{ "id": "/soweto/festivals/1985", "place": { "id": "953781", "slug": "soweto", "name": "Soweto", "region": "Gauteng, South Africa", "country": "ZA", "lat": -26.26781, "lon": 27.85849, "elevation_m": 1632, "tz": "Africa/Johannesburg" }, "year": 1985, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/soweto/festivals/1985/ekadashi?on=1985-01-02", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6476, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-01-02T01:42:49+02:00", "utc": "1985-01-01T23:42:49Z", "ms": 473470968900.0295 }, "end": { "local": "1985-01-03T03:33:11+02:00", "utc": "1985-01-03T01:33:11Z", "ms": 473563991055.07904 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-01-02T01:42:49+02:00", "utc": "1985-01-01T23:42:49Z", "ms": 473470968900.0295 }, "end": { "local": "1985-01-03T03:33:11+02:00", "utc": "1985-01-03T01:33:11Z", "ms": 473563991055.07904 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-01-02", "window": { "start": { "local": "1985-01-02T05:20:26+02:00", "utc": "1985-01-02T03:20:26Z", "ms": 473484025812.64886 }, "end": { "local": "1985-01-02T05:20:26+02:00", "utc": "1985-01-02T03:20:26Z", "ms": 473484025812.64886 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-01-03", "window": { "start": { "local": "1985-01-03T05:21:07+02:00", "utc": "1985-01-03T03:21:07Z", "ms": 473570467135.2059 }, "end": { "local": "1985-01-03T05:21:07+02:00", "utc": "1985-01-03T03:21:07Z", "ms": 473570467135.2059 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:43 on Wed 2 Jan to 03:33 on Thu 3 Jan.", "fact": "1985-01-01T23:42:49Z → 1985-01-03T01:33:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 2nd and 05:21 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6476 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Soweto, 1985: Wednesday 2 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": "1985-01-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-02", "confidence": "determinate" } ], "quote": "In Soweto, Putradā Ekādaśī 1985 falls on Wednesday 2 January. Ekādaśī runs from 01:43 on Wed 2 Jan to 03:33 on Thu 3 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-01-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-01-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29900, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-01-04T04:45:32+02:00", "utc": "1985-01-04T02:45:32Z", "ms": 473654732192.01996 }, "end": { "local": "1985-01-05T05:15:57+02:00", "utc": "1985-01-05T03:15:57Z", "ms": 473742957476.60645 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-01-04T04:45:32+02:00", "utc": "1985-01-04T02:45:32Z", "ms": 473654732192.01996 }, "end": { "local": "1985-01-05T05:15:57+02:00", "utc": "1985-01-05T03:15:57Z", "ms": 473742957476.60645 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-01-03", "window": { "start": { "local": "1985-01-03T19:04:57+02:00", "utc": "1985-01-03T17:04:57Z", "ms": 473619896914.1925 }, "end": { "local": "1985-01-03T20:27:12+02:00", "utc": "1985-01-03T18:27:12Z", "ms": 473624831877.56995 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "1985-01-04", "window": { "start": { "local": "1985-01-04T19:05:09+02:00", "utc": "1985-01-04T17:05:09Z", "ms": 473706308973.4455 }, "end": { "local": "1985-01-04T20:27:28+02:00", "utc": "1985-01-04T18:27:28Z", "ms": 473711248015.0624 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:46 on Fri 4 Jan to 05:16 on Sat 5 Jan.", "fact": "1985-01-04T02:45:32Z → 1985-01-05T03:15:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:27 on the 3rd, 19:05–20:27 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 3rd and 82 of 82 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29900 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Friday 4 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": "1985-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-04", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Friday 4 January. Trayodaśī runs from 04:46 on Fri 4 Jan to 05:16 on Sat 5 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-01-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-09", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3999, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-01-09T23:09:55+02:00", "utc": "1985-01-09T21:09:55Z", "ms": 474152994853.462 }, "end": { "local": "1985-01-10T20:59:09+02:00", "utc": "1985-01-10T18:59:09Z", "ms": 474231548531.6069 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-09T23:09:55+02:00", "utc": "1985-01-09T21:09:55Z", "ms": 474152994853.462 }, "end": { "local": "1985-01-10T20:59:09+02:00", "utc": "1985-01-10T18:59:09Z", "ms": 474231548531.6069 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-01-09", "window": { "start": { "local": "1985-01-09T21:25:24+02:00", "utc": "1985-01-09T19:25:24Z", "ms": 474146723840.479 }, "end": { "local": "1985-01-09T21:25:24+02:00", "utc": "1985-01-09T19:25:24Z", "ms": 474146723840.479 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-01-10", "window": { "start": { "local": "1985-01-10T22:05:48+02:00", "utc": "1985-01-10T20:05:48Z", "ms": 474235547903.83997 }, "end": { "local": "1985-01-10T22:05:48+02:00", "utc": "1985-01-10T20:05:48Z", "ms": 474235547903.83997 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:10 on Wed 9 Jan to 20:59 on Thu 10 Jan.", "fact": "1985-01-09T21:09:55Z → 1985-01-10T18:59:09Z" }, { "step": "kaala", "text": "Moonrise is at 21:25 on the 9th and 22:06 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 9th and is not on the 10th.", "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 3999 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Wednesday 9 January.", "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": "1985-01-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-09", "confidence": "boundary" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Wednesday 9 January. Caturthī runs from 23:10 on Wed 9 Jan to 20:59 on Thu 10 Jan, and is current at moonrise on neither day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-01-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14811, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-02-12T12:08:58+02:00", "utc": "1985-02-12T10:08:58Z", "ms": 477050938442.20483 } }, "span": { "of": "transit", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 } }, "kaala": "sunset-day", "days": [ { "local_date": "1985-01-13", "window": { "start": { "local": "1985-01-12T19:05:51+02:00", "utc": "1985-01-12T17:05:51Z", "ms": 474397551484.2078 }, "end": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1985-01-14", "window": { "start": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 }, "end": { "local": "1985-01-14T19:05:47+02:00", "utc": "1985-01-14T17:05:47Z", "ms": 474570346948.6606 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1985-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:13 on Sun 13 Jan.", "fact": "1985-01-13T21:12:41Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 19:06, and the day of the 14th ends at 19:06.", "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 14811 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Monday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Soweto, 1985: Sunday 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": "1985-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1985-01-12", "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": "1985-01-12", "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 Soweto, Bhogi 1985 falls on Sunday 13 January. It is kept the day before Pongal, which falls on Monday 14 January. The Sun enters Makara at 23:13 on Sun 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from midnight, or counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2839, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-02-12T12:08:58+02:00", "utc": "1985-02-12T10:08:58Z", "ms": 477050938442.20483 } }, "span": { "of": "transit", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 } }, "kaala": "civil-day", "days": [ { "local_date": "1985-01-13", "window": { "start": { "local": "1985-01-13T00:00:00+02:00", "utc": "1985-01-12T22:00:00Z", "ms": 474415200000 }, "end": { "local": "1985-01-14T00:00:00+02:00", "utc": "1985-01-13T22:00:00Z", "ms": 474501600000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1985-01-14", "window": { "start": { "local": "1985-01-14T00:00:00+02:00", "utc": "1985-01-13T22:00:00Z", "ms": 474501600000 }, "end": { "local": "1985-01-15T00:00:00+02:00", "utc": "1985-01-14T22:00:00Z", "ms": 474588000000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:13 on Sun 13 Jan.", "fact": "1985-01-13T21:12:41Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Soweto.", "fact": "civil-day: midnight-to-midnight · Africa/Johannesburg" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 13th, not 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 midnight → only-day · margin 2839 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Soweto, 1985: Sunday 13 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": "1985-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1985-01-13", "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." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1985-01-14", "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 Soweto, Makara Saṅkrānti 1985 falls on Sunday 13 January. The Sun enters Makara at 23:13 on Sun 13 Jan, and the rule counts the day from midnight. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 January.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14811, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-02-12T12:08:58+02:00", "utc": "1985-02-12T10:08:58Z", "ms": 477050938442.20483 } }, "span": { "of": "transit", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 } }, "kaala": "sunset-day", "days": [ { "local_date": "1985-01-13", "window": { "start": { "local": "1985-01-12T19:05:51+02:00", "utc": "1985-01-12T17:05:51Z", "ms": 474397551484.2078 }, "end": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1985-01-14", "window": { "start": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 }, "end": { "local": "1985-01-14T19:05:47+02:00", "utc": "1985-01-14T17:05:47Z", "ms": 474570346948.6606 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:13 on Sun 13 Jan.", "fact": "1985-01-13T21:12:41Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 19:06, and the day of the 14th ends at 19:06.", "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 14811 s" }, { "step": "ruling", "text": "Pongal, Soweto, 1985: Monday 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": "1985-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1985-01-13", "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": "1985-01-13", "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 Soweto, Pongal 1985 falls on Monday 14 January. The Sun enters Makara at 23:13 on Sun 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from midnight, or counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14811, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-02-12T12:08:58+02:00", "utc": "1985-02-12T10:08:58Z", "ms": 477050938442.20483 } }, "span": { "of": "transit", "start": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 }, "end": { "local": "1985-01-13T23:12:41+02:00", "utc": "1985-01-13T21:12:41Z", "ms": 474498760993.7092 } }, "kaala": "sunset-day", "days": [ { "local_date": "1985-01-13", "window": { "start": { "local": "1985-01-12T19:05:51+02:00", "utc": "1985-01-12T17:05:51Z", "ms": 474397551484.2078 }, "end": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1985-01-14", "window": { "start": { "local": "1985-01-13T19:05:50+02:00", "utc": "1985-01-13T17:05:50Z", "ms": 474483949978.2915 }, "end": { "local": "1985-01-14T19:05:47+02:00", "utc": "1985-01-14T17:05:47Z", "ms": 474570346948.6606 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1985-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:13 on Sun 13 Jan.", "fact": "1985-01-13T21:12:41Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 19:06, and the day of the 14th ends at 19:06.", "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 14811 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Monday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Soweto, 1985: Tuesday 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": "1985-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1985-01-14", "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": "1985-01-14", "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 Soweto, Mattu Pongal 1985 falls on Tuesday 15 January. It is kept the day after Pongal, which falls on Monday 14 January. The Sun enters Makara at 23:13 on Sun 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from midnight, or counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-01-17", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7403, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-01-16T09:01:49+02:00", "utc": "1985-01-16T07:01:49Z", "ms": 474706909476.5057 }, "end": { "local": "1985-01-17T07:35:02+02:00", "utc": "1985-01-17T05:35:02Z", "ms": 474788102374.2561 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-16T09:01:49+02:00", "utc": "1985-01-16T07:01:49Z", "ms": 474706909476.5057 }, "end": { "local": "1985-01-17T07:35:02+02:00", "utc": "1985-01-17T05:35:02Z", "ms": 474788102374.2561 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-01-16", "window": { "start": { "local": "1985-01-16T05:30:52+02:00", "utc": "1985-01-16T03:30:52Z", "ms": 474694252452.00867 }, "end": { "local": "1985-01-16T05:30:52+02:00", "utc": "1985-01-16T03:30:52Z", "ms": 474694252452.00867 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-01-17", "window": { "start": { "local": "1985-01-17T05:31:40+02:00", "utc": "1985-01-17T03:31:40Z", "ms": 474780699871.3519 }, "end": { "local": "1985-01-17T05:31:40+02:00", "utc": "1985-01-17T03:31:40Z", "ms": 474780699871.3519 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:02 on Wed 16 Jan to 07:35 on Thu 17 Jan.", "fact": "1985-01-16T07:01:49Z → 1985-01-17T05:35:02Z" }, { "step": "kaala", "text": "Sunrise is at 05:31 on the 16th and 05:32 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 7403 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Soweto, 1985: Thursday 17 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": "1985-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-17", "confidence": "determinate" } ], "quote": "In Soweto, Ṣaṭtilā Ekādaśī 1985 falls on Thursday 17 January. Ekādaśī runs from 09:02 on Wed 16 Jan to 07:35 on Thu 17 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-01-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-01-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32041, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-01-18T06:21:17+02:00", "utc": "1985-01-18T04:21:17Z", "ms": 474870076820.99615 }, "end": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-18T06:21:17+02:00", "utc": "1985-01-18T04:21:17Z", "ms": 474870076820.99615 }, "end": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-01-17", "window": { "start": { "local": "1985-01-17T19:05:29+02:00", "utc": "1985-01-17T17:05:29Z", "ms": 474829528713.3614 }, "end": { "local": "1985-01-17T20:29:05+02:00", "utc": "1985-01-17T18:29:05Z", "ms": 474834544543.6317 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "1985-01-18", "window": { "start": { "local": "1985-01-18T19:05:20+02:00", "utc": "1985-01-18T17:05:20Z", "ms": 474915919586.8178 }, "end": { "local": "1985-01-18T20:29:03+02:00", "utc": "1985-01-18T18:29:03Z", "ms": 474920942991.0849 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:21 on Fri 18 Jan to 05:23 on Sat 19 Jan.", "fact": "1985-01-18T04:21:17Z → 1985-01-19T03:23:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:29 on the 17th, 19:05–20:29 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 84 minutes on the 17th and 84 of 84 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32041 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Friday 18 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": "1985-01-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-18", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Friday 18 January. Trayodaśī runs from 06:21 on Fri 18 Jan to 05:23 on Sat 19 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-01-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-01-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14421, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 }, "end": { "local": "1985-01-20T04:43:57+02:00", "utc": "1985-01-20T02:43:57Z", "ms": 475037037161.3061 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 }, "end": { "local": "1985-01-20T04:43:57+02:00", "utc": "1985-01-20T02:43:57Z", "ms": 475037037161.3061 } }, "kaala": "nishita", "days": [ { "local_date": "1985-01-18", "window": { "start": { "local": "1985-01-18T23:55:17+02:00", "utc": "1985-01-18T21:55:17Z", "ms": 474933317352.81946 }, "end": { "local": "1985-01-19T00:43:17+02:00", "utc": "1985-01-18T22:43:17Z", "ms": 474936197352.81946 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-01-19", "window": { "start": { "local": "1985-01-19T23:55:36+02:00", "utc": "1985-01-19T21:55:36Z", "ms": 475019735902.44244 }, "end": { "local": "1985-01-20T00:43:36+02:00", "utc": "1985-01-19T22:43:36Z", "ms": 475022615902.44244 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:23 on Sat 19 Jan to 04:44 on Sun 20 Jan.", "fact": "1985-01-19T03:23:04Z → 1985-01-20T02:43:57Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:55–00:43 on the 18th, 23:56–00:44 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 14421 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Saturday 19 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": "1985-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-19", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Saturday 19 January. Caturdaśī runs from 05:23 on Sat 19 Jan to 04:44 on Sun 20 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 611, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 }, "end": { "local": "1985-01-20T04:43:57+02:00", "utc": "1985-01-20T02:43:57Z", "ms": 475037037161.3061 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-19T05:23:04+02:00", "utc": "1985-01-19T03:23:04Z", "ms": 474952984163.6832 }, "end": { "local": "1985-01-20T04:43:57+02:00", "utc": "1985-01-20T02:43:57Z", "ms": 475037037161.3061 } }, "kaala": "arunodaya", "days": [ { "local_date": "1985-01-19", "window": { "start": { "local": "1985-01-19T04:09:32+02:00", "utc": "1985-01-19T02:09:32Z", "ms": 474948571714.5541 }, "end": { "local": "1985-01-19T05:33:15+02:00", "utc": "1985-01-19T03:33:15Z", "ms": 474953595118.82117 } }, "covered_min": 10, "window_min": 84, "qualifies": true }, { "local_date": "1985-01-20", "window": { "start": { "local": "1985-01-20T04:10:12+02:00", "utc": "1985-01-20T02:10:12Z", "ms": 475035011676.30035 }, "end": { "local": "1985-01-20T05:34:03+02:00", "utc": "1985-01-20T03:34:03Z", "ms": 475040042866.7941 } }, "covered_min": 34, "window_min": 84, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:23 on Sat 19 Jan to 04:44 on Sun 20 Jan.", "fact": "1985-01-19T03:23:04Z → 1985-01-20T02:43:57Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:10–05:33 on the 19th, 04:10–05:34 on the 20th.", "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 10 of 84 minutes on the 19th and 34 of 84 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 611 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Soweto, 1985: Sunday 20 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1985-01-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-20", "confidence": "boundary" } ], "quote": "In Soweto, Yama Tarpaṇa 1985 falls on Sunday 20 January. Caturdaśī runs from 05:23 on Sat 19 Jan to 04:44 on Sun 20 Jan and covers 34 of 84 minutes of aruṇodaya that dawn. It also reaches the previous dawn for 10 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/soweto/festivals/1985/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": "/soweto/festivals/1985/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12161, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-01-24T06:42:55+02:00", "utc": "1985-01-24T04:42:55Z", "ms": 475389775388.8061 }, "end": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-24T06:42:55+02:00", "utc": "1985-01-24T04:42:55Z", "ms": 475389775388.8061 }, "end": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-01-24", "window": { "start": { "local": "1985-01-24T11:56:33+02:00", "utc": "1985-01-24T09:56:33Z", "ms": 475408593395.1212 }, "end": { "local": "1985-01-24T12:44:33+02:00", "utc": "1985-01-24T10:44:33Z", "ms": 475411473395.1212 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-01-25", "window": { "start": { "local": "1985-01-25T11:56:47+02:00", "utc": "1985-01-25T09:56:47Z", "ms": 475495007325.0624 }, "end": { "local": "1985-01-25T12:44:47+02:00", "utc": "1985-01-25T10:44:47Z", "ms": 475497887325.0624 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:43 on Thu 24 Jan to 08:34 on Fri 25 Jan.", "fact": "1985-01-24T04:42:55Z → 1985-01-25T06:34:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 24th, 11:57–12:45 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12161 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Soweto, 1985: Thursday 24 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-24", "confidence": "determinate" } ], "quote": "In Soweto, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1985 falls on Thursday 24 January. Caturthī runs from 06:43 on Thu 24 Jan to 08:34 on Fri 25 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36860, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-01-24T06:42:55+02:00", "utc": "1985-01-24T04:42:55Z", "ms": 475389775388.8061 }, "end": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-24T06:42:55+02:00", "utc": "1985-01-24T04:42:55Z", "ms": 475389775388.8061 }, "end": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-01-23", "window": { "start": { "local": "1985-01-23T19:04:11+02:00", "utc": "1985-01-23T17:04:11Z", "ms": 475347851190.03815 }, "end": { "local": "1985-01-23T20:28:36+02:00", "utc": "1985-01-23T18:28:36Z", "ms": 475352915537.3885 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "1985-01-24", "window": { "start": { "local": "1985-01-24T19:03:53+02:00", "utc": "1985-01-24T17:03:53Z", "ms": 475434232995.07666 }, "end": { "local": "1985-01-24T20:28:26+02:00", "utc": "1985-01-24T18:28:26Z", "ms": 475439306107.0638 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:43 on Thu 24 Jan to 08:34 on Fri 25 Jan.", "fact": "1985-01-24T04:42:55Z → 1985-01-25T06:34:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:04–20:29 on the 23rd, 19:04–20:28 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 84 minutes on the 23rd and 85 of 85 on the 24th.", "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 36860 s" }, { "step": "ruling", "text": "Tila Caturthī, Soweto, 1985: Thursday 24 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-24", "confidence": "determinate" } ], "quote": "In Soweto, Tila Caturthī 1985 falls on Thursday 24 January. Caturthī runs from 06:43 on Thu 24 Jan to 08:34 on Fri 25 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3831, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "end": { "local": "1985-01-26T10:53:09+02:00", "utc": "1985-01-26T08:53:09Z", "ms": 475577589309.4193 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "end": { "local": "1985-01-26T10:53:09+02:00", "utc": "1985-01-26T08:53:09Z", "ms": 475577589309.4193 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-01-25", "window": { "start": { "local": "1985-01-25T11:56:47+02:00", "utc": "1985-01-25T09:56:47Z", "ms": 475495007325.0624 }, "end": { "local": "1985-01-25T12:44:47+02:00", "utc": "1985-01-25T10:44:47Z", "ms": 475497887325.0624 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-01-26", "window": { "start": { "local": "1985-01-26T11:57:00+02:00", "utc": "1985-01-26T09:57:00Z", "ms": 475581420447.8944 }, "end": { "local": "1985-01-26T12:45:00+02:00", "utc": "1985-01-26T10:45:00Z", "ms": 475584300447.8944 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:34 on Fri 25 Jan to 10:53 on Sat 26 Jan.", "fact": "1985-01-25T06:34:06Z → 1985-01-26T08:53:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 25th, 11:57–12:45 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3831 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Soweto, 1985: Friday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-25", "confidence": "determinate" } ], "quote": "In Soweto, Śrī Pañcamī 1985 falls on Friday 25 January. Pañcamī runs from 08:34 on Fri 25 Jan to 10:53 on Sat 26 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3831, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "end": { "local": "1985-01-26T10:53:09+02:00", "utc": "1985-01-26T08:53:09Z", "ms": 475577589309.4193 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-25T08:34:06+02:00", "utc": "1985-01-25T06:34:06Z", "ms": 475482846200.5495 }, "end": { "local": "1985-01-26T10:53:09+02:00", "utc": "1985-01-26T08:53:09Z", "ms": 475577589309.4193 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-01-25", "window": { "start": { "local": "1985-01-25T11:56:47+02:00", "utc": "1985-01-25T09:56:47Z", "ms": 475495007325.0624 }, "end": { "local": "1985-01-25T12:44:47+02:00", "utc": "1985-01-25T10:44:47Z", "ms": 475497887325.0624 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-01-26", "window": { "start": { "local": "1985-01-26T11:57:00+02:00", "utc": "1985-01-26T09:57:00Z", "ms": 475581420447.8944 }, "end": { "local": "1985-01-26T12:45:00+02:00", "utc": "1985-01-26T10:45:00Z", "ms": 475584300447.8944 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:34 on Fri 25 Jan to 10:53 on Sat 26 Jan.", "fact": "1985-01-25T06:34:06Z → 1985-01-26T08:53:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 25th, 11:57–12:45 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3831 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Soweto, 1985: Friday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-25", "confidence": "determinate" } ], "quote": "In Soweto, Vasanta Pañcamī 1985 falls on Friday 25 January. Pañcamī runs from 08:34 on Fri 25 Jan to 10:53 on Sat 26 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28242, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-01-27T13:30:18+02:00", "utc": "1985-01-27T11:30:18Z", "ms": 475673417984.1919 }, "end": { "local": "1985-01-28T16:11:43+02:00", "utc": "1985-01-28T14:11:43Z", "ms": 475769502513.5361 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-27T13:30:18+02:00", "utc": "1985-01-27T11:30:18Z", "ms": 475673417984.1919 }, "end": { "local": "1985-01-28T16:11:43+02:00", "utc": "1985-01-28T14:11:43Z", "ms": 475769502513.5361 } }, "kaala": "arunodaya", "days": [ { "local_date": "1985-01-27", "window": { "start": { "local": "1985-01-27T04:14:45+02:00", "utc": "1985-01-27T02:14:45Z", "ms": 475640084787.9811 }, "end": { "local": "1985-01-27T05:39:36+02:00", "utc": "1985-01-27T03:39:36Z", "ms": 475645175961.1431 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1985-01-28", "window": { "start": { "local": "1985-01-28T04:15:23+02:00", "utc": "1985-01-28T02:15:23Z", "ms": 475726522532.2216 }, "end": { "local": "1985-01-28T05:40:23+02:00", "utc": "1985-01-28T03:40:23Z", "ms": 475731622990.9093 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:30 on Sun 27 Jan to 16:12 on Mon 28 Jan.", "fact": "1985-01-27T11:30:18Z → 1985-01-28T14:11:43Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:15–05:40 on the 27th, 04:15–05:40 on the 28th.", "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 85 minutes on the 27th and 85 of 85 on the 28th.", "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 28242 s" }, { "step": "ruling", "text": "Ratha Saptamī, Soweto, 1985: Monday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-01-28", "confidence": "determinate" } ], "quote": "In Soweto, Ratha Saptamī 1985 falls on Monday 28 January. Saptamī runs from 13:30 on Sun 27 Jan to 16:12 on Mon 28 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-02-01", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25439, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-01-31T22:05:44+02:00", "utc": "1985-01-31T20:05:44Z", "ms": 476049944375.6635 }, "end": { "local": "1985-02-01T22:40:16+02:00", "utc": "1985-02-01T20:40:16Z", "ms": 476138415571.45105 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-01-31T22:05:44+02:00", "utc": "1985-01-31T20:05:44Z", "ms": 476049944375.6635 }, "end": { "local": "1985-02-01T22:40:16+02:00", "utc": "1985-02-01T20:40:16Z", "ms": 476138415571.45105 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-02-01", "window": { "start": { "local": "1985-02-01T05:43:29+02:00", "utc": "1985-02-01T03:43:29Z", "ms": 476077408642.58594 }, "end": { "local": "1985-02-01T05:43:29+02:00", "utc": "1985-02-01T03:43:29Z", "ms": 476077408642.58594 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-02-02", "window": { "start": { "local": "1985-02-02T05:44:14+02:00", "utc": "1985-02-02T03:44:14Z", "ms": 476163854332.61945 }, "end": { "local": "1985-02-02T05:44:14+02:00", "utc": "1985-02-02T03:44:14Z", "ms": 476163854332.61945 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:06 on Thu 31 Jan to 22:40 on Fri 1 Feb.", "fact": "1985-01-31T20:05:44Z → 1985-02-01T20:40:16Z" }, { "step": "kaala", "text": "Sunrise is at 05:43 on the 1st and 05:44 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25439 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Soweto, 1985: Friday 1 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": "1985-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-01", "confidence": "determinate" } ], "quote": "In Soweto, Jayā Ekādaśī 1985 falls on Friday 1 February. Ekādaśī runs from 22:06 on Thu 31 Jan to 22:40 on Fri 1 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-02-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34713, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-02-01T22:40:16+02:00", "utc": "1985-02-01T20:40:16Z", "ms": 476138415571.45105 }, "end": { "local": "1985-02-02T22:24:42+02:00", "utc": "1985-02-02T20:24:42Z", "ms": 476223882209.57697 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-02-01T22:40:16+02:00", "utc": "1985-02-01T20:40:16Z", "ms": 476138415571.45105 }, "end": { "local": "1985-02-02T22:24:42+02:00", "utc": "1985-02-02T20:24:42Z", "ms": 476223882209.57697 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-02-01", "window": { "start": { "local": "1985-02-01T11:58:02+02:00", "utc": "1985-02-01T09:58:02Z", "ms": 476099881919.14294 }, "end": { "local": "1985-02-01T12:46:02+02:00", "utc": "1985-02-01T10:46:02Z", "ms": 476102761919.14294 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-02-02", "window": { "start": { "local": "1985-02-02T11:58:09+02:00", "utc": "1985-02-02T09:58:09Z", "ms": 476186289267.47595 }, "end": { "local": "1985-02-02T12:46:09+02:00", "utc": "1985-02-02T10:46:09Z", "ms": 476189169267.47595 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:40 on Fri 1 Feb to 22:25 on Sat 2 Feb.", "fact": "1985-02-01T20:40:16Z → 1985-02-02T20:24:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 1st, 11:58–12:46 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34713 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Soweto, 1985: Saturday 2 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": "1985-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-02", "confidence": "determinate" } ], "quote": "In Soweto, Bhīṣma Dvādaśī 1985 falls on Saturday 2 February. Dvādaśī runs from 22:40 on Fri 1 Feb to 22:25 on Sat 2 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-02-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3348, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-02-02T22:24:42+02:00", "utc": "1985-02-02T20:24:42Z", "ms": 476223882209.57697 }, "end": { "local": "1985-02-03T21:21:29+02:00", "utc": "1985-02-03T19:21:29Z", "ms": 476306489328.5501 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-02-02T22:24:42+02:00", "utc": "1985-02-02T20:24:42Z", "ms": 476223882209.57697 }, "end": { "local": "1985-02-03T21:21:29+02:00", "utc": "1985-02-03T19:21:29Z", "ms": 476306489328.5501 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-02-02", "window": { "start": { "local": "1985-02-02T19:00:04+02:00", "utc": "1985-02-02T17:00:04Z", "ms": 476211604202.3324 }, "end": { "local": "1985-02-02T20:26:04+02:00", "utc": "1985-02-02T18:26:04Z", "ms": 476216763601.75183 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1985-02-03", "window": { "start": { "local": "1985-02-03T18:59:32+02:00", "utc": "1985-02-03T16:59:32Z", "ms": 476297971886.8272 }, "end": { "local": "1985-02-03T20:25:42+02:00", "utc": "1985-02-03T18:25:42Z", "ms": 476303141598.5321 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:25 on Sat 2 Feb to 21:21 on Sun 3 Feb.", "fact": "1985-02-02T20:24:42Z → 1985-02-03T19:21:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:00–20:26 on the 2nd, 19:00–20:26 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 86 minutes on the 2nd and 86 of 86 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 3348 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Sunday 3 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": "1985-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-03", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Sunday 3 February. Trayodaśī runs from 22:25 on Sat 2 Feb to 21:21 on Sun 3 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16340, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-02-04T19:36:41+02:00", "utc": "1985-02-04T17:36:41Z", "ms": 476386601474.6554 }, "end": { "local": "1985-02-05T17:18:47+02:00", "utc": "1985-02-05T15:18:47Z", "ms": 476464726664.17346 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1985-02-04T19:36:41+02:00", "utc": "1985-02-04T17:36:41Z", "ms": 476386601474.6554 }, "end": { "local": "1985-02-05T17:18:47+02:00", "utc": "1985-02-05T15:18:47Z", "ms": 476464726664.17346 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-02-04", "window": { "start": { "local": "1985-02-04T11:58:21+02:00", "utc": "1985-02-04T09:58:21Z", "ms": 476359101499.26337 }, "end": { "local": "1985-02-04T12:46:21+02:00", "utc": "1985-02-04T10:46:21Z", "ms": 476361981499.26337 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-02-05", "window": { "start": { "local": "1985-02-05T11:58:26+02:00", "utc": "1985-02-05T09:58:26Z", "ms": 476445506395.01355 }, "end": { "local": "1985-02-05T12:46:26+02:00", "utc": "1985-02-05T10:46:26Z", "ms": 476448386395.01355 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:37 on Mon 4 Feb to 17:19 on Tue 5 Feb.", "fact": "1985-02-04T17:36:41Z → 1985-02-05T15:18:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 4th, 11:58–12:46 on the 5th.", "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 4th and 48 of 48 on the 5th.", "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 16340 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Soweto, 1985: Tuesday 5 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": "1985-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-05", "confidence": "determinate" } ], "quote": "In Soweto, Māghī Pūrṇimā 1985 falls on Tuesday 5 February. Pūrṇimā runs from 19:37 on Mon 4 Feb to 17:19 on Tue 5 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-02-08", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30843, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-02-08T08:44:36+02:00", "utc": "1985-02-08T06:44:36Z", "ms": 476693076263.3848 }, "end": { "local": "1985-02-09T05:51:31+02:00", "utc": "1985-02-09T03:51:31Z", "ms": 476769090759.9602 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-02-08T08:44:36+02:00", "utc": "1985-02-08T06:44:36Z", "ms": 476693076263.3848 }, "end": { "local": "1985-02-09T05:51:31+02:00", "utc": "1985-02-09T03:51:31Z", "ms": 476769090759.9602 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-02-07", "window": { "start": { "local": "1985-02-07T20:40:28+02:00", "utc": "1985-02-07T18:40:28Z", "ms": 476649627798.18085 }, "end": { "local": "1985-02-07T20:40:28+02:00", "utc": "1985-02-07T18:40:28Z", "ms": 476649627798.18085 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-02-08", "window": { "start": { "local": "1985-02-08T21:17:28+02:00", "utc": "1985-02-08T19:17:28Z", "ms": 476738248238.3134 }, "end": { "local": "1985-02-08T21:17:28+02:00", "utc": "1985-02-08T19:17:28Z", "ms": 476738248238.3134 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:45 on Fri 8 Feb to 05:52 on Sat 9 Feb.", "fact": "1985-02-08T06:44:36Z → 1985-02-09T03:51:31Z" }, { "step": "kaala", "text": "Moonrise is at 20:40 on the 7th and 21:17 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 7th and is on the 8th.", "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 30843 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Friday 8 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": "1985-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-08", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Friday 8 February. Caturthī runs from 08:45 on Fri 8 Feb to 05:52 on Sat 9 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-02-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-02-15", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38622, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-02-14T19:09:53+02:00", "utc": "1985-02-14T17:09:53Z", "ms": 477248993185.7817 }, "end": { "local": "1985-02-15T18:43:22+02:00", "utc": "1985-02-15T16:43:22Z", "ms": 477333801564.69684 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-02-14T19:09:53+02:00", "utc": "1985-02-14T17:09:53Z", "ms": 477248993185.7817 }, "end": { "local": "1985-02-15T18:43:22+02:00", "utc": "1985-02-15T16:43:22Z", "ms": 477333801564.69684 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-02-15", "window": { "start": { "local": "1985-02-15T05:53:35+02:00", "utc": "1985-02-15T03:53:35Z", "ms": 477287615387.4935 }, "end": { "local": "1985-02-15T05:53:35+02:00", "utc": "1985-02-15T03:53:35Z", "ms": 477287615387.4935 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-02-16", "window": { "start": { "local": "1985-02-16T05:54:16+02:00", "utc": "1985-02-16T03:54:16Z", "ms": 477374055782.69727 }, "end": { "local": "1985-02-16T05:54:16+02:00", "utc": "1985-02-16T03:54:16Z", "ms": 477374055782.69727 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:10 on Thu 14 Feb to 18:43 on Fri 15 Feb.", "fact": "1985-02-14T17:09:53Z → 1985-02-15T16:43:22Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 15th and 05:54 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38622 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Soweto, 1985: Friday 15 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": "1985-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-15", "confidence": "determinate" } ], "quote": "In Soweto, Vijayā Ekādaśī 1985 falls on Friday 15 February. Ekādaśī runs from 19:10 on Thu 14 Feb to 18:43 on Fri 15 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-02-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-02-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-16", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 389, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-02-16T18:38:48+02:00", "utc": "1985-02-16T16:38:48Z", "ms": 477419927790.8936 }, "end": { "local": "1985-02-17T18:56:24+02:00", "utc": "1985-02-17T16:56:24Z", "ms": 477507384251.93585 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-02-16T18:38:48+02:00", "utc": "1985-02-16T16:38:48Z", "ms": 477419927790.8936 }, "end": { "local": "1985-02-17T18:56:24+02:00", "utc": "1985-02-17T16:56:24Z", "ms": 477507384251.93585 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-02-16", "window": { "start": { "local": "1985-02-16T18:50:43+02:00", "utc": "1985-02-16T16:50:43Z", "ms": 477420643277.39276 }, "end": { "local": "1985-02-16T20:19:17+02:00", "utc": "1985-02-16T18:19:17Z", "ms": 477425956940.73584 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1985-02-17", "window": { "start": { "local": "1985-02-17T18:49:55+02:00", "utc": "1985-02-17T16:49:55Z", "ms": 477506995169.4537 }, "end": { "local": "1985-02-17T20:18:41+02:00", "utc": "1985-02-17T18:18:41Z", "ms": 477512320519.0351 } }, "covered_min": 6, "window_min": 89, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:39 on Sat 16 Feb to 18:56 on Sun 17 Feb.", "fact": "1985-02-16T16:38:48Z → 1985-02-17T16:56:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:19 on the 16th, 18:50–20:19 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 89 of 89 minutes on the 16th and 6 of 89 on the 17th.", "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 389 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Saturday 16 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-02-16", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-16", "confidence": "boundary" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Saturday 16 February. Trayodaśī runs from 18:39 on Sat 16 Feb to 18:56 on Sun 17 Feb and covers all of pradoṣa that evening. It also reaches the next evening for 6 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/soweto/festivals/1985/pradosha-vrata?on=1985-02-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15688, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-02-17T18:56:24+02:00", "utc": "1985-02-17T16:56:24Z", "ms": 477507384251.93585 }, "end": { "local": "1985-02-18T19:37:13+02:00", "utc": "1985-02-18T17:37:13Z", "ms": 477596232589.49335 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-02-17T18:56:24+02:00", "utc": "1985-02-17T16:56:24Z", "ms": 477507384251.93585 }, "end": { "local": "1985-02-18T19:37:13+02:00", "utc": "1985-02-18T17:37:13Z", "ms": 477596232589.49335 } }, "kaala": "nishita", "days": [ { "local_date": "1985-02-17", "window": { "start": { "local": "1985-02-17T23:58:45+02:00", "utc": "1985-02-17T21:58:45Z", "ms": 477525525230.38403 }, "end": { "local": "1985-02-18T00:46:45+02:00", "utc": "1985-02-17T22:46:45Z", "ms": 477528405230.38403 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-02-18", "window": { "start": { "local": "1985-02-18T23:58:40+02:00", "utc": "1985-02-18T21:58:40Z", "ms": 477611920257.4772 }, "end": { "local": "1985-02-19T00:46:40+02:00", "utc": "1985-02-18T22:46:40Z", "ms": 477614800257.4772 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:56 on Sun 17 Feb to 19:37 on Mon 18 Feb.", "fact": "1985-02-17T16:56:24Z → 1985-02-18T17:37:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 17th, 23:59–00:47 on the 18th.", "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 17th and 0 of 48 on the 18th.", "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 15688 s" }, { "step": "ruling", "text": "Mahāśivarātri, Soweto, 1985: Sunday 17 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": "1985-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-17", "confidence": "determinate" } ], "quote": "In Soweto, Mahāśivarātri 1985 falls on Sunday 17 February. Caturdaśī runs from 18:56 on Sun 17 Feb to 19:37 on Mon 18 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-02-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24585, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-02-23T02:31:02+02:00", "utc": "1985-02-23T00:31:02Z", "ms": 477966662285.48126 }, "end": { "local": "1985-02-24T05:07:53+02:00", "utc": "1985-02-24T03:07:53Z", "ms": 478062473237.5493 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-02-23T02:31:02+02:00", "utc": "1985-02-23T00:31:02Z", "ms": 477966662285.48126 }, "end": { "local": "1985-02-24T05:07:53+02:00", "utc": "1985-02-24T03:07:53Z", "ms": 478062473237.5493 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-02-23", "window": { "start": { "local": "1985-02-23T11:57:47+02:00", "utc": "1985-02-23T09:57:47Z", "ms": 478000667002.0763 }, "end": { "local": "1985-02-23T12:45:47+02:00", "utc": "1985-02-23T10:45:47Z", "ms": 478003547002.0763 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-02-24", "window": { "start": { "local": "1985-02-24T11:57:38+02:00", "utc": "1985-02-24T09:57:38Z", "ms": 478087058358.9813 }, "end": { "local": "1985-02-24T12:45:38+02:00", "utc": "1985-02-24T10:45:38Z", "ms": 478089938358.9813 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:31 on Sat 23 Feb to 05:08 on Sun 24 Feb.", "fact": "1985-02-23T00:31:02Z → 1985-02-24T03:07:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 23rd, 11:58–12:46 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 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24585 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Saturday 23 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-02-23", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Saturday 23 February. Caturthī runs from 02:31 on Sat 23 Feb to 05:08 on Sun 24 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-02-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-03-03", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30557, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-03-02T15:23:23+02:00", "utc": "1985-03-02T13:23:23Z", "ms": 478617803142.5194 }, "end": { "local": "1985-03-03T14:32:46+02:00", "utc": "1985-03-03T12:32:46Z", "ms": 478701166425.6973 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-03-02T15:23:23+02:00", "utc": "1985-03-02T13:23:23Z", "ms": 478617803142.5194 }, "end": { "local": "1985-03-03T14:32:46+02:00", "utc": "1985-03-03T12:32:46Z", "ms": 478701166425.6973 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-03-02", "window": { "start": { "local": "1985-03-02T06:02:56+02:00", "utc": "1985-03-02T04:02:56Z", "ms": 478584175558.54987 }, "end": { "local": "1985-03-02T06:02:56+02:00", "utc": "1985-03-02T04:02:56Z", "ms": 478584175558.54987 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-03-03", "window": { "start": { "local": "1985-03-03T06:03:29+02:00", "utc": "1985-03-03T04:03:29Z", "ms": 478670609478.14154 }, "end": { "local": "1985-03-03T06:03:29+02:00", "utc": "1985-03-03T04:03:29Z", "ms": 478670609478.14154 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:23 on Sat 2 Mar to 14:33 on Sun 3 Mar.", "fact": "1985-03-02T13:23:23Z → 1985-03-03T12:32:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:03 on the 2nd and 06:03 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30557 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Soweto, 1985: Sunday 3 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": "1985-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-03", "confidence": "determinate" } ], "quote": "In Soweto, Āmalakī Ekādaśī 1985 falls on Sunday 3 March. Ekādaśī runs from 15:23 on Sat 2 Mar to 14:33 on Sun 3 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-03-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-03-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20629, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-03-04T12:52:25+02:00", "utc": "1985-03-04T10:52:25Z", "ms": 478781545405.091 }, "end": { "local": "1985-03-05T10:29:19+02:00", "utc": "1985-03-05T08:29:19Z", "ms": 478859358834.4683 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-03-04T12:52:25+02:00", "utc": "1985-03-04T10:52:25Z", "ms": 478781545405.091 }, "end": { "local": "1985-03-05T10:29:19+02:00", "utc": "1985-03-05T08:29:19Z", "ms": 478859358834.4683 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-03-04", "window": { "start": { "local": "1985-03-04T18:36:15+02:00", "utc": "1985-03-04T16:36:15Z", "ms": 478802174798.11456 }, "end": { "local": "1985-03-04T20:08:02+02:00", "utc": "1985-03-04T18:08:02Z", "ms": 478807681645.01874 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "1985-03-05", "window": { "start": { "local": "1985-03-05T18:35:15+02:00", "utc": "1985-03-05T16:35:15Z", "ms": 478888514752.6587 }, "end": { "local": "1985-03-05T20:07:14+02:00", "utc": "1985-03-05T18:07:14Z", "ms": 478894033976.0766 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:52 on Mon 4 Mar to 10:29 on Tue 5 Mar.", "fact": "1985-03-04T10:52:25Z → 1985-03-05T08:29:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:08 on the 4th, 18:35–20:07 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 92 of 92 minutes on the 4th and 0 of 92 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 20629 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Monday 4 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": "1985-03-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-04", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Monday 4 March. Trayodaśī runs from 12:52 on Mon 4 Mar to 10:29 on Tue 5 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-03-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30703, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-03-06T07:32:43+02:00", "utc": "1985-03-06T05:32:43Z", "ms": 478935162504.7503 }, "end": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-03-06T07:32:43+02:00", "utc": "1985-03-06T05:32:43Z", "ms": 478935162504.7503 }, "end": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 } }, "kaala": "sayahna", "days": [ { "local_date": "1985-03-06", "window": { "start": { "local": "1985-03-06T16:04:25+02:00", "utc": "1985-03-06T14:04:25Z", "ms": 478965865149.193 }, "end": { "local": "1985-03-06T18:34:14+02:00", "utc": "1985-03-06T16:34:14Z", "ms": 478974854204.418 } }, "covered_min": 150, "window_min": 150, "qualifies": true }, { "local_date": "1985-03-07", "window": { "start": { "local": "1985-03-07T16:03:43+02:00", "utc": "1985-03-07T14:03:43Z", "ms": 479052222818.9102 }, "end": { "local": "1985-03-07T18:33:13+02:00", "utc": "1985-03-07T16:33:13Z", "ms": 479061193184.7683 } }, "covered_min": 0, "window_min": 150, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:33 on Wed 6 Mar to 04:13 on Thu 7 Mar.", "fact": "1985-03-06T05:32:43Z → 1985-03-07T02:13:07Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:04–18:34 on the 6th, 16:04–18:33 on the 7th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 150 of 150 minutes on the 6th and 0 of 150 on the 7th.", "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 30703 s" }, { "step": "ruling", "text": "Holikā Dahana, Soweto, 1985: Wednesday 6 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": "1985-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-06", "confidence": "determinate" } ], "quote": "In Soweto, Holikā Dahana 1985 falls on Wednesday 6 March. Pūrṇimā runs from 07:33 on Wed 6 Mar to 04:13 on Thu 7 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30703, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-03-06T07:32:43+02:00", "utc": "1985-03-06T05:32:43Z", "ms": 478935162504.7503 }, "end": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1985-03-06T07:32:43+02:00", "utc": "1985-03-06T05:32:43Z", "ms": 478935162504.7503 }, "end": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 } }, "kaala": "sayahna", "days": [ { "local_date": "1985-03-06", "window": { "start": { "local": "1985-03-06T16:04:25+02:00", "utc": "1985-03-06T14:04:25Z", "ms": 478965865149.193 }, "end": { "local": "1985-03-06T18:34:14+02:00", "utc": "1985-03-06T16:34:14Z", "ms": 478974854204.418 } }, "covered_min": 150, "window_min": 150, "qualifies": true }, { "local_date": "1985-03-07", "window": { "start": { "local": "1985-03-07T16:03:43+02:00", "utc": "1985-03-07T14:03:43Z", "ms": 479052222818.9102 }, "end": { "local": "1985-03-07T18:33:13+02:00", "utc": "1985-03-07T16:33:13Z", "ms": 479061193184.7683 } }, "covered_min": 0, "window_min": 150, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1985-03-06", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:33 on Wed 6 Mar to 04:13 on Thu 7 Mar.", "fact": "1985-03-06T05:32:43Z → 1985-03-07T02:13:07Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:04–18:34 on the 6th, 16:04–18:33 on the 7th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 150 of 150 minutes on the 6th and 0 of 150 on the 7th.", "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 30703 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Wednesday 6 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Soweto, 1985: Thursday 7 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": "1985-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-07", "confidence": "determinate" } ], "quote": "In Soweto, Holī 1985 falls on Thursday 7 March. It is kept the day after Holikā Dahana, which falls on Wednesday 6 March. Pūrṇimā runs from 07:33 on Wed 6 Mar to 04:13 on Thu 7 Mar and covers all of sāyāhna on the 6th.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6755, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 }, "end": { "local": "1985-03-08T00:41:28+02:00", "utc": "1985-03-07T22:41:28Z", "ms": 479083287759.0519 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-07T04:13:07+02:00", "utc": "1985-03-07T02:13:07Z", "ms": 479009586810.92285 }, "end": { "local": "1985-03-08T00:41:28+02:00", "utc": "1985-03-07T22:41:28Z", "ms": 479083287759.0519 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-03-07", "window": { "start": { "local": "1985-03-07T06:05:41+02:00", "utc": "1985-03-07T04:05:41Z", "ms": 479016341355.4779 }, "end": { "local": "1985-03-07T06:05:41+02:00", "utc": "1985-03-07T04:05:41Z", "ms": 479016341355.4779 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-03-08", "window": { "start": { "local": "1985-03-08T06:06:13+02:00", "utc": "1985-03-08T04:06:13Z", "ms": 479102773448.636 }, "end": { "local": "1985-03-08T06:06:13+02:00", "utc": "1985-03-08T04:06:13Z", "ms": 479102773448.636 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 04:13 on Thu 7 Mar to 00:41 on Fri 8 Mar.", "fact": "1985-03-07T02:13:07Z → 1985-03-07T22:41:28Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 7th and 06:06 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 6755 s" }, { "step": "ruling", "text": "Vasantotsava, Soweto, 1985: Thursday 7 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": "1985-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-07", "confidence": "determinate" } ], "quote": "In Soweto, Vasantotsava 1985 falls on Thursday 7 March. Pratipadā runs from 04:13 on Thu 7 Mar to 00:41 on Fri 8 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-03-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9736, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-03-09T17:44:16+02:00", "utc": "1985-03-09T15:44:16Z", "ms": 479231055980.3054 }, "end": { "local": "1985-03-10T14:37:43+02:00", "utc": "1985-03-10T12:37:43Z", "ms": 479306262907.238 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-09T17:44:16+02:00", "utc": "1985-03-09T15:44:16Z", "ms": 479231055980.3054 }, "end": { "local": "1985-03-10T14:37:43+02:00", "utc": "1985-03-10T12:37:43Z", "ms": 479306262907.238 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-03-09", "window": { "start": { "local": "1985-03-09T20:26:32+02:00", "utc": "1985-03-09T18:26:32Z", "ms": 479240791892.36334 }, "end": { "local": "1985-03-09T20:26:32+02:00", "utc": "1985-03-09T18:26:32Z", "ms": 479240791892.36334 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-03-10", "window": { "start": { "local": "1985-03-10T21:05:58+02:00", "utc": "1985-03-10T19:05:58Z", "ms": 479329558355.18823 }, "end": { "local": "1985-03-10T21:05:58+02:00", "utc": "1985-03-10T19:05:58Z", "ms": 479329558355.18823 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:44 on Sat 9 Mar to 14:38 on Sun 10 Mar.", "fact": "1985-03-09T15:44:16Z → 1985-03-10T12:37:43Z" }, { "step": "kaala", "text": "Moonrise is at 20:27 on the 9th and 21:06 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 9th and is not on the 10th.", "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 9736 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Saturday 9 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": "1985-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-09", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Saturday 9 March. Caturthī runs from 17:44 on Sat 9 Mar to 14:38 on Sun 10 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-03-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13496, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-03-13T08:08:58+02:00", "utc": "1985-03-13T06:08:58Z", "ms": 479542138398.01263 }, "end": { "local": "1985-03-14T07:07:58+02:00", "utc": "1985-03-14T05:07:58Z", "ms": 479624877678.6413 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-13T08:08:58+02:00", "utc": "1985-03-13T06:08:58Z", "ms": 479542138398.01263 }, "end": { "local": "1985-03-14T07:07:58+02:00", "utc": "1985-03-14T05:07:58Z", "ms": 479624877678.6413 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-13", "window": { "start": { "local": "1985-03-13T11:53:54+02:00", "utc": "1985-03-13T09:53:54Z", "ms": 479555634203.71576 }, "end": { "local": "1985-03-13T12:41:54+02:00", "utc": "1985-03-13T10:41:54Z", "ms": 479558514203.71576 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-03-14", "window": { "start": { "local": "1985-03-14T11:53:38+02:00", "utc": "1985-03-14T09:53:38Z", "ms": 479642017690.0037 }, "end": { "local": "1985-03-14T12:41:38+02:00", "utc": "1985-03-14T10:41:38Z", "ms": 479644897690.0037 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:09 on Wed 13 Mar to 07:08 on Thu 14 Mar.", "fact": "1985-03-13T06:08:58Z → 1985-03-14T05:07:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 13th, 11:54–12:42 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 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: purvaviddha → only-day · margin 13496 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Soweto, 1985: Wednesday 13 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-03-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-13", "confidence": "determinate" } ], "quote": "In Soweto, Śītalāṣṭamī 1985 falls on Wednesday 13 March. Aṣṭamī runs from 08:09 on Wed 13 Mar to 07:08 on Thu 14 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-03-17", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2312, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-03-16T06:48:52+02:00", "utc": "1985-03-16T04:48:52Z", "ms": 479796532346.8943 }, "end": { "local": "1985-03-17T07:25:58+02:00", "utc": "1985-03-17T05:25:58Z", "ms": 479885157617.59283 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-16T06:48:52+02:00", "utc": "1985-03-16T04:48:52Z", "ms": 479796532346.8943 }, "end": { "local": "1985-03-17T07:25:58+02:00", "utc": "1985-03-17T05:25:58Z", "ms": 479885157617.59283 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-03-16", "window": { "start": { "local": "1985-03-16T06:10:20+02:00", "utc": "1985-03-16T04:10:20Z", "ms": 479794220165.71326 }, "end": { "local": "1985-03-16T06:10:20+02:00", "utc": "1985-03-16T04:10:20Z", "ms": 479794220165.71326 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-03-17", "window": { "start": { "local": "1985-03-17T06:10:50+02:00", "utc": "1985-03-17T04:10:50Z", "ms": 479880649958.6671 }, "end": { "local": "1985-03-17T06:10:50+02:00", "utc": "1985-03-17T04:10:50Z", "ms": 479880649958.6671 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:49 on Sat 16 Mar to 07:26 on Sun 17 Mar.", "fact": "1985-03-16T04:48:52Z → 1985-03-17T05:25:58Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 16th and 06:11 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 2312 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Soweto, 1985: Sunday 17 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": "1985-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-17", "confidence": "determinate" } ], "quote": "In Soweto, Pāpamocanī Ekādaśī 1985 falls on Sunday 17 March. Ekādaśī runs from 06:49 on Sat 16 Mar to 07:26 on Sun 17 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-03-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-03-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30111, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-03-18T08:30:11+02:00", "utc": "1985-03-18T06:30:11Z", "ms": 479975410735.0687 }, "end": { "local": "1985-03-19T09:58:44+02:00", "utc": "1985-03-19T07:58:44Z", "ms": 480067123766.2496 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-18T08:30:11+02:00", "utc": "1985-03-18T06:30:11Z", "ms": 479975410735.0687 }, "end": { "local": "1985-03-19T09:58:44+02:00", "utc": "1985-03-19T07:58:44Z", "ms": 480067123766.2496 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-03-18", "window": { "start": { "local": "1985-03-18T18:21:39+02:00", "utc": "1985-03-18T16:21:39Z", "ms": 480010899450.21063 }, "end": { "local": "1985-03-18T19:56:21+02:00", "utc": "1985-03-18T17:56:21Z", "ms": 480016580719.518 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1985-03-19", "window": { "start": { "local": "1985-03-19T18:20:35+02:00", "utc": "1985-03-19T16:20:35Z", "ms": 480097235058.82446 }, "end": { "local": "1985-03-19T19:55:29+02:00", "utc": "1985-03-19T17:55:29Z", "ms": 480102928812.1234 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:30 on Mon 18 Mar to 09:59 on Tue 19 Mar.", "fact": "1985-03-18T06:30:11Z → 1985-03-19T07:58:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:22–19:56 on the 18th, 18:21–19:55 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 95 of 95 minutes on the 18th and 0 of 95 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 30111 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Monday 18 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": "1985-03-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-18", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Monday 18 March. Trayodaśī runs from 08:30 on Mon 18 Mar to 09:59 on Tue 19 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-03-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-03-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33480, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-03-19T09:58:44+02:00", "utc": "1985-03-19T07:58:44Z", "ms": 480067123766.2496 }, "end": { "local": "1985-03-20T11:49:05+02:00", "utc": "1985-03-20T09:49:05Z", "ms": 480160145458.0528 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-19T09:58:44+02:00", "utc": "1985-03-19T07:58:44Z", "ms": 480067123766.2496 }, "end": { "local": "1985-03-20T11:49:05+02:00", "utc": "1985-03-20T09:49:05Z", "ms": 480160145458.0528 } }, "kaala": "nishita", "days": [ { "local_date": "1985-03-18", "window": { "start": { "local": "1985-03-18T23:52:44+02:00", "utc": "1985-03-18T21:52:44Z", "ms": 480030764210.1134 }, "end": { "local": "1985-03-19T00:40:44+02:00", "utc": "1985-03-18T22:40:44Z", "ms": 480033644210.1134 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-03-19", "window": { "start": { "local": "1985-03-19T23:52:27+02:00", "utc": "1985-03-19T21:52:27Z", "ms": 480117146633.69556 }, "end": { "local": "1985-03-20T00:40:27+02:00", "utc": "1985-03-19T22:40:27Z", "ms": 480120026633.69556 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:59 on Tue 19 Mar to 11:49 on Wed 20 Mar.", "fact": "1985-03-19T07:58:44Z → 1985-03-20T09:49:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:53–00:41 on the 18th, 23:52–00:40 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 33480 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Tuesday 19 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": "1985-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-19", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Tuesday 19 March. Caturdaśī runs from 09:59 on Tue 19 Mar to 11:49 on Wed 20 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-03-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4745, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-03-21T13:58:42+02:00", "utc": "1985-03-21T11:58:42Z", "ms": 480254321790.7953 }, "end": { "local": "1985-03-22T16:24:18+02:00", "utc": "1985-03-22T14:24:18Z", "ms": 480349457925.3433 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-21T13:58:42+02:00", "utc": "1985-03-21T11:58:42Z", "ms": 480254321790.7953 }, "end": { "local": "1985-03-22T16:24:18+02:00", "utc": "1985-03-22T14:24:18Z", "ms": 480349457925.3433 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-21", "window": { "start": { "local": "1985-03-21T11:51:37+02:00", "utc": "1985-03-21T09:51:37Z", "ms": 480246696628.7538 }, "end": { "local": "1985-03-21T12:39:37+02:00", "utc": "1985-03-21T10:39:37Z", "ms": 480249576628.7538 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-03-22", "window": { "start": { "local": "1985-03-22T11:51:19+02:00", "utc": "1985-03-22T09:51:19Z", "ms": 480333078767.0375 }, "end": { "local": "1985-03-22T12:39:19+02:00", "utc": "1985-03-22T10:39:19Z", "ms": 480335958767.0375 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:59 on Thu 21 Mar to 16:24 on Fri 22 Mar.", "fact": "1985-03-21T11:58:42Z → 1985-03-22T14:24:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 21st, 11:51–12:39 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "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 4745 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Soweto, 1985: Friday 22 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": "1985-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-22", "confidence": "determinate" } ], "quote": "In Soweto, Navarātrārambha (Caitra) (Chaitra Navratri) 1985 falls on Friday 22 March. Pratipadā runs from 13:59 on Thu 21 Mar to 16:24 on Fri 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22931, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-03-23T19:01:12+02:00", "utc": "1985-03-23T17:01:12Z", "ms": 480445272026.50055 }, "end": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-23T19:01:12+02:00", "utc": "1985-03-23T17:01:12Z", "ms": 480445272026.50055 }, "end": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-23", "window": { "start": { "local": "1985-03-23T11:51:01+02:00", "utc": "1985-03-23T09:51:01Z", "ms": 480419460816.05066 }, "end": { "local": "1985-03-23T12:39:01+02:00", "utc": "1985-03-23T10:39:01Z", "ms": 480422340816.05066 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-03-24", "window": { "start": { "local": "1985-03-24T11:50:43+02:00", "utc": "1985-03-24T09:50:43Z", "ms": 480505842793.38574 }, "end": { "local": "1985-03-24T12:38:43+02:00", "utc": "1985-03-24T10:38:43Z", "ms": 480508722793.38574 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:01 on Sat 23 Mar to 21:43 on Sun 24 Mar.", "fact": "1985-03-23T17:01:12Z → 1985-03-24T19:42:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 23rd, 11:51–12:39 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22931 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Soweto, 1985: Sunday 24 March.", "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": "1985-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-24", "confidence": "determinate" } ], "quote": "In Soweto, Gaurī Tṛtīyā (Gangaur) 1985 falls on Sunday 24 March. Tṛtīyā runs from 19:01 on Sat 23 Mar to 21:43 on Sun 24 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22931, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-03-23T19:01:12+02:00", "utc": "1985-03-23T17:01:12Z", "ms": 480445272026.50055 }, "end": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-23T19:01:12+02:00", "utc": "1985-03-23T17:01:12Z", "ms": 480445272026.50055 }, "end": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-23", "window": { "start": { "local": "1985-03-23T11:51:01+02:00", "utc": "1985-03-23T09:51:01Z", "ms": 480419460816.05066 }, "end": { "local": "1985-03-23T12:39:01+02:00", "utc": "1985-03-23T10:39:01Z", "ms": 480422340816.05066 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-03-24", "window": { "start": { "local": "1985-03-24T11:50:43+02:00", "utc": "1985-03-24T09:50:43Z", "ms": 480505842793.38574 }, "end": { "local": "1985-03-24T12:38:43+02:00", "utc": "1985-03-24T10:38:43Z", "ms": 480508722793.38574 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:01 on Sat 23 Mar to 21:43 on Sun 24 Mar.", "fact": "1985-03-23T17:01:12Z → 1985-03-24T19:42:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 23rd, 11:51–12:39 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22931 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Soweto, 1985: Sunday 24 March.", "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": "1985-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-24", "confidence": "determinate" } ], "quote": "In Soweto, Saubhāgya Śayana Vrata 1985 falls on Sunday 24 March. Tṛtīyā runs from 19:01 on Sat 23 Mar to 21:43 on Sun 24 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-03-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32634, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 }, "end": { "local": "1985-03-26T00:19:24+02:00", "utc": "1985-03-25T22:19:24Z", "ms": 480637163823.4622 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-24T21:42:36+02:00", "utc": "1985-03-24T19:42:36Z", "ms": 480541356384.9464 }, "end": { "local": "1985-03-26T00:19:24+02:00", "utc": "1985-03-25T22:19:24Z", "ms": 480637163823.4622 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-24", "window": { "start": { "local": "1985-03-24T11:50:43+02:00", "utc": "1985-03-24T09:50:43Z", "ms": 480505842793.38574 }, "end": { "local": "1985-03-24T12:38:43+02:00", "utc": "1985-03-24T10:38:43Z", "ms": 480508722793.38574 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-03-25", "window": { "start": { "local": "1985-03-25T11:50:25+02:00", "utc": "1985-03-25T09:50:25Z", "ms": 480592224716.75903 }, "end": { "local": "1985-03-25T12:38:25+02:00", "utc": "1985-03-25T10:38:25Z", "ms": 480595104716.75903 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:43 on Sun 24 Mar to 00:19 on Tue 26 Mar.", "fact": "1985-03-24T19:42:36Z → 1985-03-25T22:19:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 24th, 11:50–12:38 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 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32634 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Monday 25 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": "1985-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-25", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Monday 25 March. Caturthī runs from 21:43 on Sun 24 Mar to 00:19 on Tue 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-03-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32954, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-03-26T00:19:24+02:00", "utc": "1985-03-25T22:19:24Z", "ms": 480637163823.4622 }, "end": { "local": "1985-03-27T02:40:34+02:00", "utc": "1985-03-27T00:40:34Z", "ms": 480732034369.84235 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-26T00:19:24+02:00", "utc": "1985-03-25T22:19:24Z", "ms": 480637163823.4622 }, "end": { "local": "1985-03-27T02:40:34+02:00", "utc": "1985-03-27T00:40:34Z", "ms": 480732034369.84235 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-26", "window": { "start": { "local": "1985-03-26T11:50:07+02:00", "utc": "1985-03-26T09:50:07Z", "ms": 480678606604.0351 }, "end": { "local": "1985-03-26T12:38:07+02:00", "utc": "1985-03-26T10:38:07Z", "ms": 480681486604.0351 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-03-27", "window": { "start": { "local": "1985-03-27T11:49:48+02:00", "utc": "1985-03-27T09:49:48Z", "ms": 480764988473.2479 }, "end": { "local": "1985-03-27T12:37:48+02:00", "utc": "1985-03-27T10:37:48Z", "ms": 480767868473.2479 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:19 on Tue 26 Mar to 02:41 on Wed 27 Mar.", "fact": "1985-03-25T22:19:24Z → 1985-03-27T00:40:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 26th, 11:50–12:38 on the 27th.", "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 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32954 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Soweto, 1985: Tuesday 26 March.", "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": "1985-03-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-26", "confidence": "determinate" } ], "quote": "In Soweto, Lakṣmī Pañcamī 1985 falls on Tuesday 26 March. Pañcamī runs from 00:19 on Tue 26 Mar to 02:41 on Wed 27 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19749, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-03-29T05:50:12+02:00", "utc": "1985-03-29T03:50:12Z", "ms": 480916212314.94775 }, "end": { "local": "1985-03-30T06:19:45+02:00", "utc": "1985-03-30T04:19:45Z", "ms": 481004385474.1563 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-29T05:50:12+02:00", "utc": "1985-03-29T03:50:12Z", "ms": 480916212314.94775 }, "end": { "local": "1985-03-30T06:19:45+02:00", "utc": "1985-03-30T04:19:45Z", "ms": 481004385474.1563 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-29", "window": { "start": { "local": "1985-03-29T11:49:12+02:00", "utc": "1985-03-29T09:49:12Z", "ms": 480937752230.64905 }, "end": { "local": "1985-03-29T12:37:12+02:00", "utc": "1985-03-29T10:37:12Z", "ms": 480940632230.64905 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-03-30", "window": { "start": { "local": "1985-03-30T11:48:54+02:00", "utc": "1985-03-30T09:48:54Z", "ms": 481024134156.1033 }, "end": { "local": "1985-03-30T12:36:54+02:00", "utc": "1985-03-30T10:36:54Z", "ms": 481027014156.1033 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:50 on Fri 29 Mar to 06:20 on Sat 30 Mar.", "fact": "1985-03-29T03:50:12Z → 1985-03-30T04:19:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 29th, 11:49–12:37 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 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19749 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Soweto, 1985: Friday 29 March.", "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": "1985-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-29", "confidence": "determinate" } ], "quote": "In Soweto, Bhavānī Utpatti 1985 falls on Friday 29 March. Aṣṭamī runs from 05:50 on Fri 29 Mar to 06:20 on Sat 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19749, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1985-03-30T06:19:45+02:00", "utc": "1985-03-30T04:19:45Z", "ms": 481004385474.1563 }, "end": { "local": "1985-03-31T05:58:41+02:00", "utc": "1985-03-31T03:58:41Z", "ms": 481089521132.9542 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-03-30T06:19:45+02:00", "utc": "1985-03-30T04:19:45Z", "ms": 481004385474.1563 }, "end": { "local": "1985-03-31T05:58:41+02:00", "utc": "1985-03-31T03:58:41Z", "ms": 481089521132.9542 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-03-30", "window": { "start": { "local": "1985-03-30T11:48:54+02:00", "utc": "1985-03-30T09:48:54Z", "ms": 481024134156.1033 }, "end": { "local": "1985-03-30T12:36:54+02:00", "utc": "1985-03-30T10:36:54Z", "ms": 481027014156.1033 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-03-31", "window": { "start": { "local": "1985-03-31T11:48:36+02:00", "utc": "1985-03-31T09:48:36Z", "ms": 481110516138.2141 }, "end": { "local": "1985-03-31T12:36:36+02:00", "utc": "1985-03-31T10:36:36Z", "ms": 481113396138.2141 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:20 on Sat 30 Mar to 05:59 on Sun 31 Mar.", "fact": "1985-03-30T04:19:45Z → 1985-03-31T03:58:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 30th, 11:49–12:37 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19749 s" }, { "step": "ruling", "text": "Rāma Navamī, Soweto, 1985: Saturday 30 March.", "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": "1985-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-03-30", "confidence": "determinate" } ], "quote": "In Soweto, Rāma Navamī 1985 falls on Saturday 30 March. Navamī runs from 06:20 on Sat 30 Mar to 05:59 on Sun 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-04-01", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5477, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-04-01T04:46:42+02:00", "utc": "1985-04-01T02:46:42Z", "ms": 481171602464.309 }, "end": { "local": "1985-04-02T02:47:19+02:00", "utc": "1985-04-02T00:47:19Z", "ms": 481250839357.7907 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-04-01T04:46:42+02:00", "utc": "1985-04-01T02:46:42Z", "ms": 481171602464.309 }, "end": { "local": "1985-04-02T02:47:19+02:00", "utc": "1985-04-02T00:47:19Z", "ms": 481250839357.7907 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-04-01", "window": { "start": { "local": "1985-04-01T06:17:59+02:00", "utc": "1985-04-01T04:17:59Z", "ms": 481177079162.4792 }, "end": { "local": "1985-04-01T06:17:59+02:00", "utc": "1985-04-01T04:17:59Z", "ms": 481177079162.4792 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-04-02", "window": { "start": { "local": "1985-04-02T06:18:27+02:00", "utc": "1985-04-02T04:18:27Z", "ms": 481263507078.6278 }, "end": { "local": "1985-04-02T06:18:27+02:00", "utc": "1985-04-02T04:18:27Z", "ms": 481263507078.6278 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:47 on Mon 1 Apr to 02:47 on Tue 2 Apr.", "fact": "1985-04-01T02:46:42Z → 1985-04-02T00:47:19Z" }, { "step": "kaala", "text": "Sunrise is at 06:18 on the 1st and 06:18 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5477 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Soweto, 1985: Monday 1 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": "1985-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-01", "confidence": "determinate" } ], "quote": "In Soweto, Kāmadā Ekādaśī 1985 falls on Monday 1 April. Ekādaśī runs from 04:47 on Mon 1 Apr to 02:47 on Tue 2 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-04-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29924, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-04-03T00:07:02+02:00", "utc": "1985-04-02T22:07:02Z", "ms": 481327621953.35864 }, "end": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-04-03T00:07:02+02:00", "utc": "1985-04-02T22:07:02Z", "ms": 481327621953.35864 }, "end": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-02", "window": { "start": { "local": "1985-04-02T11:48:00+02:00", "utc": "1985-04-02T09:48:00Z", "ms": 481283280352.3254 }, "end": { "local": "1985-04-02T12:36:00+02:00", "utc": "1985-04-02T10:36:00Z", "ms": 481286160352.3254 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-03", "window": { "start": { "local": "1985-04-03T11:47:43+02:00", "utc": "1985-04-03T09:47:43Z", "ms": 481369662626.25024 }, "end": { "local": "1985-04-03T12:35:43+02:00", "utc": "1985-04-03T10:35:43Z", "ms": 481372542626.25024 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:07 on Wed 3 Apr to 20:54 on Wed 3 Apr.", "fact": "1985-04-02T22:07:02Z → 1985-04-03T18:54:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 2nd, 11:48–12:36 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 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 29924 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Soweto, 1985: Wednesday 3 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": "1985-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-03", "confidence": "determinate" } ], "quote": "In Soweto, Anaṅga Trayodaśī 1985 falls on Wednesday 3 April. Trayodaśī runs from 00:07 on Wed 3 Apr to 20:54 on Wed 3 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-04-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4317, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-04-03T00:07:02+02:00", "utc": "1985-04-02T22:07:02Z", "ms": 481327621953.35864 }, "end": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-04-03T00:07:02+02:00", "utc": "1985-04-02T22:07:02Z", "ms": 481327621953.35864 }, "end": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-04-02", "window": { "start": { "local": "1985-04-02T18:05:34+02:00", "utc": "1985-04-02T16:05:34Z", "ms": 481305933626.02295 }, "end": { "local": "1985-04-02T19:43:20+02:00", "utc": "1985-04-02T17:43:20Z", "ms": 481311800472.6773 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1985-04-03", "window": { "start": { "local": "1985-04-03T18:04:30+02:00", "utc": "1985-04-03T16:04:30Z", "ms": 481392270276.56995 }, "end": { "local": "1985-04-03T19:42:29+02:00", "utc": "1985-04-03T17:42:29Z", "ms": 481398149289.03357 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:07 on Wed 3 Apr to 20:54 on Wed 3 Apr.", "fact": "1985-04-02T22:07:02Z → 1985-04-03T18:54:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:06–19:43 on the 2nd, 18:05–19:42 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 2nd and 98 of 98 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4317 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Wednesday 3 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": "1985-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-03", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Wednesday 3 April. Trayodaśī runs from 00:07 on Wed 3 Apr to 20:54 on Wed 3 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17040, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 }, "end": { "local": "1985-04-04T17:19:25+02:00", "utc": "1985-04-04T15:19:25Z", "ms": 481475964767.2132 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-04-03T20:54:26+02:00", "utc": "1985-04-03T18:54:26Z", "ms": 481402466323.3434 }, "end": { "local": "1985-04-04T17:19:25+02:00", "utc": "1985-04-04T15:19:25Z", "ms": 481475964767.2132 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-03", "window": { "start": { "local": "1985-04-03T11:47:43+02:00", "utc": "1985-04-03T09:47:43Z", "ms": 481369662626.25024 }, "end": { "local": "1985-04-03T12:35:43+02:00", "utc": "1985-04-03T10:35:43Z", "ms": 481372542626.25024 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-04", "window": { "start": { "local": "1985-04-04T11:47:25+02:00", "utc": "1985-04-04T09:47:25Z", "ms": 481456045040.83124 }, "end": { "local": "1985-04-04T12:35:25+02:00", "utc": "1985-04-04T10:35:25Z", "ms": 481458925040.83124 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:54 on Wed 3 Apr to 17:19 on Thu 4 Apr.", "fact": "1985-04-03T18:54:26Z → 1985-04-04T15:19:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 3rd, 11:47–12:35 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 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: paraviddha → only-day · margin 17040 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Soweto, 1985: Thursday 4 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": "1985-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-04", "confidence": "determinate" } ], "quote": "In Soweto, Viṣṇudamanaka Caturdaśī 1985 falls on Thursday 4 April. Caturdaśī runs from 20:54 on Wed 3 Apr to 17:19 on Thu 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3438, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-04-04T17:19:25+02:00", "utc": "1985-04-04T15:19:25Z", "ms": 481475964767.2132 }, "end": { "local": "1985-04-05T13:32:26+02:00", "utc": "1985-04-05T11:32:26Z", "ms": 481548745896.8483 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1985-04-04T17:19:25+02:00", "utc": "1985-04-04T15:19:25Z", "ms": 481475964767.2132 }, "end": { "local": "1985-04-05T13:32:26+02:00", "utc": "1985-04-05T11:32:26Z", "ms": 481548745896.8483 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-04", "window": { "start": { "local": "1985-04-04T11:47:25+02:00", "utc": "1985-04-04T09:47:25Z", "ms": 481456045040.83124 }, "end": { "local": "1985-04-04T12:35:25+02:00", "utc": "1985-04-04T10:35:25Z", "ms": 481458925040.83124 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-05", "window": { "start": { "local": "1985-04-05T11:47:08+02:00", "utc": "1985-04-05T09:47:08Z", "ms": 481542427619.08105 }, "end": { "local": "1985-04-05T12:35:08+02:00", "utc": "1985-04-05T10:35:08Z", "ms": 481545307619.08105 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:19 on Thu 4 Apr to 13:32 on Fri 5 Apr.", "fact": "1985-04-04T15:19:25Z → 1985-04-05T11:32:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 4th, 11:47–12:35 on the 5th.", "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 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: paraviddha → only-day · margin 3438 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Soweto, 1985: Friday 5 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": "1985-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-05", "confidence": "determinate" } ], "quote": "In