925 }, "end": { "local": "1987-04-10T06:34:16+08:00", "utc": "1987-04-09T22:34:16Z", "ms": 545006055615.9925 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:18 on Thu 9 Apr to 10:47 on Fri 10 Apr.", "fact": "1987-04-09T01:17:53Z → 1987-04-10T02:47:07Z" }, { "step": "kaala", "text": "Sunrise is at 06:35 on the 9th and 06:34 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 9753 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Zunyi, 1987: Friday 10 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": "1987-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-10", "confidence": "determinate" } ], "quote": "In Zunyi, Kāmadā Ekādaśī 1987 falls on Friday 10 April. Ekādaśī runs from 09:18 on Thu 9 Apr to 10:47 on Fri 10 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-04-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2117, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-04-11T11:40:10+08:00", "utc": "1987-04-11T03:40:10Z", "ms": 545110810148.9605 }, "end": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-11T11:40:10+08:00", "utc": "1987-04-11T03:40:10Z", "ms": 545110810148.9605 }, "end": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-11", "window": { "start": { "local": "1987-04-11T12:29:52+08:00", "utc": "1987-04-11T04:29:52Z", "ms": 545113791511.3683 }, "end": { "local": "1987-04-11T13:17:52+08:00", "utc": "1987-04-11T05:17:52Z", "ms": 545116671511.3683 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-04-12", "window": { "start": { "local": "1987-04-12T13:29:36+09:00", "utc": "1987-04-12T04:29:36Z", "ms": 545200175522.4859 }, "end": { "local": "1987-04-12T14:17:36+09:00", "utc": "1987-04-12T05:17:36Z", "ms": 545203055522.4859 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:40 on Sat 11 Apr to 12:54 on Sun 12 Apr.", "fact": "1987-04-11T03:40:10Z → 1987-04-12T03:54:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 11th, 13:30–14:18 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2117 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Zunyi, 1987: Saturday 11 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": "1987-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-11", "confidence": "boundary" } ], "quote": "In Zunyi, Anaṅga Trayodaśī 1987 falls on Saturday 11 April. Trayodaśī runs from 11:40 on Sat 11 Apr to 12:54 on Sun 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-04-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26445, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-04-11T11:40:10+08:00", "utc": "1987-04-11T03:40:10Z", "ms": 545110810148.9605 }, "end": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-11T11:40:10+08:00", "utc": "1987-04-11T03:40:10Z", "ms": 545110810148.9605 }, "end": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-04-11", "window": { "start": { "local": "1987-04-11T19:14:32+08:00", "utc": "1987-04-11T11:14:32Z", "ms": 545138071559.82904 }, "end": { "local": "1987-04-11T20:44:52+08:00", "utc": "1987-04-11T12:44:52Z", "ms": 545143492385.98376 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "1987-04-12", "window": { "start": { "local": "1987-04-12T20:15:03+09:00", "utc": "1987-04-12T11:15:03Z", "ms": 545224503288.9822 }, "end": { "local": "1987-04-12T21:45:11+09:00", "utc": "1987-04-12T12:45:11Z", "ms": 545229911453.5266 } }, "covered_min": 0, "window_min": 90, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:40 on Sat 11 Apr to 12:54 on Sun 12 Apr.", "fact": "1987-04-11T03:40:10Z → 1987-04-12T03:54:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:15–20:45 on the 11th, 20:15–21:45 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 90 of 90 minutes on the 11th and 0 of 90 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 26445 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Saturday 11 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": "1987-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-11", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Saturday 11 April. Trayodaśī runs from 11:40 on Sat 11 Apr to 12:54 on Sun 12 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2117, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 }, "end": { "local": "1987-04-13T12:30:10+09:00", "utc": "1987-04-13T03:30:10Z", "ms": 545283010356.49774 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-12T12:54:19+09:00", "utc": "1987-04-12T03:54:19Z", "ms": 545198058758.54395 }, "end": { "local": "1987-04-13T12:30:10+09:00", "utc": "1987-04-13T03:30:10Z", "ms": 545283010356.49774 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-12", "window": { "start": { "local": "1987-04-12T13:29:36+09:00", "utc": "1987-04-12T04:29:36Z", "ms": 545200175522.4859 }, "end": { "local": "1987-04-12T14:17:36+09:00", "utc": "1987-04-12T05:17:36Z", "ms": 545203055522.4859 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-04-13", "window": { "start": { "local": "1987-04-13T13:29:20+09:00", "utc": "1987-04-13T04:29:20Z", "ms": 545286559819.48804 }, "end": { "local": "1987-04-13T14:17:20+09:00", "utc": "1987-04-13T05:17:20Z", "ms": 545289439819.48804 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:54 on Sun 12 Apr to 12:30 on Mon 13 Apr.", "fact": "1987-04-12T03:54:19Z → 1987-04-13T03:30:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:30–14:18 on the 12th, 13:29–14:17 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī 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: paraviddha → only-day · margin 2117 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Zunyi, 1987: Sunday 12 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": "1987-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-12", "confidence": "determinate" } ], "quote": "In Zunyi, Viṣṇudamanaka Caturdaśī 1987 falls on Sunday 12 April. Caturdaśī runs from 12:54 on Sun 12 Apr to 12:30 on Mon 13 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3549, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-04-13T12:30:10+09:00", "utc": "1987-04-13T03:30:10Z", "ms": 545283010356.49774 }, "end": { "local": "1987-04-14T11:30:59+09:00", "utc": "1987-04-14T02:30:59Z", "ms": 545365858561.16693 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1987-04-13T12:30:10+09:00", "utc": "1987-04-13T03:30:10Z", "ms": 545283010356.49774 }, "end": { "local": "1987-04-14T11:30:59+09:00", "utc": "1987-04-14T02:30:59Z", "ms": 545365858561.16693 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-04-13", "window": { "start": { "local": "1987-04-13T13:29:20+09:00", "utc": "1987-04-13T04:29:20Z", "ms": 545286559819.48804 }, "end": { "local": "1987-04-13T14:17:20+09:00", "utc": "1987-04-13T05:17:20Z", "ms": 545289439819.48804 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-04-14", "window": { "start": { "local": "1987-04-14T13:29:04+09:00", "utc": "1987-04-14T04:29:04Z", "ms": 545372944422.1272 }, "end": { "local": "1987-04-14T14:17:04+09:00", "utc": "1987-04-14T05:17:04Z", "ms": 545375824422.1272 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:30 on Mon 13 Apr to 11:31 on Tue 14 Apr.", "fact": "1987-04-13T03:30:10Z → 1987-04-14T02:30:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:29–14:17 on the 13th, 13:29–14:17 on the 14th.", "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 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 3549 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Zunyi, 1987: Monday 13 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": "1987-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-13", "confidence": "determinate" } ], "quote": "In Zunyi, Caitrī Pūrṇimā 1987 falls on Monday 13 April. Pūrṇimā runs from 12:30 on Mon 13 Apr to 11:31 on Tue 14 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19091, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1987-04-14T12:48:13+09:00", "utc": "1987-04-14T03:48:13Z", "ms": 545370493111.26996 }, "end": { "local": "1987-05-15T09:40:13+09:00", "utc": "1987-05-15T00:40:13Z", "ms": 548037613356.595 } }, "span": { "of": "transit", "start": { "local": "1987-04-14T12:48:13+09:00", "utc": "1987-04-14T03:48:13Z", "ms": 545370493111.26996 }, "end": { "local": "1987-04-14T12:48:13+09:00", "utc": "1987-04-14T03:48:13Z", "ms": 545370493111.26996 } }, "kaala": "day", "days": [ { "local_date": "1987-04-13", "window": { "start": { "local": "1987-04-13T07:31:05+09:00", "utc": "1987-04-12T22:31:05Z", "ms": 545265064523.0654 }, "end": { "local": "1987-04-14T07:30:02+09:00", "utc": "1987-04-13T22:30:02Z", "ms": 545351401792.1692 } }, "covered_min": 0, "window_min": 1439, "qualifies": false }, { "local_date": "1987-04-14", "window": { "start": { "local": "1987-04-14T07:30:02+09:00", "utc": "1987-04-13T22:30:02Z", "ms": 545351401792.1692 }, "end": { "local": "1987-04-15T07:29:00+09:00", "utc": "1987-04-14T22:29:00Z", "ms": 545437739591.49243 } }, "covered_min": 1, "window_min": 1439, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 12:48 on Tue 14 Apr.", "fact": "1987-04-14T03:48:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 07:31 on the 13th, and from 07:30 on the 14th.", "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 14th, not the 13th.", "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 19091 s" }, { "step": "ruling", "text": "Vaiśākhī, Zunyi, 1987: Tuesday 14 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": "1987-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1987-04-14", "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": "sunset-rule", "local_date": "1987-04-14", "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 Zunyi, Vaiśākhī 1987 falls on Tuesday 14 April. The Sun enters Meṣa at 12:48 on Tue 14 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-04-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12972, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-04-17T05:57:50+09:00", "utc": "1987-04-16T20:57:50Z", "ms": 545605069820.5227 }, "end": { "local": "1987-04-18T03:36:08+09:00", "utc": "1987-04-17T18:36:08Z", "ms": 545682967696.0604 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-17T05:57:50+09:00", "utc": "1987-04-16T20:57:50Z", "ms": 545605069820.5227 }, "end": { "local": "1987-04-18T03:36:08+09:00", "utc": "1987-04-17T18:36:08Z", "ms": 545682967696.0604 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-04-16", "window": { "start": { "local": "1987-04-16T22:50:27+09:00", "utc": "1987-04-16T13:50:27Z", "ms": 545579426946.81775 }, "end": { "local": "1987-04-16T22:50:27+09:00", "utc": "1987-04-16T13:50:27Z", "ms": 545579426946.81775 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-04-17", "window": { "start": { "local": "1987-04-17T23:59:55+09:00", "utc": "1987-04-17T14:59:55Z", "ms": 545669995270.4042 }, "end": { "local": "1987-04-17T23:59:55+09:00", "utc": "1987-04-17T14:59:55Z", "ms": 545669995270.4042 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:58 on Fri 17 Apr to 03:36 on Sat 18 Apr.", "fact": "1987-04-16T20:57:50Z → 1987-04-17T18:36:08Z" }, { "step": "kaala", "text": "Moonrise is at 22:50 on the 16th and 00:00 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 16th and is on the 17th.", "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 12972 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Friday 17 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": "1987-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-17", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Friday 17 April. Caturthī runs from 05:58 on Fri 17 Apr to 03:36 on Sat 18 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-04-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-04-24", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20230, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-04-23T14:25:41+09:00", "utc": "1987-04-23T05:25:41Z", "ms": 546153940549.72003 }, "end": { "local": "1987-04-24T12:57:18+09:00", "utc": "1987-04-24T03:57:18Z", "ms": 546235038054.42896 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-23T14:25:41+09:00", "utc": "1987-04-23T05:25:41Z", "ms": 546153940549.72003 }, "end": { "local": "1987-04-24T12:57:18+09:00", "utc": "1987-04-24T03:57:18Z", "ms": 546235038054.42896 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-04-23", "window": { "start": { "local": "1987-04-23T07:21:04+09:00", "utc": "1987-04-22T22:21:04Z", "ms": 546128464433.7307 }, "end": { "local": "1987-04-23T07:21:04+09:00", "utc": "1987-04-22T22:21:04Z", "ms": 546128464433.7307 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-04-24", "window": { "start": { "local": "1987-04-24T07:20:08+09:00", "utc": "1987-04-23T22:20:08Z", "ms": 546214808247.1353 }, "end": { "local": "1987-04-24T07:20:08+09:00", "utc": "1987-04-23T22:20:08Z", "ms": 546214808247.1353 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:26 on Thu 23 Apr to 12:57 on Fri 24 Apr.", "fact": "1987-04-23T05:25:41Z → 1987-04-24T03:57:18Z" }, { "step": "kaala", "text": "Sunrise is at 07:21 on the 23rd and 07:20 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 20230 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Zunyi, 1987: Friday 24 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": "1987-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-24", "confidence": "determinate" } ], "quote": "In Zunyi, Varūthinī Ekādaśī 1987 falls on Friday 24 April. Ekādaśī runs from 14:26 on Thu 23 Apr to 12:57 on Fri 24 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-04-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-04-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30863, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-04-25T11:47:45+09:00", "utc": "1987-04-25T02:47:45Z", "ms": 546317264693.3707 }, "end": { "local": "1987-04-26T10:59:10+09:00", "utc": "1987-04-26T01:59:10Z", "ms": 546400749934.6916 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-25T11:47:45+09:00", "utc": "1987-04-25T02:47:45Z", "ms": 546317264693.3707 }, "end": { "local": "1987-04-26T10:59:10+09:00", "utc": "1987-04-26T01:59:10Z", "ms": 546400749934.6916 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-04-25", "window": { "start": { "local": "1987-04-25T20:22:08+09:00", "utc": "1987-04-25T11:22:08Z", "ms": 546348127998.0689 }, "end": { "local": "1987-04-25T21:49:37+09:00", "utc": "1987-04-25T12:49:37Z", "ms": 546353377369.0433 } }, "covered_min": 87, "window_min": 87, "qualifies": true }, { "local_date": "1987-04-26", "window": { "start": { "local": "1987-04-26T20:22:42+09:00", "utc": "1987-04-26T11:22:42Z", "ms": 546434561762.36237 }, "end": { "local": "1987-04-26T21:49:59+09:00", "utc": "1987-04-26T12:49:59Z", "ms": 546439799466.463 } }, "covered_min": 0, "window_min": 87, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:48 on Sat 25 Apr to 10:59 on Sun 26 Apr.", "fact": "1987-04-25T02:47:45Z → 1987-04-26T01:59:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:22–21:50 on the 25th, 20:23–21:50 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 87 of 87 minutes on the 25th and 0 of 87 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 30863 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Saturday 25 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": "1987-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-25", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Saturday 25 April. Trayodaśī runs from 11:48 on Sat 25 Apr to 10:59 on Sun 26 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-04-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-04-26", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29991, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-04-26T10:59:10+09:00", "utc": "1987-04-26T01:59:10Z", "ms": 546400749934.6916 }, "end": { "local": "1987-04-27T10:33:54+09:00", "utc": "1987-04-27T01:33:54Z", "ms": 546485634269.3542 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-26T10:59:10+09:00", "utc": "1987-04-26T01:59:10Z", "ms": 546400749934.6916 }, "end": { "local": "1987-04-27T10:33:54+09:00", "utc": "1987-04-27T01:33:54Z", "ms": 546485634269.3542 } }, "kaala": "nishita", "days": [ { "local_date": "1987-04-25", "window": { "start": { "local": "1987-04-26T01:26:13+09:00", "utc": "1987-04-25T16:26:13Z", "ms": 546366373139.2228 }, "end": { "local": "1987-04-26T02:14:13+09:00", "utc": "1987-04-25T17:14:13Z", "ms": 546369253139.2228 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-04-26", "window": { "start": { "local": "1987-04-27T01:26:03+09:00", "utc": "1987-04-26T16:26:03Z", "ms": 546452763152.7397 }, "end": { "local": "1987-04-27T02:14:03+09:00", "utc": "1987-04-26T17:14:03Z", "ms": 546455643152.7397 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:59 on Sun 26 Apr to 10:34 on Mon 27 Apr.", "fact": "1987-04-26T01:59:10Z → 1987-04-27T01:33:54Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:26–02:14 on the 25th, 01:26–02:14 on the 26th.", "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 25th and 48 of 48 on the 26th.", "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 29991 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Sunday 26 April.", "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": "1987-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-26", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Sunday 26 April. Caturdaśī runs from 10:59 on Sun 26 Apr to 10:34 on Mon 27 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25137, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-04-30T12:00:14+09:00", "utc": "1987-04-30T03:00:14Z", "ms": 546750014056.3612 }, "end": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-30T12:00:14+09:00", "utc": "1987-04-30T03:00:14Z", "ms": 546750014056.3612 }, "end": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-04-30", "window": { "start": { "local": "1987-04-30T20:24:58+09:00", "utc": "1987-04-30T11:24:58Z", "ms": 546780298185.0918 }, "end": { "local": "1987-04-30T21:51:30+09:00", "utc": "1987-04-30T12:51:30Z", "ms": 546785490210.50867 } }, "covered_min": 87, "window_min": 87, "qualifies": true }, { "local_date": "1987-05-01", "window": { "start": { "local": "1987-05-01T20:25:33+09:00", "utc": "1987-05-01T11:25:33Z", "ms": 546866732586.8209 }, "end": { "local": "1987-05-01T21:51:53+09:00", "utc": "1987-05-01T12:51:53Z", "ms": 546871913459.0247 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:00 on Thu 30 Apr to 13:27 on Fri 1 May.", "fact": "1987-04-30T03:00:14Z → 1987-05-01T04:26:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:25–21:52 on the 30th, 20:26–21:52 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 87 of 87 minutes on the 30th and 0 of 86 on the 1st.", "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 25137 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Zunyi, 1987: Thursday 30 April.", "fact": "confidence: determinate" } ], "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": "1987-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-04-30", "confidence": "determinate" } ], "quote": "In Zunyi, Paraśurāma Jayantī 1987 falls on Thursday 30 April. Tṛtīyā runs from 12:00 on Thu 30 Apr to 13:27 on Fri 1 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1322, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-04-30T12:00:14+09:00", "utc": "1987-04-30T03:00:14Z", "ms": 546750014056.3612 }, "end": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-04-30T12:00:14+09:00", "utc": "1987-04-30T03:00:14Z", "ms": 546750014056.3612 }, "end": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 } }, "kaala": "purvahna", "days": [ { "local_date": "1987-04-30", "window": { "start": { "local": "1987-04-30T07:14:49+09:00", "utc": "1987-04-29T22:14:49Z", "ms": 546732888560.5284 }, "end": { "local": "1987-04-30T11:38:12+09:00", "utc": "1987-04-30T02:38:12Z", "ms": 546748691768.7162 } }, "covered_min": 0, "window_min": 263, "qualifies": false }, { "local_date": "1987-05-01", "window": { "start": { "local": "1987-05-01T07:13:58+09:00", "utc": "1987-04-30T22:13:58Z", "ms": 546819238375.7183 }, "end": { "local": "1987-05-01T11:37:50+09:00", "utc": "1987-05-01T02:37:50Z", "ms": 546835069779.4192 } }, "covered_min": 264, "window_min": 264, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:00 on Thu 30 Apr to 13:27 on Fri 1 May.", "fact": "1987-04-30T03:00:14Z → 1987-05-01T04:26:36Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:15–11:38 on the 30th, 07:14–11:38 on the 1st.", "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 263 minutes on the 30th and 264 of 264 on the 1st.", "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 1322 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Zunyi, 1987: Friday 1 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": "1987-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-01", "confidence": "determinate" } ], "quote": "In Zunyi, Akṣaya Tṛtīyā 1987 falls on Friday 1 May. Tṛtīyā runs from 12:00 on Thu 30 Apr to 13:27 on Fri 1 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-05-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-02", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 51, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 }, "end": { "local": "1987-05-02T15:19:04+09:00", "utc": "1987-05-02T06:19:04Z", "ms": 546934743586.9068 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-01T13:26:36+09:00", "utc": "1987-05-01T04:26:36Z", "ms": 546841596040.18304 }, "end": { "local": "1987-05-02T15:19:04+09:00", "utc": "1987-05-02T06:19:04Z", "ms": 546934743586.9068 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-01", "window": { "start": { "local": "1987-05-01T13:25:45+09:00", "utc": "1987-05-01T04:25:45Z", "ms": 546841545481.26965 }, "end": { "local": "1987-05-01T14:13:45+09:00", "utc": "1987-05-01T05:13:45Z", "ms": 546844425481.26965 } }, "covered_min": 47, "window_min": 48, "qualifies": true }, { "local_date": "1987-05-02", "window": { "start": { "local": "1987-05-02T13:25:38+09:00", "utc": "1987-05-02T04:25:38Z", "ms": 546927938107.5896 }, "end": { "local": "1987-05-02T14:13:38+09:00", "utc": "1987-05-02T05:13:38Z", "ms": 546930818107.5896 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:27 on Fri 1 May to 15:19 on Sat 2 May.", "fact": "1987-05-01T04:26:36Z → 1987-05-02T06:19:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 1st, 13:26–14:14 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 47 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": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 51 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Saturday 2 May.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "1987-05-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-02", "confidence": "boundary" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Saturday 2 May. Caturthī runs from 13:27 on Fri 1 May to 15:19 on Sat 2 May and covers all of madhyāhna that midday. It also reaches the previous midday for 47 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 0 min 51 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3925, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-05-02T15:19:04+09:00", "utc": "1987-05-02T06:19:04Z", "ms": 546934743586.9068 }, "end": { "local": "1987-05-03T17:31:45+09:00", "utc": "1987-05-03T08:31:45Z", "ms": 547029105234.45764 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-02T15:19:04+09:00", "utc": "1987-05-02T06:19:04Z", "ms": 546934743586.9068 }, "end": { "local": "1987-05-03T17:31:45+09:00", "utc": "1987-05-03T08:31:45Z", "ms": 547029105234.45764 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-02", "window": { "start": { "local": "1987-05-02T13:25:38+09:00", "utc": "1987-05-02T04:25:38Z", "ms": 546927938107.5896 }, "end": { "local": "1987-05-02T14:13:38+09:00", "utc": "1987-05-02T05:13:38Z", "ms": 546930818107.5896 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-05-03", "window": { "start": { "local": "1987-05-03T13:25:31+09:00", "utc": "1987-05-03T04:25:31Z", "ms": 547014331256.50183 }, "end": { "local": "1987-05-03T14:13:31+09:00", "utc": "1987-05-03T05:13:31Z", "ms": 547017211256.50183 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 15:19 on Sat 2 May to 17:32 on Sun 3 May.", "fact": "1987-05-02T06:19:04Z → 1987-05-03T08:31:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 2nd, 13:26–14:14 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 3925 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Zunyi, 1987: Sunday 3 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": "1987-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-03", "confidence": "determinate" } ], "quote": "In Zunyi, Śaṅkara Jayantī 1987 falls on Sunday 3 May. Pañcamī runs from 15:19 on Sat 2 May to 17:32 on Sun 3 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20528, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-05-04T19:55:32+09:00", "utc": "1987-05-04T10:55:32Z", "ms": 547124132479.45184 }, "end": { "local": "1987-05-05T22:18:33+09:00", "utc": "1987-05-05T13:18:33Z", "ms": 547219113217.3351 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-04T19:55:32+09:00", "utc": "1987-05-04T10:55:32Z", "ms": 547124132479.45184 }, "end": { "local": "1987-05-05T22:18:33+09:00", "utc": "1987-05-05T13:18:33Z", "ms": 547219113217.3351 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-04", "window": { "start": { "local": "1987-05-04T13:25:25+09:00", "utc": "1987-05-04T04:25:25Z", "ms": 547100724932.3834 }, "end": { "local": "1987-05-04T14:13:25+09:00", "utc": "1987-05-04T05:13:25Z", "ms": 547103604932.3834 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-05-05", "window": { "start": { "local": "1987-05-05T13:25:19+09:00", "utc": "1987-05-05T04:25:19Z", "ms": 547187119139.41125 }, "end": { "local": "1987-05-05T14:13:19+09:00", "utc": "1987-05-05T05:13:19Z", "ms": 547189999139.41125 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:56 on Mon 4 May to 22:19 on Tue 5 May.", "fact": "1987-05-04T10:55:32Z → 1987-05-05T13:18:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:25–14:13 on the 4th, 13:25–14:13 on the 5th.", "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 4th and 48 of 48 on the 5th.", "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 20528 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Zunyi, 1987: Tuesday 5 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": "1987-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-05", "confidence": "determinate" } ], "quote": "In Zunyi, Gaṅgotpatti (Ganga Saptami) 1987 falls on Tuesday 5 May. Saptamī runs from 19:56 on Mon 4 May to 22:19 on Tue 5 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-05-09", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12642, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-05-09T03:15:01+09:00", "utc": "1987-05-08T18:15:01Z", "ms": 547496100822.6349 }, "end": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-09T03:15:01+09:00", "utc": "1987-05-08T18:15:01Z", "ms": 547496100822.6349 }, "end": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-05-09", "window": { "start": { "local": "1987-05-09T07:07:52+09:00", "utc": "1987-05-08T22:07:52Z", "ms": 547510072309.2572 }, "end": { "local": "1987-05-09T07:07:52+09:00", "utc": "1987-05-08T22:07:52Z", "ms": 547510072309.2572 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-05-10", "window": { "start": { "local": "1987-05-10T07:07:11+09:00", "utc": "1987-05-09T22:07:11Z", "ms": 547596431271.1593 }, "end": { "local": "1987-05-10T07:07:11+09:00", "utc": "1987-05-09T22:07:11Z", "ms": 547596431271.1593 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:15 on Sat 9 May to 03:36 on Sun 10 May.", "fact": "1987-05-08T18:15:01Z → 1987-05-09T18:36:29Z" }, { "step": "kaala", "text": "Sunrise is at 07:08 on the 9th and 07:07 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not 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 12642 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Zunyi, 1987: Saturday 9 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": "1987-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-09", "confidence": "determinate" } ], "quote": "In Zunyi, Mohinī Ekādaśī 1987 falls on Saturday 9 May. Ekādaśī runs from 03:15 on Sat 9 May to 03:36 on Sun 10 May and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-05-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35309, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 }, "end": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 }, "end": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-10", "window": { "start": { "local": "1987-05-10T13:24:58+09:00", "utc": "1987-05-10T04:24:58Z", "ms": 547619098275.52246 }, "end": { "local": "1987-05-10T14:12:58+09:00", "utc": "1987-05-10T05:12:58Z", "ms": 547621978275.52246 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-05-11", "window": { "start": { "local": "1987-05-11T13:24:56+09:00", "utc": "1987-05-11T04:24:56Z", "ms": 547705495748.4558 }, "end": { "local": "1987-05-11T14:12:56+09:00", "utc": "1987-05-11T05:12:56Z", "ms": 547708375748.4558 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:36 on Sun 10 May to 03:12 on Mon 11 May.", "fact": "1987-05-09T18:36:29Z → 1987-05-10T18:11:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:25–14:13 on the 10th, 13:25–14:13 on the 11th.", "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 10th and 0 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: purvaviddha → only-day · margin 35309 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Zunyi, 1987: Sunday 10 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": "1987-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-10", "confidence": "determinate" } ], "quote": "In Zunyi, Paraśurāma Dvādaśī 1987 falls on Sunday 10 May. Dvādaśī runs from 03:36 on Sun 10 May to 03:12 on Mon 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35309, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 }, "end": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-10T03:36:29+09:00", "utc": "1987-05-09T18:36:29Z", "ms": 547583788866.14197 }, "end": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-10", "window": { "start": { "local": "1987-05-10T13:24:58+09:00", "utc": "1987-05-10T04:24:58Z", "ms": 547619098275.52246 }, "end": { "local": "1987-05-10T14:12:58+09:00", "utc": "1987-05-10T05:12:58Z", "ms": 547621978275.52246 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-05-11", "window": { "start": { "local": "1987-05-11T13:24:56+09:00", "utc": "1987-05-11T04:24:56Z", "ms": 547705495748.4558 }, "end": { "local": "1987-05-11T14:12:56+09:00", "utc": "1987-05-11T05:12:56Z", "ms": 547708375748.4558 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:36 on Sun 10 May to 03:12 on Mon 11 May.", "fact": "1987-05-09T18:36:29Z → 1987-05-10T18:11:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:25–14:13 on the 10th, 13:25–14:13 on the 11th.", "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 10th and 0 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: purvaviddha → only-day · margin 35309 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Zunyi, 1987: Sunday 10 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": "1987-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-10", "confidence": "determinate" } ], "quote": "In Zunyi, Rukmiṇī Dvādaśī 1987 falls on Sunday 10 May. Dvādaśī runs from 03:36 on Sun 10 May to 03:12 on Mon 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-05-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14782, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 }, "end": { "local": "1987-05-12T02:02:18+09:00", "utc": "1987-05-11T17:02:18Z", "ms": 547750938451.10736 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-11T03:11:45+09:00", "utc": "1987-05-10T18:11:45Z", "ms": 547668705461.8474 }, "end": { "local": "1987-05-12T02:02:18+09:00", "utc": "1987-05-11T17:02:18Z", "ms": 547750938451.10736 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-05-10", "window": { "start": { "local": "1987-05-10T20:30:45+09:00", "utc": "1987-05-10T11:30:45Z", "ms": 547644645279.8857 }, "end": { "local": "1987-05-10T21:55:31+09:00", "utc": "1987-05-10T12:55:31Z", "ms": 547649731422.08734 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1987-05-11", "window": { "start": { "local": "1987-05-11T20:31:20+09:00", "utc": "1987-05-11T11:31:20Z", "ms": 547731080150.5135 }, "end": { "local": "1987-05-11T21:55:56+09:00", "utc": "1987-05-11T12:55:56Z", "ms": 547736156470.99524 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:12 on Mon 11 May to 02:02 on Tue 12 May.", "fact": "1987-05-10T18:11:45Z → 1987-05-11T17:02:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:31–21:56 on the 10th, 20:31–21:56 