{ "id": "/cali/festivals/1981", "place": { "id": "3687925", "slug": "cali", "name": "Cali", "region": "Valle del Cauca Department, Colombia", "country": "CO", "lat": 3.43054, "lon": -76.5199, "elevation_m": 758, "tz": "America/Bogota" }, "year": 1981, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/cali/festivals/1981/ekadashi?on=1981-01-01", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29221, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1980-12-31T19:50:38-05:00", "utc": "1981-01-01T00:50:38Z", "ms": 347158238316.0212 }, "end": { "local": "1981-01-01T22:05:34-05:00", "utc": "1981-01-02T03:05:34Z", "ms": 347252734100.33154 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1980-12-31T19:50:38-05:00", "utc": "1981-01-01T00:50:38Z", "ms": 347158238316.0212 }, "end": { "local": "1981-01-01T22:05:34-05:00", "utc": "1981-01-02T03:05:34Z", "ms": 347252734100.33154 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-01-01", "window": { "start": { "local": "1981-01-01T06:12:08-05:00", "utc": "1981-01-01T11:12:08Z", "ms": 347195527969.5444 }, "end": { "local": "1981-01-01T06:12:08-05:00", "utc": "1981-01-01T11:12:08Z", "ms": 347195527969.5444 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-01-02", "window": { "start": { "local": "1981-01-02T06:12:35-05:00", "utc": "1981-01-02T11:12:35Z", "ms": 347281954790.0593 }, "end": { "local": "1981-01-02T06:12:35-05:00", "utc": "1981-01-02T11:12:35Z", "ms": 347281954790.0593 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:51 on Wed 31 Dec to 22:06 on Thu 1 Jan.", "fact": "1981-01-01T00:50:38Z → 1981-01-02T03:05:34Z" }, { "step": "kaala", "text": "Sunrise is at 06:12 on the 1st and 06:13 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 29221 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Cali, 1981: Thursday 1 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": "1981-01-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-01", "confidence": "determinate" } ], "quote": "In Cali, Saphalā Ekādaśī 1981 falls on Thursday 1 January. Ekādaśī runs from 19:51 on Wed 31 Dec to 22:06 on Thu 1 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-01-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-01-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15075, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-01-02T23:55:55-05:00", "utc": "1981-01-03T04:55:55Z", "ms": 347345755300.01794 }, "end": { "local": "1981-01-04T01:16:32-05:00", "utc": "1981-01-04T06:16:32Z", "ms": 347436992198.3991 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-01-02T23:55:55-05:00", "utc": "1981-01-03T04:55:55Z", "ms": 347345755300.01794 }, "end": { "local": "1981-01-04T01:16:32-05:00", "utc": "1981-01-04T06:16:32Z", "ms": 347436992198.3991 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-01-02", "window": { "start": { "local": "1981-01-02T18:08:01-05:00", "utc": "1981-01-02T23:08:01Z", "ms": 347324880570.6577 }, "end": { "local": "1981-01-02T19:44:41-05:00", "utc": "1981-01-03T00:44:41Z", "ms": 347330680648.3357 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1981-01-03", "window": { "start": { "local": "1981-01-03T18:08:30-05:00", "utc": "1981-01-03T23:08:30Z", "ms": 347411309751.9902 }, "end": { "local": "1981-01-03T19:45:09-05:00", "utc": "1981-01-04T00:45:09Z", "ms": 347417109388.7084 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:56 on Fri 2 Jan to 01:17 on Sun 4 Jan.", "fact": "1981-01-03T04:55:55Z → 1981-01-04T06:16:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:08–19:45 on the 2nd, 18:08–19:45 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 97 minutes on the 2nd and 97 of 97 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 15075 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Saturday 3 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": "1981-01-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-03", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Saturday 3 January. Trayodaśī runs from 23:56 on Fri 2 Jan to 01:17 on Sun 4 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-01-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-01-04", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2494, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-01-04T01:16:32-05:00", "utc": "1981-01-04T06:16:32Z", "ms": 347436992198.3991 }, "end": { "local": "1981-01-05T02:05:38-05:00", "utc": "1981-01-05T07:05:38Z", "ms": 347526338183.52924 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-01-04T01:16:32-05:00", "utc": "1981-01-04T06:16:32Z", "ms": 347436992198.3991 }, "end": { "local": "1981-01-05T02:05:38-05:00", "utc": "1981-01-05T07:05:38Z", "ms": 347526338183.52924 } }, "kaala": "nishita", "days": [ { "local_date": "1981-01-03", "window": { "start": { "local": "1981-01-03T23:46:58-05:00", "utc": "1981-01-04T04:46:58Z", "ms": 347431618389.68335 }, "end": { "local": "1981-01-04T00:34:58-05:00", "utc": "1981-01-04T05:34:58Z", "ms": 347434498389.68335 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-01-04", "window": { "start": { "local": "1981-01-04T23:47:26-05:00", "utc": "1981-01-05T04:47:26Z", "ms": 347518045519.2346 }, "end": { "local": "1981-01-05T00:35:26-05:00", "utc": "1981-01-05T05:35:26Z", "ms": 347520925519.2346 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:17 on Sun 4 Jan to 02:06 on Mon 5 Jan.", "fact": "1981-01-04T06:16:32Z → 1981-01-05T07:05:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:47–00:35 on the 3rd, 23:47–00:35 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2494 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Sunday 4 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": "1981-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-04", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Sunday 4 January. Caturdaśī runs from 01:17 on Sun 4 Jan to 02:06 on Mon 5 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-01-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38935, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-01-09T00:42:01-05:00", "utc": "1981-01-09T05:42:01Z", "ms": 347866921073.54486 }, "end": { "local": "1981-01-09T23:26:18-05:00", "utc": "1981-01-10T04:26:18Z", "ms": 347948778286.5653 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-01-09T00:42:01-05:00", "utc": "1981-01-09T05:42:01Z", "ms": 347866921073.54486 }, "end": { "local": "1981-01-09T23:26:18-05:00", "utc": "1981-01-10T04:26:18Z", "ms": 347948778286.5653 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-01-08", "window": { "start": { "local": "1981-01-08T11:48:58-05:00", "utc": "1981-01-08T16:48:58Z", "ms": 347820537929.1449 }, "end": { "local": "1981-01-08T12:36:58-05:00", "utc": "1981-01-08T17:36:58Z", "ms": 347823417929.1449 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-01-09", "window": { "start": { "local": "1981-01-09T11:49:23-05:00", "utc": "1981-01-09T16:49:23Z", "ms": 347906962925.0878 }, "end": { "local": "1981-01-09T12:37:23-05:00", "utc": "1981-01-09T17:37:23Z", "ms": 347909842925.0878 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:42 on Fri 9 Jan to 23:26 on Fri 9 Jan.", "fact": "1981-01-09T05:42:01Z → 1981-01-10T04:26:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 8th, 11:49–12:37 on the 9th.", "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 8th and 48 of 48 on the 9th.", "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 38935 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Friday 9 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-01-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-09", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Friday 9 January. Caturthī runs from 00:42 on Fri 9 Jan to 23:26 on Fri 9 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-01-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9968, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-02-12T04:28:15-05:00", "utc": "1981-02-12T09:28:15Z", "ms": 350818095129.987 } }, "span": { "of": "transit", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 } }, "kaala": "sunset-day", "days": [ { "local_date": "1981-01-13", "window": { "start": { "local": "1981-01-12T18:12:36-05:00", "utc": "1981-01-12T23:12:36Z", "ms": 348189156028.3696 }, "end": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1981-01-14", "window": { "start": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 }, "end": { "local": "1981-01-14T18:13:25-05:00", "utc": "1981-01-14T23:13:25Z", "ms": 348362005430.82855 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1981-01-13", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 15:27 on Tue 13 Jan.", "fact": "1981-01-13T20:26:53Z · 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 18:13, and the day of the 14th ends at 18:13.", "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 12th and the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 9968 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Tuesday 13 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Cali, 1981: Monday 12 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": "1981-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-12", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1981-01-12", "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": "1981-01-12", "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 Cali, Bhogi 1981 falls on Monday 12 January. It is kept the day before Pongal, which falls on Tuesday 13 January. The Sun enters Makara at 15:27 on Tue 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9968, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-02-12T04:28:15-05:00", "utc": "1981-02-12T09:28:15Z", "ms": 350818095129.987 } }, "span": { "of": "transit", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 } }, "kaala": "sunset-day", "days": [ { "local_date": "1981-01-13", "window": { "start": { "local": "1981-01-12T18:12:36-05:00", "utc": "1981-01-12T23:12:36Z", "ms": 348189156028.3696 }, "end": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1981-01-14", "window": { "start": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 }, "end": { "local": "1981-01-14T18:13:25-05:00", "utc": "1981-01-14T23:13:25Z", "ms": 348362005430.82855 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 15:27 on Tue 13 Jan.", "fact": "1981-01-13T20:26:53Z · 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 18:13, and the day of the 14th ends at 18:13.", "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 12th and the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 9968 s" }, { "step": "ruling", "text": "Pongal, Cali, 1981: Tuesday 13 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": "1981-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1981-01-13", "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": "1981-01-13", "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 Cali, Pongal 1981 falls on Tuesday 13 January. The Sun enters Makara at 15:27 on Tue 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30787, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-02-12T04:28:15-05:00", "utc": "1981-02-12T09:28:15Z", "ms": 350818095129.987 } }, "span": { "of": "transit", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 } }, "kaala": "civil-day", "days": [ { "local_date": "1981-01-13", "window": { "start": { "local": "1981-01-13T00:00:00-05:00", "utc": "1981-01-13T05:00:00Z", "ms": 348210000000 }, "end": { "local": "1981-01-14T00:00:00-05:00", "utc": "1981-01-14T05:00:00Z", "ms": 348296400000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1981-01-14", "window": { "start": { "local": "1981-01-14T00:00:00-05:00", "utc": "1981-01-14T05:00:00Z", "ms": 348296400000 }, "end": { "local": "1981-01-15T00:00:00-05:00", "utc": "1981-01-15T05:00:00Z", "ms": 348382800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 15:27 on Tue 13 Jan.", "fact": "1981-01-13T20:26:53Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Cali.", "fact": "civil-day: midnight-to-midnight · America/Bogota" }, { "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 30787 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Cali, 1981: Tuesday 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": "1981-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1981-01-13", "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": "1981-01-13", "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 Cali, Makara Saṅkrānti 1981 falls on Tuesday 13 January. The Sun enters Makara at 15:27 on Tue 13 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9968, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-02-12T04:28:15-05:00", "utc": "1981-02-12T09:28:15Z", "ms": 350818095129.987 } }, "span": { "of": "transit", "start": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 }, "end": { "local": "1981-01-13T15:26:53-05:00", "utc": "1981-01-13T20:26:53Z", "ms": 348265613318.17065 } }, "kaala": "sunset-day", "days": [ { "local_date": "1981-01-13", "window": { "start": { "local": "1981-01-12T18:12:36-05:00", "utc": "1981-01-12T23:12:36Z", "ms": 348189156028.3696 }, "end": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1981-01-14", "window": { "start": { "local": "1981-01-13T18:13:01-05:00", "utc": "1981-01-13T23:13:01Z", "ms": 348275581014.61206 }, "end": { "local": "1981-01-14T18:13:25-05:00", "utc": "1981-01-14T23:13:25Z", "ms": 348362005430.82855 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1981-01-13", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 15:27 on Tue 13 Jan.", "fact": "1981-01-13T20:26:53Z · 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 18:13, and the day of the 14th ends at 18:13.", "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 12th and the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 9968 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Tuesday 13 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Cali, 1981: Wednesday 14 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": "1981-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1981-01-14", "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": "1981-01-14", "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 Cali, Mattu Pongal 1981 falls on Wednesday 14 January. It is kept the day after Pongal, which falls on Tuesday 13 January. The Sun enters Makara at 15:27 on Tue 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-01-16", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11277, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-01-15T11:38:59-05:00", "utc": "1981-01-15T16:38:59Z", "ms": 348424738877.58954 }, "end": { "local": "1981-01-16T09:25:46-05:00", "utc": "1981-01-16T14:25:46Z", "ms": 348503145853.60675 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-01-15T11:38:59-05:00", "utc": "1981-01-15T16:38:59Z", "ms": 348424738877.58954 }, "end": { "local": "1981-01-16T09:25:46-05:00", "utc": "1981-01-16T14:25:46Z", "ms": 348503145853.60675 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-01-15", "window": { "start": { "local": "1981-01-15T06:17:31-05:00", "utc": "1981-01-15T11:17:31Z", "ms": 348405450861.8395 }, "end": { "local": "1981-01-15T06:17:31-05:00", "utc": "1981-01-15T11:17:31Z", "ms": 348405450861.8395 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-01-16", "window": { "start": { "local": "1981-01-16T06:17:49-05:00", "utc": "1981-01-16T11:17:49Z", "ms": 348491868668.94476 }, "end": { "local": "1981-01-16T06:17:49-05:00", "utc": "1981-01-16T11:17:49Z", "ms": 348491868668.94476 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:39 on Thu 15 Jan to 09:26 on Fri 16 Jan.", "fact": "1981-01-15T16:38:59Z → 1981-01-16T14:25:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:18 on the 15th and 06:18 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11277 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Cali, 1981: Friday 16 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": "1981-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-16", "confidence": "determinate" } ], "quote": "In Cali, Putradā Ekādaśī 1981 falls on Friday 16 January. Ekādaśī runs from 11:39 on Thu 15 Jan to 09:26 on Fri 16 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-01-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-01-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34445, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-01-17T07:19:15-05:00", "utc": "1981-01-17T12:19:15Z", "ms": 348581955203.7646 }, "end": { "local": "1981-01-18T05:25:11-05:00", "utc": "1981-01-18T10:25:11Z", "ms": 348661510618.66455 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-01-17T07:19:15-05:00", "utc": "1981-01-17T12:19:15Z", "ms": 348581955203.7646 }, "end": { "local": "1981-01-18T05:25:11-05:00", "utc": "1981-01-18T10:25:11Z", "ms": 348661510618.66455 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-01-16", "window": { "start": { "local": "1981-01-16T18:14:12-05:00", "utc": "1981-01-16T23:14:12Z", "ms": 348534852477.7929 }, "end": { "local": "1981-01-16T19:50:44-05:00", "utc": "1981-01-17T00:50:44Z", "ms": 348540643570.2279 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1981-01-17", "window": { "start": { "local": "1981-01-17T18:14:35-05:00", "utc": "1981-01-17T23:14:35Z", "ms": 348621275076.1821 }, "end": { "local": "1981-01-17T19:51:05-05:00", "utc": "1981-01-18T00:51:05Z", "ms": 348627065313.71155 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:19 on Sat 17 Jan to 05:25 on Sun 18 Jan.", "fact": "1981-01-17T12:19:15Z → 1981-01-18T10:25:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:14–19:51 on the 16th, 18:15–19:51 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 97 minutes on the 16th and 97 of 97 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 34445 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Saturday 17 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": "1981-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-17", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Saturday 17 January. Trayodaśī runs from 07:19 on Sat 17 Jan to 05:25 on Sun 18 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-01-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/sankashta-chaturthi?on=1981-01-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21356, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-01-23T02:26:36-05:00", "utc": "1981-01-23T07:26:36Z", "ms": 349082796315.67535 }, "end": { "local": "1981-01-24T03:37:24-05:00", "utc": "1981-01-24T08:37:24Z", "ms": 349173443840.836 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-01-23T02:26:36-05:00", "utc": "1981-01-23T07:26:36Z", "ms": 349082796315.67535 }, "end": { "local": "1981-01-24T03:37:24-05:00", "utc": "1981-01-24T08:37:24Z", "ms": 349173443840.836 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-01-22", "window": { "start": { "local": "1981-01-22T20:30:40-05:00", "utc": "1981-01-23T01:30:40Z", "ms": 349061439892.0013 }, "end": { "local": "1981-01-22T20:30:40-05:00", "utc": "1981-01-23T01:30:40Z", "ms": 349061439892.0013 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-01-23", "window": { "start": { "local": "1981-01-23T21:17:28-05:00", "utc": "1981-01-24T02:17:28Z", "ms": 349150647687.18475 }, "end": { "local": "1981-01-23T21:17:28-05:00", "utc": "1981-01-24T02:17:28Z", "ms": 349150647687.18475 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:27 on Fri 23 Jan to 03:37 on Sat 24 Jan.", "fact": "1981-01-23T07:26:36Z → 1981-01-24T08:37:24Z" }, { "step": "kaala", "text": "Moonrise is at 20:31 on the 22nd and 21:17 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21356 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Friday 23 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-23", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Friday 23 January. Caturthī runs from 02:27 on Fri 23 Jan to 03:37 on Sat 24 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-01-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-01-31", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37683, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-01-30T16:48:34-05:00", "utc": "1981-01-30T21:48:34Z", "ms": 349739313714.7193 }, "end": { "local": "1981-01-31T18:10:57-05:00", "utc": "1981-01-31T23:10:57Z", "ms": 349830657094.1563 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-01-30T16:48:34-05:00", "utc": "1981-01-30T21:48:34Z", "ms": 349739313714.7193 }, "end": { "local": "1981-01-31T18:10:57-05:00", "utc": "1981-01-31T23:10:57Z", "ms": 349830657094.1563 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-01-30", "window": { "start": { "local": "1981-01-30T06:20:30-05:00", "utc": "1981-01-30T11:20:30Z", "ms": 349701630223.8938 }, "end": { "local": "1981-01-30T06:20:30-05:00", "utc": "1981-01-30T11:20:30Z", "ms": 349701630223.8938 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-01-31", "window": { "start": { "local": "1981-01-31T06:20:35-05:00", "utc": "1981-01-31T11:20:35Z", "ms": 349788035318.69775 }, "end": { "local": "1981-01-31T06:20:35-05:00", "utc": "1981-01-31T11:20:35Z", "ms": 349788035318.69775 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:49 on Fri 30 Jan to 18:11 on Sat 31 Jan.", "fact": "1981-01-30T21:48:34Z → 1981-01-31T23:10:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:21 on the 30th and 06:21 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37683 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Cali, 1981: Saturday 31 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": "1981-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-01-31", "confidence": "determinate" } ], "quote": "In Cali, Ṣaṭtilā Ekādaśī 1981 falls on Saturday 31 January. Ekādaśī runs from 16:49 on Fri 30 Jan to 18:11 on Sat 31 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-01-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-02-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-01", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2148, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-02-01T18:54:41-05:00", "utc": "1981-02-01T23:54:41Z", "ms": 349919680829.01044 }, "end": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-01T18:54:41-05:00", "utc": "1981-02-01T23:54:41Z", "ms": 349919680829.01044 }, "end": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-02-01", "window": { "start": { "local": "1981-02-01T18:18:53-05:00", "utc": "1981-02-01T23:18:53Z", "ms": 349917532707.0085 }, "end": { "local": "1981-02-01T19:55:07-05:00", "utc": "1981-02-02T00:55:07Z", "ms": 349923307399.05426 } }, "covered_min": 60, "window_min": 96, "qualifies": true }, { "local_date": "1981-02-02", "window": { "start": { "local": "1981-02-02T18:19:04-05:00", "utc": "1981-02-02T23:19:04Z", "ms": 350003944142.91565 }, "end": { "local": "1981-02-02T19:55:18-05:00", "utc": "1981-02-03T00:55:18Z", "ms": 350009717641.33 } }, "covered_min": 39, "window_min": 96, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:55 on Sun 1 Feb to 18:58 on Mon 2 Feb.", "fact": "1981-02-01T23:54:41Z → 1981-02-02T23:58:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–19:55 on the 1st, 18:19–19:55 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 60 of 96 minutes on the 1st and 39 of 96 on the 2nd.", "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 2148 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Sunday 1 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": "1981-02-01", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-01", "confidence": "boundary" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Sunday 1 February. Trayodaśī runs from 18:55 on Sun 1 Feb to 18:58 on Mon 2 Feb and covers 60 of 96 minutes of pradoṣa that evening. It also reaches the next evening for 39 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/cali/festivals/1981/pradosha-vrata?on=1981-02-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-02-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17865, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 }, "end": { "local": "1981-02-03T18:23:09-05:00", "utc": "1981-02-03T23:23:09Z", "ms": 350090588500.2604 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 }, "end": { "local": "1981-02-03T18:23:09-05:00", "utc": "1981-02-03T23:23:09Z", "ms": 350090588500.2604 } }, "kaala": "nishita", "days": [ { "local_date": "1981-02-02", "window": { "start": { "local": "1981-02-02T23:55:55-05:00", "utc": "1981-02-03T04:55:55Z", "ms": 350024154761.96954 }, "end": { "local": "1981-02-03T00:43:55-05:00", "utc": "1981-02-03T05:43:55Z", "ms": 350027034761.96954 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-02-03", "window": { "start": { "local": "1981-02-03T23:56:01-05:00", "utc": "1981-02-04T04:56:01Z", "ms": 350110560914.1289 }, "end": { "local": "1981-02-04T00:44:01-05:00", "utc": "1981-02-04T05:44:01Z", "ms": 350113440914.1289 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:58 on Mon 2 Feb to 18:23 on Tue 3 Feb.", "fact": "1981-02-02T23:58:10Z → 1981-02-03T23:23:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:56–00:44 on the 2nd, 23:56–00:44 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17865 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Monday 2 February.", "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": "1981-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-02", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Monday 2 February. Caturdaśī runs from 18:58 on Mon 2 Feb to 18:23 on Tue 3 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-02-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35182, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 }, "end": { "local": "1981-02-03T18:23:09-05:00", "utc": "1981-02-03T23:23:09Z", "ms": 350090588500.2604 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-02T18:58:10-05:00", "utc": "1981-02-02T23:58:10Z", "ms": 350006290221.0994 }, "end": { "local": "1981-02-03T18:23:09-05:00", "utc": "1981-02-03T23:23:09Z", "ms": 350090588500.2604 } }, "kaala": "arunodaya", "days": [ { "local_date": "1981-02-03", "window": { "start": { "local": "1981-02-03T04:44:32-05:00", "utc": "1981-02-03T09:44:32Z", "ms": 350041471882.6091 }, "end": { "local": "1981-02-03T06:20:45-05:00", "utc": "1981-02-03T11:20:45Z", "ms": 350047245381.02344 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-02-04", "window": { "start": { "local": "1981-02-04T04:44:35-05:00", "utc": "1981-02-04T09:44:35Z", "ms": 350127874706.37195 }, "end": { "local": "1981-02-04T06:20:47-05:00", "utc": "1981-02-04T11:20:47Z", "ms": 350133646994.4603 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:58 on Mon 2 Feb to 18:23 on Tue 3 Feb.", "fact": "1981-02-02T23:58:10Z → 1981-02-03T23:23:09Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:45–06:21 on the 3rd, 04:45–06:21 on the 4th.", "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 96 of 96 minutes on the 3rd and 0 of 96 on the 4th.", "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 35182 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Cali, 1981: Tuesday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-03", "confidence": "determinate" } ], "quote": "In Cali, Yama Tarpaṇa 1981 falls on Tuesday 3 February. Caturdaśī runs from 18:58 on Mon 2 Feb to 18:23 on Tue 3 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2142, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-02-07T11:20:37-05:00", "utc": "1981-02-07T16:20:37Z", "ms": 350410836560.28217 }, "end": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-07T11:20:37-05:00", "utc": "1981-02-07T16:20:37Z", "ms": 350410836560.28217 }, "end": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-02-07", "window": { "start": { "local": "1981-02-07T11:56:18-05:00", "utc": "1981-02-07T16:56:18Z", "ms": 350412978354.5518 }, "end": { "local": "1981-02-07T12:44:18-05:00", "utc": "1981-02-07T17:44:18Z", "ms": 350415858354.5518 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-02-08", "window": { "start": { "local": "1981-02-08T11:56:21-05:00", "utc": "1981-02-08T16:56:21Z", "ms": 350499380890.8856 }, "end": { "local": "1981-02-08T12:44:21-05:00", "utc": "1981-02-08T17:44:21Z", "ms": 350502260890.8856 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:21 on Sat 7 Feb to 08:57 on Sun 8 Feb.", "fact": "1981-02-07T16:20:37Z → 1981-02-08T13:56:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 7th, 11:56–12:44 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2142 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Cali, 1981: Saturday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-07", "confidence": "determinate" } ], "quote": "In Cali, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1981 falls on Saturday 7 February. Caturthī runs from 11:21 on Sat 7 Feb to 08:57 on Sun 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25154, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-02-07T11:20:37-05:00", "utc": "1981-02-07T16:20:37Z", "ms": 350410836560.28217 }, "end": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-07T11:20:37-05:00", "utc": "1981-02-07T16:20:37Z", "ms": 350410836560.28217 }, "end": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-02-07", "window": { "start": { "local": "1981-02-07T18:19:50-05:00", "utc": "1981-02-07T23:19:50Z", "ms": 350435990088.14825 }, "end": { "local": "1981-02-07T19:55:57-05:00", "utc": "1981-02-08T00:55:57Z", "ms": 350441757378.38556 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-02-08", "window": { "start": { "local": "1981-02-08T18:19:57-05:00", "utc": "1981-02-08T23:19:57Z", "ms": 350522397016.84314 }, "end": { "local": "1981-02-08T19:56:03-05:00", "utc": "1981-02-09T00:56:03Z", "ms": 350528163021.2074 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:21 on Sat 7 Feb to 08:57 on Sun 8 Feb.", "fact": "1981-02-07T16:20:37Z → 1981-02-08T13:56:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:20–19:56 on the 7th, 18:20–19:56 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 96 of 96 minutes on the 7th and 0 of 96 on the 8th.", "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 25154 s" }, { "step": "ruling", "text": "Tila Caturthī, Cali, 1981: Saturday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-07", "confidence": "determinate" } ], "quote": "In Cali, Tila Caturthī 1981 falls on Saturday 7 February. Caturthī runs from 11:21 on Sat 7 Feb to 08:57 on Sun 8 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10765, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "end": { "local": "1981-02-09T06:30:54-05:00", "utc": "1981-02-09T11:30:54Z", "ms": 350566254077.86145 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "end": { "local": "1981-02-09T06:30:54-05:00", "utc": "1981-02-09T11:30:54Z", "ms": 350566254077.86145 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-02-08", "window": { "start": { "local": "1981-02-08T11:56:21-05:00", "utc": "1981-02-08T16:56:21Z", "ms": 350499380890.8856 }, "end": { "local": "1981-02-08T12:44:21-05:00", "utc": "1981-02-08T17:44:21Z", "ms": 350502260890.8856 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-02-09", "window": { "start": { "local": "1981-02-09T11:56:23-05:00", "utc": "1981-02-09T16:56:23Z", "ms": 350585782621.44354 }, "end": { "local": "1981-02-09T12:44:23-05:00", "utc": "1981-02-09T17:44:23Z", "ms": 350588662621.44354 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:57 on Sun 8 Feb to 06:31 on Mon 9 Feb.", "fact": "1981-02-08T13:56:56Z → 1981-02-09T11:30:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 8th, 11:56–12:44 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10765 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Cali, 1981: Sunday 8 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-08", "confidence": "determinate" } ], "quote": "In Cali, Śrī Pañcamī 1981 falls on Sunday 8 February. Pañcamī runs from 08:57 on Sun 8 Feb to 06:31 on Mon 9 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10765, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "end": { "local": "1981-02-09T06:30:54-05:00", "utc": "1981-02-09T11:30:54Z", "ms": 350566254077.86145 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-08T08:56:56-05:00", "utc": "1981-02-08T13:56:56Z", "ms": 350488615853.4666 }, "end": { "local": "1981-02-09T06:30:54-05:00", "utc": "1981-02-09T11:30:54Z", "ms": 350566254077.86145 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-02-08", "window": { "start": { "local": "1981-02-08T11:56:21-05:00", "utc": "1981-02-08T16:56:21Z", "ms": 350499380890.8856 }, "end": { "local": "1981-02-08T12:44:21-05:00", "utc": "1981-02-08T17:44:21Z", "ms": 350502260890.8856 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-02-09", "window": { "start": { "local": "1981-02-09T11:56:23-05:00", "utc": "1981-02-09T16:56:23Z", "ms": 350585782621.44354 }, "end": { "local": "1981-02-09T12:44:23-05:00", "utc": "1981-02-09T17:44:23Z", "ms": 350588662621.44354 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:57 on Sun 8 Feb to 06:31 on Mon 9 Feb.", "fact": "1981-02-08T13:56:56Z → 1981-02-09T11:30:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 8th, 11:56–12:44 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10765 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Cali, 1981: Sunday 8 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-08", "confidence": "determinate" } ], "quote": "In Cali, Vasanta Pañcamī 1981 falls on Sunday 8 February. Pañcamī runs from 08:57 on Sun 8 Feb to 06:31 on Mon 9 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2196, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-02-10T04:07:58-05:00", "utc": "1981-02-10T09:07:58Z", "ms": 350644077505.1237 }, "end": { "local": "1981-02-11T01:52:42-05:00", "utc": "1981-02-11T06:52:42Z", "ms": 350722361753.4865 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-10T04:07:58-05:00", "utc": "1981-02-10T09:07:58Z", "ms": 350644077505.1237 }, "end": { "local": "1981-02-11T01:52:42-05:00", "utc": "1981-02-11T06:52:42Z", "ms": 350722361753.4865 } }, "kaala": "arunodaya", "days": [ { "local_date": "1981-02-10", "window": { "start": { "local": "1981-02-10T04:44:34-05:00", "utc": "1981-02-10T09:44:34Z", "ms": 350646273776.1914 }, "end": { "local": "1981-02-10T06:20:38-05:00", "utc": "1981-02-10T11:20:38Z", "ms": 350652038481.2498 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-02-11", "window": { "start": { "local": "1981-02-11T04:44:31-05:00", "utc": "1981-02-11T09:44:31Z", "ms": 350732670675.4294 }, "end": { "local": "1981-02-11T06:20:34-05:00", "utc": "1981-02-11T11:20:34Z", "ms": 350738434068.32965 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:08 on Tue 10 Feb to 01:53 on Wed 11 Feb.", "fact": "1981-02-10T09:07:58Z → 1981-02-11T06:52:42Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:45–06:21 on the 10th, 04:45–06:21 on the 11th.", "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 96 of 96 minutes on the 10th and 0 of 96 on the 11th.", "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 2196 s" }, { "step": "ruling", "text": "Ratha Saptamī, Cali, 1981: Tuesday 10 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-10", "confidence": "determinate" } ], "quote": "In Cali, Ratha Saptamī 1981 falls on Tuesday 10 February. Saptamī runs from 04:08 on Tue 10 Feb to 01:53 on Wed 11 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-02-14", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35628, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-02-13T20:26:28-05:00", "utc": "1981-02-14T01:26:28Z", "ms": 350961987634.47577 }, "end": { "local": "1981-02-14T19:12:12-05:00", "utc": "1981-02-15T00:12:12Z", "ms": 351043931757.07263 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-13T20:26:28-05:00", "utc": "1981-02-14T01:26:28Z", "ms": 350961987634.47577 }, "end": { "local": "1981-02-14T19:12:12-05:00", "utc": "1981-02-15T00:12:12Z", "ms": 351043931757.07263 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-02-14", "window": { "start": { "local": "1981-02-14T06:20:16-05:00", "utc": "1981-02-14T11:20:16Z", "ms": 350997615873.6609 }, "end": { "local": "1981-02-14T06:20:16-05:00", "utc": "1981-02-14T11:20:16Z", "ms": 350997615873.6609 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-02-15", "window": { "start": { "local": "1981-02-15T06:20:08-05:00", "utc": "1981-02-15T11:20:08Z", "ms": 351084008202.4517 }, "end": { "local": "1981-02-15T06:20:08-05:00", "utc": "1981-02-15T11:20:08Z", "ms": 351084008202.4517 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:26 on Fri 13 Feb to 19:12 on Sat 14 Feb.", "fact": "1981-02-14T01:26:28Z → 1981-02-15T00:12:12Z" }, { "step": "kaala", "text": "Sunrise is at 06:20 on the 14th and 06:20 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not 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 35628 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Cali, 1981: Saturday 14 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": "1981-02-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-14", "confidence": "determinate" } ], "quote": "In Cali, Jayā Ekādaśī 1981 falls on Saturday 14 February. Ekādaśī runs from 20:26 on Fri 13 Feb to 19:12 on Sat 14 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-02-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20043, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-02-14T19:12:12-05:00", "utc": "1981-02-15T00:12:12Z", "ms": 351043931757.07263 }, "end": { "local": "1981-02-15T18:18:20-05:00", "utc": "1981-02-15T23:18:20Z", "ms": 351127100008.5359 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-14T19:12:12-05:00", "utc": "1981-02-15T00:12:12Z", "ms": 351043931757.07263 }, "end": { "local": "1981-02-15T18:18:20-05:00", "utc": "1981-02-15T23:18:20Z", "ms": 351127100008.5359 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-02-14", "window": { "start": { "local": "1981-02-14T11:56:19-05:00", "utc": "1981-02-14T16:56:19Z", "ms": 351017779437.42017 }, "end": { "local": "1981-02-14T12:44:19-05:00", "utc": "1981-02-14T17:44:19Z", "ms": 351020659437.42017 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-02-15", "window": { "start": { "local": "1981-02-15T11:56:17-05:00", "utc": "1981-02-15T16:56:17Z", "ms": 351104176508.8898 }, "end": { "local": "1981-02-15T12:44:17-05:00", "utc": "1981-02-15T17:44:17Z", "ms": 351107056508.8898 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 19:12 on Sat 14 Feb to 18:18 on Sun 15 Feb.", "fact": "1981-02-15T00:12:12Z → 1981-02-15T23:18:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 14th, 11:56–12:44 on the 15th.", "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 14th and 48 of 48 on the 15th.", "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 20043 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Cali, 1981: Sunday 15 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": "1981-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-15", "confidence": "determinate" } ], "quote": "In Cali, Bhīṣma Dvādaśī 1981 falls on Sunday 15 February. Dvādaśī runs from 19:12 on Sat 14 Feb to 18:18 on Sun 15 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-02-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-15", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 125, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-02-15T18:18:20-05:00", "utc": "1981-02-15T23:18:20Z", "ms": 351127100008.5359 }, "end": { "local": "1981-02-16T17:46:44-05:00", "utc": "1981-02-16T22:46:44Z", "ms": 351211604178.06757 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-15T18:18:20-05:00", "utc": "1981-02-15T23:18:20Z", "ms": 351127100008.5359 }, "end": { "local": "1981-02-16T17:46:44-05:00", "utc": "1981-02-16T22:46:44Z", "ms": 351211604178.06757 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-02-15", "window": { "start": { "local": "1981-02-15T18:20:25-05:00", "utc": "1981-02-15T23:20:25Z", "ms": 351127224815.3279 }, "end": { "local": "1981-02-15T19:56:21-05:00", "utc": "1981-02-16T00:56:21Z", "ms": 351132981473.8774 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-02-16", "window": { "start": { "local": "1981-02-16T18:20:26-05:00", "utc": "1981-02-16T23:20:26Z", "ms": 351213625943.43964 }, "end": { "local": "1981-02-16T19:56:21-05:00", "utc": "1981-02-17T00:56:21Z", "ms": 351219381223.93164 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:18 on Sun 15 Feb to 17:47 on Mon 16 Feb.", "fact": "1981-02-15T23:18:20Z → 1981-02-16T22:46:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:20–19:56 on the 15th, 18:20–19:56 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 96 of 96 minutes on the 15th and 0 of 96 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 125 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Sunday 15 February.