Soweto, Caitrī Pūrṇimā 1985 falls on Friday 5 April. Pūrṇimā runs from 17:19 on Thu 4 Apr to 13:32 on Fri 5 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-04-08", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12195, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-04-08T02:43:40+02:00", "utc": "1985-04-08T00:43:40Z", "ms": 481769020251.09094 }, "end": { "local": "1985-04-08T23:49:52+02:00", "utc": "1985-04-08T21:49:52Z", "ms": 481844992103.4307 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-08T02:43:40+02:00", "utc": "1985-04-08T00:43:40Z", "ms": 481769020251.09094 }, "end": { "local": "1985-04-08T23:49:52+02:00", "utc": "1985-04-08T21:49:52Z", "ms": 481844992103.4307 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-04-07", "window": { "start": { "local": "1985-04-07T19:39:51+02:00", "utc": "1985-04-07T17:39:51Z", "ms": 481743590924.0452 }, "end": { "local": "1985-04-07T19:39:51+02:00", "utc": "1985-04-07T17:39:51Z", "ms": 481743590924.0452 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-04-08", "window": { "start": { "local": "1985-04-08T20:26:37+02:00", "utc": "1985-04-08T18:26:37Z", "ms": 481832796700.80994 }, "end": { "local": "1985-04-08T20:26:37+02:00", "utc": "1985-04-08T18:26:37Z", "ms": 481832796700.80994 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:44 on Mon 8 Apr to 23:50 on Mon 8 Apr.", "fact": "1985-04-08T00:43:40Z → 1985-04-08T21:49:52Z" }, { "step": "kaala", "text": "Moonrise is at 19:40 on the 7th and 20:27 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 7th and is on the 8th.", "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 12195 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Monday 8 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": "1985-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-08", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Monday 8 April. Caturthī runs from 02:44 on Mon 8 Apr to 23:50 on Mon 8 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-04-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40273, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1985-04-13T17:34:50+02:00", "utc": "1985-04-13T15:34:50Z", "ms": 482254489869.5361 }, "end": { "local": "1985-05-14T14:30:56+02:00", "utc": "1985-05-14T12:30:56Z", "ms": 484921856009.2297 } }, "span": { "of": "transit", "start": { "local": "1985-04-13T17:34:50+02:00", "utc": "1985-04-13T15:34:50Z", "ms": 482254489869.5361 }, "end": { "local": "1985-04-13T17:34:50+02:00", "utc": "1985-04-13T15:34:50Z", "ms": 482254489869.5361 } }, "kaala": "day", "days": [ { "local_date": "1985-04-12", "window": { "start": { "local": "1985-04-12T06:23:08+02:00", "utc": "1985-04-12T04:23:08Z", "ms": 482127787885.88824 }, "end": { "local": "1985-04-13T06:23:36+02:00", "utc": "1985-04-13T04:23:36Z", "ms": 482214216446.8442 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1985-04-13", "window": { "start": { "local": "1985-04-13T06:23:36+02:00", "utc": "1985-04-13T04:23:36Z", "ms": 482214216446.8442 }, "end": { "local": "1985-04-14T06:24:05+02:00", "utc": "1985-04-14T04:24:05Z", "ms": 482300645133.7783 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 17:35 on Sat 13 Apr.", "fact": "1985-04-13T15:34:50Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:23 on the 12th, and from 06:24 on the 13th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 40273 s" }, { "step": "ruling", "text": "Vaiśākhī, Soweto, 1985: Saturday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1985-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1985-04-13", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Soweto, Vaiśākhī 1985 falls on Saturday 13 April. The Sun enters Meṣa at 17:35 on Sat 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-04-15", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30879, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-04-14T20:13:21+02:00", "utc": "1985-04-14T18:13:21Z", "ms": 482350400997.5843 }, "end": { "local": "1985-04-15T21:50:24+02:00", "utc": "1985-04-15T19:50:24Z", "ms": 482442623766.8975 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-14T20:13:21+02:00", "utc": "1985-04-14T18:13:21Z", "ms": 482350400997.5843 }, "end": { "local": "1985-04-15T21:50:24+02:00", "utc": "1985-04-15T19:50:24Z", "ms": 482442623766.8975 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-04-15", "window": { "start": { "local": "1985-04-15T06:24:34+02:00", "utc": "1985-04-15T04:24:34Z", "ms": 482387073951.74963 }, "end": { "local": "1985-04-15T06:24:34+02:00", "utc": "1985-04-15T04:24:34Z", "ms": 482387073951.74963 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-04-16", "window": { "start": { "local": "1985-04-16T06:25:03+02:00", "utc": "1985-04-16T04:25:03Z", "ms": 482473502904.8067 }, "end": { "local": "1985-04-16T06:25:03+02:00", "utc": "1985-04-16T04:25:03Z", "ms": 482473502904.8067 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:13 on Sun 14 Apr to 21:50 on Mon 15 Apr.", "fact": "1985-04-14T18:13:21Z → 1985-04-15T19:50:24Z" }, { "step": "kaala", "text": "Sunrise is at 06:25 on the 15th and 06:25 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30879 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Soweto, 1985: Monday 15 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": "1985-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-15", "confidence": "determinate" } ], "quote": "In Soweto, Varūthinī Ekādaśī 1985 falls on Monday 15 April. Ekādaśī runs from 20:13 on Sun 14 Apr to 21:50 on Mon 15 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-04-17", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15636, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-04-16T23:52:32+02:00", "utc": "1985-04-16T21:52:32Z", "ms": 482536351897.6693 }, "end": { "local": "1985-04-18T02:12:55+02:00", "utc": "1985-04-18T00:12:55Z", "ms": 482631175010.9819 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-16T23:52:32+02:00", "utc": "1985-04-16T21:52:32Z", "ms": 482536351897.6693 }, "end": { "local": "1985-04-18T02:12:55+02:00", "utc": "1985-04-18T00:12:55Z", "ms": 482631175010.9819 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-04-16", "window": { "start": { "local": "1985-04-16T17:51:23+02:00", "utc": "1985-04-16T15:51:23Z", "ms": 482514682897.6806 }, "end": { "local": "1985-04-16T19:31:56+02:00", "utc": "1985-04-16T17:31:56Z", "ms": 482520716110.798 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1985-04-17", "window": { "start": { "local": "1985-04-17T17:50:26+02:00", "utc": "1985-04-17T15:50:26Z", "ms": 482601026033.5378 }, "end": { "local": "1985-04-17T19:31:11+02:00", "utc": "1985-04-17T17:31:11Z", "ms": 482607070726.0962 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:53 on Tue 16 Apr to 02:13 on Thu 18 Apr.", "fact": "1985-04-16T21:52:32Z → 1985-04-18T00:12:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:32 on the 16th, 17:50–19:31 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 101 minutes on the 16th and 101 of 101 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15636 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Wednesday 17 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": "1985-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-17", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Wednesday 17 April. Trayodaśī runs from 23:53 on Tue 16 Apr to 02:13 on Thu 18 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-04-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-04-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6041, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-04-18T02:12:55+02:00", "utc": "1985-04-18T00:12:55Z", "ms": 482631175010.9819 }, "end": { "local": "1985-04-19T04:44:52+02:00", "utc": "1985-04-19T02:44:52Z", "ms": 482726692438.7959 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-18T02:12:55+02:00", "utc": "1985-04-18T00:12:55Z", "ms": 482631175010.9819 }, "end": { "local": "1985-04-19T04:44:52+02:00", "utc": "1985-04-19T02:44:52Z", "ms": 482726692438.7959 } }, "kaala": "nishita", "days": [ { "local_date": "1985-04-17", "window": { "start": { "local": "1985-04-17T23:44:14+02:00", "utc": "1985-04-17T21:44:14Z", "ms": 482622253630.6318 }, "end": { "local": "1985-04-18T00:32:14+02:00", "utc": "1985-04-17T22:32:14Z", "ms": 482625133630.6318 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-18", "window": { "start": { "local": "1985-04-18T23:44:00+02:00", "utc": "1985-04-18T21:44:00Z", "ms": 482708640209.39545 }, "end": { "local": "1985-04-19T00:32:00+02:00", "utc": "1985-04-18T22:32:00Z", "ms": 482711520209.39545 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:13 on Thu 18 Apr to 04:45 on Fri 19 Apr.", "fact": "1985-04-18T00:12:55Z → 1985-04-19T02:44:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:44–00:32 on the 17th, 23:44–00:32 on the 18th.", "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 17th and 48 of 48 on the 18th.", "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 6041 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Thursday 18 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": "1985-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-18", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Thursday 18 April. Caturdaśī runs from 02:13 on Thu 18 Apr to 04:45 on Fri 19 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-04-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11176, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-04-22T12:25:43+02:00", "utc": "1985-04-22T10:25:43Z", "ms": 483013543238.6597 }, "end": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-22T12:25:43+02:00", "utc": "1985-04-22T10:25:43Z", "ms": 483013543238.6597 }, "end": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-04-22", "window": { "start": { "local": "1985-04-22T17:45:52+02:00", "utc": "1985-04-22T15:45:52Z", "ms": 483032751868.5976 }, "end": { "local": "1985-04-22T19:27:33+02:00", "utc": "1985-04-22T17:27:33Z", "ms": 483038852887.4341 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1985-04-23", "window": { "start": { "local": "1985-04-23T17:44:59+02:00", "utc": "1985-04-23T15:44:59Z", "ms": 483119099215.36206 }, "end": { "local": "1985-04-23T19:26:51+02:00", "utc": "1985-04-23T17:26:51Z", "ms": 483125211264.44366 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:26 on Mon 22 Apr to 14:39 on Tue 23 Apr.", "fact": "1985-04-22T10:25:43Z → 1985-04-23T12:38:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:46–19:28 on the 22nd, 17:45–19:27 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 102 of 102 minutes on the 22nd and 0 of 102 on the 23rd.", "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 11176 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Soweto, 1985: Monday 22 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": "1985-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-22", "confidence": "determinate" } ], "quote": "In Soweto, Paraśurāma Jayantī 1985 falls on Monday 22 April. Tṛtīyā runs from 12:26 on Mon 22 Apr to 14:39 on Tue 23 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7906, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-04-22T12:25:43+02:00", "utc": "1985-04-22T10:25:43Z", "ms": 483013543238.6597 }, "end": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-22T12:25:43+02:00", "utc": "1985-04-22T10:25:43Z", "ms": 483013543238.6597 }, "end": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 } }, "kaala": "purvahna", "days": [ { "local_date": "1985-04-22", "window": { "start": { "local": "1985-04-22T06:28:00+02:00", "utc": "1985-04-22T04:28:00Z", "ms": 482992079572.6391 }, "end": { "local": "1985-04-22T10:13:57+02:00", "utc": "1985-04-22T08:13:57Z", "ms": 483005637004.62524 } }, "covered_min": 0, "window_min": 226, "qualifies": false }, { "local_date": "1985-04-23", "window": { "start": { "local": "1985-04-23T06:28:30+02:00", "utc": "1985-04-23T04:28:30Z", "ms": 483078509509.87115 }, "end": { "local": "1985-04-23T10:13:59+02:00", "utc": "1985-04-23T08:13:59Z", "ms": 483092039411.7015 } }, "covered_min": 225, "window_min": 225, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:26 on Mon 22 Apr to 14:39 on Tue 23 Apr.", "fact": "1985-04-22T10:25:43Z → 1985-04-23T12:38:43Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:28–10:14 on the 22nd, 06:28–10:14 on the 23rd.", "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 226 minutes on the 22nd and 225 of 225 on the 23rd.", "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 7906 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Soweto, 1985: Tuesday 23 April.", "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": "1985-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-23", "confidence": "determinate" } ], "quote": "In Soweto, Akṣaya Tṛtīyā 1985 falls on Tuesday 23 April. Tṛtīyā runs from 12:26 on Mon 22 Apr to 14:39 on Tue 23 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-04-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7678, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 }, "end": { "local": "1985-04-24T16:29:23+02:00", "utc": "1985-04-24T14:29:23Z", "ms": 483200962791.5648 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-23T14:38:43+02:00", "utc": "1985-04-23T12:38:43Z", "ms": 483107922819.623 }, "end": { "local": "1985-04-24T16:29:23+02:00", "utc": "1985-04-24T14:29:23Z", "ms": 483200962791.5648 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-23", "window": { "start": { "local": "1985-04-23T11:42:44+02:00", "utc": "1985-04-23T09:42:44Z", "ms": 483097364362.6166 }, "end": { "local": "1985-04-23T12:30:44+02:00", "utc": "1985-04-23T10:30:44Z", "ms": 483100244362.6166 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-24", "window": { "start": { "local": "1985-04-24T11:42:33+02:00", "utc": "1985-04-24T09:42:33Z", "ms": 483183753460.31177 }, "end": { "local": "1985-04-24T12:30:33+02:00", "utc": "1985-04-24T10:30:33Z", "ms": 483186633460.31177 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:39 on Tue 23 Apr to 16:29 on Wed 24 Apr.", "fact": "1985-04-23T12:38:43Z → 1985-04-24T14:29:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 23rd, 11:43–12:31 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 7678 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Wednesday 24 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": "1985-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-24", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Wednesday 24 April. Caturthī runs from 14:39 on Tue 23 Apr to 16:29 on Wed 24 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-04-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14329, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-04-24T16:29:23+02:00", "utc": "1985-04-24T14:29:23Z", "ms": 483200962791.5648 }, "end": { "local": "1985-04-25T17:50:26+02:00", "utc": "1985-04-25T15:50:26Z", "ms": 483292225837.8218 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-24T16:29:23+02:00", "utc": "1985-04-24T14:29:23Z", "ms": 483200962791.5648 }, "end": { "local": "1985-04-25T17:50:26+02:00", "utc": "1985-04-25T15:50:26Z", "ms": 483292225837.8218 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-24", "window": { "start": { "local": "1985-04-24T11:42:33+02:00", "utc": "1985-04-24T09:42:33Z", "ms": 483183753460.31177 }, "end": { "local": "1985-04-24T12:30:33+02:00", "utc": "1985-04-24T10:30:33Z", "ms": 483186633460.31177 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-25", "window": { "start": { "local": "1985-04-25T11:42:23+02:00", "utc": "1985-04-25T09:42:23Z", "ms": 483270143022.36694 }, "end": { "local": "1985-04-25T12:30:23+02:00", "utc": "1985-04-25T10:30:23Z", "ms": 483273023022.36694 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 16:29 on Wed 24 Apr to 17:50 on Thu 25 Apr.", "fact": "1985-04-24T14:29:23Z → 1985-04-25T15:50:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 24th, 11:42–12:30 on the 25th.", "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 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14329 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Soweto, 1985: Thursday 25 April.", "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": "1985-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-25", "confidence": "determinate" } ], "quote": "In Soweto, Śaṅkara Jayantī 1985 falls on Thursday 25 April. Pañcamī runs from 16:29 on Wed 24 Apr to 17:50 on Thu 25 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21910, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-04-26T18:35:23+02:00", "utc": "1985-04-26T16:35:23Z", "ms": 483381323396.0281 }, "end": { "local": "1985-04-27T18:39:24+02:00", "utc": "1985-04-27T16:39:24Z", "ms": 483467964276.53 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-26T18:35:23+02:00", "utc": "1985-04-26T16:35:23Z", "ms": 483381323396.0281 }, "end": { "local": "1985-04-27T18:39:24+02:00", "utc": "1985-04-27T16:39:24Z", "ms": 483467964276.53 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-04-26", "window": { "start": { "local": "1985-04-26T11:42:13+02:00", "utc": "1985-04-26T09:42:13Z", "ms": 483356533057.1682 }, "end": { "local": "1985-04-26T12:30:13+02:00", "utc": "1985-04-26T10:30:13Z", "ms": 483359413057.1682 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-04-27", "window": { "start": { "local": "1985-04-27T11:42:04+02:00", "utc": "1985-04-27T09:42:04Z", "ms": 483442923572.92004 }, "end": { "local": "1985-04-27T12:30:04+02:00", "utc": "1985-04-27T10:30:04Z", "ms": 483445803572.92004 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 18:35 on Fri 26 Apr to 18:39 on Sat 27 Apr.", "fact": "1985-04-26T16:35:23Z → 1985-04-27T16:39:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 26th, 11:42–12:30 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21910 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Soweto, 1985: Saturday 27 April.", "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": "1985-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-04-27", "confidence": "determinate" } ], "quote": "In Soweto, Gaṅgotpatti (Ganga Saptami) 1985 falls on Saturday 27 April. Saptamī runs from 18:35 on Fri 26 Apr to 18:39 on Sat 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-05-01", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19283, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-04-30T14:33:20+02:00", "utc": "1985-04-30T12:33:20Z", "ms": 483712400186.1778 }, "end": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-04-30T14:33:20+02:00", "utc": "1985-04-30T12:33:20Z", "ms": 483712400186.1778 }, "end": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-04-30", "window": { "start": { "local": "1985-04-30T06:32:03+02:00", "utc": "1985-04-30T04:32:03Z", "ms": 483683522681.7841 }, "end": { "local": "1985-04-30T06:32:03+02:00", "utc": "1985-04-30T04:32:03Z", "ms": 483683522681.7841 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-05-01", "window": { "start": { "local": "1985-05-01T06:32:34+02:00", "utc": "1985-05-01T04:32:34Z", "ms": 483769953602.08545 }, "end": { "local": "1985-05-01T06:32:34+02:00", "utc": "1985-05-01T04:32:34Z", "ms": 483769953602.08545 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:33 on Tue 30 Apr to 11:54 on Wed 1 May.", "fact": "1985-04-30T12:33:20Z → 1985-05-01T09:53:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:32 on the 30th and 06:33 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 19283 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Soweto, 1985: Wednesday 1 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": "1985-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-01", "confidence": "determinate" } ], "quote": "In Soweto, Mohinī Ekādaśī 1985 falls on Wednesday 1 May. Ekādaśī runs from 14:33 on Tue 30 Apr to 11:54 on Wed 1 May and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-05-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 746, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 }, "end": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 }, "end": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-01", "window": { "start": { "local": "1985-05-01T11:41:31+02:00", "utc": "1985-05-01T09:41:31Z", "ms": 483788490610.94556 }, "end": { "local": "1985-05-01T12:29:31+02:00", "utc": "1985-05-01T10:29:31Z", "ms": 483791370610.94556 } }, "covered_min": 36, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-02", "window": { "start": { "local": "1985-05-02T11:41:24+02:00", "utc": "1985-05-02T09:41:24Z", "ms": 483874883658.25586 }, "end": { "local": "1985-05-02T12:29:24+02:00", "utc": "1985-05-02T10:29:24Z", "ms": 483877763658.25586 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:54 on Wed 1 May to 08:46 on Thu 2 May.", "fact": "1985-05-01T09:53:57Z → 1985-05-02T06:45:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 1st, 11:41–12:29 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 36 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "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 746 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Soweto, 1985: Wednesday 1 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": "1985-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-01", "confidence": "determinate" } ], "quote": "In Soweto, Paraśurāma Dvādaśī 1985 falls on Wednesday 1 May. Dvādaśī runs from 11:54 on Wed 1 May to 08:46 on Thu 2 May and covers 36 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 746, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 }, "end": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-01T11:53:57+02:00", "utc": "1985-05-01T09:53:57Z", "ms": 483789236808.91895 }, "end": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-01", "window": { "start": { "local": "1985-05-01T11:41:31+02:00", "utc": "1985-05-01T09:41:31Z", "ms": 483788490610.94556 }, "end": { "local": "1985-05-01T12:29:31+02:00", "utc": "1985-05-01T10:29:31Z", "ms": 483791370610.94556 } }, "covered_min": 36, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-02", "window": { "start": { "local": "1985-05-02T11:41:24+02:00", "utc": "1985-05-02T09:41:24Z", "ms": 483874883658.25586 }, "end": { "local": "1985-05-02T12:29:24+02:00", "utc": "1985-05-02T10:29:24Z", "ms": 483877763658.25586 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:54 on Wed 1 May to 08:46 on Thu 2 May.", "fact": "1985-05-01T09:53:57Z → 1985-05-02T06:45:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 1st, 11:41–12:29 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 36 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "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 746 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Soweto, 1985: Wednesday 1 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": "1985-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-01", "confidence": "determinate" } ], "quote": "In Soweto, Rukmiṇī Dvādaśī 1985 falls on Wednesday 1 May. Dvādaśī runs from 11:54 on Wed 1 May to 08:46 on Thu 2 May and covers 36 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-05-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31924, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 }, "end": { "local": "1985-05-03T05:16:36+02:00", "utc": "1985-05-03T03:16:36Z", "ms": 483938195917.9482 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-02T08:45:39+02:00", "utc": "1985-05-02T06:45:39Z", "ms": 483864339008.20496 }, "end": { "local": "1985-05-03T05:16:36+02:00", "utc": "1985-05-03T03:16:36Z", "ms": 483938195917.9482 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-05-02", "window": { "start": { "local": "1985-05-02T17:37:43+02:00", "utc": "1985-05-02T15:37:43Z", "ms": 483896262688.35175 }, "end": { "local": "1985-05-02T19:21:10+02:00", "utc": "1985-05-02T17:21:10Z", "ms": 483902469764.3425 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "1985-05-03", "window": { "start": { "local": "1985-05-03T17:36:59+02:00", "utc": "1985-05-03T15:36:59Z", "ms": 483982618722.23956 }, "end": { "local": "1985-05-03T19:20:36+02:00", "utc": "1985-05-03T17:20:36Z", "ms": 483988835824.775 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:46 on Thu 2 May to 05:17 on Fri 3 May.", "fact": "1985-05-02T06:45:39Z → 1985-05-03T03:16:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:38–19:21 on the 2nd, 17:37–19:21 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 103 of 103 minutes on the 2nd and 0 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 31924 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Thursday 2 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": "1985-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-02", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Thursday 2 May. Trayodaśī runs from 08:46 on Thu 2 May to 05:17 on Fri 3 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22513, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-05-03T05:16:36+02:00", "utc": "1985-05-03T03:16:36Z", "ms": 483938195917.9482 }, "end": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-03T05:16:36+02:00", "utc": "1985-05-03T03:16:36Z", "ms": 483938195917.9482 }, "end": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-05-02", "window": { "start": { "local": "1985-05-02T17:37:43+02:00", "utc": "1985-05-02T15:37:43Z", "ms": 483896262688.35175 }, "end": { "local": "1985-05-02T19:21:10+02:00", "utc": "1985-05-02T17:21:10Z", "ms": 483902469764.3425 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "1985-05-03", "window": { "start": { "local": "1985-05-03T17:36:59+02:00", "utc": "1985-05-03T15:36:59Z", "ms": 483982618722.23956 }, "end": { "local": "1985-05-03T19:20:36+02:00", "utc": "1985-05-03T17:20:36Z", "ms": 483988835824.775 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:17 on Fri 3 May to 01:36 on Sat 4 May.", "fact": "1985-05-03T03:16:36Z → 1985-05-03T23:35:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:38–19:21 on the 2nd, 17:37–19:21 on the 3rd.", "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 103 minutes on the 2nd and 104 of 104 on the 3rd.", "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 22513 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Soweto, 1985: Friday 3 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": "1985-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-03", "confidence": "determinate" } ], "quote": "In Soweto, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1985 falls on Friday 3 May. Caturdaśī runs from 05:17 on Fri 3 May to 01:36 on Sat 4 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33818, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 }, "end": { "local": "1985-05-04T21:52:49+02:00", "utc": "1985-05-04T19:52:49Z", "ms": 484084369167.8304 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 }, "end": { "local": "1985-05-04T21:52:49+02:00", "utc": "1985-05-04T19:52:49Z", "ms": 484084369167.8304 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-03", "window": { "start": { "local": "1985-05-03T11:41:17+02:00", "utc": "1985-05-03T09:41:17Z", "ms": 483961277240.2612 }, "end": { "local": "1985-05-03T12:29:17+02:00", "utc": "1985-05-03T10:29:17Z", "ms": 483964157240.2612 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-05-04", "window": { "start": { "local": "1985-05-04T11:41:11+02:00", "utc": "1985-05-04T09:41:11Z", "ms": 484047671367.50183 }, "end": { "local": "1985-05-04T12:29:11+02:00", "utc": "1985-05-04T10:29:11Z", "ms": 484050551367.50183 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:36 on Sat 4 May to 21:53 on Sat 4 May.", "fact": "1985-05-03T23:35:49Z → 1985-05-04T19:52:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 3rd, 11:41–12:29 on the 4th.", "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 3rd and 48 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: unstated → only-day · margin 33818 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Soweto, 1985: Saturday 4 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": "1985-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-04", "confidence": "determinate" } ], "quote": "In Soweto, Buddha Pūrṇimā 1985 falls on Saturday 4 May. Pūrṇimā runs from 01:36 on Sat 4 May to 21:53 on Sat 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33818, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 }, "end": { "local": "1985-05-04T21:52:49+02:00", "utc": "1985-05-04T19:52:49Z", "ms": 484084369167.8304 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-04T01:35:49+02:00", "utc": "1985-05-03T23:35:49Z", "ms": 484011348939.81195 }, "end": { "local": "1985-05-04T21:52:49+02:00", "utc": "1985-05-04T19:52:49Z", "ms": 484084369167.8304 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-03", "window": { "start": { "local": "1985-05-03T11:41:17+02:00", "utc": "1985-05-03T09:41:17Z", "ms": 483961277240.2612 }, "end": { "local": "1985-05-03T12:29:17+02:00", "utc": "1985-05-03T10:29:17Z", "ms": 483964157240.2612 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-05-04", "window": { "start": { "local": "1985-05-04T11:41:11+02:00", "utc": "1985-05-04T09:41:11Z", "ms": 484047671367.50183 }, "end": { "local": "1985-05-04T12:29:11+02:00", "utc": "1985-05-04T10:29:11Z", "ms": 484050551367.50183 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:36 on Sat 4 May to 21:53 on Sat 4 May.", "fact": "1985-05-03T23:35:49Z → 1985-05-04T19:52:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 3rd, 11:41–12:29 on the 4th.", "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 3rd and 48 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: paraviddha → only-day · margin 33818 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Soweto, 1985: Saturday 4 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": "1985-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-04", "confidence": "determinate" } ], "quote": "In Soweto, Sampat Gaurī Vrata 1985 falls on Saturday 4 May. Pūrṇimā runs from 01:36 on Sat 4 May to 21:53 on Sat 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-05-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28413, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-05-07T12:06:34+02:00", "utc": "1985-05-07T10:06:34Z", "ms": 484308394318.61145 }, "end": { "local": "1985-05-08T09:48:41+02:00", "utc": "1985-05-08T07:48:41Z", "ms": 484386520928.3274 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-07T12:06:34+02:00", "utc": "1985-05-07T10:06:34Z", "ms": 484308394318.61145 }, "end": { "local": "1985-05-08T09:48:41+02:00", "utc": "1985-05-08T07:48:41Z", "ms": 484386520928.3274 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-05-07", "window": { "start": { "local": "1985-05-07T20:00:07+02:00", "utc": "1985-05-07T18:00:07Z", "ms": 484336807351.7055 }, "end": { "local": "1985-05-07T20:00:07+02:00", "utc": "1985-05-07T18:00:07Z", "ms": 484336807351.7055 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-05-08", "window": { "start": { "local": "1985-05-08T21:00:46+02:00", "utc": "1985-05-08T19:00:46Z", "ms": 484426845932.6213 }, "end": { "local": "1985-05-08T21:00:46+02:00", "utc": "1985-05-08T19:00:46Z", "ms": 484426845932.6213 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:07 on Tue 7 May to 09:49 on Wed 8 May.", "fact": "1985-05-07T10:06:34Z → 1985-05-08T07:48:41Z" }, { "step": "kaala", "text": "Moonrise is at 20:00 on the 7th and 21:01 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 7th and is not on the 8th.", "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 28413 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Tuesday 7 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": "1985-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-07", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Tuesday 7 May. Caturthī runs from 12:07 on Tue 7 May to 09:49 on Wed 8 May and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-05-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-05-15", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17027, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-05-14T11:23:11+02:00", "utc": "1985-05-14T09:23:11Z", "ms": 484910591407.382 }, "end": { "local": "1985-05-15T13:44:36+02:00", "utc": "1985-05-15T11:44:36Z", "ms": 485005475713.0198 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-14T11:23:11+02:00", "utc": "1985-05-14T09:23:11Z", "ms": 484910591407.382 }, "end": { "local": "1985-05-15T13:44:36+02:00", "utc": "1985-05-15T11:44:36Z", "ms": 485005475713.0198 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-05-14", "window": { "start": { "local": "1985-05-14T06:39:24+02:00", "utc": "1985-05-14T04:39:24Z", "ms": 484893563956.0773 }, "end": { "local": "1985-05-14T06:39:24+02:00", "utc": "1985-05-14T04:39:24Z", "ms": 484893563956.0773 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-05-15", "window": { "start": { "local": "1985-05-15T06:39:56+02:00", "utc": "1985-05-15T04:39:56Z", "ms": 484979995879.9891 }, "end": { "local": "1985-05-15T06:39:56+02:00", "utc": "1985-05-15T04:39:56Z", "ms": 484979995879.9891 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:23 on Tue 14 May to 13:45 on Wed 15 May.", "fact": "1985-05-14T09:23:11Z → 1985-05-15T11:44:36Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 14th and 06:40 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 14th and is on the 15th.", "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 17027 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Soweto, 1985: Wednesday 15 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": "1985-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-15", "confidence": "determinate" } ], "quote": "In Soweto, Aparā Ekādaśī 1985 falls on Wednesday 15 May. Ekādaśī runs from 11:23 on Tue 14 May to 13:45 on Wed 15 May and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-05-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-05-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-16", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1147, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-05-16T16:18:43+02:00", "utc": "1985-05-16T14:18:43Z", "ms": 485101122842.6898 }, "end": { "local": "1985-05-17T18:55:13+02:00", "utc": "1985-05-17T16:55:13Z", "ms": 485196912572.8854 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-16T16:18:43+02:00", "utc": "1985-05-16T14:18:43Z", "ms": 485101122842.6898 }, "end": { "local": "1985-05-17T18:55:13+02:00", "utc": "1985-05-17T16:55:13Z", "ms": 485196912572.8854 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-05-16", "window": { "start": { "local": "1985-05-16T17:29:04+02:00", "utc": "1985-05-16T15:29:04Z", "ms": 485105344298.35315 }, "end": { "local": "1985-05-16T19:14:40+02:00", "utc": "1985-05-16T17:14:40Z", "ms": 485111679676.4872 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1985-05-17", "window": { "start": { "local": "1985-05-17T17:28:36+02:00", "utc": "1985-05-17T15:28:36Z", "ms": 485191715851.2406 }, "end": { "local": "1985-05-17T19:14:19+02:00", "utc": "1985-05-17T17:14:19Z", "ms": 485198059260.6342 } }, "covered_min": 87, "window_min": 106, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:19 on Thu 16 May to 18:55 on Fri 17 May.", "fact": "1985-05-16T14:18:43Z → 1985-05-17T16:55:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:29–19:15 on the 16th, 17:29–19:14 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 16th and 87 of 106 on the 17th.", "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 1147 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Thursday 16 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": "1985-05-16", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-16", "confidence": "boundary" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Thursday 16 May. Trayodaśī runs from 16:19 on Thu 16 May to 18:55 on Fri 17 May and covers all of pradoṣa that evening. It also reaches the next evening for 87 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/soweto/festivals/1985/pradosha-vrata?on=1985-05-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-05-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8160, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-05-17T18:55:13+02:00", "utc": "1985-05-17T16:55:13Z", "ms": 485196912572.8854 }, "end": { "local": "1985-05-18T21:25:06+02:00", "utc": "1985-05-18T19:25:06Z", "ms": 485292305525.8321 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-17T18:55:13+02:00", "utc": "1985-05-17T16:55:13Z", "ms": 485196912572.8854 }, "end": { "local": "1985-05-18T21:25:06+02:00", "utc": "1985-05-18T19:25:06Z", "ms": 485292305525.8321 } }, "kaala": "nishita", "days": [ { "local_date": "1985-05-17", "window": { "start": { "local": "1985-05-17T23:41:04+02:00", "utc": "1985-05-17T21:41:04Z", "ms": 485214063636.4667 }, "end": { "local": "1985-05-18T00:29:04+02:00", "utc": "1985-05-17T22:29:04Z", "ms": 485216943636.4667 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-18", "window": { "start": { "local": "1985-05-18T23:41:06+02:00", "utc": "1985-05-18T21:41:06Z", "ms": 485300465865.18774 }, "end": { "local": "1985-05-19T00:29:06+02:00", "utc": "1985-05-18T22:29:06Z", "ms": 485303345865.18774 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:55 on Fri 17 May to 21:25 on Sat 18 May.", "fact": "1985-05-17T16:55:13Z → 1985-05-18T19:25:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:41–00:29 on the 17th, 23:41–00:29 on the 18th.", "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 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8160 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Friday 17 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": "1985-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-17", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Friday 17 May. Caturdaśī runs from 18:55 on Fri 17 May to 21:25 on Sat 18 May and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-05-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26627, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-05-22T03:10:54+02:00", "utc": "1985-05-22T01:10:54Z", "ms": 485572254127.79285 }, "end": { "local": "1985-05-23T04:17:23+02:00", "utc": "1985-05-23T02:17:23Z", "ms": 485662642857.15027 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-22T03:10:54+02:00", "utc": "1985-05-22T01:10:54Z", "ms": 485572254127.79285 }, "end": { "local": "1985-05-23T04:17:23+02:00", "utc": "1985-05-23T02:17:23Z", "ms": 485662642857.15027 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-22", "window": { "start": { "local": "1985-05-22T11:41:05+02:00", "utc": "1985-05-22T09:41:05Z", "ms": 485602864635.0845 }, "end": { "local": "1985-05-22T12:29:05+02:00", "utc": "1985-05-22T10:29:05Z", "ms": 485605744635.0845 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-23", "window": { "start": { "local": "1985-05-23T11:41:10+02:00", "utc": "1985-05-23T09:41:10Z", "ms": 485689269615.90906 }, "end": { "local": "1985-05-23T12:29:10+02:00", "utc": "1985-05-23T10:29:10Z", "ms": 485692149615.90906 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:11 on Wed 22 May to 04:17 on Thu 23 May.", "fact": "1985-05-22T01:10:54Z → 1985-05-23T02:17:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 22nd, 11:41–12:29 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26627 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Soweto, 1985: Wednesday 22 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": "1985-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-22", "confidence": "determinate" } ], "quote": "In Soweto, Rambhā Tṛtīyā 1985 falls on Wednesday 22 May. Tṛtīyā runs from 03:11 on Wed 22 May to 04:17 on Thu 23 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-05-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24389, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-05-23T04:17:23+02:00", "utc": "1985-05-23T02:17:23Z", "ms": 485662642857.15027 }, "end": { "local": "1985-05-24T04:54:47+02:00", "utc": "1985-05-24T02:54:47Z", "ms": 485751286588.2217 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-23T04:17:23+02:00", "utc": "1985-05-23T02:17:23Z", "ms": 485662642857.15027 }, "end": { "local": "1985-05-24T04:54:47+02:00", "utc": "1985-05-24T02:54:47Z", "ms": 485751286588.2217 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-23", "window": { "start": { "local": "1985-05-23T11:41:10+02:00", "utc": "1985-05-23T09:41:10Z", "ms": 485689269615.90906 }, "end": { "local": "1985-05-23T12:29:10+02:00", "utc": "1985-05-23T10:29:10Z", "ms": 485692149615.90906 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-24", "window": { "start": { "local": "1985-05-24T11:41:15+02:00", "utc": "1985-05-24T09:41:15Z", "ms": 485775675102.5211 }, "end": { "local": "1985-05-24T12:29:15+02:00", "utc": "1985-05-24T10:29:15Z", "ms": 485778555102.5211 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:17 on Thu 23 May to 04:55 on Fri 24 May.", "fact": "1985-05-23T02:17:23Z → 1985-05-24T02:54:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 23rd, 11:41–12:29 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 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24389 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Thursday 23 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": "1985-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-23", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Thursday 23 May. Caturthī runs from 04:17 on Thu 23 May to 04:55 on Fri 24 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-05-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24008, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-05-25T05:01:13+02:00", "utc": "1985-05-25T03:01:13Z", "ms": 485838073389.4074 }, "end": { "local": "1985-05-26T04:35:28+02:00", "utc": "1985-05-26T02:35:28Z", "ms": 485922928225.0937 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-25T05:01:13+02:00", "utc": "1985-05-25T03:01:13Z", "ms": 485838073389.4074 }, "end": { "local": "1985-05-26T04:35:28+02:00", "utc": "1985-05-26T02:35:28Z", "ms": 485922928225.0937 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-25", "window": { "start": { "local": "1985-05-25T11:41:21+02:00", "utc": "1985-05-25T09:41:21Z", "ms": 