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 0 of 85 minutes on the 10th and 85 of 85 on the 11th.", "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 14782 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Monday 11 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": "1987-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-11", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Monday 11 May. Trayodaśī runs from 03:12 on Mon 11 May to 02:02 on Tue 12 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8187, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-05-12T02:02:18+09:00", "utc": "1987-05-11T17:02:18Z", "ms": 547750938451.10736 }, "end": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-12T02:02:18+09:00", "utc": "1987-05-11T17:02:18Z", "ms": 547750938451.10736 }, "end": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-05-11", "window": { "start": { "local": "1987-05-11T20:31:20+09:00", "utc": "1987-05-11T11:31:20Z", "ms": 547731080150.5135 }, "end": { "local": "1987-05-11T21:55:56+09:00", "utc": "1987-05-11T12:55:56Z", "ms": 547736156470.99524 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1987-05-12", "window": { "start": { "local": "1987-05-12T20:31:55+09:00", "utc": "1987-05-12T11:31:55Z", "ms": 547817515003.1772 }, "end": { "local": "1987-05-12T21:56:22+09:00", "utc": "1987-05-12T12:56:22Z", "ms": 547822581657.87756 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:02 on Tue 12 May to 00:13 on Wed 13 May.", "fact": "1987-05-11T17:02:18Z → 1987-05-12T15:12:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:31–21:56 on the 11th, 20:32–21:56 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 11th and 84 of 84 on the 12th.", "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 8187 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Zunyi, 1987: Tuesday 12 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": "1987-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-12", "confidence": "determinate" } ], "quote": "In Zunyi, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1987 falls on Tuesday 12 May. Caturdaśī runs from 02:02 on Tue 12 May to 00:13 on Wed 13 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27442, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 }, "end": { "local": "1987-05-13T21:50:14+09:00", "utc": "1987-05-13T12:50:14Z", "ms": 547908614356.1118 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 }, "end": { "local": "1987-05-13T21:50:14+09:00", "utc": "1987-05-13T12:50:14Z", "ms": 547908614356.1118 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-12", "window": { "start": { "local": "1987-05-12T13:24:54+09:00", "utc": "1987-05-12T04:24:54Z", "ms": 547791893778.65186 }, "end": { "local": "1987-05-12T14:12:54+09:00", "utc": "1987-05-12T05:12:54Z", "ms": 547794773778.65186 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-05-13", "window": { "start": { "local": "1987-05-13T13:24:52+09:00", "utc": "1987-05-13T04:24:52Z", "ms": 547878292369.9634 }, "end": { "local": "1987-05-13T14:12:52+09:00", "utc": "1987-05-13T05:12:52Z", "ms": 547881172369.9634 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:13 on Wed 13 May to 21:50 on Wed 13 May.", "fact": "1987-05-12T15:12:48Z → 1987-05-13T12:50:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:25–14:13 on the 12th, 13:25–14:13 on the 13th.", "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 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: unstated → only-day · margin 27442 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Zunyi, 1987: Wednesday 13 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": "1987-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-13", "confidence": "determinate" } ], "quote": "In Zunyi, Buddha Pūrṇimā 1987 falls on Wednesday 13 May. Pūrṇimā runs from 00:13 on Wed 13 May to 21:50 on Wed 13 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27442, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 }, "end": { "local": "1987-05-13T21:50:14+09:00", "utc": "1987-05-13T12:50:14Z", "ms": 547908614356.1118 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-13T00:12:48+09:00", "utc": "1987-05-12T15:12:48Z", "ms": 547830768233.70026 }, "end": { "local": "1987-05-13T21:50:14+09:00", "utc": "1987-05-13T12:50:14Z", "ms": 547908614356.1118 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-12", "window": { "start": { "local": "1987-05-12T13:24:54+09:00", "utc": "1987-05-12T04:24:54Z", "ms": 547791893778.65186 }, "end": { "local": "1987-05-12T14:12:54+09:00", "utc": "1987-05-12T05:12:54Z", "ms": 547794773778.65186 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-05-13", "window": { "start": { "local": "1987-05-13T13:24:52+09:00", "utc": "1987-05-13T04:24:52Z", "ms": 547878292369.9634 }, "end": { "local": "1987-05-13T14:12:52+09:00", "utc": "1987-05-13T05:12:52Z", "ms": 547881172369.9634 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:13 on Wed 13 May to 21:50 on Wed 13 May.", "fact": "1987-05-12T15:12:48Z → 1987-05-13T12:50:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:25–14:13 on the 12th, 13:25–14:13 on the 13th.", "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 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 27442 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Zunyi, 1987: Wednesday 13 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": "1987-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-13", "confidence": "determinate" } ], "quote": "In Zunyi, Sampat Gaurī Vrata 1987 falls on Wednesday 13 May. Pūrṇimā runs from 00:13 on Wed 13 May to 21:50 on Wed 13 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-05-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35145, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-05-16T12:51:46+09:00", "utc": "1987-05-16T03:51:46Z", "ms": 548135506352.64355 }, "end": { "local": "1987-05-17T09:45:53+09:00", "utc": "1987-05-17T00:45:53Z", "ms": 548210752987.14264 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-16T12:51:46+09:00", "utc": "1987-05-16T03:51:46Z", "ms": 548135506352.64355 }, "end": { "local": "1987-05-17T09:45:53+09:00", "utc": "1987-05-17T00:45:53Z", "ms": 548210752987.14264 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-05-15", "window": { "start": { "local": "1987-05-15T22:53:33+09:00", "utc": "1987-05-15T13:53:33Z", "ms": 548085213184.5383 }, "end": { "local": "1987-05-15T22:53:33+09:00", "utc": "1987-05-15T13:53:33Z", "ms": 548085213184.5383 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-05-16", "window": { "start": { "local": "1987-05-17T00:00:08+09:00", "utc": "1987-05-16T15:00:08Z", "ms": 548175607517.6416 }, "end": { "local": "1987-05-17T00:00:08+09:00", "utc": "1987-05-16T15:00:08Z", "ms": 548175607517.6416 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:52 on Sat 16 May to 09:46 on Sun 17 May.", "fact": "1987-05-16T03:51:46Z → 1987-05-17T00:45:53Z" }, { "step": "kaala", "text": "Moonrise is at 22:54 on the 15th and 00:00 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is on the 16th.", "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 35145 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Saturday 16 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": "1987-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-16", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Saturday 16 May. Caturthī runs from 12:52 on Sat 16 May to 09:46 on Sun 17 May and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-05-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-05-23", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32265, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-05-22T22:02:21+09:00", "utc": "1987-05-22T13:02:21Z", "ms": 548686940874.8193 }, "end": { "local": "1987-05-23T21:39:14+09:00", "utc": "1987-05-23T12:39:14Z", "ms": 548771953881.3419 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-22T22:02:21+09:00", "utc": "1987-05-22T13:02:21Z", "ms": 548686940874.8193 }, "end": { "local": "1987-05-23T21:39:14+09:00", "utc": "1987-05-23T12:39:14Z", "ms": 548771953881.3419 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-05-23", "window": { "start": { "local": "1987-05-23T07:00:06+09:00", "utc": "1987-05-22T22:00:06Z", "ms": 548719205774.5827 }, "end": { "local": "1987-05-23T07:00:06+09:00", "utc": "1987-05-22T22:00:06Z", "ms": 548719205774.5827 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-05-24", "window": { "start": { "local": "1987-05-24T06:59:42+09:00", "utc": "1987-05-23T21:59:42Z", "ms": 548805581906.61536 }, "end": { "local": "1987-05-24T06:59:42+09:00", "utc": "1987-05-23T21:59:42Z", "ms": 548805581906.61536 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:02 on Fri 22 May to 21:39 on Sat 23 May.", "fact": "1987-05-22T13:02:21Z → 1987-05-23T12:39:14Z" }, { "step": "kaala", "text": "Sunrise is at 07:00 on the 23rd and 07:00 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 32265 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Zunyi, 1987: Saturday 23 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": "1987-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-23", "confidence": "determinate" } ], "quote": "In Zunyi, Aparā Ekādaśī 1987 falls on Saturday 23 May. Ekādaśī runs from 22:02 on Fri 22 May to 21:39 on Sat 23 May and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-05-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-05-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-25", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 453, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-05-24T21:42:07+09:00", "utc": "1987-05-24T12:42:07Z", "ms": 548858527049.05493 }, "end": { "local": "1987-05-25T22:09:29+09:00", "utc": "1987-05-25T13:09:29Z", "ms": 548946569370.01636 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-24T21:42:07+09:00", "utc": "1987-05-24T12:42:07Z", "ms": 548858527049.05493 }, "end": { "local": "1987-05-25T22:09:29+09:00", "utc": "1987-05-25T13:09:29Z", "ms": 548946569370.01636 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-05-24", "window": { "start": { "local": "1987-05-24T20:38:47+09:00", "utc": "1987-05-24T11:38:47Z", "ms": 548854726541.72723 }, "end": { "local": "1987-05-24T22:01:31+09:00", "utc": "1987-05-24T13:01:31Z", "ms": 548859690917.0021 } }, "covered_min": 19, "window_min": 83, "qualifies": true }, { "local_date": "1987-05-25", "window": { "start": { "local": "1987-05-25T20:39:20+09:00", "utc": "1987-05-25T11:39:20Z", "ms": 548941159646.7981 }, "end": { "local": "1987-05-25T22:01:57+09:00", "utc": "1987-05-25T13:01:57Z", "ms": 548946116777.4978 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:42 on Sun 24 May to 22:09 on Mon 25 May.", "fact": "1987-05-24T12:42:07Z → 1987-05-25T13:09:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:39–22:02 on the 24th, 20:39–22:02 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 19 of 83 minutes on the 24th and 83 of 83 on the 25th.", "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 453 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Monday 25 May.", "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": "1987-05-25", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-25", "confidence": "boundary" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Monday 25 May. Trayodaśī runs from 21:42 on Sun 24 May to 22:09 on Mon 25 May and covers all of pradoṣa that evening. It also reaches the previous evening for 19 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/zunyi/festivals/1987/pradosha-vrata?on=1987-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-05-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8705, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-05-25T22:09:29+09:00", "utc": "1987-05-25T13:09:29Z", "ms": 548946569370.01636 }, "end": { "local": "1987-05-26T23:00:11+09:00", "utc": "1987-05-26T14:00:11Z", "ms": 549036010501.636 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-25T22:09:29+09:00", "utc": "1987-05-25T13:09:29Z", "ms": 548946569370.01636 }, "end": { "local": "1987-05-26T23:00:11+09:00", "utc": "1987-05-26T14:00:11Z", "ms": 549036010501.636 } }, "kaala": "nishita", "days": [ { "local_date": "1987-05-25", "window": { "start": { "local": "1987-05-26T01:25:09+09:00", "utc": "1987-05-25T16:25:09Z", "ms": 548958308886.92206 }, "end": { "local": "1987-05-26T02:13:09+09:00", "utc": "1987-05-25T17:13:09Z", "ms": 548961188886.92206 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-05-26", "window": { "start": { "local": "1987-05-27T01:25:15+09:00", "utc": "1987-05-26T16:25:15Z", "ms": 549044715331.37976 }, "end": { "local": "1987-05-27T02:13:15+09:00", "utc": "1987-05-26T17:13:15Z", "ms": 549047595331.37976 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:09 on Mon 25 May to 23:00 on Tue 26 May.", "fact": "1987-05-25T13:09:29Z → 1987-05-26T14:00:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:25–02:13 on the 25th, 01:25–02:13 on the 26th.", "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 25th and 0 of 48 on the 26th.", "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 8705 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Monday 25 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": "1987-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-25", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Monday 25 May. Caturdaśī runs from 22:09 on Mon 25 May to 23:00 on Tue 26 May and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27051, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-05-30T03:43:10+09:00", "utc": "1987-05-29T18:43:10Z", "ms": 549312189847.5435 }, "end": { "local": "1987-05-31T05:55:10+09:00", "utc": "1987-05-30T20:55:10Z", "ms": 549406509895.3698 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-30T03:43:10+09:00", "utc": "1987-05-29T18:43:10Z", "ms": 549312189847.5435 }, "end": { "local": "1987-05-31T05:55:10+09:00", "utc": "1987-05-30T20:55:10Z", "ms": 549406509895.3698 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-30", "window": { "start": { "local": "1987-05-30T13:25:53+09:00", "utc": "1987-05-30T04:25:53Z", "ms": 549347153160.579 }, "end": { "local": "1987-05-30T14:13:53+09:00", "utc": "1987-05-30T05:13:53Z", "ms": 549350033160.579 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-05-31", "window": { "start": { "local": "1987-05-31T13:26:01+09:00", "utc": "1987-05-31T04:26:01Z", "ms": 549433561232.03894 }, "end": { "local": "1987-05-31T14:14:01+09:00", "utc": "1987-05-31T05:14:01Z", "ms": 549436441232.03894 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:43 on Sat 30 May to 05:55 on Sun 31 May.", "fact": "1987-05-29T18:43:10Z → 1987-05-30T20:55:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 30th, 13:26–14:14 on the 31st.", "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 30th and 0 of 48 on the 31st.", "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 27051 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Zunyi, 1987: Saturday 30 May.", "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": "1987-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-30", "confidence": "determinate" } ], "quote": "In Zunyi, Rambhā Tṛtīyā 1987 falls on Saturday 30 May. Tṛtīyā runs from 03:43 on Sat 30 May to 05:55 on Sun 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-05-31", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18446, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-05-31T05:55:10+09:00", "utc": "1987-05-30T20:55:10Z", "ms": 549406509895.3698 }, "end": { "local": "1987-06-01T08:18:44+09:00", "utc": "1987-05-31T23:18:44Z", "ms": 549501523698.15027 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-05-31T05:55:10+09:00", "utc": "1987-05-30T20:55:10Z", "ms": 549406509895.3698 }, "end": { "local": "1987-06-01T08:18:44+09:00", "utc": "1987-05-31T23:18:44Z", "ms": 549501523698.15027 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-05-31", "window": { "start": { "local": "1987-05-31T13:26:01+09:00", "utc": "1987-05-31T04:26:01Z", "ms": 549433561232.03894 }, "end": { "local": "1987-05-31T14:14:01+09:00", "utc": "1987-05-31T05:14:01Z", "ms": 549436441232.03894 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-06-01", "window": { "start": { "local": "1987-06-01T13:26:10+09:00", "utc": "1987-06-01T04:26:10Z", "ms": 549519969709.21326 }, "end": { "local": "1987-06-01T14:14:10+09:00", "utc": "1987-06-01T05:14:10Z", "ms": 549522849709.21326 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:55 on Sun 31 May to 08:19 on Mon 1 Jun.", "fact": "1987-05-30T20:55:10Z → 1987-05-31T23:18:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 31st, 13:26–14:14 on the 1st.", "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 31st and 0 of 48 on the 1st.", "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 18446 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Sunday 31 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": "1987-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-05-31", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Sunday 31 May. Caturthī runs from 05:55 on Sun 31 May to 08:19 on Mon 1 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-05-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1295, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-06-02T10:45:35+09:00", "utc": "1987-06-02T01:45:35Z", "ms": 549596734682.7961 }, "end": { "local": "1987-06-03T13:04:52+09:00", "utc": "1987-06-03T04:04:52Z", "ms": 549691492333.4231 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-02T10:45:35+09:00", "utc": "1987-06-02T01:45:35Z", "ms": 549596734682.7961 }, "end": { "local": "1987-06-03T13:04:52+09:00", "utc": "1987-06-03T04:04:52Z", "ms": 549691492333.4231 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-02", "window": { "start": { "local": "1987-06-02T13:26:19+09:00", "utc": "1987-06-02T04:26:19Z", "ms": 549606378573.7649 }, "end": { "local": "1987-06-02T14:14:19+09:00", "utc": "1987-06-02T05:14:19Z", "ms": 549609258573.7649 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-06-03", "window": { "start": { "local": "1987-06-03T13:26:28+09:00", "utc": "1987-06-03T04:26:28Z", "ms": 549692787807.55493 }, "end": { "local": "1987-06-03T14:14:28+09:00", "utc": "1987-06-03T05:14:28Z", "ms": 549695667807.55493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 10:46 on Tue 2 Jun to 13:05 on Wed 3 Jun.", "fact": "1987-06-02T01:45:35Z → 1987-06-03T04:04:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 2nd, 13:26–14:14 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "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 1295 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Zunyi, 1987: Tuesday 2 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": "1987-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-03", "confidence": "determinate" } ], "quote": "In Zunyi, Araṇya Gaurī Vrata 1987 falls on Tuesday 2 June. Ṣaṣṭhī runs from 10:46 on Tue 2 Jun to 13:05 on Wed 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1295, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-06-02T10:45:35+09:00", "utc": "1987-06-02T01:45:35Z", "ms": 549596734682.7961 }, "end": { "local": "1987-06-03T13:04:52+09:00", "utc": "1987-06-03T04:04:52Z", "ms": 549691492333.4231 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-02T10:45:35+09:00", "utc": "1987-06-02T01:45:35Z", "ms": 549596734682.7961 }, "end": { "local": "1987-06-03T13:04:52+09:00", "utc": "1987-06-03T04:04:52Z", "ms": 549691492333.4231 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-02", "window": { "start": { "local": "1987-06-02T13:26:19+09:00", "utc": "1987-06-02T04:26:19Z", "ms": 549606378573.7649 }, "end": { "local": "1987-06-02T14:14:19+09:00", "utc": "1987-06-02T05:14:19Z", "ms": 549609258573.7649 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-06-03", "window": { "start": { "local": "1987-06-03T13:26:28+09:00", "utc": "1987-06-03T04:26:28Z", "ms": 549692787807.55493 }, "end": { "local": "1987-06-03T14:14:28+09:00", "utc": "1987-06-03T05:14:28Z", "ms": 549695667807.55493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 10:46 on Tue 2 Jun to 13:05 on Wed 3 Jun.", "fact": "1987-06-02T01:45:35Z → 1987-06-03T04:04:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:26–14:14 on the 2nd, 13:26–14:14 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "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 1295 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Zunyi, 1987: Tuesday 2 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": "1987-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-02", "confidence": "determinate" } ], "quote": "In Zunyi, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1987 falls on Tuesday 2 June. Ṣaṣṭhī runs from 10:46 on Tue 2 Jun to 13:05 on Wed 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-06-08", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33841, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-06-07T17:13:58+09:00", "utc": "1987-06-07T08:13:58Z", "ms": 550052037875.8583 }, "end": { "local": "1987-06-08T16:20:23+09:00", "utc": "1987-06-08T07:20:23Z", "ms": 550135223118.6858 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-07T17:13:58+09:00", "utc": "1987-06-07T08:13:58Z", "ms": 550052037875.8583 }, "end": { "local": "1987-06-08T16:20:23+09:00", "utc": "1987-06-08T07:20:23Z", "ms": 550135223118.6858 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-06-07", "window": { "start": { "local": "1987-06-07T06:56:26+09:00", "utc": "1987-06-06T21:56:26Z", "ms": 550014986186.3337 }, "end": { "local": "1987-06-07T06:56:26+09:00", "utc": "1987-06-06T21:56:26Z", "ms": 550014986186.3337 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-06-08", "window": { "start": { "local": "1987-06-08T06:56:22+09:00", "utc": "1987-06-07T21:56:22Z", "ms": 550101381976.8917 }, "end": { "local": "1987-06-08T06:56:22+09:00", "utc": "1987-06-07T21:56:22Z", "ms": 550101381976.8917 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:14 on Sun 7 Jun to 16:20 on Mon 8 Jun.", "fact": "1987-06-07T08:13:58Z → 1987-06-08T07:20:23Z" }, { "step": "kaala", "text": "Sunrise is at 06:56 on the 7th and 06:56 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 33841 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Zunyi, 1987: Monday 8 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": "1987-06-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-08", "confidence": "determinate" } ], "quote": "In Zunyi, Nirjalā Ekādaśī 1987 falls on Monday 8 June. Ekādaśī runs from 17:14 on Sun 7 Jun to 16:20 on Mon 8 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-06-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1370, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-06-08T16:20:23+09:00", "utc": "1987-06-08T07:20:23Z", "ms": 550135223118.6858 }, "end": { "local": "1987-06-09T14:38:20+09:00", "utc": "1987-06-09T05:38:20Z", "ms": 550215500288.226 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-08T16:20:23+09:00", "utc": "1987-06-08T07:20:23Z", "ms": 550135223118.6858 }, "end": { "local": "1987-06-09T14:38:20+09:00", "utc": "1987-06-09T05:38:20Z", "ms": 550215500288.226 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-08", "window": { "start": { "local": "1987-06-08T13:27:19+09:00", "utc": "1987-06-08T04:27:19Z", "ms": 550124838865.2405 }, "end": { "local": "1987-06-08T14:15:19+09:00", "utc": "1987-06-08T05:15:19Z", "ms": 550127718865.2405 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-06-09", "window": { "start": { "local": "1987-06-09T13:27:30+09:00", "utc": "1987-06-09T04:27:30Z", "ms": 550211249926.2839 }, "end": { "local": "1987-06-09T14:15:30+09:00", "utc": "1987-06-09T05:15:30Z", "ms": 550214129926.2839 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:20 on Mon 8 Jun to 14:38 on Tue 9 Jun.", "fact": "1987-06-08T07:20:23Z → 1987-06-09T05:38:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:27–14:15 on the 8th, 13:27–14:15 on the 9th.", "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 8th and 48 of 48 on the 9th.", "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 1370 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Zunyi, 1987: Tuesday 9 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": "1987-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-09", "confidence": "determinate" } ], "quote": "In Zunyi, Śrī Rāma Dvādaśī 1987 falls on Tuesday 9 June. Dvādaśī runs from 16:20 on Mon 8 Jun to 14:38 on Tue 9 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-06-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22101, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-06-09T14:38:20+09:00", "utc": "1987-06-09T05:38:20Z", "ms": 550215500288.226 }, "end": { "local": "1987-06-10T12:13:22+09:00", "utc": "1987-06-10T03:13:22Z", "ms": 550293202221.1118 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-09T14:38:20+09:00", "utc": "1987-06-09T05:38:20Z", "ms": 550215500288.226 }, "end": { "local": "1987-06-10T12:13:22+09:00", "utc": "1987-06-10T03:13:22Z", "ms": 550293202221.1118 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-06-09", "window": { "start": { "local": "1987-06-09T20:46:41+09:00", "utc": "1987-06-09T11:46:41Z", "ms": 550237600814.9692 }, "end": { "local": "1987-06-09T22:07:58+09:00", "utc": "1987-06-09T13:07:58Z", "ms": 550242477687.6398 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1987-06-10", "window": { "start": { "local": "1987-06-10T20:47:05+09:00", "utc": "1987-06-10T11:47:05Z", "ms": 550324025099.0796 }, "end": { "local": "1987-06-10T22:08:19+09:00", "utc": "1987-06-10T13:08:19Z", "ms": 550328898677.2521 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:38 on Tue 9 Jun to 12:13 on Wed 10 Jun.", "fact": "1987-06-09T05:38:20Z → 1987-06-10T03:13:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:47–22:08 on the 9th, 20:47–22:08 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 22101 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Tuesday 9 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": "1987-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-09", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Tuesday 9 June. Trayodaśī runs from 14:38 on Tue 9 Jun to 12:13 on Wed 10 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27610, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-06-11T09:13:36+09:00", "utc": "1987-06-11T00:13:36Z", "ms": 550368816000.8995 }, "end": { "local": "1987-06-12T05:48:49+09:00", "utc": "1987-06-11T20:48:49Z", "ms": 550442928678.7177 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-11T09:13:36+09:00", "utc": "1987-06-11T00:13:36Z", "ms": 550368816000.8995 }, "end": { "local": "1987-06-12T05:48:49+09:00", "utc": "1987-06-11T20:48:49Z", "ms": 550442928678.7177 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-06-10", "window": { "start": { "local": "1987-06-10T20:47:05+09:00", "utc": "1987-06-10T11:47:05Z", "ms": 550324025099.0796 }, "end": { "local": "1987-06-10T22:08:19+09:00", "utc": "1987-06-10T13:08:19Z", "ms": 550328898677.2521 } }, "covered_min": 0, "window_min": 81, "qualifies": false }, { "local_date": "1987-06-11", "window": { "start": { "local": "1987-06-11T20:47:29+09:00", "utc": "1987-06-11T11:47:29Z", "ms": 550410448581.5219 }, "end": { "local": "1987-06-11T22:08:39+09:00", "utc": "1987-06-11T13:08:39Z", "ms": 550415319137.9614 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:14 on Thu 11 Jun to 05:49 on Fri 12 Jun.", "fact": "1987-06-11T00:13:36Z → 1987-06-11T20:48:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:47–22:08 on the 10th, 20:47–22:09 on the 11th.", "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 81 minutes on the 10th and 81 of 81 on the 11th.", "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 27610 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Zunyi, 1987: Thursday 11 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": "1987-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-11", "confidence": "determinate" } ], "quote": "In Zunyi, Vaṭa Sāvitrī Vrata 1987 falls on Thursday 11 June. Pūrṇimā runs from 09:14 on Thu 11 Jun to 05:49 on Fri 12 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-06-14", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17346, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-06-14T18:51:52+09:00", "utc": "1987-06-14T09:51:52Z", "ms": 550662712397.5166 }, "end": { "local": "1987-06-15T15:33:46+09:00", "utc": "1987-06-15T06:33:46Z", "ms": 550737225657.1362 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-14T18:51:52+09:00", "utc": "1987-06-14T09:51:52Z", "ms": 550662712397.5166 }, "end": { "local": "1987-06-15T15:33:46+09:00", "utc": "1987-06-15T06:33:46Z", "ms": 550737225657.1362 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-06-14", "window": { "start": { "local": "1987-06-14T23:40:58+09:00", "utc": "1987-06-14T14:40:58Z", "ms": 550680058479.498 }, "end": { "local": "1987-06-14T23:40:58+09:00", "utc": "1987-06-14T14:40:58Z", "ms": 550680058479.498 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-06-15", "window": { "start": { "local": "1987-06-16T00:27:08+09:00", "utc": "1987-06-15T15:27:08Z", "ms": 550769227801.5513 }, "end": { "local": "1987-06-16T00:27:08+09:00", "utc": "1987-06-15T15:27:08Z", "ms": 550769227801.5513 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:52 on Sun 14 Jun to 15:34 on Mon 15 Jun.", "fact": "1987-06-14T09:51:52Z → 1987-06-15T06:33:46Z" }, { "step": "kaala", "text": "Moonrise is at 23:41 on the 14th and 00:27 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 14th and is not on the 15th.", "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 17346 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Sunday 14 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": "1987-06-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-14", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Sunday 14 June. Caturthī runs from 18:52 on Sun 14 Jun to 15:34 on Mon 15 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-06-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-06-22", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1455, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-06-21T07:21:34+09:00", "utc": "1987-06-20T22:21:34Z", "ms": 551226094131.0597 }, "end": { "local": "1987-06-22T08:03:48+09:00", "utc": "1987-06-21T23:03:48Z", "ms": 551315027852.3103 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-21T07:21:34+09:00", "utc": "1987-06-20T22:21:34Z", "ms": 551226094131.0597 }, "end": { "local": "1987-06-22T08:03:48+09:00", "utc": "1987-06-21T23:03:48Z", "ms": 551315027852.3103 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-06-21", "window": { "start": { "local": "1987-06-21T06:57:19+09:00", "utc": "1987-06-20T21:57:19Z", "ms": 551224639277.6082 }, "end": { "local": "1987-06-21T06:57:19+09:00", "utc": "1987-06-20T21:57:19Z", "ms": 551224639277.6082 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-06-22", "window": { "start": { "local": "1987-06-22T06:57:32+09:00", "utc": "1987-06-21T21:57:32Z", "ms": 551311051832.7115 }, "end": { "local": "1987-06-22T06:57:32+09:00", "utc": "1987-06-21T21:57:32Z", "ms": 551311051832.7115 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:22 on Sun 21 Jun to 08:04 on Mon 22 Jun.", "fact": "1987-06-20T22:21:34Z → 1987-06-21T23:03:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:57 on the 21st and 06:58 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 1455 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Zunyi, 1987: Monday 22 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": "1987-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-22", "confidence": "determinate" } ], "quote": "In Zunyi, Yoginī Ekādaśī 1987 falls on Monday 22 June. Ekādaśī runs from 07:22 on Sun 21 Jun to 08:04 on Mon 22 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-06-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-06-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36455, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-06-23T09:12:39+09:00", "utc": "1987-06-23T00:12:39Z", "ms": 551405559300.7479 }, "end": { "local": "1987-06-24T10:43:35+09:00", "utc": "1987-06-24T01:43:35Z", "ms": 551497415001.0651 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-23T09:12:39+09:00", "utc": "1987-06-23T00:12:39Z", "ms": 551405559300.7479 }, "end": { "local": "1987-06-24T10:43:35+09:00", "utc": "1987-06-24T01:43:35Z", "ms": 551497415001.0651 