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-02-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-15", "confidence": "boundary" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Sunday 15 February. Trayodaśī runs from 18:18 on Sun 15 Feb to 17:47 on Mon 16 Feb and covers all of pradoṣa that evening. It is 2 min 05 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-02-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17714, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-02-17T17:39:23-05:00", "utc": "1981-02-17T22:39:23Z", "ms": 351297562928.61835 }, "end": { "local": "1981-02-18T17:58:14-05:00", "utc": "1981-02-18T22:58:14Z", "ms": 351385093864.15186 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1981-02-17T17:39:23-05:00", "utc": "1981-02-17T22:39:23Z", "ms": 351297562928.61835 }, "end": { "local": "1981-02-18T17:58:14-05:00", "utc": "1981-02-18T22:58:14Z", "ms": 351385093864.15186 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-02-17", "window": { "start": { "local": "1981-02-17T11:56:08-05:00", "utc": "1981-02-17T16:56:08Z", "ms": 351276968473.885 }, "end": { "local": "1981-02-17T12:44:08-05:00", "utc": "1981-02-17T17:44:08Z", "ms": 351279848473.885 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-02-18", "window": { "start": { "local": "1981-02-18T11:56:03-05:00", "utc": "1981-02-18T16:56:03Z", "ms": 351363363400.77783 }, "end": { "local": "1981-02-18T12:44:03-05:00", "utc": "1981-02-18T17:44:03Z", "ms": 351366243400.77783 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:39 on Tue 17 Feb to 17:58 on Wed 18 Feb.", "fact": "1981-02-17T22:39:23Z → 1981-02-18T22:58:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 17th, 11:56–12:44 on the 18th.", "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 17th and 48 of 48 on the 18th.", "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 17714 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Cali, 1981: Wednesday 18 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": "1981-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-18", "confidence": "determinate" } ], "quote": "In Cali, Māghī Pūrṇimā 1981 falls on Wednesday 18 February. Pūrṇimā runs from 17:39 on Tue 17 Feb to 17:58 on Wed 18 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-02-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-02-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3761, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-02-21T21:42:16-05:00", "utc": "1981-02-22T02:42:16Z", "ms": 351657736306.9456 }, "end": { "local": "1981-02-22T23:48:21-05:00", "utc": "1981-02-23T04:48:21Z", "ms": 351751701193.31195 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-02-21T21:42:16-05:00", "utc": "1981-02-22T02:42:16Z", "ms": 351657736306.9456 }, "end": { "local": "1981-02-22T23:48:21-05:00", "utc": "1981-02-23T04:48:21Z", "ms": 351751701193.31195 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-02-21", "window": { "start": { "local": "1981-02-21T20:39:35-05:00", "utc": "1981-02-22T01:39:35Z", "ms": 351653975108.73224 }, "end": { "local": "1981-02-21T20:39:35-05:00", "utc": "1981-02-22T01:39:35Z", "ms": 351653975108.73224 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-02-22", "window": { "start": { "local": "1981-02-22T21:23:01-05:00", "utc": "1981-02-23T02:23:01Z", "ms": 351742980949.19147 }, "end": { "local": "1981-02-22T21:23:01-05:00", "utc": "1981-02-23T02:23:01Z", "ms": 351742980949.19147 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:42 on Sat 21 Feb to 23:48 on Sun 22 Feb.", "fact": "1981-02-22T02:42:16Z → 1981-02-23T04:48:21Z" }, { "step": "kaala", "text": "Moonrise is at 20:40 on the 21st and 21:23 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is on the 22nd.", "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 3761 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Sunday 22 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": "1981-02-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-02-22", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Sunday 22 February. Caturthī runs from 21:42 on Sat 21 Feb to 23:48 on Sun 22 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-02-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-03-02", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19867, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-03-01T11:48:15-05:00", "utc": "1981-03-01T16:48:15Z", "ms": 352313295094.4754 }, "end": { "local": "1981-03-02T11:59:27-05:00", "utc": "1981-03-02T16:59:27Z", "ms": 352400367270.84766 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-01T11:48:15-05:00", "utc": "1981-03-01T16:48:15Z", "ms": 352313295094.4754 }, "end": { "local": "1981-03-02T11:59:27-05:00", "utc": "1981-03-02T16:59:27Z", "ms": 352400367270.84766 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-03-01", "window": { "start": { "local": "1981-03-01T06:17:08-05:00", "utc": "1981-03-01T11:17:08Z", "ms": 352293427729.39343 }, "end": { "local": "1981-03-01T06:17:08-05:00", "utc": "1981-03-01T11:17:08Z", "ms": 352293427729.39343 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-03-02", "window": { "start": { "local": "1981-03-02T06:16:50-05:00", "utc": "1981-03-02T11:16:50Z", "ms": 352379810379.88416 }, "end": { "local": "1981-03-02T06:16:50-05:00", "utc": "1981-03-02T11:16:50Z", "ms": 352379810379.88416 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:48 on Sun 1 Mar to 11:59 on Mon 2 Mar.", "fact": "1981-03-01T16:48:15Z → 1981-03-02T16:59:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:17 on the 1st and 06:17 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 1st and is 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 19867 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Cali, 1981: Monday 2 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": "1981-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-02", "confidence": "determinate" } ], "quote": "In Cali, Vijayā Ekādaśī 1981 falls on Monday 2 March. Ekādaśī runs from 11:48 on Sun 1 Mar to 11:59 on Mon 2 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-03-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-03-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24960, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-03-03T11:23:32-05:00", "utc": "1981-03-03T16:23:32Z", "ms": 352484612003.8966 }, "end": { "local": "1981-03-04T10:02:51-05:00", "utc": "1981-03-04T15:02:51Z", "ms": 352566170737.61273 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-03T11:23:32-05:00", "utc": "1981-03-03T16:23:32Z", "ms": 352484612003.8966 }, "end": { "local": "1981-03-04T10:02:51-05:00", "utc": "1981-03-04T15:02:51Z", "ms": 352566170737.61273 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-03-03", "window": { "start": { "local": "1981-03-03T18:19:32-05:00", "utc": "1981-03-03T23:19:32Z", "ms": 352509571630.407 }, "end": { "local": "1981-03-03T19:55:05-05:00", "utc": "1981-03-04T00:55:05Z", "ms": 352515305307.9445 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-03-04", "window": { "start": { "local": "1981-03-04T18:19:24-05:00", "utc": "1981-03-04T23:19:24Z", "ms": 352595964009.4025 }, "end": { "local": "1981-03-04T19:54:56-05:00", "utc": "1981-03-05T00:54:56Z", "ms": 352601696198.42334 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:24 on Tue 3 Mar to 10:03 on Wed 4 Mar.", "fact": "1981-03-03T16:23:32Z → 1981-03-04T15:02:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:20–19:55 on the 3rd, 18:19–19:55 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 96 of 96 minutes on the 3rd and 0 of 96 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 24960 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Tuesday 3 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": "1981-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-03", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Tuesday 3 March. Trayodaśī runs from 11:24 on Tue 3 Mar to 10:03 on Wed 4 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-03-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26468, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-03-04T10:02:51-05:00", "utc": "1981-03-04T15:02:51Z", "ms": 352566170737.61273 }, "end": { "local": "1981-03-05T08:02:48-05:00", "utc": "1981-03-05T13:02:48Z", "ms": 352645368207.2175 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-04T10:02:51-05:00", "utc": "1981-03-04T15:02:51Z", "ms": 352566170737.61273 }, "end": { "local": "1981-03-05T08:02:48-05:00", "utc": "1981-03-05T13:02:48Z", "ms": 352645368207.2175 } }, "kaala": "nishita", "days": [ { "local_date": "1981-03-03", "window": { "start": { "local": "1981-03-03T23:53:53-05:00", "utc": "1981-03-04T04:53:53Z", "ms": 352529632921.1727 }, "end": { "local": "1981-03-04T00:41:53-05:00", "utc": "1981-03-04T05:41:53Z", "ms": 352532512921.1727 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-03-04", "window": { "start": { "local": "1981-03-04T23:53:40-05:00", "utc": "1981-03-05T04:53:40Z", "ms": 352616019718.23065 }, "end": { "local": "1981-03-05T00:41:40-05:00", "utc": "1981-03-05T05:41:40Z", "ms": 352618899718.23065 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:03 on Wed 4 Mar to 08:03 on Thu 5 Mar.", "fact": "1981-03-04T15:02:51Z → 1981-03-05T13:02:48Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:54–00:42 on the 3rd, 23:54–00:42 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "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 26468 s" }, { "step": "ruling", "text": "Mahāśivarātri, Cali, 1981: Wednesday 4 March.", "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": "1981-03-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-04", "confidence": "determinate" } ], "quote": "In Cali, Mahāśivarātri 1981 falls on Wednesday 4 March. Caturdaśī runs from 10:03 on Wed 4 Mar to 08:03 on Thu 5 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-03-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16189, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-03-08T20:16:36-05:00", "utc": "1981-03-09T01:16:36Z", "ms": 352948596335.34644 }, "end": { "local": "1981-03-09T17:10:27-05:00", "utc": "1981-03-09T22:10:27Z", "ms": 353023826941.47766 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-08T20:16:36-05:00", "utc": "1981-03-09T01:16:36Z", "ms": 352948596335.34644 }, "end": { "local": "1981-03-09T17:10:27-05:00", "utc": "1981-03-09T22:10:27Z", "ms": 353023826941.47766 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-03-08", "window": { "start": { "local": "1981-03-08T11:52:53-05:00", "utc": "1981-03-08T16:52:53Z", "ms": 352918372998.53674 }, "end": { "local": "1981-03-08T12:40:53-05:00", "utc": "1981-03-08T17:40:53Z", "ms": 352921252998.53674 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-03-09", "window": { "start": { "local": "1981-03-09T11:52:38-05:00", "utc": "1981-03-09T16:52:38Z", "ms": 353004757987.876 }, "end": { "local": "1981-03-09T12:40:38-05:00", "utc": "1981-03-09T17:40:38Z", "ms": 353007637987.876 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:17 on Sun 8 Mar to 17:10 on Mon 9 Mar.", "fact": "1981-03-09T01:16:36Z → 1981-03-09T22:10:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 8th, 11:53–12:41 on the 9th.", "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 8th and 48 of 48 on the 9th.", "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 16189 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Monday 9 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": "1981-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-09", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Monday 9 March. Caturthī runs from 20:17 on Sun 8 Mar to 17:10 on Mon 9 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-03-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-03-16", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 914, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-03-15T06:30:31-05:00", "utc": "1981-03-15T11:30:31Z", "ms": 353503830509.8775 }, "end": { "local": "1981-03-16T06:27:17-05:00", "utc": "1981-03-16T11:27:17Z", "ms": 353590037378.9197 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-15T06:30:31-05:00", "utc": "1981-03-15T11:30:31Z", "ms": 353503830509.8775 }, "end": { "local": "1981-03-16T06:27:17-05:00", "utc": "1981-03-16T11:27:17Z", "ms": 353590037378.9197 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-03-15", "window": { "start": { "local": "1981-03-15T06:12:26-05:00", "utc": "1981-03-15T11:12:26Z", "ms": 353502745788.7072 }, "end": { "local": "1981-03-15T06:12:26-05:00", "utc": "1981-03-15T11:12:26Z", "ms": 353502745788.7072 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-03-16", "window": { "start": { "local": "1981-03-16T06:12:03-05:00", "utc": "1981-03-16T11:12:03Z", "ms": 353589123061.2039 }, "end": { "local": "1981-03-16T06:12:03-05:00", "utc": "1981-03-16T11:12:03Z", "ms": 353589123061.2039 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:31 on Sun 15 Mar to 06:27 on Mon 16 Mar.", "fact": "1981-03-15T11:30:31Z → 1981-03-16T11:27:17Z" }, { "step": "kaala", "text": "Sunrise is at 06:12 on the 15th and 06:12 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 914 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Cali, 1981: Monday 16 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": "1981-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-16", "confidence": "determinate" } ], "quote": "In Cali, Āmalakī Ekādaśī 1981 falls on Monday 16 March. Ekādaśī runs from 06:31 on Sun 15 Mar to 06:27 on Mon 16 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-03-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-03-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38243, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-03-17T06:51:09-05:00", "utc": "1981-03-17T11:51:09Z", "ms": 353677868726.4933 }, "end": { "local": "1981-03-18T07:39:38-05:00", "utc": "1981-03-18T12:39:38Z", "ms": 353767178202.21246 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-17T06:51:09-05:00", "utc": "1981-03-17T11:51:09Z", "ms": 353677868726.4933 }, "end": { "local": "1981-03-18T07:39:38-05:00", "utc": "1981-03-18T12:39:38Z", "ms": 353767178202.21246 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-03-17", "window": { "start": { "local": "1981-03-17T18:17:13-05:00", "utc": "1981-03-17T23:17:13Z", "ms": 353719032854.7727 }, "end": { "local": "1981-03-17T19:52:25-05:00", "utc": "1981-03-18T00:52:25Z", "ms": 353724745398.6547 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1981-03-18", "window": { "start": { "local": "1981-03-18T18:17:01-05:00", "utc": "1981-03-18T23:17:01Z", "ms": 353805420923.2687 }, "end": { "local": "1981-03-18T19:52:12-05:00", "utc": "1981-03-19T00:52:12Z", "ms": 353811131944.57355 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:51 on Tue 17 Mar to 07:40 on Wed 18 Mar.", "fact": "1981-03-17T11:51:09Z → 1981-03-18T12:39:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:17–19:52 on the 17th, 18:17–19:52 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 95 of 95 minutes on the 17th and 0 of 95 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 38243 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Tuesday 17 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": "1981-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-17", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Tuesday 17 March. Trayodaśī runs from 06:51 on Tue 17 Mar to 07:40 on Wed 18 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-03-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19735, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-03-19T08:50:39-05:00", "utc": "1981-03-19T13:50:39Z", "ms": 353857838979.0593 }, "end": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-19T08:50:39-05:00", "utc": "1981-03-19T13:50:39Z", "ms": 353857838979.0593 }, "end": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 } }, "kaala": "sayahna", "days": [ { "local_date": "1981-03-19", "window": { "start": { "local": "1981-03-19T15:51:38-05:00", "utc": "1981-03-19T20:51:38Z", "ms": 353883097784.70764 }, "end": { "local": "1981-03-19T18:16:49-05:00", "utc": "1981-03-19T23:16:49Z", "ms": 353891808835.1207 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1981-03-20", "window": { "start": { "local": "1981-03-20T15:51:23-05:00", "utc": "1981-03-20T20:51:23Z", "ms": 353969483305.4272 }, "end": { "local": "1981-03-20T18:16:37-05:00", "utc": "1981-03-20T23:16:37Z", "ms": 353978196613.3523 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:51 on Thu 19 Mar to 10:22 on Fri 20 Mar.", "fact": "1981-03-19T13:50:39Z → 1981-03-20T15:22:28Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:52–18:17 on the 19th, 15:51–18:17 on the 20th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 19th and 0 of 145 on the 20th.", "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 19735 s" }, { "step": "ruling", "text": "Holikā Dahana, Cali, 1981: Thursday 19 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": "1981-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-19", "confidence": "determinate" } ], "quote": "In Cali, Holikā Dahana 1981 falls on Thursday 19 March. Pūrṇimā runs from 08:51 on Thu 19 Mar to 10:22 on Fri 20 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19735, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-03-19T08:50:39-05:00", "utc": "1981-03-19T13:50:39Z", "ms": 353857838979.0593 }, "end": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1981-03-19T08:50:39-05:00", "utc": "1981-03-19T13:50:39Z", "ms": 353857838979.0593 }, "end": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 } }, "kaala": "sayahna", "days": [ { "local_date": "1981-03-19", "window": { "start": { "local": "1981-03-19T15:51:38-05:00", "utc": "1981-03-19T20:51:38Z", "ms": 353883097784.70764 }, "end": { "local": "1981-03-19T18:16:49-05:00", "utc": "1981-03-19T23:16:49Z", "ms": 353891808835.1207 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1981-03-20", "window": { "start": { "local": "1981-03-20T15:51:23-05:00", "utc": "1981-03-20T20:51:23Z", "ms": 353969483305.4272 }, "end": { "local": "1981-03-20T18:16:37-05:00", "utc": "1981-03-20T23:16:37Z", "ms": 353978196613.3523 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1981-03-19", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:51 on Thu 19 Mar to 10:22 on Fri 20 Mar.", "fact": "1981-03-19T13:50:39Z → 1981-03-20T15:22:28Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:52–18:17 on the 19th, 15:51–18:17 on the 20th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 19th and 0 of 145 on the 20th.", "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 19735 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 19 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Cali, 1981: Friday 20 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": "1981-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-20", "confidence": "determinate" } ], "quote": "In Cali, Holī 1981 falls on Friday 20 March. It is kept the day after Holikā Dahana, which falls on Thursday 19 March. Pūrṇimā runs from 08:51 on Thu 19 Mar to 10:22 on Fri 20 Mar and covers all of sāyāhna on the 19th.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15118, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 }, "end": { "local": "1981-03-21T12:13:27-05:00", "utc": "1981-03-21T17:13:27Z", "ms": 354042806818.16345 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-03-20T10:22:28-05:00", "utc": "1981-03-20T15:22:28Z", "ms": 353949747999.98016 }, "end": { "local": "1981-03-21T12:13:27-05:00", "utc": "1981-03-21T17:13:27Z", "ms": 354042806818.16345 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-03-20", "window": { "start": { "local": "1981-03-20T06:10:30-05:00", "utc": "1981-03-20T11:10:30Z", "ms": 353934630073.7268 }, "end": { "local": "1981-03-20T06:10:30-05:00", "utc": "1981-03-20T11:10:30Z", "ms": 353934630073.7268 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-03-21", "window": { "start": { "local": "1981-03-21T06:10:06-05:00", "utc": "1981-03-21T11:10:06Z", "ms": 354021006430.32465 }, "end": { "local": "1981-03-21T06:10:06-05:00", "utc": "1981-03-21T11:10:06Z", "ms": 354021006430.32465 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 10:22 on Fri 20 Mar to 12:13 on Sat 21 Mar.", "fact": "1981-03-20T15:22:28Z → 1981-03-21T17:13:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:11 on the 20th and 06:10 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15118 s" }, { "step": "ruling", "text": "Vasantotsava, Cali, 1981: Saturday 21 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": "1981-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-21", "confidence": "determinate" } ], "quote": "In Cali, Vasantotsava 1981 falls on Saturday 21 March. Pratipadā runs from 10:22 on Fri 20 Mar to 12:13 on Sat 21 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-03-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8333, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-03-23T16:42:38-05:00", "utc": "1981-03-23T21:42:38Z", "ms": 354231758106.3136 }, "end": { "local": "1981-03-24T19:11:27-05:00", "utc": "1981-03-25T00:11:27Z", "ms": 354327086796.3051 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-03-23T16:42:38-05:00", "utc": "1981-03-23T21:42:38Z", "ms": 354231758106.3136 }, "end": { "local": "1981-03-24T19:11:27-05:00", "utc": "1981-03-25T00:11:27Z", "ms": 354327086796.3051 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-03-23", "window": { "start": { "local": "1981-03-23T20:45:44-05:00", "utc": "1981-03-24T01:45:44Z", "ms": 354246344286.3869 }, "end": { "local": "1981-03-23T20:45:44-05:00", "utc": "1981-03-24T01:45:44Z", "ms": 354246344286.3869 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-03-24", "window": { "start": { "local": "1981-03-24T21:30:20-05:00", "utc": "1981-03-25T02:30:20Z", "ms": 354335419912.96204 }, "end": { "local": "1981-03-24T21:30:20-05:00", "utc": "1981-03-25T02:30:20Z", "ms": 354335419912.96204 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:43 on Mon 23 Mar to 19:11 on Tue 24 Mar.", "fact": "1981-03-23T21:42:38Z → 1981-03-25T00:11:27Z" }, { "step": "kaala", "text": "Moonrise is at 20:46 on the 23rd and 21:30 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8333 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Monday 23 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": "1981-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-23", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Monday 23 March. Caturthī runs from 16:43 on Mon 23 Mar to 19:11 on Tue 24 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-03-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31097, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-03-28T01:49:37-05:00", "utc": "1981-03-28T06:49:37Z", "ms": 354610177460.78845 }, "end": { "local": "1981-03-29T03:08:33-05:00", "utc": "1981-03-29T08:08:33Z", "ms": 354701313181.9542 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-03-28T01:49:37-05:00", "utc": "1981-03-28T06:49:37Z", "ms": 354610177460.78845 }, "end": { "local": "1981-03-29T03:08:33-05:00", "utc": "1981-03-29T08:08:33Z", "ms": 354701313181.9542 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-03-28", "window": { "start": { "local": "1981-03-28T11:47:08-05:00", "utc": "1981-03-28T16:47:08Z", "ms": 354646027950.4598 }, "end": { "local": "1981-03-28T12:35:08-05:00", "utc": "1981-03-28T17:35:08Z", "ms": 354648907950.4598 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-03-29", "window": { "start": { "local": "1981-03-29T11:46:50-05:00", "utc": "1981-03-29T16:46:50Z", "ms": 354732409800.85876 }, "end": { "local": "1981-03-29T12:34:50-05:00", "utc": "1981-03-29T17:34:50Z", "ms": 354735289800.85876 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:50 on Sat 28 Mar to 03:09 on Sun 29 Mar.", "fact": "1981-03-28T06:49:37Z → 1981-03-29T08:08:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 28th, 11:47–12:35 on the 29th.", "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 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31097 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Cali, 1981: Saturday 28 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": "1981-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-28", "confidence": "determinate" } ], "quote": "In Cali, Śītalāṣṭamī 1981 falls on Saturday 28 March. Aṣṭamī runs from 01:50 on Sat 28 Mar to 03:09 on Sun 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-03-31", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9380, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-03-31T03:29:48-05:00", "utc": "1981-03-31T08:29:48Z", "ms": 354875388241.33105 }, "end": { "local": "1981-04-01T02:25:13-05:00", "utc": "1981-04-01T07:25:13Z", "ms": 354957913396.8219 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-03-31T03:29:48-05:00", "utc": "1981-03-31T08:29:48Z", "ms": 354875388241.33105 }, "end": { "local": "1981-04-01T02:25:13-05:00", "utc": "1981-04-01T07:25:13Z", "ms": 354957913396.8219 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-03-31", "window": { "start": { "local": "1981-03-31T06:06:08-05:00", "utc": "1981-03-31T11:06:08Z", "ms": 354884767836.74896 }, "end": { "local": "1981-03-31T06:06:08-05:00", "utc": "1981-03-31T11:06:08Z", "ms": 354884767836.74896 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-04-01", "window": { "start": { "local": "1981-04-01T06:05:44-05:00", "utc": "1981-04-01T11:05:44Z", "ms": 354971144249.78064 }, "end": { "local": "1981-04-01T06:05:44-05:00", "utc": "1981-04-01T11:05:44Z", "ms": 354971144249.78064 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:30 on Tue 31 Mar to 02:25 on Wed 1 Apr.", "fact": "1981-03-31T08:29:48Z → 1981-04-01T07:25:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 31st and 06:06 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 31st and is not 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 9380 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Cali, 1981: Tuesday 31 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": "1981-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-03-31", "confidence": "determinate" } ], "quote": "In Cali, Pāpamocanī Ekādaśī 1981 falls on Tuesday 31 March. Ekādaśī runs from 03:30 on Tue 31 Mar to 02:25 on Wed 1 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-04-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7776, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-04-02T00:32:43-05:00", "utc": "1981-04-02T05:32:43Z", "ms": 355037563482.32886 }, "end": { "local": "1981-04-02T21:58:20-05:00", "utc": "1981-04-03T02:58:20Z", "ms": 355114699891.5753 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-02T00:32:43-05:00", "utc": "1981-04-02T05:32:43Z", "ms": 355037563482.32886 }, "end": { "local": "1981-04-02T21:58:20-05:00", "utc": "1981-04-03T02:58:20Z", "ms": 355114699891.5753 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-04-01", "window": { "start": { "local": "1981-04-01T18:14:08-05:00", "utc": "1981-04-01T23:14:08Z", "ms": 355014847501.6507 }, "end": { "local": "1981-04-01T19:48:57-05:00", "utc": "1981-04-02T00:48:57Z", "ms": 355020537273.7988 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1981-04-02", "window": { "start": { "local": "1981-04-02T18:13:55-05:00", "utc": "1981-04-02T23:13:55Z", "ms": 355101235477.01184 }, "end": { "local": "1981-04-02T19:48:44-05:00", "utc": "1981-04-03T00:48:44Z", "ms": 355106923744.4315 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:33 on Thu 2 Apr to 21:58 on Thu 2 Apr.", "fact": "1981-04-02T05:32:43Z → 1981-04-03T02:58:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:14–19:49 on the 1st, 18:14–19:49 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 1st and 95 of 95 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7776 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Thursday 2 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": "1981-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-02", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Thursday 2 April. Trayodaśī runs from 00:33 on Thu 2 Apr to 21:58 on Thu 2 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-04-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-04-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6427, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-04-02T21:58:20-05:00", "utc": "1981-04-03T02:58:20Z", "ms": 355114699891.5753 }, "end": { "local": "1981-04-03T18:50:32-05:00", "utc": "1981-04-03T23:50:32Z", "ms": 355189832140.00006 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-02T21:58:20-05:00", "utc": "1981-04-03T02:58:20Z", "ms": 355114699891.5753 }, "end": { "local": "1981-04-03T18:50:32-05:00", "utc": "1981-04-03T23:50:32Z", "ms": 355189832140.00006 } }, "kaala": "nishita", "days": [ { "local_date": "1981-04-02", "window": { "start": { "local": "1981-04-02T23:45:26-05:00", "utc": "1981-04-03T04:45:26Z", "ms": 355121126479.8357 }, "end": { "local": "1981-04-03T00:33:26-05:00", "utc": "1981-04-03T05:33:26Z", "ms": 355124006479.8357 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-04-03", "window": { "start": { "local": "1981-04-03T23:45:09-05:00", "utc": "1981-04-04T04:45:09Z", "ms": 355207508964.4659 }, "end": { "local": "1981-04-04T00:33:09-05:00", "utc": "1981-04-04T05:33:09Z", "ms": 355210388964.4659 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:58 on Thu 2 Apr to 18:51 on Fri 3 Apr.", "fact": "1981-04-03T02:58:20Z → 1981-04-03T23:50:32Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 2nd, 23:45–00:33 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6427 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Thursday 2 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": "1981-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-02", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Thursday 2 April. Caturdaśī runs from 21:58 on Thu 2 Apr to 18:51 on Fri 3 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-04-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 525, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-04-04T15:19:26-05:00", "utc": "1981-04-04T20:19:26Z", "ms": 355263566231.01166 }, "end": { "local": "1981-04-05T11:36:01-05:00", "utc": "1981-04-05T16:36:01Z", "ms": 355336560631.19214 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-04T15:19:26-05:00", "utc": "1981-04-04T20:19:26Z", "ms": 355263566231.01166 }, "end": { "local": "1981-04-05T11:36:01-05:00", "utc": "1981-04-05T16:36:01Z", "ms": 355336560631.19214 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-04", "window": { "start": { "local": "1981-04-04T11:45:03-05:00", "utc": "1981-04-04T16:45:03Z", "ms": 355250703099.9037 }, "end": { "local": "1981-04-04T12:33:03-05:00", "utc": "1981-04-04T17:33:03Z", "ms": 355253583099.9037 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-05", "window": { "start": { "local": "1981-04-05T11:44:46-05:00", "utc": "1981-04-05T16:44:46Z", "ms": 355337085833.7965 }, "end": { "local": "1981-04-05T12:32:46-05:00", "utc": "1981-04-05T17:32:46Z", "ms": 355339965833.7965 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:19 on Sat 4 Apr to 11:36 on Sun 5 Apr.", "fact": "1981-04-04T20:19:26Z → 1981-04-05T16:36:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 4th, 11:45–12:33 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 525 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Cali, 1981: Sunday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-05", "confidence": "determinate" } ], "quote": "In Cali, Navarātrārambha (Caitra) (Chaitra Navratri) 1981 falls on Sunday 5 April. Pratipadā runs from 15:19 on Sat 4 Apr to 11:36 on Sun 5 Apr, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13979, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-04-06T07:51:30-05:00", "utc": "1981-04-06T12:51:30Z", "ms": 355409490112.8974 }, "end": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-06T07:51:30-05:00", "utc": "1981-04-06T12:51:30Z", "ms": 355409490112.8974 }, "end": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-06", "window": { "start": { "local": "1981-04-06T11:44:29-05:00", "utc": "1981-04-06T16:44:29Z", "ms": 355423468752.91583 }, "end": { "local": "1981-04-06T12:32:29-05:00", "utc": "1981-04-06T17:32:29Z", "ms": 355426348752.91583 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-04-07", "window": { "start": { "local": "1981-04-07T11:44:12-05:00", "utc": "1981-04-07T16:44:12Z", "ms": 355509851870.4241 }, "end": { "local": "1981-04-07T12:32:12-05:00", "utc": "1981-04-07T17:32:12Z", "ms": 355512731870.4241 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:52 on Mon 6 Apr to 04:17 on Tue 7 Apr.", "fact": "1981-04-06T12:51:30Z → 1981-04-07T09:16:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 6th, 11:44–12:32 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13979 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Cali, 1981: Monday 6 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-06", "confidence": "determinate" } ], "quote": "In Cali, Gaurī Tṛtīyā (Gangaur) 1981 falls on Monday 6 April. Tṛtīyā runs from 07:52 on Mon 6 Apr to 04:17 on Tue 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13979, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-04-06T07:51:30-05:00", "utc": "1981-04-06T12:51:30Z", "ms": 355409490112.8974 }, "end": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-06T07:51:30-05:00", "utc": "1981-04-06T12:51:30Z", "ms": 355409490112.8974 }, "end": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-06", "window": { "start": { "local": "1981-04-06T11:44:29-05:00", "utc": "1981-04-06T16:44:29Z", "ms": 355423468752.91583 }, "end": { "local": "1981-04-06T12:32:29-05:00", "utc": "1981-04-06T17:32:29Z", "ms": 355426348752.91583 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-04-07", "window": { "start": { "local": "1981-04-07T11:44:12-05:00", "utc": "1981-04-07T16:44:12Z", "ms": 355509851870.4241 }, "end": { "local": "1981-04-07T12:32:12-05:00", "utc": "1981-04-07T17:32:12Z", "ms": 355512731870.4241 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:52 on Mon 6 Apr to 04:17 on Tue 7 Apr.", "fact": "1981-04-06T12:51:30Z → 1981-04-07T09:16:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 6th, 11:44–12:32 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13979 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Cali, 1981: Monday 6 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-06", "confidence": "determinate" } ], "quote": "In Cali, Saubhāgya Śayana Vrata 1981 falls on Monday 6 April. Tṛtīyā runs from 07:52 on Mon 6 Apr to 04:17 on Tue 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-04-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26838, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 }, "end": { "local": "1981-04-08T01:02:27-05:00", "utc": "1981-04-08T06:02:27Z", "ms": 355557747224.876 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-07T04:16:54-05:00", "utc": "1981-04-07T09:16:54Z", "ms": 355483014351.7101 }, "end": { "local": "1981-04-08T01:02:27-05:00", "utc": "1981-04-08T06:02:27Z", "ms": 355557747224.876 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-07", "window": { "start": { "local": "1981-04-07T11:44:12-05:00", "utc": "1981-04-07T16:44:12Z", "ms": 355509851870.4241 }, "end": { "local": "1981-04-07T12:32:12-05:00", "utc": "1981-04-07T17:32:12Z", "ms": 355512731870.4241 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-04-08", "window": { "start": { "local": "1981-04-08T11:43:55-05:00", "utc": "1981-04-08T16:43:55Z", "ms": 355596235200.0156 }, "end": { "local": "1981-04-08T12:31:55-05:00", "utc": "1981-04-08T17:31:55Z", "ms": 355599115200.0156 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:17 on Tue 7 Apr to 01:02 on Wed 8 Apr.", "fact": "1981-04-07T09:16:54Z → 1981-04-08T06:02:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 7th, 11:44–12:32 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26838 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Tuesday 7 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": "1981-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-07", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Tuesday 7 April. Caturthī runs from 04:17 on Tue 7 Apr to 01:02 on Wed 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35109, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-04-08T01:02:27-05:00", "utc": "1981-04-08T06:02:27Z", "ms": 355557747224.876 }, "end": { "local": "1981-04-08T22:17:04-05:00", "utc": "1981-04-09T03:17:04Z", "ms": 355634223802.0378 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-08T01:02:27-05:00", "utc": "1981-04-08T06:02:27Z", "ms": 355557747224.876 }, "end": { "local": "1981-04-08T22:17:04-05:00", "utc": "1981-04-09T03:17:04Z", "ms": 355634223802.0378 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-07", "window": { "start": { "local": "1981-04-07T11:44:12-05:00", "utc": "1981-04-07T16:44:12Z", "ms": 355509851870.4241 }, "end": { "local": "1981-04-07T12:32:12-05:00", "utc": "1981-04-07T17:32:12Z", "ms": 355512731870.4241 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-08", "window": { "start": { "local": "1981-04-08T11:43:55-05:00", "utc": "1981-04-08T16:43:55Z", "ms": 355596235200.0156 }, "end": { "local": "1981-04-08T12:31:55-05:00", "utc": "1981-04-08T17:31:55Z", "ms": 355599115200.0156 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:02 on Wed 8 Apr to 22:17 on Wed 8 Apr.", "fact": "1981-04-08T06:02:27Z → 1981-04-09T03:17:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 7th, 11:44–12:32 on the 8th.", "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 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 35109 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Cali, 1981: Wednesday 8 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-08", "confidence": "determinate" } ], "quote": "In Cali, Lakṣmī Pañcamī 1981 falls on Wednesday 8 April. Pañcamī runs from 01:02 on Wed 8 Apr to 22:17 on Wed 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19291, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-04-10T18:39:03-05:00", "utc": "1981-04-10T23:39:03Z", "ms": 355793942644.5259 }, "end": { "local": "1981-04-11T17:52:37-05:00", "utc": "1981-04-11T22:52:37Z", "ms": 355877557146.43115 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-10T18:39:03-05:00", "utc": "1981-04-10T23:39:03Z", "ms": 355793942644.5259 }, "end": { "local": "1981-04-11T17:52:37-05:00", "utc": "1981-04-11T22:52:37Z", "ms": 355877557146.43115 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-10", "window": { "start": { "local": "1981-04-10T11:43:23-05:00", "utc": "1981-04-10T16:43:23Z", "ms": 355769002554.60394 }, "end": { "local": "1981-04-10T12:31:23-05:00", "utc": "1981-04-10T17:31:23Z", "ms": 355771882554.60394 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-11", "window": { "start": { "local": "1981-04-11T11:43:07-05:00", "utc": "1981-04-11T16:43:07Z", "ms": 355855386611.521 }, "end": { "local": "1981-04-11T12:31:07-05:00", "utc": "1981-04-11T17:31:07Z", "ms": 355858266611.521 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:39 on Fri 10 Apr to 17:53 on Sat 11 Apr.", "fact": "1981-04-10T23:39:03Z → 1981-04-11T22:52:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 10th, 11:43–12:31 on the 11th.", "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 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19291 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Cali, 1981: Saturday 11 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-11", "confidence": "determinate" } ], "quote": "In Cali, Bhavānī Utpatti 1981 falls on Saturday 11 April. Aṣṭamī runs from 18:39 on Fri 10 Apr to 17:53 on Sat 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18981, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1981-04-11T17:52:37-05:00", "utc": "1981-04-11T22:52:37Z", "ms": 355877557146.43115 }, "end": { "local": "1981-04-12T17:47:12-05:00", "utc": "1981-04-12T22:47:12Z", "ms": 355963632028.60504 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-11T17:52:37-05:00", "utc": "1981-04-11T22:52:37Z", "ms": 355877557146.43115 }, "end": { "local": "1981-04-12T17:47:12-05:00", "utc": "1981-04-12T22:47:12Z", "ms": 355963632028.60504 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-11", "window": { "start": { "local": "1981-04-11T11:43:07-05:00", "utc": "1981-04-11T16:43:07Z", "ms": 355855386611.521 }, "end": { "local": "1981-04-11T12:31:07-05:00", "utc": "1981-04-11T17:31:07Z", "ms": 355858266611.521 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-12", "window": { "start": { "local": "1981-04-12T11:42:51-05:00", "utc": "1981-04-12T16:42:51Z", "ms": 355941770944.1111 }, "end": { "local": "1981-04-12T12:30:51-05:00", "utc": "1981-04-12T17:30:51Z", "ms": 355944650944.1111 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 17:53 on Sat 11 Apr to 17:47 on Sun 12 Apr.", "fact": "1981-04-11T22:52:37Z → 1981-04-12T22:47:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 11th, 11:43–12:31 on the 12th.", "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 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18981 s" }, { "step": "ruling", "text": "Rāma Navamī, Cali, 1981: Sunday 12 