485862081081.46594 }, "end": { "local": "1985-05-25T12:29:21+02:00", "utc": "1985-05-25T10:29:21Z", "ms": 485864961081.46594 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-26", "window": { "start": { "local": "1985-05-26T11:41:28+02:00", "utc": "1985-05-26T09:41:28Z", "ms": 485948487538.9507 }, "end": { "local": "1985-05-26T12:29:28+02:00", "utc": "1985-05-26T10:29:28Z", "ms": 485951367538.9507 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:01 on Sat 25 May to 04:35 on Sun 26 May.", "fact": "1985-05-25T03:01:13Z → 1985-05-26T02:35:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 25th, 11:41–12:29 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24008 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Soweto, 1985: Saturday 25 May.", "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": "1985-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-25", "confidence": "determinate" } ], "quote": "In Soweto, Araṇya Gaurī Vrata 1985 falls on Saturday 25 May. Ṣaṣṭhī runs from 05:01 on Sat 25 May to 04:35 on Sun 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24008, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-05-25T05:01:13+02:00", "utc": "1985-05-25T03:01:13Z", "ms": 485838073389.4074 }, "end": { "local": "1985-05-26T04:35:28+02:00", "utc": "1985-05-26T02:35:28Z", "ms": 485922928225.0937 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-25T05:01:13+02:00", "utc": "1985-05-25T03:01:13Z", "ms": 485838073389.4074 }, "end": { "local": "1985-05-26T04:35:28+02:00", "utc": "1985-05-26T02:35:28Z", "ms": 485922928225.0937 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-25", "window": { "start": { "local": "1985-05-25T11:41:21+02:00", "utc": "1985-05-25T09:41:21Z", "ms": 485862081081.46594 }, "end": { "local": "1985-05-25T12:29:21+02:00", "utc": "1985-05-25T10:29:21Z", "ms": 485864961081.46594 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-05-26", "window": { "start": { "local": "1985-05-26T11:41:28+02:00", "utc": "1985-05-26T09:41:28Z", "ms": 485948487538.9507 }, "end": { "local": "1985-05-26T12:29:28+02:00", "utc": "1985-05-26T10:29:28Z", "ms": 485951367538.9507 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:01 on Sat 25 May to 04:35 on Sun 26 May.", "fact": "1985-05-25T03:01:13Z → 1985-05-26T02:35:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 25th, 11:41–12:29 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24008 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Soweto, 1985: Saturday 25 May.", "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": "1985-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-25", "confidence": "determinate" } ], "quote": "In Soweto, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1985 falls on Saturday 25 May. Ṣaṣṭhī runs from 05:01 on Sat 25 May to 04:35 on Sun 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-05-30", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32979, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-05-29T21:37:59+02:00", "utc": "1985-05-29T19:37:59Z", "ms": 486243479018.2742 }, "end": { "local": "1985-05-30T18:47:31+02:00", "utc": "1985-05-30T16:47:31Z", "ms": 486319651462.34796 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-29T21:37:59+02:00", "utc": "1985-05-29T19:37:59Z", "ms": 486243479018.2742 }, "end": { "local": "1985-05-30T18:47:31+02:00", "utc": "1985-05-30T16:47:31Z", "ms": 486319651462.34796 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-05-30", "window": { "start": { "local": "1985-05-30T06:47:38+02:00", "utc": "1985-05-30T04:47:38Z", "ms": 486276458241.2059 }, "end": { "local": "1985-05-30T06:47:38+02:00", "utc": "1985-05-30T04:47:38Z", "ms": 486276458241.2059 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-05-31", "window": { "start": { "local": "1985-05-31T06:48:07+02:00", "utc": "1985-05-31T04:48:07Z", "ms": 486362886760.61194 }, "end": { "local": "1985-05-31T06:48:07+02:00", "utc": "1985-05-31T04:48:07Z", "ms": 486362886760.61194 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:38 on Wed 29 May to 18:48 on Thu 30 May.", "fact": "1985-05-29T19:37:59Z → 1985-05-30T16:47:31Z" }, { "step": "kaala", "text": "Sunrise is at 06:48 on the 30th and 06:48 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 32979 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Soweto, 1985: Thursday 30 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": "1985-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-30", "confidence": "determinate" } ], "quote": "In Soweto, Nirjalā Ekādaśī 1985 falls on Thursday 30 May. Ekādaśī runs from 21:38 on Wed 29 May to 18:48 on Thu 30 May and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-05-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11407, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-05-30T18:47:31+02:00", "utc": "1985-05-30T16:47:31Z", "ms": 486319651462.34796 }, "end": { "local": "1985-05-31T15:40:14+02:00", "utc": "1985-05-31T13:40:14Z", "ms": 486394813693.17773 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-30T18:47:31+02:00", "utc": "1985-05-30T16:47:31Z", "ms": 486319651462.34796 }, "end": { "local": "1985-05-31T15:40:14+02:00", "utc": "1985-05-31T13:40:14Z", "ms": 486394813693.17773 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-05-30", "window": { "start": { "local": "1985-05-30T11:41:58+02:00", "utc": "1985-05-30T09:41:58Z", "ms": 486294117878.67944 }, "end": { "local": "1985-05-30T12:29:58+02:00", "utc": "1985-05-30T10:29:58Z", "ms": 486296997878.67944 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-05-31", "window": { "start": { "local": "1985-05-31T11:42:07+02:00", "utc": "1985-05-31T09:42:07Z", "ms": 486380526525.0991 }, "end": { "local": "1985-05-31T12:30:07+02:00", "utc": "1985-05-31T10:30:07Z", "ms": 486383406525.0991 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:48 on Thu 30 May to 15:40 on Fri 31 May.", "fact": "1985-05-30T16:47:31Z → 1985-05-31T13:40:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 30th, 11:42–12:30 on the 31st.", "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 30th and 48 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 11407 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Soweto, 1985: Friday 31 May.", "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": "1985-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-31", "confidence": "determinate" } ], "quote": "In Soweto, Śrī Rāma Dvādaśī 1985 falls on Friday 31 May. Dvādaśī runs from 18:48 on Thu 30 May to 15:40 on Fri 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-05-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6233, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-05-31T15:40:14+02:00", "utc": "1985-05-31T13:40:14Z", "ms": 486394813693.17773 }, "end": { "local": "1985-06-01T12:22:58+02:00", "utc": "1985-06-01T10:22:58Z", "ms": 486469378301.8586 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-05-31T15:40:14+02:00", "utc": "1985-05-31T13:40:14Z", "ms": 486394813693.17773 }, "end": { "local": "1985-06-01T12:22:58+02:00", "utc": "1985-06-01T10:22:58Z", "ms": 486469378301.8586 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-05-31", "window": { "start": { "local": "1985-05-31T17:24:06+02:00", "utc": "1985-05-31T15:24:06Z", "ms": 486401046289.58624 }, "end": { "local": "1985-05-31T19:11:22+02:00", "utc": "1985-05-31T17:11:22Z", "ms": 486407482096.76953 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1985-06-01", "window": { "start": { "local": "1985-06-01T17:23:56+02:00", "utc": "1985-06-01T15:23:56Z", "ms": 486487436299.2662 }, "end": { "local": "1985-06-01T19:11:17+02:00", "utc": "1985-06-01T17:11:17Z", "ms": 486493877121.65106 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:40 on Fri 31 May to 12:23 on Sat 1 Jun.", "fact": "1985-05-31T13:40:14Z → 1985-06-01T10:22:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:24–19:11 on the 31st, 17:24–19:11 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 31st and 0 of 107 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6233 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Friday 31 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": "1985-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-05-31", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Friday 31 May. Trayodaśī runs from 15:40 on Fri 31 May to 12:23 on Sat 1 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-05-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30015, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-06-02T09:03:33+02:00", "utc": "1985-06-02T07:03:33Z", "ms": 486543812868.0705 }, "end": { "local": "1985-06-03T05:50:26+02:00", "utc": "1985-06-03T03:50:26Z", "ms": 486618626414.26984 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-02T09:03:33+02:00", "utc": "1985-06-02T07:03:33Z", "ms": 486543812868.0705 }, "end": { "local": "1985-06-03T05:50:26+02:00", "utc": "1985-06-03T03:50:26Z", "ms": 486618626414.26984 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-06-02", "window": { "start": { "local": "1985-06-02T17:23:48+02:00", "utc": "1985-06-02T15:23:48Z", "ms": 486573827544.4793 }, "end": { "local": "1985-06-02T19:11:13+02:00", "utc": "1985-06-02T17:11:13Z", "ms": 486580273153.2165 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1985-06-03", "window": { "start": { "local": "1985-06-03T17:23:40+02:00", "utc": "1985-06-03T15:23:40Z", "ms": 486660220024.045 }, "end": { "local": "1985-06-03T19:11:10+02:00", "utc": "1985-06-03T17:11:10Z", "ms": 486666670187.4614 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:04 on Sun 2 Jun to 05:50 on Mon 3 Jun.", "fact": "1985-06-02T07:03:33Z → 1985-06-03T03:50:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:24–19:11 on the 2nd, 17:24–19:11 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 107 of 107 minutes on the 2nd and 0 of 108 on the 3rd.", "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 30015 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Soweto, 1985: Sunday 2 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": "1985-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-02", "confidence": "determinate" } ], "quote": "In Soweto, Vaṭa Sāvitrī Vrata 1985 falls on Sunday 2 June. Pūrṇimā runs from 09:04 on Sun 2 Jun to 05:50 on Mon 3 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-06-06", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 459, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-06-05T22:17:49+02:00", "utc": "1985-06-05T20:17:49Z", "ms": 486850668597.4408 }, "end": { "local": "1985-06-06T20:56:54+02:00", "utc": "1985-06-06T18:56:54Z", "ms": 486932213625.16205 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-05T22:17:49+02:00", "utc": "1985-06-05T20:17:49Z", "ms": 486850668597.4408 }, "end": { "local": "1985-06-06T20:56:54+02:00", "utc": "1985-06-06T18:56:54Z", "ms": 486932213625.16205 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-06-05", "window": { "start": { "local": "1985-06-05T19:45:19+02:00", "utc": "1985-06-05T17:45:19Z", "ms": 486841519364.3376 }, "end": { "local": "1985-06-05T19:45:19+02:00", "utc": "1985-06-05T17:45:19Z", "ms": 486841519364.3376 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-06-06", "window": { "start": { "local": "1985-06-06T20:49:15+02:00", "utc": "1985-06-06T18:49:15Z", "ms": 486931754723.74695 }, "end": { "local": "1985-06-06T20:49:15+02:00", "utc": "1985-06-06T18:49:15Z", "ms": 486931754723.74695 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:18 on Wed 5 Jun to 20:57 on Thu 6 Jun.", "fact": "1985-06-05T20:17:49Z → 1985-06-06T18:56:54Z" }, { "step": "kaala", "text": "Moonrise is at 19:45 on the 5th and 20:49 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 5th and is on the 6th.", "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 459 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Thursday 6 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": "1985-06-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-06", "confidence": "boundary" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Thursday 6 June. Caturthī runs from 22:18 on Wed 5 Jun to 20:57 on Thu 6 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-06-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-06-13", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1443, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-06-13T03:55:14+02:00", "utc": "1985-06-13T01:55:14Z", "ms": 487475714043.5087 }, "end": { "local": "1985-06-14T06:29:46+02:00", "utc": "1985-06-14T04:29:46Z", "ms": 487571386228.62463 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-13T03:55:14+02:00", "utc": "1985-06-13T01:55:14Z", "ms": 487475714043.5087 }, "end": { "local": "1985-06-14T06:29:46+02:00", "utc": "1985-06-14T04:29:46Z", "ms": 487571386228.62463 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-06-13", "window": { "start": { "local": "1985-06-13T06:53:29+02:00", "utc": "1985-06-13T04:53:29Z", "ms": 487486409166.1831 }, "end": { "local": "1985-06-13T06:53:29+02:00", "utc": "1985-06-13T04:53:29Z", "ms": 487486409166.1831 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-06-14", "window": { "start": { "local": "1985-06-14T06:53:49+02:00", "utc": "1985-06-14T04:53:49Z", "ms": 487572829327.3804 }, "end": { "local": "1985-06-14T06:53:49+02:00", "utc": "1985-06-14T04:53:49Z", "ms": 487572829327.3804 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:55 on Thu 13 Jun to 06:30 on Fri 14 Jun.", "fact": "1985-06-13T01:55:14Z → 1985-06-14T04:29:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:53 on the 13th and 06:54 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "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 1443 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Soweto, 1985: Thursday 13 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": "1985-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-13", "confidence": "determinate" } ], "quote": "In Soweto, Yoginī Ekādaśī 1985 falls on Thursday 13 June. Ekādaśī runs from 03:55 on Thu 13 Jun to 06:30 on Fri 14 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-06-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22815, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-06-15T08:56:01+02:00", "utc": "1985-06-15T06:56:01Z", "ms": 487666561175.03217 }, "end": { "local": "1985-06-16T11:03:37+02:00", "utc": "1985-06-16T09:03:37Z", "ms": 487760616508.1957 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-15T08:56:01+02:00", "utc": "1985-06-15T06:56:01Z", "ms": 487666561175.03217 }, "end": { "local": "1985-06-16T11:03:37+02:00", "utc": "1985-06-16T09:03:37Z", "ms": 487760616508.1957 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-06-15", "window": { "start": { "local": "1985-06-15T17:23:44+02:00", "utc": "1985-06-15T15:23:44Z", "ms": 487697023848.2986 }, "end": { "local": "1985-06-15T19:11:50+02:00", "utc": "1985-06-15T17:11:50Z", "ms": 487703509628.19495 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1985-06-16", "window": { "start": { "local": "1985-06-16T17:23:52+02:00", "utc": "1985-06-16T15:23:52Z", "ms": 487783431631.14734 }, "end": { "local": "1985-06-16T19:11:59+02:00", "utc": "1985-06-16T17:11:59Z", "ms": 487789918726.4977 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:56 on Sat 15 Jun to 11:04 on Sun 16 Jun.", "fact": "1985-06-15T06:56:01Z → 1985-06-16T09:03:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:24–19:12 on the 15th, 17:24–19:12 on the 16th.", "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 15th and 0 of 108 on the 16th.", "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 22815 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Saturday 15 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": "1985-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-15", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Saturday 15 June. Trayodaśī runs from 08:56 on Sat 15 Jun to 11:04 on Sun 16 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-06-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-06-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37831, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-06-16T11:03:37+02:00", "utc": "1985-06-16T09:03:37Z", "ms": 487760616508.1957 }, "end": { "local": "1985-06-17T12:45:29+02:00", "utc": "1985-06-17T10:45:29Z", "ms": 487853129481.71606 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-16T11:03:37+02:00", "utc": "1985-06-16T09:03:37Z", "ms": 487760616508.1957 }, "end": { "local": "1985-06-17T12:45:29+02:00", "utc": "1985-06-17T10:45:29Z", "ms": 487853129481.71606 } }, "kaala": "nishita", "days": [ { "local_date": "1985-06-15", "window": { "start": { "local": "1985-06-15T23:45:06+02:00", "utc": "1985-06-15T21:45:06Z", "ms": 487719905522.91003 }, "end": { "local": "1985-06-16T00:33:06+02:00", "utc": "1985-06-15T22:33:06Z", "ms": 487722785522.91003 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-06-16", "window": { "start": { "local": "1985-06-16T23:45:18+02:00", "utc": "1985-06-16T21:45:18Z", "ms": 487806318238.71106 }, "end": { "local": "1985-06-17T00:33:18+02:00", "utc": "1985-06-16T22:33:18Z", "ms": 487809198238.71106 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:04 on Sun 16 Jun to 12:45 on Mon 17 Jun.", "fact": "1985-06-16T09:03:37Z → 1985-06-17T10:45:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 15th, 23:45–00:33 on the 16th.", "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 15th and 48 of 48 on the 16th.", "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 37831 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Sunday 16 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": "1985-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-16", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Sunday 16 June. Caturdaśī runs from 11:04 on Sun 16 Jun to 12:45 on Mon 17 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-06-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7571, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1985-06-19T14:40:00+02:00", "utc": "1985-06-19T12:40:00Z", "ms": 488032800377.8727 }, "end": { "local": "1985-06-20T14:52:38+02:00", "utc": "1985-06-20T12:52:38Z", "ms": 488119957565.73895 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-19T14:40:00+02:00", "utc": "1985-06-19T12:40:00Z", "ms": 488032800377.8727 }, "end": { "local": "1985-06-20T14:52:38+02:00", "utc": "1985-06-20T12:52:38Z", "ms": 488119957565.73895 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-06-19", "window": { "start": { "local": "1985-06-19T11:45:49+02:00", "utc": "1985-06-19T09:45:49Z", "ms": 488022349335.8689 }, "end": { "local": "1985-06-19T12:33:49+02:00", "utc": "1985-06-19T10:33:49Z", "ms": 488025229335.8689 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-06-20", "window": { "start": { "local": "1985-06-20T11:46:03+02:00", "utc": "1985-06-20T09:46:03Z", "ms": 488108762708.4089 }, "end": { "local": "1985-06-20T12:34:03+02:00", "utc": "1985-06-20T10:34:03Z", "ms": 488111642708.4089 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 14:40 on Wed 19 Jun to 14:53 on Thu 20 Jun.", "fact": "1985-06-19T12:40:00Z → 1985-06-20T12:52:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 19th, 11:46–12:34 on the 20th.", "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 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7571 s" }, { "step": "ruling", "text": "Rathayātrā, Soweto, 1985: Thursday 20 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": "1985-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-20", "confidence": "determinate" } ], "quote": "In Soweto, Rathayātrā 1985 falls on Thursday 20 June. Dvitīyā runs from 14:40 on Wed 19 Jun to 14:53 on Thu 20 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-06-22", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5015, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-06-21T14:37:51+02:00", "utc": "1985-06-21T12:37:51Z", "ms": 488205470547.8857 }, "end": { "local": "1985-06-22T13:58:05+02:00", "utc": "1985-06-22T11:58:05Z", "ms": 488289484551.6402 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-21T14:37:51+02:00", "utc": "1985-06-21T12:37:51Z", "ms": 488205470547.8857 }, "end": { "local": "1985-06-22T13:58:05+02:00", "utc": "1985-06-22T11:58:05Z", "ms": 488289484551.6402 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-06-21", "window": { "start": { "local": "1985-06-21T11:46:16+02:00", "utc": "1985-06-21T09:46:16Z", "ms": 488195176066.70483 }, "end": { "local": "1985-06-21T12:34:16+02:00", "utc": "1985-06-21T10:34:16Z", "ms": 488198056066.70483 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-06-22", "window": { "start": { "local": "1985-06-22T11:46:29+02:00", "utc": "1985-06-22T09:46:29Z", "ms": 488281589382.6253 }, "end": { "local": "1985-06-22T12:34:29+02:00", "utc": "1985-06-22T10:34:29Z", "ms": 488284469382.6253 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:38 on Fri 21 Jun to 13:58 on Sat 22 Jun.", "fact": "1985-06-21T12:37:51Z → 1985-06-22T11:58:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 21st, 11:46–12:34 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "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 5015 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Saturday 22 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": "1985-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-22", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Saturday 22 June. Caturthī runs from 14:38 on Fri 21 Jun to 13:58 on Sat 22 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-06-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1257, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-06-22T13:58:05+02:00", "utc": "1985-06-22T11:58:05Z", "ms": 488289484551.6402 }, "end": { "local": "1985-06-23T12:55:39+02:00", "utc": "1985-06-23T10:55:39Z", "ms": 488372139384.40393 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-22T13:58:05+02:00", "utc": "1985-06-22T11:58:05Z", "ms": 488289484551.6402 }, "end": { "local": "1985-06-23T12:55:39+02:00", "utc": "1985-06-23T10:55:39Z", "ms": 488372139384.40393 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-06-22", "window": { "start": { "local": "1985-06-22T11:46:29+02:00", "utc": "1985-06-22T09:46:29Z", "ms": 488281589382.6253 }, "end": { "local": "1985-06-22T12:34:29+02:00", "utc": "1985-06-22T10:34:29Z", "ms": 488284469382.6253 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-06-23", "window": { "start": { "local": "1985-06-23T11:46:43+02:00", "utc": "1985-06-23T09:46:43Z", "ms": 488368002628.4596 }, "end": { "local": "1985-06-23T12:34:43+02:00", "utc": "1985-06-23T10:34:43Z", "ms": 488370882628.4596 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 13:58 on Sat 22 Jun to 12:56 on Sun 23 Jun.", "fact": "1985-06-22T11:58:05Z → 1985-06-23T10:55:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 22nd, 11:47–12:35 on the 23rd.", "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 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1257 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Soweto, 1985: Sunday 23 June.", "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": "1985-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-23", "confidence": "determinate" } ], "quote": "In Soweto, Skanda Pañcamī 1985 falls on Sunday 23 June. Pañcamī runs from 13:58 on Sat 22 Jun to 12:56 on Sun 23 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 860, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-06-24T11:32:36+02:00", "utc": "1985-06-24T09:32:36Z", "ms": 488453555873.6243 }, "end": { "local": "1985-06-25T09:50:36+02:00", "utc": "1985-06-25T07:50:36Z", "ms": 488533836498.481 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-24T11:32:36+02:00", "utc": "1985-06-24T09:32:36Z", "ms": 488453555873.6243 }, "end": { "local": "1985-06-25T09:50:36+02:00", "utc": "1985-06-25T07:50:36Z", "ms": 488533836498.481 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-06-24", "window": { "start": { "local": "1985-06-24T11:46:56+02:00", "utc": "1985-06-24T09:46:56Z", "ms": 488454415777.2202 }, "end": { "local": "1985-06-24T12:34:56+02:00", "utc": "1985-06-24T10:34:56Z", "ms": 488457295777.2202 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-06-25", "window": { "start": { "local": "1985-06-25T11:47:09+02:00", "utc": "1985-06-25T09:47:09Z", "ms": 488540828802.9271 }, "end": { "local": "1985-06-25T12:35:09+02:00", "utc": "1985-06-25T10:35:09Z", "ms": 488543708802.9271 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 11:33 on Mon 24 Jun to 09:51 on Tue 25 Jun.", "fact": "1985-06-24T09:32:36Z → 1985-06-25T07:50:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 24th, 11:47–12:35 on the 25th.", "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 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 860 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Soweto, 1985: Monday 24 June.", "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": "1985-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-24", "confidence": "determinate" } ], "quote": "In Soweto, Vivasvat Saptamī 1985 falls on Monday 24 June. Saptamī runs from 11:33 on Mon 24 Jun to 09:51 on Tue 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-06-28", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13698, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-06-28T03:08:35+02:00", "utc": "1985-06-28T01:08:35Z", "ms": 488768915493.5474 }, "end": { "local": "1985-06-29T00:30:56+02:00", "utc": "1985-06-28T22:30:56Z", "ms": 488845856239.08185 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-28T03:08:35+02:00", "utc": "1985-06-28T01:08:35Z", "ms": 488768915493.5474 }, "end": { "local": "1985-06-29T00:30:56+02:00", "utc": "1985-06-28T22:30:56Z", "ms": 488845856239.08185 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-06-28", "window": { "start": { "local": "1985-06-28T06:56:53+02:00", "utc": "1985-06-28T04:56:53Z", "ms": 488782613494.87115 }, "end": { "local": "1985-06-28T06:56:53+02:00", "utc": "1985-06-28T04:56:53Z", "ms": 488782613494.87115 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-06-29", "window": { "start": { "local": "1985-06-29T06:56:59+02:00", "utc": "1985-06-29T04:56:59Z", "ms": 488869018592.05554 }, "end": { "local": "1985-06-29T06:56:59+02:00", "utc": "1985-06-29T04:56:59Z", "ms": 488869018592.05554 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:09 on Fri 28 Jun to 00:31 on Sat 29 Jun.", "fact": "1985-06-28T01:08:35Z → 1985-06-28T22:30:56Z" }, { "step": "kaala", "text": "Sunrise is at 06:57 on the 28th and 06:57 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13698 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Soweto, 1985: Friday 28 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": "1985-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-28", "confidence": "determinate" } ], "quote": "In Soweto, Hariśayanī Ekādaśī 1985 falls on Friday 28 June. Ekādaśī runs from 03:09 on Fri 28 Jun to 00:31 on Sat 29 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-06-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-06-30", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 604, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-06-29T21:47:57+02:00", "utc": "1985-06-29T19:47:57Z", "ms": 488922476882.58997 }, "end": { "local": "1985-06-30T19:05:14+02:00", "utc": "1985-06-30T17:05:14Z", "ms": 488999113942.56604 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-06-29T21:47:57+02:00", "utc": "1985-06-29T19:47:57Z", "ms": 488922476882.58997 }, "end": { "local": "1985-06-30T19:05:14+02:00", "utc": "1985-06-30T17:05:14Z", "ms": 488999113942.56604 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-06-29", "window": { "start": { "local": "1985-06-29T17:27:00+02:00", "utc": "1985-06-29T15:27:00Z", "ms": 488906819813.7929 }, "end": { "local": "1985-06-29T19:15:00+02:00", "utc": "1985-06-29T17:15:00Z", "ms": 488913300173.4488 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "1985-06-30", "window": { "start": { "local": "1985-06-30T17:27:20+02:00", "utc": "1985-06-30T15:27:20Z", "ms": 488993240033.4367 }, "end": { "local": "1985-06-30T19:15:18+02:00", "utc": "1985-06-30T17:15:18Z", "ms": 488999717927.8498 } }, "covered_min": 98, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:48 on Sat 29 Jun to 19:05 on Sun 30 Jun.", "fact": "1985-06-29T19:47:57Z → 1985-06-30T17:05:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:27–19:15 on the 29th, 17:27–19:15 on the 30th.", "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 29th and 98 of 108 on the 30th.", "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 604 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Sunday 30 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": "1985-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-06-30", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Sunday 30 June. Trayodaśī runs from 21:48 on Sat 29 Jun to 19:05 on Sun 30 Jun and covers 98 of 108 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-06-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3491, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 } }, "kaala": "sayahna", "days": [ { "local_date": "1985-07-01", "window": { "start": { "local": "1985-07-01T15:21:33+02:00", "utc": "1985-07-01T13:21:33Z", "ms": 489072092802.52185 }, "end": { "local": "1985-07-01T17:27:40+02:00", "utc": "1985-07-01T15:27:40Z", "ms": 489079659942.76855 } }, "covered_min": 58, "window_min": 126, "qualifies": true }, { "local_date": "1985-07-02", "window": { "start": { "local": "1985-07-02T15:21:50+02:00", "utc": "1985-07-02T13:21:50Z", "ms": 489158510369.0504 }, "end": { "local": "1985-07-02T17:28:02+02:00", "utc": "1985-07-02T15:28:02Z", "ms": 489166081518.0131 } }, "covered_min": 0, "window_min": 126, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul.", "fact": "1985-07-01T14:29:29Z → 1985-07-02T12:08:19Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:22–17:28 on the 1st, 15:22–17:28 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 58 of 126 minutes on the 1st and 0 of 126 on the 2nd.", "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 3491 s" }, { "step": "ruling", "text": "Kokilā Vrata, Soweto, 1985: Monday 1 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": "1985-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-01", "confidence": "determinate" } ], "quote": "In Soweto, Kokilā Vrata 1985 falls on Monday 1 July. Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul and covers 58 of 126 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3491, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-07-01", "window": { "start": { "local": "1985-07-01T17:27:40+02:00", "utc": "1985-07-01T15:27:40Z", "ms": 489079659942.76855 }, "end": { "local": "1985-07-01T19:15:35+02:00", "utc": "1985-07-01T17:15:35Z", "ms": 489086135386.82605 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1985-07-02", "window": { "start": { "local": "1985-07-02T17:28:02+02:00", "utc": "1985-07-02T15:28:02Z", "ms": 489166081518.0131 }, "end": { "local": "1985-07-02T19:15:54+02:00", "utc": "1985-07-02T17:15:54Z", "ms": 489172554128.6929 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul.", "fact": "1985-07-01T14:29:29Z → 1985-07-02T12:08:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:28–19:16 on the 1st, 17:28–19:16 on the 2nd.", "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 1st and 0 of 108 on the 2nd.", "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 3491 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Soweto, 1985: Monday 1 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": "1985-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-01", "confidence": "determinate" } ], "quote": "In Soweto, Śiva Śayanotsava 1985 falls on Monday 1 July. Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18302, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 } }, "kaala": "udaya-3", "days": [ { "local_date": "1985-07-01", "window": { "start": { "local": "1985-07-01T06:57:04+02:00", "utc": "1985-07-01T04:57:04Z", "ms": 489041824241.53503 }, "end": { "local": "1985-07-01T09:03:11+02:00", "utc": "1985-07-01T07:03:11Z", "ms": 489049391381.78174 } }, "covered_min": 0, "window_min": 126, "qualifies": false }, { "local_date": "1985-07-02", "window": { "start": { "local": "1985-07-02T06:57:06+02:00", "utc": "1985-07-02T04:57:06Z", "ms": 489128225773.19965 }, "end": { "local": "1985-07-02T09:03:17+02:00", "utc": "1985-07-02T07:03:17Z", "ms": 489135796922.16235 } }, "covered_min": 126, "window_min": 126, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul.", "fact": "1985-07-01T14:29:29Z → 1985-07-02T12:08:19Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:57–09:03 on the 1st, 06:57–09:03 on the 2nd.", "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 126 minutes on the 1st and 126 of 126 on the 2nd.", "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 18302 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Soweto, 1985: Tuesday 2 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": "1985-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-02", "confidence": "determinate" } ], "quote": "In Soweto, Vyāsa Pūjā 1985 falls on Tuesday 2 July. Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5506, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1985-07-01T16:29:29+02:00", "utc": "1985-07-01T14:29:29Z", "ms": 489076169070.59326 }, "end": { "local": "1985-07-02T14:08:19+02:00", "utc": "1985-07-02T12:08:19Z", "ms": 489154099357.8222 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-07-01", "window": { "start": { "local": "1985-07-01T11:48:22+02:00", "utc": "1985-07-01T09:48:22Z", "ms": 489059302092.1518 }, "end": { "local": "1985-07-01T12:36:22+02:00", "utc": "1985-07-01T10:36:22Z", "ms": 489062182092.1518 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-07-02", "window": { "start": { "local": "1985-07-02T11:48:34+02:00", "utc": "1985-07-02T09:48:34Z", "ms": 489145713645.6064 }, "end": { "local": "1985-07-02T12:36:34+02:00", "utc": "1985-07-02T10:36:34Z", "ms": 489148593645.6064 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul.", "fact": "1985-07-01T14:29:29Z → 1985-07-02T12:08:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 1st, 11:49–12:37 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "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 5506 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Soweto, 1985: Tuesday 2 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": "1985-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-02", "confidence": "determinate" } ], "quote": "In Soweto, Guru Pūrṇimā 1985 falls on Tuesday 2 July. Pūrṇimā runs from 16:29 on Mon 1 Jul to 14:08 on Tue 2 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22848, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1985-07-03T12:09:48+02:00", "utc": "1985-07-03T10:09:48Z", "ms": 489233388057.37134 }, "end": { "local": "1985-07-04T10:41:54+02:00", "utc": "1985-07-04T08:41:54Z", "ms": 489314514207.7293 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-03T12:09:48+02:00", "utc": "1985-07-03T10:09:48Z", "ms": 489233388057.37134 }, "end": { "local": "1985-07-04T10:41:54+02:00", "utc": "1985-07-04T08:41:54Z", "ms": 489314514207.7293 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-07-03", "window": { "start": { "local": "1985-07-03T18:30:36+02:00", "utc": "1985-07-03T16:30:36Z", "ms": 489256236335.48505 }, "end": { "local": "1985-07-03T18:30:36+02:00", "utc": "1985-07-03T16:30:36Z", "ms": 489256236335.48505 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-07-04", "window": { "start": { "local": "1985-07-04T19:34:31+02:00", "utc": "1985-07-04T17:34:31Z", "ms": 489346471227.15985 }, "end": { "local": "1985-07-04T19:34:31+02:00", "utc": "1985-07-04T17:34:31Z", "ms": 489346471227.15985 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 12:10 on Wed 3 Jul to 10:42 on Thu 4 Jul.", "fact": "1985-07-03T10:09:48Z → 1985-07-04T08:41:54Z" }, { "step": "kaala", "text": "Moonrise is at 18:31 on the 3rd and 19:35 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 3rd and is not on the 4th.", "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 22848 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Soweto, 1985: Wednesday 3 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": "1985-07-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-03", "confidence": "determinate" } ], "quote": "In Soweto, Aśūnya Śayana Vrata (Āṣāḍha) 1985 falls on Wednesday 3 July. Dvitīyā runs from 12:10 on Wed 3 Jul to 10:42 on Thu 4 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-07-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38639, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-07-05T09:51:44+02:00", "utc": "1985-07-05T07:51:44Z", "ms": 489397904231.9753 }, "end": { "local": "1985-07-06T09:44:31+02:00", "utc": "1985-07-06T07:44:31Z", "ms": 489483871036.1131 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-05T09:51:44+02:00", "utc": "1985-07-05T07:51:44Z", "ms": 489397904231.9753 }, "end": { "local": "1985-07-06T09:44:31+02:00", "utc": "1985-07-06T07:44:31Z", "ms": 489483871036.1131 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-07-05", "window": { "start": { "local": "1985-07-05T20:35:44+02:00", "utc": "1985-07-05T18:35:44Z", "ms": 489436543504.4992 }, "end": { "local": "1985-07-05T20:35:44+02:00", "utc": "1985-07-05T18:35:44Z", "ms": 489436543504.4992 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-07-06", "window": { "start": { "local": "1985-07-06T21:33:28+02:00", "utc": "1985-07-06T19:33:28Z", "ms": 489526407739.93695 }, "end": { "local": "1985-07-06T21:33:28+02:00", "utc": "1985-07-06T19:33:28Z", "ms": 489526407739.93695 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:52 on Fri 5 Jul to 09:45 on Sat 6 Jul.", "fact": "1985-07-05T07:51:44Z → 1985-07-06T07:44:31Z" }, { "step": "kaala", "text": "Moonrise is at 20:36 on the 5th and 21:33 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 5th and is not on the 6th.", "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 38639 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Friday 5 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-05", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Friday 5 July. Caturthī runs from 09:52 on Fri 5 Jul to 09:45 on Sat 6 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-07-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-07-13", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28047, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-07-12T21:01:21+02:00", "utc": "1985-07-12T19:01:21Z", "ms": 490042881226.5433 }, "end": { "local": "1985-07-13T23:08:21+02:00", "utc": "1985-07-13T21:08:21Z", "ms": 490136901410.20465 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-12T21:01:21+02:00", "utc": "1985-07-12T19:01:21Z", "ms": 490042881226.5433 }, "end": { "local": "1985-07-13T23:08:21+02:00", "utc": "1985-07-13T21:08:21Z", "ms": 490136901410.20465 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-07-13", "window": { "start": { "local": "1985-07-13T06:56:01+02:00", "utc": "1985-07-13T04:56:01Z", "ms": 490078561328.42804 }, "end": { "local": "1985-07-13T06:56:01+02:00", "utc": "1985-07-13T04:56:01Z", "ms": 490078561328.42804 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-07-14", "window": { "start": { "local": "1985-07-14T06:55:48+02:00", "utc": "1985-07-14T04:55:48Z", "ms": 490164947914.03253 }, "end": { "local": "1985-07-14T06:55:48+02:00", "utc": "1985-07-14T04:55:48Z", "ms": 490164947914.03253 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:01 on Fri 12 Jul to 23:08 on Sat 13 Jul.", "fact": "1985-07-12T19:01:21Z → 1985-07-13T21:08:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:56 on the 13th and 06:56 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "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 28047 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Soweto, 1985: Saturday 13 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": "1985-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-13", "confidence": "determinate" } ], "quote": "In Soweto, Kāmikā Ekādaśī 1985 falls on Saturday 13 July. Ekādaśī runs from 21:01 on Fri 12 Jul to 23:08 on Sat 13 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-07-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-07-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19513, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-07-15T00:45:16+02:00", "utc": "1985-07-14T22:45:16Z", "ms": 490229115931.7351 }, "end": { "local": "1985-07-16T01:46:04+02:00", "utc": "1985-07-15T23:46:04Z", "ms": 490319164458.16266 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-15T00:45:16+02:00", "utc": "1985-07-14T22:45:16Z", "ms": 490229115931.7351 }, "end": { "local": "1985-07-16T01:46:04+02:00", "utc": "1985-07-15T23:46:04Z", "ms": 490319164458.16266 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-07-14", "window": { "start": { "local": "1985-07-14T17:33:03+02:00", "utc": "1985-07-14T15:33:03Z", "ms": 490203183281.73926 }, "end": { "local": "1985-07-14T19:20:03+02:00", "utc": "1985-07-14T17:20:03Z", "ms": 490209603273.5882 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1985-07-15", "window": { "start": { "local": "1985-07-15T17:33:31+02:00", "utc": "1985-07-15T15:33:31Z", "ms": 490289611175.91 }, "end": { "local": "1985-07-15T19:20:25+02:00", "utc": "1985-07-15T17:20:25Z", "ms": 490296025318.5257 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:45 on Mon 15 Jul to 01:46 on Tue 16 Jul.", "fact": "1985-07-14T22:45:16Z → 1985-07-15T23:46:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:33–19:20 on the 14th, 17:34–19:20 on the 15th.", "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 107 minutes on the 14th and 107 of 107 on the 15th.", "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 19513 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Monday 15 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": "1985-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-15", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Monday 15 July. Trayodaśī runs from 00:45 on Mon 15 Jul to 01:46 on Tue 16 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-07-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-07-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4060, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-07-16T01:46:04+02:00", "utc": "1985-07-15T23:46:04Z", "ms": 490319164458.16266 }, "end": { "local": "1985-07-17T02:09:08+02:00", "utc": "1985-07-17T00:09:08Z", "ms": 490406948415.6349 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-16T01:46:04+02:00", "utc": "1985-07-15T23:46:04Z", "ms": 490319164458.16266 }, "end": { "local": "1985-07-17T02:09:08+02:00", "utc": "1985-07-17T00:09:08Z", "ms": 490406948415.6349 } }, "kaala": "nishita", "days": [ { "local_date": "1985-07-15", "window": { "start": { "local": "1985-07-15T23:50:24+02:00", "utc": "1985-07-15T21:50:24Z", "ms": 490312224210.719 }, "end": { "local": "1985-07-16T00:38:24+02:00", "utc": "1985-07-15T22:38:24Z", "ms": 490315104210.719 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-07-16", "window": { "start": { "local": "1985-07-16T23:50:30+02:00", "utc": "1985-07-16T21:50:30Z", "ms": 490398629672.06775 }, "end": { "local": "1985-07-17T00:38:30+02:00", "utc": "1985-07-16T22:38:30Z", "ms": 490401509672.06775 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:46 on Tue 16 Jul to 02:09 on Wed 17 Jul.", "fact": "1985-07-15T23:46:04Z → 1985-07-17T00:09:08Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 15th, 23:50–00:38 on the 16th.", "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 15th and 48 of 48 on the 16th.", "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 4060 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Tuesday 16 July.", "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": "1985-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-16", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Tuesday 16 July. Caturdaśī runs from 01:46 on Tue 16 Jul to 02:09 on Wed 17 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-07-21", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29206, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-07-20T22:31:00+02:00", "utc": "1985-07-20T20:31:00Z", "ms": 490739460441.11084 }, "end": { "local": "1985-07-21T20:45:47+02:00", "utc": "1985-07-21T18:45:47Z", "ms": 490819546658.7214 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-20T22:31:00+02:00", "utc": "1985-07-20T20:31:00Z", "ms": 490739460441.11084 }, "end": { "local": "1985-07-21T20:45:47+02:00", "utc": "1985-07-21T18:45:47Z", "ms": 490819546658.7214 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-07-20", "window": { "start": { "local": "1985-07-20T11:50:57+02:00", "utc": "1985-07-20T09:50:57Z", "ms": 490701057425.3617 }, "end": { "local": "1985-07-20T12:38:57+02:00", "utc": "1985-07-20T10:38:57Z", "ms": 490703937425.3617 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-07-21", "window": { "start": { "local": "1985-07-21T11:51:01+02:00", "utc": "1985-07-21T09:51:01Z", "ms": 490787460808.98676 }, "end": { "local": "1985-07-21T12:39:01+02:00", "utc": "1985-07-21T10:39:01Z", "ms": 490790340808.98676 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:31 on Sat 20 Jul to 20:46 on Sun 21 Jul.", "fact": "1985-07-20T20:31:00Z → 1985-07-21T18:45:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 20th, 11:51–12:39 on the 21st.