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-06-23", "window": { "start": { "local": "1987-06-23T20:50:59+09:00", "utc": "1987-06-23T11:50:59Z", "ms": 551447458916.964 }, "end": { "local": "1987-06-23T22:11:55+09:00", "utc": "1987-06-23T13:11:55Z", "ms": 551452315074.5809 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1987-06-24", "window": { "start": { "local": "1987-06-24T20:51:10+09:00", "utc": "1987-06-24T11:51:10Z", "ms": 551533869702.9473 }, "end": { "local": "1987-06-24T22:12:07+09:00", "utc": "1987-06-24T13:12:07Z", "ms": 551538726509.7148 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:13 on Tue 23 Jun to 10:44 on Wed 24 Jun.", "fact": "1987-06-23T00:12:39Z → 1987-06-24T01:43:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:51–22:12 on the 23rd, 20:51–22:12 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 81 of 81 minutes on the 23rd and 0 of 81 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 36455 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Tuesday 23 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": "1987-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-23", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Tuesday 23 June. Trayodaśī runs from 09:13 on Tue 23 Jun to 10:44 on Wed 24 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-06-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30305, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-06-24T10:43:35+09:00", "utc": "1987-06-24T01:43:35Z", "ms": 551497415001.0651 }, "end": { "local": "1987-06-25T12:32:43+09:00", "utc": "1987-06-25T03:32:43Z", "ms": 551590363027.3193 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-24T10:43:35+09:00", "utc": "1987-06-24T01:43:35Z", "ms": 551497415001.0651 }, "end": { "local": "1987-06-25T12:32:43+09:00", "utc": "1987-06-25T03:32:43Z", "ms": 551590363027.3193 } }, "kaala": "nishita", "days": [ { "local_date": "1987-06-23", "window": { "start": { "local": "1987-06-24T01:30:30+09:00", "utc": "1987-06-23T16:30:30Z", "ms": 551464229508.0275 }, "end": { "local": "1987-06-24T02:18:30+09:00", "utc": "1987-06-23T17:18:30Z", "ms": 551467109508.0275 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-06-24", "window": { "start": { "local": "1987-06-25T01:30:43+09:00", "utc": "1987-06-24T16:30:43Z", "ms": 551550642728.3257 }, "end": { "local": "1987-06-25T02:18:43+09:00", "utc": "1987-06-24T17:18:43Z", "ms": 551553522728.3257 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:44 on Wed 24 Jun to 12:33 on Thu 25 Jun.", "fact": "1987-06-24T01:43:35Z → 1987-06-25T03:32:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:30–02:18 on the 23rd, 01:31–02:19 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "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 30305 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Wednesday 24 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": "1987-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-24", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Wednesday 24 June. Caturdaśī runs from 10:44 on Wed 24 Jun to 12:33 on Thu 25 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9221, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1987-06-27T16:52:53+09:00", "utc": "1987-06-27T07:52:53Z", "ms": 551778773187.3103 }, "end": { "local": "1987-06-28T19:17:09+09:00", "utc": "1987-06-28T10:17:09Z", "ms": 551873829361.1504 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-27T16:52:53+09:00", "utc": "1987-06-27T07:52:53Z", "ms": 551778773187.3103 }, "end": { "local": "1987-06-28T19:17:09+09:00", "utc": "1987-06-28T10:17:09Z", "ms": 551873829361.1504 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-27", "window": { "start": { "local": "1987-06-27T13:31:12+09:00", "utc": "1987-06-27T04:31:12Z", "ms": 551766672483.76 }, "end": { "local": "1987-06-27T14:19:12+09:00", "utc": "1987-06-27T05:19:12Z", "ms": 551769552483.76 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-06-28", "window": { "start": { "local": "1987-06-28T13:31:25+09:00", "utc": "1987-06-28T04:31:25Z", "ms": 551853084731.451 }, "end": { "local": "1987-06-28T14:19:25+09:00", "utc": "1987-06-28T05:19:25Z", "ms": 551855964731.451 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 16:53 on Sat 27 Jun to 19:17 on Sun 28 Jun.", "fact": "1987-06-27T07:52:53Z → 1987-06-28T10:17:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:31–14:19 on the 27th, 13:31–14:19 on the 28th.", "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 27th and 48 of 48 on the 28th.", "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 9221 s" }, { "step": "ruling", "text": "Rathayātrā, Zunyi, 1987: Sunday 28 June.", "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": "1987-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-28", "confidence": "determinate" } ], "quote": "In Zunyi, Rathayātrā 1987 falls on Sunday 28 June. Dvitīyā runs from 16:53 on Sat 27 Jun to 19:17 on Sun 28 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-06-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26692, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-06-29T21:44:29+09:00", "utc": "1987-06-29T12:44:29Z", "ms": 551969068603.2649 }, "end": { "local": "1987-07-01T00:07:38+09:00", "utc": "1987-06-30T15:07:38Z", "ms": 552064058250.6744 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-06-29T21:44:29+09:00", "utc": "1987-06-29T12:44:29Z", "ms": 551969068603.2649 }, "end": { "local": "1987-07-01T00:07:38+09:00", "utc": "1987-06-30T15:07:38Z", "ms": 552064058250.6744 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-29", "window": { "start": { "local": "1987-06-29T13:31:37+09:00", "utc": "1987-06-29T04:31:37Z", "ms": 551939496795.2632 }, "end": { "local": "1987-06-29T14:19:37+09:00", "utc": "1987-06-29T05:19:37Z", "ms": 551942376795.2632 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-06-30", "window": { "start": { "local": "1987-06-30T13:31:49+09:00", "utc": "1987-06-30T04:31:49Z", "ms": 552025908649.6006 }, "end": { "local": "1987-06-30T14:19:49+09:00", "utc": "1987-06-30T05:19:49Z", "ms": 552028788649.6006 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:44 on Mon 29 Jun to 00:08 on Wed 1 Jul.", "fact": "1987-06-29T12:44:29Z → 1987-06-30T15:07:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:32–14:20 on the 29th, 13:32–14:20 on the 30th.", "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 29th and 48 of 48 on the 30th.", "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 26692 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Tuesday 30 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": "1987-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-06-30", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Tuesday 30 June. Caturthī runs from 21:44 on Mon 29 Jun to 00:08 on Wed 1 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-06-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35270, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-07-01T00:07:38+09:00", "utc": "1987-06-30T15:07:38Z", "ms": 552064058250.6744 }, "end": { "local": "1987-07-02T02:17:23+09:00", "utc": "1987-07-01T17:17:23Z", "ms": 552158242762.069 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-01T00:07:38+09:00", "utc": "1987-06-30T15:07:38Z", "ms": 552064058250.6744 }, "end": { "local": "1987-07-02T02:17:23+09:00", "utc": "1987-07-01T17:17:23Z", "ms": 552158242762.069 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-06-30", "window": { "start": { "local": "1987-06-30T13:31:49+09:00", "utc": "1987-06-30T04:31:49Z", "ms": 552025908649.6006 }, "end": { "local": "1987-06-30T14:19:49+09:00", "utc": "1987-06-30T05:19:49Z", "ms": 552028788649.6006 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-07-01", "window": { "start": { "local": "1987-07-01T13:32:00+09:00", "utc": "1987-07-01T04:32:00Z", "ms": 552112320269.4572 }, "end": { "local": "1987-07-01T14:20:00+09:00", "utc": "1987-07-01T05:20:00Z", "ms": 552115200269.4572 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:08 on Wed 1 Jul to 02:17 on Thu 2 Jul.", "fact": "1987-06-30T15:07:38Z → 1987-07-01T17:17:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:32–14:20 on the 30th, 13:32–14:20 on the 1st.", "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 30th and 48 of 48 on the 1st.", "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 35270 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Zunyi, 1987: Wednesday 1 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": "1987-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-01", "confidence": "determinate" } ], "quote": "In Zunyi, Skanda Pañcamī 1987 falls on Wednesday 1 July. Pañcamī runs from 00:08 on Wed 1 Jul to 02:17 on Thu 2 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29892, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-07-03T04:03:07+09:00", "utc": "1987-07-02T19:03:07Z", "ms": 552250987376.172 }, "end": { "local": "1987-07-04T05:14:21+09:00", "utc": "1987-07-03T20:14:21Z", "ms": 552341661094.1896 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-03T04:03:07+09:00", "utc": "1987-07-02T19:03:07Z", "ms": 552250987376.172 }, "end": { "local": "1987-07-04T05:14:21+09:00", "utc": "1987-07-03T20:14:21Z", "ms": 552341661094.1896 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-07-03", "window": { "start": { "local": "1987-07-03T13:32:23+09:00", "utc": "1987-07-03T04:32:23Z", "ms": 552285142709.7883 }, "end": { "local": "1987-07-03T14:20:23+09:00", "utc": "1987-07-03T05:20:23Z", "ms": 552288022709.7883 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-07-04", "window": { "start": { "local": "1987-07-04T13:32:33+09:00", "utc": "1987-07-04T04:32:33Z", "ms": 552371553485.0746 }, "end": { "local": "1987-07-04T14:20:33+09:00", "utc": "1987-07-04T05:20:33Z", "ms": 552374433485.0746 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:03 on Fri 3 Jul to 05:14 on Sat 4 Jul.", "fact": "1987-07-02T19:03:07Z → 1987-07-03T20:14:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:32–14:20 on the 3rd, 13:33–14:21 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "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 29892 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Zunyi, 1987: Friday 3 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": "1987-07-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-03", "confidence": "determinate" } ], "quote": "In Zunyi, Vivasvat Saptamī 1987 falls on Friday 3 July. Saptamī runs from 04:03 on Fri 3 Jul to 05:14 on Sat 4 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-07-07", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10375, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-07-07T04:09:35+09:00", "utc": "1987-07-06T19:09:35Z", "ms": 552596975340.053 }, "end": { "local": "1987-07-08T02:09:32+09:00", "utc": "1987-07-07T17:09:32Z", "ms": 552676171530.9219 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-07T04:09:35+09:00", "utc": "1987-07-06T19:09:35Z", "ms": 552596975340.053 }, "end": { "local": "1987-07-08T02:09:32+09:00", "utc": "1987-07-07T17:09:32Z", "ms": 552676171530.9219 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-07-07", "window": { "start": { "local": "1987-07-07T07:02:31+09:00", "utc": "1987-07-06T22:02:31Z", "ms": 552607350674.0126 }, "end": { "local": "1987-07-07T07:02:31+09:00", "utc": "1987-07-06T22:02:31Z", "ms": 552607350674.0126 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-07-08", "window": { "start": { "local": "1987-07-08T07:02:57+09:00", "utc": "1987-07-07T22:02:57Z", "ms": 552693776549.7988 }, "end": { "local": "1987-07-08T07:02:57+09:00", "utc": "1987-07-07T22:02:57Z", "ms": 552693776549.7988 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:10 on Tue 7 Jul to 02:10 on Wed 8 Jul.", "fact": "1987-07-06T19:09:35Z → 1987-07-07T17:09:32Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 7th and 07:03 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not 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 10375 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Zunyi, 1987: Tuesday 7 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": "1987-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-07", "confidence": "determinate" } ], "quote": "In Zunyi, Hariśayanī Ekādaśī 1987 falls on Tuesday 7 July. Ekādaśī runs from 04:10 on Tue 7 Jul to 02:10 on Wed 8 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-07-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-07-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-08", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2512, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-07-08T23:26:44+09:00", "utc": "1987-07-08T14:26:44Z", "ms": 552752804266.0581 }, "end": { "local": "1987-07-09T20:09:29+09:00", "utc": "1987-07-09T11:09:29Z", "ms": 552827369350.7814 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-08T23:26:44+09:00", "utc": "1987-07-08T14:26:44Z", "ms": 552752804266.0581 }, "end": { "local": "1987-07-09T20:09:29+09:00", "utc": "1987-07-09T11:09:29Z", "ms": 552827369350.7814 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-07-08", "window": { "start": { "local": "1987-07-08T20:51:30+09:00", "utc": "1987-07-08T11:51:30Z", "ms": 552743489735.52 }, "end": { "local": "1987-07-08T22:13:05+09:00", "utc": "1987-07-08T13:13:05Z", "ms": 552748384836.9854 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "1987-07-09", "window": { "start": { "local": "1987-07-09T20:51:21+09:00", "utc": "1987-07-09T11:51:21Z", "ms": 552829881220.9415 }, "end": { "local": "1987-07-09T22:13:01+09:00", "utc": "1987-07-09T13:13:01Z", "ms": 552834781056.4136 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:27 on Wed 8 Jul to 20:09 on Thu 9 Jul.", "fact": "1987-07-08T14:26:44Z → 1987-07-09T11:09:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:51–22:13 on the 8th, 20:51–22:13 on the 9th.", "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 82 minutes on the 8th and 0 of 82 on the 9th.", "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 2512 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Wednesday 8 July.", "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": "1987-07-08", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-08", "confidence": "boundary" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Wednesday 8 July. Trayodaśī runs from 23:27 on Wed 8 Jul to 20:09 on Thu 9 Jul, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-07-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5876, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 } }, "kaala": "sayahna", "days": [ { "local_date": "1987-07-10", "window": { "start": { "local": "1987-07-10T18:05:43+09:00", "utc": "1987-07-10T09:05:43Z", "ms": 552906343073.5474 }, "end": { "local": "1987-07-10T20:51:11+09:00", "utc": "1987-07-10T11:51:11Z", "ms": 552916271345.1887 } }, "covered_min": 165, "window_min": 165, "qualifies": true }, { "local_date": "1987-07-11", "window": { "start": { "local": "1987-07-11T18:05:40+09:00", "utc": "1987-07-11T09:05:40Z", "ms": 552992739586.9741 }, "end": { "local": "1987-07-11T20:51:00+09:00", "utc": "1987-07-11T11:51:00Z", "ms": 553002660109.8438 } }, "covered_min": 0, "window_min": 165, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul.", "fact": "1987-07-10T07:27:47Z → 1987-07-11T03:32:37Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 18:06–20:51 on the 10th, 18:06–20:51 on the 11th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 165 of 165 minutes on the 10th and 0 of 165 on the 11th.", "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 5876 s" }, { "step": "ruling", "text": "Kokilā Vrata, Zunyi, 1987: Friday 10 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": "1987-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-10", "confidence": "determinate" } ], "quote": "In Zunyi, Kokilā Vrata 1987 falls on Friday 10 July. Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15804, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-07-10", "window": { "start": { "local": "1987-07-10T20:51:11+09:00", "utc": "1987-07-10T11:51:11Z", "ms": 552916271345.1887 }, "end": { "local": "1987-07-10T22:12:56+09:00", "utc": "1987-07-10T13:12:56Z", "ms": 552921176165.2296 } }, "covered_min": 82, "window_min": 82, "qualifies": true }, { "local_date": "1987-07-11", "window": { "start": { "local": "1987-07-11T20:51:00+09:00", "utc": "1987-07-11T11:51:00Z", "ms": 553002660109.8438 }, "end": { "local": "1987-07-11T22:12:50+09:00", "utc": "1987-07-11T13:12:50Z", "ms": 553007570161.561 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul.", "fact": "1987-07-10T07:27:47Z → 1987-07-11T03:32:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:51–22:13 on the 10th, 20:51–22:13 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 82 of 82 minutes on the 10th and 0 of 82 on the 11th.", "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 15804 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Zunyi, 1987: Friday 10 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": "1987-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-10", "confidence": "determinate" } ], "quote": "In Zunyi, Śiva Śayanotsava 1987 falls on Friday 10 July. Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9779, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 } }, "kaala": "udaya-3", "days": [ { "local_date": "1987-07-10", "window": { "start": { "local": "1987-07-10T07:03:50+09:00", "utc": "1987-07-09T22:03:50Z", "ms": 552866629986.9817 }, "end": { "local": "1987-07-10T09:49:18+09:00", "utc": "1987-07-10T00:49:18Z", "ms": 552876558258.623 } }, "covered_min": 0, "window_min": 165, "qualifies": false }, { "local_date": "1987-07-11", "window": { "start": { "local": "1987-07-11T07:04:17+09:00", "utc": "1987-07-10T22:04:17Z", "ms": 552953057495.4955 }, "end": { "local": "1987-07-11T09:49:38+09:00", "utc": "1987-07-11T00:49:38Z", "ms": 552962978018.3651 } }, "covered_min": 165, "window_min": 165, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul.", "fact": "1987-07-10T07:27:47Z → 1987-07-11T03:32:37Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 07:04–09:49 on the 10th, 07:04–09:50 on the 11th.", "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 0 of 165 minutes on the 10th and 165 of 165 on the 11th.", "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 9779 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Zunyi, 1987: Saturday 11 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": "1987-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-11", "confidence": "determinate" } ], "quote": "In Zunyi, Vyāsa Pūjā 1987 falls on Saturday 11 July. Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3662, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1987-07-10T16:27:47+09:00", "utc": "1987-07-10T07:27:47Z", "ms": 552900466926.5358 }, "end": { "local": "1987-07-11T12:32:37+09:00", "utc": "1987-07-11T03:32:37Z", "ms": 552972756794.729 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-07-10", "window": { "start": { "local": "1987-07-10T13:33:31+09:00", "utc": "1987-07-10T04:33:31Z", "ms": 552890010666.0852 }, "end": { "local": "1987-07-10T14:21:31+09:00", "utc": "1987-07-10T05:21:31Z", "ms": 552892890666.0852 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-07-11", "window": { "start": { "local": "1987-07-11T13:33:39+09:00", "utc": "1987-07-11T04:33:39Z", "ms": 552976418802.6697 }, "end": { "local": "1987-07-11T14:21:39+09:00", "utc": "1987-07-11T05:21:39Z", "ms": 552979298802.6697 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul.", "fact": "1987-07-10T07:27:47Z → 1987-07-11T03:32:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:34–14:22 on the 10th, 13:34–14:22 on the 11th.", "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 10th and 0 of 48 on the 11th.", "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 3662 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Zunyi, 1987: Saturday 11 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": "1987-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-11", "confidence": "boundary" } ], "quote": "In Zunyi, Guru Pūrṇimā 1987 falls on Saturday 11 July. Pūrṇimā runs from 16:28 on Fri 10 Jul to 12:33 on Sat 11 Jul, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23385, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1987-07-12T08:35:22+09:00", "utc": "1987-07-11T23:35:22Z", "ms": 553044921997.3588 }, "end": { "local": "1987-07-13T04:47:18+09:00", "utc": "1987-07-12T19:47:18Z", "ms": 553117638238.8036 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-12T08:35:22+09:00", "utc": "1987-07-11T23:35:22Z", "ms": 553044921997.3588 }, "end": { "local": "1987-07-13T04:47:18+09:00", "utc": "1987-07-12T19:47:18Z", "ms": 553117638238.8036 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-07-11", "window": { "start": { "local": "1987-07-11T21:26:03+09:00", "utc": "1987-07-11T12:26:03Z", "ms": 553004763453.9154 }, "end": { "local": "1987-07-11T21:26:03+09:00", "utc": "1987-07-11T12:26:03Z", "ms": 553004763453.9154 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-07-12", "window": { "start": { "local": "1987-07-12T22:17:34+09:00", "utc": "1987-07-12T13:17:34Z", "ms": 553094253651.5676 }, "end": { "local": "1987-07-12T22:17:34+09:00", "utc": "1987-07-12T13:17:34Z", "ms": 553094253651.5676 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 08:35 on Sun 12 Jul to 04:47 on Mon 13 Jul.", "fact": "1987-07-11T23:35:22Z → 1987-07-12T19:47:18Z" }, { "step": "kaala", "text": "Moonrise is at 21:26 on the 11th and 22:18 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 11th and is on the 12th.", "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 23385 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Zunyi, 1987: Sunday 12 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": "1987-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-12", "confidence": "determinate" } ], "quote": "In Zunyi, Aśūnya Śayana Vrata (Āṣāḍha) 1987 falls on Sunday 12 July. Dvitīyā runs from 08:35 on Sun 12 Jul to 04:47 on Mon 13 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-07-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-13", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4672, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-07-14T01:19:05+09:00", "utc": "1987-07-13T16:19:05Z", "ms": 553191545054.4385 }, "end": { "local": "1987-07-14T22:20:15+09:00", "utc": "1987-07-14T13:20:15Z", "ms": 553267214947.7858 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-14T01:19:05+09:00", "utc": "1987-07-13T16:19:05Z", "ms": 553191545054.4385 }, "end": { "local": "1987-07-14T22:20:15+09:00", "utc": "1987-07-14T13:20:15Z", "ms": 553267214947.7858 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-07-13", "window": { "start": { "local": "1987-07-13T23:00:53+09:00", "utc": "1987-07-13T14:00:53Z", "ms": 553183252648.4841 }, "end": { "local": "1987-07-13T23:00:53+09:00", "utc": "1987-07-13T14:00:53Z", "ms": 553183252648.4841 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-07-14", "window": { "start": { "local": "1987-07-14T23:38:07+09:00", "utc": "1987-07-14T14:38:07Z", "ms": 553271886569.834 }, "end": { "local": "1987-07-14T23:38:07+09:00", "utc": "1987-07-14T14:38:07Z", "ms": 553271886569.834 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:19 on Tue 14 Jul to 22:20 on Tue 14 Jul.", "fact": "1987-07-13T16:19:05Z → 1987-07-14T13:20:15Z" }, { "step": "kaala", "text": "Moonrise is at 23:01 on the 13th and 23:38 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 13th and is not on the 14th.", "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 4672 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Monday 13 July.", "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": "1987-07-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-13", "confidence": "boundary" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Monday 13 July. Caturthī runs from 01:19 on Tue 14 Jul to 22:20 on Tue 14 Jul, and is current at moonrise on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-07-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-07-21", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37894, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-07-20T19:00:31+09:00", "utc": "1987-07-20T10:00:31Z", "ms": 553773631291.1659 }, "end": { "local": "1987-07-21T20:38:13+09:00", "utc": "1987-07-21T11:38:13Z", "ms": 553865892908.8328 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-20T19:00:31+09:00", "utc": "1987-07-20T10:00:31Z", "ms": 553773631291.1659 }, "end": { "local": "1987-07-21T20:38:13+09:00", "utc": "1987-07-21T11:38:13Z", "ms": 553865892908.8328 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-07-21", "window": { "start": { "local": "1987-07-21T07:09:16+09:00", "utc": "1987-07-20T22:09:16Z", "ms": 553817355766.2329 }, "end": { "local": "1987-07-21T07:09:16+09:00", "utc": "1987-07-20T22:09:16Z", "ms": 553817355766.2329 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-07-22", "window": { "start": { "local": "1987-07-22T07:09:47+09:00", "utc": "1987-07-21T22:09:47Z", "ms": 553903787340.8418 }, "end": { "local": "1987-07-22T07:09:47+09:00", "utc": "1987-07-21T22:09:47Z", "ms": 553903787340.8418 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:01 on Mon 20 Jul to 20:38 on Tue 21 Jul.", "fact": "1987-07-20T10:00:31Z → 1987-07-21T11:38:13Z" }, { "step": "kaala", "text": "Sunrise is at 07:09 on the 21st and 07:10 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not 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 37894 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Zunyi, 1987: Tuesday 21 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": "1987-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-21", "confidence": "determinate" } ], "quote": "In Zunyi, Kāmikā Ekādaśī 1987 falls on Tuesday 21 July. Ekādaśī runs from 19:01 on Mon 20 Jul to 20:38 on Tue 21 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-07-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-07-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1594, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-07-22T22:37:05+09:00", "utc": "1987-07-22T13:37:05Z", "ms": 553959424812.4827 }, "end": { "local": "1987-07-24T00:50:18+09:00", "utc": "1987-07-23T15:50:18Z", "ms": 554053818099.6127 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-22T22:37:05+09:00", "utc": "1987-07-22T13:37:05Z", "ms": 553959424812.4827 }, "end": { "local": "1987-07-24T00:50:18+09:00", "utc": "1987-07-23T15:50:18Z", "ms": 554053818099.6127 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-07-22", "window": { "start": { "local": "1987-07-22T20:47:28+09:00", "utc": "1987-07-22T11:47:28Z", "ms": 553952847676.7078 }, "end": { "local": "1987-07-22T22:10:31+09:00", "utc": "1987-07-22T13:10:31Z", "ms": 553957830536.007 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "1987-07-23", "window": { "start": { "local": "1987-07-23T20:47:00+09:00", "utc": "1987-07-23T11:47:00Z", "ms": 554039220393.351 }, "end": { "local": "1987-07-23T22:10:11+09:00", "utc": "1987-07-23T13:10:11Z", "ms": 554044211151.5739 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:37 on Wed 22 Jul to 00:50 on Fri 24 Jul.", "fact": "1987-07-22T13:37:05Z → 1987-07-23T15:50:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:47–22:11 on the 22nd, 20:47–22:10 on the 23rd.", "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 83 minutes on the 22nd and 83 of 83 on the 23rd.", "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 1594 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Thursday 23 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": "1987-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-23", "confidence": "boundary" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Thursday 23 July. Trayodaśī runs from 22:37 on Wed 22 Jul to 00:50 on Fri 24 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-07-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2678, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-07-24T00:50:18+09:00", "utc": "1987-07-23T15:50:18Z", "ms": 554053818099.6127 }, "end": { "local": "1987-07-25T03:12:05+09:00", "utc": "1987-07-24T18:12:05Z", "ms": 554148725183.8779 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-24T00:50:18+09:00", "utc": "1987-07-23T15:50:18Z", "ms": 554053818099.6127 }, "end": { "local": "1987-07-25T03:12:05+09:00", "utc": "1987-07-24T18:12:05Z", "ms": 554148725183.8779 } }, "kaala": "nishita", "days": [ { "local_date": "1987-07-23", "window": { "start": { "local": "1987-07-24T01:34:56+09:00", "utc": "1987-07-23T16:34:56Z", "ms": 554056495736.6868 }, "end": { "local": "1987-07-24T02:22:56+09:00", "utc": "1987-07-23T17:22:56Z", "ms": 554059375736.6868 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-07-24", "window": { "start": { "local": "1987-07-25T01:34:57+09:00", "utc": "1987-07-24T16:34:57Z", "ms": 554142897497.2075 }, "end": { "local": "1987-07-25T02:22:57+09:00", "utc": "1987-07-24T17:22:57Z", "ms": 554145777497.2075 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:50 on Fri 24 Jul to 03:12 on Sat 25 Jul.", "fact": "1987-07-23T15:50:18Z → 1987-07-24T18:12:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:35–02:23 on the 23rd, 01:35–02:23 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "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 2678 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Thursday 23 July.", "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": "1987-07-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-24", "confidence": "boundary" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Thursday 23 July. Caturdaśī runs from 00:50 on Fri 24 Jul to 03:12 on Sat 25 Jul 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/zunyi/festivals/1987/shivaratri?on=1987-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3993, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-07-28T10:20:54+09:00", "utc": "1987-07-28T01:20:54Z", "ms": 554433653894.1215 }, "end": { "local": "1987-07-29T12:28:08+09:00", "utc": "1987-07-29T03:28:08Z", "ms": 554527688078.2343 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-28T10:20:54+09:00", "utc": "1987-07-28T01:20:54Z", "ms": 554433653894.1215 }, "end": { "local": "1987-07-29T12:28:08+09:00", "utc": "1987-07-29T03:28:08Z", "ms": 554527688078.2343 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-07-28", "window": { "start": { "local": "1987-07-28T13:34:42+09:00", "utc": "1987-07-28T04:34:42Z", "ms": 554445282363.4862 }, "end": { "local": "1987-07-28T14:22:42+09:00", "utc": "1987-07-28T05:22:42Z", "ms": 554448162363.4862 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-07-29", "window": { "start": { "local": "1987-07-29T13:34:41+09:00", "utc": "1987-07-29T04:34:41Z", "ms": 554531681098.8884 }, "end": { "local": "1987-07-29T14:22:41+09:00", "utc": "1987-07-29T05:22:41Z", "ms": 554534561098.8884 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:21 on Tue 28 Jul to 12:28 on Wed 29 Jul.", "fact": "1987-07-28T01:20:54Z → 1987-07-29T03:28:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:35–14:23 on the 28th, 13:35–14:23 on the 29th.", "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 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 3993 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Zunyi, 1987: Tuesday 28 July.", "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": "1987-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-28", "confidence": "determinate" } ], "quote": "In Zunyi, Madhusravā Tṛtīyā (Hariyali Teej) 1987 falls on Tuesday 28 July. Tṛtīyā runs from 10:21 on Tue 28 Jul to 12:28 on Wed 29 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-07-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 346, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-07-29T12:28:08+09:00", "utc": "1987-07-29T03:28:08Z", "ms": 554527688078.2343 }, "end": { "local": "1987-07-30T14:16:53+09:00", "utc": "1987-07-30T05:16:53Z", "ms": 554620612866.137 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-29T12:28:08+09:00", "utc": "1987-07-29T03:28:08Z", "ms": 554527688078.2343 }, "end": { "local": "1987-07-30T14:16:53+09:00", "utc": "1987-07-30T05:16:53Z", "ms": 554620612866.137 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-07-29", "window": { "start": { "local": "1987-07-29T13:34:41+09:00", "utc": "1987-07-29T04:34:41Z", "ms": 554531681098.8884 }, "end": { "local": "1987-07-29T14:22:41+09:00", "utc": "1987-07-29T05:22:41Z", "ms": 554534561098.8884 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-07-30", "window": { "start": { "local": "1987-07-30T13:34:39+09:00", "utc": "1987-07-30T04:34:39Z", "ms": 554618079223.8285 }, "end": { "local": "1987-07-30T14:22:39+09:00", "utc": "1987-07-30T05:22:39Z", "ms": 554620959223.8285 } }, "covered_min": 42, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:28 on Wed 29 Jul to 14:17 on Thu 30 Jul.", "fact": "1987-07-29T03:28:08Z → 1987-07-30T05:16:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:35–14:23 on the 29th, 13:35–14:23 on the 30th.", "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 29th and 42 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "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 346 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Wednesday 29 July.