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-12", "confidence": "determinate" } ], "quote": "In Cali, Rāma Navamī 1981 falls on Sunday 12 April. Navamī runs from 17:53 on Sat 11 Apr to 17:47 on Sun 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14275, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1981-04-13T09:59:11-05:00", "utc": "1981-04-13T14:59:11Z", "ms": 356021951172.8104 }, "end": { "local": "1981-05-14T06:56:40-05:00", "utc": "1981-05-14T11:56:40Z", "ms": 358689399806.40643 } }, "span": { "of": "transit", "start": { "local": "1981-04-13T09:59:11-05:00", "utc": "1981-04-13T14:59:11Z", "ms": 356021951172.8104 }, "end": { "local": "1981-04-13T09:59:11-05:00", "utc": "1981-04-13T14:59:11Z", "ms": 356021951172.8104 } }, "kaala": "day", "days": [ { "local_date": "1981-04-12", "window": { "start": { "local": "1981-04-12T06:01:37-05:00", "utc": "1981-04-12T11:01:37Z", "ms": 355921296804.017 }, "end": { "local": "1981-04-13T06:01:16-05:00", "utc": "1981-04-13T11:01:16Z", "ms": 356007675811.77313 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1981-04-13", "window": { "start": { "local": "1981-04-13T06:01:16-05:00", "utc": "1981-04-13T11:01:16Z", "ms": 356007675811.77313 }, "end": { "local": "1981-04-14T06:00:55-05:00", "utc": "1981-04-14T11:00:55Z", "ms": 356094055146.59644 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 09:59 on Mon 13 Apr.", "fact": "1981-04-13T14:59:11Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:02 on the 12th, and from 06:01 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 14275 s" }, { "step": "ruling", "text": "Vaiśākhī, Cali, 1981: Monday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1981-04-13", "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": "1981-04-13", "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 Cali, Vaiśākhī 1981 falls on Monday 13 April. The Sun enters Meṣa at 09:59 on Mon 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-04-14", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38286, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-04-13T18:18:59-05:00", "utc": "1981-04-13T23:18:59Z", "ms": 356051939030.2655 }, "end": { "local": "1981-04-14T19:22:28-05:00", "utc": "1981-04-15T00:22:28Z", "ms": 356142148387.1143 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-13T18:18:59-05:00", "utc": "1981-04-13T23:18:59Z", "ms": 356051939030.2655 }, "end": { "local": "1981-04-14T19:22:28-05:00", "utc": "1981-04-15T00:22:28Z", "ms": 356142148387.1143 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-04-14", "window": { "start": { "local": "1981-04-14T06:00:55-05:00", "utc": "1981-04-14T11:00:55Z", "ms": 356094055146.59644 }, "end": { "local": "1981-04-14T06:00:55-05:00", "utc": "1981-04-14T11:00:55Z", "ms": 356094055146.59644 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-04-15", "window": { "start": { "local": "1981-04-15T06:00:35-05:00", "utc": "1981-04-15T11:00:35Z", "ms": 356180434827.8092 }, "end": { "local": "1981-04-15T06:00:35-05:00", "utc": "1981-04-15T11:00:35Z", "ms": 356180434827.8092 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:19 on Mon 13 Apr to 19:22 on Tue 14 Apr.", "fact": "1981-04-13T23:18:59Z → 1981-04-15T00:22:28Z" }, { "step": "kaala", "text": "Sunrise is at 06:01 on the 14th and 06:01 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not 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 38286 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Cali, 1981: Tuesday 14 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": "1981-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-14", "confidence": "determinate" } ], "quote": "In Cali, Kāmadā Ekādaśī 1981 falls on Tuesday 14 April. Ekādaśī runs from 18:19 on Mon 13 Apr to 19:22 on Tue 14 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-04-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30087, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-04-15T20:51:33-05:00", "utc": "1981-04-16T01:51:33Z", "ms": 356233892714.3723 }, "end": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-15T20:51:33-05:00", "utc": "1981-04-16T01:51:33Z", "ms": 356233892714.3723 }, "end": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-15", "window": { "start": { "local": "1981-04-15T11:42:06-05:00", "utc": "1981-04-15T16:42:06Z", "ms": 356200925773.39075 }, "end": { "local": "1981-04-15T12:30:06-05:00", "utc": "1981-04-15T17:30:06Z", "ms": 356203805773.39075 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-16", "window": { "start": { "local": "1981-04-16T11:41:51-05:00", "utc": "1981-04-16T16:41:51Z", "ms": 356287311386.9338 }, "end": { "local": "1981-04-16T12:29:51-05:00", "utc": "1981-04-16T17:29:51Z", "ms": 356290191386.9338 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:52 on Wed 15 Apr to 22:40 on Thu 16 Apr.", "fact": "1981-04-16T01:51:33Z → 1981-04-17T03:40:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 15th, 11:42–12:30 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30087 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Cali, 1981: Thursday 16 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": "1981-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-16", "confidence": "determinate" } ], "quote": "In Cali, Anaṅga Trayodaśī 1981 falls on Thursday 16 April. Trayodaśī runs from 20:52 on Wed 15 Apr to 22:40 on Thu 16 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-04-16", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3927, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-04-15T20:51:33-05:00", "utc": "1981-04-16T01:51:33Z", "ms": 356233892714.3723 }, "end": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-15T20:51:33-05:00", "utc": "1981-04-16T01:51:33Z", "ms": 356233892714.3723 }, "end": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-04-15", "window": { "start": { "local": "1981-04-15T18:11:37-05:00", "utc": "1981-04-15T23:11:37Z", "ms": 356224296718.9722 }, "end": { "local": "1981-04-15T19:46:06-05:00", "utc": "1981-04-16T00:46:06Z", "ms": 356229965806.4088 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1981-04-16", "window": { "start": { "local": "1981-04-16T18:11:28-05:00", "utc": "1981-04-16T23:11:28Z", "ms": 356310687899.1207 }, "end": { "local": "1981-04-16T19:45:56-05:00", "utc": "1981-04-17T00:45:56Z", "ms": 356316355553.4556 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:52 on Wed 15 Apr to 22:40 on Thu 16 Apr.", "fact": "1981-04-16T01:51:33Z → 1981-04-17T03:40:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:46 on the 15th, 18:11–19:46 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 0 of 94 minutes on the 15th and 94 of 94 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 3927 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Thursday 16 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": "1981-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-16", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Thursday 16 April. Trayodaśī runs from 20:52 on Wed 15 Apr to 22:40 on Thu 16 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-04-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36633, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 }, "end": { "local": "1981-04-18T00:44:11-05:00", "utc": "1981-04-18T05:44:11Z", "ms": 356420651273.18164 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-16T22:40:25-05:00", "utc": "1981-04-17T03:40:25Z", "ms": 356326824734.34015 }, "end": { "local": "1981-04-18T00:44:11-05:00", "utc": "1981-04-18T05:44:11Z", "ms": 356420651273.18164 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-16", "window": { "start": { "local": "1981-04-16T11:41:51-05:00", "utc": "1981-04-16T16:41:51Z", "ms": 356287311386.9338 }, "end": { "local": "1981-04-16T12:29:51-05:00", "utc": "1981-04-16T17:29:51Z", "ms": 356290191386.9338 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-04-17", "window": { "start": { "local": "1981-04-17T11:41:37-05:00", "utc": "1981-04-17T16:41:37Z", "ms": 356373697365.5457 }, "end": { "local": "1981-04-17T12:29:37-05:00", "utc": "1981-04-17T17:29:37Z", "ms": 356376577365.5457 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:40 on Thu 16 Apr to 00:44 on Sat 18 Apr.", "fact": "1981-04-17T03:40:25Z → 1981-04-18T05:44:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 16th, 11:42–12:30 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36633 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Cali, 1981: Friday 17 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": "1981-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-17", "confidence": "determinate" } ], "quote": "In Cali, Viṣṇudamanaka Caturdaśī 1981 falls on Friday 17 April. Caturdaśī runs from 22:40 on Thu 16 Apr to 00:44 on Sat 18 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31335, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-04-18T00:44:11-05:00", "utc": "1981-04-18T05:44:11Z", "ms": 356420651273.18164 }, "end": { "local": "1981-04-19T02:58:55-05:00", "utc": "1981-04-19T07:58:55Z", "ms": 356515135072.7287 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1981-04-18T00:44:11-05:00", "utc": "1981-04-18T05:44:11Z", "ms": 356420651273.18164 }, "end": { "local": "1981-04-19T02:58:55-05:00", "utc": "1981-04-19T07:58:55Z", "ms": 356515135072.7287 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-04-18", "window": { "start": { "local": "1981-04-18T11:41:24-05:00", "utc": "1981-04-18T16:41:24Z", "ms": 356460083726.798 }, "end": { "local": "1981-04-18T12:29:24-05:00", "utc": "1981-04-18T17:29:24Z", "ms": 356462963726.798 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-04-19", "window": { "start": { "local": "1981-04-19T11:41:10-05:00", "utc": "1981-04-19T16:41:10Z", "ms": 356546470487.8922 }, "end": { "local": "1981-04-19T12:29:10-05:00", "utc": "1981-04-19T17:29:10Z", "ms": 356549350487.8922 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:44 on Sat 18 Apr to 02:59 on Sun 19 Apr.", "fact": "1981-04-18T05:44:11Z → 1981-04-19T07:58:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 18th, 11:41–12:29 on the 19th.", "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 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31335 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Cali, 1981: Saturday 18 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": "1981-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-18", "confidence": "determinate" } ], "quote": "In Cali, Caitrī Pūrṇimā 1981 falls on Saturday 18 April. Pūrṇimā runs from 00:44 on Sat 18 Apr to 02:59 on Sun 19 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-04-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33600, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-04-22T10:11:32-05:00", "utc": "1981-04-22T15:11:32Z", "ms": 356800292237.0658 }, "end": { "local": "1981-04-23T12:28:08-05:00", "utc": "1981-04-23T17:28:08Z", "ms": 356894887726.6423 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-04-22T10:11:32-05:00", "utc": "1981-04-22T15:11:32Z", "ms": 356800292237.0658 }, "end": { "local": "1981-04-23T12:28:08-05:00", "utc": "1981-04-23T17:28:08Z", "ms": 356894887726.6423 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-04-22", "window": { "start": { "local": "1981-04-22T20:59:44-05:00", "utc": "1981-04-23T01:59:44Z", "ms": 356839184311.3121 }, "end": { "local": "1981-04-22T20:59:44-05:00", "utc": "1981-04-23T01:59:44Z", "ms": 356839184311.3121 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-04-23", "window": { "start": { "local": "1981-04-23T21:48:08-05:00", "utc": "1981-04-24T02:48:08Z", "ms": 356928487863.83795 }, "end": { "local": "1981-04-23T21:48:08-05:00", "utc": "1981-04-24T02:48:08Z", "ms": 356928487863.83795 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:12 on Wed 22 Apr to 12:28 on Thu 23 Apr.", "fact": "1981-04-22T15:11:32Z → 1981-04-23T17:28:08Z" }, { "step": "kaala", "text": "Moonrise is at 21:00 on the 22nd and 21:48 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33600 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Wednesday 22 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": "1981-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-22", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Wednesday 22 April. Caturthī runs from 10:12 on Wed 22 Apr to 12:28 on Thu 23 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-04-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-04-30", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26142, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-04-29T15:21:07-05:00", "utc": "1981-04-29T20:21:07Z", "ms": 357423667048.8556 }, "end": { "local": "1981-04-30T13:12:06-05:00", "utc": "1981-04-30T18:12:06Z", "ms": 357502326242.0843 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-04-29T15:21:07-05:00", "utc": "1981-04-29T20:21:07Z", "ms": 357423667048.8556 }, "end": { "local": "1981-04-30T13:12:06-05:00", "utc": "1981-04-30T18:12:06Z", "ms": 357502326242.0843 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-04-29", "window": { "start": { "local": "1981-04-29T05:56:37-05:00", "utc": "1981-04-29T10:56:37Z", "ms": 357389796953.4917 }, "end": { "local": "1981-04-29T05:56:37-05:00", "utc": "1981-04-29T10:56:37Z", "ms": 357389796953.4917 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-04-30", "window": { "start": { "local": "1981-04-30T05:56:24-05:00", "utc": "1981-04-30T10:56:24Z", "ms": 357476183924.25116 }, "end": { "local": "1981-04-30T05:56:24-05:00", "utc": "1981-04-30T10:56:24Z", "ms": 357476183924.25116 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:21 on Wed 29 Apr to 13:12 on Thu 30 Apr.", "fact": "1981-04-29T20:21:07Z → 1981-04-30T18:12:06Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 29th and 05:56 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26142 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Cali, 1981: Thursday 30 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": "1981-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-04-30", "confidence": "determinate" } ], "quote": "In Cali, Varūthinī Ekādaśī 1981 falls on Thursday 30 April. Ekādaśī runs from 15:21 on Wed 29 Apr to 13:12 on Thu 30 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-04-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-05-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28072, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-05-01T10:22:13-05:00", "utc": "1981-05-01T15:22:13Z", "ms": 357578533320.6456 }, "end": { "local": "1981-05-02T06:59:52-05:00", "utc": "1981-05-02T11:59:52Z", "ms": 357652791784.8772 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-01T10:22:13-05:00", "utc": "1981-05-01T15:22:13Z", "ms": 357578533320.6456 }, "end": { "local": "1981-05-02T06:59:52-05:00", "utc": "1981-05-02T11:59:52Z", "ms": 357652791784.8772 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-05-01", "window": { "start": { "local": "1981-05-01T18:10:05-05:00", "utc": "1981-05-01T23:10:05Z", "ms": 357606604934.1966 }, "end": { "local": "1981-05-01T19:44:12-05:00", "utc": "1981-05-02T00:44:12Z", "ms": 357612252229.6587 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-05-02", "window": { "start": { "local": "1981-05-02T18:10:03-05:00", "utc": "1981-05-02T23:10:03Z", "ms": 357693003184.8616 }, "end": { "local": "1981-05-02T19:44:09-05:00", "utc": "1981-05-03T00:44:09Z", "ms": 357698649215.7335 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:22 on Fri 1 May to 07:00 on Sat 2 May.", "fact": "1981-05-01T15:22:13Z → 1981-05-02T11:59:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:44 on the 1st, 18:10–19:44 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 1st and 0 of 94 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28072 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Friday 1 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": "1981-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-01", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Friday 1 May. Trayodaśī runs from 10:22 on Fri 1 May to 07:00 on Sat 2 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-05-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-05-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10092, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-05-02T06:59:52-05:00", "utc": "1981-05-02T11:59:52Z", "ms": 357652791784.8772 }, "end": { "local": "1981-05-03T03:15:08-05:00", "utc": "1981-05-03T08:15:08Z", "ms": 357725708258.6358 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-02T06:59:52-05:00", "utc": "1981-05-02T11:59:52Z", "ms": 357652791784.8772 }, "end": { "local": "1981-05-03T03:15:08-05:00", "utc": "1981-05-03T08:15:08Z", "ms": 357725708258.6358 } }, "kaala": "nishita", "days": [ { "local_date": "1981-05-01", "window": { "start": { "local": "1981-05-01T23:39:02-05:00", "utc": "1981-05-02T04:39:02Z", "ms": 357626342292.1794 }, "end": { "local": "1981-05-02T00:27:02-05:00", "utc": "1981-05-02T05:27:02Z", "ms": 357629222292.1794 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-05-02", "window": { "start": { "local": "1981-05-02T23:38:56-05:00", "utc": "1981-05-03T04:38:56Z", "ms": 357712735800.6315 }, "end": { "local": "1981-05-03T00:26:56-05:00", "utc": "1981-05-03T05:26:56Z", "ms": 357715615800.6315 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:00 on Sat 2 May to 03:15 on Sun 3 May.", "fact": "1981-05-02T11:59:52Z → 1981-05-03T08:15:08Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:39–00:27 on the 1st, 23:39–00:27 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10092 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Saturday 2 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": "1981-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-02", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Saturday 2 May. Caturdaśī runs from 07:00 on Sat 2 May to 03:15 on Sun 3 May and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9025, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-05-05T15:39:36-05:00", "utc": "1981-05-05T20:39:36Z", "ms": 357943176116.2125 }, "end": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-05T15:39:36-05:00", "utc": "1981-05-05T20:39:36Z", "ms": 357943176116.2125 }, "end": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-05-05", "window": { "start": { "local": "1981-05-05T18:10:01-05:00", "utc": "1981-05-05T23:10:01Z", "ms": 357952200947.8313 }, "end": { "local": "1981-05-05T19:44:03-05:00", "utc": "1981-05-06T00:44:03Z", "ms": 357957843269.63403 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-05-06", "window": { "start": { "local": "1981-05-06T18:10:01-05:00", "utc": "1981-05-06T23:10:01Z", "ms": 358038601197.16235 }, "end": { "local": "1981-05-06T19:44:02-05:00", "utc": "1981-05-07T00:44:02Z", "ms": 358044242312.5699 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:40 on Tue 5 May to 12:18 on Wed 6 May.", "fact": "1981-05-05T20:39:36Z → 1981-05-06T17:18:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:44 on the 5th, 18:10–19:44 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 94 of 94 minutes on the 5th and 0 of 94 on the 6th.", "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 9025 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Cali, 1981: Tuesday 5 May.", "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": "1981-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-05", "confidence": "determinate" } ], "quote": "In Cali, Paraśurāma Jayantī 1981 falls on Tuesday 5 May. Tṛtīyā runs from 15:40 on Tue 5 May to 12:18 on Wed 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8287, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-05-05T15:39:36-05:00", "utc": "1981-05-05T20:39:36Z", "ms": 357943176116.2125 }, "end": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-05T15:39:36-05:00", "utc": "1981-05-05T20:39:36Z", "ms": 357943176116.2125 }, "end": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 } }, "kaala": "purvahna", "days": [ { "local_date": "1981-05-05", "window": { "start": { "local": "1981-05-05T05:55:28-05:00", "utc": "1981-05-05T10:55:28Z", "ms": 357908127770.59314 }, "end": { "local": "1981-05-05T10:00:19-05:00", "utc": "1981-05-05T15:00:19Z", "ms": 357922818829.67255 } }, "covered_min": 0, "window_min": 245, "qualifies": false }, { "local_date": "1981-05-06", "window": { "start": { "local": "1981-05-06T05:55:18-05:00", "utc": "1981-05-06T10:55:18Z", "ms": 357994518361.3516 }, "end": { "local": "1981-05-06T10:00:13-05:00", "utc": "1981-05-06T15:00:13Z", "ms": 358009212639.9552 } }, "covered_min": 245, "window_min": 245, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:40 on Tue 5 May to 12:18 on Wed 6 May.", "fact": "1981-05-05T20:39:36Z → 1981-05-06T17:18:19Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:55–10:00 on the 5th, 05:55–10:00 on the 6th.", "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 245 minutes on the 5th and 245 of 245 on the 6th.", "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 8287 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Cali, 1981: Wednesday 6 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-05-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-06", "confidence": "determinate" } ], "quote": "In Cali, Akṣaya Tṛtīyā 1981 falls on Wednesday 6 May. Tṛtīyā runs from 15:40 on Tue 5 May to 12:18 on Wed 6 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-05-06", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 500, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 }, "end": { "local": "1981-05-07T09:29:22-05:00", "utc": "1981-05-07T14:29:22Z", "ms": 358093762151.16986 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-06T12:18:19-05:00", "utc": "1981-05-06T17:18:19Z", "ms": 358017499447.8388 }, "end": { "local": "1981-05-07T09:29:22-05:00", "utc": "1981-05-07T14:29:22Z", "ms": 358093762151.16986 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-06", "window": { "start": { "local": "1981-05-06T11:38:40-05:00", "utc": "1981-05-06T16:38:40Z", "ms": 358015119779.25696 }, "end": { "local": "1981-05-06T12:26:40-05:00", "utc": "1981-05-06T17:26:40Z", "ms": 358017999779.25696 } }, "covered_min": 8, "window_min": 48, "qualifies": true }, { "local_date": "1981-05-07", "window": { "start": { "local": "1981-05-07T11:38:36-05:00", "utc": "1981-05-07T16:38:36Z", "ms": 358101515750.8605 }, "end": { "local": "1981-05-07T12:26:36-05:00", "utc": "1981-05-07T17:26:36Z", "ms": 358104395750.8605 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:18 on Wed 6 May to 09:29 on Thu 7 May.", "fact": "1981-05-06T17:18:19Z → 1981-05-07T14:29:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 6th, 11:39–12:27 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 8 of 48 minutes on the 6th and 0 of 48 on the 7th.", "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 500 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Wednesday 6 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": "1981-05-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-06", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Wednesday 6 May. Caturthī runs from 12:18 on Wed 6 May to 09:29 on Thu 7 May and covers 8 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-05-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7754, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-05-07T09:29:22-05:00", "utc": "1981-05-07T14:29:22Z", "ms": 358093762151.16986 }, "end": { "local": "1981-05-08T07:20:37-05:00", "utc": "1981-05-08T12:20:37Z", "ms": 358172436836.14996 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-07T09:29:22-05:00", "utc": "1981-05-07T14:29:22Z", "ms": 358093762151.16986 }, "end": { "local": "1981-05-08T07:20:37-05:00", "utc": "1981-05-08T12:20:37Z", "ms": 358172436836.14996 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-07", "window": { "start": { "local": "1981-05-07T11:38:36-05:00", "utc": "1981-05-07T16:38:36Z", "ms": 358101515750.8605 }, "end": { "local": "1981-05-07T12:26:36-05:00", "utc": "1981-05-07T17:26:36Z", "ms": 358104395750.8605 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-05-08", "window": { "start": { "local": "1981-05-08T11:38:32-05:00", "utc": "1981-05-08T16:38:32Z", "ms": 358187912273.60236 }, "end": { "local": "1981-05-08T12:26:32-05:00", "utc": "1981-05-08T17:26:32Z", "ms": 358190792273.60236 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 09:29 on Thu 7 May to 07:21 on Fri 8 May.", "fact": "1981-05-07T14:29:22Z → 1981-05-08T12:20:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 7th, 11:39–12:27 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7754 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Cali, 1981: Thursday 7 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-07", "confidence": "determinate" } ], "quote": "In Cali, Śaṅkara Jayantī 1981 falls on Thursday 7 May. Pañcamī runs from 09:29 on Thu 7 May to 07:21 on Fri 8 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20465, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-05-09T05:57:24-05:00", "utc": "1981-05-09T10:57:24Z", "ms": 358253844310.2676 }, "end": { "local": "1981-05-10T05:21:56-05:00", "utc": "1981-05-10T10:21:56Z", "ms": 358338115869.4165 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-09T05:57:24-05:00", "utc": "1981-05-09T10:57:24Z", "ms": 358253844310.2676 }, "end": { "local": "1981-05-10T05:21:56-05:00", "utc": "1981-05-10T10:21:56Z", "ms": 358338115869.4165 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-09", "window": { "start": { "local": "1981-05-09T11:38:29-05:00", "utc": "1981-05-09T16:38:29Z", "ms": 358274309347.6653 }, "end": { "local": "1981-05-09T12:26:29-05:00", "utc": "1981-05-09T17:26:29Z", "ms": 358277189347.6653 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-05-10", "window": { "start": { "local": "1981-05-10T11:38:27-05:00", "utc": "1981-05-10T16:38:27Z", "ms": 358360706973.69434 }, "end": { "local": "1981-05-10T12:26:27-05:00", "utc": "1981-05-10T17:26:27Z", "ms": 358363586973.69434 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:57 on Sat 9 May to 05:22 on Sun 10 May.", "fact": "1981-05-09T10:57:24Z → 1981-05-10T10:21:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 9th, 11:38–12:26 on the 10th.", "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 9th and 0 of 48 on the 10th.", "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 20465 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Cali, 1981: Saturday 9 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-09", "confidence": "determinate" } ], "quote": "In Cali, Gaṅgotpatti (Ganga Saptami) 1981 falls on Saturday 9 May. Saptamī runs from 05:57 on Sat 9 May to 05:22 on Sun 10 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-05-14", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7106, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-05-13T07:52:56-05:00", "utc": "1981-05-13T12:52:56Z", "ms": 358606375683.9335 }, "end": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-13T07:52:56-05:00", "utc": "1981-05-13T12:52:56Z", "ms": 358606375683.9335 }, "end": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-05-13", "window": { "start": { "local": "1981-05-13T05:54:30-05:00", "utc": "1981-05-13T10:54:30Z", "ms": 358599269717.64014 }, "end": { "local": "1981-05-13T05:54:30-05:00", "utc": "1981-05-13T10:54:30Z", "ms": 358599269717.64014 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-05-14", "window": { "start": { "local": "1981-05-14T05:54:25-05:00", "utc": "1981-05-14T10:54:25Z", "ms": 358685665261.36127 }, "end": { "local": "1981-05-14T05:54:25-05:00", "utc": "1981-05-14T10:54:25Z", "ms": 358685665261.36127 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:53 on Wed 13 May to 09:46 on Thu 14 May.", "fact": "1981-05-13T12:52:56Z → 1981-05-14T14:46:14Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 13th and 05:54 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 13th and is 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 7106 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Cali, 1981: Thursday 14 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": "1981-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-14", "confidence": "determinate" } ], "quote": "In Cali, Mohinī Ekādaśī 1981 falls on Thursday 14 May. Ekādaśī runs from 07:53 on Wed 13 May to 09:46 on Thu 14 May and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-05-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1110, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 }, "end": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 }, "end": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-14", "window": { "start": { "local": "1981-05-14T11:38:23-05:00", "utc": "1981-05-14T16:38:23Z", "ms": 358706303016.616 }, "end": { "local": "1981-05-14T12:26:23-05:00", "utc": "1981-05-14T17:26:23Z", "ms": 358709183016.616 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-05-15", "window": { "start": { "local": "1981-05-15T11:38:23-05:00", "utc": "1981-05-15T16:38:23Z", "ms": 358792703415.2439 }, "end": { "local": "1981-05-15T12:26:23-05:00", "utc": "1981-05-15T17:26:23Z", "ms": 358795583415.2439 } }, "covered_min": 19, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:46 on Thu 14 May to 11:57 on Fri 15 May.", "fact": "1981-05-14T14:46:14Z → 1981-05-15T16:56:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 14th, 11:38–12:26 on the 15th.", "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 14th and 19 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1110 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Cali, 1981: Thursday 14 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": "1981-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-14", "confidence": "determinate" } ], "quote": "In Cali, Paraśurāma Dvādaśī 1981 falls on Thursday 14 May. Dvādaśī runs from 09:46 on Thu 14 May to 11:57 on Fri 15 May and covers all of madhyāhna that midday. It also reaches the next midday for 19 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1110, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 }, "end": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-14T09:46:14-05:00", "utc": "1981-05-14T14:46:14Z", "ms": 358699573655.84125 }, "end": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-14", "window": { "start": { "local": "1981-05-14T11:38:23-05:00", "utc": "1981-05-14T16:38:23Z", "ms": 358706303016.616 }, "end": { "local": "1981-05-14T12:26:23-05:00", "utc": "1981-05-14T17:26:23Z", "ms": 358709183016.616 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-05-15", "window": { "start": { "local": "1981-05-15T11:38:23-05:00", "utc": "1981-05-15T16:38:23Z", "ms": 358792703415.2439 }, "end": { "local": "1981-05-15T12:26:23-05:00", "utc": "1981-05-15T17:26:23Z", "ms": 358795583415.2439 } }, "covered_min": 19, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:46 on Thu 14 May to 11:57 on Fri 15 May.", "fact": "1981-05-14T14:46:14Z → 1981-05-15T16:56:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 14th, 11:38–12:26 on the 15th.", "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 14th and 19 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1110 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Cali, 1981: Thursday 14 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": "1981-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-14", "confidence": "determinate" } ], "quote": "In Cali, Rukmiṇī Dvādaśī 1981 falls on Thursday 14 May. Dvādaśī runs from 09:46 on Thu 14 May to 11:57 on Fri 15 May and covers all of madhyāhna that midday. It also reaches the next midday for 19 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-05-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13994, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 }, "end": { "local": "1981-05-16T14:17:16-05:00", "utc": "1981-05-16T19:17:16Z", "ms": 358888636380.0035 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-15T11:56:54-05:00", "utc": "1981-05-15T16:56:54Z", "ms": 358793813614.6534 }, "end": { "local": "1981-05-16T14:17:16-05:00", "utc": "1981-05-16T19:17:16Z", "ms": 358888636380.0035 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-05-15", "window": { "start": { "local": "1981-05-15T18:10:25-05:00", "utc": "1981-05-15T23:10:25Z", "ms": 358816225394.0988 }, "end": { "local": "1981-05-15T19:44:16-05:00", "utc": "1981-05-16T00:44:16Z", "ms": 358821856440.8247 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-05-16", "window": { "start": { "local": "1981-05-16T18:10:30-05:00", "utc": "1981-05-16T23:10:30Z", "ms": 358902630493.417 }, "end": { "local": "1981-05-16T19:44:21-05:00", "utc": "1981-05-17T00:44:21Z", "ms": 358908260519.23865 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:57 on Fri 15 May to 14:17 on Sat 16 May.", "fact": "1981-05-15T16:56:54Z → 1981-05-16T19:17:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:44 on the 15th, 18:11–19:44 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 94 of 94 minutes on the 15th and 0 of 94 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 13994 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Friday 15 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": "1981-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-15", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Friday 15 May. Trayodaśī runs from 11:57 on Fri 15 May to 14:17 on Sat 16 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-05-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5367, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-05-16T14:17:16-05:00", "utc": "1981-05-16T19:17:16Z", "ms": 358888636380.0035 }, "end": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-16T14:17:16-05:00", "utc": "1981-05-16T19:17:16Z", "ms": 358888636380.0035 }, "end": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-05-16", "window": { "start": { "local": "1981-05-16T18:10:30-05:00", "utc": "1981-05-16T23:10:30Z", "ms": 358902630493.417 }, "end": { "local": "1981-05-16T19:44:21-05:00", "utc": "1981-05-17T00:44:21Z", "ms": 358908260519.23865 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-05-17", "window": { "start": { "local": "1981-05-17T18:10:36-05:00", "utc": "1981-05-17T23:10:36Z", "ms": 358989036066.67114 }, "end": { "local": "1981-05-17T19:44:25-05:00", "utc": "1981-05-18T00:44:25Z", "ms": 358994665093.0559 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:17 on Sat 16 May to 16:41 on Sun 17 May.", "fact": "1981-05-16T19:17:16Z → 1981-05-17T21:41:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:11–19:44 on the 16th, 18:11–19:44 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 16th and 0 of 94 on the 17th.", "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 5367 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Cali, 1981: Saturday 16 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": "1981-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-16", "confidence": "determinate" } ], "quote": "In Cali, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1981 falls on Saturday 16 May. Caturdaśī runs from 14:17 on Sat 16 May to 16:41 on Sun 17 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15283, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 }, "end": { "local": "1981-05-18T19:03:35-05:00", "utc": "1981-05-19T00:03:35Z", "ms": 359078614902.99506 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 }, "end": { "local": "1981-05-18T19:03:35-05:00", "utc": "1981-05-19T00:03:35Z", "ms": 359078614902.99506 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-17", "window": { "start": { "local": "1981-05-17T11:38:26-05:00", "utc": "1981-05-17T16:38:26Z", "ms": 358965505876.87524 }, "end": { "local": "1981-05-17T12:26:26-05:00", "utc": "1981-05-17T17:26:26Z", "ms": 358968385876.87524 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-05-18", "window": { "start": { "local": "1981-05-18T11:38:28-05:00", "utc": "1981-05-18T16:38:28Z", "ms": 359051907937.3118 }, "end": { "local": "1981-05-18T12:26:28-05:00", "utc": "1981-05-18T17:26:28Z", "ms": 359054787937.3118 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:41 on Sun 17 May to 19:04 on Mon 18 May.", "fact": "1981-05-17T21:41:09Z → 1981-05-19T00:03:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 17th, 11:38–12:26 on the 18th.", "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 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15283 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Cali, 1981: Monday 18 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": "1981-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-18", "confidence": "determinate" } ], "quote": "In Cali, Buddha Pūrṇimā 1981 falls on Monday 18 May. Pūrṇimā runs from 16:41 on Sun 17 May to 19:04 on Mon 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15283, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 }, "end": { "local": "1981-05-18T19:03:35-05:00", "utc": "1981-05-19T00:03:35Z", "ms": 359078614902.99506 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-17T16:41:09-05:00", "utc": "1981-05-17T21:41:09Z", "ms": 358983668667.4497 }, "end": { "local": "1981-05-18T19:03:35-05:00", "utc": "1981-05-19T00:03:35Z", "ms": 359078614902.99506 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-05-17", "window": { "start": { "local": "1981-05-17T11:38:26-05:00", "utc": "1981-05-17T16:38:26Z", "ms": 358965505876.87524 }, "end": { "local": "1981-05-17T12:26:26-05:00", "utc": "1981-05-17T17:26:26Z", "ms": 358968385876.87524 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-05-18", "window": { "start": { "local": "1981-05-18T11:38:28-05:00", "utc": "1981-05-18T16:38:28Z", "ms": 359051907937.3118 }, "end": { "local": "1981-05-18T12:26:28-05:00", "utc": "1981-05-18T17:26:28Z", "ms": 359054787937.3118 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:41 on Sun 17 May to 19:04 on Mon 18 May.", "fact": "1981-05-17T21:41:09Z → 1981-05-19T00:03:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 17th, 11:38–12:26 on the 18th.", "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 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15283 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Cali, 1981: Monday 18 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": "1981-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-18", "confidence": "determinate" } ], "quote": "In Cali, Sampat Gaurī Vrata 1981 falls on Monday 18 May. Pūrṇimā runs from 16:41 on Sun 17 May to 19:04 on Mon 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-05-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17097, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-05-22T01:19:33-05:00", "utc": "1981-05-22T06:19:33Z", "ms": 359360373240.8377 }, "end": { "local": "1981-05-23T02:51:16-05:00", "utc": "1981-05-23T07:51:16Z", "ms": 359452276358.73816 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-22T01:19:33-05:00", "utc": "1981-05-22T06:19:33Z", "ms": 359360373240.8377 }, "end": { "local": "1981-05-23T02:51:16-05:00", "utc": "1981-05-23T07:51:16Z", "ms": 359452276358.73816 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-05-21", "window": { "start": { "local": "1981-05-21T20:34:36-05:00", "utc": "1981-05-22T01:34:36Z", "ms": 359343276484.02075 }, "end": { "local": "1981-05-21T20:34:36-05:00", "utc": "1981-05-22T01:34:36Z", "ms": 359343276484.02075 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-05-22", "window": { "start": { "local": "1981-05-22T21:24:50-05:00", "utc": "1981-05-23T02:24:50Z", "ms": 359432689852.61194 }, "end": { "local": "1981-05-22T21:24:50-05:00", "utc": "1981-05-23T02:24:50Z", "ms": 359432689852.61194 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:20 on Fri 22 May to 02:51 on Sat 23 May.", "fact": "1981-05-22T06:19:33Z → 1981-05-23T07:51:16Z" }, { "step": "kaala", "text": "Moonrise is at 20:35 on the 21st and 21:25 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is on the 22nd.", "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 17097 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Friday 22 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": "1981-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-22", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Friday 22 May. Caturthī runs from 01:20 on Fri 22 May to 02:51 on Sat 23 May and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-05-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-05-29", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22251, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-05-28T23:43:42-05:00", "utc": "1981-05-29T04:43:42Z", "ms": 359959422412.1719 }, "end": { "local": "1981-05-29T20:54:46-05:00", "utc": "1981-05-30T01:54:46Z", "ms": 360035686264.41327 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-28T23:43:42-05:00", "utc": "1981-05-29T04:43:42Z", "ms": 359959422412.1719 }, "end": { "local": "1981-05-29T20:54:46-05:00", "utc": "1981-05-30T01:54:46Z", "ms": 360035686264.41327 