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29206 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Sunday 21 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-21", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Sunday 21 July. Caturthī runs from 22:31 on Sat 20 Jul to 20:46 on Sun 21 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-07-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-07-27", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2334, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-07-27T08:17:08+02:00", "utc": "1985-07-27T06:17:08Z", "ms": 491293027727.8558 }, "end": { "local": "1985-07-28T06:11:32+02:00", "utc": "1985-07-28T04:11:32Z", "ms": 491371891837.73566 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-27T08:17:08+02:00", "utc": "1985-07-27T06:17:08Z", "ms": 491293027727.8558 }, "end": { "local": "1985-07-28T06:11:32+02:00", "utc": "1985-07-28T04:11:32Z", "ms": 491371891837.73566 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-07-27", "window": { "start": { "local": "1985-07-27T06:50:57+02:00", "utc": "1985-07-27T04:50:57Z", "ms": 491287856908.3379 }, "end": { "local": "1985-07-27T06:50:57+02:00", "utc": "1985-07-27T04:50:57Z", "ms": 491287856908.3379 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-07-28", "window": { "start": { "local": "1985-07-28T06:50:26+02:00", "utc": "1985-07-28T04:50:26Z", "ms": 491374225670.76434 }, "end": { "local": "1985-07-28T06:50:26+02:00", "utc": "1985-07-28T04:50:26Z", "ms": 491374225670.76434 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:17 on Sat 27 Jul to 06:12 on Sun 28 Jul.", "fact": "1985-07-27T06:17:08Z → 1985-07-28T04:11:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:51 on the 27th and 06:50 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is not on the 28th.", "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 2334 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Soweto, 1985: Saturday 27 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": "1985-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-27", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Ekādaśī 1985 falls on Saturday 27 July. Ekādaśī runs from 08:17 on Sat 27 Jul to 06:12 on Sun 28 Jul, and is current at sunrise on neither day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-07-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-07-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-07-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25072, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-07-29T04:12:07+02:00", "utc": "1985-07-29T02:12:07Z", "ms": 491451127076.6693 }, "end": { "local": "1985-07-30T02:23:23+02:00", "utc": "1985-07-30T00:23:23Z", "ms": 491531002704.7578 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-07-29T04:12:07+02:00", "utc": "1985-07-29T02:12:07Z", "ms": 491451127076.6693 }, "end": { "local": "1985-07-30T02:23:23+02:00", "utc": "1985-07-30T00:23:23Z", "ms": 491531002704.7578 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-07-28", "window": { "start": { "local": "1985-07-28T17:39:50+02:00", "utc": "1985-07-28T15:39:50Z", "ms": 491413189590.4889 }, "end": { "local": "1985-07-28T19:25:10+02:00", "utc": "1985-07-28T17:25:10Z", "ms": 491419510074.33856 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "1985-07-29", "window": { "start": { "local": "1985-07-29T17:40:19+02:00", "utc": "1985-07-29T15:40:19Z", "ms": 491499619054.68024 }, "end": { "local": "1985-07-29T19:25:31+02:00", "utc": "1985-07-29T17:25:31Z", "ms": 491505931123.48944 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:12 on Mon 29 Jul to 02:23 on Tue 30 Jul.", "fact": "1985-07-29T02:12:07Z → 1985-07-30T00:23:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:40–19:25 on the 28th, 17:40–19:26 on the 29th.", "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 105 minutes on the 28th and 105 of 105 on the 29th.", "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 25072 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Monday 29 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": "1985-07-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-07-29", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Monday 29 July. Trayodaśī runs from 04:12 on Mon 29 Jul to 02:23 on Tue 30 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-07-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-08-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11344, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-08-03T23:25:53+02:00", "utc": "1985-08-03T21:25:53Z", "ms": 491952353476.57623 }, "end": { "local": "1985-08-05T00:37:34+02:00", "utc": "1985-08-04T22:37:34Z", "ms": 492043053529.2533 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-03T23:25:53+02:00", "utc": "1985-08-03T21:25:53Z", "ms": 491952353476.57623 }, "end": { "local": "1985-08-05T00:37:34+02:00", "utc": "1985-08-04T22:37:34Z", "ms": 492043053529.2533 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-08-03", "window": { "start": { "local": "1985-08-03T20:16:50+02:00", "utc": "1985-08-03T18:16:50Z", "ms": 491941009512.3403 }, "end": { "local": "1985-08-03T20:16:50+02:00", "utc": "1985-08-03T18:16:50Z", "ms": 491941009512.3403 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-08-04", "window": { "start": { "local": "1985-08-04T21:10:38+02:00", "utc": "1985-08-04T19:10:38Z", "ms": 492030638316.218 }, "end": { "local": "1985-08-04T21:10:38+02:00", "utc": "1985-08-04T19:10:38Z", "ms": 492030638316.218 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:26 on Sat 3 Aug to 00:38 on Mon 5 Aug.", "fact": "1985-08-03T21:25:53Z → 1985-08-04T22:37:34Z" }, { "step": "kaala", "text": "Moonrise is at 20:17 on the 3rd and 21:11 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "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 11344 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Sunday 4 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": "1985-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-04", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Sunday 4 August. Caturthī runs from 23:26 on Sat 3 Aug to 00:38 on Mon 5 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-08-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-08-12", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25300, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-08-11T13:42:49+02:00", "utc": "1985-08-11T11:42:49Z", "ms": 492608569069.90344 }, "end": { "local": "1985-08-12T14:47:55+02:00", "utc": "1985-08-12T12:47:55Z", "ms": 492698875493.4345 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-11T13:42:49+02:00", "utc": "1985-08-11T11:42:49Z", "ms": 492608569069.90344 }, "end": { "local": "1985-08-12T14:47:55+02:00", "utc": "1985-08-12T12:47:55Z", "ms": 492698875493.4345 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-08-11", "window": { "start": { "local": "1985-08-11T06:41:09+02:00", "utc": "1985-08-11T04:41:09Z", "ms": 492583268968.5698 }, "end": { "local": "1985-08-11T06:41:09+02:00", "utc": "1985-08-11T04:41:09Z", "ms": 492583268968.5698 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-08-12", "window": { "start": { "local": "1985-08-12T06:40:21+02:00", "utc": "1985-08-12T04:40:21Z", "ms": 492669621411.73975 }, "end": { "local": "1985-08-12T06:40:21+02:00", "utc": "1985-08-12T04:40:21Z", "ms": 492669621411.73975 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:43 on Sun 11 Aug to 14:48 on Mon 12 Aug.", "fact": "1985-08-11T11:42:49Z → 1985-08-12T12:47:55Z" }, { "step": "kaala", "text": "Sunrise is at 06:41 on the 11th and 06:40 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 11th and is on the 12th.", "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 25300 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Soweto, 1985: Monday 12 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": "1985-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-12", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Ekādaśī 1985 falls on Monday 12 August. Ekādaśī runs from 13:43 on Sun 11 Aug to 14:48 on Mon 12 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-08-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-08-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9524, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-08-13T15:08:47+02:00", "utc": "1985-08-13T13:08:47Z", "ms": 492786527441.8891 }, "end": { "local": "1985-08-14T14:45:37+02:00", "utc": "1985-08-14T12:45:37Z", "ms": 492871536564.9424 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-13T15:08:47+02:00", "utc": "1985-08-13T13:08:47Z", "ms": 492786527441.8891 }, "end": { "local": "1985-08-14T14:45:37+02:00", "utc": "1985-08-14T12:45:37Z", "ms": 492871536564.9424 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-08-13", "window": { "start": { "local": "1985-08-13T17:47:31+02:00", "utc": "1985-08-13T15:47:31Z", "ms": 492796051269.0472 }, "end": { "local": "1985-08-13T19:30:21+02:00", "utc": "1985-08-13T17:30:21Z", "ms": 492802220899.726 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "1985-08-14", "window": { "start": { "local": "1985-08-14T17:47:59+02:00", "utc": "1985-08-14T15:47:59Z", "ms": 492882479074.2096 }, "end": { "local": "1985-08-14T19:30:38+02:00", "utc": "1985-08-14T17:30:38Z", "ms": 492888638288.3505 } }, "covered_min": 0, "window_min": 103, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:09 on Tue 13 Aug to 14:46 on Wed 14 Aug.", "fact": "1985-08-13T13:08:47Z → 1985-08-14T12:45:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:48–19:30 on the 13th, 17:48–19:31 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 103 of 103 minutes on the 13th and 0 of 103 on the 14th.", "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 9524 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Tuesday 13 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": "1985-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-13", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Tuesday 13 August. Trayodaśī runs from 15:09 on Tue 13 Aug to 14:46 on Wed 14 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-08-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-08-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32600, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-08-14T14:45:37+02:00", "utc": "1985-08-14T12:45:37Z", "ms": 492871536564.9424 }, "end": { "local": "1985-08-15T13:42:21+02:00", "utc": "1985-08-15T11:42:21Z", "ms": 492954141016.8024 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-14T14:45:37+02:00", "utc": "1985-08-14T12:45:37Z", "ms": 492871536564.9424 }, "end": { "local": "1985-08-15T13:42:21+02:00", "utc": "1985-08-15T11:42:21Z", "ms": 492954141016.8024 } }, "kaala": "nishita", "days": [ { "local_date": "1985-08-14", "window": { "start": { "local": "1985-08-14T23:48:56+02:00", "utc": "1985-08-14T21:48:56Z", "ms": 492904136127.2381 }, "end": { "local": "1985-08-15T00:36:56+02:00", "utc": "1985-08-14T22:36:56Z", "ms": 492907016127.2381 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-08-15", "window": { "start": { "local": "1985-08-15T23:48:44+02:00", "utc": "1985-08-15T21:48:44Z", "ms": 492990524344.6225 }, "end": { "local": "1985-08-16T00:36:44+02:00", "utc": "1985-08-15T22:36:44Z", "ms": 492993404344.6225 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:46 on Wed 14 Aug to 13:42 on Thu 15 Aug.", "fact": "1985-08-14T12:45:37Z → 1985-08-15T11:42:21Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:49–00:37 on the 14th, 23:49–00:37 on the 15th.", "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 14th and 0 of 48 on the 15th.", "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 32600 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Wednesday 14 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": "1985-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-14", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Wednesday 14 August. Caturdaśī runs from 14:46 on Wed 14 Aug to 13:42 on Thu 15 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14740, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-08-18T07:42:53+02:00", "utc": "1985-08-18T05:42:53Z", "ms": 493191772797.998 }, "end": { "local": "1985-08-19T05:13:10+02:00", "utc": "1985-08-19T03:13:10Z", "ms": 493269190134.92865 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-18T07:42:53+02:00", "utc": "1985-08-18T05:42:53Z", "ms": 493191772797.998 }, "end": { "local": "1985-08-19T05:13:10+02:00", "utc": "1985-08-19T03:13:10Z", "ms": 493269190134.92865 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-08-18", "window": { "start": { "local": "1985-08-18T11:48:33+02:00", "utc": "1985-08-18T09:48:33Z", "ms": 493206512772.303 }, "end": { "local": "1985-08-18T12:36:33+02:00", "utc": "1985-08-18T10:36:33Z", "ms": 493209392772.303 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-08-19", "window": { "start": { "local": "1985-08-19T11:48:19+02:00", "utc": "1985-08-19T09:48:19Z", "ms": 493292899350.76697 }, "end": { "local": "1985-08-19T12:36:19+02:00", "utc": "1985-08-19T10:36:19Z", "ms": 493295779350.76697 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:43 on Sun 18 Aug to 05:13 on Mon 19 Aug.", "fact": "1985-08-18T05:42:53Z → 1985-08-19T03:13:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 18th, 11:48–12:36 on the 19th.", "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 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14740 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Soweto, 1985: Sunday 18 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-18", "confidence": "determinate" } ], "quote": "In Soweto, Madhusravā Tṛtīyā (Hariyali Teej) 1985 falls on Sunday 18 August. Tṛtīyā runs from 07:43 on Sun 18 Aug to 05:13 on Mon 19 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-08-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23709, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-08-19T05:13:10+02:00", "utc": "1985-08-19T03:13:10Z", "ms": 493269190134.92865 }, "end": { "local": "1985-08-20T02:40:46+02:00", "utc": "1985-08-20T00:40:46Z", "ms": 493346446016.8817 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-19T05:13:10+02:00", "utc": "1985-08-19T03:13:10Z", "ms": 493269190134.92865 }, "end": { "local": "1985-08-20T02:40:46+02:00", "utc": "1985-08-20T00:40:46Z", "ms": 493346446016.8817 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-08-19", "window": { "start": { "local": "1985-08-19T11:48:19+02:00", "utc": "1985-08-19T09:48:19Z", "ms": 493292899350.76697 }, "end": { "local": "1985-08-19T12:36:19+02:00", "utc": "1985-08-19T10:36:19Z", "ms": 493295779350.76697 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-08-20", "window": { "start": { "local": "1985-08-20T11:48:05+02:00", "utc": "1985-08-20T09:48:05Z", "ms": 493379285426.42834 }, "end": { "local": "1985-08-20T12:36:05+02:00", "utc": "1985-08-20T10:36:05Z", "ms": 493382165426.42834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:13 on Mon 19 Aug to 02:41 on Tue 20 Aug.", "fact": "1985-08-19T03:13:10Z → 1985-08-20T00:40:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:48–12:36 on the 20th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23709 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Monday 19 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-19", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Monday 19 August. Caturthī runs from 05:13 on Mon 19 Aug to 02:41 on Tue 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-08-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32839, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-08-20T02:40:46+02:00", "utc": "1985-08-20T00:40:46Z", "ms": 493346446016.8817 }, "end": { "local": "1985-08-21T00:11:23+02:00", "utc": "1985-08-20T22:11:23Z", "ms": 493423882584.7288 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-20T02:40:46+02:00", "utc": "1985-08-20T00:40:46Z", "ms": 493346446016.8817 }, "end": { "local": "1985-08-21T00:11:23+02:00", "utc": "1985-08-20T22:11:23Z", "ms": 493423882584.7288 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-08-20", "window": { "start": { "local": "1985-08-20T11:48:05+02:00", "utc": "1985-08-20T09:48:05Z", "ms": 493379285426.42834 }, "end": { "local": "1985-08-20T12:36:05+02:00", "utc": "1985-08-20T10:36:05Z", "ms": 493382165426.42834 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-08-21", "window": { "start": { "local": "1985-08-21T11:47:51+02:00", "utc": "1985-08-21T09:47:51Z", "ms": 493465671008.5842 }, "end": { "local": "1985-08-21T12:35:51+02:00", "utc": "1985-08-21T10:35:51Z", "ms": 493468551008.5842 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:41 on Tue 20 Aug to 00:11 on Wed 21 Aug.", "fact": "1985-08-20T00:40:46Z → 1985-08-20T22:11:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 20th, 11:48–12:36 on the 21st.", "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 20th and 0 of 48 on the 21st.", "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 32839 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Soweto, 1985: Tuesday 20 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-20", "confidence": "determinate" } ], "quote": "In Soweto, Nāga Pañcamī 1985 falls on Tuesday 20 August. Pañcamī runs from 02:41 on Tue 20 Aug to 00:11 on Wed 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-08-26", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23703, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-08-25T14:19:12+02:00", "utc": "1985-08-25T12:19:12Z", "ms": 493820351617.1732 }, "end": { "local": "1985-08-26T13:02:49+02:00", "utc": "1985-08-26T11:02:49Z", "ms": 493902168681.7829 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-25T14:19:12+02:00", "utc": "1985-08-25T12:19:12Z", "ms": 493820351617.1732 }, "end": { "local": "1985-08-26T13:02:49+02:00", "utc": "1985-08-26T11:02:49Z", "ms": 493902168681.7829 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-08-25", "window": { "start": { "local": "1985-08-25T06:28:44+02:00", "utc": "1985-08-25T04:28:44Z", "ms": 493792124480.9449 }, "end": { "local": "1985-08-25T06:28:44+02:00", "utc": "1985-08-25T04:28:44Z", "ms": 493792124480.9449 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-08-26", "window": { "start": { "local": "1985-08-26T06:27:46+02:00", "utc": "1985-08-26T04:27:46Z", "ms": 493878465527.98987 }, "end": { "local": "1985-08-26T06:27:46+02:00", "utc": "1985-08-26T04:27:46Z", "ms": 493878465527.98987 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:19 on Sun 25 Aug to 13:03 on Mon 26 Aug.", "fact": "1985-08-25T12:19:12Z → 1985-08-26T11:02:49Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 25th and 06:28 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 23703 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Soweto, 1985: Monday 26 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": "1985-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-26", "confidence": "determinate" } ], "quote": "In Soweto, Putradā Ekādaśī 1985 falls on Monday 26 August. Ekādaśī runs from 14:19 on Sun 25 Aug to 13:03 on Mon 26 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-08-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1080, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-08-26T13:02:49+02:00", "utc": "1985-08-26T11:02:49Z", "ms": 493902168681.7829 }, "end": { "local": "1985-08-27T12:04:15+02:00", "utc": "1985-08-27T10:04:15Z", "ms": 493985054990.0874 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-26T13:02:49+02:00", "utc": "1985-08-26T11:02:49Z", "ms": 493902168681.7829 }, "end": { "local": "1985-08-27T12:04:15+02:00", "utc": "1985-08-27T10:04:15Z", "ms": 493985054990.0874 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-08-26", "window": { "start": { "local": "1985-08-26T11:46:32+02:00", "utc": "1985-08-26T09:46:32Z", "ms": 493897591950.7457 }, "end": { "local": "1985-08-26T12:34:32+02:00", "utc": "1985-08-26T10:34:32Z", "ms": 493900471950.7457 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-08-27", "window": { "start": { "local": "1985-08-27T11:46:15+02:00", "utc": "1985-08-27T09:46:15Z", "ms": 493983974852.2886 }, "end": { "local": "1985-08-27T12:34:15+02:00", "utc": "1985-08-27T10:34:15Z", "ms": 493986854852.2886 } }, "covered_min": 18, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:03 on Mon 26 Aug to 12:04 on Tue 27 Aug.", "fact": "1985-08-26T11:02:49Z → 1985-08-27T10:04:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 26th, 11:46–12:34 on the 27th.", "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 26th and 18 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: purvaviddha → only-day · margin 1080 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Soweto, 1985: Tuesday 27 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": "1985-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-26", "confidence": "determinate" } ], "quote": "In Soweto, Dāmodara Dvādaśī 1985 falls on Tuesday 27 August. Dvādaśī runs from 13:03 on Mon 26 Aug to 12:04 on Tue 27 Aug and covers 18 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-08-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20969, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-08-27T12:04:15+02:00", "utc": "1985-08-27T10:04:15Z", "ms": 493985054990.0874 }, "end": { "local": "1985-08-28T11:26:25+02:00", "utc": "1985-08-28T09:26:25Z", "ms": 494069184655.84247 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-27T12:04:15+02:00", "utc": "1985-08-27T10:04:15Z", "ms": 493985054990.0874 }, "end": { "local": "1985-08-28T11:26:25+02:00", "utc": "1985-08-28T09:26:25Z", "ms": 494069184655.84247 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-08-27", "window": { "start": { "local": "1985-08-27T17:53:44+02:00", "utc": "1985-08-27T15:53:44Z", "ms": 494006023773.1945 }, "end": { "local": "1985-08-27T19:34:00+02:00", "utc": "1985-08-27T17:34:00Z", "ms": 494012040032.51685 } }, "covered_min": 100, "window_min": 100, "qualifies": true }, { "local_date": "1985-08-28", "window": { "start": { "local": "1985-08-28T17:54:09+02:00", "utc": "1985-08-28T15:54:09Z", "ms": 494092449013.584 }, "end": { "local": "1985-08-28T19:34:14+02:00", "utc": "1985-08-28T17:34:14Z", "ms": 494098453800.4861 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:04 on Tue 27 Aug to 11:26 on Wed 28 Aug.", "fact": "1985-08-27T10:04:15Z → 1985-08-28T09:26:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:34 on the 27th, 17:54–19:34 on the 28th.", "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 27th and 0 of 100 on the 28th.", "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 20969 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Tuesday 27 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": "1985-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-27", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Tuesday 27 August. Trayodaśī runs from 12:04 on Tue 27 Aug to 11:26 on Wed 28 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-08-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 18206, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-08-29T11:12:49+02:00", "utc": "1985-08-29T09:12:49Z", "ms": 494154769401.91235 }, "end": { "local": "1985-08-30T11:27:10+02:00", "utc": "1985-08-30T09:27:10Z", "ms": 494242029737.49396 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1985-08-29T23:16:17+02:00", "utc": "1985-08-29T21:16:17Z", "ms": 494198177141.58795 }, "end": { "local": "1985-08-30T11:27:10+02:00", "utc": "1985-08-30T09:27:10Z", "ms": 494242029737.49396 } }, "kaala": "day", "days": [ { "local_date": "1985-08-29", "window": { "start": { "local": "1985-08-29T06:24:45+02:00", "utc": "1985-08-29T04:24:45Z", "ms": 494137484915.34955 }, "end": { "local": "1985-08-30T06:23:44+02:00", "utc": "1985-08-30T04:23:44Z", "ms": 494223823550.3219 } }, "covered_min": 427, "window_min": 1439, "qualifies": true }, { "local_date": "1985-08-30", "window": { "start": { "local": "1985-08-30T06:23:44+02:00", "utc": "1985-08-30T04:23:44Z", "ms": 494223823550.3219 }, "end": { "local": "1985-08-31T06:22:42+02:00", "utc": "1985-08-31T04:22:42Z", "ms": 494310161650.218 } }, "covered_min": 303, "window_min": 1439, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:13 on Thu 29 Aug to 11:27 on Fri 30 Aug. Its second half begins at 23:16 on Thu 29 Aug.", "fact": "1985-08-29T09:12:49Z → 1985-08-30T09:27:10Z · second half from 1985-08-29T21:16:17Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:25 on the 29th, and from 06:24 on the 30th.", "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 427 of 1439 minutes on the 29th and 303 of 1439 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 18206 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Soweto, 1985: Thursday 29 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-08-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-29", "confidence": "boundary" } ], "quote": "In Soweto, Rakṣā Bandhana (Rakhi) 1985 falls on Thursday 29 August. The second half of Pūrṇimā runs from 23:16 on Thu 29 Aug to 11:27 on Fri 30 Aug and falls on two days: 427 minutes of it on the 29th, 303 on the 30th; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1092, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-08-29T11:12:49+02:00", "utc": "1985-08-29T09:12:49Z", "ms": 494154769401.91235 }, "end": { "local": "1985-08-30T11:27:10+02:00", "utc": "1985-08-30T09:27:10Z", "ms": 494242029737.49396 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1985-08-29T11:12:49+02:00", "utc": "1985-08-29T09:12:49Z", "ms": 494154769401.91235 }, "end": { "local": "1985-08-30T11:27:10+02:00", "utc": "1985-08-30T09:27:10Z", "ms": 494242029737.49396 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-08-29", "window": { "start": { "local": "1985-08-29T11:45:40+02:00", "utc": "1985-08-29T09:45:40Z", "ms": 494156739510.57733 }, "end": { "local": "1985-08-29T12:33:40+02:00", "utc": "1985-08-29T10:33:40Z", "ms": 494159619510.57733 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-08-30", "window": { "start": { "local": "1985-08-30T11:45:21+02:00", "utc": "1985-08-30T09:45:21Z", "ms": 494243121306.05164 }, "end": { "local": "1985-08-30T12:33:21+02:00", "utc": "1985-08-30T10:33:21Z", "ms": 494246001306.05164 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:13 on Thu 29 Aug to 11:27 on Fri 30 Aug.", "fact": "1985-08-29T09:12:49Z → 1985-08-30T09:27:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 29th, 11:45–12:33 on the 30th.", "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 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: unstated → only-day · margin 1092 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Soweto, 1985: Thursday 29 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": "1985-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-29", "confidence": "boundary" } ], "quote": "In Soweto, Ṛṣi Tarpaṇa 1985 falls on Thursday 29 August. Pūrṇimā runs from 11:13 on Thu 29 Aug to 11:27 on Fri 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23027, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1985-08-31T12:12:29+02:00", "utc": "1985-08-31T10:12:29Z", "ms": 494331149203.2757 }, "end": { "local": "1985-09-01T13:30:15+02:00", "utc": "1985-09-01T11:30:15Z", "ms": 494422214998.78735 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-08-31T12:12:29+02:00", "utc": "1985-08-31T10:12:29Z", "ms": 494331149203.2757 }, "end": { "local": "1985-09-01T13:30:15+02:00", "utc": "1985-09-01T11:30:15Z", "ms": 494422214998.78735 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-08-31", "window": { "start": { "local": "1985-08-31T19:01:11+02:00", "utc": "1985-08-31T17:01:11Z", "ms": 494355670608.6919 }, "end": { "local": "1985-08-31T19:01:11+02:00", "utc": "1985-08-31T17:01:11Z", "ms": 494355670608.6919 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-09-01", "window": { "start": { "local": "1985-09-01T19:54:02+02:00", "utc": "1985-09-01T17:54:02Z", "ms": 494445242178.37616 }, "end": { "local": "1985-09-01T19:54:02+02:00", "utc": "1985-09-01T17:54:02Z", "ms": 494445242178.37616 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 12:12 on Sat 31 Aug to 13:30 on Sun 1 Sep.", "fact": "1985-08-31T10:12:29Z → 1985-09-01T11:30:15Z" }, { "step": "kaala", "text": "Moonrise is at 19:01 on the 31st and 19:54 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 31st and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23027 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Soweto, 1985: Saturday 31 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": "1985-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-08-31", "confidence": "determinate" } ], "quote": "In Soweto, Aśūnya Śayana Vrata 1985 falls on Saturday 31 August. Dvitīyā runs from 12:12 on Sat 31 Aug to 13:30 on Sun 1 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3451, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-09-01T13:30:15+02:00", "utc": "1985-09-01T11:30:15Z", "ms": 494422214998.78735 }, "end": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-01T13:30:15+02:00", "utc": "1985-09-01T11:30:15Z", "ms": 494422214998.78735 }, "end": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-01", "window": { "start": { "local": "1985-09-01T11:44:44+02:00", "utc": "1985-09-01T09:44:44Z", "ms": 494415883928.7638 }, "end": { "local": "1985-09-01T12:32:44+02:00", "utc": "1985-09-01T10:32:44Z", "ms": 494418763928.7638 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-02", "window": { "start": { "local": "1985-09-02T11:44:25+02:00", "utc": "1985-09-02T09:44:25Z", "ms": 494502264796.02924 }, "end": { "local": "1985-09-02T12:32:25+02:00", "utc": "1985-09-02T10:32:25Z", "ms": 494505144796.02924 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 13:30 on Sun 1 Sep to 15:19 on Mon 2 Sep.", "fact": "1985-09-01T11:30:15Z → 1985-09-02T13:19:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 1st, 11:44–12:32 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "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 3451 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Soweto, 1985: Monday 2 September.", "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": "1985-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-02", "confidence": "determinate" } ], "quote": "In Soweto, Kajjalī Tṛtīyā (Kajari Teej) 1985 falls on Monday 2 September. Tṛtīyā runs from 13:30 on Sun 1 Sep to 15:19 on Mon 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1073, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 }, "end": { "local": "1985-09-03T17:34:28+02:00", "utc": "1985-09-03T15:34:28Z", "ms": 494609667981.4022 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 }, "end": { "local": "1985-09-03T17:34:28+02:00", "utc": "1985-09-03T15:34:28Z", "ms": 494609667981.4022 } }, "kaala": "sayahna", "days": [ { "local_date": "1985-09-02", "window": { "start": { "local": "1985-09-02T15:37:06+02:00", "utc": "1985-09-02T13:37:06Z", "ms": 494516225861.4643 }, "end": { "local": "1985-09-02T17:56:13+02:00", "utc": "1985-09-02T15:56:13Z", "ms": 494524573238.421 } }, "covered_min": 139, "window_min": 139, "qualifies": true }, { "local_date": "1985-09-03", "window": { "start": { "local": "1985-09-03T15:37:13+02:00", "utc": "1985-09-03T13:37:13Z", "ms": 494602632822.7684 }, "end": { "local": "1985-09-03T17:56:38+02:00", "utc": "1985-09-03T15:56:38Z", "ms": 494610997775.76276 } }, "covered_min": 117, "window_min": 139, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:19 on Mon 2 Sep to 17:34 on Tue 3 Sep.", "fact": "1985-09-02T13:19:13Z → 1985-09-03T15:34:28Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:37–17:56 on the 2nd, 15:37–17:57 on the 3rd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 139 of 139 minutes on the 2nd and 117 of 139 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both late afternoons qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1073 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Soweto, 1985: Monday 2 September.", "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": "1985-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-02", "confidence": "determinate" } ], "quote": "In Soweto, Bahulā Caturthī 1985 falls on Monday 2 September. Caturthī runs from 15:19 on Mon 2 Sep to 17:34 on Tue 3 Sep and covers all of sāyāhna that late afternoon. It also reaches the next late afternoon for 117 minutes; by the rule the first late afternoon is taken.