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1987-07-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-29", "confidence": "boundary" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Wednesday 29 July. Caturthī runs from 12:28 on Wed 29 Jul to 14:17 on Thu 30 Jul and covers all of madhyāhna that midday. It also reaches the next midday for 42 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/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-07-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 346, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-07-30T14:16:53+09:00", "utc": "1987-07-30T05:16:53Z", "ms": 554620612866.137 }, "end": { "local": "1987-07-31T15:39:25+09:00", "utc": "1987-07-31T06:39:25Z", "ms": 554711964913.5269 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-07-30T14:16:53+09:00", "utc": "1987-07-30T05:16:53Z", "ms": 554620612866.137 }, "end": { "local": "1987-07-31T15:39:25+09:00", "utc": "1987-07-31T06:39:25Z", "ms": 554711964913.5269 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-07-30", "window": { "start": { "local": "1987-07-30T13:34:39+09:00", "utc": "1987-07-30T04:34:39Z", "ms": 554618079223.8285 }, "end": { "local": "1987-07-30T14:22:39+09:00", "utc": "1987-07-30T05:22:39Z", "ms": 554620959223.8285 } }, "covered_min": 6, "window_min": 48, "qualifies": true }, { "local_date": "1987-07-31", "window": { "start": { "local": "1987-07-31T13:34:37+09:00", "utc": "1987-07-31T04:34:37Z", "ms": 554704476733.93 }, "end": { "local": "1987-07-31T14:22:37+09:00", "utc": "1987-07-31T05:22:37Z", "ms": 554707356733.93 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:17 on Thu 30 Jul to 15:39 on Fri 31 Jul.", "fact": "1987-07-30T05:16:53Z → 1987-07-31T06:39:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:35–14:23 on the 30th, 13:35–14:23 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 6 of 48 minutes on the 30th and 48 of 48 on the 31st.", "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 346 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Zunyi, 1987: Friday 31 July.", "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": "1987-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-07-31", "confidence": "determinate" } ], "quote": "In Zunyi, Nāga Pañcamī 1987 falls on Friday 31 July. Pañcamī runs from 14:17 on Thu 30 Jul to 15:39 on Fri 31 Jul and covers all of madhyāhna that midday. It also reaches the previous midday for 6 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-08-06", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9063, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-08-05T12:32:52+09:00", "utc": "1987-08-05T03:32:52Z", "ms": 555132772398.602 }, "end": { "local": "1987-08-06T09:48:54+09:00", "utc": "1987-08-06T00:48:54Z", "ms": 555209334387.3789 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-08-05T12:32:52+09:00", "utc": "1987-08-05T03:32:52Z", "ms": 555132772398.602 }, "end": { "local": "1987-08-06T09:48:54+09:00", "utc": "1987-08-06T00:48:54Z", "ms": 555209334387.3789 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-08-05", "window": { "start": { "local": "1987-08-05T07:17:19+09:00", "utc": "1987-08-04T22:17:19Z", "ms": 555113839297.5479 }, "end": { "local": "1987-08-05T07:17:19+09:00", "utc": "1987-08-04T22:17:19Z", "ms": 555113839297.5479 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-08-06", "window": { "start": { "local": "1987-08-06T07:17:51+09:00", "utc": "1987-08-05T22:17:51Z", "ms": 555200271403.6953 }, "end": { "local": "1987-08-06T07:17:51+09:00", "utc": "1987-08-05T22:17:51Z", "ms": 555200271403.6953 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:33 on Wed 5 Aug to 09:49 on Thu 6 Aug.", "fact": "1987-08-05T03:32:52Z → 1987-08-06T00:48:54Z" }, { "step": "kaala", "text": "Sunrise is at 07:17 on the 5th and 07:18 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 9063 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Zunyi, 1987: Thursday 6 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": "1987-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-06", "confidence": "determinate" } ], "quote": "In Zunyi, Putradā Ekādaśī 1987 falls on Thursday 6 August. Ekādaśī runs from 12:33 on Wed 5 Aug to 09:49 on Thu 6 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-08-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13514, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-08-06T09:48:54+09:00", "utc": "1987-08-06T00:48:54Z", "ms": 555209334387.3789 }, "end": { "local": "1987-08-07T06:33:47+09:00", "utc": "1987-08-06T21:33:47Z", "ms": 555284027347.9393 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-08-06T09:48:54+09:00", "utc": "1987-08-06T00:48:54Z", "ms": 555209334387.3789 }, "end": { "local": "1987-08-07T06:33:47+09:00", "utc": "1987-08-06T21:33:47Z", "ms": 555284027347.9393 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-06", "window": { "start": { "local": "1987-08-06T13:34:09+09:00", "utc": "1987-08-06T04:34:09Z", "ms": 555222848802.5095 }, "end": { "local": "1987-08-06T14:22:09+09:00", "utc": "1987-08-06T05:22:09Z", "ms": 555225728802.5095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-07", "window": { "start": { "local": "1987-08-07T13:34:02+09:00", "utc": "1987-08-07T04:34:02Z", "ms": 555309241999.6371 }, "end": { "local": "1987-08-07T14:22:02+09:00", "utc": "1987-08-07T05:22:02Z", "ms": 555312121999.6371 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:49 on Thu 6 Aug to 06:34 on Fri 7 Aug.", "fact": "1987-08-06T00:48:54Z → 1987-08-06T21:33:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:34–14:22 on the 6th, 13:34–14:22 on the 7th.", "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 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 13514 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Zunyi, 1987: Thursday 6 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": "1987-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-06", "confidence": "determinate" } ], "quote": "In Zunyi, Dāmodara Dvādaśī 1987 falls on Thursday 6 August. Dvādaśī runs from 09:49 on Thu 6 Aug to 06:34 on Fri 7 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-08-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17606, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-08-07T06:33:47+09:00", "utc": "1987-08-06T21:33:47Z", "ms": 555284027347.9393 }, "end": { "local": "1987-08-08T02:56:37+09:00", "utc": "1987-08-07T17:56:37Z", "ms": 555357396936.3254 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-08-07T06:33:47+09:00", "utc": "1987-08-06T21:33:47Z", "ms": 555284027347.9393 }, "end": { "local": "1987-08-08T02:56:37+09:00", "utc": "1987-08-07T17:56:37Z", "ms": 555357396936.3254 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-08-06", "window": { "start": { "local": "1987-08-06T20:38:26+09:00", "utc": "1987-08-06T11:38:26Z", "ms": 555248306201.3237 }, "end": { "local": "1987-08-06T22:03:46+09:00", "utc": "1987-08-06T13:03:46Z", "ms": 555253425827.7676 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1987-08-07", "window": { "start": { "local": "1987-08-07T20:37:41+09:00", "utc": "1987-08-07T11:37:41Z", "ms": 555334660599.6216 }, "end": { "local": "1987-08-07T22:03:11+09:00", "utc": "1987-08-07T13:03:11Z", "ms": 555339790556.6407 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:34 on Fri 7 Aug to 02:57 on Sat 8 Aug.", "fact": "1987-08-06T21:33:47Z → 1987-08-07T17:56:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:38–22:04 on the 6th, 20:38–22:03 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 85 minutes on the 6th and 85 of 85 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 17606 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Friday 7 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": "1987-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-07", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Friday 7 August. Trayodaśī runs from 06:34 on Fri 7 Aug to 02:57 on Sat 8 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6747, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-08-08T23:07:33+09:00", "utc": "1987-08-08T14:07:33Z", "ms": 555430053347.6266 }, "end": { "local": "1987-08-09T19:17:19+09:00", "utc": "1987-08-09T10:17:19Z", "ms": 555502638998.6012 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1987-08-09T09:11:54+09:00", "utc": "1987-08-09T00:11:54Z", "ms": 555466314389.0781 }, "end": { "local": "1987-08-09T19:17:19+09:00", "utc": "1987-08-09T10:17:19Z", "ms": 555502638998.6012 } }, "kaala": "day", "days": [ { "local_date": "1987-08-08", "window": { "start": { "local": "1987-08-08T07:18:55+09:00", "utc": "1987-08-07T22:18:55Z", "ms": 555373135277.2654 }, "end": { "local": "1987-08-09T07:19:27+09:00", "utc": "1987-08-08T22:19:27Z", "ms": 555459567030.7848 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1987-08-09", "window": { "start": { "local": "1987-08-09T07:19:27+09:00", "utc": "1987-08-08T22:19:27Z", "ms": 555459567030.7848 }, "end": { "local": "1987-08-10T07:19:59+09:00", "utc": "1987-08-09T22:19:59Z", "ms": 555545998656.6034 } }, "covered_min": 605, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:08 on Sat 8 Aug to 19:17 on Sun 9 Aug. Its second half begins at 09:12 on Sun 9 Aug.", "fact": "1987-08-08T14:07:33Z → 1987-08-09T10:17:19Z · second half from 1987-08-09T00:11:54Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 07:19 on the 8th, and from 07:19 on the 9th.", "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 0 of 1441 minutes on the 8th and 605 of 1441 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6747 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Zunyi, 1987: Sunday 9 August.", "fact": "confidence: determinate" } ], "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": "1987-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-09", "confidence": "determinate" } ], "quote": "In Zunyi, Rakṣā Bandhana (Rakhi) 1987 falls on Sunday 9 August. The second half of Pūrṇimā runs from 09:12 on Sun 9 Aug to 19:17 on Sun 9 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17732, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-08-08T23:07:33+09:00", "utc": "1987-08-08T14:07:33Z", "ms": 555430053347.6266 }, "end": { "local": "1987-08-09T19:17:19+09:00", "utc": "1987-08-09T10:17:19Z", "ms": 555502638998.6012 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1987-08-08T23:07:33+09:00", "utc": "1987-08-08T14:07:33Z", "ms": 555430053347.6266 }, "end": { "local": "1987-08-09T19:17:19+09:00", "utc": "1987-08-09T10:17:19Z", "ms": 555502638998.6012 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-08", "window": { "start": { "local": "1987-08-08T13:33:55+09:00", "utc": "1987-08-08T04:33:55Z", "ms": 555395634598.1213 }, "end": { "local": "1987-08-08T14:21:55+09:00", "utc": "1987-08-08T05:21:55Z", "ms": 555398514598.1213 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-08-09", "window": { "start": { "local": "1987-08-09T13:33:47+09:00", "utc": "1987-08-09T04:33:47Z", "ms": 555482026607.1658 }, "end": { "local": "1987-08-09T14:21:47+09:00", "utc": "1987-08-09T05:21:47Z", "ms": 555484906607.1658 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:08 on Sat 8 Aug to 19:17 on Sun 9 Aug.", "fact": "1987-08-08T14:07:33Z → 1987-08-09T10:17:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:34–14:22 on the 8th, 13:34–14:22 on the 9th.", "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 8th and 48 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: unstated → only-day · margin 17732 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Zunyi, 1987: Sunday 9 August.", "fact": "confidence: determinate" } ], "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": "1987-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-09", "confidence": "determinate" } ], "quote": "In Zunyi, Ṛṣi Tarpaṇa 1987 falls on Sunday 9 August. Pūrṇimā runs from 23:08 on Sat 8 Aug to 19:17 on Sun 9 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21284, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1987-08-10T15:36:41+09:00", "utc": "1987-08-10T06:36:41Z", "ms": 555575800663.3699 }, "end": { "local": "1987-08-11T12:16:03+09:00", "utc": "1987-08-11T03:16:03Z", "ms": 555650163038.9734 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-10T15:36:41+09:00", "utc": "1987-08-10T06:36:41Z", "ms": 555575800663.3699 }, "end": { "local": "1987-08-11T12:16:03+09:00", "utc": "1987-08-11T03:16:03Z", "ms": 555650163038.9734 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-08-10", "window": { "start": { "local": "1987-08-10T21:31:24+09:00", "utc": "1987-08-10T12:31:24Z", "ms": 555597084379.4879 }, "end": { "local": "1987-08-10T21:31:24+09:00", "utc": "1987-08-10T12:31:24Z", "ms": 555597084379.4879 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-08-11", "window": { "start": { "local": "1987-08-11T22:07:14+09:00", "utc": "1987-08-11T13:07:14Z", "ms": 555685634244.8684 }, "end": { "local": "1987-08-11T22:07:14+09:00", "utc": "1987-08-11T13:07:14Z", "ms": 555685634244.8684 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 15:37 on Mon 10 Aug to 12:16 on Tue 11 Aug.", "fact": "1987-08-10T06:36:41Z → 1987-08-11T03:16:03Z" }, { "step": "kaala", "text": "Moonrise is at 21:31 on the 10th and 22:07 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 10th and is not on the 11th.", "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 21284 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Zunyi, 1987: Monday 10 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": "1987-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-10", "confidence": "determinate" } ], "quote": "In Zunyi, Aśūnya Śayana Vrata 1987 falls on Monday 10 August. Dvitīyā runs from 15:37 on Mon 10 Aug to 12:16 on Tue 11 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4646, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-08-11T12:16:03+09:00", "utc": "1987-08-11T03:16:03Z", "ms": 555650163038.9734 }, "end": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-11T12:16:03+09:00", "utc": "1987-08-11T03:16:03Z", "ms": 555650163038.9734 }, "end": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-11", "window": { "start": { "local": "1987-08-11T13:33:29+09:00", "utc": "1987-08-11T04:33:29Z", "ms": 555654808899.2903 }, "end": { "local": "1987-08-11T14:21:29+09:00", "utc": "1987-08-11T05:21:29Z", "ms": 555657688899.2903 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-12", "window": { "start": { "local": "1987-08-12T13:33:19+09:00", "utc": "1987-08-12T04:33:19Z", "ms": 555741199204.9834 }, "end": { "local": "1987-08-12T14:21:19+09:00", "utc": "1987-08-12T05:21:19Z", "ms": 555744079204.9834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:16 on Tue 11 Aug to 09:25 on Wed 12 Aug.", "fact": "1987-08-11T03:16:03Z → 1987-08-12T00:25:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:33–14:21 on the 11th, 13:33–14:21 on the 12th.", "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 11th and 0 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 4646 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Zunyi, 1987: Tuesday 11 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": "1987-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-11", "confidence": "determinate" } ], "quote": "In Zunyi, Kajjalī Tṛtīyā (Kajari Teej) 1987 falls on Tuesday 11 August. Tṛtīyā runs from 12:16 on Tue 11 Aug to 09:25 on Wed 12 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30606, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 }, "end": { "local": "1987-08-13T07:11:42+09:00", "utc": "1987-08-12T22:11:42Z", "ms": 555804701962.1917 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 }, "end": { "local": "1987-08-13T07:11:42+09:00", "utc": "1987-08-12T22:11:42Z", "ms": 555804701962.1917 } }, "kaala": "sayahna", "days": [ { "local_date": "1987-08-12", "window": { "start": { "local": "1987-08-12T17:55:06+09:00", "utc": "1987-08-12T08:55:06Z", "ms": 555756905817.4384 }, "end": { "local": "1987-08-12T20:33:37+09:00", "utc": "1987-08-12T11:33:37Z", "ms": 555766416892.4083 } }, "covered_min": 159, "window_min": 159, "qualifies": true }, { "local_date": "1987-08-13", "window": { "start": { "local": "1987-08-13T17:54:31+09:00", "utc": "1987-08-13T08:54:31Z", "ms": 555843270694.9229 }, "end": { "local": "1987-08-13T20:32:45+09:00", "utc": "1987-08-13T11:32:45Z", "ms": 555852765181.1797 } }, "covered_min": 0, "window_min": 158, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug.", "fact": "1987-08-12T00:25:00Z → 1987-08-12T22:11:42Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:55–20:34 on the 12th, 17:55–20:33 on the 13th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 159 of 159 minutes on the 12th and 0 of 158 on the 13th.", "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 30606 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Zunyi, 1987: Wednesday 12 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": "1987-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-12", "confidence": "determinate" } ], "quote": "In Zunyi, Bahulā Caturthī 1987 falls on Wednesday 12 August. Caturthī runs from 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-08-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30683, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 }, "end": { "local": "1987-08-13T07:11:42+09:00", "utc": "1987-08-12T22:11:42Z", "ms": 555804701962.1917 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-12T09:25:00+09:00", "utc": "1987-08-12T00:25:00Z", "ms": 555726300156.684 }, "end": { "local": "1987-08-13T07:11:42+09:00", "utc": "1987-08-12T22:11:42Z", "ms": 555804701962.1917 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-08-11", "window": { "start": { "local": "1987-08-11T22:07:14+09:00", "utc": "1987-08-11T13:07:14Z", "ms": 555685634244.8684 }, "end": { "local": "1987-08-11T22:07:14+09:00", "utc": "1987-08-11T13:07:14Z", "ms": 555685634244.8684 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-08-12", "window": { "start": { "local": "1987-08-12T22:40:19+09:00", "utc": "1987-08-12T13:40:19Z", "ms": 555774019257.9552 }, "end": { "local": "1987-08-12T22:40:19+09:00", "utc": "1987-08-12T13:40:19Z", "ms": 555774019257.9552 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug.", "fact": "1987-08-12T00:25:00Z → 1987-08-12T22:11:42Z" }, { "step": "kaala", "text": "Moonrise is at 22:07 on the 11th and 22:40 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 11th and is on the 12th.", "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 30683 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Wednesday 12 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": "1987-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-12", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Wednesday 12 August. Caturthī runs from 09:25 on Wed 12 Aug to 07:12 on Thu 13 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-08-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28242, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-08-14T05:42:16+09:00", "utc": "1987-08-13T20:42:16Z", "ms": 555885735850.7922 }, "end": { "local": "1987-08-15T05:00:07+09:00", "utc": "1987-08-14T20:00:07Z", "ms": 555969606996.8479 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-14T05:42:16+09:00", "utc": "1987-08-13T20:42:16Z", "ms": 555885735850.7922 }, "end": { "local": "1987-08-15T05:00:07+09:00", "utc": "1987-08-14T20:00:07Z", "ms": 555969606996.8479 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-14", "window": { "start": { "local": "1987-08-14T13:32:58+09:00", "utc": "1987-08-14T04:32:58Z", "ms": 555913978191.7925 }, "end": { "local": "1987-08-14T14:20:58+09:00", "utc": "1987-08-14T05:20:58Z", "ms": 555916858191.7925 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-15", "window": { "start": { "local": "1987-08-15T13:32:47+09:00", "utc": "1987-08-15T04:32:47Z", "ms": 556000366894.0328 }, "end": { "local": "1987-08-15T14:20:47+09:00", "utc": "1987-08-15T05:20:47Z", "ms": 556003246894.0328 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:42 on Fri 14 Aug to 05:00 on Sat 15 Aug.", "fact": "1987-08-13T20:42:16Z → 1987-08-14T20:00:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:33–14:21 on the 14th, 13:33–14:21 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 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "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 28242 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Zunyi, 1987: Friday 14 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": "1987-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-14", "confidence": "determinate" } ], "quote": "In Zunyi, Hala Ṣaṣṭhī 1987 falls on Friday 14 August. Ṣaṣṭhī runs from 05:42 on Fri 14 Aug to 05:00 on Sat 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30429, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-08-15T05:00:07+09:00", "utc": "1987-08-14T20:00:07Z", "ms": 555969606996.8479 }, "end": { "local": "1987-08-16T05:05:26+09:00", "utc": "1987-08-15T20:05:26Z", "ms": 556056326214.7178 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-15T05:00:07+09:00", "utc": "1987-08-14T20:00:07Z", "ms": 555969606996.8479 }, "end": { "local": "1987-08-16T05:05:26+09:00", "utc": "1987-08-15T20:05:26Z", "ms": 556056326214.7178 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-15", "window": { "start": { "local": "1987-08-15T13:32:47+09:00", "utc": "1987-08-15T04:32:47Z", "ms": 556000366894.0328 }, "end": { "local": "1987-08-15T14:20:47+09:00", "utc": "1987-08-15T05:20:47Z", "ms": 556003246894.0328 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-16", "window": { "start": { "local": "1987-08-16T13:32:35+09:00", "utc": "1987-08-16T04:32:35Z", "ms": 556086755082.053 }, "end": { "local": "1987-08-16T14:20:35+09:00", "utc": "1987-08-16T05:20:35Z", "ms": 556089635082.053 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:00 on Sat 15 Aug to 05:05 on Sun 16 Aug.", "fact": "1987-08-14T20:00:07Z → 1987-08-15T20:05:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:33–14:21 on the 15th, 13:33–14:21 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30429 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Zunyi, 1987: Saturday 15 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": "1987-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-15", "confidence": "determinate" } ], "quote": "In Zunyi, Śītalā Saptamī 1987 falls on Saturday 15 August. Saptamī runs from 05:00 on Sat 15 Aug to 05:05 on Sun 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9864, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-08-16T05:05:26+09:00", "utc": "1987-08-15T20:05:26Z", "ms": 556056326214.7178 }, "end": { "local": "1987-08-17T05:54:58+09:00", "utc": "1987-08-16T20:54:58Z", "ms": 556145697567.6923 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-16T05:05:26+09:00", "utc": "1987-08-15T20:05:26Z", "ms": 556056326214.7178 }, "end": { "local": "1987-08-17T05:54:58+09:00", "utc": "1987-08-16T20:54:58Z", "ms": 556145697567.6923 } }, "kaala": "nishita", "days": [ { "local_date": "1987-08-15", "window": { "start": { "local": "1987-08-16T01:33:02+09:00", "utc": "1987-08-15T16:33:02Z", "ms": 556043582303.7522 }, "end": { "local": "1987-08-16T02:21:02+09:00", "utc": "1987-08-15T17:21:02Z", "ms": 556046462303.7522 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-08-16", "window": { "start": { "local": "1987-08-17T01:32:50+09:00", "utc": "1987-08-16T16:32:50Z", "ms": 556129970419.426 }, "end": { "local": "1987-08-17T02:20:50+09:00", "utc": "1987-08-16T17:20:50Z", "ms": 556132850419.426 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:05 on Sun 16 Aug to 05:55 on Mon 17 Aug.", "fact": "1987-08-15T20:05:26Z → 1987-08-16T20:54:58Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:33–02:21 on the 15th, 01:33–02:21 on the 16th.", "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 15th and 48 of 48 on the 16th.", "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 9864 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Zunyi, 1987: Sunday 16 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": "1987-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-16", "confidence": "determinate" } ], "quote": "In Zunyi, Janmāṣṭamī 1987 falls on Sunday 16 August. Aṣṭamī runs from 05:05 on Sun 16 Aug to 05:55 on Mon 17 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-08-20", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6844, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-08-19T09:18:41+09:00", "utc": "1987-08-19T00:18:41Z", "ms": 556330721378.9962 }, "end": { "local": "1987-08-20T11:34:27+09:00", "utc": "1987-08-20T02:34:27Z", "ms": 556425266592.2135 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-19T09:18:41+09:00", "utc": "1987-08-19T00:18:41Z", "ms": 556330721378.9962 }, "end": { "local": "1987-08-20T11:34:27+09:00", "utc": "1987-08-20T02:34:27Z", "ms": 556425266592.2135 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-08-19", "window": { "start": { "local": "1987-08-19T07:24:37+09:00", "utc": "1987-08-18T22:24:37Z", "ms": 556323877201.9142 }, "end": { "local": "1987-08-19T07:24:37+09:00", "utc": "1987-08-18T22:24:37Z", "ms": 556323877201.9142 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-08-20", "window": { "start": { "local": "1987-08-20T07:25:07+09:00", "utc": "1987-08-19T22:25:07Z", "ms": 556410307419.563 }, "end": { "local": "1987-08-20T07:25:07+09:00", "utc": "1987-08-19T22:25:07Z", "ms": 556410307419.563 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:19 on Wed 19 Aug to 11:34 on Thu 20 Aug.", "fact": "1987-08-19T00:18:41Z → 1987-08-20T02:34:27Z" }, { "step": "kaala", "text": "Sunrise is at 07:25 on the 19th and 07:25 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 6844 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Zunyi, 1987: Thursday 20 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": "1987-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-20", "confidence": "determinate" } ], "quote": "In Zunyi, Ajā Ekādaśī 1987 falls on Thursday 20 August. Ekādaśī runs from 09:19 on Wed 19 Aug to 11:34 on Thu 20 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-08-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-08-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14248, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-08-21T13:59:59+09:00", "utc": "1987-08-21T04:59:59Z", "ms": 556520398718.4948 }, "end": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-21T13:59:59+09:00", "utc": "1987-08-21T04:59:59Z", "ms": 556520398718.4948 }, "end": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-08-21", "window": { "start": { "local": "1987-08-21T20:25:20+09:00", "utc": "1987-08-21T11:25:20Z", "ms": 556543519796.9783 }, "end": { "local": "1987-08-21T21:53:26+09:00", "utc": "1987-08-21T12:53:26Z", "ms": 556548806140.6128 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "1987-08-22", "window": { "start": { "local": "1987-08-22T20:24:21+09:00", "utc": "1987-08-22T11:24:21Z", "ms": 556629860501.1091 }, "end": { "local": "1987-08-22T21:52:39+09:00", "utc": "1987-08-22T12:52:39Z", "ms": 556635158715.1056 } }, "covered_min": 0, "window_min": 88, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:00 on Fri 21 Aug to 16:27 on Sat 22 Aug.", "fact": "1987-08-21T04:59:59Z → 1987-08-22T07:26:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:25–21:53 on the 21st, 20:24–21:53 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 88 of 88 minutes on the 21st and 0 of 88 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 14248 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Friday 21 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": "1987-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-21", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Friday 21 August. Trayodaśī runs from 14:00 on Fri 21 Aug to 16:27 on Sat 22 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-08-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5706, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 }, "end": { "local": "1987-08-23T18:48:14+09:00", "utc": "1987-08-23T09:48:14Z", "ms": 556710494004.5983 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 }, "end": { "local": "1987-08-23T18:48:14+09:00", "utc": "1987-08-23T09:48:14Z", "ms": 556710494004.5983 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-08-22", "window": { "start": { "local": "1987-08-22T20:24:21+09:00", "utc": "1987-08-22T11:24:21Z", "ms": 556629860501.1091 }, "end": { "local": "1987-08-22T21:52:39+09:00", "utc": "1987-08-22T12:52:39Z", "ms": 556635158715.1056 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "1987-08-23", "window": { "start": { "local": "1987-08-23T20:23:20+09:00", "utc": "1987-08-23T11:23:20Z", "ms": 556716200474.595 }, "end": { "local": "1987-08-23T21:51:51+09:00", "utc": "1987-08-23T12:51:51Z", "ms": 556721510634.1998 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:27 on Sat 22 Aug to 18:48 on Sun 23 Aug.", "fact": "1987-08-22T07:26:52Z → 1987-08-23T09:48:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:24–21:53 on the 22nd, 20:23–21:52 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 88 of 88 minutes on the 22nd and 0 of 89 on the 23rd.", "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 5706 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Zunyi, 1987: Saturday 22 August.", "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": "1987-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-22", "confidence": "determinate" } ], "quote": "In Zunyi, Aghora Caturdaśī 1987 falls on Saturday 22 August. Caturdaśī runs from 16:27 on Sat 22 Aug to 18:48 on Sun 23 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shivaratri?on=1987-08-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24180, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 }, "end": { "local": "1987-08-23T18:48:14+09:00", "utc": "1987-08-23T09:48:14Z", "ms": 556710494004.5983 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-22T16:26:52+09:00", "utc": "1987-08-22T07:26:52Z", "ms": 556615612222.4078 }, "end": { "local": "1987-08-23T18:48:14+09:00", "utc": "1987-08-23T09:48:14Z", "ms": 556710494004.5983 } }, "kaala": "nishita", "days": [ { "local_date": "1987-08-22", "window": { "start": { "local": "1987-08-23T01:31:29+09:00", "utc": "1987-08-22T16:31:29Z", "ms": 556648288803.596 }, "end": { "local": "1987-08-23T02:19:29+09:00", "utc": "1987-08-22T17:19:29Z", "ms": 556651168803.596 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-23", "window": { "start": { "local": "1987-08-24T01:31:14+09:00", "utc": "1987-08-23T16:31:14Z", "ms": 556734673573.1132 }, "end": { "local": "1987-08-24T02:19:14+09:00", "utc": "1987-08-23T17:19:14Z", "ms": 556737553573.1132 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:27 on Sat 22 Aug to 18:48 on Sun 23 Aug.", "fact": "1987-08-22T07:26:52Z → 1987-08-23T09:48:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 01:31–02:19 on the 22nd, 01:31–02:19 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "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 24180 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Saturday 22 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": "1987-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-22", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Saturday 22 August. Caturdaśī runs from 16:27 on Sat 22 Aug to 18:48 on Sun 23 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-08-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23994, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-08-24T20:58:37+09:00", "utc": "1987-08-24T11:58:37Z", "ms": 556804717336.1344 }, "end": { "local": "1987-08-25T22:53:36+09:00", "utc": "1987-08-25T13:53:36Z", "ms": 556898016008.1254 