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-05-29", "window": { "start": { "local": "1981-05-29T05:54:34-05:00", "utc": "1981-05-29T10:54:34Z", "ms": 359981673889.74396 }, "end": { "local": "1981-05-29T05:54:34-05:00", "utc": "1981-05-29T10:54:34Z", "ms": 359981673889.74396 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-05-30", "window": { "start": { "local": "1981-05-30T05:54:39-05:00", "utc": "1981-05-30T10:54:39Z", "ms": 360068079315.33655 }, "end": { "local": "1981-05-30T05:54:39-05:00", "utc": "1981-05-30T10:54:39Z", "ms": 360068079315.33655 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:44 on Thu 28 May to 20:55 on Fri 29 May.", "fact": "1981-05-29T04:43:42Z → 1981-05-30T01:54:46Z" }, { "step": "kaala", "text": "Sunrise is at 05:55 on the 29th and 05:55 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22251 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Cali, 1981: Friday 29 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": "1981-05-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-29", "confidence": "determinate" } ], "quote": "In Cali, Aparā Ekādaśī 1981 falls on Friday 29 May. Ekādaśī runs from 23:44 on Thu 28 May to 20:55 on Fri 29 May and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-05-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-05-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2092, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-05-30T17:37:36-05:00", "utc": "1981-05-30T22:37:36Z", "ms": 360110256475.55414 }, "end": { "local": "1981-05-31T14:01:13-05:00", "utc": "1981-05-31T19:01:13Z", "ms": 360183673205.97363 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-30T17:37:36-05:00", "utc": "1981-05-30T22:37:36Z", "ms": 360110256475.55414 }, "end": { "local": "1981-05-31T14:01:13-05:00", "utc": "1981-05-31T19:01:13Z", "ms": 360183673205.97363 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-05-30", "window": { "start": { "local": "1981-05-30T18:12:29-05:00", "utc": "1981-05-30T23:12:29Z", "ms": 360112348743.313 }, "end": { "local": "1981-05-30T19:46:07-05:00", "utc": "1981-05-31T00:46:07Z", "ms": 360117966949.8153 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-05-31", "window": { "start": { "local": "1981-05-31T18:12:40-05:00", "utc": "1981-05-31T23:12:40Z", "ms": 360198760127.02606 }, "end": { "local": "1981-05-31T19:46:18-05:00", "utc": "1981-06-01T00:46:18Z", "ms": 360204377683.6585 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:38 on Sat 30 May to 14:01 on Sun 31 May.", "fact": "1981-05-30T22:37:36Z → 1981-05-31T19:01:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:46 on the 30th, 18:13–19:46 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 30th and 0 of 94 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2092 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Saturday 30 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": "1981-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-30", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Saturday 30 May. Trayodaśī runs from 17:38 on Sat 30 May to 14:01 on Sun 31 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-05-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-05-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34713, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-05-31T14:01:13-05:00", "utc": "1981-05-31T19:01:13Z", "ms": 360183673205.97363 }, "end": { "local": "1981-06-01T10:15:42-05:00", "utc": "1981-06-01T15:15:42Z", "ms": 360256541959.85 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-05-31T14:01:13-05:00", "utc": "1981-05-31T19:01:13Z", "ms": 360183673205.97363 }, "end": { "local": "1981-06-01T10:15:42-05:00", "utc": "1981-06-01T15:15:42Z", "ms": 360256541959.85 } }, "kaala": "nishita", "days": [ { "local_date": "1981-05-31", "window": { "start": { "local": "1981-05-31T23:39:46-05:00", "utc": "1981-06-01T04:39:46Z", "ms": 360218385964.39764 }, "end": { "local": "1981-06-01T00:27:46-05:00", "utc": "1981-06-01T05:27:46Z", "ms": 360221265964.39764 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-06-01", "window": { "start": { "local": "1981-06-01T23:39:55-05:00", "utc": "1981-06-02T04:39:55Z", "ms": 360304795319.1587 }, "end": { "local": "1981-06-02T00:27:55-05:00", "utc": "1981-06-02T05:27:55Z", "ms": 360307675319.1587 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:01 on Sun 31 May to 10:16 on Mon 1 Jun.", "fact": "1981-05-31T19:01:13Z → 1981-06-01T15:15:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 31st, 23:40–00:28 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 31st and 0 of 48 on the 1st.", "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 34713 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Sunday 31 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": "1981-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-05-31", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Sunday 31 May. Caturdaśī runs from 14:01 on Sun 31 May to 10:16 on Mon 1 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-05-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31527, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-06-03T23:50:52-05:00", "utc": "1981-06-04T04:50:52Z", "ms": 360478251773.92346 }, "end": { "local": "1981-06-04T21:13:48-05:00", "utc": "1981-06-05T02:13:48Z", "ms": 360555228294.4469 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-03T23:50:52-05:00", "utc": "1981-06-04T04:50:52Z", "ms": 360478251773.92346 }, "end": { "local": "1981-06-04T21:13:48-05:00", "utc": "1981-06-05T02:13:48Z", "ms": 360555228294.4469 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-06-03", "window": { "start": { "local": "1981-06-03T11:40:11-05:00", "utc": "1981-06-03T16:40:11Z", "ms": 360434411170.2931 }, "end": { "local": "1981-06-03T12:28:11-05:00", "utc": "1981-06-03T17:28:11Z", "ms": 360437291170.2931 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-06-04", "window": { "start": { "local": "1981-06-04T11:40:21-05:00", "utc": "1981-06-04T16:40:21Z", "ms": 360520821388.0648 }, "end": { "local": "1981-06-04T12:28:21-05:00", "utc": "1981-06-04T17:28:21Z", "ms": 360523701388.0648 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 23:51 on Wed 3 Jun to 21:14 on Thu 4 Jun.", "fact": "1981-06-04T04:50:52Z → 1981-06-05T02:13:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 3rd, 11:40–12:28 on the 4th.", "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 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: purvaviddha → only-day · margin 31527 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Cali, 1981: Thursday 4 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-06-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-04", "confidence": "determinate" } ], "quote": "In Cali, Rambhā Tṛtīyā 1981 falls on Thursday 4 June. Tṛtīyā runs from 23:51 on Wed 3 Jun to 21:14 on Thu 4 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-06-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24488, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-06-04T21:13:48-05:00", "utc": "1981-06-05T02:13:48Z", "ms": 360555228294.4469 }, "end": { "local": "1981-06-05T19:16:40-05:00", "utc": "1981-06-06T00:16:40Z", "ms": 360634600046.394 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-04T21:13:48-05:00", "utc": "1981-06-05T02:13:48Z", "ms": 360555228294.4469 }, "end": { "local": "1981-06-05T19:16:40-05:00", "utc": "1981-06-06T00:16:40Z", "ms": 360634600046.394 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-06-04", "window": { "start": { "local": "1981-06-04T11:40:21-05:00", "utc": "1981-06-04T16:40:21Z", "ms": 360520821388.0648 }, "end": { "local": "1981-06-04T12:28:21-05:00", "utc": "1981-06-04T17:28:21Z", "ms": 360523701388.0648 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-06-05", "window": { "start": { "local": "1981-06-05T11:40:32-05:00", "utc": "1981-06-05T16:40:32Z", "ms": 360607231932.3696 }, "end": { "local": "1981-06-05T12:28:32-05:00", "utc": "1981-06-05T17:28:32Z", "ms": 360610111932.3696 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:14 on Thu 4 Jun to 19:17 on Fri 5 Jun.", "fact": "1981-06-05T02:13:48Z → 1981-06-06T00:16:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 4th, 11:41–12:29 on the 5th.", "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 4th and 48 of 48 on the 5th.", "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 24488 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Friday 5 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": "1981-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-05", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Friday 5 June. Caturthī runs from 21:14 on Thu 4 Jun to 19:17 on Fri 5 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18756, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-06-06T18:05:02-05:00", "utc": "1981-06-06T23:05:02Z", "ms": 360716702311.4888 }, "end": { "local": "1981-06-07T17:41:30-05:00", "utc": "1981-06-07T22:41:30Z", "ms": 360801690136.3714 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-06T18:05:02-05:00", "utc": "1981-06-06T23:05:02Z", "ms": 360716702311.4888 }, "end": { "local": "1981-06-07T17:41:30-05:00", "utc": "1981-06-07T22:41:30Z", "ms": 360801690136.3714 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-06-06", "window": { "start": { "local": "1981-06-06T11:40:43-05:00", "utc": "1981-06-06T16:40:43Z", "ms": 360693642780.5282 }, "end": { "local": "1981-06-06T12:28:43-05:00", "utc": "1981-06-06T17:28:43Z", "ms": 360696522780.5282 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-06-07", "window": { "start": { "local": "1981-06-07T11:40:54-05:00", "utc": "1981-06-07T16:40:54Z", "ms": 360780053910.60767 }, "end": { "local": "1981-06-07T12:28:54-05:00", "utc": "1981-06-07T17:28:54Z", "ms": 360782933910.60767 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:05 on Sat 6 Jun to 17:42 on Sun 7 Jun.", "fact": "1981-06-06T23:05:02Z → 1981-06-07T22:41:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 6th, 11:41–12:29 on the 7th.", "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 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18756 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Cali, 1981: Sunday 7 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-07", "confidence": "determinate" } ], "quote": "In Cali, Araṇya Gaurī Vrata 1981 falls on Sunday 7 June. Ṣaṣṭhī runs from 18:05 on Sat 6 Jun to 17:42 on Sun 7 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18756, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-06-06T18:05:02-05:00", "utc": "1981-06-06T23:05:02Z", "ms": 360716702311.4888 }, "end": { "local": "1981-06-07T17:41:30-05:00", "utc": "1981-06-07T22:41:30Z", "ms": 360801690136.3714 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-06T18:05:02-05:00", "utc": "1981-06-06T23:05:02Z", "ms": 360716702311.4888 }, "end": { "local": "1981-06-07T17:41:30-05:00", "utc": "1981-06-07T22:41:30Z", "ms": 360801690136.3714 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-06-06", "window": { "start": { "local": "1981-06-06T11:40:43-05:00", "utc": "1981-06-06T16:40:43Z", "ms": 360693642780.5282 }, "end": { "local": "1981-06-06T12:28:43-05:00", "utc": "1981-06-06T17:28:43Z", "ms": 360696522780.5282 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-06-07", "window": { "start": { "local": "1981-06-07T11:40:54-05:00", "utc": "1981-06-07T16:40:54Z", "ms": 360780053910.60767 }, "end": { "local": "1981-06-07T12:28:54-05:00", "utc": "1981-06-07T17:28:54Z", "ms": 360782933910.60767 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:05 on Sat 6 Jun to 17:42 on Sun 7 Jun.", "fact": "1981-06-06T23:05:02Z → 1981-06-07T22:41:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 6th, 11:41–12:29 on the 7th.", "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 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18756 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Cali, 1981: Sunday 7 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-07", "confidence": "determinate" } ], "quote": "In Cali, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1981 falls on Sunday 7 June. Ṣaṣṭhī runs from 18:05 on Sat 6 Jun to 17:42 on Sun 7 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-06-12", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16769, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-06-11T22:57:32-05:00", "utc": "1981-06-12T03:57:32Z", "ms": 361166252488.30054 }, "end": { "local": "1981-06-13T01:17:15-05:00", "utc": "1981-06-13T06:17:15Z", "ms": 361261034614.17194 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-11T22:57:32-05:00", "utc": "1981-06-12T03:57:32Z", "ms": 361166252488.30054 }, "end": { "local": "1981-06-13T01:17:15-05:00", "utc": "1981-06-13T06:17:15Z", "ms": 361261034614.17194 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-06-12", "window": { "start": { "local": "1981-06-12T05:56:33-05:00", "utc": "1981-06-12T10:56:33Z", "ms": 361191392625.3253 }, "end": { "local": "1981-06-12T05:56:33-05:00", "utc": "1981-06-12T10:56:33Z", "ms": 361191392625.3253 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-06-13", "window": { "start": { "local": "1981-06-13T05:56:44-05:00", "utc": "1981-06-13T10:56:44Z", "ms": 361277803918.57477 }, "end": { "local": "1981-06-13T05:56:44-05:00", "utc": "1981-06-13T10:56:44Z", "ms": 361277803918.57477 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:58 on Thu 11 Jun to 01:17 on Sat 13 Jun.", "fact": "1981-06-12T03:57:32Z → 1981-06-13T06:17:15Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 12th and 05:57 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "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 16769 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Cali, 1981: Friday 12 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": "1981-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-12", "confidence": "determinate" } ], "quote": "In Cali, Nirjalā Ekādaśī 1981 falls on Friday 12 June. Ekādaśī runs from 22:58 on Thu 11 Jun to 01:17 on Sat 13 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28868, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-06-13T01:17:15-05:00", "utc": "1981-06-13T06:17:15Z", "ms": 361261034614.17194 }, "end": { "local": "1981-06-14T03:41:10-05:00", "utc": "1981-06-14T08:41:10Z", "ms": 361356069912.9576 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-13T01:17:15-05:00", "utc": "1981-06-13T06:17:15Z", "ms": 361261034614.17194 }, "end": { "local": "1981-06-14T03:41:10-05:00", "utc": "1981-06-14T08:41:10Z", "ms": 361356069912.9576 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-06-13", "window": { "start": { "local": "1981-06-13T11:42:05-05:00", "utc": "1981-06-13T16:42:05Z", "ms": 361298525446.12024 }, "end": { "local": "1981-06-13T12:30:05-05:00", "utc": "1981-06-13T17:30:05Z", "ms": 361301405446.12024 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-06-14", "window": { "start": { "local": "1981-06-14T11:42:18-05:00", "utc": "1981-06-14T16:42:18Z", "ms": 361384937971.8096 }, "end": { "local": "1981-06-14T12:30:18-05:00", "utc": "1981-06-14T17:30:18Z", "ms": 361387817971.8096 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:17 on Sat 13 Jun to 03:41 on Sun 14 Jun.", "fact": "1981-06-13T06:17:15Z → 1981-06-14T08:41:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 13th, 11:42–12:30 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28868 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Cali, 1981: Saturday 13 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-13", "confidence": "determinate" } ], "quote": "In Cali, Śrī Rāma Dvādaśī 1981 falls on Saturday 13 June. Dvādaśī runs from 01:17 on Sat 13 Jun to 03:41 on Sun 14 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-06-14", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28331, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-06-14T03:41:10-05:00", "utc": "1981-06-14T08:41:10Z", "ms": 361356069912.9576 }, "end": { "local": "1981-06-15T06:00:59-05:00", "utc": "1981-06-15T11:00:59Z", "ms": 361450858953.40735 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-14T03:41:10-05:00", "utc": "1981-06-14T08:41:10Z", "ms": 361356069912.9576 }, "end": { "local": "1981-06-15T06:00:59-05:00", "utc": "1981-06-15T11:00:59Z", "ms": 361450858953.40735 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-06-13", "window": { "start": { "local": "1981-06-13T18:15:27-05:00", "utc": "1981-06-13T23:15:27Z", "ms": 361322126973.6658 }, "end": { "local": "1981-06-13T19:48:59-05:00", "utc": "1981-06-14T00:48:59Z", "ms": 361327738774.74945 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1981-06-14", "window": { "start": { "local": "1981-06-14T18:15:40-05:00", "utc": "1981-06-14T23:15:40Z", "ms": 361408540461.82556 }, "end": { "local": "1981-06-14T19:49:12-05:00", "utc": "1981-06-15T00:49:12Z", "ms": 361414152039.6551 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:41 on Sun 14 Jun to 06:01 on Mon 15 Jun.", "fact": "1981-06-14T08:41:10Z → 1981-06-15T11:00:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:15–19:49 on the 13th, 18:16–19:49 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 0 of 94 minutes on the 13th and 94 of 94 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 28331 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Sunday 14 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": "1981-06-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-14", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Sunday 14 June. Trayodaśī runs from 03:41 on Sun 14 Jun to 06:01 on Mon 15 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-06-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29513, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-06-16T08:10:18-05:00", "utc": "1981-06-16T13:10:18Z", "ms": 361545018192.15784 }, "end": { "local": "1981-06-17T10:04:27-05:00", "utc": "1981-06-17T15:04:27Z", "ms": 361638267429.4124 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-16T08:10:18-05:00", "utc": "1981-06-16T13:10:18Z", "ms": 361545018192.15784 }, "end": { "local": "1981-06-17T10:04:27-05:00", "utc": "1981-06-17T15:04:27Z", "ms": 361638267429.4124 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-06-16", "window": { "start": { "local": "1981-06-16T18:16:07-05:00", "utc": "1981-06-16T23:16:07Z", "ms": 361581367378.4032 }, "end": { "local": "1981-06-16T19:49:39-05:00", "utc": "1981-06-17T00:49:39Z", "ms": 361586978607.50995 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-06-17", "window": { "start": { "local": "1981-06-17T18:16:21-05:00", "utc": "1981-06-17T23:16:21Z", "ms": 361667780765.9973 }, "end": { "local": "1981-06-17T19:49:52-05:00", "utc": "1981-06-18T00:49:52Z", "ms": 361673391869.86646 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:10 on Tue 16 Jun to 10:04 on Wed 17 Jun.", "fact": "1981-06-16T13:10:18Z → 1981-06-17T15:04:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:16–19:50 on the 16th, 18:16–19:50 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 94 of 94 minutes on the 16th and 0 of 94 on the 17th.", "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 29513 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Cali, 1981: Tuesday 16 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": "1981-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-16", "confidence": "determinate" } ], "quote": "In Cali, Vaṭa Sāvitrī Vrata 1981 falls on Tuesday 16 June. Pūrṇimā runs from 08:10 on Tue 16 Jun to 10:04 on Wed 17 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-06-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26350, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-06-20T13:43:49-05:00", "utc": "1981-06-20T18:43:49Z", "ms": 361910629455.0219 }, "end": { "local": "1981-06-21T14:06:48-05:00", "utc": "1981-06-21T19:06:48Z", "ms": 361998407561.7021 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-20T13:43:49-05:00", "utc": "1981-06-20T18:43:49Z", "ms": 361910629455.0219 }, "end": { "local": "1981-06-21T14:06:48-05:00", "utc": "1981-06-21T19:06:48Z", "ms": 361998407561.7021 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-06-20", "window": { "start": { "local": "1981-06-20T21:02:59-05:00", "utc": "1981-06-21T02:02:59Z", "ms": 361936979263.85254 }, "end": { "local": "1981-06-20T21:02:59-05:00", "utc": "1981-06-21T02:02:59Z", "ms": 361936979263.85254 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-06-21", "window": { "start": { "local": "1981-06-21T21:52:43-05:00", "utc": "1981-06-22T02:52:43Z", "ms": 362026363237.728 }, "end": { "local": "1981-06-21T21:52:43-05:00", "utc": "1981-06-22T02:52:43Z", "ms": 362026363237.728 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:44 on Sat 20 Jun to 14:07 on Sun 21 Jun.", "fact": "1981-06-20T18:43:49Z → 1981-06-21T19:06:48Z" }, { "step": "kaala", "text": "Moonrise is at 21:03 on the 20th and 21:53 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 20th and is not on the 21st.", "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 26350 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Saturday 20 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": "1981-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-20", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Saturday 20 June. Caturthī runs from 13:44 on Sat 20 Jun to 14:07 on Sun 21 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-06-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-06-27", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1158, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-06-27T05:40:24-05:00", "utc": "1981-06-27T10:40:24Z", "ms": 362486423847.2609 }, "end": { "local": "1981-06-28T02:42:33-05:00", "utc": "1981-06-28T07:42:33Z", "ms": 362562152990.56976 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-27T05:40:24-05:00", "utc": "1981-06-27T10:40:24Z", "ms": 362486423847.2609 }, "end": { "local": "1981-06-28T02:42:33-05:00", "utc": "1981-06-28T07:42:33Z", "ms": 362562152990.56976 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-06-27", "window": { "start": { "local": "1981-06-27T05:59:41-05:00", "utc": "1981-06-27T10:59:41Z", "ms": 362487581391.92596 }, "end": { "local": "1981-06-27T05:59:41-05:00", "utc": "1981-06-27T10:59:41Z", "ms": 362487581391.92596 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-06-28", "window": { "start": { "local": "1981-06-28T05:59:55-05:00", "utc": "1981-06-28T10:59:55Z", "ms": 362573994625.6132 }, "end": { "local": "1981-06-28T05:59:55-05:00", "utc": "1981-06-28T10:59:55Z", "ms": 362573994625.6132 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:40 on Sat 27 Jun to 02:43 on Sun 28 Jun.", "fact": "1981-06-27T10:40:24Z → 1981-06-28T07:42:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 27th and 06:00 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is 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": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1158 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Cali, 1981: Saturday 27 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": "1981-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-27", "confidence": "determinate" } ], "quote": "In Cali, Yoginī Ekādaśī 1981 falls on Saturday 27 June. Ekādaśī runs from 05:40 on Sat 27 Jun to 02:43 on Sun 28 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-06-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-06-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1388, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-06-28T23:31:34-05:00", "utc": "1981-06-29T04:31:34Z", "ms": 362637094303.12115 }, "end": { "local": "1981-06-29T20:15:30-05:00", "utc": "1981-06-30T01:15:30Z", "ms": 362711729645.78217 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-28T23:31:34-05:00", "utc": "1981-06-29T04:31:34Z", "ms": 362637094303.12115 }, "end": { "local": "1981-06-29T20:15:30-05:00", "utc": "1981-06-30T01:15:30Z", "ms": 362711729645.78217 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-06-28", "window": { "start": { "local": "1981-06-28T18:18:39-05:00", "utc": "1981-06-28T23:18:39Z", "ms": 362618318624.7646 }, "end": { "local": "1981-06-28T19:52:11-05:00", "utc": "1981-06-29T00:52:11Z", "ms": 362623930516.12115 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1981-06-29", "window": { "start": { "local": "1981-06-29T18:18:50-05:00", "utc": "1981-06-29T23:18:50Z", "ms": 362704729740.4838 }, "end": { "local": "1981-06-29T19:52:22-05:00", "utc": "1981-06-30T00:52:22Z", "ms": 362710341897.3948 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:32 on Sun 28 Jun to 20:15 on Mon 29 Jun.", "fact": "1981-06-29T04:31:34Z → 1981-06-30T01:15:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–19:52 on the 28th, 18:19–19:52 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 94 minutes on the 28th and 94 of 94 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 1388 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Monday 29 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": "1981-06-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-29", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Monday 29 June. Trayodaśī runs from 23:32 on Sun 28 Jun to 20:15 on Mon 29 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-06-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-06-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-06-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12606, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-06-29T20:15:30-05:00", "utc": "1981-06-30T01:15:30Z", "ms": 362711729645.78217 }, "end": { "local": "1981-06-30T17:03:01-05:00", "utc": "1981-06-30T22:03:01Z", "ms": 362786580685.9543 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-06-29T20:15:30-05:00", "utc": "1981-06-30T01:15:30Z", "ms": 362711729645.78217 }, "end": { "local": "1981-06-30T17:03:01-05:00", "utc": "1981-06-30T22:03:01Z", "ms": 362786580685.9543 } }, "kaala": "nishita", "days": [ { "local_date": "1981-06-29", "window": { "start": { "local": "1981-06-29T23:45:35-05:00", "utc": "1981-06-30T04:45:35Z", "ms": 362724335328.8999 }, "end": { "local": "1981-06-30T00:33:35-05:00", "utc": "1981-06-30T05:33:35Z", "ms": 362727215328.8999 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-06-30", "window": { "start": { "local": "1981-06-30T23:45:47-05:00", "utc": "1981-07-01T04:45:47Z", "ms": 362810746717.36914 }, "end": { "local": "1981-07-01T00:33:47-05:00", "utc": "1981-07-01T05:33:47Z", "ms": 362813626717.36914 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:15 on Mon 29 Jun to 17:03 on Tue 30 Jun.", "fact": "1981-06-30T01:15:30Z → 1981-06-30T22:03:01Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 29th, 23:46–00:34 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 12606 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Monday 29 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": "1981-06-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-06-29", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Monday 29 June. Caturdaśī runs from 20:15 on Mon 29 Jun to 17:03 on Tue 30 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-06-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1285, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1981-07-02T11:24:37-05:00", "utc": "1981-07-02T16:24:37Z", "ms": 362939077470.83777 }, "end": { "local": "1981-07-03T09:15:53-05:00", "utc": "1981-07-03T14:15:53Z", "ms": 363017752644.7174 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-02T11:24:37-05:00", "utc": "1981-07-02T16:24:37Z", "ms": 362939077470.83777 }, "end": { "local": "1981-07-03T09:15:53-05:00", "utc": "1981-07-03T14:15:53Z", "ms": 363017752644.7174 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-07-02", "window": { "start": { "local": "1981-07-02T11:46:03-05:00", "utc": "1981-07-02T16:46:03Z", "ms": 362940362861.61487 }, "end": { "local": "1981-07-02T12:34:03-05:00", "utc": "1981-07-02T17:34:03Z", "ms": 362943242861.61487 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-07-03", "window": { "start": { "local": "1981-07-03T11:46:14-05:00", "utc": "1981-07-03T16:46:14Z", "ms": 363026774011.5797 }, "end": { "local": "1981-07-03T12:34:14-05:00", "utc": "1981-07-03T17:34:14Z", "ms": 363029654011.5797 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:25 on Thu 2 Jul to 09:16 on Fri 3 Jul.", "fact": "1981-07-02T16:24:37Z → 1981-07-03T14:15:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 2nd, 11:46–12:34 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1285 s" }, { "step": "ruling", "text": "Rathayātrā, Cali, 1981: Thursday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-02", "confidence": "determinate" } ], "quote": "In Cali, Rathayātrā 1981 falls on Thursday 2 July. Dvitīyā runs from 11:25 on Thu 2 Jul to 09:16 on Fri 3 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-07-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14547, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-07-04T07:43:58-05:00", "utc": "1981-07-04T12:43:58Z", "ms": 363098637822.06903 }, "end": { "local": "1981-07-05T06:54:09-05:00", "utc": "1981-07-05T11:54:09Z", "ms": 363182049236.04224 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-04T07:43:58-05:00", "utc": "1981-07-04T12:43:58Z", "ms": 363098637822.06903 }, "end": { "local": "1981-07-05T06:54:09-05:00", "utc": "1981-07-05T11:54:09Z", "ms": 363182049236.04224 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-07-04", "window": { "start": { "local": "1981-07-04T11:46:25-05:00", "utc": "1981-07-04T16:46:25Z", "ms": 363113184845.3905 }, "end": { "local": "1981-07-04T12:34:25-05:00", "utc": "1981-07-04T17:34:25Z", "ms": 363116064845.3905 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-07-05", "window": { "start": { "local": "1981-07-05T11:46:35-05:00", "utc": "1981-07-05T16:46:35Z", "ms": 363199595339.0823 }, "end": { "local": "1981-07-05T12:34:35-05:00", "utc": "1981-07-05T17:34:35Z", "ms": 363202475339.0823 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:44 on Sat 4 Jul to 06:54 on Sun 5 Jul.", "fact": "1981-07-04T12:43:58Z → 1981-07-05T11:54:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 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": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14547 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Saturday 4 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": "1981-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-04", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Saturday 4 July. Caturthī runs from 07:44 on Sat 4 Jul to 06:54 on Sun 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-07-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17546, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-07-05T06:54:09-05:00", "utc": "1981-07-05T11:54:09Z", "ms": 363182049236.04224 }, "end": { "local": "1981-07-06T06:49:07-05:00", "utc": "1981-07-06T11:49:07Z", "ms": 363268147222.3655 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-05T06:54:09-05:00", "utc": "1981-07-05T11:54:09Z", "ms": 363182049236.04224 }, "end": { "local": "1981-07-06T06:49:07-05:00", "utc": "1981-07-06T11:49:07Z", "ms": 363268147222.3655 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-07-05", "window": { "start": { "local": "1981-07-05T11:46:35-05:00", "utc": "1981-07-05T16:46:35Z", "ms": 363199595339.0823 }, "end": { "local": "1981-07-05T12:34:35-05:00", "utc": "1981-07-05T17:34:35Z", "ms": 363202475339.0823 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-07-06", "window": { "start": { "local": "1981-07-06T11:46:45-05:00", "utc": "1981-07-06T16:46:45Z", "ms": 363286005470.36096 }, "end": { "local": "1981-07-06T12:34:45-05:00", "utc": "1981-07-06T17:34:45Z", "ms": 363288885470.36096 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:54 on Sun 5 Jul to 06:49 on Mon 6 Jul.", "fact": "1981-07-05T11:54:09Z → 1981-07-06T11:49:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 5th, 11:47–12:35 on the 6th.", "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 5th and 0 of 48 on the 6th.", "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 17546 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Cali, 1981: Sunday 5 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-05", "confidence": "determinate" } ], "quote": "In Cali, Skanda Pañcamī 1981 falls on Sunday 5 July. Pañcamī runs from 06:54 on Sun 5 Jul to 06:49 on Mon 6 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10790, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-07-07T07:28:15-05:00", "utc": "1981-07-07T12:28:15Z", "ms": 363356894926.3469 }, "end": { "local": "1981-07-08T08:47:14-05:00", "utc": "1981-07-08T13:47:14Z", "ms": 363448034084.8695 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-07T07:28:15-05:00", "utc": "1981-07-07T12:28:15Z", "ms": 363356894926.3469 }, "end": { "local": "1981-07-08T08:47:14-05:00", "utc": "1981-07-08T13:47:14Z", "ms": 363448034084.8695 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-07-07", "window": { "start": { "local": "1981-07-07T11:46:55-05:00", "utc": "1981-07-07T16:46:55Z", "ms": 363372415218.5419 }, "end": { "local": "1981-07-07T12:34:55-05:00", "utc": "1981-07-07T17:34:55Z", "ms": 363375295218.5419 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-07-08", "window": { "start": { "local": "1981-07-08T11:47:05-05:00", "utc": "1981-07-08T16:47:05Z", "ms": 363458824564.4199 }, "end": { "local": "1981-07-08T12:35:05-05:00", "utc": "1981-07-08T17:35:05Z", "ms": 363461704564.4199 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:28 on Tue 7 Jul to 08:47 on Wed 8 Jul.", "fact": "1981-07-07T12:28:15Z → 1981-07-08T13:47:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 7th, 11:47–12:35 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10790 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Cali, 1981: Tuesday 7 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-07", "confidence": "determinate" } ], "quote": "In Cali, Vivasvat Saptamī 1981 falls on Tuesday 7 July. Saptamī runs from 07:28 on Tue 7 Jul to 08:47 on Wed 8 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-07-12", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32982, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-07-11T15:12:13-05:00", "utc": "1981-07-11T20:12:13Z", "ms": 363730333292.03796 }, "end": { "local": "1981-07-12T17:31:27-05:00", "utc": "1981-07-12T22:31:27Z", "ms": 363825087316.67865 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-11T15:12:13-05:00", "utc": "1981-07-11T20:12:13Z", "ms": 363730333292.03796 }, "end": { "local": "1981-07-12T17:31:27-05:00", "utc": "1981-07-12T22:31:27Z", "ms": 363825087316.67865 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-07-11", "window": { "start": { "local": "1981-07-11T06:02:31-05:00", "utc": "1981-07-11T11:02:31Z", "ms": 363697351371.7287 }, "end": { "local": "1981-07-11T06:02:31-05:00", "utc": "1981-07-11T11:02:31Z", "ms": 363697351371.7287 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-07-12", "window": { "start": { "local": "1981-07-12T06:02:42-05:00", "utc": "1981-07-12T11:02:42Z", "ms": 363783761577.71094 }, "end": { "local": "1981-07-12T06:02:42-05:00", "utc": "1981-07-12T11:02:42Z", "ms": 363783761577.71094 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:12 on Sat 11 Jul to 17:31 on Sun 12 Jul.", "fact": "1981-07-11T20:12:13Z → 1981-07-12T22:31:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:03 on the 11th and 06:03 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 32982 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Cali, 1981: Sunday 12 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": "1981-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-12", "confidence": "determinate" } ], "quote": "In Cali, Hariśayanī Ekādaśī 1981 falls on Sunday 12 July. Ekādaśī runs from 15:12 on Sat 11 Jul to 17:31 on Sun 12 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-07-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-07-14", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 972, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-07-13T19:38:05-05:00", "utc": "1981-07-14T00:38:05Z", "ms": 363919085335.43713 }, "end": { "local": "1981-07-14T21:24:27-05:00", "utc": "1981-07-15T02:24:27Z", "ms": 364011866686.38385 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-13T19:38:05-05:00", "utc": "1981-07-14T00:38:05Z", "ms": 363919085335.43713 }, "end": { "local": "1981-07-14T21:24:27-05:00", "utc": "1981-07-15T02:24:27Z", "ms": 364011866686.38385 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-07-13", "window": { "start": { "local": "1981-07-13T18:20:38-05:00", "utc": "1981-07-13T23:20:38Z", "ms": 363914437939.3155 }, "end": { "local": "1981-07-13T19:54:17-05:00", "utc": "1981-07-14T00:54:17Z", "ms": 363920056996.43854 } }, "covered_min": 16, "window_min": 94, "qualifies": true }, { "local_date": "1981-07-14", "window": { "start": { "local": "1981-07-14T18:20:42-05:00", "utc": "1981-07-14T23:20:42Z", "ms": 364000841684.3078 }, "end": { "local": "1981-07-14T19:54:21-05:00", "utc": "1981-07-15T00:54:21Z", "ms": 364006461449.69366 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:38 on Mon 13 Jul to 21:24 on Tue 14 Jul.", "fact": "1981-07-14T00:38:05Z → 1981-07-15T02:24:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:54 on the 13th, 18:21–19:54 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 16 of 94 minutes on the 13th and 94 of 94 on the 14th.", "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 972 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Tuesday 14 July.", "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": "1981-07-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-14", "confidence": "boundary" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Tuesday 14 July. Trayodaśī runs from 19:38 on Mon 13 Jul to 21:24 on Tue 14 Jul and covers all of pradoṣa that evening. It also reaches the previous evening for 16 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/cali/festivals/1981/pradosha-vrata?on=1981-07-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23078, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 } }, "kaala": "udaya-3", "days": [ { "local_date": "1981-07-16", "window": { "start": { "local": "1981-07-16T06:03:19-05:00", "utc": "1981-07-16T11:03:19Z", "ms": 364129398573.45636 }, "end": { "local": "1981-07-16T08:30:48-05:00", "utc": "1981-07-16T13:30:48Z", "ms": 364138248327.1194 } }, "covered_min": 147, "window_min": 147, "qualifies": true }, { "local_date": "1981-07-17", "window": { "start": { "local": "1981-07-17T06:03:27-05:00", "utc": "1981-07-17T11:03:27Z", "ms": 364215806803.2583 }, "end": { "local": "1981-07-17T08:30:55-05:00", "utc": "1981-07-17T13:30:55Z", "ms": 364224655290.7165 } }, "covered_min": 0, "window_min": 147, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul.", "fact": "1981-07-16T03:45:33Z → 1981-07-17T04:38:49Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:03–08:31 on the 16th, 06:03–08:31 on the 17th.", "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 147 of 147 minutes on the 16th and 0 of 147 on the 17th.", "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 23078 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Cali, 1981: Thursday 16 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": "1981-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-16", "confidence": "determinate" } ], "quote": "In Cali, Vyāsa Pūjā 1981 falls on Thursday 16 July. Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36575, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-07-15", "window": { "start": { "local": "1981-07-15T11:47:57-05:00", "utc": "1981-07-15T16:47:57Z", "ms": 364063677372.82275 }, "end": { "local": "1981-07-15T12:35:57-05:00", "utc": "1981-07-15T17:35:57Z", "ms": 364066557372.82275 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-07-16", "window": { "start": { "local": "1981-07-16T11:48:03-05:00", "utc": "1981-07-16T16:48:03Z", "ms": 364150082957.6139 }, "end": { "local": "1981-07-16T12:36:03-05:00", "utc": "1981-07-16T17:36:03Z", "ms": 364152962957.6139 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul.", "fact": "1981-07-16T03:45:33Z → 1981-07-17T04:38:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 15th, 11:48–12:36 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36575 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Cali, 1981: Thursday 16 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": "1981-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-16", "confidence": "determinate" } ], "quote": "In Cali, Guru Pūrṇimā 1981 falls on Thursday 16 July. Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15888, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 } }, "kaala": "sayahna", "days": [ { "local_date": "1981-07-15", "window": { "start": { "local": "1981-07-15T15:53:14-05:00", "utc": "1981-07-15T20:53:14Z", "ms": 364078393841.6953 }, "end": { "local": "1981-07-15T18:20:45-05:00", "utc": "1981-07-15T23:20:45Z", "ms": 364087244820.9437 } }, "covered_min": 0, "window_min": 148, "qualifies": false }, { "local_date": "1981-07-16", "window": { "start": { "local": "1981-07-16T15:53:18-05:00", "utc": "1981-07-16T20:53:18Z", "ms": 364164797588.1084 }, "end": { "local": "1981-07-16T18:20:47-05:00", "utc": "1981-07-16T23:20:47Z", "ms": 364173647341.7714 } }, "covered_min": 147, "window_min": 147, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul.", "fact": "1981-07-16T03:45:33Z → 1981-07-17T04:38:49Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:53–18:21 on the 15th, 15:53–18:21 on the 16th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 148 minutes on the 15th and 147 of 147 on the 16th.", "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 15888 s" }, { "step": "ruling", "text": "Kokilā Vrata, Cali, 1981: Thursday 16 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": "1981-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-16", "confidence": "determinate" } ], "quote": "In Cali, Kokilā Vrata 1981 falls on Thursday 16 July. Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10267, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1981-07-15T22:45:33-05:00", "utc": "1981-07-16T03:45:33Z", "ms": 364103132563.0618 }, "end": { "local": "1981-07-16T23:38:49-05:00", "utc": "1981-07-17T04:38:49Z", "ms": 364192729254.3843 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-07-15", "window": { "start": { "local": "1981-07-15T18:20:45-05:00", "utc": "1981-07-15T23:20:45Z", "ms": 364087244820.9437 }, "end": { "local": "1981-07-15T19:54:25-05:00", "utc": "1981-07-16T00:54:25Z", "ms": 364092865321.27875 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1981-07-16", "window": { "start": { "local": "1981-07-16T18:20:47-05:00", "utc": "1981-07-16T23:20:47Z", "ms": 364173647341.7714 }, "end": { "local": "1981-07-16T19:54:29-05:00", "utc": "1981-07-17T00:54:29Z", "ms": 364179268603.303 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul.", "fact": "1981-07-16T03:45:33Z → 1981-07-17T04:38:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:54 on the 15th, 18:21–19:54 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 94 minutes on the 15th and 94 of 94 on the 16th.", "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 10267 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Cali, 1981: Thursday 16 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": "1981-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-16", "confidence": "determinate" } ], "quote": "In Cali, Śiva Śayanotsava 1981 falls on Thursday 16 July. Pūrṇimā runs from 22:46 on Wed 15 Jul to 23:39 on Thu 16 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15062, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1981-07-18T00:03:35-05:00", "utc": "1981-07-18T05:03:35Z", "ms": 364280615373.0386 }, "end": { "local": "1981-07-19T00:00:26-05:00", "utc": "1981-07-19T05:00:26Z", "ms": 364366825869.55554 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-07-18T00:03:35-05:00", "utc": "1981-07-18T05:03:35Z", "ms": 364280615373.0386 }, "end": { "local": "1981-07-19T00:00:26-05:00", "utc": "1981-07-19T05:00:26Z", "ms": 364366825869.55554 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-07-17", "window": { "start": { "local": "1981-07-17T18:58:33-05:00", "utc": "1981-07-17T23:58:33Z", "ms": 364262313042.86304 }, "end": { "local": "1981-07-17T18:58:33-05:00", "utc": "1981-07-17T23:58:33Z", "ms": 364262313042.86304 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-07-18", "window": { "start": { "local": "1981-07-18T19:49:24-05:00", "utc": "1981-07-19T00:49:24Z", "ms": 364351763534.8392 }, "end": { "local": "1981-07-18T19:49:24-05:00", "utc": "1981-07-19T00:49:24Z", "ms": 364351763534.8392 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 00:04 on Sat 18 Jul to 00:00 on Sun 19 Jul.", "fact": "1981-07-18T05:03:35Z → 1981-07-19T05:00:26Z" }, { "step": "kaala", "text": "Moonrise is at 18:59 on the 17th and 19:49 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 17th and is on the 18th.", "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 15062 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Cali, 1981: Saturday 18 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": "1981-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-18", "confidence": "determinate" } ], "quote": "In Cali, Aśūnya Śayana Vrata (Āṣāḍha) 1981 falls on Saturday 18 July. Dvitīyā runs from 00:04 on Sat 18 Jul to 00:00 on Sun 19 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-07-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4094, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-07-19T23:30:41-05:00", "utc": "1981-07-20T04:30:41Z", "ms": 364451441364.97534 }, "end": { "local": "1981-07-20T22:36:07-05:00", "utc": "1981-07-21T03:36:07Z", "ms": 364534566888.55975 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-07-19T23:30:41-05:00", "utc": "1981-07-20T04:30:41Z", "ms": 364451441364.97534 }, "end": { "local": "1981-07-20T22:36:07-05:00", "utc": "1981-07-21T03:36:07Z", "ms": 364534566888.55975 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-07-19", "window": { "start": { "local": "1981-07-19T20:39:10-05:00", "utc": "1981-07-20T01:39:10Z", "ms": 364441150326.34686 }, "end": { "local": "1981-07-19T20:39:10-05:00", "utc": "1981-07-20T01:39:10Z", "ms": 364441150326.34686 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-07-20", "window": { "start": { "local": "1981-07-20T21:27:53-05:00", "utc": "1981-07-21T02:27:53Z", "ms": 364530473324.6902 }, "end": { "local": "1981-07-20T21:27:53-05:00", "utc": "1981-07-21T02:27:53Z", "ms": 364530473324.6902 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:31 on Sun 19 Jul to 22:36 on Mon 20 Jul.", "fact": "1981-07-20T04:30:41Z → 1981-07-21T03:36:07Z" }, { "step": "kaala", "text": "Moonrise is at 20:39 on the 19th and 21:28 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 19th and is on the 20th.", "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 4094 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Monday 20 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": "1981-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-20", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Monday 20 July. Caturthī runs from 23:31 on Sun 19 Jul to 22:36 on Mon 20 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-07-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-07-27", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6910, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-07-26T10:35:38-05:00", "utc": "1981-07-26T15:35:38Z", "ms": 365009738348.60425 }, "end": { "local": "1981-07-27T07:59:34-05:00", "utc": "1981-07-27T12:59:34Z", "ms": 365086773837.5726 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-07-26T10:35:38-05:00", "utc": "1981-07-26T15:35:38Z", "ms": 365009738348.60425 }, "end": { "local": "1981-07-27T07:59:34-05:00", "utc": "1981-07-27T12:59:34Z", "ms": 365086773837.5726 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-07-26", "window": { "start": { "local": "1981-07-26T06:04:21-05:00", "utc": "1981-07-26T11:04:21Z", "ms": 364993460647.9865 }, "end": { "local": "1981-07-26T06:04:21-05:00", "utc": "1981-07-26T11:04:21Z", "ms": 364993460647.9865 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-07-27", "window": { "start": { "local": "1981-07-27T06:04:24-05:00", "utc": "1981-07-27T11:04:24Z", "ms": 365079864249.19696 }, "end": { "local": "1981-07-27T06:04:24-05:00", "utc": "1981-07-27T11:04:24Z", "ms": 365079864249.19696 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:36 on Sun 26 Jul to 08:00 on Mon 27 Jul.", "fact": "1981-07-26T15:35:38Z → 1981-07-27T12:59:34Z" }, { "step": "kaala", "text": "Sunrise is at 06:04 on the 26th and 06:04 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "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 6910 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Cali, 1981: Monday 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": "1981-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-27", "confidence": "determinate" } ], "quote": "In Cali, Kāmikā Ekādaśī 1981 falls on Monday 27 July. Ekādaśī runs from 10:36 on Sun 26 Jul to 08:00 on Mon 27 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-07-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-07-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25425, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-07-28T05:25:06-05:00", "utc": "1981-07-28T10:25:06Z", "ms": 365163905502.4758 }, "end": { "local": "1981-07-29T02:58:05-05:00", "utc": "1981-07-29T07:58:05Z", "ms": 365241485342.8578 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-07-28T05:25:06-05:00", "utc": "1981-07-28T10:25:06Z", "ms": 365163905502.4758 }, "end": { "local": "1981-07-29T02:58:05-05:00", "utc": "1981-07-29T07:58:05Z", "ms": 365241485342.8578 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-07-27", "window": { "start": { "local": "1981-07-27T18:20:33-05:00", "utc": "1981-07-27T23:20:33Z", "ms": 365124033132.7957 }, "end": { "local": "1981-07-27T19:54:24-05:00", "utc": "1981-07-28T00:54:24Z", "ms": 365129664361.1043 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1981-07-28", "window": { "start": { "local": "1981-07-28T18:20:28-05:00", "utc": "1981-07-28T23:20:28Z", "ms": 365210427938.6008 }, "end": { "local": "1981-07-28T19:54:20-05:00", "utc": "1981-07-29T00:54:20Z", "ms": 365216060203.6624 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:25 on Tue 28 Jul to 02:58 on Wed 29 Jul.", "fact": "1981-07-28T10:25:06Z → 1981-07-29T07:58:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:54 on the 27th, 18:20–19:54 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 0 of 94 minutes on the 27th and 94 of 94 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 25425 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Tuesday 28 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": "1981-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-28", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Tuesday 28 July. Trayodaśī runs from 05:25 on Tue 28 Jul to 02:58 on Wed 29 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-07-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-07-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-07-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 505, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-07-29T02:58:05-05:00", "utc": "1981-07-29T07:58:05Z", "ms": 365241485342.8578 }, "end": { "local": "1981-07-30T00:44:52-05:00", "utc": "1981-07-30T05:44:52Z", "ms": 365319892038.3763 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-07-29T02:58:05-05:00", "utc": "1981-07-29T07:58:05Z", "ms": 365241485342.8578 }, "end": { "local": "1981-07-30T00:44:52-05:00", "utc": "1981-07-30T05:44:52Z", "ms": 365319892038.3763 } }, "kaala": "nishita", "days": [ { "local_date": "1981-07-28", "window": { "start": { "local": "1981-07-28T23:48:29-05:00", "utc": "1981-07-29T04:48:29Z", "ms": 365230108932.5818 }, "end": { "local": "1981-07-29T00:36:29-05:00", "utc": "1981-07-29T05:36:29Z", "ms": 365232988932.5818 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-07-29", "window": { "start": { "local": "1981-07-29T23:48:27-05:00", "utc": "1981-07-30T04:48:27Z", "ms": 365316507030.4326 }, "end": { "local": "1981-07-30T00:36:27-05:00", "utc": "1981-07-30T05:36:27Z", "ms": 365319387030.4326 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:58 on Wed 29 Jul to 00:45 on Thu 30 Jul.", "fact": "1981-07-29T07:58:05Z → 1981-07-30T05:44:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:48–00:36 on the 28th, 23:48–00:36 on the 29th.", "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 28th and 48 of 48 on the 29th.", "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 505 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Wednesday 29 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": "1981-07-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-07-29", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Wednesday 29 July. Caturdaśī runs from 02:58 on Wed 29 Jul to 00:45 on Thu 30 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-07-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27526, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-08-01T20:31:54-05:00", "utc": "1981-08-02T01:31:54Z", "ms": 365563913761.8899 }, "end": { "local": "1981-08-02T20:15:00-05:00", "utc": "1981-08-03T01:15:00Z", "ms": 365649299747.0924 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-01T20:31:54-05:00", "utc": "1981-08-02T01:31:54Z", "ms": 365563913761.8899 }, "end": { "local": "1981-08-02T20:15:00-05:00", "utc": "1981-08-03T01:15:00Z", "ms": 365649299747.0924 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-01", "window": { "start": { "local": "1981-08-01T11:48:17-05:00", "utc": "1981-08-01T16:48:17Z", "ms": 365532497467.96423 }, "end": { "local": "1981-08-01T12:36:17-05:00", "utc": "1981-08-01T17:36:17Z", "ms": 365535377467.96423 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-08-02", "window": { "start": { "local": "1981-08-02T11:48:13-05:00", "utc": "1981-08-02T16:48:13Z", "ms": 365618893402.23566 }, "end": { "local": "1981-08-02T12:36:13-05:00", "utc": "1981-08-02T17:36:13Z", "ms": 365621773402.23566 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:32 on Sat 1 Aug to 20:15 on Sun 2 Aug.", "fact": "1981-08-02T01:31:54Z → 1981-08-03T01:15:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 1st, 11:48–12:36 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 27526 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Cali, 1981: Sunday 2 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": "1981-08-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-02", "confidence": "determinate" } ], "quote": "In Cali, Madhusravā Tṛtīyā (Hariyali Teej) 1981 falls on Sunday 2 August. Tṛtīyā runs from 20:32 on Sat 1 Aug to 20:15 on Sun 2 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-08-03", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27526, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-08-02T20:15:00-05:00", "utc": "1981-08-03T01:15:00Z", "ms": 365649299747.0924 }, "end": { "local": "1981-08-03T20:37:25-05:00", "utc": "1981-08-04T01:37:25Z", "ms": 365737045011.0882 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-02T20:15:00-05:00", "utc": "1981-08-03T01:15:00Z", "ms": 365649299747.0924 }, "end": { "local": "1981-08-03T20:37:25-05:00", "utc": "1981-08-04T01:37:25Z", "ms": 365737045011.0882 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-02", "window": { "start": { "local": "1981-08-02T11:48:13-05:00", "utc": "1981-08-02T16:48:13Z", "ms": 365618893402.23566 }, "end": { "local": "1981-08-02T12:36:13-05:00", "utc": "1981-08-02T17:36:13Z", "ms": 365621773402.23566 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-08-03", "window": { "start": { "local": "1981-08-03T11:48:09-05:00", "utc": "1981-08-03T16:48:09Z", "ms": 365705288720.63324 }, "end": { "local": "1981-08-03T12:36:09-05:00", "utc": "1981-08-03T17:36:09Z", "ms": 365708168720.63324 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:15 on Sun 2 Aug to 20:37 on Mon 3 Aug.", "fact": "1981-08-03T01:15:00Z → 1981-08-04T01:37:25Z" }, { "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": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27526 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Monday 3 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": "1981-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-03", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Monday 3 August. Caturthī runs from 20:15 on Sun 2 Aug to 20:37 on Mon 3 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-08-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28876, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-08-03T20:37:25-05:00", "utc": "1981-08-04T01:37:25Z", "ms": 365737045011.0882 }, "end": { "local": "1981-08-04T21:38:41-05:00", "utc": "1981-08-05T02:38:41Z", "ms": 365827120732.7763 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-03T20:37:25-05:00", "utc": "1981-08-04T01:37:25Z", "ms": 365737045011.0882 }, "end": { "local": "1981-08-04T21:38:41-05:00", "utc": "1981-08-05T02:38:41Z", "ms": 365827120732.7763 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-03", "window": { "start": { "local": "1981-08-03T11:48:09-05:00", "utc": "1981-08-03T16:48:09Z", "ms": 365705288720.63324 }, "end": { "local": "1981-08-03T12:36:09-05:00", "utc": "1981-08-03T17:36:09Z", "ms": 365708168720.63324 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-08-04", "window": { "start": { "local": "1981-08-04T11:48:03-05:00", "utc": "1981-08-04T16:48:03Z", "ms": 365791683422.4077 }, "end": { "local": "1981-08-04T12:36:03-05:00", "utc": "1981-08-04T17:36:03Z", "ms": 365794563422.4077 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:37 on Mon 3 Aug to 21:39 on Tue 4 Aug.", "fact": "1981-08-04T01:37:25Z → 1981-08-05T02:38:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 3rd, 11:48–12:36 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "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 28876 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Cali, 1981: Tuesday 4 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": "1981-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-04", "confidence": "determinate" } ], "quote": "In Cali, Nāga Pañcamī 1981 falls on Tuesday 4 August. Pañcamī runs from 20:37 on Mon 3 Aug to 21:39 on Tue 4 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-08-11", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7521, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-08-10T08:09:39-05:00", "utc": "1981-08-10T13:09:39Z", "ms": 366296979396.62054 }, "end": { "local": "1981-08-11T09:58:49-05:00", "utc": "1981-08-11T14:58:49Z", "ms": 366389928715.32263 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-10T08:09:39-05:00", "utc": "1981-08-10T13:09:39Z", "ms": 366296979396.62054 }, "end": { "local": "1981-08-11T09:58:49-05:00", "utc": "1981-08-11T14:58:49Z", "ms": 366389928715.32263 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-08-10", "window": { "start": { "local": "1981-08-10T06:04:19-05:00", "utc": "1981-08-10T11:04:19Z", "ms": 366289458528.7871 }, "end": { "local": "1981-08-10T06:04:19-05:00", "utc": "1981-08-10T11:04:19Z", "ms": 366289458528.7871 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-08-11", "window": { "start": { "local": "1981-08-11T06:04:14-05:00", "utc": "1981-08-11T11:04:14Z", "ms": 366375854012.93274 }, "end": { "local": "1981-08-11T06:04:14-05:00", "utc": "1981-08-11T11:04:14Z", "ms": 366375854012.93274 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:10 on Mon 10 Aug to 09:59 on Tue 11 Aug.", "fact": "1981-08-10T13:09:39Z → 1981-08-11T14:58:49Z" }, { "step": "kaala", "text": "Sunrise is at 06:04 on the 10th and 06:04 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7521 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Cali, 1981: Tuesday 11 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": "1981-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-11", "confidence": "determinate" } ], "quote": "In Cali, Putradā Ekādaśī 1981 falls on Tuesday 11 August. Ekādaśī runs from 08:10 on Mon 10 Aug to 09:59 on Tue 11 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1780, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-08-11T09:58:49-05:00", "utc": "1981-08-11T14:58:49Z", "ms": 366389928715.32263 }, "end": { "local": "1981-08-12T11:17:19-05:00", "utc": "1981-08-12T16:17:19Z", "ms": 366481039001.4711 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-11T09:58:49-05:00", "utc": "1981-08-11T14:58:49Z", "ms": 366389928715.32263 }, "end": { "local": "1981-08-12T11:17:19-05:00", "utc": "1981-08-12T16:17:19Z", "ms": 366481039001.4711 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-11", "window": { "start": { "local": "1981-08-11T11:47:09-05:00", "utc": "1981-08-11T16:47:09Z", "ms": 366396429303.8505 }, "end": { "local": "1981-08-11T12:35:09-05:00", "utc": "1981-08-11T17:35:09Z", "ms": 366399309303.8505 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-12", "window": { "start": { "local": "1981-08-12T11:46:59-05:00", "utc": "1981-08-12T16:46:59Z", "ms": 366482819210.31757 }, "end": { "local": "1981-08-12T12:34:59-05:00", "utc": "1981-08-12T17:34:59Z", "ms": 366485699210.31757 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:59 on Tue 11 Aug to 11:17 on Wed 12 Aug.", "fact": "1981-08-11T14:58:49Z → 1981-08-12T16:17:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 11th, 11:47–12:35 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1780 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Cali, 1981: Tuesday 11 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": "1981-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-11", "confidence": "determinate" } ], "quote": "In Cali, Dāmodara Dvādaśī 1981 falls on Tuesday 11 August. Dvādaśī runs from 09:59 on Tue 11 Aug to 11:17 on Wed 12 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-08-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22640, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-08-12T11:17:19-05:00", "utc": "1981-08-12T16:17:19Z", "ms": 366481039001.4711 }, "end": { "local": "1981-08-13T12:00:14-05:00", "utc": "1981-08-13T17:00:14Z", "ms": 366570014091.72876 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-12T11:17:19-05:00", "utc": "1981-08-12T16:17:19Z", "ms": 366481039001.4711 }, "end": { "local": "1981-08-13T12:00:14-05:00", "utc": "1981-08-13T17:00:14Z", "ms": 366570014091.72876 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-08-12", "window": { "start": { "local": "1981-08-12T18:17:49-05:00", "utc": "1981-08-12T23:17:49Z", "ms": 366506269454.25226 }, "end": { "local": "1981-08-12T19:51:59-05:00", "utc": "1981-08-13T00:51:59Z", "ms": 366511919313.3563 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-08-13", "window": { "start": { "local": "1981-08-13T18:17:34-05:00", "utc": "1981-08-13T23:17:34Z", "ms": 366592653707.6041 }, "end": { "local": "1981-08-13T19:51:45-05:00", "utc": "1981-08-14T00:51:45Z", "ms": 366598304855.3874 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:17 on Wed 12 Aug to 12:00 on Thu 13 Aug.", "fact": "1981-08-12T16:17:19Z → 1981-08-13T17:00:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:52 on the 12th, 18:18–19:52 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 12th and 0 of 94 on the 13th.", "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 22640 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Wednesday 12 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": "1981-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-12", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Wednesday 12 August. Trayodaśī runs from 11:17 on Wed 12 Aug to 12:00 on Thu 13 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-08-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 19967, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-08-14T12:06:09-05:00", "utc": "1981-08-14T17:06:09Z", "ms": 366656769467.0725 }, "end": { "local": "1981-08-15T11:36:37-05:00", "utc": "1981-08-15T16:36:37Z", "ms": 366741397298.87384 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1981-08-14T23:55:38-05:00", "utc": "1981-08-15T04:55:38Z", "ms": 366699337931.54834 }, "end": { "local": "1981-08-15T11:36:37-05:00", "utc": "1981-08-15T16:36:37Z", "ms": 366741397298.87384 } }, "kaala": "day", "days": [ { "local_date": "1981-08-14", "window": { "start": { "local": "1981-08-14T06:03:57-05:00", "utc": "1981-08-14T11:03:57Z", "ms": 366635037315.97876 }, "end": { "local": "1981-08-15T06:03:51-05:00", "utc": "1981-08-15T11:03:51Z", "ms": 366721430732.49164 } }, "covered_min": 368, "window_min": 1440, "qualifies": true }, { "local_date": "1981-08-15", "window": { "start": { "local": "1981-08-15T06:03:51-05:00", "utc": "1981-08-15T11:03:51Z", "ms": 366721430732.49164 }, "end": { "local": "1981-08-16T06:03:44-05:00", "utc": "1981-08-16T11:03:44Z", "ms": 366807823658.9269 } }, "covered_min": 333, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:06 on Fri 14 Aug to 11:37 on Sat 15 Aug. Its second half begins at 23:56 on Fri 14 Aug.", "fact": "1981-08-14T17:06:09Z → 1981-08-15T16:36:37Z · second half from 1981-08-15T04:55:38Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:04 on the 14th, and from 06:04 on the 15th.", "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 368 of 1440 minutes on the 14th and 333 of 1440 on the 15th.", "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 19967 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Cali, 1981: Friday 14 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": "1981-08-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-14", "confidence": "boundary" } ], "quote": "In Cali, Rakṣā Bandhana (Rakhi) 1981 falls on Friday 14 August. The second half of Pūrṇimā runs from 23:56 on Fri 14 Aug to 11:37 on Sat 15 Aug and falls on two days: 368 minutes of it on the 14th, 333 on the 15th; 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/cali/festivals/1981/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": "/cali/festivals/1981/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 588, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-08-14T12:06:09-05:00", "utc": "1981-08-14T17:06:09Z", "ms": 366656769467.0725 }, "end": { "local": "1981-08-15T11:36:37-05:00", "utc": "1981-08-15T16:36:37Z", "ms": 366741397298.87384 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1981-08-14T12:06:09-05:00", "utc": "1981-08-14T17:06:09Z", "ms": 366656769467.0725 }, "end": { "local": "1981-08-15T11:36:37-05:00", "utc": "1981-08-15T16:36:37Z", "ms": 366741397298.87384 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-14", "window": { "start": { "local": "1981-08-14T11:46:37-05:00", "utc": "1981-08-14T16:46:37Z", "ms": 366655597342.255 }, "end": { "local": "1981-08-14T12:34:37-05:00", "utc": "1981-08-14T17:34:37Z", "ms": 366658477342.255 } }, "covered_min": 28, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-15", "window": { "start": { "local": "1981-08-15T11:46:26-05:00", "utc": "1981-08-15T16:46:26Z", "ms": 366741985592.12744 }, "end": { "local": "1981-08-15T12:34:26-05:00", "utc": "1981-08-15T17:34:26Z", "ms": 366744865592.12744 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:06 on Fri 14 Aug to 11:37 on Sat 15 Aug.", "fact": "1981-08-14T17:06:09Z → 1981-08-15T16:36:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 14th, 11:46–12:34 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 28 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 588 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Cali, 1981: Friday 14 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": "1981-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-14", "confidence": "boundary" } ], "quote": "In Cali, Ṛṣi Tarpaṇa 1981 falls on Friday 14 August. Pūrṇimā runs from 12:06 on Fri 14 Aug to 11:37 on Sat 15 Aug and covers 28 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31663, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1981-08-16T10:35:19-05:00", "utc": "1981-08-16T15:35:19Z", "ms": 366824119214.3267 }, "end": { "local": "1981-08-17T09:07:19-05:00", "utc": "1981-08-17T14:07:19Z", "ms": 366905238745.8564 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-16T10:35:19-05:00", "utc": "1981-08-16T15:35:19Z", "ms": 366824119214.3267 }, "end": { "local": "1981-08-17T09:07:19-05:00", "utc": "1981-08-17T14:07:19Z", "ms": 366905238745.8564 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-08-16", "window": { "start": { "local": "1981-08-16T19:23:02-05:00", "utc": "1981-08-17T00:23:02Z", "ms": 366855781907.68634 }, "end": { "local": "1981-08-16T19:23:02-05:00", "utc": "1981-08-17T00:23:02Z", "ms": 366855781907.68634 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-08-17", "window": { "start": { "local": "1981-08-17T20:12:20-05:00", "utc": "1981-08-18T01:12:20Z", "ms": 366945140201.1141 }, "end": { "local": "1981-08-17T20:12:20-05:00", "utc": "1981-08-18T01:12:20Z", "ms": 366945140201.1141 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:35 on Sun 16 Aug to 09:07 on Mon 17 Aug.", "fact": "1981-08-16T15:35:19Z → 1981-08-17T14:07:19Z" }, { "step": "kaala", "text": "Moonrise is at 19:23 on the 16th and 20:12 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 16th and is not on the 17th.", "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 31663 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Cali, 1981: Sunday 16 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": "1981-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-16", "confidence": "determinate" } ], "quote": "In Cali, Aśūnya Śayana Vrata 1981 falls on Sunday 16 August. Dvitīyā runs from 10:35 on Sun 16 Aug to 09:07 on Mon 17 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9522, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-08-17T09:07:19-05:00", "utc": "1981-08-17T14:07:19Z", "ms": 366905238745.8564 }, "end": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-17T09:07:19-05:00", "utc": "1981-08-17T14:07:19Z", "ms": 366905238745.8564 }, "end": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-17", "window": { "start": { "local": "1981-08-17T11:46:01-05:00", "utc": "1981-08-17T16:46:01Z", "ms": 366914760528.1937 }, "end": { "local": "1981-08-17T12:34:01-05:00", "utc": "1981-08-17T17:34:01Z", "ms": 366917640528.1937 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-18", "window": { "start": { "local": "1981-08-18T11:45:47-05:00", "utc": "1981-08-18T16:45:47Z", "ms": 367001147244.03284 }, "end": { "local": "1981-08-18T12:33:47-05:00", "utc": "1981-08-18T17:33:47Z", "ms": 367004027244.03284 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:07 on Mon 17 Aug to 07:18 on Tue 18 Aug.", "fact": "1981-08-17T14:07:19Z → 1981-08-18T12:18:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 17th, 11:46–12:34 on the 18th.", "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 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: paraviddha → only-day · margin 9522 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Cali, 1981: Monday 17 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kajjali-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 3 Kajjali trtiya, (paraviddha), Angaveta trtiya (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-17", "confidence": "determinate" } ], "quote": "In Cali, Kajjalī Tṛtīyā (Kajari Teej) 1981 falls on Monday 17 August. Tṛtīyā runs from 09:07 on Mon 17 Aug to 07:18 on Tue 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30675, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 }, "end": { "local": "1981-08-19T05:14:14-05:00", "utc": "1981-08-19T10:14:14Z", "ms": 367064053604.26855 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 }, "end": { "local": "1981-08-19T05:14:14-05:00", "utc": "1981-08-19T10:14:14Z", "ms": 367064053604.26855 } }, "kaala": "sayahna", "days": [ { "local_date": "1981-08-18", "window": { "start": { "local": "1981-08-18T15:49:35-05:00", "utc": "1981-08-18T20:49:35Z", "ms": 367015774734.4434 }, "end": { "local": "1981-08-18T18:16:06-05:00", "utc": "1981-08-18T23:16:06Z", "ms": 367024566394.7171 } }, "covered_min": 147, "window_min": 147, "qualifies": true }, { "local_date": "1981-08-19", "window": { "start": { "local": "1981-08-19T15:49:18-05:00", "utc": "1981-08-19T20:49:18Z", "ms": 367102157788.89636 }, "end": { "local": "1981-08-19T18:15:47-05:00", "utc": "1981-08-19T23:15:47Z", "ms": 367110947328.9691 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:18 on Tue 18 Aug to 05:14 on Wed 19 Aug.", "fact": "1981-08-18T12:18:20Z → 1981-08-19T10:14:14Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:50–18:16 on the 18th, 15:49–18:16 on the 19th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 147 of 147 minutes on the 18th and 0 of 146 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30675 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Cali, 1981: Tuesday 18 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bahula-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day)." } ], "kaala": "sayahna", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-18", "confidence": "determinate" } ], "quote": "In Cali, Bahulā Caturthī 1981 falls on Tuesday 18 August. Caturthī runs from 07:18 on Tue 18 Aug to 05:14 on Wed 19 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-08-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29578, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 }, "end": { "local": "1981-08-19T05:14:14-05:00", "utc": "1981-08-19T10:14:14Z", "ms": 367064053604.26855 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-18T07:18:20-05:00", "utc": "1981-08-18T12:18:20Z", "ms": 366985099831.8458 }, "end": { "local": "1981-08-19T05:14:14-05:00", "utc": "1981-08-19T10:14:14Z", "ms": 367064053604.26855 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-08-17", "window": { "start": { "local": "1981-08-17T20:12:20-05:00", "utc": "1981-08-18T01:12:20Z", "ms": 366945140201.1141 }, "end": { "local": "1981-08-17T20:12:20-05:00", "utc": "1981-08-18T01:12:20Z", "ms": 366945140201.1141 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-08-18", "window": { "start": { "local": "1981-08-18T21:01:16-05:00", "utc": "1981-08-19T02:01:16Z", "ms": 367034475839.3676 }, "end": { "local": "1981-08-18T21:01:16-05:00", "utc": "1981-08-19T02:01:16Z", "ms": 367034475839.3676 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:18 on Tue 18 Aug to 05:14 on Wed 19 Aug.", "fact": "1981-08-18T12:18:20Z → 1981-08-19T10:14:14Z" }, { "step": "kaala", "text": "Moonrise is at 20:12 on the 17th and 21:01 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 17th and is on the 18th.", "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 29578 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Tuesday 18 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": "1981-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-18", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Tuesday 18 August. Caturthī runs from 07:18 on Tue 18 Aug to 05:14 on Wed 19 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-08-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31486, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-08-20T03:00:34-05:00", "utc": "1981-08-20T08:00:34Z", "ms": 367142433638.81696 }, "end": { "local": "1981-08-21T00:42:19-05:00", "utc": "1981-08-21T05:42:19Z", "ms": 367220539318.8948 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-20T03:00:34-05:00", "utc": "1981-08-20T08:00:34Z", "ms": 367142433638.81696 }, "end": { "local": "1981-08-21T00:42:19-05:00", "utc": "1981-08-21T05:42:19Z", "ms": 367220539318.8948 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-20", "window": { "start": { "local": "1981-08-20T11:45:19-05:00", "utc": "1981-08-20T16:45:19Z", "ms": 367173919247.7252 }, "end": { "local": "1981-08-20T12:33:19-05:00", "utc": "1981-08-20T17:33:19Z", "ms": 367176799247.7252 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-21", "window": { "start": { "local": "1981-08-21T11:45:05-05:00", "utc": "1981-08-21T16:45:05Z", "ms": 367260304565.7391 }, "end": { "local": "1981-08-21T12:33:05-05:00", "utc": "1981-08-21T17:33:05Z", "ms": 367263184565.7391 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:01 on Thu 20 Aug to 00:42 on Fri 21 Aug.", "fact": "1981-08-20T08:00:34Z → 1981-08-21T05:42:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 20th, 11:45–12:33 on the 21st.", "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 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 31486 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Cali, 1981: Thursday 20 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-20", "confidence": "determinate" } ], "quote": "In Cali, Hala Ṣaṣṭhī 1981 falls on Thursday 20 August. Ṣaṣṭhī runs from 03:01 on Thu 20 Aug to 00:42 on Fri 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4873, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-08-21T22:23:47-05:00", "utc": "1981-08-22T03:23:47Z", "ms": 367298627150.3977 }, "end": { "local": "1981-08-22T20:08:30-05:00", "utc": "1981-08-23T01:08:30Z", "ms": 367376910033.1884 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-21T22:23:47-05:00", "utc": "1981-08-22T03:23:47Z", "ms": 367298627150.3977 }, "end": { "local": "1981-08-22T20:08:30-05:00", "utc": "1981-08-23T01:08:30Z", "ms": 367376910033.1884 } }, "kaala": "nishita", "days": [ { "local_date": "1981-08-21", "window": { "start": { "local": "1981-08-21T23:45:00-05:00", "utc": "1981-08-22T04:45:00Z", "ms": 367303499699.1109 }, "end": { "local": "1981-08-22T00:33:00-05:00", "utc": "1981-08-22T05:33:00Z", "ms": 367306379699.1109 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-22", "window": { "start": { "local": "1981-08-22T23:44:44-05:00", "utc": "1981-08-23T04:44:44Z", "ms": 367389884381.77026 }, "end": { "local": "1981-08-23T00:32:44-05:00", "utc": "1981-08-23T05:32:44Z", "ms": 367392764381.77026 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 22:24 on Fri 21 Aug to 20:09 on Sat 22 Aug.", "fact": "1981-08-22T03:23:47Z → 1981-08-23T01:08:30Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 21st, 23:45–00:33 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. 