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-09-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14605, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 }, "end": { "local": "1985-09-03T17:34:28+02:00", "utc": "1985-09-03T15:34:28Z", "ms": 494609667981.4022 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-02T15:19:13+02:00", "utc": "1985-09-02T13:19:13Z", "ms": 494515152502.77435 }, "end": { "local": "1985-09-03T17:34:28+02:00", "utc": "1985-09-03T15:34:28Z", "ms": 494609667981.4022 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-09-02", "window": { "start": { "local": "1985-09-02T20:45:58+02:00", "utc": "1985-09-02T18:45:58Z", "ms": 494534757848.10913 }, "end": { "local": "1985-09-02T20:45:58+02:00", "utc": "1985-09-02T18:45:58Z", "ms": 494534757848.10913 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-09-03", "window": { "start": { "local": "1985-09-03T21:37:53+02:00", "utc": "1985-09-03T19:37:53Z", "ms": 494624272837.80707 }, "end": { "local": "1985-09-03T21:37:53+02:00", "utc": "1985-09-03T19:37:53Z", "ms": 494624272837.80707 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:19 on Mon 2 Sep to 17:34 on Tue 3 Sep.", "fact": "1985-09-02T13:19:13Z → 1985-09-03T15:34:28Z" }, { "step": "kaala", "text": "Moonrise is at 20:46 on the 2nd and 21:38 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14605 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Monday 2 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": "1985-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-02", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Monday 2 September. Caturthī runs from 15:19 on Mon 2 Sep to 17:34 on Tue 3 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-09-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27315, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-09-04T20:07:01+02:00", "utc": "1985-09-04T18:07:01Z", "ms": 494705220953.3818 }, "end": { "local": "1985-09-05T22:44:09+02:00", "utc": "1985-09-05T20:44:09Z", "ms": 494801048993.0116 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-04T20:07:01+02:00", "utc": "1985-09-04T18:07:01Z", "ms": 494705220953.3818 }, "end": { "local": "1985-09-05T22:44:09+02:00", "utc": "1985-09-05T20:44:09Z", "ms": 494801048993.0116 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-04", "window": { "start": { "local": "1985-09-04T11:43:46+02:00", "utc": "1985-09-04T09:43:46Z", "ms": 494675025740.0657 }, "end": { "local": "1985-09-04T12:31:46+02:00", "utc": "1985-09-04T10:31:46Z", "ms": 494677905740.0657 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-05", "window": { "start": { "local": "1985-09-05T11:43:26+02:00", "utc": "1985-09-05T09:43:26Z", "ms": 494761405855.76086 }, "end": { "local": "1985-09-05T12:31:26+02:00", "utc": "1985-09-05T10:31:26Z", "ms": 494764285855.76086 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:07 on Wed 4 Sep to 22:44 on Thu 5 Sep.", "fact": "1985-09-04T18:07:01Z → 1985-09-05T20:44:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 4th, 11:43–12:31 on the 5th.", "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 4th and 48 of 48 on the 5th.", "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 27315 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Soweto, 1985: Thursday 5 September.", "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": "1985-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-05", "confidence": "determinate" } ], "quote": "In Soweto, Hala Ṣaṣṭhī 1985 falls on Thursday 5 September. Ṣaṣṭhī runs from 20:07 on Wed 4 Sep to 22:44 on Thu 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36763, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-09-05T22:44:09+02:00", "utc": "1985-09-05T20:44:09Z", "ms": 494801048993.0116 }, "end": { "local": "1985-09-07T01:10:56+02:00", "utc": "1985-09-06T23:10:56Z", "ms": 494896255728.9456 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-05T22:44:09+02:00", "utc": "1985-09-05T20:44:09Z", "ms": 494801048993.0116 }, "end": { "local": "1985-09-07T01:10:56+02:00", "utc": "1985-09-06T23:10:56Z", "ms": 494896255728.9456 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-05", "window": { "start": { "local": "1985-09-05T11:43:26+02:00", "utc": "1985-09-05T09:43:26Z", "ms": 494761405855.76086 }, "end": { "local": "1985-09-05T12:31:26+02:00", "utc": "1985-09-05T10:31:26Z", "ms": 494764285855.76086 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-06", "window": { "start": { "local": "1985-09-06T11:43:06+02:00", "utc": "1985-09-06T09:43:06Z", "ms": 494847785759.55835 }, "end": { "local": "1985-09-06T12:31:06+02:00", "utc": "1985-09-06T10:31:06Z", "ms": 494850665759.55835 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:44 on Thu 5 Sep to 01:11 on Sat 7 Sep.", "fact": "1985-09-05T20:44:09Z → 1985-09-06T23:10:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 5th, 11:43–12:31 on the 6th.", "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 5th and 48 of 48 on the 6th.", "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 36763 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Soweto, 1985: Friday 6 September.", "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": "1985-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-06", "confidence": "determinate" } ], "quote": "In Soweto, Śītalā Saptamī 1985 falls on Friday 6 September. Saptamī runs from 22:44 on Thu 5 Sep to 01:11 on Sat 7 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2422, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-09-07T01:10:56+02:00", "utc": "1985-09-06T23:10:56Z", "ms": 494896255728.9456 }, "end": { "local": "1985-09-08T03:12:27+02:00", "utc": "1985-09-08T01:12:27Z", "ms": 494989947225.7653 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-07T01:10:56+02:00", "utc": "1985-09-06T23:10:56Z", "ms": 494896255728.9456 }, "end": { "local": "1985-09-08T03:12:27+02:00", "utc": "1985-09-08T01:12:27Z", "ms": 494989947225.7653 } }, "kaala": "nishita", "days": [ { "local_date": "1985-09-06", "window": { "start": { "local": "1985-09-06T23:42:33+02:00", "utc": "1985-09-06T21:42:33Z", "ms": 494890953311.6316 }, "end": { "local": "1985-09-07T00:30:33+02:00", "utc": "1985-09-06T22:30:33Z", "ms": 494893833311.6316 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-07", "window": { "start": { "local": "1985-09-07T23:42:13+02:00", "utc": "1985-09-07T21:42:13Z", "ms": 494977332860.9396 }, "end": { "local": "1985-09-08T00:30:13+02:00", "utc": "1985-09-07T22:30:13Z", "ms": 494980212860.9396 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:11 on Sat 7 Sep to 03:12 on Sun 8 Sep.", "fact": "1985-09-06T23:10:56Z → 1985-09-08T01:12:27Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:43–00:31 on the 6th, 23:42–00:30 on the 7th.", "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 6th and 48 of 48 on the 7th.", "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 2422 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Soweto, 1985: Saturday 7 September.", "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": "1985-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-07", "confidence": "determinate" } ], "quote": "In Soweto, Janmāṣṭamī 1985 falls on Saturday 7 September. Aṣṭamī runs from 01:11 on Sat 7 Sep to 03:12 on Sun 8 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-09-10", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3469, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-09-10T05:14:10+02:00", "utc": "1985-09-10T03:14:10Z", "ms": 495170050249.4091 }, "end": { "local": "1985-09-11T05:02:51+02:00", "utc": "1985-09-11T03:02:51Z", "ms": 495255771002.35297 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-10T05:14:10+02:00", "utc": "1985-09-10T03:14:10Z", "ms": 495170050249.4091 }, "end": { "local": "1985-09-11T05:02:51+02:00", "utc": "1985-09-11T03:02:51Z", "ms": 495255771002.35297 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-09-10", "window": { "start": { "local": "1985-09-10T06:11:59+02:00", "utc": "1985-09-10T04:11:59Z", "ms": 495173519101.7446 }, "end": { "local": "1985-09-10T06:11:59+02:00", "utc": "1985-09-10T04:11:59Z", "ms": 495173519101.7446 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-09-11", "window": { "start": { "local": "1985-09-11T06:10:53+02:00", "utc": "1985-09-11T04:10:53Z", "ms": 495259853065.52466 }, "end": { "local": "1985-09-11T06:10:53+02:00", "utc": "1985-09-11T04:10:53Z", "ms": 495259853065.52466 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:14 on Tue 10 Sep to 05:03 on Wed 11 Sep.", "fact": "1985-09-10T03:14:10Z → 1985-09-11T03:02:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:12 on the 10th and 06:11 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 3469 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Soweto, 1985: Tuesday 10 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": "1985-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-10", "confidence": "determinate" } ], "quote": "In Soweto, Ajā Ekādaśī 1985 falls on Tuesday 10 September. Ekādaśī runs from 05:14 on Tue 10 Sep to 05:03 on Wed 11 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-09-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-09-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24247, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-09-12T04:03:38+02:00", "utc": "1985-09-12T02:03:38Z", "ms": 495338618288.9172 }, "end": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-12T04:03:38+02:00", "utc": "1985-09-12T02:03:38Z", "ms": 495338618288.9172 }, "end": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-09-11", "window": { "start": { "local": "1985-09-11T17:59:52+02:00", "utc": "1985-09-11T15:59:52Z", "ms": 495302392445.02155 }, "end": { "local": "1985-09-11T19:37:12+02:00", "utc": "1985-09-11T17:37:12Z", "ms": 495308231693.20544 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1985-09-12", "window": { "start": { "local": "1985-09-12T18:00:17+02:00", "utc": "1985-09-12T16:00:17Z", "ms": 495388816745.33215 }, "end": { "local": "1985-09-12T19:37:24+02:00", "utc": "1985-09-12T17:37:24Z", "ms": 495394643892.3874 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:04 on Thu 12 Sep to 02:22 on Fri 13 Sep.", "fact": "1985-09-12T02:03:38Z → 1985-09-13T00:21:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:37 on the 11th, 18:00–19:37 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 97 minutes on the 11th and 97 of 97 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24247 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Thursday 12 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": "1985-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-12", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Thursday 12 September. Trayodaśī runs from 04:04 on Thu 12 Sep to 02:22 on Fri 13 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-09-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15983, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 }, "end": { "local": "1985-09-14T00:03:59+02:00", "utc": "1985-09-13T22:03:59Z", "ms": 495497038742.24146 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 }, "end": { "local": "1985-09-14T00:03:59+02:00", "utc": "1985-09-13T22:03:59Z", "ms": 495497038742.24146 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-09-12", "window": { "start": { "local": "1985-09-12T18:00:17+02:00", "utc": "1985-09-12T16:00:17Z", "ms": 495388816745.33215 }, "end": { "local": "1985-09-12T19:37:24+02:00", "utc": "1985-09-12T17:37:24Z", "ms": 495394643892.3874 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1985-09-13", "window": { "start": { "local": "1985-09-13T18:00:41+02:00", "utc": "1985-09-13T16:00:41Z", "ms": 495475241071.6309 }, "end": { "local": "1985-09-13T19:37:36+02:00", "utc": "1985-09-13T17:37:36Z", "ms": 495481056090.65546 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:22 on Fri 13 Sep to 00:04 on Sat 14 Sep.", "fact": "1985-09-13T00:21:31Z → 1985-09-13T22:03:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:37 on the 12th, 18:01–19:38 on the 13th.", "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 97 minutes on the 12th and 97 of 97 on the 13th.", "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 15983 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Soweto, 1985: Friday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-13", "confidence": "determinate" } ], "quote": "In Soweto, Aghora Caturdaśī 1985 falls on Friday 13 September. Caturdaśī runs from 02:22 on Fri 13 Sep to 00:04 on Sat 14 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/shivaratri?on=1985-09-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1431, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 }, "end": { "local": "1985-09-14T00:03:59+02:00", "utc": "1985-09-13T22:03:59Z", "ms": 495497038742.24146 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-13T02:21:31+02:00", "utc": "1985-09-13T00:21:31Z", "ms": 495418891260.2602 }, "end": { "local": "1985-09-14T00:03:59+02:00", "utc": "1985-09-13T22:03:59Z", "ms": 495497038742.24146 } }, "kaala": "nishita", "days": [ { "local_date": "1985-09-12", "window": { "start": { "local": "1985-09-12T23:40:29+02:00", "utc": "1985-09-12T21:40:29Z", "ms": 495409228546.7892 }, "end": { "local": "1985-09-13T00:28:29+02:00", "utc": "1985-09-12T22:28:29Z", "ms": 495412108546.7892 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-13", "window": { "start": { "local": "1985-09-13T23:40:07+02:00", "utc": "1985-09-13T21:40:07Z", "ms": 495495607392.9729 }, "end": { "local": "1985-09-14T00:28:07+02:00", "utc": "1985-09-13T22:28:07Z", "ms": 495498487392.9729 } }, "covered_min": 24, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:22 on Fri 13 Sep to 00:04 on Sat 14 Sep.", "fact": "1985-09-13T00:21:31Z → 1985-09-13T22:03:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 12th, 23:40–00:28 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 24 of 48 on the 13th.", "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 1431 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Friday 13 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": "1985-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-13", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Friday 13 September. Caturdaśī runs from 02:22 on Fri 13 Sep to 00:04 on Sat 14 Sep and covers 24 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-09-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21045, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-09-14T21:19:54+02:00", "utc": "1985-09-14T19:19:54Z", "ms": 495573594215.1342 }, "end": { "local": "1985-09-15T18:18:43+02:00", "utc": "1985-09-15T16:18:43Z", "ms": 495649123261.41016 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-14T21:19:54+02:00", "utc": "1985-09-14T19:19:54Z", "ms": 495573594215.1342 }, "end": { "local": "1985-09-15T18:18:43+02:00", "utc": "1985-09-15T16:18:43Z", "ms": 495649123261.41016 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-14", "window": { "start": { "local": "1985-09-14T11:40:20+02:00", "utc": "1985-09-14T09:40:20Z", "ms": 495538819573.297 }, "end": { "local": "1985-09-14T12:28:20+02:00", "utc": "1985-09-14T10:28:20Z", "ms": 495541699573.297 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-15", "window": { "start": { "local": "1985-09-15T11:39:58+02:00", "utc": "1985-09-15T09:39:58Z", "ms": 495625198381.30396 }, "end": { "local": "1985-09-15T12:27:58+02:00", "utc": "1985-09-15T10:27:58Z", "ms": 495628078381.30396 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:20 on Sat 14 Sep to 18:19 on Sun 15 Sep.", "fact": "1985-09-14T19:19:54Z → 1985-09-15T16:18:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 14th, 11:40–12:28 on the 15th.", "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 14th and 48 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: purvaviddha → only-day · margin 21045 s" }, { "step": "ruling", "text": "Rudra Vrata, Soweto, 1985: Sunday 15 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-15", "confidence": "determinate" } ], "quote": "In Soweto, Rudra Vrata 1985 falls on Sunday 15 September. Pratipadā runs from 21:20 on Sat 14 Sep to 18:19 on Sun 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1342, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-09-17T12:01:38+02:00", "utc": "1985-09-17T10:01:38Z", "ms": 495799298110.90894 }, "end": { "local": "1985-09-18T09:02:09+02:00", "utc": "1985-09-18T07:02:09Z", "ms": 495874929086.5707 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-17T12:01:38+02:00", "utc": "1985-09-17T10:01:38Z", "ms": 495799298110.90894 }, "end": { "local": "1985-09-18T09:02:09+02:00", "utc": "1985-09-18T07:02:09Z", "ms": 495874929086.5707 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-17", "window": { "start": { "local": "1985-09-17T11:39:16+02:00", "utc": "1985-09-17T09:39:16Z", "ms": 495797955892.2947 }, "end": { "local": "1985-09-17T12:27:16+02:00", "utc": "1985-09-17T10:27:16Z", "ms": 495800835892.2947 } }, "covered_min": 26, "window_min": 48, "qualifies": true }, { "local_date": "1985-09-18", "window": { "start": { "local": "1985-09-18T11:38:55+02:00", "utc": "1985-09-18T09:38:55Z", "ms": 495884334626.7494 }, "end": { "local": "1985-09-18T12:26:55+02:00", "utc": "1985-09-18T10:26:55Z", "ms": 495887214626.7494 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:02 on Tue 17 Sep to 09:02 on Wed 18 Sep.", "fact": "1985-09-17T10:01:38Z → 1985-09-18T07:02:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 17th, 11:39–12:27 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 26 of 48 minutes on the 17th and 0 of 48 on the 18th.", "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 1342 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Soweto, 1985: Tuesday 17 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-17", "confidence": "determinate" } ], "quote": "In Soweto, Gaṇeśa Caturthī 1985 falls on Tuesday 17 September. Caturthī runs from 12:02 on Tue 17 Sep to 09:02 on Wed 18 Sep and covers 26 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1342, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1985-09-16T15:09:44+02:00", "utc": "1985-09-16T13:09:44Z", "ms": 495724184023.38794 }, "end": { "local": "1985-09-17T12:01:38+02:00", "utc": "1985-09-17T10:01:38Z", "ms": 495799298110.90894 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-16T15:09:44+02:00", "utc": "1985-09-16T13:09:44Z", "ms": 495724184023.38794 }, "end": { "local": "1985-09-17T12:01:38+02:00", "utc": "1985-09-17T10:01:38Z", "ms": 495799298110.90894 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-16", "window": { "start": { "local": "1985-09-16T11:39:37+02:00", "utc": "1985-09-16T09:39:37Z", "ms": 495711577149.16174 }, "end": { "local": "1985-09-16T12:27:37+02:00", "utc": "1985-09-16T10:27:37Z", "ms": 495714457149.16174 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-17", "window": { "start": { "local": "1985-09-17T11:39:16+02:00", "utc": "1985-09-17T09:39:16Z", "ms": 495797955892.2947 }, "end": { "local": "1985-09-17T12:27:16+02:00", "utc": "1985-09-17T10:27:16Z", "ms": 495800835892.2947 } }, "covered_min": 22, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:10 on Mon 16 Sep to 12:02 on Tue 17 Sep.", "fact": "1985-09-16T13:09:44Z → 1985-09-17T10:01:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 16th, 11:39–12:27 on the 17th.", "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 16th and 22 of 48 on the 17th.", "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 1342 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Soweto, 1985: Tuesday 17 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-17", "confidence": "determinate" } ], "quote": "In Soweto, Haritālikā Vrata (Hartalika Teej) 1985 falls on Tuesday 17 September. Tṛtīyā runs from 15:10 on Mon 16 Sep to 12:02 on Tue 17 Sep and covers 22 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9406, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-09-18T09:02:09+02:00", "utc": "1985-09-18T07:02:09Z", "ms": 495874929086.5707 }, "end": { "local": "1985-09-19T06:17:47+02:00", "utc": "1985-09-19T04:17:47Z", "ms": 495951466807.20996 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-18T09:02:09+02:00", "utc": "1985-09-18T07:02:09Z", "ms": 495874929086.5707 }, "end": { "local": "1985-09-19T06:17:47+02:00", "utc": "1985-09-19T04:17:47Z", "ms": 495951466807.20996 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-18", "window": { "start": { "local": "1985-09-18T11:38:55+02:00", "utc": "1985-09-18T09:38:55Z", "ms": 495884334626.7494 }, "end": { "local": "1985-09-18T12:26:55+02:00", "utc": "1985-09-18T10:26:55Z", "ms": 495887214626.7494 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-09-19", "window": { "start": { "local": "1985-09-19T11:38:33+02:00", "utc": "1985-09-19T09:38:33Z", "ms": 495970713369.5259 }, "end": { "local": "1985-09-19T12:26:33+02:00", "utc": "1985-09-19T10:26:33Z", "ms": 495973593369.5259 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 09:02 on Wed 18 Sep to 06:18 on Thu 19 Sep.", "fact": "1985-09-18T07:02:09Z → 1985-09-19T04:17:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 18th, 11:39–12:27 on the 19th.", "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 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 9406 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Soweto, 1985: Wednesday 18 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-18", "confidence": "determinate" } ], "quote": "In Soweto, Ṛṣi Pañcamī 1985 falls on Wednesday 18 September. Pañcamī runs from 09:02 on Wed 18 Sep to 06:18 on Thu 19 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19247, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-09-19T06:17:47+02:00", "utc": "1985-09-19T04:17:47Z", "ms": 495951466807.20996 }, "end": { "local": "1985-09-20T03:53:37+02:00", "utc": "1985-09-20T01:53:37Z", "ms": 496029217491.65594 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-19T06:17:47+02:00", "utc": "1985-09-19T04:17:47Z", "ms": 495951466807.20996 }, "end": { "local": "1985-09-20T03:53:37+02:00", "utc": "1985-09-20T01:53:37Z", "ms": 496029217491.65594 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-19", "window": { "start": { "local": "1985-09-19T11:38:33+02:00", "utc": "1985-09-19T09:38:33Z", "ms": 495970713369.5259 }, "end": { "local": "1985-09-19T12:26:33+02:00", "utc": "1985-09-19T10:26:33Z", "ms": 495973593369.5259 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-09-20", "window": { "start": { "local": "1985-09-20T11:38:12+02:00", "utc": "1985-09-20T09:38:12Z", "ms": 496057092138.7716 }, "end": { "local": "1985-09-20T12:26:12+02:00", "utc": "1985-09-20T10:26:12Z", "ms": 496059972138.7716 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:18 on Thu 19 Sep to 03:54 on Fri 20 Sep.", "fact": "1985-09-19T04:17:47Z → 1985-09-20T01:53:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 19th, 11:38–12:26 on the 20th.", "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 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19247 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Soweto, 1985: Thursday 19 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-19", "confidence": "determinate" } ], "quote": "In Soweto, Sūrya Ṣaṣṭhī (Bhādrapada) 1985 falls on Thursday 19 September. Ṣaṣṭhī runs from 06:18 on Thu 19 Sep to 03:54 on Fri 20 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27875, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-09-20T03:53:37+02:00", "utc": "1985-09-20T01:53:37Z", "ms": 496029217491.65594 }, "end": { "local": "1985-09-21T01:53:21+02:00", "utc": "1985-09-20T23:53:21Z", "ms": 496108400634.3963 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-20T03:53:37+02:00", "utc": "1985-09-20T01:53:37Z", "ms": 496029217491.65594 }, "end": { "local": "1985-09-21T01:53:21+02:00", "utc": "1985-09-20T23:53:21Z", "ms": 496108400634.3963 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-20", "window": { "start": { "local": "1985-09-20T11:38:12+02:00", "utc": "1985-09-20T09:38:12Z", "ms": 496057092138.7716 }, "end": { "local": "1985-09-20T12:26:12+02:00", "utc": "1985-09-20T10:26:12Z", "ms": 496059972138.7716 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-09-21", "window": { "start": { "local": "1985-09-21T11:37:51+02:00", "utc": "1985-09-21T09:37:51Z", "ms": 496143470953.82715 }, "end": { "local": "1985-09-21T12:25:51+02:00", "utc": "1985-09-21T10:25:51Z", "ms": 496146350953.82715 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:54 on Fri 20 Sep to 01:53 on Sat 21 Sep.", "fact": "1985-09-20T01:53:37Z → 1985-09-20T23:53:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 20th, 11:38–12:26 on the 21st.", "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 20th and 0 of 48 on the 21st.", "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 27875 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Soweto, 1985: Friday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-20", "confidence": "determinate" } ], "quote": "In Soweto, Muktābharaṇa Vrata 1985 falls on Friday 20 September. Saptamī runs from 03:54 on Fri 20 Sep to 01:53 on Sat 21 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35070, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-09-21T01:53:21+02:00", "utc": "1985-09-20T23:53:21Z", "ms": 496108400634.3963 }, "end": { "local": "1985-09-22T00:19:14+02:00", "utc": "1985-09-21T22:19:14Z", "ms": 496189154151.9611 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-21T01:53:21+02:00", "utc": "1985-09-20T23:53:21Z", "ms": 496108400634.3963 }, "end": { "local": "1985-09-22T00:19:14+02:00", "utc": "1985-09-21T22:19:14Z", "ms": 496189154151.9611 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-21", "window": { "start": { "local": "1985-09-21T11:37:51+02:00", "utc": "1985-09-21T09:37:51Z", "ms": 496143470953.82715 }, "end": { "local": "1985-09-21T12:25:51+02:00", "utc": "1985-09-21T10:25:51Z", "ms": 496146350953.82715 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-09-22", "window": { "start": { "local": "1985-09-22T11:37:30+02:00", "utc": "1985-09-22T09:37:30Z", "ms": 496229849835.1468 }, "end": { "local": "1985-09-22T12:25:30+02:00", "utc": "1985-09-22T10:25:30Z", "ms": 496232729835.1468 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:53 on Sat 21 Sep to 00:19 on Sun 22 Sep.", "fact": "1985-09-20T23:53:21Z → 1985-09-21T22:19:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 21st, 11:37–12:25 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 35070 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Soweto, 1985: Saturday 21 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": "1985-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-21", "confidence": "determinate" } ], "quote": "In Soweto, Rādhāṣṭamī 1985 falls on Saturday 21 September. Aṣṭamī runs from 01:53 on Sat 21 Sep to 00:19 on Sun 22 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-09-24", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26578, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-09-23T22:33:25+02:00", "utc": "1985-09-23T20:33:25Z", "ms": 496355604676.7678 }, "end": { "local": "1985-09-24T22:22:01+02:00", "utc": "1985-09-24T20:22:01Z", "ms": 496441320863.58 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-23T22:33:25+02:00", "utc": "1985-09-23T20:33:25Z", "ms": 496355604676.7678 }, "end": { "local": "1985-09-24T22:22:01+02:00", "utc": "1985-09-24T20:22:01Z", "ms": 496441320863.58 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-09-24", "window": { "start": { "local": "1985-09-24T05:56:23+02:00", "utc": "1985-09-24T03:56:23Z", "ms": 496382182838.6593 }, "end": { "local": "1985-09-24T05:56:23+02:00", "utc": "1985-09-24T03:56:23Z", "ms": 496382182838.6593 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-09-25", "window": { "start": { "local": "1985-09-25T05:55:16+02:00", "utc": "1985-09-25T03:55:16Z", "ms": 496468515858.8065 }, "end": { "local": "1985-09-25T05:55:16+02:00", "utc": "1985-09-25T03:55:16Z", "ms": 496468515858.8065 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:33 on Mon 23 Sep to 22:22 on Tue 24 Sep.", "fact": "1985-09-23T20:33:25Z → 1985-09-24T20:22:01Z" }, { "step": "kaala", "text": "Sunrise is at 05:56 on the 24th and 05:55 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 26578 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Soweto, 1985: Tuesday 24 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": "1985-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-24", "confidence": "determinate" } ], "quote": "In Soweto, Parivartanī Ekādaśī 1985 falls on Tuesday 24 September. Ekādaśī runs from 22:33 on Mon 23 Sep to 22:22 on Tue 24 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-09-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35833, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-09-24T22:22:01+02:00", "utc": "1985-09-24T20:22:01Z", "ms": 496441320863.58 }, "end": { "local": "1985-09-25T22:38:06+02:00", "utc": "1985-09-25T20:38:06Z", "ms": 496528685927.489 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-24T22:22:01+02:00", "utc": "1985-09-24T20:22:01Z", "ms": 496441320863.58 }, "end": { "local": "1985-09-25T22:38:06+02:00", "utc": "1985-09-25T20:38:06Z", "ms": 496528685927.489 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-09-24", "window": { "start": { "local": "1985-09-24T11:36:48+02:00", "utc": "1985-09-24T09:36:48Z", "ms": 496402607883.0152 }, "end": { "local": "1985-09-24T12:24:48+02:00", "utc": "1985-09-24T10:24:48Z", "ms": 496405487883.0152 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-09-25", "window": { "start": { "local": "1985-09-25T11:36:27+02:00", "utc": "1985-09-25T09:36:27Z", "ms": 496488987094.5429 }, "end": { "local": "1985-09-25T12:24:27+02:00", "utc": "1985-09-25T10:24:27Z", "ms": 496491867094.5429 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:22 on Tue 24 Sep to 22:38 on Wed 25 Sep.", "fact": "1985-09-24T20:22:01Z → 1985-09-25T20:38:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 24th, 11:36–12:24 on the 25th.", "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 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: unstated → only-day · margin 35833 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Soweto, 1985: Wednesday 25 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": "1985-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-25", "confidence": "determinate" } ], "quote": "In Soweto, Vāmana Jayantī 1985 falls on Wednesday 25 September. Dvādaśī runs from 22:22 on Tue 24 Sep to 22:38 on Wed 25 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-09-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10680, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-09-25T22:38:06+02:00", "utc": "1985-09-25T20:38:06Z", "ms": 496528685927.489 }, "end": { "local": "1985-09-26T23:21:29+02:00", "utc": "1985-09-26T21:21:29Z", "ms": 496617689145.00476 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-25T22:38:06+02:00", "utc": "1985-09-25T20:38:06Z", "ms": 496528685927.489 }, "end": { "local": "1985-09-26T23:21:29+02:00", "utc": "1985-09-26T21:21:29Z", "ms": 496617689145.00476 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-09-25", "window": { "start": { "local": "1985-09-25T18:05:38+02:00", "utc": "1985-09-25T16:05:38Z", "ms": 496512338330.2793 }, "end": { "local": "1985-09-25T19:40:06+02:00", "utc": "1985-09-25T17:40:06Z", "ms": 496518006420.8951 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1985-09-26", "window": { "start": { "local": "1985-09-26T18:06:04+02:00", "utc": "1985-09-26T16:06:04Z", "ms": 496598763913.9836 }, "end": { "local": "1985-09-26T19:40:20+02:00", "utc": "1985-09-26T17:40:20Z", "ms": 496604419701.5885 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:38 on Wed 25 Sep to 23:21 on Thu 26 Sep.", "fact": "1985-09-25T20:38:06Z → 1985-09-26T21:21:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:06–19:40 on the 25th, 18:06–19:40 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 0 of 94 minutes on the 25th and 94 of 94 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 10680 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Thursday 26 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": "1985-09-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-26", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Thursday 26 September. Trayodaśī runs from 22:38 on Wed 25 Sep to 23:21 on Thu 26 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-09-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19203, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-09-26T23:21:29+02:00", "utc": "1985-09-26T21:21:29Z", "ms": 496617689145.00476 }, "end": { "local": "1985-09-28T00:31:53+02:00", "utc": "1985-09-27T22:31:53Z", "ms": 496708312541.94415 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1985-09-26T23:21:29+02:00", "utc": "1985-09-26T21:21:29Z", "ms": 496617689145.00476 }, "end": { "local": "1985-09-28T00:31:53+02:00", "utc": "1985-09-27T22:31:53Z", "ms": 496708312541.94415 } }, "kaala": "udaya-3", "days": [ { "local_date": "1985-09-27", "window": { "start": { "local": "1985-09-27T05:53:02+02:00", "utc": "1985-09-27T03:53:02Z", "ms": 496641182321.02026 }, "end": { "local": "1985-09-27T08:19:44+02:00", "utc": "1985-09-27T06:19:44Z", "ms": 496649983796.086 } }, "covered_min": 147, "window_min": 147, "qualifies": true }, { "local_date": "1985-09-28", "window": { "start": { "local": "1985-09-28T05:51:56+02:00", "utc": "1985-09-28T03:51:56Z", "ms": 496727515821.34705 }, "end": { "local": "1985-09-28T08:18:56+02:00", "utc": "1985-09-28T06:18:56Z", "ms": 496736335796.1545 } }, "covered_min": 0, "window_min": 147, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:21 on Thu 26 Sep to 00:32 on Sat 28 Sep.", "fact": "1985-09-26T21:21:29Z → 1985-09-27T22:31:53Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:53–08:20 on the 27th, 05:52–08:19 on the 28th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 147 of 147 minutes on the 27th and 0 of 147 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19203 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Soweto, 1985: Friday 27 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-09-27", "confidence": "determinate" } ], "quote": "In Soweto, Ananta Caturdaśī 1985 falls on Friday 27 September. Caturdaśī runs from 23:21 on Thu 26 Sep to 00:32 on Sat 28 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-10-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37448, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-10-02T09:06:27+02:00", "utc": "1985-10-02T07:06:27Z", "ms": 497084787185.58264 }, "end": { "local": "1985-10-03T11:47:36+02:00", "utc": "1985-10-03T09:47:36Z", "ms": 497180856446.51636 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-02T09:06:27+02:00", "utc": "1985-10-02T07:06:27Z", "ms": 497084787185.58264 }, "end": { "local": "1985-10-03T11:47:36+02:00", "utc": "1985-10-03T09:47:36Z", "ms": 497180856446.51636 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-10-02", "window": { "start": { "local": "1985-10-02T21:16:56+02:00", "utc": "1985-10-02T19:16:56Z", "ms": 497128616130.161 }, "end": { "local": "1985-10-02T21:16:56+02:00", "utc": "1985-10-02T19:16:56Z", "ms": 497128616130.161 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-10-03", "window": { "start": { "local": "1985-10-03T22:11:45+02:00", "utc": "1985-10-03T20:11:45Z", "ms": 497218304835.84906 }, "end": { "local": "1985-10-03T22:11:45+02:00", "utc": "1985-10-03T20:11:45Z", "ms": 497218304835.84906 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:06 on Wed 2 Oct to 11:48 on Thu 3 Oct.", "fact": "1985-10-02T07:06:27Z → 1985-10-03T09:47:36Z" }, { "step": "kaala", "text": "Moonrise is at 21:17 on the 2nd and 22:12 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37448 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Wednesday 2 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": "1985-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-02", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Wednesday 2 October. Caturthī runs from 09:06 on Wed 2 Oct to 11:48 on Thu 3 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-10-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26586, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-10-04T14:22:54+02:00", "utc": "1985-10-04T12:22:54Z", "ms": 497276573883.53674 }, "end": { "local": "1985-10-05T16:39:44+02:00", "utc": "1985-10-05T14:39:44Z", "ms": 497371183925.4441 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-04T14:22:54+02:00", "utc": "1985-10-04T12:22:54Z", "ms": 497276573883.53674 }, "end": { "local": "1985-10-05T16:39:44+02:00", "utc": "1985-10-05T14:39:44Z", "ms": 497371183925.4441 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-10-04", "window": { "start": { "local": "1985-10-04T23:07:23+02:00", "utc": "1985-10-04T21:07:23Z", "ms": 497308043485.78955 }, "end": { "local": "1985-10-04T23:07:23+02:00", "utc": "1985-10-04T21:07:23Z", "ms": 497308043485.78955 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-10-05", "window": { "start": { "local": "1985-10-06T00:02:50+02:00", "utc": "1985-10-05T22:02:50Z", "ms": 497397769525.8155 }, "end": { "local": "1985-10-06T00:02:50+02:00", "utc": "1985-10-05T22:02:50Z", "ms": 497397769525.8155 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:23 on Fri 4 Oct to 16:40 on Sat 5 Oct.", "fact": "1985-10-04T12:22:54Z → 1985-10-05T14:39:44Z" }, { "step": "kaala", "text": "Moonrise is at 23:07 on the 4th and 00:03 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 4th and is not on the 5th.", "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 26586 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Soweto, 1985: Friday 4 October.", "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": "1985-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-04", "confidence": "determinate" } ], "quote": "In Soweto, Candra Ṣaṣṭhī 1985 falls on Friday 4 October. Ṣaṣṭhī runs from 14:23 on Fri 4 Oct to 16:40 on Sat 5 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22566, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-10-06T18:25:51+02:00", "utc": "1985-10-06T16:25:51Z", "ms": 497463951108.1558 }, "end": { "local": "1985-10-07T19:31:07+02:00", "utc": "1985-10-07T17:31:07Z", "ms": 497554266625.61346 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-06T18:25:51+02:00", "utc": "1985-10-06T16:25:51Z", "ms": 497463951108.1558 }, "end": { "local": "1985-10-07T19:31:07+02:00", "utc": "1985-10-07T17:31:07Z", "ms": 497554266625.61346 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-10-06", "window": { "start": { "local": "1985-10-07T00:56:35+02:00", "utc": "1985-10-06T22:56:35Z", "ms": 497487394560.20496 }, "end": { "local": "1985-10-07T00:56:35+02:00", "utc": "1985-10-06T22:56:35Z", "ms": 497487394560.20496 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-10-07", "window": { "start": { "local": "1985-10-08T01:47:12+02:00", "utc": "1985-10-07T23:47:12Z", "ms": 497576832461.2882 }, "end": { "local": "1985-10-08T01:47:12+02:00", "utc": "1985-10-07T23:47:12Z", "ms": 497576832461.2882 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:26 on Sun 6 Oct to 19:31 on Mon 7 Oct.", "fact": "1985-10-06T16:25:51Z → 1985-10-07T17:31:07Z" }, { "step": "kaala", "text": "Moonrise is at 00:57 on the 6th and 01:47 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 6th and is not on the 7th.", "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 22566 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Soweto, 1985: Sunday 6 October.", "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": "1985-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-06", "confidence": "determinate" } ], "quote": "In Soweto, Mahālakṣmī Vrata Samāpana 1985 falls on Sunday 6 October. Aṣṭamī runs from 18:26 on Sun 6 Oct to 19:31 on Mon 7 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-07", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 716, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-10-06T18:25:51+02:00", "utc": "1985-10-06T16:25:51Z", "ms": 497463951108.1558 }, "end": { "local": "1985-10-07T19:31:07+02:00", "utc": "1985-10-07T17:31:07Z", "ms": 497554266625.61346 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-06T18:25:51+02:00", "utc": "1985-10-06T16:25:51Z", "ms": 497463951108.1558 }, "end": { "local": "1985-10-07T19:31:07+02:00", "utc": "1985-10-07T17:31:07Z", "ms": 497554266625.61346 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-10-06", "window": { "start": { "local": "1985-10-06T18:10:34+02:00", "utc": "1985-10-06T16:10:34Z", "ms": 497463033556.5782 }, "end": { "local": "1985-10-06T19:42:47+02:00", "utc": "1985-10-06T17:42:47Z", "ms": 497468566501.56213 } }, "covered_min": 77, "window_min": 92, "qualifies": true }, { "local_date": "1985-10-07", "window": { "start": { "local": "1985-10-07T18:11:02+02:00", "utc": "1985-10-07T16:11:02Z", "ms": 497549462257.44055 }, "end": { "local": "1985-10-07T19:43:03+02:00", "utc": "1985-10-07T17:43:03Z", "ms": 497554982974.16064 } }, "covered_min": 80, "window_min": 92, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:26 on Sun 6 Oct to 19:31 on Mon 7 Oct.", "fact": "1985-10-06T16:25:51Z → 1985-10-07T17:31:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:11–19:43 on the 6th, 18:11–19:43 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 77 of 92 minutes on the 6th and 80 of 92 on the 7th.", "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 716 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Soweto, 1985: Monday 7 October.", "fact": "confidence: boundary (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": "1985-10-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-06", "confidence": "boundary" } ], "quote": "In Soweto, Jitāṣṭamī (Jitiya) 1985 falls on Monday 7 October. Aṣṭamī runs from 18:26 on Sun 6 Oct to 19:31 on Mon 7 Oct and covers 80 of 92 minutes of pradoṣa that evening. It also reaches the previous evening for 77 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/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-10-10", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37350, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-10-09T19:16:33+02:00", "utc": "1985-10-09T17:16:33Z", "ms": 497726193369.7967 }, "end": { "local": "1985-10-10T17:55:41+02:00", "utc": "1985-10-10T15:55:41Z", "ms": 497807740980.5138 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-09T19:16:33+02:00", "utc": "1985-10-09T17:16:33Z", "ms": 497726193369.7967 }, "end": { "local": "1985-10-10T17:55:41+02:00", "utc": "1985-10-10T15:55:41Z", "ms": 497807740980.5138 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-10-10", "window": { "start": { "local": "1985-10-10T05:39:03+02:00", "utc": "1985-10-10T03:39:03Z", "ms": 497763543155.7108 }, "end": { "local": "1985-10-10T05:39:03+02:00", "utc": "1985-10-10T03:39:03Z", "ms": 497763543155.7108 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-10-11", "window": { "start": { "local": "1985-10-11T05:38:02+02:00", "utc": "1985-10-11T03:38:02Z", "ms": 497849881744.3291 }, "end": { "local": "1985-10-11T05:38:02+02:00", "utc": "1985-10-11T03:38:02Z", "ms": 497849881744.3291 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:17 on Wed 9 Oct to 17:56 on Thu 10 Oct.", "fact": "1985-10-09T17:16:33Z → 1985-10-10T15:55:41Z" }, { "step": "kaala", "text": "Sunrise is at 05:39 on the 10th and 05:38 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 37350 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Soweto, 1985: Thursday 10 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": "1985-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-10", "confidence": "determinate" } ], "quote": "In Soweto, Indirā Ekādaśī 1985 falls on Thursday 10 October. Ekādaśī runs from 19:17 on Wed 9 Oct to 17:56 on Thu 10 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-10-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-10-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8520, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-10-11T15:51:01+02:00", "utc": "1985-10-11T13:51:01Z", "ms": 497886661010.1112 }, "end": { "local": "1985-10-12T13:09:46+02:00", "utc": "1985-10-12T11:09:46Z", "ms": 497963385583.3642 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-11T15:51:01+02:00", "utc": "1985-10-11T13:51:01Z", "ms": 497886661010.1112 }, "end": { "local": "1985-10-12T13:09:46+02:00", "utc": "1985-10-12T11:09:46Z", "ms": 497963385583.3642 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-10-11", "window": { "start": { "local": "1985-10-11T18:13:01+02:00", "utc": "1985-10-11T16:13:01Z", "ms": 497895180877.8462 }, "end": { "local": "1985-10-11T19:44:13+02:00", "utc": "1985-10-11T17:44:13Z", "ms": 497900652883.4299 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1985-10-12", "window": { "start": { "local": "1985-10-12T18:13:32+02:00", "utc": "1985-10-12T16:13:32Z", "ms": 497981611531.2016 }, "end": { "local": "1985-10-12T19:44:31+02:00", "utc": "1985-10-12T17:44:31Z", "ms": 497987071421.351 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:51 on Fri 11 Oct to 13:10 on Sat 12 Oct.", "fact": "1985-10-11T13:51:01Z → 1985-10-12T11:09:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:44 on the 11th, 18:14–19:45 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 91 of 91 minutes on the 11th and 0 of 91 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 8520 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Friday 11 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": "1985-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-11", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Friday 11 October. Trayodaśī runs from 15:51 on Fri 11 Oct to 13:10 on Sat 12 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-10-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-10-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34914, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-10-12T13:09:46+02:00", "utc": "1985-10-12T11:09:46Z", "ms": 497963385583.3642 }, "end": { "local": "1985-10-13T10:00:40+02:00", "utc": "1985-10-13T08:00:40Z", "ms": 498038439645.5537 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-12T13:09:46+02:00", "utc": "1985-10-12T11:09:46Z", "ms": 497963385583.3642 }, "end": { "local": "1985-10-13T10:00:40+02:00", "utc": "1985-10-13T08:00:40Z", "ms": 498038439645.5537 } }, "kaala": "nishita", "days": [ { "local_date": "1985-10-11", "window": { "start": { "local": "1985-10-11T23:31:01+02:00", "utc": "1985-10-11T21:31:01Z", "ms": 497914260898.7849 }, "end": { "local": "1985-10-12T00:19:01+02:00", "utc": "1985-10-11T22:19:01Z", "ms": 497917140898.7849 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-10-12", "window": { "start": { "local": "1985-10-12T23:30:46+02:00", "utc": "1985-10-12T21:30:46Z", "ms": 498000646119.26196 }, "end": { "local": "1985-10-13T00:18:46+02:00", "utc": "1985-10-12T22:18:46Z", "ms": 498003526119.26196 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:10 on Sat 12 Oct to 10:01 on Sun 13 Oct.", "fact": "1985-10-12T11:09:46Z → 1985-10-13T08:00:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:31–00:19 on the 11th, 23:31–00:19 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34914 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Saturday 12 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": "1985-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-12", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Saturday 12 October. Caturdaśī runs from 13:10 on Sat 12 Oct to 10:01 on Sun 13 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11410, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1985-10-13T10:00:40+02:00", "utc": "1985-10-13T08:00:40Z", "ms": 498038439645.5537 }, "end": { "local": "1985-10-14T06:33:18+02:00", "utc": "1985-10-14T04:33:18Z", "ms": 498112397672.5267 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-13T10:00:40+02:00", "utc": "1985-10-13T08:00:40Z", "ms": 498038439645.5537 }, "end": { "local": "1985-10-14T06:33:18+02:00", "utc": "1985-10-14T04:33:18Z", "ms": 498112397672.5267 } }, "kaala": "aparahna", "days": [ { "local_date": "1985-10-13", "window": { "start": { "local": "1985-10-13T13:10:50+02:00", "utc": "1985-10-13T11:10:50Z", "ms": 