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-24T20:58:37+09:00", "utc": "1987-08-24T11:58:37Z", "ms": 556804717336.1344 }, "end": { "local": "1987-08-25T22:53:36+09:00", "utc": "1987-08-25T13:53:36Z", "ms": 556898016008.1254 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-24", "window": { "start": { "local": "1987-08-24T13:30:43+09:00", "utc": "1987-08-24T04:30:43Z", "ms": 556777843205.6768 }, "end": { "local": "1987-08-24T14:18:43+09:00", "utc": "1987-08-24T05:18:43Z", "ms": 556780723205.6768 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-08-25", "window": { "start": { "local": "1987-08-25T13:30:27+09:00", "utc": "1987-08-25T04:30:27Z", "ms": 556864227194.2158 }, "end": { "local": "1987-08-25T14:18:27+09:00", "utc": "1987-08-25T05:18:27Z", "ms": 556867107194.2158 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:59 on Mon 24 Aug to 22:54 on Tue 25 Aug.", "fact": "1987-08-24T11:58:37Z → 1987-08-25T13:53:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:31–14:19 on the 24th, 13:30–14:18 on the 25th.", "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 24th and 48 of 48 on the 25th.", "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 23994 s" }, { "step": "ruling", "text": "Rudra Vrata, Zunyi, 1987: Tuesday 25 August.", "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": "1987-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-25", "confidence": "determinate" } ], "quote": "In Zunyi, Rudra Vrata 1987 falls on Tuesday 25 August. Pratipadā runs from 20:59 on Mon 24 Aug to 22:54 on Tue 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36662, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1987-08-27T00:29:13+09:00", "utc": "1987-08-26T15:29:13Z", "ms": 556990153223.8666 }, "end": { "local": "1987-08-28T01:41:38+09:00", "utc": "1987-08-27T16:41:38Z", "ms": 557080898411.5104 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-27T00:29:13+09:00", "utc": "1987-08-26T15:29:13Z", "ms": 556990153223.8666 }, "end": { "local": "1987-08-28T01:41:38+09:00", "utc": "1987-08-27T16:41:38Z", "ms": 557080898411.5104 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-26", "window": { "start": { "local": "1987-08-26T13:30:11+09:00", "utc": "1987-08-26T04:30:11Z", "ms": 556950610766.8546 }, "end": { "local": "1987-08-26T14:18:11+09:00", "utc": "1987-08-26T05:18:11Z", "ms": 556953490766.8546 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-08-27", "window": { "start": { "local": "1987-08-27T13:29:54+09:00", "utc": "1987-08-27T04:29:54Z", "ms": 557036993934.9355 }, "end": { "local": "1987-08-27T14:17:54+09:00", "utc": "1987-08-27T05:17:54Z", "ms": 557039873934.9355 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:29 on Thu 27 Aug to 01:42 on Fri 28 Aug.", "fact": "1987-08-26T15:29:13Z → 1987-08-27T16:41:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:30–14:18 on the 26th, 13:30–14:18 on the 27th.", "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 26th and 48 of 48 on the 27th.", "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 36662 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Zunyi, 1987: Thursday 27 August.", "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": "1987-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-27", "confidence": "determinate" } ], "quote": "In Zunyi, Haritālikā Vrata (Hartalika Teej) 1987 falls on Thursday 27 August. Tṛtīyā runs from 00:29 on Thu 27 Aug to 01:42 on Fri 28 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39738, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-08-28T01:41:38+09:00", "utc": "1987-08-27T16:41:38Z", "ms": 557080898411.5104 }, "end": { "local": "1987-08-29T02:27:01+09:00", "utc": "1987-08-28T17:27:01Z", "ms": 557170020642.3739 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-28T01:41:38+09:00", "utc": "1987-08-27T16:41:38Z", "ms": 557080898411.5104 }, "end": { "local": "1987-08-29T02:27:01+09:00", "utc": "1987-08-28T17:27:01Z", "ms": 557170020642.3739 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-28", "window": { "start": { "local": "1987-08-28T13:29:37+09:00", "utc": "1987-08-28T04:29:37Z", "ms": 557123376710.3306 }, "end": { "local": "1987-08-28T14:17:37+09:00", "utc": "1987-08-28T05:17:37Z", "ms": 557126256710.3306 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-29", "window": { "start": { "local": "1987-08-29T13:29:19+09:00", "utc": "1987-08-29T04:29:19Z", "ms": 557209759105.5264 }, "end": { "local": "1987-08-29T14:17:19+09:00", "utc": "1987-08-29T05:17:19Z", "ms": 557212639105.5264 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:42 on Fri 28 Aug to 02:27 on Sat 29 Aug.", "fact": "1987-08-27T16:41:38Z → 1987-08-28T17:27:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:30–14:18 on the 28th, 13:29–14:17 on the 29th.", "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 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: purvaviddha → only-day · margin 39738 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Zunyi, 1987: Friday 28 August.", "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": "1987-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-28", "confidence": "determinate" } ], "quote": "In Zunyi, Gaṇeśa Caturthī 1987 falls on Friday 28 August. Caturthī runs from 01:42 on Fri 28 Aug to 02:27 on Sat 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38840, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-08-29T02:27:01+09:00", "utc": "1987-08-28T17:27:01Z", "ms": 557170020642.3739 }, "end": { "local": "1987-08-30T02:41:41+09:00", "utc": "1987-08-29T17:41:41Z", "ms": 557257301159.9734 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-29T02:27:01+09:00", "utc": "1987-08-28T17:27:01Z", "ms": 557170020642.3739 }, "end": { "local": "1987-08-30T02:41:41+09:00", "utc": "1987-08-29T17:41:41Z", "ms": 557257301159.9734 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-29", "window": { "start": { "local": "1987-08-29T13:29:19+09:00", "utc": "1987-08-29T04:29:19Z", "ms": 557209759105.5264 }, "end": { "local": "1987-08-29T14:17:19+09:00", "utc": "1987-08-29T05:17:19Z", "ms": 557212639105.5264 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-30", "window": { "start": { "local": "1987-08-30T13:29:01+09:00", "utc": "1987-08-30T04:29:01Z", "ms": 557296141133.7128 }, "end": { "local": "1987-08-30T14:17:01+09:00", "utc": "1987-08-30T05:17:01Z", "ms": 557299021133.7128 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:27 on Sat 29 Aug to 02:42 on Sun 30 Aug.", "fact": "1987-08-28T17:27:01Z → 1987-08-29T17:41:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:29–14:17 on the 29th, 13:29–14:17 on the 30th.", "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 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: disputed → only-day · margin 38840 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Zunyi, 1987: Saturday 29 August.", "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": "1987-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-29", "confidence": "determinate" } ], "quote": "In Zunyi, Ṛṣi Pañcamī 1987 falls on Saturday 29 August. Pañcamī runs from 02:27 on Sat 29 Aug to 02:42 on Sun 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38840, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-08-30T02:41:41+09:00", "utc": "1987-08-29T17:41:41Z", "ms": 557257301159.9734 }, "end": { "local": "1987-08-31T02:22:41+09:00", "utc": "1987-08-30T17:22:41Z", "ms": 557342560964.9344 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-30T02:41:41+09:00", "utc": "1987-08-29T17:41:41Z", "ms": 557257301159.9734 }, "end": { "local": "1987-08-31T02:22:41+09:00", "utc": "1987-08-30T17:22:41Z", "ms": 557342560964.9344 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-30", "window": { "start": { "local": "1987-08-30T13:29:01+09:00", "utc": "1987-08-30T04:29:01Z", "ms": 557296141133.7128 }, "end": { "local": "1987-08-30T14:17:01+09:00", "utc": "1987-08-30T05:17:01Z", "ms": 557299021133.7128 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-08-31", "window": { "start": { "local": "1987-08-31T13:28:43+09:00", "utc": "1987-08-31T04:28:43Z", "ms": 557382522808.8773 }, "end": { "local": "1987-08-31T14:16:43+09:00", "utc": "1987-08-31T05:16:43Z", "ms": 557385402808.8773 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:42 on Sun 30 Aug to 02:23 on Mon 31 Aug.", "fact": "1987-08-29T17:41:41Z → 1987-08-30T17:22:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:29–14:17 on the 30th, 13:29–14:17 on the 31st.", "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 30th and 0 of 48 on the 31st.", "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 38840 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Zunyi, 1987: Sunday 30 August.", "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": "1987-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-30", "confidence": "determinate" } ], "quote": "In Zunyi, Sūrya Ṣaṣṭhī (Bhādrapada) 1987 falls on Sunday 30 August. Ṣaṣṭhī runs from 02:42 on Sun 30 Aug to 02:23 on Mon 31 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39962, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-08-31T02:22:41+09:00", "utc": "1987-08-30T17:22:41Z", "ms": 557342560964.9344 }, "end": { "local": "1987-09-01T01:28:14+09:00", "utc": "1987-08-31T16:28:14Z", "ms": 557425694352.682 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-08-31T02:22:41+09:00", "utc": "1987-08-30T17:22:41Z", "ms": 557342560964.9344 }, "end": { "local": "1987-09-01T01:28:14+09:00", "utc": "1987-08-31T16:28:14Z", "ms": 557425694352.682 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-31", "window": { "start": { "local": "1987-08-31T13:28:43+09:00", "utc": "1987-08-31T04:28:43Z", "ms": 557382522808.8773 }, "end": { "local": "1987-08-31T14:16:43+09:00", "utc": "1987-08-31T05:16:43Z", "ms": 557385402808.8773 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-09-01", "window": { "start": { "local": "1987-09-01T13:28:24+09:00", "utc": "1987-09-01T04:28:24Z", "ms": 557468904146.0251 }, "end": { "local": "1987-09-01T14:16:24+09:00", "utc": "1987-09-01T05:16:24Z", "ms": 557471784146.0251 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:23 on Mon 31 Aug to 01:28 on Tue 1 Sep.", "fact": "1987-08-30T17:22:41Z → 1987-08-31T16:28:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:29–14:17 on the 31st, 13:28–14:16 on the 1st.", "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 31st and 0 of 48 on the 1st.", "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 39962 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Zunyi, 1987: Monday 31 August.", "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": "1987-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-08-31", "confidence": "determinate" } ], "quote": "In Zunyi, Muktābharaṇa Vrata 1987 falls on Monday 31 August. Saptamī runs from 02:23 on Mon 31 Aug to 01:28 on Tue 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34914, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-09-01T01:28:14+09:00", "utc": "1987-08-31T16:28:14Z", "ms": 557425694352.682 }, "end": { "local": "1987-09-01T23:58:18+09:00", "utc": "1987-09-01T14:58:18Z", "ms": 557506697789.0262 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-09-01T01:28:14+09:00", "utc": "1987-08-31T16:28:14Z", "ms": 557425694352.682 }, "end": { "local": "1987-09-01T23:58:18+09:00", "utc": "1987-09-01T14:58:18Z", "ms": 557506697789.0262 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-08-31", "window": { "start": { "local": "1987-08-31T13:28:43+09:00", "utc": "1987-08-31T04:28:43Z", "ms": 557382522808.8773 }, "end": { "local": "1987-08-31T14:16:43+09:00", "utc": "1987-08-31T05:16:43Z", "ms": 557385402808.8773 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-09-01", "window": { "start": { "local": "1987-09-01T13:28:24+09:00", "utc": "1987-09-01T04:28:24Z", "ms": 557468904146.0251 }, "end": { "local": "1987-09-01T14:16:24+09:00", "utc": "1987-09-01T05:16:24Z", "ms": 557471784146.0251 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:28 on Tue 1 Sep to 23:58 on Tue 1 Sep.", "fact": "1987-08-31T16:28:14Z → 1987-09-01T14:58:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:29–14:17 on the 31st, 13:28–14:16 on the 1st.", "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 31st and 48 of 48 on the 1st.", "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 34914 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Zunyi, 1987: Tuesday 1 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": "1987-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-01", "confidence": "determinate" } ], "quote": "In Zunyi, Rādhāṣṭamī 1987 falls on Tuesday 1 September. Aṣṭamī runs from 01:28 on Tue 1 Sep to 23:58 on Tue 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-09-04", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31922, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-09-03T19:21:34+09:00", "utc": "1987-09-03T10:21:34Z", "ms": 557662893869.866 }, "end": { "local": "1987-09-04T16:24:23+09:00", "utc": "1987-09-04T07:24:23Z", "ms": 557738662680.2709 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-09-03T19:21:34+09:00", "utc": "1987-09-03T10:21:34Z", "ms": 557662893869.866 }, "end": { "local": "1987-09-04T16:24:23+09:00", "utc": "1987-09-04T07:24:23Z", "ms": 557738662680.2709 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-09-03", "window": { "start": { "local": "1987-09-03T07:31:53+09:00", "utc": "1987-09-02T22:31:53Z", "ms": 557620313257.3381 }, "end": { "local": "1987-09-03T07:31:53+09:00", "utc": "1987-09-02T22:31:53Z", "ms": 557620313257.3381 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-09-04", "window": { "start": { "local": "1987-09-04T07:32:21+09:00", "utc": "1987-09-03T22:32:21Z", "ms": 557706741081.513 }, "end": { "local": "1987-09-04T07:32:21+09:00", "utc": "1987-09-03T22:32:21Z", "ms": 557706741081.513 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:22 on Thu 3 Sep to 16:24 on Fri 4 Sep.", "fact": "1987-09-03T10:21:34Z → 1987-09-04T07:24:23Z" }, { "step": "kaala", "text": "Sunrise is at 07:32 on the 3rd and 07:32 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 31922 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Zunyi, 1987: Friday 4 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": "1987-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-04", "confidence": "determinate" } ], "quote": "In Zunyi, Parivartanī Ekādaśī 1987 falls on Friday 4 September. Ekādaśī runs from 19:22 on Thu 3 Sep to 16:24 on Fri 4 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-09-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1004, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-09-04T16:24:23+09:00", "utc": "1987-09-04T07:24:23Z", "ms": 557738662680.2709 }, "end": { "local": "1987-09-05T13:10:22+09:00", "utc": "1987-09-05T04:10:22Z", "ms": 557813422038.9188 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-09-04T16:24:23+09:00", "utc": "1987-09-04T07:24:23Z", "ms": 557738662680.2709 }, "end": { "local": "1987-09-05T13:10:22+09:00", "utc": "1987-09-05T04:10:22Z", "ms": 557813422038.9188 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-09-04", "window": { "start": { "local": "1987-09-04T13:27:26+09:00", "utc": "1987-09-04T04:27:26Z", "ms": 557728046294.6902 }, "end": { "local": "1987-09-04T14:15:26+09:00", "utc": "1987-09-04T05:15:26Z", "ms": 557730926294.6902 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-09-05", "window": { "start": { "local": "1987-09-05T13:27:06+09:00", "utc": "1987-09-05T04:27:06Z", "ms": 557814426450.6094 }, "end": { "local": "1987-09-05T14:15:06+09:00", "utc": "1987-09-05T05:15:06Z", "ms": 557817306450.6094 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:24 on Fri 4 Sep to 13:10 on Sat 5 Sep.", "fact": "1987-09-04T07:24:23Z → 1987-09-05T04:10:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 13:27–14:15 on the 4th, 13:27–14:15 on the 5th.", "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 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 1004 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Zunyi, 1987: Saturday 5 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": "1987-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-05", "confidence": "determinate" } ], "quote": "In Zunyi, Vāmana Jayantī 1987 falls on Saturday 5 September. Dvādaśī runs from 16:24 on Fri 4 Sep to 13:10 on Sat 5 Sep, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-09-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25142, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-09-05T13:10:22+09:00", "utc": "1987-09-05T04:10:22Z", "ms": 557813422038.9188 }, "end": { "local": "1987-09-06T09:47:46+09:00", "utc": "1987-09-06T00:47:46Z", "ms": 557887666067.2274 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-09-05T13:10:22+09:00", "utc": "1987-09-05T04:10:22Z", "ms": 557813422038.9188 }, "end": { "local": "1987-09-06T09:47:46+09:00", "utc": "1987-09-06T00:47:46Z", "ms": 557887666067.2274 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-09-05", "window": { "start": { "local": "1987-09-05T20:09:24+09:00", "utc": "1987-09-05T11:09:24Z", "ms": 557838564118.0183 }, "end": { "local": "1987-09-05T21:40:35+09:00", "utc": "1987-09-05T12:40:35Z", "ms": 557844035085.6517 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1987-09-06", "window": { "start": { "local": "1987-09-06T20:08:16+09:00", "utc": "1987-09-06T11:08:16Z", "ms": 557924896344.7703 }, "end": { "local": "1987-09-06T21:39:40+09:00", "utc": "1987-09-06T12:39:40Z", "ms": 557930380015.1343 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:10 on Sat 5 Sep to 09:48 on Sun 6 Sep.", "fact": "1987-09-05T04:10:22Z → 1987-09-06T00:47:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:09–21:41 on the 5th, 20:08–21:40 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 91 of 91 minutes on the 5th and 0 of 91 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 25142 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Saturday 5 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": "1987-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-05", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Saturday 5 September. Trayodaśī runs from 13:10 on Sat 5 Sep to 09:48 on Sun 6 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-09-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-06", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 990, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-09-06T09:47:46+09:00", "utc": "1987-09-06T00:47:46Z", "ms": 557887666067.2274 }, "end": { "local": "1987-09-07T06:25:31+09:00", "utc": "1987-09-06T21:25:31Z", "ms": 557961930758.8722 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1987-09-06T09:47:46+09:00", "utc": "1987-09-06T00:47:46Z", "ms": 557887666067.2274 }, "end": { "local": "1987-09-07T06:25:31+09:00", "utc": "1987-09-06T21:25:31Z", "ms": 557961930758.8722 } }, "kaala": "udaya-3", "days": [ { "local_date": "1987-09-06", "window": { "start": { "local": "1987-09-06T07:33:16+09:00", "utc": "1987-09-05T22:33:16Z", "ms": 557879596375.2688 }, "end": { "local": "1987-09-06T10:04:16+09:00", "utc": "1987-09-06T01:04:16Z", "ms": 557888656369.1691 } }, "covered_min": 17, "window_min": 151, "qualifies": false }, { "local_date": "1987-09-07", "window": { "start": { "local": "1987-09-07T07:33:44+09:00", "utc": "1987-09-06T22:33:44Z", "ms": 557966023872.5005 }, "end": { "local": "1987-09-07T10:04:25+09:00", "utc": "1987-09-07T01:04:25Z", "ms": 557975064741.4286 } }, "covered_min": 0, "window_min": 151, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:48 on Sun 6 Sep to 06:26 on Mon 7 Sep.", "fact": "1987-09-06T00:47:46Z → 1987-09-06T21:25:31Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 07:33–10:04 on the 6th, 07:34–10:04 on the 7th.", "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 17 of 151 minutes on the 6th and 0 of 151 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 990 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Zunyi, 1987: Sunday 6 September.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "1987-09-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-06", "confidence": "boundary" } ], "quote": "In Zunyi, Ananta Caturdaśī 1987 falls on Sunday 6 September. Caturdaśī runs from 09:48 on Sun 6 Sep to 06:26 on Mon 7 Sep, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-09-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5945, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-09-10T20:02:02+09:00", "utc": "1987-09-10T11:02:02Z", "ms": 558270121560.116 }, "end": { "local": "1987-09-11T18:52:48+09:00", "utc": "1987-09-11T09:52:48Z", "ms": 558352367657.8528 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-10T20:02:02+09:00", "utc": "1987-09-10T11:02:02Z", "ms": 558270121560.116 }, "end": { "local": "1987-09-11T18:52:48+09:00", "utc": "1987-09-11T09:52:48Z", "ms": 558352367657.8528 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-09-10", "window": { "start": { "local": "1987-09-10T21:41:07+09:00", "utc": "1987-09-10T12:41:07Z", "ms": 558276066670.3408 }, "end": { "local": "1987-09-10T21:41:07+09:00", "utc": "1987-09-10T12:41:07Z", "ms": 558276066670.3408 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-09-11", "window": { "start": { "local": "1987-09-11T22:15:40+09:00", "utc": "1987-09-11T13:15:40Z", "ms": 558364540332.7625 }, "end": { "local": "1987-09-11T22:15:40+09:00", "utc": "1987-09-11T13:15:40Z", "ms": 558364540332.7625 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:02 on Thu 10 Sep to 18:53 on Fri 11 Sep.", "fact": "1987-09-10T11:02:02Z → 1987-09-11T09:52:48Z" }, { "step": "kaala", "text": "Moonrise is at 21:41 on the 10th and 22:16 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "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 5945 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Thursday 10 September.", "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": "1987-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-10", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Thursday 10 September. Caturthī runs from 20:02 on Thu 10 Sep to 18:53 on Fri 11 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-09-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15847, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-09-12T18:29:00+09:00", "utc": "1987-09-12T09:29:00Z", "ms": 558437340066.2297 }, "end": { "local": "1987-09-13T17:51:25+08:00", "utc": "1987-09-13T09:51:25Z", "ms": 558525085436.1168 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-12T18:29:00+09:00", "utc": "1987-09-12T09:29:00Z", "ms": 558437340066.2297 }, "end": { "local": "1987-09-13T17:51:25+08:00", "utc": "1987-09-13T09:51:25Z", "ms": 558525085436.1168 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-09-12", "window": { "start": { "local": "1987-09-12T22:53:07+09:00", "utc": "1987-09-12T13:53:07Z", "ms": 558453186848.8754 }, "end": { "local": "1987-09-12T22:53:07+09:00", "utc": "1987-09-12T13:53:07Z", "ms": 558453186848.8754 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-09-13", "window": { "start": { "local": "1987-09-13T22:34:31+08:00", "utc": "1987-09-13T14:34:31Z", "ms": 558542070788.6492 }, "end": { "local": "1987-09-13T22:34:31+08:00", "utc": "1987-09-13T14:34:31Z", "ms": 558542070788.6492 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:29 on Sat 12 Sep to 17:51 on Sun 13 Sep.", "fact": "1987-09-12T09:29:00Z → 1987-09-13T09:51:25Z" }, { "step": "kaala", "text": "Moonrise is at 22:53 on the 12th and 22:35 on the 13th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 12th and is not on the 13th.", "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 15847 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Zunyi, 1987: Saturday 12 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": "1987-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-12", "confidence": "determinate" } ], "quote": "In Zunyi, Candra Ṣaṣṭhī 1987 falls on Saturday 12 September. Ṣaṣṭhī runs from 18:29 on Sat 12 Sep to 17:51 on Sun 13 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12663, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-09-14T18:57:13+08:00", "utc": "1987-09-14T10:57:13Z", "ms": 558615433316.3522 }, "end": { "local": "1987-09-15T20:39:50+08:00", "utc": "1987-09-15T12:39:50Z", "ms": 558707990468.1185 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-14T18:57:13+08:00", "utc": "1987-09-14T10:57:13Z", "ms": 558615433316.3522 }, "end": { "local": "1987-09-15T20:39:50+08:00", "utc": "1987-09-15T12:39:50Z", "ms": 558707990468.1185 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-09-14", "window": { "start": { "local": "1987-09-14T23:20:29+08:00", "utc": "1987-09-14T15:20:29Z", "ms": 558631228792.3634 }, "end": { "local": "1987-09-14T23:20:29+08:00", "utc": "1987-09-14T15:20:29Z", "ms": 558631228792.3634 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-09-15", "window": { "start": { "local": "1987-09-16T00:10:53+08:00", "utc": "1987-09-15T16:10:53Z", "ms": 558720653470.6492 }, "end": { "local": "1987-09-16T00:10:53+08:00", "utc": "1987-09-15T16:10:53Z", "ms": 558720653470.6492 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep.", "fact": "1987-09-14T10:57:13Z → 1987-09-15T12:39:50Z" }, { "step": "kaala", "text": "Moonrise is at 23:20 on the 14th and 00:11 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 14th and is not on the 15th.", "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 12663 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Zunyi, 1987: Monday 14 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": "1987-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-14", "confidence": "determinate" } ], "quote": "In Zunyi, Mahālakṣmī Vrata Samāpana 1987 falls on Monday 14 September. Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-15", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 111, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-09-14T18:57:13+08:00", "utc": "1987-09-14T10:57:13Z", "ms": 558615433316.3522 }, "end": { "local": "1987-09-15T20:39:50+08:00", "utc": "1987-09-15T12:39:50Z", "ms": 558707990468.1185 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-14T18:57:13+08:00", "utc": "1987-09-14T10:57:13Z", "ms": 558615433316.3522 }, "end": { "local": "1987-09-15T20:39:50+08:00", "utc": "1987-09-15T12:39:50Z", "ms": 558707990468.1185 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-09-14", "window": { "start": { "local": "1987-09-14T18:59:04+08:00", "utc": "1987-09-14T10:59:04Z", "ms": 558615543824.2106 }, "end": { "local": "1987-09-14T20:32:10+08:00", "utc": "1987-09-14T12:32:10Z", "ms": 558621130301.6075 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1987-09-15", "window": { "start": { "local": "1987-09-15T18:57:54+08:00", "utc": "1987-09-15T10:57:54Z", "ms": 558701873890.4033 }, "end": { "local": "1987-09-15T20:31:13+08:00", "utc": "1987-09-15T12:31:13Z", "ms": 558707473340.3837 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep.", "fact": "1987-09-14T10:57:13Z → 1987-09-15T12:39:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:59–20:32 on the 14th, 18:58–20:31 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 93 of 93 minutes on the 14th and 93 of 93 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "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 111 s < 300 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Zunyi, 1987: Tuesday 15 September.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "1987-09-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-14", "confidence": "boundary" } ], "quote": "In Zunyi, Jitāṣṭamī (Jitiya) 1987 falls on Tuesday 15 September. Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 93 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 51 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-09-18", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10554, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-09-18T01:14:44+08:00", "utc": "1987-09-17T17:14:44Z", "ms": 558897284081.7926 }, "end": { "local": "1987-09-19T03:43:18+08:00", "utc": "1987-09-18T19:43:18Z", "ms": 558992597724.589 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-18T01:14:44+08:00", "utc": "1987-09-17T17:14:44Z", "ms": 558897284081.7926 }, "end": { "local": "1987-09-19T03:43:18+08:00", "utc": "1987-09-18T19:43:18Z", "ms": 558992597724.589 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-09-18", "window": { "start": { "local": "1987-09-18T06:38:45+08:00", "utc": "1987-09-17T22:38:45Z", "ms": 558916724656.5808 }, "end": { "local": "1987-09-18T06:38:45+08:00", "utc": "1987-09-17T22:38:45Z", "ms": 558916724656.5808 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-09-19", "window": { "start": { "local": "1987-09-19T06:39:12+08:00", "utc": "1987-09-18T22:39:12Z", "ms": 559003152210.2025 }, "end": { "local": "1987-09-19T06:39:12+08:00", "utc": "1987-09-18T22:39:12Z", "ms": 559003152210.2025 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:15 on Fri 18 Sep to 03:43 on Sat 19 Sep.", "fact": "1987-09-17T17:14:44Z → 1987-09-18T19:43:18Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 18th and 06:39 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 not on the 19th.", "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 10554 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Zunyi, 1987: Friday 18 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": "1987-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-18", "confidence": "determinate" } ], "quote": "In Zunyi, Indirā Ekādaśī 1987 falls on Friday 18 September. Ekādaśī runs from 01:15 on Fri 18 Sep to 03:43 on Sat 19 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-09-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-09-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34616, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-09-20T06:04:21+08:00", "utc": "1987-09-19T22:04:21Z", "ms": 559087460782.5885 }, "end": { "local": "1987-09-21T08:09:11+08:00", "utc": "1987-09-21T00:09:11Z", "ms": 559181350538.7217 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-20T06:04:21+08:00", "utc": "1987-09-19T22:04:21Z", "ms": 559087460782.5885 }, "end": { "local": "1987-09-21T08:09:11+08:00", "utc": "1987-09-21T00:09:11Z", "ms": 559181350538.7217 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-09-19", "window": { "start": { "local": "1987-09-19T18:53:13+08:00", "utc": "1987-09-19T10:53:13Z", "ms": 559047193392.5631 }, "end": { "local": "1987-09-19T20:27:25+08:00", "utc": "1987-09-19T12:27:25Z", "ms": 559052844920.299 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1987-09-20", "window": { "start": { "local": "1987-09-20T18:52:03+08:00", "utc": "1987-09-20T10:52:03Z", "ms": 559133523207.0818 }, "end": { "local": "1987-09-20T20:26:28+08:00", "utc": "1987-09-20T12:26:28Z", "ms": 559139187791.2662 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:04 on Sun 20 Sep to 08:09 on Mon 21 Sep.", "fact": "1987-09-19T22:04:21Z → 1987-09-21T00:09:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:27 on the 19th, 18:52–20:26 on the 20th.", "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 19th and 94 of 94 on the 20th.", "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 34616 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Sunday 20 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": "1987-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-20", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Sunday 20 September. Trayodaśī runs from 06:04 on Sun 20 Sep to 08:09 on Mon 21 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-09-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25145, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-09-21T08:09:11+08:00", "utc": "1987-09-21T00:09:11Z", "ms": 559181350538.7217 }, "end": { "local": "1987-09-22T09:51:41+08:00", "utc": "1987-09-22T01:51:41Z", "ms": 559273900813.5767 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-21T08:09:11+08:00", "utc": "1987-09-21T00:09:11Z", "ms": 559181350538.7217 }, "end": { "local": "1987-09-22T09:51:41+08:00", "utc": "1987-09-22T01:51:41Z", "ms": 559273900813.5767 } }, "kaala": "nishita", "days": [ { "local_date": "1987-09-20", "window": { "start": { "local": "1987-09-21T00:22:05+08:00", "utc": "1987-09-20T16:22:05Z", "ms": 559153325397.7737 }, "end": { "local": "1987-09-21T01:10:05+08:00", "utc": "1987-09-20T17:10:05Z", "ms": 559156205397.7737 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-09-21", "window": { "start": { "local": "1987-09-22T00:21:44+08:00", "utc": "1987-09-21T16:21:44Z", "ms": 559239704241.2766 }, "end": { "local": "1987-09-22T01:09:44+08:00", "utc": "1987-09-21T17:09:44Z", "ms": 559242584241.2766 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:09 on Mon 21 Sep to 09:52 on Tue 22 Sep.", "fact": "1987-09-21T00:09:11Z → 1987-09-22T01:51:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:22–01:10 on the 20th, 00:22–01:10 on the 21st.", "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 20th and 48 of 48 on the 21st.", "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 25145 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Monday 21 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": "1987-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-21", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Monday 21 September. Caturdaśī runs from 08:09 on Mon 21 Sep to 09:52 on Tue 22 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-09-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10160, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1987-09-22T09:51:41+08:00", "utc": "1987-09-22T01:51:41Z", "ms": 559273900813.5767 }, "end": { "local": "1987-09-23T11:08:13+08:00", "utc": "1987-09-23T03:08:13Z", "ms": 559364893355.9653 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-22T09:51:41+08:00", "utc": "1987-09-22T01:51:41Z", "ms": 559273900813.5767 }, "end": { "local": "1987-09-23T11:08:13+08:00", "utc": "1987-09-23T03:08:13Z", "ms": 559364893355.9653 } }, "kaala": "aparahna", "days": [ { "local_date": "1987-09-22", "window": { "start": { "local": "1987-09-22T13:58:04+08:00", "utc": "1987-09-22T05:58:04Z", "ms": 559288683938.3989 }, "end": { "local": "1987-09-22T16:23:53+08:00", "utc": "1987-09-22T08:23:53Z", "ms": 559297433439.7574 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1987-09-23", "window": { "start": { "local": "1987-09-23T13:57:33+08:00", "utc": "1987-09-23T05:57:33Z", "ms": 559375053105.7255 }, "end": { "local": "1987-09-23T16:23:03+08:00", "utc": "1987-09-23T08:23:03Z", "ms": 559383783008.1829 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:52 on Tue 22 Sep to 11:08 on Wed 23 Sep.", "fact": "1987-09-22T01:51:41Z → 1987-09-23T03:08:13Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:58–16:24 on the 22nd, 13:58–16:23 on the 23rd.