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 night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4873 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Cali, 1981: Friday 21 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-21", "confidence": "determinate" } ], "quote": "In Cali, Janmāṣṭamī 1981 falls on Friday 21 August. Aṣṭamī runs from 22:24 on Fri 21 Aug to 20:09 on Sat 22 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35443, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-08-21T00:42:19-05:00", "utc": "1981-08-21T05:42:19Z", "ms": 367220539318.8948 }, "end": { "local": "1981-08-21T22:23:47-05:00", "utc": "1981-08-22T03:23:47Z", "ms": 367298627150.3977 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-21T00:42:19-05:00", "utc": "1981-08-21T05:42:19Z", "ms": 367220539318.8948 }, "end": { "local": "1981-08-21T22:23:47-05:00", "utc": "1981-08-22T03:23:47Z", "ms": 367298627150.3977 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-20", "window": { "start": { "local": "1981-08-20T11:45:19-05:00", "utc": "1981-08-20T16:45:19Z", "ms": 367173919247.7252 }, "end": { "local": "1981-08-20T12:33:19-05:00", "utc": "1981-08-20T17:33:19Z", "ms": 367176799247.7252 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-08-21", "window": { "start": { "local": "1981-08-21T11:45:05-05:00", "utc": "1981-08-21T16:45:05Z", "ms": 367260304565.7391 }, "end": { "local": "1981-08-21T12:33:05-05:00", "utc": "1981-08-21T17:33:05Z", "ms": 367263184565.7391 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:42 on Fri 21 Aug to 22:24 on Fri 21 Aug.", "fact": "1981-08-21T05:42:19Z → 1981-08-22T03:23:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 20th, 11:45–12:33 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 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 35443 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Cali, 1981: Friday 21 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-21", "confidence": "determinate" } ], "quote": "In Cali, Śītalā Saptamī 1981 falls on Friday 21 August. Saptamī runs from 00:42 on Fri 21 Aug to 22:24 on Fri 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-08-25", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29251, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-08-24T15:59:02-05:00", "utc": "1981-08-24T20:59:02Z", "ms": 367534742357.5245 }, "end": { "local": "1981-08-25T14:09:51-05:00", "utc": "1981-08-25T19:09:51Z", "ms": 367614591052.00726 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-24T15:59:02-05:00", "utc": "1981-08-24T20:59:02Z", "ms": 367534742357.5245 }, "end": { "local": "1981-08-25T14:09:51-05:00", "utc": "1981-08-25T19:09:51Z", "ms": 367614591052.00726 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-08-24", "window": { "start": { "local": "1981-08-24T06:02:31-05:00", "utc": "1981-08-24T11:02:31Z", "ms": 367498951023.4803 }, "end": { "local": "1981-08-24T06:02:31-05:00", "utc": "1981-08-24T11:02:31Z", "ms": 367498951023.4803 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-08-25", "window": { "start": { "local": "1981-08-25T06:02:20-05:00", "utc": "1981-08-25T11:02:20Z", "ms": 367585340131.5398 }, "end": { "local": "1981-08-25T06:02:20-05:00", "utc": "1981-08-25T11:02:20Z", "ms": 367585340131.5398 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:59 on Mon 24 Aug to 14:10 on Tue 25 Aug.", "fact": "1981-08-24T20:59:02Z → 1981-08-25T19:09:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:03 on the 24th and 06:02 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29251 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Cali, 1981: Tuesday 25 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": "1981-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-25", "confidence": "determinate" } ], "quote": "In Cali, Ajā Ekādaśī 1981 falls on Tuesday 25 August. Ekādaśī runs from 15:59 on Mon 24 Aug to 14:10 on Tue 25 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-08-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-08-26", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20333, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-08-26T12:34:27-05:00", "utc": "1981-08-26T17:34:27Z", "ms": 367695267497.39154 }, "end": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-26T12:34:27-05:00", "utc": "1981-08-26T17:34:27Z", "ms": 367695267497.39154 }, "end": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-08-26", "window": { "start": { "local": "1981-08-26T18:13:21-05:00", "utc": "1981-08-26T23:13:21Z", "ms": 367715600856.712 }, "end": { "local": "1981-08-26T19:47:50-05:00", "utc": "1981-08-27T00:47:50Z", "ms": 367721269710.73706 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1981-08-27", "window": { "start": { "local": "1981-08-27T18:12:58-05:00", "utc": "1981-08-27T23:12:58Z", "ms": 367801978243.13055 }, "end": { "local": "1981-08-27T19:47:29-05:00", "utc": "1981-08-28T00:47:29Z", "ms": 367807648517.8579 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:34 on Wed 26 Aug to 11:16 on Thu 27 Aug.", "fact": "1981-08-26T17:34:27Z → 1981-08-27T16:15:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:48 on the 26th, 18:13–19:47 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 26th and 0 of 95 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20333 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Wednesday 26 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": "1981-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-26", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Wednesday 26 August. Trayodaśī runs from 12:34 on Wed 26 Aug to 11:16 on Thu 27 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-08-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25026, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 }, "end": { "local": "1981-08-28T10:17:35-05:00", "utc": "1981-08-28T15:17:35Z", "ms": 367859855092.6528 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 }, "end": { "local": "1981-08-28T10:17:35-05:00", "utc": "1981-08-28T15:17:35Z", "ms": 367859855092.6528 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-08-27", "window": { "start": { "local": "1981-08-27T18:12:58-05:00", "utc": "1981-08-27T23:12:58Z", "ms": 367801978243.13055 }, "end": { "local": "1981-08-27T19:47:29-05:00", "utc": "1981-08-28T00:47:29Z", "ms": 367807648517.8579 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1981-08-28", "window": { "start": { "local": "1981-08-28T18:12:35-05:00", "utc": "1981-08-28T23:12:35Z", "ms": 367888355245.9649 }, "end": { "local": "1981-08-28T19:47:07-05:00", "utc": "1981-08-29T00:47:07Z", "ms": 367894026947.7489 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:16 on Thu 27 Aug to 10:18 on Fri 28 Aug.", "fact": "1981-08-27T16:15:53Z → 1981-08-28T15:17:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:47 on the 27th, 18:13–19:47 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 27th and 0 of 95 on the 28th.", "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 25026 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Cali, 1981: Thursday 27 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-27", "confidence": "determinate" } ], "quote": "In Cali, Aghora Caturdaśī 1981 falls on Thursday 27 August. Caturdaśī runs from 11:16 on Thu 27 Aug to 10:18 on Fri 28 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/shivaratri?on=1981-08-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35173, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 }, "end": { "local": "1981-08-28T10:17:35-05:00", "utc": "1981-08-28T15:17:35Z", "ms": 367859855092.6528 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-27T11:15:53-05:00", "utc": "1981-08-27T16:15:53Z", "ms": 367776952548.84796 }, "end": { "local": "1981-08-28T10:17:35-05:00", "utc": "1981-08-28T15:17:35Z", "ms": 367859855092.6528 } }, "kaala": "nishita", "days": [ { "local_date": "1981-08-26", "window": { "start": { "local": "1981-08-26T23:43:39-05:00", "utc": "1981-08-27T04:43:39Z", "ms": 367735419059.30615 }, "end": { "local": "1981-08-27T00:31:39-05:00", "utc": "1981-08-27T05:31:39Z", "ms": 367738299059.30615 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-08-27", "window": { "start": { "local": "1981-08-27T23:43:22-05:00", "utc": "1981-08-28T04:43:22Z", "ms": 367821801773.3582 }, "end": { "local": "1981-08-28T00:31:22-05:00", "utc": "1981-08-28T05:31:22Z", "ms": 367824681773.3582 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:16 on Thu 27 Aug to 10:18 on Fri 28 Aug.", "fact": "1981-08-27T16:15:53Z → 1981-08-28T15:17:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:44–00:32 on the 26th, 23:43–00:31 on the 27th.", "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 26th and 48 of 48 on the 27th.", "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 35173 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Thursday 27 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": "1981-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-27", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Thursday 27 August. Caturdaśī runs from 11:16 on Thu 27 Aug to 10:18 on Fri 28 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-08-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7168, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-08-29T09:43:25-05:00", "utc": "1981-08-29T14:43:25Z", "ms": 367944204680.5984 }, "end": { "local": "1981-08-30T09:37:10-05:00", "utc": "1981-08-30T14:37:10Z", "ms": 368030230044.1023 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-29T09:43:25-05:00", "utc": "1981-08-29T14:43:25Z", "ms": 367944204680.5984 }, "end": { "local": "1981-08-30T09:37:10-05:00", "utc": "1981-08-30T14:37:10Z", "ms": 368030230044.1023 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-29", "window": { "start": { "local": "1981-08-29T11:42:52-05:00", "utc": "1981-08-29T16:42:52Z", "ms": 367951372443.66785 }, "end": { "local": "1981-08-29T12:30:52-05:00", "utc": "1981-08-29T17:30:52Z", "ms": 367954252443.66785 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-08-30", "window": { "start": { "local": "1981-08-30T11:42:34-05:00", "utc": "1981-08-30T16:42:34Z", "ms": 368037754271.0126 }, "end": { "local": "1981-08-30T12:30:34-05:00", "utc": "1981-08-30T17:30:34Z", "ms": 368040634271.0126 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:43 on Sat 29 Aug to 09:37 on Sun 30 Aug.", "fact": "1981-08-29T14:43:25Z → 1981-08-30T14:37:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 29th, 11:43–12:31 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7168 s" }, { "step": "ruling", "text": "Rudra Vrata, Cali, 1981: Saturday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-08-29", "confidence": "determinate" } ], "quote": "In Cali, Rudra Vrata 1981 falls on Saturday 29 August. Pratipadā runs from 09:43 on Sat 29 Aug to 09:37 on Sun 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2531, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1981-08-31T10:02:03-05:00", "utc": "1981-08-31T15:02:03Z", "ms": 368118122533.92944 }, "end": { "local": "1981-09-01T10:59:46-05:00", "utc": "1981-09-01T15:59:46Z", "ms": 368207985891.4933 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-08-31T10:02:03-05:00", "utc": "1981-08-31T15:02:03Z", "ms": 368118122533.92944 }, "end": { "local": "1981-09-01T10:59:46-05:00", "utc": "1981-09-01T15:59:46Z", "ms": 368207985891.4933 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-08-31", "window": { "start": { "local": "1981-08-31T11:42:16-05:00", "utc": "1981-08-31T16:42:16Z", "ms": 368124135769.32935 }, "end": { "local": "1981-08-31T12:30:16-05:00", "utc": "1981-08-31T17:30:16Z", "ms": 368127015769.32935 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-09-01", "window": { "start": { "local": "1981-09-01T11:41:57-05:00", "utc": "1981-09-01T16:41:57Z", "ms": 368210516952.2514 }, "end": { "local": "1981-09-01T12:29:57-05:00", "utc": "1981-09-01T17:29:57Z", "ms": 368213396952.2514 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:02 on Mon 31 Aug to 11:00 on Tue 1 Sep.", "fact": "1981-08-31T15:02:03Z → 1981-09-01T15:59:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 31st, 11:42–12:30 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2531 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Cali, 1981: Monday 31 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-01", "confidence": "determinate" } ], "quote": "In Cali, Haritālikā Vrata (Hartalika Teej) 1981 falls on Monday 31 August. Tṛtīyā runs from 10:02 on Mon 31 Aug to 11:00 on Tue 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-01", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 0, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-09-01T10:59:46-05:00", "utc": "1981-09-01T15:59:46Z", "ms": 368207985891.4933 }, "end": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299778069.4927 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-01T10:59:46-05:00", "utc": "1981-09-01T15:59:46Z", "ms": 368207985891.4933 }, "end": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299778069.4927 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-01", "window": { "start": { "local": "1981-09-01T11:41:57-05:00", "utc": "1981-09-01T16:41:57Z", "ms": 368210516952.2514 }, "end": { "local": "1981-09-01T12:29:57-05:00", "utc": "1981-09-01T17:29:57Z", "ms": 368213396952.2514 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-09-02", "window": { "start": { "local": "1981-09-02T11:41:38-05:00", "utc": "1981-09-02T16:41:38Z", "ms": 368296897833.8096 }, "end": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299777833.8096 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:00 on Tue 1 Sep to 12:30 on Wed 2 Sep.", "fact": "1981-09-01T15:59:46Z → 1981-09-02T17:29:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 1st, 11:42–12:30 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 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": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 0 s < 300 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Cali, 1981: Tuesday 1 September.", "fact": "confidence: boundary (margin)" } ], "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": "1981-09-01", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-01", "confidence": "determinate" } ], "quote": "In Cali, Gaṇeśa Caturthī 1981 falls on Tuesday 1 September. Caturthī runs from 11:00 on Tue 1 Sep to 12:30 on Wed 2 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken. It is 0 min 00 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-03", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 0, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299778069.4927 }, "end": { "local": "1981-09-03T14:27:37-05:00", "utc": "1981-09-03T19:27:37Z", "ms": 368393257437.3487 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299778069.4927 }, "end": { "local": "1981-09-03T14:27:37-05:00", "utc": "1981-09-03T19:27:37Z", "ms": 368393257437.3487 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-02", "window": { "start": { "local": "1981-09-02T11:41:38-05:00", "utc": "1981-09-02T16:41:38Z", "ms": 368296897833.8096 }, "end": { "local": "1981-09-02T12:29:38-05:00", "utc": "1981-09-02T17:29:38Z", "ms": 368299777833.8096 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-09-03", "window": { "start": { "local": "1981-09-03T11:41:18-05:00", "utc": "1981-09-03T16:41:18Z", "ms": 368383278428.94476 }, "end": { "local": "1981-09-03T12:29:18-05:00", "utc": "1981-09-03T17:29:18Z", "ms": 368386158428.94476 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:30 on Wed 2 Sep to 14:28 on Thu 3 Sep.", "fact": "1981-09-02T17:29:38Z → 1981-09-03T19:27:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 2nd, 11:41–12:29 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 0 s < 300 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Cali, 1981: Thursday 3 September.", "fact": "confidence: boundary (margin)" } ], "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": "1981-09-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-03", "confidence": "boundary" } ], "quote": "In Cali, Ṛṣi Pañcamī 1981 falls on Thursday 3 September. Pañcamī runs from 12:30 on Wed 2 Sep to 14:28 on Thu 3 Sep and covers all of madhyāhna that midday. It is 0 min 00 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7099, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-09-03T14:27:37-05:00", "utc": "1981-09-03T19:27:37Z", "ms": 368393257437.3487 }, "end": { "local": "1981-09-04T16:45:53-05:00", "utc": "1981-09-04T21:45:53Z", "ms": 368487952691.1875 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-03T14:27:37-05:00", "utc": "1981-09-03T19:27:37Z", "ms": 368393257437.3487 }, "end": { "local": "1981-09-04T16:45:53-05:00", "utc": "1981-09-04T21:45:53Z", "ms": 368487952691.1875 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-03", "window": { "start": { "local": "1981-09-03T11:41:18-05:00", "utc": "1981-09-03T16:41:18Z", "ms": 368383278428.94476 }, "end": { "local": "1981-09-03T12:29:18-05:00", "utc": "1981-09-03T17:29:18Z", "ms": 368386158428.94476 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-09-04", "window": { "start": { "local": "1981-09-04T11:40:59-05:00", "utc": "1981-09-04T16:40:59Z", "ms": 368469658753.5272 }, "end": { "local": "1981-09-04T12:28:59-05:00", "utc": "1981-09-04T17:28:59Z", "ms": 368472538753.5272 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:28 on Thu 3 Sep to 16:46 on Fri 4 Sep.", "fact": "1981-09-03T19:27:37Z → 1981-09-04T21:45:53Z" }, { "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": "Ṣaṣṭhī 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7099 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Cali, 1981: Friday 4 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": "1981-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-04", "confidence": "determinate" } ], "quote": "In Cali, Sūrya Ṣaṣṭhī (Bhādrapada) 1981 falls on Friday 4 September. Ṣaṣṭhī runs from 14:28 on Thu 3 Sep to 16:46 on Fri 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15414, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-09-04T16:45:53-05:00", "utc": "1981-09-04T21:45:53Z", "ms": 368487952691.1875 }, "end": { "local": "1981-09-05T19:12:58-05:00", "utc": "1981-09-06T00:12:58Z", "ms": 368583177767.79974 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-04T16:45:53-05:00", "utc": "1981-09-04T21:45:53Z", "ms": 368487952691.1875 }, "end": { "local": "1981-09-05T19:12:58-05:00", "utc": "1981-09-06T00:12:58Z", "ms": 368583177767.79974 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-04", "window": { "start": { "local": "1981-09-04T11:40:59-05:00", "utc": "1981-09-04T16:40:59Z", "ms": 368469658753.5272 }, "end": { "local": "1981-09-04T12:28:59-05:00", "utc": "1981-09-04T17:28:59Z", "ms": 368472538753.5272 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-09-05", "window": { "start": { "local": "1981-09-05T11:40:39-05:00", "utc": "1981-09-05T16:40:39Z", "ms": 368556038824.188 }, "end": { "local": "1981-09-05T12:28:39-05:00", "utc": "1981-09-05T17:28:39Z", "ms": 368558918824.188 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 16:46 on Fri 4 Sep to 19:13 on Sat 5 Sep.", "fact": "1981-09-04T21:45:53Z → 1981-09-06T00:12:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 4th, 11:41–12:29 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15414 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Cali, 1981: Saturday 5 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": "1981-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-05", "confidence": "determinate" } ], "quote": "In Cali, Muktābharaṇa Vrata 1981 falls on Saturday 5 September. Saptamī runs from 16:46 on Fri 4 Sep to 19:13 on Sat 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24259, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-09-05T19:12:58-05:00", "utc": "1981-09-06T00:12:58Z", "ms": 368583177767.79974 }, "end": { "local": "1981-09-06T21:35:04-05:00", "utc": "1981-09-07T02:35:04Z", "ms": 368678103500.8203 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-05T19:12:58-05:00", "utc": "1981-09-06T00:12:58Z", "ms": 368583177767.79974 }, "end": { "local": "1981-09-06T21:35:04-05:00", "utc": "1981-09-07T02:35:04Z", "ms": 368678103500.8203 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-05", "window": { "start": { "local": "1981-09-05T11:40:39-05:00", "utc": "1981-09-05T16:40:39Z", "ms": 368556038824.188 }, "end": { "local": "1981-09-05T12:28:39-05:00", "utc": "1981-09-05T17:28:39Z", "ms": 368558918824.188 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-09-06", "window": { "start": { "local": "1981-09-06T11:40:19-05:00", "utc": "1981-09-06T16:40:19Z", "ms": 368642418658.277 }, "end": { "local": "1981-09-06T12:28:19-05:00", "utc": "1981-09-06T17:28:19Z", "ms": 368645298658.277 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:13 on Sat 5 Sep to 21:35 on Sun 6 Sep.", "fact": "1981-09-06T00:12:58Z → 1981-09-07T02:35:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 5th, 11:40–12:28 on the 6th.", "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 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: unstated → only-day · margin 24259 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Cali, 1981: Sunday 6 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": "1981-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-06", "confidence": "determinate" } ], "quote": "In Cali, Rādhāṣṭamī 1981 falls on Sunday 6 September. Aṣṭamī runs from 19:13 on Sat 5 Sep to 21:35 on Sun 6 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-09-09", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14335, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-09-09T01:09:09-05:00", "utc": "1981-09-09T06:09:09Z", "ms": 368863748879.2041 }, "end": { "local": "1981-09-10T01:59:49-05:00", "utc": "1981-09-10T06:59:49Z", "ms": 368953188643.5851 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-09T01:09:09-05:00", "utc": "1981-09-09T06:09:09Z", "ms": 368863748879.2041 }, "end": { "local": "1981-09-10T01:59:49-05:00", "utc": "1981-09-10T06:59:49Z", "ms": 368953188643.5851 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-09-09", "window": { "start": { "local": "1981-09-09T05:58:59-05:00", "utc": "1981-09-09T10:58:59Z", "ms": 368881139132.4566 }, "end": { "local": "1981-09-09T05:58:59-05:00", "utc": "1981-09-09T10:58:59Z", "ms": 368881139132.4566 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-09-10", "window": { "start": { "local": "1981-09-10T05:58:44-05:00", "utc": "1981-09-10T10:58:44Z", "ms": 368967523843.4005 }, "end": { "local": "1981-09-10T05:58:44-05:00", "utc": "1981-09-10T10:58:44Z", "ms": 368967523843.4005 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:09 on Wed 9 Sep to 02:00 on Thu 10 Sep.", "fact": "1981-09-09T06:09:09Z → 1981-09-10T06:59:49Z" }, { "step": "kaala", "text": "Sunrise is at 05:59 on the 9th and 05:59 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14335 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Cali, 1981: Wednesday 9 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": "1981-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-09", "confidence": "determinate" } ], "quote": "In Cali, Parivartanī Ekādaśī 1981 falls on Wednesday 9 September. Ekādaśī runs from 01:09 on Wed 9 Sep to 02:00 on Thu 10 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-09-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34388, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-09-10T01:59:49-05:00", "utc": "1981-09-10T06:59:49Z", "ms": 368953188643.5851 }, "end": { "local": "1981-09-11T02:05:27-05:00", "utc": "1981-09-11T07:05:27Z", "ms": 369039927068.0516 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-10T01:59:49-05:00", "utc": "1981-09-10T06:59:49Z", "ms": 368953188643.5851 }, "end": { "local": "1981-09-11T02:05:27-05:00", "utc": "1981-09-11T07:05:27Z", "ms": 369039927068.0516 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-10", "window": { "start": { "local": "1981-09-10T11:38:56-05:00", "utc": "1981-09-10T16:38:56Z", "ms": 368987936000.6334 }, "end": { "local": "1981-09-10T12:26:56-05:00", "utc": "1981-09-10T17:26:56Z", "ms": 368990816000.6334 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-09-11", "window": { "start": { "local": "1981-09-11T11:38:35-05:00", "utc": "1981-09-11T16:38:35Z", "ms": 369074314937.29224 }, "end": { "local": "1981-09-11T12:26:35-05:00", "utc": "1981-09-11T17:26:35Z", "ms": 369077194937.29224 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:00 on Thu 10 Sep to 02:05 on Fri 11 Sep.", "fact": "1981-09-10T06:59:49Z → 1981-09-11T07:05:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 10th, 11:39–12:27 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34388 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Cali, 1981: Thursday 10 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": "1981-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-10", "confidence": "determinate" } ], "quote": "In Cali, Vāmana Jayantī 1981 falls on Thursday 10 September. Dvādaśī runs from 02:00 on Thu 10 Sep to 02:05 on Fri 11 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-09-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20665, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-09-11T02:05:27-05:00", "utc": "1981-09-11T07:05:27Z", "ms": 369039927068.0516 }, "end": { "local": "1981-09-12T01:25:58-05:00", "utc": "1981-09-12T06:25:58Z", "ms": 369123958286.36127 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-11T02:05:27-05:00", "utc": "1981-09-11T07:05:27Z", "ms": 369039927068.0516 }, "end": { "local": "1981-09-12T01:25:58-05:00", "utc": "1981-09-12T06:25:58Z", "ms": 369123958286.36127 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-09-10", "window": { "start": { "local": "1981-09-10T18:07:08-05:00", "utc": "1981-09-10T23:07:08Z", "ms": 369011228157.8663 }, "end": { "local": "1981-09-10T19:41:59-05:00", "utc": "1981-09-11T00:41:59Z", "ms": 369016918858.85834 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1981-09-11", "window": { "start": { "local": "1981-09-11T18:06:41-05:00", "utc": "1981-09-11T23:06:41Z", "ms": 369097601459.2777 }, "end": { "local": "1981-09-11T19:41:34-05:00", "utc": "1981-09-12T00:41:34Z", "ms": 369103293647.2499 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:05 on Fri 11 Sep to 01:26 on Sat 12 Sep.", "fact": "1981-09-11T07:05:27Z → 1981-09-12T06:25:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:07–19:42 on the 10th, 18:07–19:42 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 10th and 95 of 95 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20665 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Friday 11 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": "1981-09-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-11", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Friday 11 September. Trayodaśī runs from 02:05 on Fri 11 Sep to 01:26 on Sat 12 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-09-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16335, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-09-12T01:25:58-05:00", "utc": "1981-09-12T06:25:58Z", "ms": 369123958286.36127 }, "end": { "local": "1981-09-13T00:04:57-05:00", "utc": "1981-09-13T05:04:57Z", "ms": 369205497313.9881 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1981-09-12T01:25:58-05:00", "utc": "1981-09-12T06:25:58Z", "ms": 369123958286.36127 }, "end": { "local": "1981-09-13T00:04:57-05:00", "utc": "1981-09-13T05:04:57Z", "ms": 369205497313.9881 } }, "kaala": "udaya-3", "days": [ { "local_date": "1981-09-12", "window": { "start": { "local": "1981-09-12T05:58:13-05:00", "utc": "1981-09-12T10:58:13Z", "ms": 369140292869.0691 }, "end": { "local": "1981-09-12T08:23:49-05:00", "utc": "1981-09-12T13:23:49Z", "ms": 369149029224.3083 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1981-09-13", "window": { "start": { "local": "1981-09-13T05:57:57-05:00", "utc": "1981-09-13T10:57:57Z", "ms": 369226677226.5399 }, "end": { "local": "1981-09-13T08:23:31-05:00", "utc": "1981-09-13T13:23:31Z", "ms": 369235411329.2086 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:26 on Sat 12 Sep to 00:05 on Sun 13 Sep.", "fact": "1981-09-12T06:25:58Z → 1981-09-13T05:04:57Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:58–08:24 on the 12th, 05:58–08:24 on the 13th.", "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 146 of 146 minutes on the 12th and 0 of 146 on the 13th.", "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 16335 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Cali, 1981: Saturday 12 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": "1981-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-12", "confidence": "determinate" } ], "quote": "In Cali, Ananta Caturdaśī 1981 falls on Saturday 12 September. Caturdaśī runs from 01:26 on Sat 12 Sep to 00:05 on Sun 13 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-09-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23005, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-09-16T14:11:55-05:00", "utc": "1981-09-16T19:11:55Z", "ms": 369515514971.6247 }, "end": { "local": "1981-09-17T11:19:41-05:00", "utc": "1981-09-17T16:19:41Z", "ms": 369591581067.99927 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-16T14:11:55-05:00", "utc": "1981-09-16T19:11:55Z", "ms": 369515514971.6247 }, "end": { "local": "1981-09-17T11:19:41-05:00", "utc": "1981-09-17T16:19:41Z", "ms": 369591581067.99927 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-09-16", "window": { "start": { "local": "1981-09-16T20:35:19-05:00", "utc": "1981-09-17T01:35:19Z", "ms": 369538519478.5543 }, "end": { "local": "1981-09-16T20:35:19-05:00", "utc": "1981-09-17T01:35:19Z", "ms": 369538519478.5543 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-09-17", "window": { "start": { "local": "1981-09-17T21:28:09-05:00", "utc": "1981-09-18T02:28:09Z", "ms": 369628088936.10187 }, "end": { "local": "1981-09-17T21:28:09-05:00", "utc": "1981-09-18T02:28:09Z", "ms": 369628088936.10187 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:12 on Wed 16 Sep to 11:20 on Thu 17 Sep.", "fact": "1981-09-16T19:11:55Z → 1981-09-17T16:19:41Z" }, { "step": "kaala", "text": "Moonrise is at 20:35 on the 16th and 21:28 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 16th and is not on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23005 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Wednesday 16 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": "1981-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-16", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Wednesday 16 September. Caturthī runs from 14:12 on Wed 16 Sep to 11:20 on Thu 17 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-09-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27534, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-09-18T08:34:11-05:00", "utc": "1981-09-18T13:34:11Z", "ms": 369668050715.8048 }, "end": { "local": "1981-09-19T06:01:43-05:00", "utc": "1981-09-19T11:01:43Z", "ms": 369745302810.6584 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-18T08:34:11-05:00", "utc": "1981-09-18T13:34:11Z", "ms": 369668050715.8048 }, "end": { "local": "1981-09-19T06:01:43-05:00", "utc": "1981-09-19T11:01:43Z", "ms": 369745302810.6584 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-09-17", "window": { "start": { "local": "1981-09-17T21:28:09-05:00", "utc": "1981-09-18T02:28:09Z", "ms": 369628088936.10187 }, "end": { "local": "1981-09-17T21:28:09-05:00", "utc": "1981-09-18T02:28:09Z", "ms": 369628088936.10187 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-09-18", "window": { "start": { "local": "1981-09-18T22:22:49-05:00", "utc": "1981-09-19T03:22:49Z", "ms": 369717768711.0299 }, "end": { "local": "1981-09-18T22:22:49-05:00", "utc": "1981-09-19T03:22:49Z", "ms": 369717768711.0299 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 08:34 on Fri 18 Sep to 06:02 on Sat 19 Sep.", "fact": "1981-09-18T13:34:11Z → 1981-09-19T11:01:43Z" }, { "step": "kaala", "text": "Moonrise is at 21:28 on the 17th and 22:23 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 17th and is on the 18th.", "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 27534 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Cali, 1981: Friday 18 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-18", "confidence": "determinate" } ], "quote": "In Cali, Candra Ṣaṣṭhī 1981 falls on Friday 18 September. Ṣaṣṭhī runs from 08:34 on Fri 18 Sep to 06:02 on Sat 19 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22530, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-09-20T03:47:02-05:00", "utc": "1981-09-20T08:47:02Z", "ms": 369823622285.6271 }, "end": { "local": "1981-09-21T01:53:14-05:00", "utc": "1981-09-21T06:53:14Z", "ms": 369903194181.50146 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-20T03:47:02-05:00", "utc": "1981-09-20T08:47:02Z", "ms": 369823622285.6271 }, "end": { "local": "1981-09-21T01:53:14-05:00", "utc": "1981-09-21T06:53:14Z", "ms": 369903194181.50146 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-09-19", "window": { "start": { "local": "1981-09-19T18:03:06-05:00", "utc": "1981-09-19T23:03:06Z", "ms": 369788585782.4339 }, "end": { "local": "1981-09-19T19:38:10-05:00", "utc": "1981-09-20T00:38:10Z", "ms": 369794289941.6173 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1981-09-20", "window": { "start": { "local": "1981-09-20T18:02:39-05:00", "utc": "1981-09-20T23:02:39Z", "ms": 369874958928.02765 }, "end": { "local": "1981-09-20T19:37:45-05:00", "utc": "1981-09-21T00:37:45Z", "ms": 369880664589.51324 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:47 on Sun 20 Sep to 01:53 on Mon 21 Sep.", "fact": "1981-09-20T08:47:02Z → 1981-09-21T06:53:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:03–19:38 on the 19th, 18:03–19:38 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 95 minutes on the 19th and 95 of 95 on the 20th.", "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 22530 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Cali, 1981: Sunday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-20", "confidence": "determinate" } ], "quote": "In Cali, Jitāṣṭamī (Jitiya) 1981 falls on Sunday 20 September. Aṣṭamī runs from 03:47 on Sun 20 Sep to 01:53 on Mon 21 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5788, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-09-20T03:47:02-05:00", "utc": "1981-09-20T08:47:02Z", "ms": 369823622285.6271 }, "end": { "local": "1981-09-21T01:53:14-05:00", "utc": "1981-09-21T06:53:14Z", "ms": 369903194181.50146 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-20T03:47:02-05:00", "utc": "1981-09-20T08:47:02Z", "ms": 369823622285.6271 }, "end": { "local": "1981-09-21T01:53:14-05:00", "utc": "1981-09-21T06:53:14Z", "ms": 369903194181.50146 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-09-19", "window": { "start": { "local": "1981-09-19T23:19:14-05:00", "utc": "1981-09-20T04:19:14Z", "ms": 369807553636.26447 }, "end": { "local": "1981-09-19T23:19:14-05:00", "utc": "1981-09-20T04:19:14Z", "ms": 369807553636.26447 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-09-20", "window": { "start": { "local": "1981-09-21T00:16:46-05:00", "utc": "1981-09-21T05:16:46Z", "ms": 369897405860.81 }, "end": { "local": "1981-09-21T00:16:46-05:00", "utc": "1981-09-21T05:16:46Z", "ms": 369897405860.81 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:47 on Sun 20 Sep to 01:53 on Mon 21 Sep.", "fact": "1981-09-20T08:47:02Z → 1981-09-21T06:53:14Z" }, { "step": "kaala", "text": "Moonrise is at 23:19 on the 19th and 00:17 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 19th and is on the 20th.", "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 5788 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Cali, 1981: Sunday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-20", "confidence": "determinate" } ], "quote": "In Cali, Mahālakṣmī Vrata Samāpana 1981 falls on Sunday 20 September. Aṣṭamī runs from 03:47 on Sun 20 Sep to 01:53 on Mon 21 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-09-23", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24127, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-09-22T23:13:13-05:00", "utc": "1981-09-23T04:13:13Z", "ms": 370066393325.7998 }, "end": { "local": "1981-09-23T22:27:03-05:00", "utc": "1981-09-24T03:27:03Z", "ms": 370150023458.8285 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-22T23:13:13-05:00", "utc": "1981-09-23T04:13:13Z", "ms": 370066393325.7998 }, "end": { "local": "1981-09-23T22:27:03-05:00", "utc": "1981-09-24T03:27:03Z", "ms": 370150023458.8285 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-09-23", "window": { "start": { "local": "1981-09-23T05:55:21-05:00", "utc": "1981-09-23T10:55:21Z", "ms": 370090520538.4936 }, "end": { "local": "1981-09-23T05:55:21-05:00", "utc": "1981-09-23T10:55:21Z", "ms": 370090520538.4936 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-09-24", "window": { "start": { "local": "1981-09-24T05:55:05-05:00", "utc": "1981-09-24T10:55:05Z", "ms": 370176905310.29047 }, "end": { "local": "1981-09-24T05:55:05-05:00", "utc": "1981-09-24T10:55:05Z", "ms": 370176905310.29047 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:13 on Tue 22 Sep to 22:27 on Wed 23 Sep.", "fact": "1981-09-23T04:13:13Z → 1981-09-24T03:27:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:55 on the 23rd and 05:55 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24127 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Cali, 1981: Wednesday 23 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": "1981-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-23", "confidence": "determinate" } ], "quote": "In Cali, Indirā Ekādaśī 1981 falls on Wednesday 23 September. Ekādaśī runs from 23:13 on Tue 22 Sep to 22:27 on Wed 23 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-09-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-09-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8726, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-09-24T22:03:00-05:00", "utc": "1981-09-25T03:03:00Z", "ms": 370234979628.1569 }, "end": { "local": "1981-09-25T22:01:06-05:00", "utc": "1981-09-26T03:01:06Z", "ms": 370321265798.51874 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-24T22:03:00-05:00", "utc": "1981-09-25T03:03:00Z", "ms": 370234979628.1569 }, "end": { "local": "1981-09-25T22:01:06-05:00", "utc": "1981-09-26T03:01:06Z", "ms": 370321265798.51874 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-09-24", "window": { "start": { "local": "1981-09-24T18:00:53-05:00", "utc": "1981-09-24T23:00:53Z", "ms": 370220452699.7998 }, "end": { "local": "1981-09-24T19:36:04-05:00", "utc": "1981-09-25T00:36:04Z", "ms": 370226164371.24426 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1981-09-25", "window": { "start": { "local": "1981-09-25T18:00:27-05:00", "utc": "1981-09-25T23:00:27Z", "ms": 370306826535.4871 }, "end": { "local": "1981-09-25T19:35:40-05:00", "utc": "1981-09-26T00:35:40Z", "ms": 370312539708.2095 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:03 on Thu 24 Sep to 22:01 on Fri 25 Sep.", "fact": "1981-09-25T03:03:00Z → 1981-09-26T03:01:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:01–19:36 on the 24th, 18:00–19:36 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 24th and 95 of 95 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 8726 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Friday 25 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": "1981-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-25", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Friday 25 September. Trayodaśī runs from 22:03 on Thu 24 Sep to 22:01 on Fri 25 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-09-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-09-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4265, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-09-25T22:01:06-05:00", "utc": "1981-09-26T03:01:06Z", "ms": 370321265798.51874 }, "end": { "local": "1981-09-26T22:22:05-05:00", "utc": "1981-09-27T03:22:05Z", "ms": 370408925118.95844 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-25T22:01:06-05:00", "utc": "1981-09-26T03:01:06Z", "ms": 370321265798.51874 }, "end": { "local": "1981-09-26T22:22:05-05:00", "utc": "1981-09-27T03:22:05Z", "ms": 370408925118.95844 } }, "kaala": "nishita", "days": [ { "local_date": "1981-09-25", "window": { "start": { "local": "1981-09-25T23:33:31-05:00", "utc": "1981-09-26T04:33:31Z", "ms": 370326810933.1959 }, "end": { "local": "1981-09-26T00:21:31-05:00", "utc": "1981-09-26T05:21:31Z", "ms": 370329690933.1959 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-09-26", "window": { "start": { "local": "1981-09-26T23:33:11-05:00", "utc": "1981-09-27T04:33:11Z", "ms": 370413190588.44556 }, "end": { "local": "1981-09-27T00:21:11-05:00", "utc": "1981-09-27T05:21:11Z", "ms": 370416070588.44556 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:01 on Fri 25 Sep to 22:22 on Sat 26 Sep.", "fact": "1981-09-26T03:01:06Z → 1981-09-27T03:22:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:34–00:22 on the 25th, 23:33–00:21 on the 26th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4265 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Friday 25 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": "1981-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-25", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Friday 25 September. Caturdaśī runs from 22:01 on Fri 25 Sep to 22:22 on Sat 26 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-09-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24430, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1981-09-26T22:22:05-05:00", "utc": "1981-09-27T03:22:05Z", "ms": 370408925118.95844 }, "end": { "local": "1981-09-27T23:07:12-05:00", "utc": "1981-09-28T04:07:12Z", "ms": 370498032303.0421 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-26T22:22:05-05:00", "utc": "1981-09-27T03:22:05Z", "ms": 370408925118.95844 }, "end": { "local": "1981-09-27T23:07:12-05:00", "utc": "1981-09-28T04:07:12Z", "ms": 370498032303.0421 } }, "kaala": "aparahna", "days": [ { "local_date": "1981-09-26", "window": { "start": { "local": "1981-09-26T13:09:50-05:00", "utc": "1981-09-26T18:09:50Z", "ms": 370375790471.1892 }, "end": { "local": "1981-09-26T15:34:56-05:00", "utc": "1981-09-26T20:34:56Z", "ms": 370384495517.95074 } }, "covered_min": 0, "window_min": 145, "qualifies": false }, { "local_date": "1981-09-27", "window": { "start": { "local": "1981-09-27T13:09:29-05:00", "utc": "1981-09-27T18:09:29Z", "ms": 370462169128.066 }, "end": { "local": "1981-09-27T15:34:32-05:00", "utc": "1981-09-27T20:34:32Z", "ms": 370470871966.695 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 22:22 on Sat 26 Sep to 23:07 on Sun 27 Sep.", "fact": "1981-09-27T03:22:05Z → 1981-09-28T04:07:12Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:10–15:35 on the 26th, 13:09–15:35 on the 27th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 145 minutes on the 26th and 145 of 145 on the 27th.", "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 24430 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Cali, 1981: Sunday 27 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-27", "confidence": "determinate" } ], "quote": "In Cali, Mahālaya Amāvāsyā 1981 falls on Sunday 27 September. Amāvasyā runs from 22:22 on Sat 26 Sep to 23:07 on Sun 27 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38775, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-09-27T23:07:12-05:00", "utc": "1981-09-28T04:07:12Z", "ms": 370498032303.0421 }, "end": { "local": "1981-09-29T00:17:43-05:00", "utc": "1981-09-29T05:17:43Z", "ms": 370588663327.2907 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-09-27T23:07:12-05:00", "utc": "1981-09-28T04:07:12Z", "ms": 370498032303.0421 }, "end": { "local": "1981-09-29T00:17:43-05:00", "utc": "1981-09-29T05:17:43Z", "ms": 370588663327.2907 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-09-27", "window": { "start": { "local": "1981-09-27T11:32:58-05:00", "utc": "1981-09-27T16:32:58Z", "ms": 370456377708.75146 }, "end": { "local": "1981-09-27T12:20:58-05:00", "utc": "1981-09-27T17:20:58Z", "ms": 370459257708.75146 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-09-28", "window": { "start": { "local": "1981-09-28T11:32:38-05:00", "utc": "1981-09-28T16:32:38Z", "ms": 370542757685.35034 }, "end": { "local": "1981-09-28T12:20:38-05:00", "utc": "1981-09-28T17:20:38Z", "ms": 370545637685.35034 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 23:07 on Sun 27 Sep to 00:18 on Tue 29 Sep.", "fact": "1981-09-28T04:07:12Z → 1981-09-29T05:17:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 27th, 11:33–12:21 on the 28th.", "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 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38775 s" }, { "step": "ruling", "text": "Navarātrārambha, Cali, 1981: Monday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-09-28", "confidence": "determinate" } ], "quote": "In Cali, Navarātrārambha (Navratri) 1981 falls on Monday 28 September. Pratipadā runs from 23:07 on Sun 27 Sep to 00:18 on Tue 29 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-10-01", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18932, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-10-01T03:54:53-05:00", "utc": "1981-10-01T08:54:53Z", "ms": 370774492901.53485 }, "end": { "local": "1981-10-02T06:15:48-05:00", "utc": "1981-10-02T11:15:48Z", "ms": 370869347868.8698 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-01T03:54:53-05:00", "utc": "1981-10-01T08:54:53Z", "ms": 370774492901.53485 }, "end": { "local": "1981-10-02T06:15:48-05:00", "utc": "1981-10-02T11:15:48Z", "ms": 370869347868.8698 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-01", "window": { "start": { "local": "1981-10-01T11:31:39-05:00", "utc": "1981-10-01T16:31:39Z", "ms": 370801899081.33374 }, "end": { "local": "1981-10-01T12:19:39-05:00", "utc": "1981-10-01T17:19:39Z", "ms": 370804779081.33374 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-10-02", "window": { "start": { "local": "1981-10-02T11:31:20-05:00", "utc": "1981-10-02T16:31:20Z", "ms": 370888280094.1907 }, "end": { "local": "1981-10-02T12:19:20-05:00", "utc": "1981-10-02T17:19:20Z", "ms": 370891160094.1907 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:55 on Thu 1 Oct to 06:16 on Fri 2 Oct.", "fact": "1981-10-01T08:54:53Z → 1981-10-02T11:15:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 1st, 11:31–12:19 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18932 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Thursday 1 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": "1981-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-01", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Thursday 1 October. Caturthī runs from 03:55 on Thu 1 Oct to 06:16 on Fri 2 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-10-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16917, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-10-04T11:22:57-05:00", "utc": "1981-10-04T16:22:57Z", "ms": 371060577496.8392 }, "end": { "local": "1981-10-05T13:44:01-05:00", "utc": "1981-10-05T18:44:01Z", "ms": 371155441123.88776 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-04T11:22:57-05:00", "utc": "1981-10-04T16:22:57Z", "ms": 371060577496.8392 }, "end": { "local": "1981-10-05T13:44:01-05:00", "utc": "1981-10-05T18:44:01Z", "ms": 371155441123.88776 } }, "kaala": "udaya-1", "days": [ { "local_date": "1981-10-04", "window": { "start": { "local": "1981-10-04T05:52:44-05:00", "utc": "1981-10-04T10:52:44Z", "ms": 371040764158.7972 }, "end": { "local": "1981-10-04T06:41:00-05:00", "utc": "1981-10-04T11:41:00Z", "ms": 371043660010.8695 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-05", "window": { "start": { "local": "1981-10-05T05:52:32-05:00", "utc": "1981-10-05T10:52:32Z", "ms": 371127151521.97046 }, "end": { "local": "1981-10-05T06:40:47-05:00", "utc": "1981-10-05T11:40:47Z", "ms": 371130046656.2217 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 11:23 on Sun 4 Oct to 13:44 on Mon 5 Oct.", "fact": "1981-10-04T16:22:57Z → 1981-10-05T18:44:01Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:53–06:41 on the 4th, 05:53–06:41 on the 5th.