498049849840.68134 }, "end": { "local": "1985-10-13T15:42:26+02:00", "utc": "1985-10-13T13:42:26Z", "ms": 498058946218.46765 } }, "covered_min": 152, "window_min": 152, "qualifies": true }, { "local_date": "1985-10-14", "window": { "start": { "local": "1985-10-14T13:10:45+02:00", "utc": "1985-10-14T11:10:45Z", "ms": 498136244898.6611 }, "end": { "local": "1985-10-14T15:42:39+02:00", "utc": "1985-10-14T13:42:39Z", "ms": 498145359487.65674 } }, "covered_min": 0, "window_min": 152, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 10:01 on Sun 13 Oct to 06:33 on Mon 14 Oct.", "fact": "1985-10-13T08:00:40Z → 1985-10-14T04:33:18Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:11–15:42 on the 13th, 13:11–15:43 on the 14th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 152 of 152 minutes on the 13th and 0 of 152 on the 14th.", "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 11410 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Soweto, 1985: Sunday 13 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-13", "confidence": "determinate" } ], "quote": "In Soweto, Mahālaya Amāvāsyā 1985 falls on Sunday 13 October. Amāvasyā runs from 10:01 on Sun 13 Oct to 06:33 on Mon 14 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17850, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-10-14T06:33:18+02:00", "utc": "1985-10-14T04:33:18Z", "ms": 498112397672.5267 }, "end": { "local": "1985-10-15T02:57:31+02:00", "utc": "1985-10-15T00:57:31Z", "ms": 498185850901.8728 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-14T06:33:18+02:00", "utc": "1985-10-14T04:33:18Z", "ms": 498112397672.5267 }, "end": { "local": "1985-10-15T02:57:31+02:00", "utc": "1985-10-15T00:57:31Z", "ms": 498185850901.8728 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-10-14", "window": { "start": { "local": "1985-10-14T11:30:48+02:00", "utc": "1985-10-14T09:30:48Z", "ms": 498130247604.1632 }, "end": { "local": "1985-10-14T12:18:48+02:00", "utc": "1985-10-14T10:18:48Z", "ms": 498133127604.1632 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-10-15", "window": { "start": { "local": "1985-10-15T11:30:34+02:00", "utc": "1985-10-15T09:30:34Z", "ms": 498216634095.8003 }, "end": { "local": "1985-10-15T12:18:34+02:00", "utc": "1985-10-15T10:18:34Z", "ms": 498219514095.8003 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:33 on Mon 14 Oct to 02:58 on Tue 15 Oct.", "fact": "1985-10-14T04:33:18Z → 1985-10-15T00:57:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 14th, 11:31–12:19 on the 15th.", "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 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17850 s" }, { "step": "ruling", "text": "Navarātrārambha, Soweto, 1985: Monday 14 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-14", "confidence": "determinate" } ], "quote": "In Soweto, Navarātrārambha (Navratri) 1985 falls on Monday 14 October. Pratipadā runs from 06:33 on Mon 14 Oct to 02:58 on Tue 15 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-10-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16576, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-10-16T19:59:10+02:00", "utc": "1985-10-16T17:59:10Z", "ms": 498333550405.22064 }, "end": { "local": "1985-10-17T16:54:25+02:00", "utc": "1985-10-17T14:54:25Z", "ms": 498408864846.3931 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-16T19:59:10+02:00", "utc": "1985-10-16T17:59:10Z", "ms": 498333550405.22064 }, "end": { "local": "1985-10-17T16:54:25+02:00", "utc": "1985-10-17T14:54:25Z", "ms": 498408864846.3931 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-10-16", "window": { "start": { "local": "1985-10-16T11:30:21+02:00", "utc": "1985-10-16T09:30:21Z", "ms": 498303021139.46313 }, "end": { "local": "1985-10-16T12:18:21+02:00", "utc": "1985-10-16T10:18:21Z", "ms": 498305901139.46313 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-10-17", "window": { "start": { "local": "1985-10-17T11:30:09+02:00", "utc": "1985-10-17T09:30:09Z", "ms": 498389408747.99194 }, "end": { "local": "1985-10-17T12:18:09+02:00", "utc": "1985-10-17T10:18:09Z", "ms": 498392288747.99194 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:59 on Wed 16 Oct to 16:54 on Thu 17 Oct.", "fact": "1985-10-16T17:59:10Z → 1985-10-17T14:54:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 16th, 11:30–12:18 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16576 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Thursday 17 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": "1985-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-17", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Thursday 17 October. Caturthī runs from 19:59 on Wed 16 Oct to 16:54 on Thu 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-10-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15701, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-10-19T12:10:43+02:00", "utc": "1985-10-19T10:10:43Z", "ms": 498564643365.29517 }, "end": { "local": "1985-10-20T10:42:13+02:00", "utc": "1985-10-20T08:42:13Z", "ms": 498645733455.0877 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-19T12:10:43+02:00", "utc": "1985-10-19T10:10:43Z", "ms": 498564643365.29517 }, "end": { "local": "1985-10-20T10:42:13+02:00", "utc": "1985-10-20T08:42:13Z", "ms": 498645733455.0877 } }, "kaala": "udaya-1", "days": [ { "local_date": "1985-10-19", "window": { "start": { "local": "1985-10-19T05:30:14+02:00", "utc": "1985-10-19T03:30:14Z", "ms": 498540613644.9553 }, "end": { "local": "1985-10-19T06:21:22+02:00", "utc": "1985-10-19T04:21:22Z", "ms": 498543681920.82434 } }, "covered_min": 0, "window_min": 51, "qualifies": false }, { "local_date": "1985-10-20", "window": { "start": { "local": "1985-10-20T05:29:18+02:00", "utc": "1985-10-20T03:29:18Z", "ms": 498626958400.9266 }, "end": { "local": "1985-10-20T06:20:33+02:00", "utc": "1985-10-20T04:20:33Z", "ms": 498630032627.5583 } }, "covered_min": 51, "window_min": 51, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 12:11 on Sat 19 Oct to 10:42 on Sun 20 Oct.", "fact": "1985-10-19T10:10:43Z → 1985-10-20T08:42:13Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:30–06:21 on the 19th, 05:29–06:21 on the 20th.", "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 51 minutes on the 19th and 51 of 51 on the 20th.", "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 15701 s" }, { "step": "ruling", "text": "Durgā Saptamī, Soweto, 1985: Sunday 20 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-20", "confidence": "determinate" } ], "quote": "In Soweto, Durgā Saptamī 1985 falls on Sunday 20 October. Saptamī runs from 12:11 on Sat 19 Oct to 10:42 on Sun 20 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2842, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-10-20T10:42:13+02:00", "utc": "1985-10-20T08:42:13Z", "ms": 498645733455.0877 }, "end": { "local": "1985-10-21T09:53:07+02:00", "utc": "1985-10-21T07:53:07Z", "ms": 498729187481.1577 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-20T10:42:13+02:00", "utc": "1985-10-20T08:42:13Z", "ms": 498645733455.0877 }, "end": { "local": "1985-10-21T09:53:07+02:00", "utc": "1985-10-21T07:53:07Z", "ms": 498729187481.1577 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-10-20", "window": { "start": { "local": "1985-10-20T11:29:35+02:00", "utc": "1985-10-20T09:29:35Z", "ms": 498648575100.6645 }, "end": { "local": "1985-10-20T12:17:35+02:00", "utc": "1985-10-20T10:17:35Z", "ms": 498651455100.6645 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-10-21", "window": { "start": { "local": "1985-10-21T11:29:25+02:00", "utc": "1985-10-21T09:29:25Z", "ms": 498734965110.6124 }, "end": { "local": "1985-10-21T12:17:25+02:00", "utc": "1985-10-21T10:17:25Z", "ms": 498737845110.6124 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:42 on Sun 20 Oct to 09:53 on Mon 21 Oct.", "fact": "1985-10-20T08:42:13Z → 1985-10-21T07:53:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 20th, 11:29–12:17 on the 21st.", "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 20th and 0 of 48 on the 21st.", "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 2842 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Soweto, 1985: Sunday 20 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Mahastami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-20", "confidence": "determinate" } ], "quote": "In Soweto, Mahāṣṭamī (Durga Ashtami) 1985 falls on Sunday 20 October. Aṣṭamī runs from 10:42 on Sun 20 Oct to 09:53 on Mon 21 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5778, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1985-10-21T09:53:07+02:00", "utc": "1985-10-21T07:53:07Z", "ms": 498729187481.1577 }, "end": { "local": "1985-10-22T09:43:43+02:00", "utc": "1985-10-22T07:43:43Z", "ms": 498815023279.2338 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-21T09:53:07+02:00", "utc": "1985-10-21T07:53:07Z", "ms": 498729187481.1577 }, "end": { "local": "1985-10-22T09:43:43+02:00", "utc": "1985-10-22T07:43:43Z", "ms": 498815023279.2338 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-10-21", "window": { "start": { "local": "1985-10-21T11:29:25+02:00", "utc": "1985-10-21T09:29:25Z", "ms": 498734965110.6124 }, "end": { "local": "1985-10-21T12:17:25+02:00", "utc": "1985-10-21T10:17:25Z", "ms": 498737845110.6124 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-10-22", "window": { "start": { "local": "1985-10-22T11:29:16+02:00", "utc": "1985-10-22T09:29:16Z", "ms": 498821355760.08997 }, "end": { "local": "1985-10-22T12:17:16+02:00", "utc": "1985-10-22T10:17:16Z", "ms": 498824235760.08997 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:53 on Mon 21 Oct to 09:44 on Tue 22 Oct.", "fact": "1985-10-21T07:53:07Z → 1985-10-22T07:43:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 21st, 11:29–12:17 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 5778 s" }, { "step": "ruling", "text": "Mahānavamī, Soweto, 1985: Monday 21 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": "1985-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-21", "confidence": "determinate" } ], "quote": "In Soweto, Mahānavamī 1985 falls on Monday 21 October. Navamī runs from 09:53 on Mon 21 Oct to 09:44 on Tue 22 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 904, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1985-10-22T09:43:43+02:00", "utc": "1985-10-22T07:43:43Z", "ms": 498815023279.2338 }, "end": { "local": "1985-10-23T10:12:20+02:00", "utc": "1985-10-23T08:12:20Z", "ms": 498903140081.44995 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1985-10-22T09:43:43+02:00", "utc": "1985-10-22T07:43:43Z", "ms": 498815023279.2338 }, "end": { "local": "1985-10-22T09:58:47+02:00", "utc": "1985-10-22T07:58:47Z", "ms": 498815927438.1975 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1985-10-21T09:30:19+02:00", "utc": "1985-10-21T07:30:19Z", "ms": 498727818516.7984 }, "end": { "local": "1985-10-22T09:58:47+02:00", "utc": "1985-10-22T07:58:47Z", "ms": 498815927438.1975 } } }, "kaala": "daytime", "days": [ { "local_date": "1985-10-21", "window": { "start": { "local": "1985-10-21T05:28:24+02:00", "utc": "1985-10-21T03:28:24Z", "ms": 498713303970.32416 }, "end": { "local": "1985-10-21T18:18:26+02:00", "utc": "1985-10-21T16:18:26Z", "ms": 498759506250.9007 } }, "covered_min": 0, "window_min": 770, "qualifies": false }, { "local_date": "1985-10-22", "window": { "start": { "local": "1985-10-22T05:27:30+02:00", "utc": "1985-10-22T03:27:30Z", "ms": 498799650381.24677 }, "end": { "local": "1985-10-22T18:19:01+02:00", "utc": "1985-10-22T16:19:01Z", "ms": 498845941138.9331 } }, "covered_min": 15, "window_min": 772, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 09:44 on Tue 22 Oct to 10:12 on Wed 23 Oct, and Śravaṇa from 09:30 on Mon 21 Oct to 09:59 on Tue 22 Oct. They are together from 09:44 on Tue 22 Oct to 09:59 on Tue 22 Oct.", "fact": "1985-10-22T07:43:43Z → 1985-10-22T07:58:47Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 05:28–18:18 on the 21st, 05:28–18:19 on the 22nd.", "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 0 of 770 minutes on the 21st and 15 of 772 on the 22nd.", "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 904 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Soweto, 1985: Tuesday 22 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": "1985-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-22", "confidence": "determinate" } ], "quote": "In Soweto, Vijayā Daśamī (Dussehra) 1985 falls on Tuesday 22 October. Daśamī runs from 09:44 on Tue 22 Oct to 10:12 on Wed 23 Oct and is with Śravaṇa in the day time that day, for 15 minutes.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-10-24", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17142, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-10-23T10:12:20+02:00", "utc": "1985-10-23T08:12:20Z", "ms": 498903140081.44995 }, "end": { "local": "1985-10-24T11:15:38+02:00", "utc": "1985-10-24T09:15:38Z", "ms": 498993338338.36725 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-23T10:12:20+02:00", "utc": "1985-10-23T08:12:20Z", "ms": 498903140081.44995 }, "end": { "local": "1985-10-24T11:15:38+02:00", "utc": "1985-10-24T09:15:38Z", "ms": 498993338338.36725 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-10-23", "window": { "start": { "local": "1985-10-23T05:26:38+02:00", "utc": "1985-10-23T03:26:38Z", "ms": 498885997662.1432 }, "end": { "local": "1985-10-23T05:26:38+02:00", "utc": "1985-10-23T03:26:38Z", "ms": 498885997662.1432 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-10-24", "window": { "start": { "local": "1985-10-24T05:25:46+02:00", "utc": "1985-10-24T03:25:46Z", "ms": 498972345841.67236 }, "end": { "local": "1985-10-24T05:25:46+02:00", "utc": "1985-10-24T03:25:46Z", "ms": 498972345841.67236 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:12 on Wed 23 Oct to 11:16 on Thu 24 Oct.", "fact": "1985-10-23T08:12:20Z → 1985-10-24T09:15:38Z" }, { "step": "kaala", "text": "Sunrise is at 05:27 on the 23rd and 05:26 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 17142 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Soweto, 1985: Thursday 24 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": "1985-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-24", "confidence": "determinate" } ], "quote": "In Soweto, Pāśāṅkuśā Ekādaśī 1985 falls on Thursday 24 October. Ekādaśī runs from 10:12 on Wed 23 Oct to 11:16 on Thu 24 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-10-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-10-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12825, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-10-25T12:49:08+02:00", "utc": "1985-10-25T10:49:08Z", "ms": 499085348418.645 }, "end": { "local": "1985-10-26T14:47:40+02:00", "utc": "1985-10-26T12:47:40Z", "ms": 499178859829.4253 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1985-10-25T12:49:08+02:00", "utc": "1985-10-25T10:49:08Z", "ms": 499085348418.645 }, "end": { "local": "1985-10-26T14:47:40+02:00", "utc": "1985-10-26T12:47:40Z", "ms": 499178859829.4253 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-10-25", "window": { "start": { "local": "1985-10-25T18:20:48+02:00", "utc": "1985-10-25T16:20:48Z", "ms": 499105248474.1099 }, "end": { "local": "1985-10-25T19:49:15+02:00", "utc": "1985-10-25T17:49:15Z", "ms": 499110554679.12177 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "1985-10-26", "window": { "start": { "local": "1985-10-26T18:21:25+02:00", "utc": "1985-10-26T16:21:25Z", "ms": 499191685157.02374 }, "end": { "local": "1985-10-26T19:49:40+02:00", "utc": "1985-10-26T17:49:40Z", "ms": 499196979944.0479 } }, "covered_min": 0, "window_min": 88, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:49 on Fri 25 Oct to 14:48 on Sat 26 Oct.", "fact": "1985-10-25T10:49:08Z → 1985-10-26T12:47:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:49 on the 25th, 18:21–19:50 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 88 of 88 minutes on the 25th and 0 of 88 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 12825 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Friday 25 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": "1985-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-10-25", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Friday 25 October. Trayodaśī runs from 12:49 on Fri 25 Oct to 14:48 on Sat 26 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-10-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23461, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-11-01T03:32:01+02:00", "utc": "1985-11-01T01:32:01Z", "ms": 499656721025.41705 }, "end": { "local": "1985-11-02T05:51:45+02:00", "utc": "1985-11-02T03:51:45Z", "ms": 499751505245.3817 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-01T03:32:01+02:00", "utc": "1985-11-01T01:32:01Z", "ms": 499656721025.41705 }, "end": { "local": "1985-11-02T05:51:45+02:00", "utc": "1985-11-02T03:51:45Z", "ms": 499751505245.3817 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-10-31", "window": { "start": { "local": "1985-10-31T21:01:00+02:00", "utc": "1985-10-31T19:01:00Z", "ms": 499633260302.83514 }, "end": { "local": "1985-10-31T21:01:00+02:00", "utc": "1985-10-31T19:01:00Z", "ms": 499633260302.83514 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-11-01", "window": { "start": { "local": "1985-11-01T21:56:30+02:00", "utc": "1985-11-01T19:56:30Z", "ms": 499722990264.33124 }, "end": { "local": "1985-11-01T21:56:30+02:00", "utc": "1985-11-01T19:56:30Z", "ms": 499722990264.33124 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:32 on Fri 1 Nov to 05:52 on Sat 2 Nov.", "fact": "1985-11-01T01:32:01Z → 1985-11-02T03:51:45Z" }, { "step": "kaala", "text": "Moonrise is at 21:01 on the 31st and 21:57 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23461 s" }, { "step": "ruling", "text": "Karaka Caturthī, Soweto, 1985: Friday 1 November.", "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": "1985-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-01", "confidence": "determinate" } ], "quote": "In Soweto, Karaka Caturthī (Karwa Chauth) 1985 falls on Friday 1 November. Caturthī runs from 03:32 on Fri 1 Nov to 05:52 on Sat 2 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-11-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23461, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-11-01T03:32:01+02:00", "utc": "1985-11-01T01:32:01Z", "ms": 499656721025.41705 }, "end": { "local": "1985-11-02T05:51:45+02:00", "utc": "1985-11-02T03:51:45Z", "ms": 499751505245.3817 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-01T03:32:01+02:00", "utc": "1985-11-01T01:32:01Z", "ms": 499656721025.41705 }, "end": { "local": "1985-11-02T05:51:45+02:00", "utc": "1985-11-02T03:51:45Z", "ms": 499751505245.3817 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-10-31", "window": { "start": { "local": "1985-10-31T21:01:00+02:00", "utc": "1985-10-31T19:01:00Z", "ms": 499633260302.83514 }, "end": { "local": "1985-10-31T21:01:00+02:00", "utc": "1985-10-31T19:01:00Z", "ms": 499633260302.83514 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-11-01", "window": { "start": { "local": "1985-11-01T21:56:30+02:00", "utc": "1985-11-01T19:56:30Z", "ms": 499722990264.33124 }, "end": { "local": "1985-11-01T21:56:30+02:00", "utc": "1985-11-01T19:56:30Z", "ms": 499722990264.33124 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:32 on Fri 1 Nov to 05:52 on Sat 2 Nov.", "fact": "1985-11-01T01:32:01Z → 1985-11-02T03:51:45Z" }, { "step": "kaala", "text": "Moonrise is at 21:01 on the 31st and 21:57 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23461 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Friday 1 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": "1985-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-01", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Friday 1 November. Caturthī runs from 03:32 on Fri 1 Nov to 05:52 on Sat 2 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-11-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31852, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-11-05T09:59:33+02:00", "utc": "1985-11-05T07:59:33Z", "ms": 500025572789.7597 }, "end": { "local": "1985-11-06T10:02:09+02:00", "utc": "1985-11-06T08:02:09Z", "ms": 500112129162.62317 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-05T09:59:33+02:00", "utc": "1985-11-05T07:59:33Z", "ms": 500025572789.7597 }, "end": { "local": "1985-11-06T10:02:09+02:00", "utc": "1985-11-06T08:02:09Z", "ms": 500112129162.62317 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-11-04", "window": { "start": { "local": "1985-11-05T00:28:31+02:00", "utc": "1985-11-04T22:28:31Z", "ms": 499991311248.59503 }, "end": { "local": "1985-11-05T00:28:31+02:00", "utc": "1985-11-04T22:28:31Z", "ms": 499991311248.59503 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-11-05", "window": { "start": { "local": "1985-11-06T01:11:17+02:00", "utc": "1985-11-05T23:11:17Z", "ms": 500080276692.4574 }, "end": { "local": "1985-11-06T01:11:17+02:00", "utc": "1985-11-05T23:11:17Z", "ms": 500080276692.4574 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:00 on Tue 5 Nov to 10:02 on Wed 6 Nov.", "fact": "1985-11-05T07:59:33Z → 1985-11-06T08:02:09Z" }, { "step": "kaala", "text": "Moonrise is at 00:29 on the 4th and 01:11 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 4th and is on the 5th.", "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 31852 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Soweto, 1985: Tuesday 5 November.", "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": "1985-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-05", "confidence": "determinate" } ], "quote": "In Soweto, Ahoyī Aṣṭamī 1985 falls on Tuesday 5 November. Aṣṭamī runs from 10:00 on Tue 5 Nov to 10:02 on Wed 6 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-11-09", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1537, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-11-08T07:50:17+02:00", "utc": "1985-11-08T05:50:17Z", "ms": 500277017025.3981 }, "end": { "local": "1985-11-09T05:39:59+02:00", "utc": "1985-11-09T03:39:59Z", "ms": 500355598741.93115 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-08T07:50:17+02:00", "utc": "1985-11-08T05:50:17Z", "ms": 500277017025.3981 }, "end": { "local": "1985-11-09T05:39:59+02:00", "utc": "1985-11-09T03:39:59Z", "ms": 500355598741.93115 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-11-08", "window": { "start": { "local": "1985-11-08T05:14:56+02:00", "utc": "1985-11-08T03:14:56Z", "ms": 500267695629.77655 }, "end": { "local": "1985-11-08T05:14:56+02:00", "utc": "1985-11-08T03:14:56Z", "ms": 500267695629.77655 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1985-11-09", "window": { "start": { "local": "1985-11-09T05:14:22+02:00", "utc": "1985-11-09T03:14:22Z", "ms": 500354061979.64624 }, "end": { "local": "1985-11-09T05:14:22+02:00", "utc": "1985-11-09T03:14:22Z", "ms": 500354061979.64624 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:50 on Fri 8 Nov to 05:40 on Sat 9 Nov.", "fact": "1985-11-08T05:50:17Z → 1985-11-09T03:39:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 8th and 05:14 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 1537 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Soweto, 1985: Saturday 9 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": "1985-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-09", "confidence": "determinate" } ], "quote": "In Soweto, Ramā Ekādaśī 1985 falls on Saturday 9 November. Ekādaśī runs from 07:50 on Fri 8 Nov to 05:40 on Sat 9 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-11-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25031, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-11-09T05:39:59+02:00", "utc": "1985-11-09T03:39:59Z", "ms": 500355598741.93115 }, "end": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-09T05:39:59+02:00", "utc": "1985-11-09T03:39:59Z", "ms": 500355598741.93115 }, "end": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-08", "window": { "start": { "local": "1985-11-08T18:30:03+02:00", "utc": "1985-11-08T16:30:03Z", "ms": 500315403411.7703 }, "end": { "local": "1985-11-08T19:55:58+02:00", "utc": "1985-11-08T17:55:58Z", "ms": 500320557887.4871 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1985-11-09", "window": { "start": { "local": "1985-11-09T18:30:46+02:00", "utc": "1985-11-09T16:30:46Z", "ms": 500401846266.2911 }, "end": { "local": "1985-11-09T19:56:31+02:00", "utc": "1985-11-09T17:56:31Z", "ms": 500406990721.3602 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:40 on Sat 9 Nov to 02:54 on Sun 10 Nov.", "fact": "1985-11-09T03:39:59Z → 1985-11-10T00:53:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–19:56 on the 8th, 18:31–19:57 on the 9th.", "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 86 minutes on the 8th and 86 of 86 on the 9th.", "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 25031 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Soweto, 1985: Saturday 9 November.", "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": "1985-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-09", "confidence": "determinate" } ], "quote": "In Soweto, Govatsa Dvādaśī (Vasu Baras) 1985 falls on Saturday 9 November. Dvādaśī runs from 05:40 on Sat 9 Nov to 02:54 on Sun 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13315, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 }, "end": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 }, "end": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-09", "window": { "start": { "local": "1985-11-09T18:30:46+02:00", "utc": "1985-11-09T16:30:46Z", "ms": 500401846266.2911 }, "end": { "local": "1985-11-09T19:56:31+02:00", "utc": "1985-11-09T17:56:31Z", "ms": 500406990721.3602 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1985-11-10", "window": { "start": { "local": "1985-11-10T18:31:29+02:00", "utc": "1985-11-10T16:31:29Z", "ms": 500488289484.536 }, "end": { "local": "1985-11-10T19:57:04+02:00", "utc": "1985-11-10T17:57:04Z", "ms": 500493424052.93567 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:54 on Sun 10 Nov to 23:39 on Sun 10 Nov.", "fact": "1985-11-10T00:53:42Z → 1985-11-10T21:39:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:31–19:57 on the 9th, 18:31–19:57 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 86 minutes on the 9th and 86 of 86 on the 10th.", "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 13315 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Soweto, 1985: Sunday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-10", "confidence": "determinate" } ], "quote": "In Soweto, Yama Dīpadāna 1985 falls on Sunday 10 November. Trayodaśī runs from 02:54 on Sun 10 Nov to 23:39 on Sun 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-11-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13315, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 }, "end": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-10T02:53:42+02:00", "utc": "1985-11-10T00:53:42Z", "ms": 500432021860.49243 }, "end": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-09", "window": { "start": { "local": "1985-11-09T18:30:46+02:00", "utc": "1985-11-09T16:30:46Z", "ms": 500401846266.2911 }, "end": { "local": "1985-11-09T19:56:31+02:00", "utc": "1985-11-09T17:56:31Z", "ms": 500406990721.3602 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1985-11-10", "window": { "start": { "local": "1985-11-10T18:31:29+02:00", "utc": "1985-11-10T16:31:29Z", "ms": 500488289484.536 }, "end": { "local": "1985-11-10T19:57:04+02:00", "utc": "1985-11-10T17:57:04Z", "ms": 500493424052.93567 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:54 on Sun 10 Nov to 23:39 on Sun 10 Nov.", "fact": "1985-11-10T00:53:42Z → 1985-11-10T21:39:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:31–19:57 on the 9th, 18:31–19:57 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 86 minutes on the 9th and 86 of 86 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 13315 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Sunday 10 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": "1985-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-10", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Sunday 10 November. Trayodaśī runs from 02:54 on Sun 10 Nov to 23:39 on Sun 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-11-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 635, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "end": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "end": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 } }, "kaala": "nishita", "days": [ { "local_date": "1985-11-10", "window": { "start": { "local": "1985-11-10T23:28:24+02:00", "utc": "1985-11-10T21:28:24Z", "ms": 500506104116.0348 }, "end": { "local": "1985-11-11T00:16:24+02:00", "utc": "1985-11-10T22:16:24Z", "ms": 500508984116.0348 } }, "covered_min": 37, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-11", "window": { "start": { "local": "1985-11-11T23:28:31+02:00", "utc": "1985-11-11T21:28:31Z", "ms": 500592511122.9821 }, "end": { "local": "1985-11-12T00:16:31+02:00", "utc": "1985-11-11T22:16:31Z", "ms": 500595391122.9821 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:39 on Sun 10 Nov to 20:05 on Mon 11 Nov.", "fact": "1985-11-10T21:39:00Z → 1985-11-11T18:04:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:28–00:16 on the 10th, 23:29–00:17 on the 11th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 37 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 635 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Sunday 10 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": "1985-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-10", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Sunday 10 November. Caturdaśī runs from 23:39 on Sun 10 Nov to 20:05 on Mon 11 Nov and covers 37 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14925, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "end": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-10T23:39:00+02:00", "utc": "1985-11-10T21:39:00Z", "ms": 500506739543.8673 }, "end": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 } }, "kaala": "arunodaya", "days": [ { "local_date": "1985-11-11", "window": { "start": { "local": "1985-11-11T03:47:44+02:00", "utc": "1985-11-11T01:47:44Z", "ms": 500521664179.1339 }, "end": { "local": "1985-11-11T05:13:19+02:00", "utc": "1985-11-11T03:13:19Z", "ms": 500526798747.53357 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T03:47:24+02:00", "utc": "1985-11-12T01:47:24Z", "ms": 500608044380.25726 }, "end": { "local": "1985-11-12T05:12:49+02:00", "utc": "1985-11-12T03:12:49Z", "ms": 500613169201.0846 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:39 on Sun 10 Nov to 20:05 on Mon 11 Nov.", "fact": "1985-11-10T21:39:00Z → 1985-11-11T18:04:40Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 03:48–05:13 on the 11th, 03:47–05:13 on the 12th.", "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 86 of 86 minutes on the 11th and 0 of 85 on the 12th.", "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 14925 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Soweto, 1985: Monday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-11", "confidence": "determinate" } ], "quote": "In Soweto, Naraka Caturdaśī (Choti Diwali) 1985 falls on Monday 11 November. Caturdaśī runs from 23:39 on Sun 10 Nov to 20:05 on Mon 11 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-11", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 422, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "end": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "end": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-11", "window": { "start": { "local": "1985-11-11T18:32:13+02:00", "utc": "1985-11-11T16:32:13Z", "ms": 500574733044.87964 }, "end": { "local": "1985-11-11T19:57:38+02:00", "utc": "1985-11-11T17:57:38Z", "ms": 500579857865.707 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T18:32:57+02:00", "utc": "1985-11-12T16:32:57Z", "ms": 500661176923.18976 }, "end": { "local": "1985-11-12T19:58:12+02:00", "utc": "1985-11-12T17:58:12Z", "ms": 500666292140.7634 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 20:05 on Mon 11 Nov to 16:20 on Tue 12 Nov.", "fact": "1985-11-11T18:04:40Z → 1985-11-12T14:20:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–19:58 on the 11th, 18:33–19:58 on the 12th.", "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 85 minutes on the 11th and 0 of 85 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 422 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Soweto, 1985: Monday 11 November.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "1985-11-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-11", "confidence": "determinate" } ], "quote": "In Soweto, Lakṣmī Pūjā (Diwali) 1985 falls on Monday 11 November. Amāvasyā runs from 20:05 on Mon 11 Nov to 16:20 on Tue 12 Nov, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12231, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "end": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-11T20:04:40+02:00", "utc": "1985-11-11T18:04:40Z", "ms": 500580279997.0205 }, "end": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 } }, "kaala": "nishita", "days": [ { "local_date": "1985-11-11", "window": { "start": { "local": "1985-11-11T23:28:31+02:00", "utc": "1985-11-11T21:28:31Z", "ms": 500592511122.9821 }, "end": { "local": "1985-11-12T00:16:31+02:00", "utc": "1985-11-11T22:16:31Z", "ms": 500595391122.9821 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T23:28:39+02:00", "utc": "1985-11-12T21:28:39Z", "ms": 500678918989.09094 }, "end": { "local": "1985-11-13T00:16:39+02:00", "utc": "1985-11-12T22:16:39Z", "ms": 500681798989.09094 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 20:05 on Mon 11 Nov to 16:20 on Tue 12 Nov.", "fact": "1985-11-11T18:04:40Z → 1985-11-12T14:20:20Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:29–00:17 on the 11th, 23:29–00:17 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12231 s" }, { "step": "ruling", "text": "Kālī Pūjā, Soweto, 1985: Monday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-11", "confidence": "determinate" } ], "quote": "In Soweto, Kālī Pūjā 1985 falls on Monday 11 November. Amāvasyā runs from 20:05 on Mon 11 Nov to 16:20 on Tue 12 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7957, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T18:32:57+02:00", "utc": "1985-11-12T16:32:57Z", "ms": 500661176923.18976 }, "end": { "local": "1985-11-12T19:58:12+02:00", "utc": "1985-11-12T17:58:12Z", "ms": 500666292140.7634 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "1985-11-13", "window": { "start": { "local": "1985-11-13T18:33:41+02:00", "utc": "1985-11-13T16:33:41Z", "ms": 500747621093.1492 }, "end": { "local": "1985-11-13T19:58:47+02:00", "utc": "1985-11-13T17:58:47Z", "ms": 500752726857.14575 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov.", "fact": "1985-11-12T14:20:20Z → 1985-11-13T10:36:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:33–19:58 on the 12th, 18:34–19:59 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 85 of 85 minutes on the 12th and 0 of 85 on the 13th.", "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 7957 s" }, { "step": "ruling", "text": "Bali Pūjā, Soweto, 1985: Tuesday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-12", "confidence": "determinate" } ], "quote": "In Soweto, Bali Pūjā 1985 falls on Tuesday 12 November. Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1143, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T11:28:53+02:00", "utc": "1985-11-12T09:28:53Z", "ms": 500635733062.1372 }, "end": { "local": "1985-11-12T12:16:53+02:00", "utc": "1985-11-12T10:16:53Z", "ms": 500638613062.1372 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-11-13", "window": { "start": { "local": "1985-11-13T11:29:01+02:00", "utc": "1985-11-13T09:29:01Z", "ms": 500722141074.0707 }, "end": { "local": "1985-11-13T12:17:01+02:00", "utc": "1985-11-13T10:17:01Z", "ms": 500725021074.0707 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov.", "fact": "1985-11-12T14:20:20Z → 1985-11-13T10:36:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 12th, 11:29–12:17 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1143 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Soweto, 1985: Wednesday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-13", "confidence": "determinate" } ], "quote": "In Soweto, Govardhana Pūjā 1985 falls on Wednesday 13 November. Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10596, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-12T16:20:20+02:00", "utc": "1985-11-12T14:20:20Z", "ms": 500653220060.0848 }, "end": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 } }, "kaala": "purvahna", "days": [ { "local_date": "1985-11-12", "window": { "start": { "local": "1985-11-12T05:12:49+02:00", "utc": "1985-11-12T03:12:49Z", "ms": 500613169201.0846 }, "end": { "local": "1985-11-12T09:39:32+02:00", "utc": "1985-11-12T07:39:32Z", "ms": 500629171775.1196 } }, "covered_min": 0, "window_min": 267, "qualifies": false }, { "local_date": "1985-11-13", "window": { "start": { "local": "1985-11-13T05:12:21+02:00", "utc": "1985-11-13T03:12:21Z", "ms": 500699541054.9922 }, "end": { "local": "1985-11-13T09:39:28+02:00", "utc": "1985-11-13T07:39:28Z", "ms": 500715567734.37787 } }, "covered_min": 267, "window_min": 267, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov.", "fact": "1985-11-12T14:20:20Z → 1985-11-13T10:36:04Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:13–09:40 on the 12th, 05:12–09:39 on the 13th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 267 minutes on the 12th and 267 of 267 on the 13th.", "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 10596 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Soweto, 1985: Wednesday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-13", "confidence": "determinate" } ], "quote": "In Soweto, Dyūta Pratipad 1985 falls on Wednesday 13 November. Pratipadā runs from 16:20 on Tue 12 Nov to 12:36 on Wed 13 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1143, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 }, "end": { "local": "1985-11-14T09:02:03+02:00", "utc": "1985-11-14T07:02:03Z", "ms": 500799722579.847 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-13T12:36:04+02:00", "utc": "1985-11-13T10:36:04Z", "ms": 500726163626.70355 }, "end": { "local": "1985-11-14T09:02:03+02:00", "utc": "1985-11-14T07:02:03Z", "ms": 500799722579.847 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-13", "window": { "start": { "local": "1985-11-13T11:29:01+02:00", "utc": "1985-11-13T09:29:01Z", "ms": 500722141074.0707 }, "end": { "local": "1985-11-13T12:17:01+02:00", "utc": "1985-11-13T10:17:01Z", "ms": 500725021074.0707 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-11-14", "window": { "start": { "local": "1985-11-14T11:29:10+02:00", "utc": "1985-11-14T09:29:10Z", "ms": 500808549924.9874 }, "end": { "local": "1985-11-14T12:17:10+02:00", "utc": "1985-11-14T10:17:10Z", "ms": 500811429924.9874 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 12:36 on Wed 13 Nov to 09:02 on Thu 14 Nov.", "fact": "1985-11-13T10:36:04Z → 1985-11-14T07:02:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 13th, 11:29–12:17 on the 14th.", "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 13th and 0 of 48 on the 14th.", "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: purvaviddha → second-day · margin 1143 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Soweto, 1985: Thursday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-13", "confidence": "determinate" } ], "quote": "In Soweto, Yama Dvitīyā (Bhai Dooj) 1985 falls on Thursday 14 November. Dvitīyā runs from 12:36 on Wed 13 Nov to 09:02 on Thu 14 Nov, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20463, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-11-15T05:48:17+02:00", "utc": "1985-11-15T03:48:17Z", "ms": 500874496742.14905 }, "end": { "local": "1985-11-16T03:04:09+02:00", "utc": "1985-11-16T01:04:09Z", "ms": 500951049126.33417 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-15T05:48:17+02:00", "utc": "1985-11-15T03:48:17Z", "ms": 500874496742.14905 }, "end": { "local": "1985-11-16T03:04:09+02:00", "utc": "1985-11-16T01:04:09Z", "ms": 500951049126.33417 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-15", "window": { "start": { "local": "1985-11-15T11:29:20+02:00", "utc": "1985-11-15T09:29:20Z", "ms": 500894959607.2075 }, "end": { "local": "1985-11-15T12:17:20+02:00", "utc": "1985-11-15T10:17:20Z", "ms": 500897839607.2075 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-16", "window": { "start": { "local": "1985-11-16T11:29:30+02:00", "utc": "1985-11-16T09:29:30Z", "ms": 500981370113.00323 }, "end": { "local": "1985-11-16T12:17:30+02:00", "utc": "1985-11-16T10:17:30Z", "ms": 500984250113.00323 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:48 on Fri 15 Nov to 03:04 on Sat 16 Nov.", "fact": "1985-11-15T03:48:17Z → 1985-11-16T01:04:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 15th, 11:30–12:18 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20463 s" }, { "step": "ruling", "text": "Nāga Caturthī, Soweto, 1985: Friday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-15", "confidence": "determinate" } ], "quote": "In Soweto, Nāga Caturthī 1985 falls on Friday 15 November. Caturthī runs from 05:48 on Fri 15 Nov to 03:04 on Sat 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-11-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20463, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-11-15T05:48:17+02:00", "utc": "1985-11-15T03:48:17Z", "ms": 500874496742.14905 }, "end": { "local": "1985-11-16T03:04:09+02:00", "utc": "1985-11-16T01:04:09Z", "ms": 500951049126.33417 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-15T05:48:17+02:00", "utc": "1985-11-15T03:48:17Z", "ms": 500874496742.14905 }, "end": { "local": "1985-11-16T03:04:09+02:00", "utc": "1985-11-16T01:04:09Z", "ms": 500951049126.33417 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-15", "window": { "start": { "local": "1985-11-15T11:29:20+02:00", "utc": "1985-11-15T09:29:20Z", "ms": 500894959607.2075 }, "end": { "local": "1985-11-15T12:17:20+02:00", "utc": "1985-11-15T10:17:20Z", "ms": 500897839607.2075 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-16", "window": { "start": { "local": "1985-11-16T11:29:30+02:00", "utc": "1985-11-16T09:29:30Z", "ms": 500981370113.00323 }, "end": { "local": "1985-11-16T12:17:30+02:00", "utc": "1985-11-16T10:17:30Z", "ms": 500984250113.00323 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:48 on Fri 15 Nov to 03:04 on Sat 16 Nov.", "fact": "1985-11-15T03:48:17Z → 1985-11-16T01:04:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 15th, 11:30–12:18 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20463 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Friday 15 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": "1985-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-15", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Friday 15 November. Caturthī runs from 05:48 on Fri 15 Nov to 03:04 on Sat 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-11-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37908, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-11-17T00:57:54+02:00", "utc": "1985-11-16T22:57:54Z", "ms": 501029873657.69476 }, "end": { "local": "1985-11-17T23:35:55+02:00", "utc": "1985-11-17T21:35:55Z", "ms": 501111354930.858 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-17T00:57:54+02:00", "utc": "1985-11-16T22:57:54Z", "ms": 501029873657.69476 }, "end": { "local": "1985-11-17T23:35:55+02:00", "utc": "1985-11-17T21:35:55Z", "ms": 501111354930.858 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-17", "window": { "start": { "local": "1985-11-17T11:29:41+02:00", "utc": "1985-11-17T09:29:41Z", "ms": 501067781434.9303 }, "end": { "local": "1985-11-17T12:17:41+02:00", "utc": "1985-11-17T10:17:41Z", "ms": 501070661434.9303 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-18", "window": { "start": { "local": "1985-11-18T11:29:54+02:00", "utc": "1985-11-18T09:29:54Z", "ms": 501154193565.85095 }, "end": { "local": "1985-11-18T12:17:54+02:00", "utc": "1985-11-18T10:17:54Z", "ms": 501157073565.85095 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:58 on Sun 17 Nov to 23:36 on Sun 17 Nov.", "fact": "1985-11-16T22:57:54Z → 1985-11-17T21:35:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 17th, 11:30–12:18 on the 18th.", "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 17th and 0 of 48 on the 18th.", "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 37908 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Soweto, 1985: Sunday 17 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-17", "confidence": "determinate" } ], "quote": "In Soweto, Sūrya Ṣaṣṭhī (Chhath) 1985 falls on Sunday 17 November. Ṣaṣṭhī runs from 00:58 on Sun 17 Nov to 23:36 on Sun 17 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38650, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1985-11-18T23:02:04+02:00", "utc": "1985-11-18T21:02:04Z", "ms": 501195723794.077 }, "end": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-18T23:02:04+02:00", "utc": "1985-11-18T21:02:04Z", "ms": 501195723794.077 }, "end": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-18", "window": { "start": { "local": "1985-11-18T11:29:54+02:00", "utc": "1985-11-18T09:29:54Z", "ms": 501154193565.85095 }, "end": { "local": "1985-11-18T12:17:54+02:00", "utc": "1985-11-18T10:17:54Z", "ms": 501157073565.85095 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-11-19", "window": { "start": { "local": "1985-11-19T11:30:06+02:00", "utc": "1985-11-19T09:30:06Z", "ms": 501240606498.74097 }, "end": { "local": "1985-11-19T12:18:06+02:00", "utc": "1985-11-19T10:18:06Z", "ms": 501243486498.74097 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:02 on Mon 18 Nov to 23:17 on Tue 19 Nov.", "fact": "1985-11-18T21:02:04Z → 1985-11-19T21:16:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 18th, 11:30–12:18 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38650 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Soweto, 1985: Tuesday 19 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-19", "confidence": "determinate" } ], "quote": "In Soweto, Gopāṣṭamī 1985 falls on Tuesday 19 November. Aṣṭamī runs from 23:02 on Mon 18 Nov to 23:17 on Tue 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17506, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 }, "end": { "local": "1985-11-21T00:17:42+02:00", "utc": "1985-11-20T22:17:42Z", "ms": 501373062084.8144 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 }, "end": { "local": "1985-11-21T00:17:42+02:00", "utc": "1985-11-20T22:17:42Z", "ms": 501373062084.8144 } }, "kaala": "purvahna", "days": [ { "local_date": "1985-11-20", "window": { "start": { "local": "1985-11-20T05:09:44+02:00", "utc": "1985-11-20T03:09:44Z", "ms": 501304184388.7652 }, "end": { "local": "1985-11-20T09:39:28+02:00", "utc": "1985-11-20T07:39:28Z", "ms": 501320368280.54016 } }, "covered_min": 270, "window_min": 270, "qualifies": true }, { "local_date": "1985-11-21", "window": { "start": { "local": "1985-11-21T05:09:28+02:00", "utc": "1985-11-21T03:09:28Z", "ms": 501390567936.26483 }, "end": { "local": "1985-11-21T09:39:32+02:00", "utc": "1985-11-21T07:39:32Z", "ms": 501406772472.9914 } }, "covered_min": 0, "window_min": 270, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 23:17 on Tue 19 Nov to 00:18 on Thu 21 Nov.", "fact": "1985-11-19T21:16:58Z → 1985-11-20T22:17:42Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:10–09:39 on the 20th, 05:09–09:40 on the 21st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 270 of 270 minutes on the 20th and 0 of 270 on the 21st.", "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 17506 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Soweto, 1985: Wednesday 20 November.", "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": "1985-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-20", "confidence": "determinate" } ], "quote": "In Soweto, Akṣaya Navamī (Amla Navami) 1985 falls on Wednesday 20 November. Navamī runs from 23:17 on Tue 19 Nov to 00:18 on Thu 21 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39532, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 }, "end": { "local": "1985-11-21T00:17:42+02:00", "utc": "1985-11-20T22:17:42Z", "ms": 501373062084.8144 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-19T23:16:58+02:00", "utc": "1985-11-19T21:16:58Z", "ms": 501283018064.18274 }, "end": { "local": "1985-11-21T00:17:42+02:00", "utc": "1985-11-20T22:17:42Z", "ms": 501373062084.8144 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-19", "window": { "start": { "local": "1985-11-19T11:30:06+02:00", "utc": "1985-11-19T09:30:06Z", "ms": 501240606498.74097 }, "end": { "local": "1985-11-19T12:18:06+02:00", "utc": "1985-11-19T10:18:06Z", "ms": 501243486498.74097 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-11-20", "window": { "start": { "local": "1985-11-20T11:30:20+02:00", "utc": "1985-11-20T09:30:20Z", "ms": 501327020226.4276 }, "end": { "local": "1985-11-20T12:18:20+02:00", "utc": "1985-11-20T10:18:20Z", "ms": 501329900226.4276 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 23:17 on Tue 19 Nov to 00:18 on Thu 21 Nov.", "fact": "1985-11-19T21:16:58Z → 1985-11-20T22:17:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 19th, 11:30–12:18 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 39532 s" }, { "step": "ruling", "text": "Durgā Navamī, Soweto, 1985: Wednesday 20 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-20", "confidence": "determinate" } ], "quote": "In Soweto, Durgā Navamī 1985 falls on Wednesday 20 November. Navamī runs from 23:17 on Tue 19 Nov to 00:18 on Thu 21 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-11-22", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3605, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-11-22T01:57:58+02:00", "utc": "1985-11-21T23:57:58Z", "ms": 501465478192.9976 }, "end": { "local": "1985-11-23T04:08:55+02:00", "utc": "1985-11-23T02:08:55Z", "ms": 501559734635.2582 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-22T01:57:58+02:00", "utc": "1985-11-21T23:57:58Z", "ms": 501465478192.9976 }, "end": { "local": "1985-11-23T04:08:55+02:00", "utc": "1985-11-23T02:08:55Z", "ms": 501559734635.2582 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-11-22", "window": { "start": { "local": "1985-11-22T05:09:13+02:00", "utc": "1985-11-22T03:09:13Z", "ms": 501476953004.8309 }, "end": { "local": "1985-11-22T05:09:13+02:00", "utc": "1985-11-22T03:09:13Z", "ms": 501476953004.8309 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-11-23", "window": { "start": { "local": "1985-11-23T05:09:00+02:00", "utc": "1985-11-23T03:09:00Z", "ms": 501563339605.8412 }, "end": { "local": "1985-11-23T05:09:00+02:00", "utc": "1985-11-23T03:09:00Z", "ms": 501563339605.8412 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:58 on Fri 22 Nov to 04:09 on Sat 23 Nov.", "fact": "1985-11-21T23:57:58Z → 1985-11-23T02:08:55Z" }, { "step": "kaala", "text": "Sunrise is at 05:09 on the 22nd and 05:09 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3605 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Soweto, 1985: Friday 22 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": "1985-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-22", "confidence": "determinate" } ], "quote": "In Soweto, Prabodhinī Ekādaśī 1985 falls on Friday 22 November. Ekādaśī runs from 01:58 on Fri 22 Nov to 04:09 on Sat 23 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-11-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-11-24", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33638, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-11-24T06:40:20+02:00", "utc": "1985-11-24T04:40:20Z", "ms": 501655220365.3555 }, "end": { "local": "1985-11-25T09:22:05+02:00", "utc": "1985-11-25T07:22:05Z", "ms": 501751325380.4457 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-24T06:40:20+02:00", "utc": "1985-11-24T04:40:20Z", "ms": 501655220365.3555 }, "end": { "local": "1985-11-25T09:22:05+02:00", "utc": "1985-11-25T07:22:05Z", "ms": 501751325380.4457 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-11-24", "window": { "start": { "local": "1985-11-24T18:41:58+02:00", "utc": "1985-11-24T16:41:58Z", "ms": 501698518100.2604 }, "end": { "local": "1985-11-24T20:05:31+02:00", "utc": "1985-11-24T18:05:31Z", "ms": 501703531346.36334 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "1985-11-25", "window": { "start": { "local": "1985-11-25T18:42:44+02:00", "utc": "1985-11-25T16:42:44Z", "ms": 501784963555.18 }, "end": { "local": "1985-11-25T20:06:10+02:00", "utc": "1985-11-25T18:06:10Z", "ms": 501789969574.90375 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:40 on Sun 24 Nov to 09:22 on Mon 25 Nov.", "fact": "1985-11-24T04:40:20Z → 1985-11-25T07:22:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:42–20:06 on the 24th, 18:43–20:06 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 84 of 84 minutes on the 24th and 0 of 83 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33638 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Sunday 24 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": "1985-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-24", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Sunday 24 November. Trayodaśī runs from 06:40 on Sun 24 Nov to 09:22 on Mon 25 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-11-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31831, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-11-26T12:05:04+02:00", "utc": "1985-11-26T10:05:04Z", "ms": 501847503570.1888 }, "end": { "local": "1985-11-27T14:41:44+02:00", "utc": "1985-11-27T12:41:44Z", "ms": 501943304140.442 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-26T12:05:04+02:00", "utc": "1985-11-26T10:05:04Z", "ms": 501847503570.1888 }, "end": { "local": "1985-11-27T14:41:44+02:00", "utc": "1985-11-27T12:41:44Z", "ms": 501943304140.442 } }, "kaala": "nishita", "days": [ { "local_date": "1985-11-26", "window": { "start": { "local": "1985-11-26T23:31:55+02:00", "utc": "1985-11-26T21:31:55Z", "ms": 501888715227.94806 }, "end": { "local": "1985-11-27T00:19:55+02:00", "utc": "1985-11-26T22:19:55Z", "ms": 501891595227.94806 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-27", "window": { "start": { "local": "1985-11-27T23:32:15+02:00", "utc": "1985-11-27T21:32:15Z", "ms": 501975135056.7894 }, "end": { "local": "1985-11-28T00:20:15+02:00", "utc": "1985-11-27T22:20:15Z", "ms": 501978015056.7894 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:05 on Tue 26 Nov to 14:42 on Wed 27 Nov.", "fact": "1985-11-26T10:05:04Z → 1985-11-27T12:41:44Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:32–00:20 on the 26th, 23:32–00:20 on the 27th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. 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 night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31831 s" }, { "step": "ruling", "text": "Rāsayātrā, Soweto, 1985: Tuesday 26 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": "1985-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-26", "confidence": "determinate" } ], "quote": "In Soweto, Rāsayātrā 1985 falls on Tuesday 26 November. Pūrṇimā runs from 12:05 on Tue 26 Nov to 14:42 on Wed 27 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-27", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 895, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-11-26T12:05:04+02:00", "utc": "1985-11-26T10:05:04Z", "ms": 501847503570.1888 }, "end": { "local": "1985-11-27T14:41:44+02:00", "utc": "1985-11-27T12:41:44Z", "ms": 501943304140.442 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1985-11-26T12:05:04+02:00", "utc": "1985-11-26T10:05:04Z", "ms": 501847503570.1888 }, "end": { "local": "1985-11-27T14:41:44+02:00", "utc": "1985-11-27T12:41:44Z", "ms": 501943304140.442 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-11-26", "window": { "start": { "local": "1985-11-26T11:31:59+02:00", "utc": "1985-11-26T09:31:59Z", "ms": 501845518815.3377 }, "end": { "local": "1985-11-26T12:19:59+02:00", "utc": "1985-11-26T10:19:59Z", "ms": 501848398815.3377 } }, "covered_min": 15, "window_min": 48, "qualifies": true }, { "local_date": "1985-11-27", "window": { "start": { "local": "1985-11-27T11:32:18+02:00", "utc": "1985-11-27T09:32:18Z", "ms": 501931937856.99585 }, "end": { "local": "1985-11-27T12:20:18+02:00", "utc": "1985-11-27T10:20:18Z", "ms": 501934817856.99585 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:05 on Tue 26 Nov to 14:42 on Wed 27 Nov.", "fact": "1985-11-26T10:05:04Z → 1985-11-27T12:41:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 26th, 11:32–12:20 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 15 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": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 895 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Soweto, 1985: Wednesday 27 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1985-11-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-27", "confidence": "boundary" } ], "quote": "In Soweto, Kārtikī Pūrṇimā 1985 falls on Wednesday 27 November. Pūrṇimā runs from 12:05 on Tue 26 Nov to 14:42 on Wed 27 Nov and covers all of madhyāhna that midday. It also reaches the previous midday for 15 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/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-11-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-11-30", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 264, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-11-30T21:00:09+02:00", "utc": "1985-11-30T19:00:09Z", "ms": 502225208670.38995 }, "end": { "local": "1985-12-01T22:21:49+02:00", "utc": "1985-12-01T20:21:49Z", "ms": 502316508777.08203 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-11-30T21:00:09+02:00", "utc": "1985-11-30T19:00:09Z", "ms": 502225208670.38995 }, "end": { "local": "1985-12-01T22:21:49+02:00", "utc": "1985-12-01T20:21:49Z", "ms": 502316508777.08203 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-11-30", "window": { "start": { "local": "1985-11-30T21:38:09+02:00", "utc": "1985-11-30T19:38:09Z", "ms": 502227488883.6374 }, "end": { "local": "1985-11-30T21:38:09+02:00", "utc": "1985-11-30T19:38:09Z", "ms": 502227488883.6374 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-12-01", "window": { "start": { "local": "1985-12-01T22:26:13+02:00", "utc": "1985-12-01T20:26:13Z", "ms": 502316772850.04456 }, "end": { "local": "1985-12-01T22:26:13+02:00", "utc": "1985-12-01T20:26:13Z", "ms": 502316772850.04456 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:00 on Sat 30 Nov to 22:22 on Sun 1 Dec.", "fact": "1985-11-30T19:00:09Z → 1985-12-01T20:21:49Z" }, { "step": "kaala", "text": "Moonrise is at 21:38 on the 30th and 22:26 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 30th and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 264 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Saturday 30 November.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-11-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-11-30", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Saturday 30 November. Caturthī runs from 21:00 on Sat 30 Nov to 22:22 on Sun 1 Dec and is current at moonrise that day. It is 4 min 24 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-11-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/ekadashi?on=1985-12-08", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36578, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-12-07T18:59:09+02:00", "utc": "1985-12-07T16:59:09Z", "ms": 502822749276.04584 }, "end": { "local": "1985-12-08T16:23:20+02:00", "utc": "1985-12-08T14:23:20Z", "ms": 502899800183.7538 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-07T18:59:09+02:00", "utc": "1985-12-07T16:59:09Z", "ms": 502822749276.04584 }, "end": { "local": "1985-12-08T16:23:20+02:00", "utc": "1985-12-08T14:23:20Z", "ms": 502899800183.7538 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-12-08", "window": { "start": { "local": "1985-12-08T05:08:47+02:00", "utc": "1985-12-08T03:08:47Z", "ms": 502859326929.06213 }, "end": { "local": "1985-12-08T05:08:47+02:00", "utc": "1985-12-08T03:08:47Z", "ms": 502859326929.06213 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-12-09", "window": { "start": { "local": "1985-12-09T05:08:59+02:00", "utc": "1985-12-09T03:08:59Z", "ms": 502945738651.321 }, "end": { "local": "1985-12-09T05:08:59+02:00", "utc": "1985-12-09T03:08:59Z", "ms": 502945738651.321 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:59 on Sat 7 Dec to 16:23 on Sun 8 Dec.", "fact": "1985-12-07T16:59:09Z → 1985-12-08T14:23:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:09 on the 8th and 05:09 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is not on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36578 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Soweto, 1985: Sunday 8 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": "1985-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-08", "confidence": "determinate" } ], "quote": "In Soweto, Utpannā Ekādaśī 1985 falls on Sunday 8 December. Ekādaśī runs from 18:59 on Sat 7 Dec to 16:23 on Sun 8 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-12-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/pradosha-vrata?on=1985-12-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19912, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-12-09T13:21:03+02:00", "utc": "1985-12-09T11:21:03Z", "ms": 502975263362.2394 }, "end": { "local": "1985-12-10T09:59:33+02:00", "utc": "1985-12-10T07:59:33Z", "ms": 503049573386.6025 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-09T13:21:03+02:00", "utc": "1985-12-09T11:21:03Z", "ms": 502975263362.2394 }, "end": { "local": "1985-12-10T09:59:33+02:00", "utc": "1985-12-10T07:59:33Z", "ms": 503049573386.6025 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-12-09", "window": { "start": { "local": "1985-12-09T18:52:56+02:00", "utc": "1985-12-09T16:52:56Z", "ms": 502995175530.4574 }, "end": { "local": "1985-12-09T20:15:06+02:00", "utc": "1985-12-09T18:15:06Z", "ms": 503000105712.6904 } }, "covered_min": 82, "window_min": 82, "qualifies": true }, { "local_date": "1985-12-10", "window": { "start": { "local": "1985-12-10T18:53:36+02:00", "utc": "1985-12-10T16:53:36Z", "ms": 503081615971.62787 }, "end": { "local": "1985-12-10T20:15:43+02:00", "utc": "1985-12-10T18:15:43Z", "ms": 503086542728.20605 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:21 on Mon 9 Dec to 10:00 on Tue 10 Dec.", "fact": "1985-12-09T11:21:03Z → 1985-12-10T07:59:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:15 on the 9th, 18:54–20:16 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 82 of 82 minutes on the 9th and 0 of 82 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 19912 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Soweto, 1985: Monday 9 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": "1985-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-09", "confidence": "determinate" } ], "quote": "In Soweto, Kṛṣṇa Pradoṣa Vrata 1985 falls on Monday 9 December. Trayodaśī runs from 13:21 on Mon 9 Dec to 10:00 on Tue 10 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-12-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/shivaratri?on=1985-12-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21716, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1985-12-10T09:59:33+02:00", "utc": "1985-12-10T07:59:33Z", "ms": 503049573386.6025 }, "end": { "local": "1985-12-11T06:27:28+02:00", "utc": "1985-12-11T04:27:28Z", "ms": 503123247608.54395 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-10T09:59:33+02:00", "utc": "1985-12-10T07:59:33Z", "ms": 503049573386.6025 }, "end": { "local": "1985-12-11T06:27:28+02:00", "utc": "1985-12-11T04:27:28Z", "ms": 503123247608.54395 } }, "kaala": "nishita", "days": [ { "local_date": "1985-12-09", "window": { "start": { "local": "1985-12-09T23:37:04+02:00", "utc": "1985-12-09T21:37:04Z", "ms": 503012223713.8313 }, "end": { "local": "1985-12-10T00:25:04+02:00", "utc": "1985-12-09T22:25:04Z", "ms": 503015103713.8313 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-10", "window": { "start": { "local": "1985-12-10T23:37:31+02:00", "utc": "1985-12-10T21:37:31Z", "ms": 503098651308.79614 }, "end": { "local": "1985-12-11T00:25:31+02:00", "utc": "1985-12-10T22:25:31Z", "ms": 503101531308.79614 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:00 on Tue 10 Dec to 06:27 on Wed 11 Dec.", "fact": "1985-12-10T07:59:33Z → 1985-12-11T04:27:28Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:37–00:25 on the 9th, 23:38–00:26 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21716 s" }, { "step": "ruling", "text": "Śivarātri, Soweto, 1985: Tuesday 10 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": "1985-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-10", "confidence": "determinate" } ], "quote": "In Soweto, Śivarātri 1985 falls on Tuesday 10 December. Caturdaśī runs from 10:00 on Tue 10 Dec to 06:27 on Wed 11 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/soweto/festivals/1985/shivaratri?on=1985-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/vinayaka-chaturthi?on=1985-12-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12786, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-12-14T17:54:07+02:00", "utc": "1985-12-14T15:54:07Z", "ms": 503423646723.5353 }, "end": { "local": "1985-12-15T16:00:49+02:00", "utc": "1985-12-15T14:00:49Z", "ms": 503503249284.571 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-14T17:54:07+02:00", "utc": "1985-12-14T15:54:07Z", "ms": 503423646723.5353 }, "end": { "local": "1985-12-15T16:00:49+02:00", "utc": "1985-12-15T14:00:49Z", "ms": 503503249284.571 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-14", "window": { "start": { "local": "1985-12-14T11:39:15+02:00", "utc": "1985-12-14T09:39:15Z", "ms": 503401155123.042 }, "end": { "local": "1985-12-14T12:27:15+02:00", "utc": "1985-12-14T10:27:15Z", "ms": 503404035123.042 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-15", "window": { "start": { "local": "1985-12-15T11:39:44+02:00", "utc": "1985-12-15T09:39:44Z", "ms": 503487583689.55005 }, "end": { "local": "1985-12-15T12:27:44+02:00", "utc": "1985-12-15T10:27:44Z", "ms": 503490463689.55005 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:54 on Sat 14 Dec to 16:01 on Sun 15 Dec.", "fact": "1985-12-14T15:54:07Z → 1985-12-15T14:00:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 14th, 11:40–12:28 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12786 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Soweto, 1985: Sunday 15 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": "1985-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-15", "confidence": "determinate" } ], "quote": "In Soweto, Vināyaka Caturthī 1985 falls on Sunday 15 December. Caturthī runs from 17:54 on Sat 14 Dec to 16:01 on Sun 15 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/vinayaka-chaturthi?on=1985-12-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8805, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1985-12-15T16:00:49+02:00", "utc": "1985-12-15T14:00:49Z", "ms": 503503249284.571 }, "end": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-15T16:00:49+02:00", "utc": "1985-12-15T14:00:49Z", "ms": 503503249284.571 }, "end": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-15", "window": { "start": { "local": "1985-12-15T11:39:44+02:00", "utc": "1985-12-15T09:39:44Z", "ms": 503487583689.55005 }, "end": { "local": "1985-12-15T12:27:44+02:00", "utc": "1985-12-15T10:27:44Z", "ms": 503490463689.55005 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-16", "window": { "start": { "local": "1985-12-16T11:40:12+02:00", "utc": "1985-12-16T09:40:12Z", "ms": 503574012490.9437 }, "end": { "local": "1985-12-16T12:28:12+02:00", "utc": "1985-12-16T10:28:12Z", "ms": 503576892490.9437 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 16:01 on Sun 15 Dec to 14:55 on Mon 16 Dec.", "fact": "1985-12-15T14:00:49Z → 1985-12-16T12:54:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 15th, 11:40–12:28 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8805 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Soweto, 1985: Monday 16 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-12-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-16", "confidence": "determinate" } ], "quote": "In Soweto, Nāga Pañcamī (Mārgaśīrṣa) 1985 falls on Monday 16 December. Pañcamī runs from 16:01 on Sun 15 Dec to 14:55 on Mon 16 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7945, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 }, "end": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 }, "end": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-16", "window": { "start": { "local": "1985-12-16T11:40:12+02:00", "utc": "1985-12-16T09:40:12Z", "ms": 503574012490.9437 }, "end": { "local": "1985-12-16T12:28:12+02:00", "utc": "1985-12-16T10:28:12Z", "ms": 503576892490.9437 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-17", "window": { "start": { "local": "1985-12-17T11:40:41+02:00", "utc": "1985-12-17T09:40:41Z", "ms": 503660441492.2547 }, "end": { "local": "1985-12-17T12:28:41+02:00", "utc": "1985-12-17T10:28:41Z", "ms": 503663321492.2547 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:55 on Mon 16 Dec to 14:41 on Tue 17 Dec.", "fact": "1985-12-16T12:54:57Z → 1985-12-17T12:41:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 16th, 11:41–12:29 on the 17th.", "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 16th and 48 of 48 on the 17th.", "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 7945 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Soweto, 1985: Tuesday 17 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-17", "confidence": "determinate" } ], "quote": "In Soweto, Campā Ṣaṣṭhī 1985 falls on Tuesday 17 December. Ṣaṣṭhī runs from 14:55 on Mon 16 Dec to 14:41 on Tue 17 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7945, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 }, "end": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-16T14:54:57+02:00", "utc": "1985-12-16T12:54:57Z", "ms": 503585697138.36444 }, "end": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-16", "window": { "start": { "local": "1985-12-16T11:40:12+02:00", "utc": "1985-12-16T09:40:12Z", "ms": 503574012490.9437 }, "end": { "local": "1985-12-16T12:28:12+02:00", "utc": "1985-12-16T10:28:12Z", "ms": 503576892490.9437 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-17", "window": { "start": { "local": "1985-12-17T11:40:41+02:00", "utc": "1985-12-17T09:40:41Z", "ms": 503660441492.2547 }, "end": { "local": "1985-12-17T12:28:41+02:00", "utc": "1985-12-17T10:28:41Z", "ms": 503663321492.2547 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:55 on Mon 16 Dec to 14:41 on Tue 17 Dec.", "fact": "1985-12-16T12:54:57Z → 1985-12-17T12:41:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 16th, 11:41–12:29 on the 17th.", "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 16th and 48 of 48 on the 17th.", "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 7945 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Soweto, 1985: Tuesday 17 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-17", "confidence": "determinate" } ], "quote": "In Soweto, Skanda Ṣaṣṭhī 1985 falls on Tuesday 17 December. Ṣaṣṭhī runs from 14:55 on Mon 16 Dec to 14:41 on Tue 17 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7945, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 }, "end": { "local": "1985-12-18T15:19:51+02:00", "utc": "1985-12-18T13:19:51Z", "ms": 503759991095.0489 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-17T14:41:07+02:00", "utc": "1985-12-17T12:41:07Z", "ms": 503671266650.17395 }, "end": { "local": "1985-12-18T15:19:51+02:00", "utc": "1985-12-18T13:19:51Z", "ms": 503759991095.0489 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-17", "window": { "start": { "local": "1985-12-17T11:40:41+02:00", "utc": "1985-12-17T09:40:41Z", "ms": 503660441492.2547 }, "end": { "local": "1985-12-17T12:28:41+02:00", "utc": "1985-12-17T10:28:41Z", "ms": 503663321492.2547 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1985-12-18", "window": { "start": { "local": "1985-12-18T11:41:11+02:00", "utc": "1985-12-18T09:41:11Z", "ms": 503746870659.32043 }, "end": { "local": "1985-12-18T12:29:11+02:00", "utc": "1985-12-18T10:29:11Z", "ms": 503749750659.32043 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:41 on Tue 17 Dec to 15:20 on Wed 18 Dec.", "fact": "1985-12-17T12:41:07Z → 1985-12-18T13:19:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 17th, 11:41–12:29 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "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 7945 s" }, { "step": "ruling", "text": "Mitra Saptamī, Soweto, 1985: Wednesday 18 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mitra-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Mitra saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1985-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-18", "confidence": "determinate" } ], "quote": "In Soweto, Mitra Saptamī 1985 falls on Wednesday 18 December. Saptamī runs from 14:41 on Tue 17 Dec to 15:20 on Wed 18 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/ekadashi?on=1985-12-22", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18101, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1985-12-21T21:26:42+02:00", "utc": "1985-12-21T19:26:42Z", "ms": 504041201986.0346 }, "end": { "local": "1985-12-23T00:12:30+02:00", "utc": "1985-12-22T22:12:30Z", "ms": 504137549718.5947 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-21T21:26:42+02:00", "utc": "1985-12-21T19:26:42Z", "ms": 504041201986.0346 }, "end": { "local": "1985-12-23T00:12:30+02:00", "utc": "1985-12-22T22:12:30Z", "ms": 504137549718.5947 } }, "kaala": "sunrise", "days": [ { "local_date": "1985-12-22", "window": { "start": { "local": "1985-12-22T05:13:41+02:00", "utc": "1985-12-22T03:13:41Z", "ms": 504069220525.8694 }, "end": { "local": "1985-12-22T05:13:41+02:00", "utc": "1985-12-22T03:13:41Z", "ms": 504069220525.8694 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-12-23", "window": { "start": { "local": "1985-12-23T05:14:11+02:00", "utc": "1985-12-23T03:14:11Z", "ms": 504155651187.36707 }, "end": { "local": "1985-12-23T05:14:11+02:00", "utc": "1985-12-23T03:14:11Z", "ms": 504155651187.36707 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:27 on Sat 21 Dec to 00:12 on Mon 23 Dec.", "fact": "1985-12-21T19:26:42Z → 1985-12-22T22:12:30Z" }, { "step": "kaala", "text": "Sunrise is at 05:14 on the 22nd and 05:14 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18101 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Soweto, 1985: Sunday 22 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": "1985-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-22", "confidence": "determinate" } ], "quote": "In Soweto, Mokṣadā Ekādaśī 1985 falls on Sunday 22 December. Ekādaśī runs from 21:27 on Sat 21 Dec to 00:12 on Mon 23 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/ekadashi?on=1985-12-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31616, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1985-12-23T00:12:30+02:00", "utc": "1985-12-22T22:12:30Z", "ms": 504137549718.5947 }, "end": { "local": "1985-12-24T02:57:11+02:00", "utc": "1985-12-24T00:57:11Z", "ms": 504233831118.4566 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-23T00:12:30+02:00", "utc": "1985-12-22T22:12:30Z", "ms": 504137549718.5947 }, "end": { "local": "1985-12-24T02:57:11+02:00", "utc": "1985-12-24T00:57:11Z", "ms": 504233831118.4566 } }, "kaala": "madhyahna", "days": [ { "local_date": "1985-12-23", "window": { "start": { "local": "1985-12-23T11:43:38+02:00", "utc": "1985-12-23T09:43:38Z", "ms": 504179017822.7002 }, "end": { "local": "1985-12-23T12:31:38+02:00", "utc": "1985-12-23T10:31:38Z", "ms": 504181897822.7002 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1985-12-24", "window": { "start": { "local": "1985-12-24T11:44:07+02:00", "utc": "1985-12-24T09:44:07Z", "ms": 504265447294.94507 }, "end": { "local": "1985-12-24T12:32:07+02:00", "utc": "1985-12-24T10:32:07Z", "ms": 504268327294.94507 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 00:12 on Mon 23 Dec to 02:57 on Tue 24 Dec.", "fact": "1985-12-22T22:12:30Z → 1985-12-24T00:57:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 23rd, 11:44–12:32 on the 24th.", "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 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 31616 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Soweto, 1985: Monday 23 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": "1985-12-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-23", "confidence": "determinate" } ], "quote": "In Soweto, Akhaṇḍa Dvādaśī 1985 falls on Monday 23 December. Dvādaśī runs from 00:12 on Mon 23 Dec to 02:57 on Tue 24 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/pradosha-vrata?on=1985-12-24", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23658, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1985-12-24T02:57:11+02:00", "utc": "1985-12-24T00:57:11Z", "ms": 504233831118.4566 }, "end": { "local": "1985-12-25T05:29:37+02:00", "utc": "1985-12-25T03:29:37Z", "ms": 504329377434.2719 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-24T02:57:11+02:00", "utc": "1985-12-24T00:57:11Z", "ms": 504233831118.4566 }, "end": { "local": "1985-12-25T05:29:37+02:00", "utc": "1985-12-25T03:29:37Z", "ms": 504329377434.2719 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-12-23", "window": { "start": { "local": "1985-12-23T19:01:04+02:00", "utc": "1985-12-23T17:01:04Z", "ms": 504205264458.0333 }, "end": { "local": "1985-12-23T20:22:54+02:00", "utc": "1985-12-23T18:22:54Z", "ms": 504210173593.9587 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "1985-12-24", "window": { "start": { "local": "1985-12-24T19:01:32+02:00", "utc": "1985-12-24T17:01:32Z", "ms": 504291691612.4166 }, "end": { "local": "1985-12-24T20:23:22+02:00", "utc": "1985-12-24T18:23:22Z", "ms": 504296601512.43427 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:57 on Tue 24 Dec to 05:30 on Wed 25 Dec.", "fact": "1985-12-24T00:57:11Z → 1985-12-25T03:29:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:01–20:23 on the 23rd, 19:02–20:23 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 23rd and 82 of 82 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 23658 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Soweto, 1985: Tuesday 24 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": "1985-12-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-24", "confidence": "determinate" } ], "quote": "In Soweto, Śukla Pradoṣa Vrata 1985 falls on Tuesday 24 December. Trayodaśī runs from 02:57 on Tue 24 Dec to 05:30 on Wed 25 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/pradosha-vrata?on=1985-12-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/soweto/festivals/1985/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34347, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1985-12-26T07:42:06+02:00", "utc": "1985-12-26T05:42:06Z", "ms": 504423725745.74884 }, "end": { "local": "1985-12-27T09:30:18+02:00", "utc": "1985-12-27T07:30:18Z", "ms": 504516618302.7925 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-26T07:42:06+02:00", "utc": "1985-12-26T05:42:06Z", "ms": 504423725745.74884 }, "end": { "local": "1985-12-27T09:30:18+02:00", "utc": "1985-12-27T07:30:18Z", "ms": 504516618302.7925 } }, "kaala": "pradosha", "days": [ { "local_date": "1985-12-26", "window": { "start": { "local": "1985-12-26T19:02:22+02:00", "utc": "1985-12-26T17:02:22Z", "ms": 504464542246.866 }, "end": { "local": "1985-12-26T20:24:15+02:00", "utc": "1985-12-26T18:24:15Z", "ms": 504469454584.66064 } }, "covered_min": 82, "window_min": 82, "qualifies": true }, { "local_date": "1985-12-27", "window": { "start": { "local": "1985-12-27T19:02:46+02:00", "utc": "1985-12-27T17:02:46Z", "ms": 504550965674.03577 }, "end": { "local": "1985-12-27T20:24:40+02:00", "utc": "1985-12-27T18:24:40Z", "ms": 504555879683.2635 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:42 on Thu 26 Dec to 09:30 on Fri 27 Dec.", "fact": "1985-12-26T05:42:06Z → 1985-12-27T07:30:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:02–20:24 on the 26th, 19:03–20:25 on the 27th.", "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 26th and 0 of 82 on the 27th.", "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 34347 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Soweto, 1985: Thursday 26 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": "1985-12-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-26", "confidence": "determinate" } ], "quote": "In Soweto, Dattātreyotpatti (Datta Jayanti) 1985 falls on Thursday 26 December. Pūrṇimā runs from 07:42 on Thu 26 Dec to 09:30 on Fri 27 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/soweto/festivals/1985/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": "/soweto/festivals/1985/sankashta-chaturthi?on=1985-12-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "953781", "year": 1985, "local_date": "1985-12-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34094, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1985-12-30T12:21:17+02:00", "utc": "1985-12-30T10:21:17Z", "ms": 504786076957.5911 }, "end": { "local": "1985-12-31T12:29:12+02:00", "utc": "1985-12-31T10:29:12Z", "ms": 504872951570.763 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1985-12-30T12:21:17+02:00", "utc": "1985-12-30T10:21:17Z", "ms": 504786076957.5911 }, "end": { "local": "1985-12-31T12:29:12+02:00", "utc": "1985-12-31T10:29:12Z", "ms": 504872951570.763 } }, "kaala": "moonrise", "days": [ { "local_date": "1985-12-30", "window": { "start": { "local": "1985-12-30T21:49:30+02:00", "utc": "1985-12-30T19:49:30Z", "ms": 504820170495.5072 }, "end": { "local": "1985-12-30T21:49:30+02:00", "utc": "1985-12-30T19:49:30Z", "ms": 504820170495.5072 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1985-12-31", "window": { "start": { "local": "1985-12-31T22:26:18+02:00", "utc": "1985-12-31T20:26:18Z", "ms": 504908777955.57745 }, "end": { "local": "1985-12-31T22:26:18+02:00", "utc": "1985-12-31T20:26:18Z", "ms": 504908777955.57745 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:21 on Mon 30 Dec to 12:29 on Tue 31 Dec.", "fact": "1985-12-30T10:21:17Z → 1985-12-31T10:29:12Z" }, { "step": "kaala", "text": "Moonrise is at 21:50 on the 30th and 22:26 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 30th and is not on the 31st.", "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 34094 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Soweto, 1985: Monday 30 December.", "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": "1985-12-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1985-12-30", "confidence": "determinate" } ], "quote": "In Soweto, Saṅkaṣṭa Caturthī 1985 falls on Monday 30 December. Caturthī runs from 12:21 on Mon 30 Dec to 12:29 on Tue 31 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/soweto/festivals/1985/sankashta-chaturthi?on=1985-12-30", "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" } }