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 146 of 146 minutes on the 22nd and 0 of 145 on the 23rd.", "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 10160 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Zunyi, 1987: Tuesday 22 September.", "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": "1987-09-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-22", "confidence": "determinate" } ], "quote": "In Zunyi, Mahālaya Amāvāsyā 1987 falls on Tuesday 22 September. Amāvasyā runs from 09:52 on Tue 22 Sep to 11:08 on Wed 23 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1399, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-09-23T11:08:13+08:00", "utc": "1987-09-23T03:08:13Z", "ms": 559364893355.9653 }, "end": { "local": "1987-09-24T11:57:09+08:00", "utc": "1987-09-24T03:57:09Z", "ms": 559454228642.919 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-23T11:08:13+08:00", "utc": "1987-09-23T03:08:13Z", "ms": 559364893355.9653 }, "end": { "local": "1987-09-24T11:57:09+08:00", "utc": "1987-09-24T03:57:09Z", "ms": 559454228642.919 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-09-23", "window": { "start": { "local": "1987-09-23T12:20:48+08:00", "utc": "1987-09-23T04:20:48Z", "ms": 559369248154.4968 }, "end": { "local": "1987-09-23T13:08:48+08:00", "utc": "1987-09-23T05:08:48Z", "ms": 559372128154.4968 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-09-24", "window": { "start": { "local": "1987-09-24T12:20:27+08:00", "utc": "1987-09-24T04:20:27Z", "ms": 559455627236.029 }, "end": { "local": "1987-09-24T13:08:27+08:00", "utc": "1987-09-24T05:08:27Z", "ms": 559458507236.029 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 11:08 on Wed 23 Sep to 11:57 on Thu 24 Sep.", "fact": "1987-09-23T03:08:13Z → 1987-09-24T03:57:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 23rd, 12:20–13:08 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "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 1399 s" }, { "step": "ruling", "text": "Navarātrārambha, Zunyi, 1987: Wednesday 23 September.", "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": "1987-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-24", "confidence": "determinate" } ], "quote": "In Zunyi, Navarātrārambha (Navratri) 1987 falls on Wednesday 23 September. Pratipadā runs from 11:08 on Wed 23 Sep to 11:57 on Thu 24 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-09-26", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 474, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-09-26T12:11:51+08:00", "utc": "1987-09-26T04:11:51Z", "ms": 559627911460.0846 }, "end": { "local": "1987-09-27T11:39:15+08:00", "utc": "1987-09-27T03:39:15Z", "ms": 559712354728.5385 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-26T12:11:51+08:00", "utc": "1987-09-26T04:11:51Z", "ms": 559627911460.0846 }, "end": { "local": "1987-09-27T11:39:15+08:00", "utc": "1987-09-27T03:39:15Z", "ms": 559712354728.5385 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-09-26", "window": { "start": { "local": "1987-09-26T12:19:46+08:00", "utc": "1987-09-26T04:19:46Z", "ms": 559628385812.2437 }, "end": { "local": "1987-09-26T13:07:46+08:00", "utc": "1987-09-26T05:07:46Z", "ms": 559631265812.2437 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-09-27", "window": { "start": { "local": "1987-09-27T12:19:25+08:00", "utc": "1987-09-27T04:19:25Z", "ms": 559714765341.4473 }, "end": { "local": "1987-09-27T13:07:25+08:00", "utc": "1987-09-27T05:07:25Z", "ms": 559717645341.4473 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:12 on Sat 26 Sep to 11:39 on Sun 27 Sep.", "fact": "1987-09-26T04:11:51Z → 1987-09-27T03:39:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 26th, 12:19–13:07 on the 27th.", "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 26th and 0 of 48 on the 27th.", "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 474 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Saturday 26 September.", "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": "1987-09-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-26", "confidence": "boundary" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Saturday 26 September. Caturthī runs from 12:12 on Sat 26 Sep to 11:39 on Sun 27 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-09-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 341, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-09-29T09:20:31+08:00", "utc": "1987-09-29T01:20:31Z", "ms": 559876831463.8093 }, "end": { "local": "1987-09-30T07:37:48+08:00", "utc": "1987-09-29T23:37:48Z", "ms": 559957068142.9117 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-29T09:20:31+08:00", "utc": "1987-09-29T01:20:31Z", "ms": 559876831463.8093 }, "end": { "local": "1987-09-30T07:37:48+08:00", "utc": "1987-09-29T23:37:48Z", "ms": 559957068142.9117 } }, "kaala": "udaya-1", "days": [ { "local_date": "1987-09-29", "window": { "start": { "local": "1987-09-29T06:43:54+08:00", "utc": "1987-09-28T22:43:54Z", "ms": 559867434213.9894 }, "end": { "local": "1987-09-29T07:31:45+08:00", "utc": "1987-09-28T23:31:45Z", "ms": 559870304981.4647 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-09-30", "window": { "start": { "local": "1987-09-30T06:44:23+08:00", "utc": "1987-09-29T22:44:23Z", "ms": 559953863280.7571 }, "end": { "local": "1987-09-30T07:32:08+08:00", "utc": "1987-09-29T23:32:08Z", "ms": 559956727524.1228 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:21 on Tue 29 Sep to 07:38 on Wed 30 Sep.", "fact": "1987-09-29T01:20:31Z → 1987-09-29T23:37:48Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:44–07:32 on the 29th, 06:44–07:32 on the 30th.", "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 48 minutes on the 29th and 48 of 48 on the 30th.", "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 341 s" }, { "step": "ruling", "text": "Durgā Saptamī, Zunyi, 1987: Wednesday 30 September.", "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": "1987-09-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-30", "confidence": "determinate" } ], "quote": "In Zunyi, Durgā Saptamī 1987 falls on Wednesday 30 September. Saptamī runs from 09:21 on Tue 29 Sep to 07:38 on Wed 30 Sep and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16837, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-09-30T07:37:48+08:00", "utc": "1987-09-29T23:37:48Z", "ms": 559957068142.9117 }, "end": { "local": "1987-10-01T05:35:48+08:00", "utc": "1987-09-30T21:35:48Z", "ms": 560036148018.4012 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-09-30T07:37:48+08:00", "utc": "1987-09-29T23:37:48Z", "ms": 559957068142.9117 }, "end": { "local": "1987-10-01T05:35:48+08:00", "utc": "1987-09-30T21:35:48Z", "ms": 560036148018.4012 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-09-30", "window": { "start": { "local": "1987-09-30T12:18:25+08:00", "utc": "1987-09-30T04:18:25Z", "ms": 559973905105.9999 }, "end": { "local": "1987-09-30T13:06:25+08:00", "utc": "1987-09-30T05:06:25Z", "ms": 559976785105.9999 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-10-01", "window": { "start": { "local": "1987-10-01T12:18:05+08:00", "utc": "1987-10-01T04:18:05Z", "ms": 560060285481.927 }, "end": { "local": "1987-10-01T13:06:05+08:00", "utc": "1987-10-01T05:06:05Z", "ms": 560063165481.927 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 07:38 on Wed 30 Sep to 05:36 on Thu 1 Oct.", "fact": "1987-09-29T23:37:48Z → 1987-09-30T21:35:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:18–13:06 on the 30th, 12:18–13:06 on the 1st.", "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 30th and 0 of 48 on the 1st.", "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 16837 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Zunyi, 1987: Wednesday 30 September.", "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": "1987-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-09-30", "confidence": "determinate" } ], "quote": "In Zunyi, Mahāṣṭamī (Durga Ashtami) 1987 falls on Wednesday 30 September. Aṣṭamī runs from 07:38 on Wed 30 Sep to 05:36 on Thu 1 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24137, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1987-10-01T05:35:48+08:00", "utc": "1987-09-30T21:35:48Z", "ms": 560036148018.4012 }, "end": { "local": "1987-10-02T03:17:30+08:00", "utc": "1987-10-01T19:17:30Z", "ms": 560114250447.007 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-10-01T05:35:48+08:00", "utc": "1987-09-30T21:35:48Z", "ms": 560036148018.4012 }, "end": { "local": "1987-10-02T03:17:30+08:00", "utc": "1987-10-01T19:17:30Z", "ms": 560114250447.007 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-01", "window": { "start": { "local": "1987-10-01T12:18:05+08:00", "utc": "1987-10-01T04:18:05Z", "ms": 560060285481.927 }, "end": { "local": "1987-10-01T13:06:05+08:00", "utc": "1987-10-01T05:06:05Z", "ms": 560063165481.927 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-10-02", "window": { "start": { "local": "1987-10-02T12:17:46+08:00", "utc": "1987-10-02T04:17:46Z", "ms": 560146666118.1832 }, "end": { "local": "1987-10-02T13:05:46+08:00", "utc": "1987-10-02T05:05:46Z", "ms": 560149546118.1832 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 05:36 on Thu 1 Oct to 03:18 on Fri 2 Oct.", "fact": "1987-09-30T21:35:48Z → 1987-10-01T19:17:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:18–13:06 on the 1st, 12:18–13:06 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "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 24137 s" }, { "step": "ruling", "text": "Mahānavamī, Zunyi, 1987: Thursday 1 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": "1987-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-01", "confidence": "determinate" } ], "quote": "In Zunyi, Mahānavamī 1987 falls on Thursday 1 October. Navamī runs from 05:36 on Thu 1 Oct to 03:18 on Fri 2 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9473, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1987-10-02T03:17:30+08:00", "utc": "1987-10-01T19:17:30Z", "ms": 560114250447.007 }, "end": { "local": "1987-10-03T00:46:41+08:00", "utc": "1987-10-02T16:46:41Z", "ms": 560191601136.8932 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1987-10-02T16:00:17+08:00", "utc": "1987-10-02T08:00:17Z", "ms": 560160017438.6671 }, "end": { "local": "1987-10-03T00:46:41+08:00", "utc": "1987-10-02T16:46:41Z", "ms": 560191601136.8932 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1987-10-02T16:00:17+08:00", "utc": "1987-10-02T08:00:17Z", "ms": 560160017438.6671 }, "end": { "local": "1987-10-03T14:09:33+08:00", "utc": "1987-10-03T06:09:33Z", "ms": 560239773398.91 } } }, "kaala": "daytime", "days": [ { "local_date": "1987-10-02", "window": { "start": { "local": "1987-10-02T06:45:22+08:00", "utc": "1987-10-01T22:45:22Z", "ms": 560126722024.2404 }, "end": { "local": "1987-10-02T18:38:10+08:00", "utc": "1987-10-02T10:38:10Z", "ms": 560169490212.1261 } }, "covered_min": 158, "window_min": 713, "qualifies": true }, { "local_date": "1987-10-03", "window": { "start": { "local": "1987-10-03T06:45:52+08:00", "utc": "1987-10-02T22:45:52Z", "ms": 560213151726.8578 }, "end": { "local": "1987-10-03T18:37:02+08:00", "utc": "1987-10-03T10:37:02Z", "ms": 560255822344.4678 } }, "covered_min": 0, "window_min": 711, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 03:18 on Fri 2 Oct to 00:47 on Sat 3 Oct, and Śravaṇa from 16:00 on Fri 2 Oct to 14:10 on Sat 3 Oct. They are together from 16:00 on Fri 2 Oct to 00:47 on Sat 3 Oct.", "fact": "1987-10-02T08:00:17Z → 1987-10-02T16:46:41Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:45–18:38 on the 2nd, 06:46–18:37 on the 3rd.", "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 158 of 713 minutes on the 2nd and 0 of 711 on the 3rd.", "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 9473 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Zunyi, 1987: Friday 2 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": "1987-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-02", "confidence": "determinate" } ], "quote": "In Zunyi, Vijayā Daśamī (Dussehra) 1987 falls on Friday 2 October. Daśamī runs from 03:18 on Fri 2 Oct to 00:47 on Sat 3 Oct and is with Śravaṇa in the day time that day, for 158 minutes.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-10-03", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21551, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-10-03T00:46:41+08:00", "utc": "1987-10-02T16:46:41Z", "ms": 560191601136.8932 }, "end": { "local": "1987-10-03T22:07:56+08:00", "utc": "1987-10-03T14:07:56Z", "ms": 560268475857.166 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-10-03T00:46:41+08:00", "utc": "1987-10-02T16:46:41Z", "ms": 560191601136.8932 }, "end": { "local": "1987-10-03T22:07:56+08:00", "utc": "1987-10-03T14:07:56Z", "ms": 560268475857.166 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-10-03", "window": { "start": { "local": "1987-10-03T06:45:52+08:00", "utc": "1987-10-02T22:45:52Z", "ms": 560213151726.8578 }, "end": { "local": "1987-10-03T06:45:52+08:00", "utc": "1987-10-02T22:45:52Z", "ms": 560213151726.8578 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-10-04", "window": { "start": { "local": "1987-10-04T06:46:22+08:00", "utc": "1987-10-03T22:46:22Z", "ms": 560299581669.3573 }, "end": { "local": "1987-10-04T06:46:22+08:00", "utc": "1987-10-03T22:46:22Z", "ms": 560299581669.3573 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:47 on Sat 3 Oct to 22:08 on Sat 3 Oct.", "fact": "1987-10-02T16:46:41Z → 1987-10-03T14:07:56Z" }, { "step": "kaala", "text": "Sunrise is at 06:46 on the 3rd and 06:46 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 3rd and is not 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 21551 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Zunyi, 1987: Saturday 3 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": "1987-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-03", "confidence": "determinate" } ], "quote": "In Zunyi, Pāśāṅkuśā Ekādaśī 1987 falls on Saturday 3 October. Ekādaśī runs from 00:47 on Sat 3 Oct to 22:08 on Sat 3 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-10-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-10-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2803, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-10-04T19:26:40+08:00", "utc": "1987-10-04T11:26:40Z", "ms": 560345199896.6656 }, "end": { "local": "1987-10-05T16:49:03+08:00", "utc": "1987-10-05T08:49:03Z", "ms": 560422143381.1937 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1987-10-04T19:26:40+08:00", "utc": "1987-10-04T11:26:40Z", "ms": 560345199896.6656 }, "end": { "local": "1987-10-05T16:49:03+08:00", "utc": "1987-10-05T08:49:03Z", "ms": 560422143381.1937 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-04", "window": { "start": { "local": "1987-10-04T18:35:55+08:00", "utc": "1987-10-04T10:35:55Z", "ms": 560342154843.6355 }, "end": { "local": "1987-10-04T20:13:22+08:00", "utc": "1987-10-04T12:13:22Z", "ms": 560348002446.8802 } }, "covered_min": 47, "window_min": 97, "qualifies": true }, { "local_date": "1987-10-05", "window": { "start": { "local": "1987-10-05T18:34:48+08:00", "utc": "1987-10-05T10:34:48Z", "ms": 560428487739.5088 }, "end": { "local": "1987-10-05T20:12:28+08:00", "utc": "1987-10-05T12:12:28Z", "ms": 560434348352.9081 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:27 on Sun 4 Oct to 16:49 on Mon 5 Oct.", "fact": "1987-10-04T11:26:40Z → 1987-10-05T08:49:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:13 on the 4th, 18:35–20:12 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 47 of 97 minutes on the 4th and 0 of 98 on the 5th.", "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 2803 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Sunday 4 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": "1987-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-04", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Sunday 4 October. Trayodaśī runs from 19:27 on Sun 4 Oct to 16:49 on Mon 5 Oct and covers 47 of 97 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-10-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42541, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-10-10T08:38:05+08:00", "utc": "1987-10-10T00:38:05Z", "ms": 560824684708.2535 }, "end": { "local": "1987-10-11T08:43:08+08:00", "utc": "1987-10-11T00:43:08Z", "ms": 560911388348.3057 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-10T08:38:05+08:00", "utc": "1987-10-10T00:38:05Z", "ms": 560824684708.2535 }, "end": { "local": "1987-10-11T08:43:08+08:00", "utc": "1987-10-11T00:43:08Z", "ms": 560911388348.3057 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-10-10", "window": { "start": { "local": "1987-10-10T20:27:05+08:00", "utc": "1987-10-10T12:27:05Z", "ms": 560867225312.264 }, "end": { "local": "1987-10-10T20:27:05+08:00", "utc": "1987-10-10T12:27:05Z", "ms": 560867225312.264 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-10-11", "window": { "start": { "local": "1987-10-11T21:11:56+08:00", "utc": "1987-10-11T13:11:56Z", "ms": 560956316395.2982 }, "end": { "local": "1987-10-11T21:11:56+08:00", "utc": "1987-10-11T13:11:56Z", "ms": 560956316395.2982 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:38 on Sat 10 Oct to 08:43 on Sun 11 Oct.", "fact": "1987-10-10T00:38:05Z → 1987-10-11T00:43:08Z" }, { "step": "kaala", "text": "Moonrise is at 20:27 on the 10th and 21:12 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "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 42541 s" }, { "step": "ruling", "text": "Karaka Caturthī, Zunyi, 1987: Saturday 10 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": "1987-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-10", "confidence": "determinate" } ], "quote": "In Zunyi, Karaka Caturthī (Karwa Chauth) 1987 falls on Saturday 10 October. Caturthī runs from 08:38 on Sat 10 Oct to 08:43 on Sun 11 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-10-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42541, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-10-10T08:38:05+08:00", "utc": "1987-10-10T00:38:05Z", "ms": 560824684708.2535 }, "end": { "local": "1987-10-11T08:43:08+08:00", "utc": "1987-10-11T00:43:08Z", "ms": 560911388348.3057 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-10T08:38:05+08:00", "utc": "1987-10-10T00:38:05Z", "ms": 560824684708.2535 }, "end": { "local": "1987-10-11T08:43:08+08:00", "utc": "1987-10-11T00:43:08Z", "ms": 560911388348.3057 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-10-10", "window": { "start": { "local": "1987-10-10T20:27:05+08:00", "utc": "1987-10-10T12:27:05Z", "ms": 560867225312.264 }, "end": { "local": "1987-10-10T20:27:05+08:00", "utc": "1987-10-10T12:27:05Z", "ms": 560867225312.264 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-10-11", "window": { "start": { "local": "1987-10-11T21:11:56+08:00", "utc": "1987-10-11T13:11:56Z", "ms": 560956316395.2982 }, "end": { "local": "1987-10-11T21:11:56+08:00", "utc": "1987-10-11T13:11:56Z", "ms": 560956316395.2982 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:38 on Sat 10 Oct to 08:43 on Sun 11 Oct.", "fact": "1987-10-10T00:38:05Z → 1987-10-11T00:43:08Z" }, { "step": "kaala", "text": "Moonrise is at 20:27 on the 10th and 21:12 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "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 42541 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Saturday 10 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": "1987-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-10", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Saturday 10 October. Caturthī runs from 08:38 on Sat 10 Oct to 08:43 on Sun 11 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-10-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34114, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-10-14T12:56:41+08:00", "utc": "1987-10-14T04:56:41Z", "ms": 561185800534.8475 }, "end": { "local": "1987-10-15T15:18:30+08:00", "utc": "1987-10-15T07:18:30Z", "ms": 561280709774.9312 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-14T12:56:41+08:00", "utc": "1987-10-14T04:56:41Z", "ms": 561185800534.8475 }, "end": { "local": "1987-10-15T15:18:30+08:00", "utc": "1987-10-15T07:18:30Z", "ms": 561280709774.9312 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-10-14", "window": { "start": { "local": "1987-10-14T23:50:35+08:00", "utc": "1987-10-14T15:50:35Z", "ms": 561225034523.6405 }, "end": { "local": "1987-10-14T23:50:35+08:00", "utc": "1987-10-14T15:50:35Z", "ms": 561225034523.6405 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-10-15", "window": { "start": { "local": "1987-10-16T00:47:04+08:00", "utc": "1987-10-15T16:47:04Z", "ms": 561314823583.6818 }, "end": { "local": "1987-10-16T00:47:04+08:00", "utc": "1987-10-15T16:47:04Z", "ms": 561314823583.6818 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:57 on Wed 14 Oct to 15:18 on Thu 15 Oct.", "fact": "1987-10-14T04:56:41Z → 1987-10-15T07:18:30Z" }, { "step": "kaala", "text": "Moonrise is at 23:51 on the 14th and 00:47 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 14th and is not on the 15th.", "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 34114 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Zunyi, 1987: Wednesday 14 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": "1987-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-14", "confidence": "determinate" } ], "quote": "In Zunyi, Ahoyī Aṣṭamī 1987 falls on Wednesday 14 October. Aṣṭamī runs from 12:57 on Wed 14 Oct to 15:18 on Thu 15 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-10-18", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30734, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-10-17T20:14:49+08:00", "utc": "1987-10-17T12:14:49Z", "ms": 561471289307.775 }, "end": { "local": "1987-10-18T22:22:17+08:00", "utc": "1987-10-18T14:22:17Z", "ms": 561565336750.8032 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-17T20:14:49+08:00", "utc": "1987-10-17T12:14:49Z", "ms": 561471289307.775 }, "end": { "local": "1987-10-18T22:22:17+08:00", "utc": "1987-10-18T14:22:17Z", "ms": 561565336750.8032 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-10-18", "window": { "start": { "local": "1987-10-18T06:53:55+08:00", "utc": "1987-10-17T22:53:55Z", "ms": 561509635026.9373 }, "end": { "local": "1987-10-18T06:53:55+08:00", "utc": "1987-10-17T22:53:55Z", "ms": 561509635026.9373 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-10-19", "window": { "start": { "local": "1987-10-19T06:54:30+08:00", "utc": "1987-10-18T22:54:30Z", "ms": 561596070346.1692 }, "end": { "local": "1987-10-19T06:54:30+08:00", "utc": "1987-10-18T22:54:30Z", "ms": 561596070346.1692 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:15 on Sat 17 Oct to 22:22 on Sun 18 Oct.", "fact": "1987-10-17T12:14:49Z → 1987-10-18T14:22:17Z" }, { "step": "kaala", "text": "Sunrise is at 06:54 on the 18th and 06:55 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 not on the 19th.", "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 30734 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Zunyi, 1987: Sunday 18 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": "1987-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-18", "confidence": "determinate" } ], "quote": "In Zunyi, Ramā Ekādaśī 1987 falls on Sunday 18 October. Ekādaśī runs from 20:15 on Sat 17 Oct to 22:22 on Sun 18 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-10-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8444, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-10-18T22:22:17+08:00", "utc": "1987-10-18T14:22:17Z", "ms": 561565336750.8032 }, "end": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-18T22:22:17+08:00", "utc": "1987-10-18T14:22:17Z", "ms": 561565336750.8032 }, "end": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-18", "window": { "start": { "local": "1987-10-18T18:21:05+08:00", "utc": "1987-10-18T10:21:05Z", "ms": 561550865173.8738 }, "end": { "local": "1987-10-18T20:01:33+08:00", "utc": "1987-10-18T12:01:33Z", "ms": 561556892530.1798 } }, "covered_min": 0, "window_min": 100, "qualifies": false }, { "local_date": "1987-10-19", "window": { "start": { "local": "1987-10-19T18:20:07+08:00", "utc": "1987-10-19T10:20:07Z", "ms": 561637206752.182 }, "end": { "local": "1987-10-19T20:00:47+08:00", "utc": "1987-10-19T12:00:47Z", "ms": 561643246664.7699 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:22 on Sun 18 Oct to 00:02 on Tue 20 Oct.", "fact": "1987-10-18T14:22:17Z → 1987-10-19T16:01:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–20:02 on the 18th, 18:20–20:01 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 0 of 100 minutes on the 18th and 101 of 101 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: purvaviddha → only-day · margin 8444 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Zunyi, 1987: Monday 19 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": "1987-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-19", "confidence": "determinate" } ], "quote": "In Zunyi, Govatsa Dvādaśī (Vasu Baras) 1987 falls on Monday 19 October. Dvādaśī runs from 22:22 on Sun 18 Oct to 00:02 on Tue 20 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14452, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 }, "end": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 }, "end": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-19", "window": { "start": { "local": "1987-10-19T18:20:07+08:00", "utc": "1987-10-19T10:20:07Z", "ms": 561637206752.182 }, "end": { "local": "1987-10-19T20:00:47+08:00", "utc": "1987-10-19T12:00:47Z", "ms": 561643246664.7699 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1987-10-20", "window": { "start": { "local": "1987-10-20T18:19:09+08:00", "utc": "1987-10-20T10:19:09Z", "ms": 561723549163.2043 }, "end": { "local": "1987-10-20T20:00:02+08:00", "utc": "1987-10-20T12:00:02Z", "ms": 561729601578.856 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:02 on Tue 20 Oct to 01:07 on Wed 21 Oct.", "fact": "1987-10-19T16:01:39Z → 1987-10-20T17:06:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:20–20:01 on the 19th, 18:19–20:00 on the 20th.", "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 101 minutes on the 19th and 101 of 101 on the 20th.", "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 14452 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Zunyi, 1987: Tuesday 20 October.", "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": "1987-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-20", "confidence": "determinate" } ], "quote": "In Zunyi, Yama Dīpadāna 1987 falls on Tuesday 20 October. Trayodaśī runs from 00:02 on Tue 20 Oct to 01:07 on Wed 21 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-10-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14452, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 }, "end": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-20T00:01:39+08:00", "utc": "1987-10-19T16:01:39Z", "ms": 561657698963.2701 }, "end": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-19", "window": { "start": { "local": "1987-10-19T18:20:07+08:00", "utc": "1987-10-19T10:20:07Z", "ms": 561637206752.182 }, "end": { "local": "1987-10-19T20:00:47+08:00", "utc": "1987-10-19T12:00:47Z", "ms": 561643246664.7699 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1987-10-20", "window": { "start": { "local": "1987-10-20T18:19:09+08:00", "utc": "1987-10-20T10:19:09Z", "ms": 561723549163.2043 }, "end": { "local": "1987-10-20T20:00:02+08:00", "utc": "1987-10-20T12:00:02Z", "ms": 561729601578.856 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:02 on Tue 20 Oct to 01:07 on Wed 21 Oct.", "fact": "1987-10-19T16:01:39Z → 1987-10-20T17:06:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:20–20:01 on the 19th, 18:19–20:00 on the 20th.", "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 101 minutes on the 19th and 101 of 101 on the 20th.", "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 14452 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Tuesday 20 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": "1987-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-20", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Tuesday 20 October. Trayodaśī runs from 00:02 on Tue 20 Oct to 01:07 on Wed 21 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13203, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "end": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "end": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 } }, "kaala": "arunodaya", "days": [ { "local_date": "1987-10-21", "window": { "start": { "local": "1987-10-21T05:14:50+08:00", "utc": "1987-10-20T21:14:50Z", "ms": 561762889864.9395 }, "end": { "local": "1987-10-21T06:55:42+08:00", "utc": "1987-10-20T22:55:42Z", "ms": 561768942280.5911 } }, "covered_min": 101, "window_min": 101, "qualifies": true }, { "local_date": "1987-10-22", "window": { "start": { "local": "1987-10-22T05:15:14+08:00", "utc": "1987-10-21T21:15:14Z", "ms": 561849314037.0829 }, "end": { "local": "1987-10-22T06:56:19+08:00", "utc": "1987-10-21T22:56:19Z", "ms": 561855378899.2391 } }, "covered_min": 0, "window_min": 101, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:07 on Wed 21 Oct to 01:35 on Thu 22 Oct.", "fact": "1987-10-20T17:06:45Z → 1987-10-21T17:35:11Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:15–06:56 on the 21st, 05:15–06:56 on the 22nd.", "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 101 of 101 minutes on the 21st and 0 of 101 on the 22nd.", "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 13203 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Zunyi, 1987: Wednesday 21 October.", "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": "1987-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-21", "confidence": "determinate" } ], "quote": "In Zunyi, Naraka Caturdaśī (Choti Diwali) 1987 falls on Wednesday 21 October. Caturdaśī runs from 01:07 on Wed 21 Oct to 01:35 on Thu 22 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/shivaratri?on=1987-10-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 319, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "end": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-21T01:06:45+08:00", "utc": "1987-10-20T17:06:45Z", "ms": 561748004515.9115 }, "end": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 } }, "kaala": "nishita", "days": [ { "local_date": "1987-10-20", "window": { "start": { "local": "1987-10-21T00:13:26+08:00", "utc": "1987-10-20T16:13:26Z", "ms": 561744805721.8977 }, "end": { "local": "1987-10-21T01:01:26+08:00", "utc": "1987-10-20T17:01:26Z", "ms": 561747685721.8977 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-21", "window": { "start": { "local": "1987-10-22T00:13:16+08:00", "utc": "1987-10-21T16:13:16Z", "ms": 561831195666.1531 }, "end": { "local": "1987-10-22T01:01:16+08:00", "utc": "1987-10-21T17:01:16Z", "ms": 561834075666.1531 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:07 on Wed 21 Oct to 01:35 on Thu 22 Oct.", "fact": "1987-10-20T17:06:45Z → 1987-10-21T17:35:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:13–01:01 on the 20th, 00:13–01:01 on the 21st.", "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 20th and 48 of 48 on the 21st.", "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 319 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Wednesday 21 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": "1987-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-21", "confidence": "boundary" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Wednesday 21 October. Caturdaśī runs from 01:07 on Wed 21 Oct to 01:35 on Thu 22 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19759, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "end": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "end": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-21", "window": { "start": { "local": "1987-10-21T18:18:12+08:00", "utc": "1987-10-21T10:18:12Z", "ms": 561809892433.0671 }, "end": { "local": "1987-10-21T19:59:17+08:00", "utc": "1987-10-21T11:59:17Z", "ms": 561815957295.2234 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1987-10-22", "window": { "start": { "local": "1987-10-22T18:17:17+08:00", "utc": "1987-10-22T10:17:17Z", "ms": 561896236587.2783 }, "end": { "local": "1987-10-22T19:58:34+08:00", "utc": "1987-10-22T11:58:34Z", "ms": 561902313835.9426 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 01:35 on Thu 22 Oct to 01:28 on Fri 23 Oct.", "fact": "1987-10-21T17:35:11Z → 1987-10-22T17:27:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:59 on the 21st, 18:17–19:59 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 101 minutes on the 21st and 101 of 101 on the 22nd.", "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 19759 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Zunyi, 1987: Thursday 22 October.", "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": "1987-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-22", "confidence": "determinate" } ], "quote": "In Zunyi, Lakṣmī Pūjā (Diwali) 1987 falls on Thursday 22 October. Amāvasyā runs from 01:35 on Thu 22 Oct to 01:28 on Fri 23 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1607, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "end": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-22T01:35:11+08:00", "utc": "1987-10-21T17:35:11Z", "ms": 561836111407.628 }, "end": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 } }, "kaala": "nishita", "days": [ { "local_date": "1987-10-21", "window": { "start": { "local": "1987-10-22T00:13:16+08:00", "utc": "1987-10-21T16:13:16Z", "ms": 561831195666.1531 }, "end": { "local": "1987-10-22T01:01:16+08:00", "utc": "1987-10-21T17:01:16Z", "ms": 561834075666.1531 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-22", "window": { "start": { "local": "1987-10-23T00:13:06+08:00", "utc": "1987-10-22T16:13:06Z", "ms": 561917586269.7697 }, "end": { "local": "1987-10-23T01:01:06+08:00", "utc": "1987-10-22T17:01:06Z", "ms": 561920466269.7697 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 01:35 on Thu 22 Oct to 01:28 on Fri 23 Oct.", "fact": "1987-10-21T17:35:11Z → 1987-10-22T17:27:53Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:13–01:01 on the 21st, 00:13–01:01 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "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 1607 s" }, { "step": "ruling", "text": "Kālī Pūjā, Zunyi, 1987: Thursday 22 October.", "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": "1987-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-22", "confidence": "determinate" } ], "quote": "In Zunyi, Kālī Pūjā 1987 falls on Thursday 22 October. Amāvasyā runs from 01:35 on Thu 22 Oct to 01:28 on Fri 23 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38686, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-23", "window": { "start": { "local": "1987-10-23T12:12:39+08:00", "utc": "1987-10-23T04:12:39Z", "ms": 561960758801.5006 }, "end": { "local": "1987-10-23T13:00:39+08:00", "utc": "1987-10-23T05:00:39Z", "ms": 561963638801.5006 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-10-24", "window": { "start": { "local": "1987-10-24T12:12:31+08:00", "utc": "1987-10-24T04:12:31Z", "ms": 562047150542.9592 }, "end": { "local": "1987-10-24T13:00:31+08:00", "utc": "1987-10-24T05:00:31Z", "ms": 562050030542.9592 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct.", "fact": "1987-10-22T17:27:53Z → 1987-10-23T16:48:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 23rd, 12:13–13:01 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "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 38686 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Zunyi, 1987: Friday 23 October.", "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": "1987-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-23", "confidence": "determinate" } ], "quote": "In Zunyi, Govardhana Pūjā 1987 falls on Friday 23 October. Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17415, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-10-22", "window": { "start": { "local": "1987-10-22T18:17:17+08:00", "utc": "1987-10-22T10:17:17Z", "ms": 561896236587.2783 }, "end": { "local": "1987-10-22T19:58:34+08:00", "utc": "1987-10-22T11:58:34Z", "ms": 561902313835.9426 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1987-10-23", "window": { "start": { "local": "1987-10-23T18:16:22+08:00", "utc": "1987-10-23T10:16:22Z", "ms": 561982581650.7402 }, "end": { "local": "1987-10-23T19:57:51+08:00", "utc": "1987-10-23T11:57:51Z", "ms": 561988671222.3837 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct.", "fact": "1987-10-22T17:27:53Z → 1987-10-23T16:48:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:17–19:59 on the 22nd, 18:16–19:58 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 0 of 101 minutes on the 22nd and 101 of 101 on the 23rd.", "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 17415 s" }, { "step": "ruling", "text": "Bali Pūjā, Zunyi, 1987: Friday 23 October.", "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": "1987-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-23", "confidence": "determinate" } ], "quote": "In Zunyi, Bali Pūjā 1987 falls on Friday 23 October. Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19743, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-23T01:27:53+08:00", "utc": "1987-10-22T17:27:53Z", "ms": 561922072847.0112 }, "end": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 } }, "kaala": "purvahna", "days": [ { "local_date": "1987-10-23", "window": { "start": { "local": "1987-10-23T06:56:56+08:00", "utc": "1987-10-22T22:56:56Z", "ms": 561941815952.261 }, "end": { "local": "1987-10-23T10:43:25+08:00", "utc": "1987-10-23T02:43:25Z", "ms": 561955404518.4208 } }, "covered_min": 226, "window_min": 226, "qualifies": true }, { "local_date": "1987-10-24", "window": { "start": { "local": "1987-10-24T06:57:33+08:00", "utc": "1987-10-23T22:57:33Z", "ms": 562028253438.0656 }, "end": { "local": "1987-10-24T10:43:32+08:00", "utc": "1987-10-24T02:43:32Z", "ms": 562041811507.9948 } }, "covered_min": 0, "window_min": 226, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct.", "fact": "1987-10-22T17:27:53Z → 1987-10-23T16:48:06Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:57–10:43 on the 23rd, 06:58–10:44 on the 24th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 226 of 226 minutes on the 23rd and 0 of 226 on the 24th.", "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 19743 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Zunyi, 1987: Friday 23 October.", "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": "1987-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-23", "confidence": "determinate" } ], "quote": "In Zunyi, Dyūta Pratipad 1987 falls on Friday 23 October. Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38407, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 }, "end": { "local": "1987-10-24T23:40:37+08:00", "utc": "1987-10-24T15:40:37Z", "ms": 562088437255.8446 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-24T00:48:06+08:00", "utc": "1987-10-23T16:48:06Z", "ms": 562006085798.8693 }, "end": { "local": "1987-10-24T23:40:37+08:00", "utc": "1987-10-24T15:40:37Z", "ms": 562088437255.8446 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-23", "window": { "start": { "local": "1987-10-23T12:12:39+08:00", "utc": "1987-10-23T04:12:39Z", "ms": 561960758801.5006 }, "end": { "local": "1987-10-23T13:00:39+08:00", "utc": "1987-10-23T05:00:39Z", "ms": 561963638801.5006 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-24", "window": { "start": { "local": "1987-10-24T12:12:31+08:00", "utc": "1987-10-24T04:12:31Z", "ms": 562047150542.9592 }, "end": { "local": "1987-10-24T13:00:31+08:00", "utc": "1987-10-24T05:00:31Z", "ms": 562050030542.9592 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 00:48 on Sat 24 Oct to 23:41 on Sat 24 Oct.", "fact": "1987-10-23T16:48:06Z → 1987-10-24T15:40:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 23rd, 12:13–13:01 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "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 38407 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Zunyi, 1987: Saturday 24 October.", "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": "1987-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-24", "confidence": "determinate" } ], "quote": "In Zunyi, Yama Dvitīyā (Bhai Dooj) 1987 falls on Saturday 24 October. Dvitīyā runs from 00:48 on Sat 24 Oct to 23:41 on Sat 24 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26662, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-10-25T22:10:57+08:00", "utc": "1987-10-25T14:10:57Z", "ms": 562169456743.1348 }, "end": { "local": "1987-10-26T20:24:38+08:00", "utc": "1987-10-26T12:24:38Z", "ms": 562249478475.2047 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-25T22:10:57+08:00", "utc": "1987-10-25T14:10:57Z", "ms": 562169456743.1348 }, "end": { "local": "1987-10-26T20:24:38+08:00", "utc": "1987-10-26T12:24:38Z", "ms": 562249478475.2047 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-25", "window": { "start": { "local": "1987-10-25T12:12:23+08:00", "utc": "1987-10-25T04:12:23Z", "ms": 562133542978.2736 }, "end": { "local": "1987-10-25T13:00:23+08:00", "utc": "1987-10-25T05:00:23Z", "ms": 562136422978.2736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-26", "window": { "start": { "local": "1987-10-26T12:12:16+08:00", "utc": "1987-10-26T04:12:16Z", "ms": 562219936117.5359 }, "end": { "local": "1987-10-26T13:00:16+08:00", "utc": "1987-10-26T05:00:16Z", "ms": 562222816117.5359 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:11 on Sun 25 Oct to 20:25 on Mon 26 Oct.", "fact": "1987-10-25T14:10:57Z → 1987-10-26T12:24:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 25th, 12:12–13:00 on the 26th.", "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 25th and 48 of 48 on the 26th.", "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 26662 s" }, { "step": "ruling", "text": "Nāga Caturthī, Zunyi, 1987: Monday 26 October.", "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": "1987-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-26", "confidence": "determinate" } ], "quote": "In Zunyi, Nāga Caturthī 1987 falls on Monday 26 October. Caturthī runs from 22:11 on Sun 25 Oct to 20:25 on Mon 26 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-10-26", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26662, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-10-25T22:10:57+08:00", "utc": "1987-10-25T14:10:57Z", "ms": 562169456743.1348 }, "end": { "local": "1987-10-26T20:24:38+08:00", "utc": "1987-10-26T12:24:38Z", "ms": 562249478475.2047 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-25T22:10:57+08:00", "utc": "1987-10-25T14:10:57Z", "ms": 562169456743.1348 }, "end": { "local": "1987-10-26T20:24:38+08:00", "utc": "1987-10-26T12:24:38Z", "ms": 562249478475.2047 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-25", "window": { "start": { "local": "1987-10-25T12:12:23+08:00", "utc": "1987-10-25T04:12:23Z", "ms": 562133542978.2736 }, "end": { "local": "1987-10-25T13:00:23+08:00", "utc": "1987-10-25T05:00:23Z", "ms": 562136422978.2736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-26", "window": { "start": { "local": "1987-10-26T12:12:16+08:00", "utc": "1987-10-26T04:12:16Z", "ms": 562219936117.5359 }, "end": { "local": "1987-10-26T13:00:16+08:00", "utc": "1987-10-26T05:00:16Z", "ms": 562222816117.5359 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:11 on Sun 25 Oct to 20:25 on Mon 26 Oct.", "fact": "1987-10-25T14:10:57Z → 1987-10-26T12:24:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 25th, 12:12–13:00 on the 26th.", "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 25th and 48 of 48 on the 26th.", "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 26662 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Monday 26 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": "1987-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-26", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Monday 26 October. Caturthī runs from 22:11 on Sun 25 Oct to 20:25 on Mon 26 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-10-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12130, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-10-27T18:26:54+08:00", "utc": "1987-10-27T10:26:54Z", "ms": 562328813907.3383 }, "end": { "local": "1987-10-28T16:22:15+08:00", "utc": "1987-10-28T08:22:15Z", "ms": 562407734588.8152 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-27T18:26:54+08:00", "utc": "1987-10-27T10:26:54Z", "ms": 562328813907.3383 }, "end": { "local": "1987-10-28T16:22:15+08:00", "utc": "1987-10-28T08:22:15Z", "ms": 562407734588.8152 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-27", "window": { "start": { "local": "1987-10-27T12:12:10+08:00", "utc": "1987-10-27T04:12:10Z", "ms": 562306329970.5598 }, "end": { "local": "1987-10-27T13:00:10+08:00", "utc": "1987-10-27T05:00:10Z", "ms": 562309209970.5598 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-28", "window": { "start": { "local": "1987-10-28T12:12:05+08:00", "utc": "1987-10-28T04:12:05Z", "ms": 562392724547.1577 }, "end": { "local": "1987-10-28T13:00:05+08:00", "utc": "1987-10-28T05:00:05Z", "ms": 562395604547.1577 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:27 on Tue 27 Oct to 16:22 on Wed 28 Oct.", "fact": "1987-10-27T10:26:54Z → 1987-10-28T08:22:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 27th, 12:12–13:00 on the 28th.", "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 27th and 48 of 48 on the 28th.", "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 12130 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Zunyi, 1987: Wednesday 28 October.", "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": "1987-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-28", "confidence": "determinate" } ], "quote": "In Zunyi, Sūrya Ṣaṣṭhī (Chhath) 1987 falls on Wednesday 28 October. Ṣaṣṭhī runs from 18:27 on Tue 27 Oct to 16:22 on Wed 28 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 329, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1987-10-29T14:14:25+08:00", "utc": "1987-10-29T06:14:25Z", "ms": 562486465191.3645 }, "end": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-29T14:14:25+08:00", "utc": "1987-10-29T06:14:25Z", "ms": 562486465191.3645 }, "end": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-29", "window": { "start": { "local": "1987-10-29T12:12:00+08:00", "utc": "1987-10-29T04:12:00Z", "ms": 562479119857.3838 }, "end": { "local": "1987-10-29T13:00:00+08:00", "utc": "1987-10-29T05:00:00Z", "ms": 562481999857.3838 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-10-30", "window": { "start": { "local": "1987-10-30T12:11:56+08:00", "utc": "1987-10-30T04:11:56Z", "ms": 562565515911.7133 }, "end": { "local": "1987-10-30T12:59:56+08:00", "utc": "1987-10-30T04:59:56Z", "ms": 562568395911.7133 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 14:14 on Thu 29 Oct to 12:06 on Fri 30 Oct.", "fact": "1987-10-29T06:14:25Z → 1987-10-30T04:06:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 29th, 12:12–13:00 on the 30th.", "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 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 329 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Zunyi, 1987: Friday 30 October.", "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": "1987-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-30", "confidence": "determinate" } ], "quote": "In Zunyi, Gopāṣṭamī 1987 falls on Friday 30 October. Aṣṭamī runs from 14:14 on Thu 29 Oct to 12:06 on Fri 30 Oct, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 329, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 }, "end": { "local": "1987-10-31T10:00:47+08:00", "utc": "1987-10-31T02:00:47Z", "ms": 562644047059.1017 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 }, "end": { "local": "1987-10-31T10:00:47+08:00", "utc": "1987-10-31T02:00:47Z", "ms": 562644047059.1017 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-10-30", "window": { "start": { "local": "1987-10-30T12:11:56+08:00", "utc": "1987-10-30T04:11:56Z", "ms": 562565515911.7133 }, "end": { "local": "1987-10-30T12:59:56+08:00", "utc": "1987-10-30T04:59:56Z", "ms": 562568395911.7133 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-10-31", "window": { "start": { "local": "1987-10-31T12:11:53+08:00", "utc": "1987-10-31T04:11:53Z", "ms": 562651912721.1365 }, "end": { "local": "1987-10-31T12:59:53+08:00", "utc": "1987-10-31T04:59:53Z", "ms": 562654792721.1365 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:06 on Fri 30 Oct to 10:01 on Sat 31 Oct.", "fact": "1987-10-30T04:06:26Z → 1987-10-31T02:00:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 30th, 12:12–13:00 on the 31st.", "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 30th and 0 of 48 on the 31st.", "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 329 s" }, { "step": "ruling", "text": "Durgā Navamī, Zunyi, 1987: Friday 30 October.", "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": "1987-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-30", "confidence": "determinate" } ], "quote": "In Zunyi, Durgā Navamī 1987 falls on Friday 30 October. Navamī runs from 12:06 on Fri 30 Oct to 10:01 on Sat 31 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2631, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 }, "end": { "local": "1987-10-31T10:00:47+08:00", "utc": "1987-10-31T02:00:47Z", "ms": 562644047059.1017 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-10-30T12:06:26+08:00", "utc": "1987-10-30T04:06:26Z", "ms": 562565186454.8153 }, "end": { "local": "1987-10-31T10:00:47+08:00", "utc": "1987-10-31T02:00:47Z", "ms": 562644047059.1017 } }, "kaala": "purvahna", "days": [ { "local_date": "1987-10-30", "window": { "start": { "local": "1987-10-30T07:01:27+08:00", "utc": "1987-10-29T23:01:27Z", "ms": 562546887228.273 }, "end": { "local": "1987-10-30T10:44:26+08:00", "utc": "1987-10-30T02:44:26Z", "ms": 562560266350.5665 } }, "covered_min": 0, "window_min": 223, "qualifies": false }, { "local_date": "1987-10-31", "window": { "start": { "local": "1987-10-31T07:02:08+08:00", "utc": "1987-10-30T23:02:08Z", "ms": 562633327628.3992 }, "end": { "local": "1987-10-31T10:44:38+08:00", "utc": "1987-10-31T02:44:38Z", "ms": 562646677690.224 } }, "covered_min": 179, "window_min": 223, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:06 on Fri 30 Oct to 10:01 on Sat 31 Oct.", "fact": "1987-10-30T04:06:26Z → 1987-10-31T02:00:47Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:01–10:44 on the 30th, 07:02–10:45 on the 31st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 223 minutes on the 30th and 179 of 223 on the 31st.", "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 2631 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Zunyi, 1987: Saturday 31 October.", "fact": "confidence: determinate" } ], "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": "1987-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-10-31", "confidence": "determinate" } ], "quote": "In Zunyi, Akṣaya Navamī (Amla Navami) 1987 falls on Saturday 31 October. Navamī runs from 12:06 on Fri 30 Oct to 10:01 on Sat 31 Oct and covers 179 of 223 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-11-01", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3414, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-11-01T07:59:42+08:00", "utc": "1987-10-31T23:59:42Z", "ms": 562723182116.476 }, "end": { "local": "1987-11-02T06:05:35+08:00", "utc": "1987-11-01T22:05:35Z", "ms": 562802734564.3806 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-11-01T07:59:42+08:00", "utc": "1987-10-31T23:59:42Z", "ms": 562723182116.476 }, "end": { "local": "1987-11-02T06:05:35+08:00", "utc": "1987-11-01T22:05:35Z", "ms": 562802734564.3806 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-11-01", "window": { "start": { "local": "1987-11-01T07:02:48+08:00", "utc": "1987-10-31T23:02:48Z", "ms": 562719768427.01 }, "end": { "local": "1987-11-01T07:02:48+08:00", "utc": "1987-10-31T23:02:48Z", "ms": 562719768427.01 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-11-02", "window": { "start": { "local": "1987-11-02T07:03:30+08:00", "utc": "1987-11-01T23:03:30Z", "ms": 562806209621.0056 }, "end": { "local": "1987-11-02T07:03:30+08:00", "utc": "1987-11-01T23:03:30Z", "ms": 562806209621.0056 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:00 on Sun 1 Nov to 06:06 on Mon 2 Nov.", "fact": "1987-10-31T23:59:42Z → 1987-11-01T22:05:35Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 1st and 07:03 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not 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": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 3414 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Zunyi, 1987: Sunday 1 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": "1987-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-01", "confidence": "determinate" } ], "quote": "In Zunyi, Prabodhinī Ekādaśī 1987 falls on Sunday 1 November. Ekādaśī runs from 08:00 on Sun 1 Nov to 06:06 on Mon 2 Nov, and is current at sunrise on neither day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-11-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-11-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25150, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-11-03T04:21:15+08:00", "utc": "1987-11-02T20:21:15Z", "ms": 562882874871.179 }, "end": { "local": "1987-11-04T02:50:15+08:00", "utc": "1987-11-03T18:50:15Z", "ms": 562963814509.2157 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-11-03T04:21:15+08:00", "utc": "1987-11-02T20:21:15Z", "ms": 562882874871.179 }, "end": { "local": "1987-11-04T02:50:15+08:00", "utc": "1987-11-03T18:50:15Z", "ms": 562963814509.2157 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-11-02", "window": { "start": { "local": "1987-11-02T18:08:08+08:00", "utc": "1987-11-02T10:08:08Z", "ms": 562846087682.6904 }, "end": { "local": "1987-11-02T19:51:36+08:00", "utc": "1987-11-02T11:51:36Z", "ms": 562852296152.6505 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "1987-11-03", "window": { "start": { "local": "1987-11-03T18:07:24+08:00", "utc": "1987-11-03T10:07:24Z", "ms": 562932444387.0232 }, "end": { "local": "1987-11-03T19:51:04+08:00", "utc": "1987-11-03T11:51:04Z", "ms": 562938664226.517 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:21 on Tue 3 Nov to 02:50 on Wed 4 Nov.", "fact": "1987-11-02T20:21:15Z → 1987-11-03T18:50:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:08–19:52 on the 2nd, 18:07–19:51 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 103 minutes on the 2nd and 104 of 104 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 25150 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Tuesday 3 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": "1987-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-03", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Tuesday 3 November. Trayodaśī runs from 04:21 on Tue 3 Nov to 02:50 on Wed 4 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-11-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38099, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-11-05T01:36:49+08:00", "utc": "1987-11-04T17:36:49Z", "ms": 563045809443.4553 }, "end": { "local": "1987-11-06T00:45:51+08:00", "utc": "1987-11-05T16:45:51Z", "ms": 563129150908.8535 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-11-05T01:36:49+08:00", "utc": "1987-11-04T17:36:49Z", "ms": 563045809443.4553 }, "end": { "local": "1987-11-06T00:45:51+08:00", "utc": "1987-11-05T16:45:51Z", "ms": 563129150908.8535 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-05", "window": { "start": { "local": "1987-11-05T12:11:49+08:00", "utc": "1987-11-05T04:11:49Z", "ms": 563083908508.2471 }, "end": { "local": "1987-11-05T12:59:49+08:00", "utc": "1987-11-05T04:59:49Z", "ms": 563086788508.2471 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-06", "window": { "start": { "local": "1987-11-06T12:11:50+08:00", "utc": "1987-11-06T04:11:50Z", "ms": 563170310096.9155 }, "end": { "local": "1987-11-06T12:59:50+08:00", "utc": "1987-11-06T04:59:50Z", "ms": 563173190096.9155 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:37 on Thu 5 Nov to 00:46 on Fri 6 Nov.", "fact": "1987-11-04T17:36:49Z → 1987-11-05T16:45:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 5th, 12:12–13:00 on the 6th.", "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 5th and 0 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: unstated → only-day · margin 38099 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Zunyi, 1987: Thursday 5 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": "1987-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-05", "confidence": "determinate" } ], "quote": "In Zunyi, Kārtikī Pūrṇimā 1987 falls on Thursday 5 November. Pūrṇimā runs from 01:37 on Thu 5 Nov to 00:46 on Fri 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 859, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-11-05T01:36:49+08:00", "utc": "1987-11-04T17:36:49Z", "ms": 563045809443.4553 }, "end": { "local": "1987-11-06T00:45:51+08:00", "utc": "1987-11-05T16:45:51Z", "ms": 563129150908.8535 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1987-11-05T01:36:49+08:00", "utc": "1987-11-04T17:36:49Z", "ms": 563045809443.4553 }, "end": { "local": "1987-11-06T00:45:51+08:00", "utc": "1987-11-05T16:45:51Z", "ms": 563129150908.8535 } }, "kaala": "nishita", "days": [ { "local_date": "1987-11-04", "window": { "start": { "local": "1987-11-05T00:12:09+08:00", "utc": "1987-11-04T16:12:09Z", "ms": 563040728926.3169 }, "end": { "local": "1987-11-05T01:00:09+08:00", "utc": "1987-11-04T17:00:09Z", "ms": 563043608926.3169 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-11-05", "window": { "start": { "local": "1987-11-06T00:12:10+08:00", "utc": "1987-11-05T16:12:10Z", "ms": 563127129879.9221 }, "end": { "local": "1987-11-06T01:00:10+08:00", "utc": "1987-11-05T17:00:10Z", "ms": 563130009879.9221 } }, "covered_min": 34, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:37 on Thu 5 Nov to 00:46 on Fri 6 Nov.", "fact": "1987-11-04T17:36:49Z → 1987-11-05T16:45:51Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:12–01:00 on the 4th, 00:12–01:00 on the 5th.", "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 4th and 34 of 48 on the 5th.", "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: paraviddha → only-day · margin 859 s" }, { "step": "ruling", "text": "Rāsayātrā, Zunyi, 1987: Thursday 5 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": "1987-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-05", "confidence": "determinate" } ], "quote": "In Zunyi, Rāsayātrā 1987 falls on Thursday 5 November. Pūrṇimā runs from 01:37 on Thu 5 Nov to 00:46 on Fri 6 Nov and covers 34 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-11-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19409, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-11-09T01:14:46+08:00", "utc": "1987-11-08T17:14:46Z", "ms": 563390086190.15 }, "end": { "local": "1987-11-10T02:34:35+08:00", "utc": "1987-11-09T18:34:35Z", "ms": 563481275393.6918 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-09T01:14:46+08:00", "utc": "1987-11-08T17:14:46Z", "ms": 563390086190.15 }, "end": { "local": "1987-11-10T02:34:35+08:00", "utc": "1987-11-09T18:34:35Z", "ms": 563481275393.6918 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-11-08", "window": { "start": { "local": "1987-11-08T19:51:18+08:00", "utc": "1987-11-08T11:51:18Z", "ms": 563370677602.0491 }, "end": { "local": "1987-11-08T19:51:18+08:00", "utc": "1987-11-08T11:51:18Z", "ms": 563370677602.0491 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-11-09", "window": { "start": { "local": "1987-11-09T20:43:48+08:00", "utc": "1987-11-09T12:43:48Z", "ms": 563460227846.1478 }, "end": { "local": "1987-11-09T20:43:48+08:00", "utc": "1987-11-09T12:43:48Z", "ms": 563460227846.1478 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:15 on Mon 9 Nov to 02:35 on Tue 10 Nov.", "fact": "1987-11-08T17:14:46Z → 1987-11-09T18:34:35Z" }, { "step": "kaala", "text": "Moonrise is at 19:51 on the 8th and 20:44 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 8th and is on the 9th.", "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 19409 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Monday 9 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": "1987-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-09", "confidence": "determinate" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Monday 9 November. Caturthī runs from 01:15 on Mon 9 Nov to 02:35 on Tue 10 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-11-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-11-17", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31718, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-11-16T16:02:23+08:00", "utc": "1987-11-16T08:02:23Z", "ms": 564048142869.4749 }, "end": { "local": "1987-11-17T17:12:20+08:00", "utc": "1987-11-17T09:12:20Z", "ms": 564138740356.2617 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-16T16:02:23+08:00", "utc": "1987-11-16T08:02:23Z", "ms": 564048142869.4749 }, "end": { "local": "1987-11-17T17:12:20+08:00", "utc": "1987-11-17T09:12:20Z", "ms": 564138740356.2617 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-11-16", "window": { "start": { "local": "1987-11-16T07:13:44+08:00", "utc": "1987-11-15T23:13:44Z", "ms": 564016424475.3662 }, "end": { "local": "1987-11-16T07:13:44+08:00", "utc": "1987-11-15T23:13:44Z", "ms": 564016424475.3662 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-11-17", "window": { "start": { "local": "1987-11-17T07:14:31+08:00", "utc": "1987-11-16T23:14:31Z", "ms": 564102870612.1161 }, "end": { "local": "1987-11-17T07:14:31+08:00", "utc": "1987-11-16T23:14:31Z", "ms": 564102870612.1161 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:02 on Mon 16 Nov to 17:12 on Tue 17 Nov.", "fact": "1987-11-16T08:02:23Z → 1987-11-17T09:12:20Z" }, { "step": "kaala", "text": "Sunrise is at 07:14 on the 16th and 07:15 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 31718 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Zunyi, 1987: Tuesday 17 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": "1987-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-17", "confidence": "determinate" } ], "quote": "In Zunyi, Utpannā Ekādaśī 1987 falls on Tuesday 17 November. Ekādaśī runs from 16:02 on Mon 16 Nov to 17:12 on Tue 17 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-11-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1322, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-11-18T17:37:13+08:00", "utc": "1987-11-18T09:37:13Z", "ms": 564226632873.7188 }, "end": { "local": "1987-11-19T17:16:15+08:00", "utc": "1987-11-19T09:16:15Z", "ms": 564311774717.8588 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-18T17:37:13+08:00", "utc": "1987-11-18T09:37:13Z", "ms": 564226632873.7188 }, "end": { "local": "1987-11-19T17:16:15+08:00", "utc": "1987-11-19T09:16:15Z", "ms": 564311774717.8588 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-11-18", "window": { "start": { "local": "1987-11-18T17:59:15+08:00", "utc": "1987-11-18T09:59:15Z", "ms": 564227955047.8083 }, "end": { "local": "1987-11-18T19:45:29+08:00", "utc": "1987-11-18T11:45:29Z", "ms": 564234329497.2673 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1987-11-19", "window": { "start": { "local": "1987-11-19T17:58:54+08:00", "utc": "1987-11-19T09:58:54Z", "ms": 564314334097.9243 }, "end": { "local": "1987-11-19T19:45:18+08:00", "utc": "1987-11-19T11:45:18Z", "ms": 564320717555.5189 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:37 on Wed 18 Nov to 17:16 on Thu 19 Nov.", "fact": "1987-11-18T09:37:13Z → 1987-11-19T09:16:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:45 on the 18th, 17:59–19:45 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 106 of 106 minutes on the 18th and 0 of 106 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 1322 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Wednesday 18 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": "1987-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-18", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Wednesday 18 November. Trayodaśī runs from 17:37 on Wed 18 Nov to 17:16 on Thu 19 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-11-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-11-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25057, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-11-19T17:16:15+08:00", "utc": "1987-11-19T09:16:15Z", "ms": 564311774717.8588 }, "end": { "local": "1987-11-20T16:12:43+08:00", "utc": "1987-11-20T08:12:43Z", "ms": 564394363428.1653 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-19T17:16:15+08:00", "utc": "1987-11-19T09:16:15Z", "ms": 564311774717.8588 }, "end": { "local": "1987-11-20T16:12:43+08:00", "utc": "1987-11-20T08:12:43Z", "ms": 564394363428.1653 } }, "kaala": "nishita", "days": [ { "local_date": "1987-11-19", "window": { "start": { "local": "1987-11-20T00:13:52+08:00", "utc": "1987-11-19T16:13:52Z", "ms": 564336832063.9042 }, "end": { "local": "1987-11-20T01:01:52+08:00", "utc": "1987-11-19T17:01:52Z", "ms": 564339712063.9042 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-20", "window": { "start": { "local": "1987-11-21T00:14:06+08:00", "utc": "1987-11-20T16:14:06Z", "ms": 564423245719.2625 }, "end": { "local": "1987-11-21T01:02:06+08:00", "utc": "1987-11-20T17:02:06Z", "ms": 564426125719.2625 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:16 on Thu 19 Nov to 16:13 on Fri 20 Nov.", "fact": "1987-11-19T09:16:15Z → 1987-11-20T08:12:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:14–01:02 on the 19th, 00:14–01:02 on the 20th.", "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 19th and 0 of 48 on the 20th.", "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 25057 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Thursday 19 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": "1987-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-19", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Thursday 19 November. Caturdaśī runs from 17:16 on Thu 19 Nov to 16:13 on Fri 20 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-11-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-11-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17704, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-11-24T07:19:41+08:00", "utc": "1987-11-23T23:19:41Z", "ms": 564707980902.67 }, "end": { "local": "1987-11-25T04:39:57+08:00", "utc": "1987-11-24T20:39:57Z", "ms": 564784796656.4237 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-24T07:19:41+08:00", "utc": "1987-11-23T23:19:41Z", "ms": 564707980902.67 }, "end": { "local": "1987-11-25T04:39:57+08:00", "utc": "1987-11-24T20:39:57Z", "ms": 564784796656.4237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-24", "window": { "start": { "local": "1987-11-24T12:14:45+08:00", "utc": "1987-11-24T04:14:45Z", "ms": 564725684944.1606 }, "end": { "local": "1987-11-24T13:02:45+08:00", "utc": "1987-11-24T05:02:45Z", "ms": 564728564944.1606 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-25", "window": { "start": { "local": "1987-11-25T12:15:03+08:00", "utc": "1987-11-25T04:15:03Z", "ms": 564812102547.1641 }, "end": { "local": "1987-11-25T13:03:03+08:00", "utc": "1987-11-25T05:03:03Z", "ms": 564814982547.1641 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:20 on Tue 24 Nov to 04:40 on Wed 25 Nov.", "fact": "1987-11-23T23:19:41Z → 1987-11-24T20:39:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 24th, 12:15–13:03 on the 25th.", "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 24th and 0 of 48 on the 25th.", "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 17704 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Tuesday 24 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": "1987-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-24", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Tuesday 24 November. Caturthī runs from 07:20 on Tue 24 Nov to 04:40 on Wed 25 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-11-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27306, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1987-11-25T04:39:57+08:00", "utc": "1987-11-24T20:39:57Z", "ms": 564784796656.4237 }, "end": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-25T04:39:57+08:00", "utc": "1987-11-24T20:39:57Z", "ms": 564784796656.4237 }, "end": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-25", "window": { "start": { "local": "1987-11-25T12:15:03+08:00", "utc": "1987-11-25T04:15:03Z", "ms": 564812102547.1641 }, "end": { "local": "1987-11-25T13:03:03+08:00", "utc": "1987-11-25T05:03:03Z", "ms": 564814982547.1641 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-26", "window": { "start": { "local": "1987-11-26T12:15:21+08:00", "utc": "1987-11-26T04:15:21Z", "ms": 564898520899.0137 }, "end": { "local": "1987-11-26T13:03:21+08:00", "utc": "1987-11-26T05:03:21Z", "ms": 564901400899.0137 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:40 on Wed 25 Nov to 02:06 on Thu 26 Nov.", "fact": "1987-11-24T20:39:57Z → 1987-11-25T18:05:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 25th, 12:15–13:03 on the 26th.", "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 25th and 0 of 48 on the 26th.", "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 27306 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Zunyi, 1987: Wednesday 25 November.", "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": "1987-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-25", "confidence": "determinate" } ], "quote": "In Zunyi, Nāga Pañcamī (Mārgaśīrṣa) 1987 falls on Wednesday 25 November. Pañcamī runs from 04:40 on Wed 25 Nov to 02:06 on Thu 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36590, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 }, "end": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 }, "end": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-26", "window": { "start": { "local": "1987-11-26T12:15:21+08:00", "utc": "1987-11-26T04:15:21Z", "ms": 564898520899.0137 }, "end": { "local": "1987-11-26T13:03:21+08:00", "utc": "1987-11-26T05:03:21Z", "ms": 564901400899.0137 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-27", "window": { "start": { "local": "1987-11-27T12:15:40+08:00", "utc": "1987-11-27T04:15:40Z", "ms": 564984939982.144 }, "end": { "local": "1987-11-27T13:03:40+08:00", "utc": "1987-11-27T05:03:40Z", "ms": 564987819982.144 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:06 on Thu 26 Nov to 23:42 on Thu 26 Nov.", "fact": "1987-11-25T18:05:31Z → 1987-11-26T15:42:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 26th, 12:16–13:04 on the 27th.", "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 26th and 0 of 48 on the 27th.", "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 36590 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Zunyi, 1987: Thursday 26 November.", "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": "1987-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-26", "confidence": "determinate" } ], "quote": "In Zunyi, Campā Ṣaṣṭhī 1987 falls on Thursday 26 November. Ṣaṣṭhī runs from 02:06 on Thu 26 Nov to 23:42 on Thu 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36590, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 }, "end": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-26T02:05:31+08:00", "utc": "1987-11-25T18:05:31Z", "ms": 564861931310.15 }, "end": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-26", "window": { "start": { "local": "1987-11-26T12:15:21+08:00", "utc": "1987-11-26T04:15:21Z", "ms": 564898520899.0137 }, "end": { "local": "1987-11-26T13:03:21+08:00", "utc": "1987-11-26T05:03:21Z", "ms": 564901400899.0137 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1987-11-27", "window": { "start": { "local": "1987-11-27T12:15:40+08:00", "utc": "1987-11-27T04:15:40Z", "ms": 564984939982.144 }, "end": { "local": "1987-11-27T13:03:40+08:00", "utc": "1987-11-27T05:03:40Z", "ms": 564987819982.144 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:06 on Thu 26 Nov to 23:42 on Thu 26 Nov.", "fact": "1987-11-25T18:05:31Z → 1987-11-26T15:42:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 26th, 12:16–13:04 on the 27th.", "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 26th and 0 of 48 on the 27th.", "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 36590 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Zunyi, 1987: Thursday 26 November.", "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": "1987-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-26", "confidence": "determinate" } ], "quote": "In Zunyi, Skanda Ṣaṣṭhī 1987 falls on Thursday 26 November. Ṣaṣṭhī runs from 02:06 on Thu 26 Nov to 23:42 on Thu 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-11-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30642, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 }, "end": { "local": "1987-11-27T21:34:22+08:00", "utc": "1987-11-27T13:34:22Z", "ms": 565018461548.6506 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-26T23:42:16+08:00", "utc": "1987-11-26T15:42:16Z", "ms": 564939735833.2882 }, "end": { "local": "1987-11-27T21:34:22+08:00", "utc": "1987-11-27T13:34:22Z", "ms": 565018461548.6506 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-11-26", "window": { "start": { "local": "1987-11-26T12:15:21+08:00", "utc": "1987-11-26T04:15:21Z", "ms": 564898520899.0137 }, "end": { "local": "1987-11-26T13:03:21+08:00", "utc": "1987-11-26T05:03:21Z", "ms": 564901400899.0137 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-11-27", "window": { "start": { "local": "1987-11-27T12:15:40+08:00", "utc": "1987-11-27T04:15:40Z", "ms": 564984939982.144 }, "end": { "local": "1987-11-27T13:03:40+08:00", "utc": "1987-11-27T05:03:40Z", "ms": 564987819982.144 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 23:42 on Thu 26 Nov to 21:34 on Fri 27 Nov.", "fact": "1987-11-26T15:42:16Z → 1987-11-27T13:34:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 26th, 12:16–13:04 on the 27th.", "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 26th and 48 of 48 on the 27th.", "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 30642 s" }, { "step": "ruling", "text": "Mitra Saptamī, Zunyi, 1987: Friday 27 November.", "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": "1987-11-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-11-27", "confidence": "determinate" } ], "quote": "In Zunyi, Mitra Saptamī 1987 falls on Friday 27 November. Saptamī runs from 23:42 on Thu 26 Nov to 21:34 on Fri 27 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/ekadashi?on=1987-12-01", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31385, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-11-30T17:01:22+08:00", "utc": "1987-11-30T09:01:22Z", "ms": 565261282376.6292 }, "end": { "local": "1987-12-01T16:08:26+08:00", "utc": "1987-12-01T08:08:26Z", "ms": 565344506361.4615 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-11-30T17:01:22+08:00", "utc": "1987-11-30T09:01:22Z", "ms": 565261282376.6292 }, "end": { "local": "1987-12-01T16:08:26+08:00", "utc": "1987-12-01T08:08:26Z", "ms": 565344506361.4615 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-11-30", "window": { "start": { "local": "1987-11-30T07:24:35+08:00", "utc": "1987-11-29T23:24:35Z", "ms": 565226675333.0498 }, "end": { "local": "1987-11-30T07:24:35+08:00", "utc": "1987-11-29T23:24:35Z", "ms": 565226675333.0498 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-12-01", "window": { "start": { "local": "1987-12-01T07:25:21+08:00", "utc": "1987-11-30T23:25:21Z", "ms": 565313120955.7042 }, "end": { "local": "1987-12-01T07:25:21+08:00", "utc": "1987-11-30T23:25:21Z", "ms": 565313120955.7042 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:01 on Mon 30 Nov to 16:08 on Tue 1 Dec.", "fact": "1987-11-30T09:01:22Z → 1987-12-01T08:08:26Z" }, { "step": "kaala", "text": "Sunrise is at 07:25 on the 30th and 07:25 on the 1st.", "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 1st.", "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 31385 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Zunyi, 1987: Tuesday 1 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": "1987-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-01", "confidence": "determinate" } ], "quote": "In Zunyi, Mokṣadā Ekādaśī 1987 falls on Tuesday 1 December. Ekādaśī runs from 17:01 on Mon 30 Nov to 16:08 on Tue 1 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-12-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8952, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1987-12-01T16:08:26+08:00", "utc": "1987-12-01T08:08:26Z", "ms": 565344506361.4615 }, "end": { "local": "1987-12-02T15:34:37+08:00", "utc": "1987-12-02T07:34:37Z", "ms": 565428877317.9067 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-01T16:08:26+08:00", "utc": "1987-12-01T08:08:26Z", "ms": 565344506361.4615 }, "end": { "local": "1987-12-02T15:34:37+08:00", "utc": "1987-12-02T07:34:37Z", "ms": 565428877317.9067 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-12-01", "window": { "start": { "local": "1987-12-01T12:17:03+08:00", "utc": "1987-12-01T04:17:03Z", "ms": 565330623282.8057 }, "end": { "local": "1987-12-01T13:05:03+08:00", "utc": "1987-12-01T05:05:03Z", "ms": 565333503282.8057 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-12-02", "window": { "start": { "local": "1987-12-02T12:17:26+08:00", "utc": "1987-12-02T04:17:26Z", "ms": 565417045764.127 }, "end": { "local": "1987-12-02T13:05:26+08:00", "utc": "1987-12-02T05:05:26Z", "ms": 565419925764.127 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:08 on Tue 1 Dec to 15:35 on Wed 2 Dec.", "fact": "1987-12-01T08:08:26Z → 1987-12-02T07:34:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 1st, 12:17–13:05 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "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 8952 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Zunyi, 1987: Wednesday 2 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": "1987-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-02", "confidence": "determinate" } ], "quote": "In Zunyi, Akhaṇḍa Dvādaśī 1987 falls on Wednesday 2 December. Dvādaśī runs from 16:08 on Tue 1 Dec to 15:35 on Wed 2 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/pradosha-vrata?on=1987-12-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8528, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-12-02T15:34:37+08:00", "utc": "1987-12-02T07:34:37Z", "ms": 565428877317.9067 }, "end": { "local": "1987-12-03T15:20:49+08:00", "utc": "1987-12-03T07:20:49Z", "ms": 565514448550.9325 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-02T15:34:37+08:00", "utc": "1987-12-02T07:34:37Z", "ms": 565428877317.9067 }, "end": { "local": "1987-12-03T15:20:49+08:00", "utc": "1987-12-03T07:20:49Z", "ms": 565514448550.9325 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-12-02", "window": { "start": { "local": "1987-12-02T17:56:45+08:00", "utc": "1987-12-02T09:56:45Z", "ms": 565437405260.6205 }, "end": { "local": "1987-12-02T19:44:46+08:00", "utc": "1987-12-02T11:44:46Z", "ms": 565443886057.0631 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1987-12-03", "window": { "start": { "local": "1987-12-03T17:56:47+08:00", "utc": "1987-12-03T09:56:47Z", "ms": 565523806511.7728 }, "end": { "local": "1987-12-03T19:44:53+08:00", "utc": "1987-12-03T11:44:53Z", "ms": 565530293086.1168 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:35 on Wed 2 Dec to 15:21 on Thu 3 Dec.", "fact": "1987-12-02T07:34:37Z → 1987-12-03T07:20:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:45 on the 2nd, 17:57–19:45 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 108 of 108 minutes on the 2nd and 0 of 108 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 8528 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Zunyi, 1987: Wednesday 2 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": "1987-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-02", "confidence": "determinate" } ], "quote": "In Zunyi, Śukla Pradoṣa Vrata 1987 falls on Wednesday 2 December. Trayodaśī runs from 15:35 on Wed 2 Dec to 15:21 on Thu 3 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-12-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6954, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1987-12-04T15:28:47+08:00", "utc": "1987-12-04T07:28:47Z", "ms": 565601327054.9441 }, "end": { "local": "1987-12-05T16:01:00+08:00", "utc": "1987-12-05T08:01:00Z", "ms": 565689659975.3883 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-04T15:28:47+08:00", "utc": "1987-12-04T07:28:47Z", "ms": 565601327054.9441 }, "end": { "local": "1987-12-05T16:01:00+08:00", "utc": "1987-12-05T08:01:00Z", "ms": 565689659975.3883 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-12-04", "window": { "start": { "local": "1987-12-04T17:56:49+08:00", "utc": "1987-12-04T09:56:49Z", "ms": 565610209361.594 }, "end": { "local": "1987-12-04T19:45:01+08:00", "utc": "1987-12-04T11:45:01Z", "ms": 565616701445.1294 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1987-12-05", "window": { "start": { "local": "1987-12-05T17:56:54+08:00", "utc": "1987-12-05T09:56:54Z", "ms": 565696613807.0831 }, "end": { "local": "1987-12-05T19:45:11+08:00", "utc": "1987-12-05T11:45:11Z", "ms": 565703111126.6427 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:29 on Fri 4 Dec to 16:01 on Sat 5 Dec.", "fact": "1987-12-04T07:28:47Z → 1987-12-05T08:01:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:45 on the 4th, 17:57–19:45 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 108 of 108 minutes on the 4th and 0 of 108 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 6954 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Zunyi, 1987: Friday 4 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": "1987-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-04", "confidence": "determinate" } ], "quote": "In Zunyi, Dattātreyotpatti (Datta Jayanti) 1987 falls on Friday 4 December. Pūrṇimā runs from 15:29 on Fri 4 Dec to 16:01 on Sat 5 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/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": "/zunyi/festivals/1987/sankashta-chaturthi?on=1987-12-08", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-08", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 165, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-12-08T20:22:44+08:00", "utc": "1987-12-08T12:22:44Z", "ms": 565964563864.8794 }, "end": { "local": "1987-12-09T22:42:32+08:00", "utc": "1987-12-09T14:42:32Z", "ms": 566059352431.3798 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-08T20:22:44+08:00", "utc": "1987-12-08T12:22:44Z", "ms": 565964563864.8794 }, "end": { "local": "1987-12-09T22:42:32+08:00", "utc": "1987-12-09T14:42:32Z", "ms": 566059352431.3798 } }, "kaala": "moonrise", "days": [ { "local_date": "1987-12-08", "window": { "start": { "local": "1987-12-08T20:25:29+08:00", "utc": "1987-12-08T12:25:29Z", "ms": 565964728744.647 }, "end": { "local": "1987-12-08T20:25:29+08:00", "utc": "1987-12-08T12:25:29Z", "ms": 565964728744.647 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-12-09", "window": { "start": { "local": "1987-12-09T21:22:17+08:00", "utc": "1987-12-09T13:22:17Z", "ms": 566054536830.0873 }, "end": { "local": "1987-12-09T21:22:17+08:00", "utc": "1987-12-09T13:22:17Z", "ms": 566054536830.0873 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:23 on Tue 8 Dec to 22:43 on Wed 9 Dec.", "fact": "1987-12-08T12:22:44Z → 1987-12-09T14:42:32Z" }, { "step": "kaala", "text": "Moonrise is at 20:25 on the 8th and 21:22 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both moonrises qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 165 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Zunyi, 1987: Tuesday 8 December.", "fact": "confidence: boundary (margin, tie-break-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": "1987-12-08", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-08", "confidence": "boundary" } ], "quote": "In Zunyi, Saṅkaṣṭa Caturthī 1987 falls on Tuesday 8 December. Caturthī runs from 20:23 on Tue 8 Dec to 22:43 on Wed 9 Dec and is current at moonrise that day. It is 2 min 45 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/zunyi/festivals/1987/sankashta-chaturthi?on=1987-12-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-12-17", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11064, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-12-16T10:51:43+08:00", "utc": "1987-12-16T02:51:43Z", "ms": 566621503438.8876 }, "end": { "local": "1987-12-17T10:40:48+08:00", "utc": "1987-12-17T02:40:48Z", "ms": 566707247990.2317 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-16T10:51:43+08:00", "utc": "1987-12-16T02:51:43Z", "ms": 566621503438.8876 }, "end": { "local": "1987-12-17T10:40:48+08:00", "utc": "1987-12-17T02:40:48Z", "ms": 566707247990.2317 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-12-16", "window": { "start": { "local": "1987-12-16T07:35:47+08:00", "utc": "1987-12-15T23:35:47Z", "ms": 566609747417.0215 }, "end": { "local": "1987-12-16T07:35:47+08:00", "utc": "1987-12-15T23:35:47Z", "ms": 566609747417.0215 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1987-12-17", "window": { "start": { "local": "1987-12-17T07:36:24+08:00", "utc": "1987-12-16T23:36:24Z", "ms": 566696183555.3324 }, "end": { "local": "1987-12-17T07:36:24+08:00", "utc": "1987-12-16T23:36:24Z", "ms": 566696183555.3324 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:52 on Wed 16 Dec to 10:41 on Thu 17 Dec.", "fact": "1987-12-16T02:51:43Z → 1987-12-17T02:40:48Z" }, { "step": "kaala", "text": "Sunrise is at 07:36 on the 16th and 07:36 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 11064 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Zunyi, 1987: Thursday 17 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": "1987-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-17", "confidence": "determinate" } ], "quote": "In Zunyi, Saphalā Ekādaśī 1987 falls on Thursday 17 December. Ekādaśī runs from 10:52 on Wed 16 Dec to 10:41 on Thu 17 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/pradosha-vrata?on=1987-12-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30115, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1987-12-18T09:38:17+08:00", "utc": "1987-12-18T01:38:17Z", "ms": 566789897228.9368 }, "end": { "local": "1987-12-19T07:49:11+08:00", "utc": "1987-12-18T23:49:11Z", "ms": 566869750657.5894 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-18T09:38:17+08:00", "utc": "1987-12-18T01:38:17Z", "ms": 566789897228.9368 }, "end": { "local": "1987-12-19T07:49:11+08:00", "utc": "1987-12-18T23:49:11Z", "ms": 566869750657.5894 } }, "kaala": "pradosha", "days": [ { "local_date": "1987-12-18", "window": { "start": { "local": "1987-12-18T18:00:12+08:00", "utc": "1987-12-18T10:00:12Z", "ms": 566820012467.2543 }, "end": { "local": "1987-12-18T19:49:11+08:00", "utc": "1987-12-18T11:49:11Z", "ms": 566826551202.8413 } }, "covered_min": 109, "window_min": 109, "qualifies": true }, { "local_date": "1987-12-19", "window": { "start": { "local": "1987-12-19T18:00:38+08:00", "utc": "1987-12-19T10:00:38Z", "ms": 566906437977.4994 }, "end": { "local": "1987-12-19T19:49:38+08:00", "utc": "1987-12-19T11:49:38Z", "ms": 566912977739.1439 } }, "covered_min": 0, "window_min": 109, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:38 on Fri 18 Dec to 07:49 on Sat 19 Dec.", "fact": "1987-12-18T01:38:17Z → 1987-12-18T23:49:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:49 on the 18th, 18:01–19:50 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 109 of 109 minutes on the 18th and 0 of 109 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 30115 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Zunyi, 1987: Friday 18 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": "1987-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-18", "confidence": "determinate" } ], "quote": "In Zunyi, Kṛṣṇa Pradoṣa Vrata 1987 falls on Friday 18 December. Trayodaśī runs from 09:38 on Fri 18 Dec to 07:49 on Sat 19 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/zunyi/festivals/1987/pradosha-vrata?on=1987-12-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/shivaratri?on=1987-12-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14890, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1987-12-19T07:49:11+08:00", "utc": "1987-12-18T23:49:11Z", "ms": 566869750657.5894 }, "end": { "local": "1987-12-20T05:21:32+08:00", "utc": "1987-12-19T21:21:32Z", "ms": 566947291638.6775 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-19T07:49:11+08:00", "utc": "1987-12-18T23:49:11Z", "ms": 566869750657.5894 }, "end": { "local": "1987-12-20T05:21:32+08:00", "utc": "1987-12-19T21:21:32Z", "ms": 566947291638.6775 } }, "kaala": "nishita", "days": [ { "local_date": "1987-12-18", "window": { "start": { "local": "1987-12-19T00:24:53+08:00", "utc": "1987-12-18T16:24:53Z", "ms": 566843092725.7058 }, "end": { "local": "1987-12-19T01:12:53+08:00", "utc": "1987-12-18T17:12:53Z", "ms": 566845972725.7058 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-12-19", "window": { "start": { "local": "1987-12-20T00:25:22+08:00", "utc": "1987-12-19T16:25:22Z", "ms": 566929522083.6663 }, "end": { "local": "1987-12-20T01:13:22+08:00", "utc": "1987-12-19T17:13:22Z", "ms": 566932402083.6663 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:49 on Sat 19 Dec to 05:22 on Sun 20 Dec.", "fact": "1987-12-18T23:49:11Z → 1987-12-19T21:21:32Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:25–01:13 on the 18th, 00:25–01:13 on the 19th.", "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 18th and 48 of 48 on the 19th.", "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 14890 s" }, { "step": "ruling", "text": "Śivarātri, Zunyi, 1987: Saturday 19 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": "1987-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-19", "confidence": "determinate" } ], "quote": "In Zunyi, Śivarātri 1987 falls on Saturday 19 December. Caturdaśī runs from 07:49 on Sat 19 Dec to 05:22 on Sun 20 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/zunyi/festivals/1987/shivaratri?on=1987-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-12-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 776, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1987-12-23T16:32:57+08:00", "utc": "1987-12-23T08:32:57Z", "ms": 567246777474.1871 }, "end": { "local": "1987-12-24T13:28:32+08:00", "utc": "1987-12-24T05:28:32Z", "ms": 567322111980.1825 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-23T16:32:57+08:00", "utc": "1987-12-23T08:32:57Z", "ms": 567246777474.1871 }, "end": { "local": "1987-12-24T13:28:32+08:00", "utc": "1987-12-24T05:28:32Z", "ms": 567322111980.1825 } }, "kaala": "madhyahna", "days": [ { "local_date": "1987-12-23", "window": { "start": { "local": "1987-12-23T12:27:06+08:00", "utc": "1987-12-23T04:27:06Z", "ms": 567232026093.1233 }, "end": { "local": "1987-12-23T13:15:06+08:00", "utc": "1987-12-23T05:15:06Z", "ms": 567234906093.1233 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1987-12-24", "window": { "start": { "local": "1987-12-24T12:27:36+08:00", "utc": "1987-12-24T04:27:36Z", "ms": 567318456328.8616 }, "end": { "local": "1987-12-24T13:15:36+08:00", "utc": "1987-12-24T05:15:36Z", "ms": 567321336328.8616 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:33 on Wed 23 Dec to 13:29 on Thu 24 Dec.", "fact": "1987-12-23T08:32:57Z → 1987-12-24T05:28:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 23rd, 12:28–13:16 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "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 776 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Zunyi, 1987: Thursday 24 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": "1987-12-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-24", "confidence": "determinate" } ], "quote": "In Zunyi, Vināyaka Caturthī 1987 falls on Thursday 24 December. Caturthī runs from 16:33 on Wed 23 Dec to 13:29 on Thu 24 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/zunyi/festivals/1987/vinayaka-chaturthi?on=1987-12-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/zunyi/festivals/1987/ekadashi?on=1987-12-30", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1783621", "year": 1987, "local_date": "1987-12-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10544, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1987-12-30T04:32:31+08:00", "utc": "1987-12-29T20:32:31Z", "ms": 567808350997.0605 }, "end": { "local": "1987-12-31T04:47:09+08:00", "utc": "1987-12-30T20:47:09Z", "ms": 567895629069.5381 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1987-12-30T04:32:31+08:00", "utc": "1987-12-29T20:32:31Z", "ms": 567808350997.0605 }, "end": { "local": "1987-12-31T04:47:09+08:00", "utc": "1987-12-30T20:47:09Z", "ms": 567895629069.5381 } }, "kaala": "sunrise", "days": [ { "local_date": "1987-12-30", "window": { "start": { "local": "1987-12-30T07:42:33+08:00", "utc": "1987-12-29T23:42:33Z", "ms": 567819753239.2406 }, "end": { "local": "1987-12-30T07:42:33+08:00", "utc": "1987-12-29T23:42:33Z", "ms": 567819753239.2406 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1987-12-31", "window": { "start": { "local": "1987-12-31T07:42:53+08:00", "utc": "1987-12-30T23:42:53Z", "ms": 567906172701.6016 }, "end": { "local": "1987-12-31T07:42:53+08:00", "utc": "1987-12-30T23:42:53Z", "ms": 567906172701.6016 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:33 on Wed 30 Dec to 04:47 on Thu 31 Dec.", "fact": "1987-12-29T20:32:31Z → 1987-12-30T20:47:09Z" }, { "step": "kaala", "text": "Sunrise is at 07:43 on the 30th and 07:43 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not 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 10544 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Zunyi, 1987: Wednesday 30 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": "1987-12-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1987-12-30", "confidence": "determinate" } ], "quote": "In Zunyi, Putradā Ekādaśī 1987 falls on Wednesday 30 December. Ekādaśī runs from 04:33 on Wed 30 Dec to 04:47 on Thu 31 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/zunyi/festivals/1987/ekadashi?on=1987-12-30", "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" } }