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16917 s" }, { "step": "ruling", "text": "Durgā Saptamī, Cali, 1981: Monday 5 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": "1981-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-05", "confidence": "determinate" } ], "quote": "In Cali, Durgā Saptamī 1981 falls on Monday 5 October. Saptamī runs from 11:23 on Sun 4 Oct to 13:44 on Mon 5 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5136, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-10-05T13:44:01-05:00", "utc": "1981-10-05T18:44:01Z", "ms": 371155441123.88776 }, "end": { "local": "1981-10-06T15:37:54-05:00", "utc": "1981-10-06T20:37:54Z", "ms": 371248673709.7348 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-05T13:44:01-05:00", "utc": "1981-10-05T18:44:01Z", "ms": 371155441123.88776 }, "end": { "local": "1981-10-06T15:37:54-05:00", "utc": "1981-10-06T20:37:54Z", "ms": 371248673709.7348 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-05", "window": { "start": { "local": "1981-10-05T11:30:25-05:00", "utc": "1981-10-05T16:30:25Z", "ms": 371147425028.8544 }, "end": { "local": "1981-10-05T12:18:25-05:00", "utc": "1981-10-05T17:18:25Z", "ms": 371150305028.8544 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-06", "window": { "start": { "local": "1981-10-06T11:30:07-05:00", "utc": "1981-10-06T16:30:07Z", "ms": 371233807368.3087 }, "end": { "local": "1981-10-06T12:18:07-05:00", "utc": "1981-10-06T17:18:07Z", "ms": 371236687368.3087 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:44 on Mon 5 Oct to 15:38 on Tue 6 Oct.", "fact": "1981-10-05T18:44:01Z → 1981-10-06T20:37:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 5th, 11:30–12:18 on the 6th.", "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 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5136 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Cali, 1981: Tuesday 6 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": "1981-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-06", "confidence": "determinate" } ], "quote": "In Cali, Mahāṣṭamī (Durga Ashtami) 1981 falls on Tuesday 6 October. Aṣṭamī runs from 13:44 on Mon 5 Oct to 15:38 on Tue 6 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11986, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1981-10-06T15:37:54-05:00", "utc": "1981-10-06T20:37:54Z", "ms": 371248673709.7348 }, "end": { "local": "1981-10-07T16:52:15-05:00", "utc": "1981-10-07T21:52:15Z", "ms": 371339534945.2302 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-06T15:37:54-05:00", "utc": "1981-10-06T20:37:54Z", "ms": 371248673709.7348 }, "end": { "local": "1981-10-07T16:52:15-05:00", "utc": "1981-10-07T21:52:15Z", "ms": 371339534945.2302 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-06", "window": { "start": { "local": "1981-10-06T11:30:07-05:00", "utc": "1981-10-06T16:30:07Z", "ms": 371233807368.3087 }, "end": { "local": "1981-10-06T12:18:07-05:00", "utc": "1981-10-06T17:18:07Z", "ms": 371236687368.3087 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-07", "window": { "start": { "local": "1981-10-07T11:29:50-05:00", "utc": "1981-10-07T16:29:50Z", "ms": 371320190087.10913 }, "end": { "local": "1981-10-07T12:17:50-05:00", "utc": "1981-10-07T17:17:50Z", "ms": 371323070087.10913 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 15:38 on Tue 6 Oct to 16:52 on Wed 7 Oct.", "fact": "1981-10-06T20:37:54Z → 1981-10-07T21:52:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 6th, 11:30–12:18 on the 7th.", "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 6th and 48 of 48 on the 7th.", "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 11986 s" }, { "step": "ruling", "text": "Mahānavamī, Cali, 1981: Wednesday 7 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": "1981-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-07", "confidence": "determinate" } ], "quote": "In Cali, Mahānavamī 1981 falls on Wednesday 7 October. Navamī runs from 15:38 on Tue 6 Oct to 16:52 on Wed 7 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2196, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1981-10-07T16:52:15-05:00", "utc": "1981-10-07T21:52:15Z", "ms": 371339534945.2302 }, "end": { "local": "1981-10-08T17:18:34-05:00", "utc": "1981-10-08T22:18:34Z", "ms": 371427514378.2704 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1981-10-07T18:53:45-05:00", "utc": "1981-10-07T23:53:45Z", "ms": 371346825311.46515 }, "end": { "local": "1981-10-08T17:18:34-05:00", "utc": "1981-10-08T22:18:34Z", "ms": 371427514378.2704 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1981-10-07T18:53:45-05:00", "utc": "1981-10-07T23:53:45Z", "ms": 371346825311.46515 }, "end": { "local": "1981-10-08T19:52:30-05:00", "utc": "1981-10-09T00:52:30Z", "ms": 371436750168.04706 } } }, "kaala": "daytime", "days": [ { "local_date": "1981-10-07", "window": { "start": { "local": "1981-10-07T05:52:07-05:00", "utc": "1981-10-07T10:52:07Z", "ms": 371299927281.4541 }, "end": { "local": "1981-10-07T17:55:33-05:00", "utc": "1981-10-07T22:55:33Z", "ms": 371343332892.76416 } }, "covered_min": 0, "window_min": 723, "qualifies": false }, { "local_date": "1981-10-08", "window": { "start": { "local": "1981-10-08T05:51:56-05:00", "utc": "1981-10-08T10:51:56Z", "ms": 371386315714.8422 }, "end": { "local": "1981-10-08T17:55:11-05:00", "utc": "1981-10-08T22:55:11Z", "ms": 371429710695.3228 } }, "covered_min": 687, "window_min": 723, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 16:52 on Wed 7 Oct to 17:19 on Thu 8 Oct, and Śravaṇa from 18:54 on Wed 7 Oct to 19:53 on Thu 8 Oct. They are together from 18:54 on Wed 7 Oct to 17:19 on Thu 8 Oct.", "fact": "1981-10-07T23:53:45Z → 1981-10-08T22:18:34Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 05:52–17:56 on the 7th, 05:52–17:55 on the 8th.", "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 723 minutes on the 7th and 687 of 723 on the 8th.", "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 2196 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Cali, 1981: Thursday 8 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": "1981-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-08", "confidence": "determinate" } ], "quote": "In Cali, Vijayā Daśamī (Dussehra) 1981 falls on Thursday 8 October. Daśamī runs from 16:52 on Wed 7 Oct to 17:19 on Thu 8 Oct and is with Śravaṇa in the day time that day, for 687 minutes.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-10-09", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39686, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-10-08T17:18:34-05:00", "utc": "1981-10-08T22:18:34Z", "ms": 371427514378.2704 }, "end": { "local": "1981-10-09T16:53:11-05:00", "utc": "1981-10-09T21:53:11Z", "ms": 371512390529.68317 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-08T17:18:34-05:00", "utc": "1981-10-08T22:18:34Z", "ms": 371427514378.2704 }, "end": { "local": "1981-10-09T16:53:11-05:00", "utc": "1981-10-09T21:53:11Z", "ms": 371512390529.68317 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-10-08", "window": { "start": { "local": "1981-10-08T05:51:56-05:00", "utc": "1981-10-08T10:51:56Z", "ms": 371386315714.8422 }, "end": { "local": "1981-10-08T05:51:56-05:00", "utc": "1981-10-08T10:51:56Z", "ms": 371386315714.8422 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-10-09", "window": { "start": { "local": "1981-10-09T05:51:45-05:00", "utc": "1981-10-09T10:51:45Z", "ms": 371472704542.8078 }, "end": { "local": "1981-10-09T05:51:45-05:00", "utc": "1981-10-09T10:51:45Z", "ms": 371472704542.8078 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:19 on Thu 8 Oct to 16:53 on Fri 9 Oct.", "fact": "1981-10-08T22:18:34Z → 1981-10-09T21:53:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:52 on the 8th and 05:52 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 39686 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Cali, 1981: Friday 9 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": "1981-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-09", "confidence": "determinate" } ], "quote": "In Cali, Pāśāṅkuśā Ekādaśī 1981 falls on Friday 9 October. Ekādaśī runs from 17:19 on Thu 8 Oct to 16:53 on Fri 9 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-10-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-10-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8239, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-10-10T15:37:08-05:00", "utc": "1981-10-10T20:37:08Z", "ms": 371594228219.20056 }, "end": { "local": "1981-10-11T13:35:32-05:00", "utc": "1981-10-11T18:35:32Z", "ms": 371673332078.81757 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1981-10-10T15:37:08-05:00", "utc": "1981-10-10T20:37:08Z", "ms": 371594228219.20056 }, "end": { "local": "1981-10-11T13:35:32-05:00", "utc": "1981-10-11T18:35:32Z", "ms": 371673332078.81757 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-10", "window": { "start": { "local": "1981-10-10T17:54:28-05:00", "utc": "1981-10-10T22:54:28Z", "ms": 371602467656.0254 }, "end": { "local": "1981-10-10T19:30:03-05:00", "utc": "1981-10-11T00:30:03Z", "ms": 371608203096.9099 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-11", "window": { "start": { "local": "1981-10-11T17:54:07-05:00", "utc": "1981-10-11T22:54:07Z", "ms": 371688846859.2042 }, "end": { "local": "1981-10-11T19:29:44-05:00", "utc": "1981-10-12T00:29:44Z", "ms": 371694583757.5156 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:37 on Sat 10 Oct to 13:36 on Sun 11 Oct.", "fact": "1981-10-10T20:37:08Z → 1981-10-11T18:35:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:30 on the 10th, 17:54–19:30 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 10th and 0 of 96 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8239 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Saturday 10 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": "1981-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-10", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Saturday 10 October. Trayodaśī runs from 15:37 on Sat 10 Oct to 13:36 on Sun 11 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-10-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-15", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4623, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-10-15T21:29:51-05:00", "utc": "1981-10-16T02:29:51Z", "ms": 372047390558.7802 }, "end": { "local": "1981-10-16T18:18:21-05:00", "utc": "1981-10-16T23:18:21Z", "ms": 372122301165.8827 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-15T21:29:51-05:00", "utc": "1981-10-16T02:29:51Z", "ms": 372047390558.7802 }, "end": { "local": "1981-10-16T18:18:21-05:00", "utc": "1981-10-16T23:18:21Z", "ms": 372122301165.8827 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-10-15", "window": { "start": { "local": "1981-10-15T20:12:48-05:00", "utc": "1981-10-16T01:12:48Z", "ms": 372042767501.73193 }, "end": { "local": "1981-10-15T20:12:48-05:00", "utc": "1981-10-16T01:12:48Z", "ms": 372042767501.73193 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-10-16", "window": { "start": { "local": "1981-10-16T21:10:40-05:00", "utc": "1981-10-17T02:10:40Z", "ms": 372132640490.5503 }, "end": { "local": "1981-10-16T21:10:40-05:00", "utc": "1981-10-17T02:10:40Z", "ms": 372132640490.5503 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:30 on Thu 15 Oct to 18:18 on Fri 16 Oct.", "fact": "1981-10-16T02:29:51Z → 1981-10-16T23:18:21Z" }, { "step": "kaala", "text": "Moonrise is at 20:13 on the 15th and 21:11 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: purvaviddha → tithi-day · margin 4623 s" }, { "step": "ruling", "text": "Karaka Caturthī, Cali, 1981: Thursday 15 October.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "1981-10-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-15", "confidence": "boundary" } ], "quote": "In Cali, Karaka Caturthī (Karwa Chauth) 1981 falls on Thursday 15 October. Caturthī runs from 21:30 on Thu 15 Oct to 18:18 on Fri 16 Oct, and is current at moonrise on neither day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-10-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-15", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4623, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-10-15T21:29:51-05:00", "utc": "1981-10-16T02:29:51Z", "ms": 372047390558.7802 }, "end": { "local": "1981-10-16T18:18:21-05:00", "utc": "1981-10-16T23:18:21Z", "ms": 372122301165.8827 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-15T21:29:51-05:00", "utc": "1981-10-16T02:29:51Z", "ms": 372047390558.7802 }, "end": { "local": "1981-10-16T18:18:21-05:00", "utc": "1981-10-16T23:18:21Z", "ms": 372122301165.8827 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-10-15", "window": { "start": { "local": "1981-10-15T20:12:48-05:00", "utc": "1981-10-16T01:12:48Z", "ms": 372042767501.73193 }, "end": { "local": "1981-10-15T20:12:48-05:00", "utc": "1981-10-16T01:12:48Z", "ms": 372042767501.73193 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-10-16", "window": { "start": { "local": "1981-10-16T21:10:40-05:00", "utc": "1981-10-17T02:10:40Z", "ms": 372132640490.5503 }, "end": { "local": "1981-10-16T21:10:40-05:00", "utc": "1981-10-17T02:10:40Z", "ms": 372132640490.5503 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:30 on Thu 15 Oct to 18:18 on Fri 16 Oct.", "fact": "1981-10-16T02:29:51Z → 1981-10-16T23:18:21Z" }, { "step": "kaala", "text": "Moonrise is at 20:13 on the 15th and 21:11 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is not on the 16th.", "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 4623 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Thursday 15 October.", "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": "1981-10-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-15", "confidence": "boundary" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Thursday 15 October. Caturthī runs from 21:30 on Thu 15 Oct to 18:18 on Fri 16 Oct, and is current at moonrise on neither day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-10-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36103, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-10-19T11:21:14-05:00", "utc": "1981-10-19T16:21:14Z", "ms": 372356474335.9135 }, "end": { "local": "1981-10-20T10:08:27-05:00", "utc": "1981-10-20T15:08:27Z", "ms": 372438506544.0732 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-19T11:21:14-05:00", "utc": "1981-10-19T16:21:14Z", "ms": 372356474335.9135 }, "end": { "local": "1981-10-20T10:08:27-05:00", "utc": "1981-10-20T15:08:27Z", "ms": 372438506544.0732 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-10-18", "window": { "start": { "local": "1981-10-18T23:09:00-05:00", "utc": "1981-10-19T04:09:00Z", "ms": 372312539763.6064 }, "end": { "local": "1981-10-18T23:09:00-05:00", "utc": "1981-10-19T04:09:00Z", "ms": 372312539763.6064 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-10-19", "window": { "start": { "local": "1981-10-20T00:06:44-05:00", "utc": "1981-10-20T05:06:44Z", "ms": 372402403869.47327 }, "end": { "local": "1981-10-20T00:06:44-05:00", "utc": "1981-10-20T05:06:44Z", "ms": 372402403869.47327 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 11:21 on Mon 19 Oct to 10:08 on Tue 20 Oct.", "fact": "1981-10-19T16:21:14Z → 1981-10-20T15:08:27Z" }, { "step": "kaala", "text": "Moonrise is at 23:09 on the 18th and 00:07 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 18th and is on the 19th.", "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 36103 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Cali, 1981: Monday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-19", "confidence": "determinate" } ], "quote": "In Cali, Ahoyī Aṣṭamī 1981 falls on Monday 19 October. Aṣṭamī runs from 11:21 on Mon 19 Oct to 10:08 on Tue 20 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-10-23", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12817, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-10-22T09:23:42-05:00", "utc": "1981-10-22T14:23:42Z", "ms": 372608621868.8996 }, "end": { "local": "1981-10-23T09:46:33-05:00", "utc": "1981-10-23T14:46:33Z", "ms": 372696392519.1503 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-22T09:23:42-05:00", "utc": "1981-10-22T14:23:42Z", "ms": 372608621868.8996 }, "end": { "local": "1981-10-23T09:46:33-05:00", "utc": "1981-10-23T14:46:33Z", "ms": 372696392519.1503 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-10-22", "window": { "start": { "local": "1981-10-22T05:50:05-05:00", "utc": "1981-10-22T10:50:05Z", "ms": 372595804722.33527 }, "end": { "local": "1981-10-22T05:50:05-05:00", "utc": "1981-10-22T10:50:05Z", "ms": 372595804722.33527 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-10-23", "window": { "start": { "local": "1981-10-23T05:50:01-05:00", "utc": "1981-10-23T10:50:01Z", "ms": 372682201211.587 }, "end": { "local": "1981-10-23T05:50:01-05:00", "utc": "1981-10-23T10:50:01Z", "ms": 372682201211.587 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:24 on Thu 22 Oct to 09:47 on Fri 23 Oct.", "fact": "1981-10-22T14:23:42Z → 1981-10-23T14:46:33Z" }, { "step": "kaala", "text": "Sunrise is at 05:50 on the 22nd and 05:50 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is 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 12817 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Cali, 1981: Friday 23 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": "1981-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-23", "confidence": "determinate" } ], "quote": "In Cali, Ramā Ekādaśī 1981 falls on Friday 23 October. Ekādaśī runs from 09:24 on Thu 22 Oct to 09:47 on Fri 23 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-10-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26114, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-10-23T09:46:33-05:00", "utc": "1981-10-23T14:46:33Z", "ms": 372696392519.1503 }, "end": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-23T09:46:33-05:00", "utc": "1981-10-23T14:46:33Z", "ms": 372696392519.1503 }, "end": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-23", "window": { "start": { "local": "1981-10-23T17:50:44-05:00", "utc": "1981-10-23T22:50:44Z", "ms": 372725443818.60565 }, "end": { "local": "1981-10-23T19:26:38-05:00", "utc": "1981-10-24T00:26:38Z", "ms": 372731197758.7979 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-24", "window": { "start": { "local": "1981-10-24T17:50:31-05:00", "utc": "1981-10-24T22:50:31Z", "ms": 372811831370.175 }, "end": { "local": "1981-10-24T19:26:27-05:00", "utc": "1981-10-25T00:26:27Z", "ms": 372817586681.8779 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:47 on Fri 23 Oct to 10:35 on Sat 24 Oct.", "fact": "1981-10-23T14:46:33Z → 1981-10-24T15:35:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:27 on the 23rd, 17:51–19:26 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 23rd and 0 of 96 on the 24th.", "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 26114 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Cali, 1981: Friday 23 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-23", "confidence": "determinate" } ], "quote": "In Cali, Govatsa Dvādaśī (Vasu Baras) 1981 falls on Friday 23 October. Dvādaśī runs from 09:47 on Fri 23 Oct to 10:35 on Sat 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21787, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 }, "end": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 }, "end": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-24", "window": { "start": { "local": "1981-10-24T17:50:31-05:00", "utc": "1981-10-24T22:50:31Z", "ms": 372811831370.175 }, "end": { "local": "1981-10-24T19:26:27-05:00", "utc": "1981-10-25T00:26:27Z", "ms": 372817586681.8779 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-25", "window": { "start": { "local": "1981-10-25T17:50:20-05:00", "utc": "1981-10-25T22:50:20Z", "ms": 372898219681.11066 }, "end": { "local": "1981-10-25T19:26:16-05:00", "utc": "1981-10-26T00:26:16Z", "ms": 372903976354.913 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:35 on Sat 24 Oct to 11:47 on Sun 25 Oct.", "fact": "1981-10-24T15:35:17Z → 1981-10-25T16:47:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:26 on the 24th, 17:50–19:26 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 96 of 96 minutes on the 24th and 0 of 96 on the 25th.", "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 21787 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Cali, 1981: Saturday 24 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-24", "confidence": "determinate" } ], "quote": "In Cali, Yama Dīpadāna 1981 falls on Saturday 24 October. Trayodaśī runs from 10:35 on Sat 24 Oct to 11:47 on Sun 25 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-10-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21787, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 }, "end": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-24T10:35:17-05:00", "utc": "1981-10-24T15:35:17Z", "ms": 372785717161.5931 }, "end": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-24", "window": { "start": { "local": "1981-10-24T17:50:31-05:00", "utc": "1981-10-24T22:50:31Z", "ms": 372811831370.175 }, "end": { "local": "1981-10-24T19:26:27-05:00", "utc": "1981-10-25T00:26:27Z", "ms": 372817586681.8779 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-25", "window": { "start": { "local": "1981-10-25T17:50:20-05:00", "utc": "1981-10-25T22:50:20Z", "ms": 372898219681.11066 }, "end": { "local": "1981-10-25T19:26:16-05:00", "utc": "1981-10-26T00:26:16Z", "ms": 372903976354.913 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:35 on Sat 24 Oct to 11:47 on Sun 25 Oct.", "fact": "1981-10-24T15:35:17Z → 1981-10-25T16:47:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:26 on the 24th, 17:50–19:26 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 96 of 96 minutes on the 24th and 0 of 96 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 21787 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Saturday 24 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": "1981-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-24", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Saturday 24 October. Trayodaśī runs from 10:35 on Sat 24 Oct to 11:47 on Sun 25 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-10-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-10-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36340, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "end": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "end": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 } }, "kaala": "nishita", "days": [ { "local_date": "1981-10-25", "window": { "start": { "local": "1981-10-25T23:26:07-05:00", "utc": "1981-10-26T04:26:07Z", "ms": 372918367207.8695 }, "end": { "local": "1981-10-26T00:14:07-05:00", "utc": "1981-10-26T05:14:07Z", "ms": 372921247207.8695 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-10-26", "window": { "start": { "local": "1981-10-26T23:26:01-05:00", "utc": "1981-10-27T04:26:01Z", "ms": 373004761360.9681 }, "end": { "local": "1981-10-27T00:14:01-05:00", "utc": "1981-10-27T05:14:01Z", "ms": 373007641360.9681 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:47 on Sun 25 Oct to 13:20 on Mon 26 Oct.", "fact": "1981-10-25T16:47:13Z → 1981-10-26T18:20:22Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 25th, 23:26–00:14 on the 26th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36340 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Sunday 25 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": "1981-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-25", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Sunday 25 October. Caturdaśī runs from 11:47 on Sun 25 Oct to 13:20 on Mon 26 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-10-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21437, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "end": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-25T11:47:13-05:00", "utc": "1981-10-25T16:47:13Z", "ms": 372876432923.1547 }, "end": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 } }, "kaala": "arunodaya", "days": [ { "local_date": "1981-10-25", "window": { "start": { "local": "1981-10-25T04:14:01-05:00", "utc": "1981-10-25T09:14:01Z", "ms": 372849240896.2441 }, "end": { "local": "1981-10-25T05:49:56-05:00", "utc": "1981-10-25T10:49:56Z", "ms": 372854996207.947 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1981-10-26", "window": { "start": { "local": "1981-10-26T04:13:58-05:00", "utc": "1981-10-26T09:13:58Z", "ms": 372935638060.826 }, "end": { "local": "1981-10-26T05:49:55-05:00", "utc": "1981-10-26T10:49:55Z", "ms": 372941394734.62836 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:47 on Sun 25 Oct to 13:20 on Mon 26 Oct.", "fact": "1981-10-25T16:47:13Z → 1981-10-26T18:20:22Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:14–05:50 on the 25th, 04:14–05:50 on the 26th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 96 minutes on the 25th and 96 of 96 on the 26th.", "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 21437 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Cali, 1981: Monday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-26", "confidence": "determinate" } ], "quote": "In Cali, Naraka Caturdaśī (Choti Diwali) 1981 falls on Monday 26 October. Caturdaśī runs from 11:47 on Sun 25 Oct to 13:20 on Mon 26 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9402, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "end": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "end": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-26", "window": { "start": { "local": "1981-10-26T17:50:09-05:00", "utc": "1981-10-26T22:50:09Z", "ms": 372984608763.2226 }, "end": { "local": "1981-10-26T19:26:07-05:00", "utc": "1981-10-27T00:26:07Z", "ms": 372990366789.2881 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-27", "window": { "start": { "local": "1981-10-27T17:49:59-05:00", "utc": "1981-10-27T22:49:59Z", "ms": 373070998627.6824 }, "end": { "local": "1981-10-27T19:25:58-05:00", "utc": "1981-10-28T00:25:58Z", "ms": 373076757995.74554 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 13:20 on Mon 26 Oct to 15:13 on Tue 27 Oct.", "fact": "1981-10-26T18:20:22Z → 1981-10-27T20:13:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:26 on the 26th, 17:50–19:26 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 96 of 96 minutes on the 26th and 0 of 96 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 9402 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Cali, 1981: Monday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-26", "confidence": "determinate" } ], "quote": "In Cali, Lakṣmī Pūjā (Diwali) 1981 falls on Monday 26 October. Amāvasyā runs from 13:20 on Mon 26 Oct to 15:13 on Tue 27 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29560, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "end": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-26T13:20:22-05:00", "utc": "1981-10-26T18:20:22Z", "ms": 372968421698.4843 }, "end": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 } }, "kaala": "nishita", "days": [ { "local_date": "1981-10-26", "window": { "start": { "local": "1981-10-26T23:26:01-05:00", "utc": "1981-10-27T04:26:01Z", "ms": 373004761360.9681 }, "end": { "local": "1981-10-27T00:14:01-05:00", "utc": "1981-10-27T05:14:01Z", "ms": 373007641360.9681 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-10-27", "window": { "start": { "local": "1981-10-27T23:25:56-05:00", "utc": "1981-10-28T04:25:56Z", "ms": 373091156257.9192 }, "end": { "local": "1981-10-28T00:13:56-05:00", "utc": "1981-10-28T05:13:56Z", "ms": 373094036257.9192 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 13:20 on Mon 26 Oct to 15:13 on Tue 27 Oct.", "fact": "1981-10-26T18:20:22Z → 1981-10-27T20:13:16Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 26th, 23:26–00:14 on the 27th.", "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 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: unstated → only-day · margin 29560 s" }, { "step": "ruling", "text": "Kālī Pūjā, Cali, 1981: Monday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-26", "confidence": "determinate" } ], "quote": "In Cali, Kālī Pūjā 1981 falls on Monday 26 October. Amāvasyā runs from 13:20 on Mon 26 Oct to 15:13 on Tue 27 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1529, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-10-27", "window": { "start": { "local": "1981-10-27T17:49:59-05:00", "utc": "1981-10-27T22:49:59Z", "ms": 373070998627.6824 }, "end": { "local": "1981-10-27T19:25:58-05:00", "utc": "1981-10-28T00:25:58Z", "ms": 373076757995.74554 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1981-10-28", "window": { "start": { "local": "1981-10-28T17:49:49-05:00", "utc": "1981-10-28T22:49:49Z", "ms": 373157389285.0988 }, "end": { "local": "1981-10-28T19:25:50-05:00", "utc": "1981-10-29T00:25:50Z", "ms": 373163149984.4603 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct.", "fact": "1981-10-27T20:13:16Z → 1981-10-28T22:24:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:26 on the 27th, 17:50–19:26 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 96 of 96 minutes on the 27th and 0 of 96 on the 28th.", "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 1529 s" }, { "step": "ruling", "text": "Bali Pūjā, Cali, 1981: Tuesday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-27", "confidence": "determinate" } ], "quote": "In Cali, Bali Pūjā 1981 falls on Tuesday 27 October. Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10760, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-27", "window": { "start": { "local": "1981-10-27T11:25:56-05:00", "utc": "1981-10-27T16:25:56Z", "ms": 373047956293.198 }, "end": { "local": "1981-10-27T12:13:56-05:00", "utc": "1981-10-27T17:13:56Z", "ms": 373050836293.198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-28", "window": { "start": { "local": "1981-10-28T11:25:52-05:00", "utc": "1981-10-28T16:25:52Z", "ms": 373134351586.62744 }, "end": { "local": "1981-10-28T12:13:52-05:00", "utc": "1981-10-28T17:13:52Z", "ms": 373137231586.62744 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct.", "fact": "1981-10-27T20:13:16Z → 1981-10-28T22:24:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 27th, 11:26–12:14 on the 28th.", "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 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10760 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Cali, 1981: Wednesday 28 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-28", "confidence": "determinate" } ], "quote": "In Cali, Govardhana Pūjā 1981 falls on Wednesday 28 October. Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19401, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-27T15:13:16-05:00", "utc": "1981-10-27T20:13:16Z", "ms": 373061596203.19244 }, "end": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 } }, "kaala": "purvahna", "days": [ { "local_date": "1981-10-27", "window": { "start": { "local": "1981-10-27T05:49:54-05:00", "utc": "1981-10-27T10:49:54Z", "ms": 373027793958.71356 }, "end": { "local": "1981-10-27T09:49:56-05:00", "utc": "1981-10-27T14:49:56Z", "ms": 373042195515.0365 } }, "covered_min": 0, "window_min": 240, "qualifies": false }, { "local_date": "1981-10-28", "window": { "start": { "local": "1981-10-28T05:49:54-05:00", "utc": "1981-10-28T10:49:54Z", "ms": 373114193888.15607 }, "end": { "local": "1981-10-28T09:49:52-05:00", "utc": "1981-10-28T14:49:52Z", "ms": 373128592353.80365 } }, "covered_min": 240, "window_min": 240, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct.", "fact": "1981-10-27T20:13:16Z → 1981-10-28T22:24:20Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:50–09:50 on the 27th, 05:50–09:50 on the 28th.", "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 240 minutes on the 27th and 240 of 240 on the 28th.", "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 19401 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Cali, 1981: Wednesday 28 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-28", "confidence": "determinate" } ], "quote": "In Cali, Dyūta Pratipad 1981 falls on Wednesday 28 October. Pratipadā runs from 15:13 on Tue 27 Oct to 17:24 on Wed 28 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18628, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 }, "end": { "local": "1981-10-29T19:50:50-05:00", "utc": "1981-10-30T00:50:50Z", "ms": 373251050186.00385 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-28T17:24:20-05:00", "utc": "1981-10-28T22:24:20Z", "ms": 373155859951.86774 }, "end": { "local": "1981-10-29T19:50:50-05:00", "utc": "1981-10-30T00:50:50Z", "ms": 373251050186.00385 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-28", "window": { "start": { "local": "1981-10-28T11:25:52-05:00", "utc": "1981-10-28T16:25:52Z", "ms": 373134351586.62744 }, "end": { "local": "1981-10-28T12:13:52-05:00", "utc": "1981-10-28T17:13:52Z", "ms": 373137231586.62744 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-29", "window": { "start": { "local": "1981-10-29T11:25:48-05:00", "utc": "1981-10-29T16:25:48Z", "ms": 373220747637.9452 }, "end": { "local": "1981-10-29T12:13:48-05:00", "utc": "1981-10-29T17:13:48Z", "ms": 373223627637.9452 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 17:24 on Wed 28 Oct to 19:51 on Thu 29 Oct.", "fact": "1981-10-28T22:24:20Z → 1981-10-30T00:50:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 28th, 11:26–12:14 on the 29th.", "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 28th and 48 of 48 on the 29th.", "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 18628 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Cali, 1981: Thursday 29 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-29", "confidence": "determinate" } ], "quote": "In Cali, Yama Dvitīyā (Bhai Dooj) 1981 falls on Thursday 29 October. Dvitīyā runs from 17:24 on Wed 28 Oct to 19:51 on Thu 29 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36854, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-10-30T22:27:59-05:00", "utc": "1981-10-31T03:27:59Z", "ms": 373346878507.825 }, "end": { "local": "1981-11-01T01:08:09-05:00", "utc": "1981-11-01T06:08:09Z", "ms": 373442889074.2237 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-30T22:27:59-05:00", "utc": "1981-10-31T03:27:59Z", "ms": 373346878507.825 }, "end": { "local": "1981-11-01T01:08:09-05:00", "utc": "1981-11-01T06:08:09Z", "ms": 373442889074.2237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-30", "window": { "start": { "local": "1981-10-30T11:25:44-05:00", "utc": "1981-10-30T16:25:44Z", "ms": 373307144455.3863 }, "end": { "local": "1981-10-30T12:13:44-05:00", "utc": "1981-10-30T17:13:44Z", "ms": 373310024455.3863 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-31", "window": { "start": { "local": "1981-10-31T11:25:42-05:00", "utc": "1981-10-31T16:25:42Z", "ms": 373393542046.7265 }, "end": { "local": "1981-10-31T12:13:42-05:00", "utc": "1981-10-31T17:13:42Z", "ms": 373396422046.7265 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:28 on Fri 30 Oct to 01:08 on Sun 1 Nov.", "fact": "1981-10-31T03:27:59Z → 1981-11-01T06:08:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 30th, 11:26–12:14 on the 31st.", "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 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36854 s" }, { "step": "ruling", "text": "Nāga Caturthī, Cali, 1981: Saturday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-31", "confidence": "determinate" } ], "quote": "In Cali, Nāga Caturthī 1981 falls on Saturday 31 October. Caturthī runs from 22:28 on Fri 30 Oct to 01:08 on Sun 1 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-10-31", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36854, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-10-30T22:27:59-05:00", "utc": "1981-10-31T03:27:59Z", "ms": 373346878507.825 }, "end": { "local": "1981-11-01T01:08:09-05:00", "utc": "1981-11-01T06:08:09Z", "ms": 373442889074.2237 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-10-30T22:27:59-05:00", "utc": "1981-10-31T03:27:59Z", "ms": 373346878507.825 }, "end": { "local": "1981-11-01T01:08:09-05:00", "utc": "1981-11-01T06:08:09Z", "ms": 373442889074.2237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-10-30", "window": { "start": { "local": "1981-10-30T11:25:44-05:00", "utc": "1981-10-30T16:25:44Z", "ms": 373307144455.3863 }, "end": { "local": "1981-10-30T12:13:44-05:00", "utc": "1981-10-30T17:13:44Z", "ms": 373310024455.3863 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-10-31", "window": { "start": { "local": "1981-10-31T11:25:42-05:00", "utc": "1981-10-31T16:25:42Z", "ms": 373393542046.7265 }, "end": { "local": "1981-10-31T12:13:42-05:00", "utc": "1981-10-31T17:13:42Z", "ms": 373396422046.7265 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:28 on Fri 30 Oct to 01:08 on Sun 1 Nov.", "fact": "1981-10-31T03:27:59Z → 1981-11-01T06:08:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 30th, 11:26–12:14 on the 31st.", "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 30th and 48 of 48 on the 31st.", "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 36854 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Saturday 31 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": "1981-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-10-31", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Saturday 31 October. Caturthī runs from 22:28 on Fri 30 Oct to 01:08 on Sun 1 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-10-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19905, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-11-02T03:40:56-05:00", "utc": "1981-11-02T08:40:56Z", "ms": 373538456005.62634 }, "end": { "local": "1981-11-03T05:53:55-05:00", "utc": "1981-11-03T10:53:55Z", "ms": 373632834771.22253 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-02T03:40:56-05:00", "utc": "1981-11-02T08:40:56Z", "ms": 373538456005.62634 }, "end": { "local": "1981-11-03T05:53:55-05:00", "utc": "1981-11-03T10:53:55Z", "ms": 373632834771.22253 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-02", "window": { "start": { "local": "1981-11-02T11:25:40-05:00", "utc": "1981-11-02T16:25:40Z", "ms": 373566339579.7975 }, "end": { "local": "1981-11-02T12:13:40-05:00", "utc": "1981-11-02T17:13:40Z", "ms": 373569219579.7975 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-11-03", "window": { "start": { "local": "1981-11-03T11:25:40-05:00", "utc": "1981-11-03T16:25:40Z", "ms": 373652739535.0945 }, "end": { "local": "1981-11-03T12:13:40-05:00", "utc": "1981-11-03T17:13:40Z", "ms": 373655619535.0945 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:41 on Mon 2 Nov to 05:54 on Tue 3 Nov.", "fact": "1981-11-02T08:40:56Z → 1981-11-03T10:53:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 2nd, 11:26–12:14 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19905 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Cali, 1981: Monday 2 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": "1981-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-02", "confidence": "determinate" } ], "quote": "In Cali, Sūrya Ṣaṣṭhī (Chhath) 1981 falls on Monday 2 November. Ṣaṣṭhī runs from 03:41 on Mon 2 Nov to 05:54 on Tue 3 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10453, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1981-11-04T07:34:24-05:00", "utc": "1981-11-04T12:34:24Z", "ms": 373725263750.8933 }, "end": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-04T07:34:24-05:00", "utc": "1981-11-04T12:34:24Z", "ms": 373725263750.8933 }, "end": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-04", "window": { "start": { "local": "1981-11-04T11:25:40-05:00", "utc": "1981-11-04T16:25:40Z", "ms": 373739140291.27637 }, "end": { "local": "1981-11-04T12:13:40-05:00", "utc": "1981-11-04T17:13:40Z", "ms": 373742020291.27637 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-11-05", "window": { "start": { "local": "1981-11-05T11:25:42-05:00", "utc": "1981-11-05T16:25:42Z", "ms": 373825541854.2401 }, "end": { "local": "1981-11-05T12:13:42-05:00", "utc": "1981-11-05T17:13:42Z", "ms": 373828421854.2401 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 07:34 on Wed 4 Nov to 08:31 on Thu 5 Nov.", "fact": "1981-11-04T12:34:24Z → 1981-11-05T13:31:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 4th, 11:26–12:14 on the 5th.", "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 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10453 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Cali, 1981: Wednesday 4 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": "1981-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-04", "confidence": "determinate" } ], "quote": "In Cali, Gopāṣṭamī 1981 falls on Wednesday 4 November. Aṣṭamī runs from 07:34 on Wed 4 Nov to 08:31 on Thu 5 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10075, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 }, "end": { "local": "1981-11-06T08:37:49-05:00", "utc": "1981-11-06T13:37:49Z", "ms": 373901869303.164 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 }, "end": { "local": "1981-11-06T08:37:49-05:00", "utc": "1981-11-06T13:37:49Z", "ms": 373901869303.164 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-05", "window": { "start": { "local": "1981-11-05T11:25:42-05:00", "utc": "1981-11-05T16:25:42Z", "ms": 373825541854.2401 }, "end": { "local": "1981-11-05T12:13:42-05:00", "utc": "1981-11-05T17:13:42Z", "ms": 373828421854.2401 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-11-06", "window": { "start": { "local": "1981-11-06T11:25:44-05:00", "utc": "1981-11-06T16:25:44Z", "ms": 373911944229.7019 }, "end": { "local": "1981-11-06T12:13:44-05:00", "utc": "1981-11-06T17:13:44Z", "ms": 373914824229.7019 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 08:31 on Thu 5 Nov to 08:38 on Fri 6 Nov.", "fact": "1981-11-05T13:31:29Z → 1981-11-06T13:37:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 5th, 11:26–12:14 on the 6th.", "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 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10075 s" }, { "step": "ruling", "text": "Durgā Navamī, Cali, 1981: Thursday 5 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": "1981-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-05", "confidence": "determinate" } ], "quote": "In Cali, Durgā Navamī 1981 falls on Thursday 5 November. Navamī runs from 08:31 on Thu 5 Nov to 08:38 on Fri 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-06", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 4329, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 }, "end": { "local": "1981-11-06T08:37:49-05:00", "utc": "1981-11-06T13:37:49Z", "ms": 373901869303.164 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-05T08:31:29-05:00", "utc": "1981-11-05T13:31:29Z", "ms": 373815088626.5321 }, "end": { "local": "1981-11-06T08:37:49-05:00", "utc": "1981-11-06T13:37:49Z", "ms": 373901869303.164 } }, "kaala": "purvahna", "days": [ { "local_date": "1981-11-05", "window": { "start": { "local": "1981-11-05T05:50:19-05:00", "utc": "1981-11-05T10:50:19Z", "ms": 373805419493.27765 }, "end": { "local": "1981-11-05T09:49:54-05:00", "utc": "1981-11-05T14:49:54Z", "ms": 373819794400.586 } }, "covered_min": 78, "window_min": 240, "qualifies": true }, { "local_date": "1981-11-06", "window": { "start": { "local": "1981-11-06T05:50:26-05:00", "utc": "1981-11-06T10:50:26Z", "ms": 373891826043.7692 }, "end": { "local": "1981-11-06T09:49:58-05:00", "utc": "1981-11-06T14:49:58Z", "ms": 373906198167.72437 } }, "covered_min": 167, "window_min": 240, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 08:31 on Thu 5 Nov to 08:38 on Fri 6 Nov.", "fact": "1981-11-05T13:31:29Z → 1981-11-06T13:37:49Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:50–09:50 on the 5th, 05:50–09:50 on the 6th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 78 of 240 minutes on the 5th and 167 of 240 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 4329 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Cali, 1981: Friday 6 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-11-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-06", "confidence": "boundary" } ], "quote": "In Cali, Akṣaya Navamī (Amla Navami) 1981 falls on Friday 6 November. Navamī runs from 08:31 on Thu 5 Nov to 08:38 on Fri 6 Nov and covers 167 of 240 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 78 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/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-11-08", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1257, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-11-07T07:50:38-05:00", "utc": "1981-11-07T12:50:38Z", "ms": 373985437639.2032 }, "end": { "local": "1981-11-08T06:11:38-05:00", "utc": "1981-11-08T11:11:38Z", "ms": 374065898309.86774 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-07T07:50:38-05:00", "utc": "1981-11-07T12:50:38Z", "ms": 373985437639.2032 }, "end": { "local": "1981-11-08T06:11:38-05:00", "utc": "1981-11-08T11:11:38Z", "ms": 374065898309.86774 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-11-07", "window": { "start": { "local": "1981-11-07T05:50:33-05:00", "utc": "1981-11-07T10:50:33Z", "ms": 373978233353.06537 }, "end": { "local": "1981-11-07T05:50:33-05:00", "utc": "1981-11-07T10:50:33Z", "ms": 373978233353.06537 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-11-08", "window": { "start": { "local": "1981-11-08T05:50:41-05:00", "utc": "1981-11-08T10:50:41Z", "ms": 374064641425.1949 }, "end": { "local": "1981-11-08T05:50:41-05:00", "utc": "1981-11-08T10:50:41Z", "ms": 374064641425.1949 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:51 on Sat 7 Nov to 06:12 on Sun 8 Nov.", "fact": "1981-11-07T12:50:38Z → 1981-11-08T11:11:38Z" }, { "step": "kaala", "text": "Sunrise is at 05:51 on the 7th and 05:51 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1257 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Cali, 1981: Sunday 8 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": "1981-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-08", "confidence": "determinate" } ], "quote": "In Cali, Prabodhinī Ekādaśī 1981 falls on Sunday 8 November. Ekādaśī runs from 07:51 on Sat 7 Nov to 06:12 on Sun 8 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-11-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-11-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19093, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-11-09T03:46:27-05:00", "utc": "1981-11-09T08:46:27Z", "ms": 374143587343.6004 }, "end": { "local": "1981-11-10T00:43:31-05:00", "utc": "1981-11-10T05:43:31Z", "ms": 374219011447.3523 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-09T03:46:27-05:00", "utc": "1981-11-09T08:46:27Z", "ms": 374143587343.6004 }, "end": { "local": "1981-11-10T00:43:31-05:00", "utc": "1981-11-10T05:43:31Z", "ms": 374219011447.3523 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-11-08", "window": { "start": { "local": "1981-11-08T17:49:01-05:00", "utc": "1981-11-08T22:49:01Z", "ms": 374107741456.7809 }, "end": { "local": "1981-11-08T19:25:16-05:00", "utc": "1981-11-09T00:25:16Z", "ms": 374113515964.469 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1981-11-09", "window": { "start": { "local": "1981-11-09T17:49:02-05:00", "utc": "1981-11-09T22:49:02Z", "ms": 374194142312.9794 }, "end": { "local": "1981-11-09T19:25:18-05:00", "utc": "1981-11-10T00:25:18Z", "ms": 374199917987.9687 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:46 on Mon 9 Nov to 00:44 on Tue 10 Nov.", "fact": "1981-11-09T08:46:27Z → 1981-11-10T05:43:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:49–19:25 on the 8th, 17:49–19:25 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 8th and 96 of 96 on the 9th.", "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 19093 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Monday 9 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": "1981-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-09", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Monday 9 November. Trayodaśī runs from 03:46 on Mon 9 Nov to 00:44 on Tue 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-11-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7980, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-11-10T21:13:07-05:00", "utc": "1981-11-11T02:13:07Z", "ms": 374292787116.7033 }, "end": { "local": "1981-11-11T17:26:29-05:00", "utc": "1981-11-11T22:26:29Z", "ms": 374365589316.83636 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-10T21:13:07-05:00", "utc": "1981-11-11T02:13:07Z", "ms": 374292787116.7033 }, "end": { "local": "1981-11-11T17:26:29-05:00", "utc": "1981-11-11T22:26:29Z", "ms": 374365589316.83636 } }, "kaala": "nishita", "days": [ { "local_date": "1981-11-10", "window": { "start": { "local": "1981-11-10T23:26:07-05:00", "utc": "1981-11-11T04:26:07Z", "ms": 374300767166.5769 }, "end": { "local": "1981-11-11T00:14:07-05:00", "utc": "1981-11-11T05:14:07Z", "ms": 374303647166.5769 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-11-11", "window": { "start": { "local": "1981-11-11T23:26:14-05:00", "utc": "1981-11-12T04:26:14Z", "ms": 374387174084.08307 }, "end": { "local": "1981-11-12T00:14:14-05:00", "utc": "1981-11-12T05:14:14Z", "ms": 374390054084.08307 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:13 on Tue 10 Nov to 17:26 on Wed 11 Nov.", "fact": "1981-11-11T02:13:07Z → 1981-11-11T22:26:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 10th, 23:26–00:14 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7980 s" }, { "step": "ruling", "text": "Rāsayātrā, Cali, 1981: Tuesday 10 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": "1981-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-10", "confidence": "determinate" } ], "quote": "In Cali, Rāsayātrā 1981 falls on Tuesday 10 November. Pūrṇimā runs from 21:13 on Tue 10 Nov to 17:26 on Wed 11 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18741, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-11-10T21:13:07-05:00", "utc": "1981-11-11T02:13:07Z", "ms": 374292787116.7033 }, "end": { "local": "1981-11-11T17:26:29-05:00", "utc": "1981-11-11T22:26:29Z", "ms": 374365589316.83636 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1981-11-10T21:13:07-05:00", "utc": "1981-11-11T02:13:07Z", "ms": 374292787116.7033 }, "end": { "local": "1981-11-11T17:26:29-05:00", "utc": "1981-11-11T22:26:29Z", "ms": 374365589316.83636 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-10", "window": { "start": { "local": "1981-11-10T11:26:02-05:00", "utc": "1981-11-10T16:26:02Z", "ms": 374257561972.85803 }, "end": { "local": "1981-11-10T12:14:02-05:00", "utc": "1981-11-10T17:14:02Z", "ms": 374260441972.85803 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-11-11", "window": { "start": { "local": "1981-11-11T11:26:08-05:00", "utc": "1981-11-11T16:26:08Z", "ms": 374343968499.8345 }, "end": { "local": "1981-11-11T12:14:08-05:00", "utc": "1981-11-11T17:14:08Z", "ms": 374346848499.8345 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:13 on Tue 10 Nov to 17:26 on Wed 11 Nov.", "fact": "1981-11-11T02:13:07Z → 1981-11-11T22:26:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 10th, 11:26–12:14 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18741 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Cali, 1981: Wednesday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kartiki-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-11", "confidence": "determinate" } ], "quote": "In Cali, Kārtikī Pūrṇimā 1981 falls on Wednesday 11 November. Pūrṇimā runs from 21:13 on Tue 10 Nov to 17:26 on Wed 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-11-14", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23177, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-11-14T06:23:14-05:00", "utc": "1981-11-14T11:23:14Z", "ms": 374584994369.12 }, "end": { "local": "1981-11-15T03:22:43-05:00", "utc": "1981-11-15T08:22:43Z", "ms": 374660562791.789 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-14T06:23:14-05:00", "utc": "1981-11-14T11:23:14Z", "ms": 374584994369.12 }, "end": { "local": "1981-11-15T03:22:43-05:00", "utc": "1981-11-15T08:22:43Z", "ms": 374660562791.789 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-11-13", "window": { "start": { "local": "1981-11-13T19:54:33-05:00", "utc": "1981-11-14T00:54:33Z", "ms": 374547273393.1242 }, "end": { "local": "1981-11-13T19:54:33-05:00", "utc": "1981-11-14T00:54:33Z", "ms": 374547273393.1242 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-11-14", "window": { "start": { "local": "1981-11-14T20:56:25-05:00", "utc": "1981-11-15T01:56:25Z", "ms": 374637385391.41064 }, "end": { "local": "1981-11-14T20:56:25-05:00", "utc": "1981-11-15T01:56:25Z", "ms": 374637385391.41064 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:23 on Sat 14 Nov to 03:23 on Sun 15 Nov.", "fact": "1981-11-14T11:23:14Z → 1981-11-15T08:22:43Z" }, { "step": "kaala", "text": "Moonrise is at 19:55 on the 13th and 20:56 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 13th and is on the 14th.", "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 23177 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Saturday 14 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": "1981-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-14", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Saturday 14 November. Caturthī runs from 06:23 on Sat 14 Nov to 03:23 on Sun 15 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-11-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-11-21", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19007, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-11-20T23:08:59-05:00", "utc": "1981-11-21T04:08:59Z", "ms": 375163739180.96686 }, "end": { "local": "1981-11-22T00:37:09-05:00", "utc": "1981-11-22T05:37:09Z", "ms": 375255428815.07294 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-20T23:08:59-05:00", "utc": "1981-11-21T04:08:59Z", "ms": 375163739180.96686 }, "end": { "local": "1981-11-22T00:37:09-05:00", "utc": "1981-11-22T05:37:09Z", "ms": 375255428815.07294 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-11-21", "window": { "start": { "local": "1981-11-21T05:53:37-05:00", "utc": "1981-11-21T10:53:37Z", "ms": 375188017139.81573 }, "end": { "local": "1981-11-21T05:53:37-05:00", "utc": "1981-11-21T10:53:37Z", "ms": 375188017139.81573 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-11-22", "window": { "start": { "local": "1981-11-22T05:53:56-05:00", "utc": "1981-11-22T10:53:56Z", "ms": 375274436022.8454 }, "end": { "local": "1981-11-22T05:53:56-05:00", "utc": "1981-11-22T10:53:56Z", "ms": 375274436022.8454 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:09 on Fri 20 Nov to 00:37 on Sun 22 Nov.", "fact": "1981-11-21T04:08:59Z → 1981-11-22T05:37:09Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 21st and 05:54 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19007 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Cali, 1981: Saturday 21 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": "1981-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-21", "confidence": "determinate" } ], "quote": "In Cali, Utpannā Ekādaśī 1981 falls on Saturday 21 November. Ekādaśī runs from 23:09 on Fri 20 Nov to 00:37 on Sun 22 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-11-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-11-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25343, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-11-23T02:29:29-05:00", "utc": "1981-11-23T07:29:29Z", "ms": 375348569410.1628 }, "end": { "local": "1981-11-24T04:40:21-05:00", "utc": "1981-11-24T09:40:21Z", "ms": 375442820577.5106 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-23T02:29:29-05:00", "utc": "1981-11-23T07:29:29Z", "ms": 375348569410.1628 }, "end": { "local": "1981-11-24T04:40:21-05:00", "utc": "1981-11-24T09:40:21Z", "ms": 375442820577.5106 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-11-22", "window": { "start": { "local": "1981-11-22T17:50:37-05:00", "utc": "1981-11-22T22:50:37Z", "ms": 375317437126.3815 }, "end": { "local": "1981-11-22T19:27:06-05:00", "utc": "1981-11-23T00:27:06Z", "ms": 375323226259.41254 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1981-11-23", "window": { "start": { "local": "1981-11-23T17:50:51-05:00", "utc": "1981-11-23T22:50:51Z", "ms": 375403850817.65283 }, "end": { "local": "1981-11-23T19:27:21-05:00", "utc": "1981-11-24T00:27:21Z", "ms": 375409640832.2305 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:29 on Mon 23 Nov to 04:40 on Tue 24 Nov.", "fact": "1981-11-23T07:29:29Z → 1981-11-24T09:40:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:51–19:27 on the 22nd, 17:51–19:27 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 22nd and 97 of 97 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25343 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Monday 23 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": "1981-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-23", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Monday 23 November. Trayodaśī runs from 02:29 on Mon 23 Nov to 04:40 on Tue 24 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-11-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-11-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15817, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-11-24T04:40:21-05:00", "utc": "1981-11-24T09:40:21Z", "ms": 375442820577.5106 }, "end": { "local": "1981-11-25T07:04:46-05:00", "utc": "1981-11-25T12:04:46Z", "ms": 375537885858.6212 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-24T04:40:21-05:00", "utc": "1981-11-24T09:40:21Z", "ms": 375442820577.5106 }, "end": { "local": "1981-11-25T07:04:46-05:00", "utc": "1981-11-25T12:04:46Z", "ms": 375537885858.6212 } }, "kaala": "nishita", "days": [ { "local_date": "1981-11-23", "window": { "start": { "local": "1981-11-23T23:28:43-05:00", "utc": "1981-11-24T04:28:43Z", "ms": 375424123372.3192 }, "end": { "local": "1981-11-24T00:16:43-05:00", "utc": "1981-11-24T05:16:43Z", "ms": 375427003372.3192 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-11-24", "window": { "start": { "local": "1981-11-24T23:29:01-05:00", "utc": "1981-11-25T04:29:01Z", "ms": 375510541146.9292 }, "end": { "local": "1981-11-25T00:17:01-05:00", "utc": "1981-11-25T05:17:01Z", "ms": 375513421146.9292 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:40 on Tue 24 Nov to 07:05 on Wed 25 Nov.", "fact": "1981-11-24T09:40:21Z → 1981-11-25T12:04:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:29–00:17 on the 23rd, 23:29–00:17 on the 24th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15817 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Tuesday 24 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": "1981-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-24", "confidence": "determinate" } ], "quote": "In Cali, Śivarātri 1981 falls on Tuesday 24 November. Caturdaśī runs from 04:40 on Tue 24 Nov to 07:05 on Wed 25 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/cali/festivals/1981/shivaratri?on=1981-11-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-11-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18374, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-11-29T17:24:43-05:00", "utc": "1981-11-29T22:24:43Z", "ms": 375920682799.7265 }, "end": { "local": "1981-11-30T19:39:50-05:00", "utc": "1981-12-01T00:39:50Z", "ms": 376015189856.88855 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-29T17:24:43-05:00", "utc": "1981-11-29T22:24:43Z", "ms": 375920682799.7265 }, "end": { "local": "1981-11-30T19:39:50-05:00", "utc": "1981-12-01T00:39:50Z", "ms": 376015189856.88855 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-29", "window": { "start": { "local": "1981-11-29T11:30:29-05:00", "utc": "1981-11-29T16:30:29Z", "ms": 375899428992.9028 }, "end": { "local": "1981-11-29T12:18:29-05:00", "utc": "1981-11-29T17:18:29Z", "ms": 375902308992.9028 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-11-30", "window": { "start": { "local": "1981-11-30T11:30:51-05:00", "utc": "1981-11-30T16:30:51Z", "ms": 375985850754.06226 }, "end": { "local": "1981-11-30T12:18:51-05:00", "utc": "1981-11-30T17:18:51Z", "ms": 375988730754.06226 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:25 on Sun 29 Nov to 19:40 on Mon 30 Nov.", "fact": "1981-11-29T22:24:43Z → 1981-12-01T00:39:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 29th, 11:31–12:19 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18374 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Monday 30 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": "1981-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-11-30", "confidence": "determinate" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Monday 30 November. Caturthī runs from 17:25 on Sun 29 Nov to 19:40 on Mon 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-11-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26459, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1981-11-30T19:39:50-05:00", "utc": "1981-12-01T00:39:50Z", "ms": 376015189856.88855 }, "end": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-11-30T19:39:50-05:00", "utc": "1981-12-01T00:39:50Z", "ms": 376015189856.88855 }, "end": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-11-30", "window": { "start": { "local": "1981-11-30T11:30:51-05:00", "utc": "1981-11-30T16:30:51Z", "ms": 375985850754.06226 }, "end": { "local": "1981-11-30T12:18:51-05:00", "utc": "1981-11-30T17:18:51Z", "ms": 375988730754.06226 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-12-01", "window": { "start": { "local": "1981-12-01T11:31:13-05:00", "utc": "1981-12-01T16:31:13Z", "ms": 376072273160.9429 }, "end": { "local": "1981-12-01T12:19:13-05:00", "utc": "1981-12-01T17:19:13Z", "ms": 376075153160.9429 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 19:40 on Mon 30 Nov to 21:30 on Tue 1 Dec.", "fact": "1981-12-01T00:39:50Z → 1981-12-02T02:30:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 30th, 11:31–12:19 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26459 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Cali, 1981: Tuesday 1 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": "1981-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-01", "confidence": "determinate" } ], "quote": "In Cali, Nāga Pañcamī (Mārgaśīrṣa) 1981 falls on Tuesday 1 December. Pañcamī runs from 19:40 on Mon 30 Nov to 21:30 on Tue 1 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33070, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 }, "end": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 }, "end": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-12-01", "window": { "start": { "local": "1981-12-01T11:31:13-05:00", "utc": "1981-12-01T16:31:13Z", "ms": 376072273160.9429 }, "end": { "local": "1981-12-01T12:19:13-05:00", "utc": "1981-12-01T17:19:13Z", "ms": 376075153160.9429 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-12-02", "window": { "start": { "local": "1981-12-02T11:31:36-05:00", "utc": "1981-12-02T16:31:36Z", "ms": 376158696189.53076 }, "end": { "local": "1981-12-02T12:19:36-05:00", "utc": "1981-12-02T17:19:36Z", "ms": 376161576189.53076 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:30 on Tue 1 Dec to 22:47 on Wed 2 Dec.", "fact": "1981-12-02T02:30:23Z → 1981-12-03T03:47:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 1st, 11:32–12:20 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33070 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Cali, 1981: Wednesday 2 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": "1981-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-02", "confidence": "determinate" } ], "quote": "In Cali, Campā Ṣaṣṭhī 1981 falls on Wednesday 2 December. Ṣaṣṭhī runs from 21:30 on Tue 1 Dec to 22:47 on Wed 2 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33070, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 }, "end": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-01T21:30:23-05:00", "utc": "1981-12-02T02:30:23Z", "ms": 376108223046.49054 }, "end": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-12-01", "window": { "start": { "local": "1981-12-01T11:31:13-05:00", "utc": "1981-12-01T16:31:13Z", "ms": 376072273160.9429 }, "end": { "local": "1981-12-01T12:19:13-05:00", "utc": "1981-12-01T17:19:13Z", "ms": 376075153160.9429 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-12-02", "window": { "start": { "local": "1981-12-02T11:31:36-05:00", "utc": "1981-12-02T16:31:36Z", "ms": 376158696189.53076 }, "end": { "local": "1981-12-02T12:19:36-05:00", "utc": "1981-12-02T17:19:36Z", "ms": 376161576189.53076 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:30 on Tue 1 Dec to 22:47 on Wed 2 Dec.", "fact": "1981-12-02T02:30:23Z → 1981-12-03T03:47:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 1st, 11:32–12:20 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33070 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Cali, 1981: Wednesday 2 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": "1981-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-02", "confidence": "determinate" } ], "quote": "In Cali, Skanda Ṣaṣṭhī 1981 falls on Wednesday 2 December. Ṣaṣṭhī runs from 21:30 on Tue 1 Dec to 22:47 on Wed 2 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37651, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 }, "end": { "local": "1981-12-03T23:22:08-05:00", "utc": "1981-12-04T04:22:08Z", "ms": 376287728077.0888 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-02T22:47:07-05:00", "utc": "1981-12-03T03:47:07Z", "ms": 376199227304.56415 }, "end": { "local": "1981-12-03T23:22:08-05:00", "utc": "1981-12-04T04:22:08Z", "ms": 376287728077.0888 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-12-02", "window": { "start": { "local": "1981-12-02T11:31:36-05:00", "utc": "1981-12-02T16:31:36Z", "ms": 376158696189.53076 }, "end": { "local": "1981-12-02T12:19:36-05:00", "utc": "1981-12-02T17:19:36Z", "ms": 376161576189.53076 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-12-03", "window": { "start": { "local": "1981-12-03T11:32:00-05:00", "utc": "1981-12-03T16:32:00Z", "ms": 376245119815.183 }, "end": { "local": "1981-12-03T12:20:00-05:00", "utc": "1981-12-03T17:20:00Z", "ms": 376247999815.183 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:47 on Wed 2 Dec to 23:22 on Thu 3 Dec.", "fact": "1981-12-03T03:47:07Z → 1981-12-04T04:22:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 2nd, 11:32–12:20 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 37651 s" }, { "step": "ruling", "text": "Mitra Saptamī, Cali, 1981: Thursday 3 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": "1981-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-03", "confidence": "determinate" } ], "quote": "In Cali, Mitra Saptamī 1981 falls on Thursday 3 December. Saptamī runs from 22:47 on Wed 2 Dec to 23:22 on Thu 3 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/ekadashi?on=1981-12-07", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34716, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-12-06T20:21:18-05:00", "utc": "1981-12-07T01:21:18Z", "ms": 376536077658.26056 }, "end": { "local": "1981-12-07T17:51:09-05:00", "utc": "1981-12-07T22:51:09Z", "ms": 376613469314.172 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-06T20:21:18-05:00", "utc": "1981-12-07T01:21:18Z", "ms": 376536077658.26056 }, "end": { "local": "1981-12-07T17:51:09-05:00", "utc": "1981-12-07T22:51:09Z", "ms": 376613469314.172 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-12-07", "window": { "start": { "local": "1981-12-07T05:59:54-05:00", "utc": "1981-12-07T10:59:54Z", "ms": 376570793927.0296 }, "end": { "local": "1981-12-07T05:59:54-05:00", "utc": "1981-12-07T10:59:54Z", "ms": 376570793927.0296 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-12-08", "window": { "start": { "local": "1981-12-08T06:00:22-05:00", "utc": "1981-12-08T11:00:22Z", "ms": 376657221677.3947 }, "end": { "local": "1981-12-08T06:00:22-05:00", "utc": "1981-12-08T11:00:22Z", "ms": 376657221677.3947 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:21 on Sun 6 Dec to 17:51 on Mon 7 Dec.", "fact": "1981-12-07T01:21:18Z → 1981-12-07T22:51:09Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 7th and 06:00 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34716 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Cali, 1981: Monday 7 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": "1981-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-07", "confidence": "determinate" } ], "quote": "In Cali, Mokṣadā Ekādaśī 1981 falls on Monday 7 December. Ekādaśī runs from 20:21 on Sun 6 Dec to 17:51 on Mon 7 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-12-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8655, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1981-12-07T17:51:09-05:00", "utc": "1981-12-07T22:51:09Z", "ms": 376613469314.172 }, "end": { "local": "1981-12-08T14:46:21-05:00", "utc": "1981-12-08T19:46:21Z", "ms": 376688781145.28674 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-07T17:51:09-05:00", "utc": "1981-12-07T22:51:09Z", "ms": 376613469314.172 }, "end": { "local": "1981-12-08T14:46:21-05:00", "utc": "1981-12-08T19:46:21Z", "ms": 376688781145.28674 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-12-07", "window": { "start": { "local": "1981-12-07T11:33:40-05:00", "utc": "1981-12-07T16:33:40Z", "ms": 376590819783.4003 }, "end": { "local": "1981-12-07T12:21:40-05:00", "utc": "1981-12-07T17:21:40Z", "ms": 376593699783.4003 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1981-12-08", "window": { "start": { "local": "1981-12-08T11:34:06-05:00", "utc": "1981-12-08T16:34:06Z", "ms": 376677246015.6535 }, "end": { "local": "1981-12-08T12:22:06-05:00", "utc": "1981-12-08T17:22:06Z", "ms": 376680126015.6535 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:51 on Mon 7 Dec to 14:46 on Tue 8 Dec.", "fact": "1981-12-07T22:51:09Z → 1981-12-08T19:46:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 7th, 11:34–12:22 on the 8th.", "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 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8655 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Cali, 1981: Tuesday 8 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": "1981-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-08", "confidence": "determinate" } ], "quote": "In Cali, Akhaṇḍa Dvādaśī 1981 falls on Tuesday 8 December. Dvādaśī runs from 17:51 on Mon 7 Dec to 14:46 on Tue 8 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/pradosha-vrata?on=1981-12-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11369, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-12-08T14:46:21-05:00", "utc": "1981-12-08T19:46:21Z", "ms": 376688781145.28674 }, "end": { "local": "1981-12-09T11:16:09-05:00", "utc": "1981-12-09T16:16:09Z", "ms": 376762568628.0858 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-08T14:46:21-05:00", "utc": "1981-12-08T19:46:21Z", "ms": 376688781145.28674 }, "end": { "local": "1981-12-09T11:16:09-05:00", "utc": "1981-12-09T16:16:09Z", "ms": 376762568628.0858 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-12-08", "window": { "start": { "local": "1981-12-08T17:55:50-05:00", "utc": "1981-12-08T22:55:50Z", "ms": 376700150353.9123 }, "end": { "local": "1981-12-08T19:32:30-05:00", "utc": "1981-12-09T00:32:30Z", "ms": 376705950275.64435 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "1981-12-09", "window": { "start": { "local": "1981-12-09T17:56:16-05:00", "utc": "1981-12-09T22:56:16Z", "ms": 376786575622.33276 }, "end": { "local": "1981-12-09T19:32:56-05:00", "utc": "1981-12-10T00:32:56Z", "ms": 376792375962.0756 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:46 on Tue 8 Dec to 11:16 on Wed 9 Dec.", "fact": "1981-12-08T19:46:21Z → 1981-12-09T16:16:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:56–19:33 on the 8th, 17:56–19:33 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 8th and 0 of 97 on the 9th.", "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 11369 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Cali, 1981: Tuesday 8 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": "1981-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-08", "confidence": "determinate" } ], "quote": "In Cali, Śukla Pradoṣa Vrata 1981 falls on Tuesday 8 December. Trayodaśī runs from 14:46 on Tue 8 Dec to 11:16 on Wed 9 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-12-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29279, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1981-12-10T07:30:52-05:00", "utc": "1981-12-10T12:30:52Z", "ms": 376835451752.3243 }, "end": { "local": "1981-12-11T03:41:21-05:00", "utc": "1981-12-11T08:41:21Z", "ms": 376908081367.31335 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-10T07:30:52-05:00", "utc": "1981-12-10T12:30:52Z", "ms": 376835451752.3243 }, "end": { "local": "1981-12-11T03:41:21-05:00", "utc": "1981-12-11T08:41:21Z", "ms": 376908081367.31335 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-12-09", "window": { "start": { "local": "1981-12-09T17:56:16-05:00", "utc": "1981-12-09T22:56:16Z", "ms": 376786575622.33276 }, "end": { "local": "1981-12-09T19:32:56-05:00", "utc": "1981-12-10T00:32:56Z", "ms": 376792375962.0756 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1981-12-10", "window": { "start": { "local": "1981-12-10T17:56:41-05:00", "utc": "1981-12-10T22:56:41Z", "ms": 376873001422.1239 }, "end": { "local": "1981-12-10T19:33:22-05:00", "utc": "1981-12-11T00:33:22Z", "ms": 376878802147.56616 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:31 on Thu 10 Dec to 03:41 on Fri 11 Dec.", "fact": "1981-12-10T12:30:52Z → 1981-12-11T08:41:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:56–19:33 on the 9th, 17:57–19:33 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 97 minutes on the 9th and 97 of 97 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 29279 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Cali, 1981: Thursday 10 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": "1981-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-10", "confidence": "determinate" } ], "quote": "In Cali, Dattātreyotpatti (Datta Jayanti) 1981 falls on Thursday 10 December. Pūrṇimā runs from 07:31 on Thu 10 Dec to 03:41 on Fri 11 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/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": "/cali/festivals/1981/sankashta-chaturthi?on=1981-12-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11159, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-12-13T17:34:30-05:00", "utc": "1981-12-13T22:34:30Z", "ms": 377130869568.7105 }, "end": { "local": "1981-12-14T15:11:41-05:00", "utc": "1981-12-14T20:11:41Z", "ms": 377208701159.98047 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-13T17:34:30-05:00", "utc": "1981-12-13T22:34:30Z", "ms": 377130869568.7105 }, "end": { "local": "1981-12-14T15:11:41-05:00", "utc": "1981-12-14T20:11:41Z", "ms": 377208701159.98047 } }, "kaala": "moonrise", "days": [ { "local_date": "1981-12-13", "window": { "start": { "local": "1981-12-13T20:40:29-05:00", "utc": "1981-12-14T01:40:29Z", "ms": 377142028610.8095 }, "end": { "local": "1981-12-13T20:40:29-05:00", "utc": "1981-12-14T01:40:29Z", "ms": 377142028610.8095 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1981-12-14", "window": { "start": { "local": "1981-12-14T21:39:16-05:00", "utc": "1981-12-15T02:39:16Z", "ms": 377231955908.1684 }, "end": { "local": "1981-12-14T21:39:16-05:00", "utc": "1981-12-15T02:39:16Z", "ms": 377231955908.1684 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:34 on Sun 13 Dec to 15:12 on Mon 14 Dec.", "fact": "1981-12-13T22:34:30Z → 1981-12-14T20:11:41Z" }, { "step": "kaala", "text": "Moonrise is at 20:40 on the 13th and 21:39 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11159 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Cali, 1981: Sunday 13 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": "1981-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-13", "confidence": "determinate" } ], "quote": "In Cali, Saṅkaṣṭa Caturthī 1981 falls on Sunday 13 December. Caturthī runs from 17:34 on Sun 13 Dec to 15:12 on Mon 14 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/sankashta-chaturthi?on=1981-12-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/ekadashi?on=1981-12-21", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37427, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1981-12-20T16:30:01-05:00", "utc": "1981-12-20T21:30:01Z", "ms": 377731800511.7494 }, "end": { "local": "1981-12-21T18:49:08-05:00", "utc": "1981-12-21T23:49:08Z", "ms": 377826548194.08484 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-20T16:30:01-05:00", "utc": "1981-12-20T21:30:01Z", "ms": 377731800511.7494 }, "end": { "local": "1981-12-21T18:49:08-05:00", "utc": "1981-12-21T23:49:08Z", "ms": 377826548194.08484 } }, "kaala": "sunrise", "days": [ { "local_date": "1981-12-20", "window": { "start": { "local": "1981-12-20T06:06:14-05:00", "utc": "1981-12-20T11:06:14Z", "ms": 377694373550.6531 }, "end": { "local": "1981-12-20T06:06:14-05:00", "utc": "1981-12-20T11:06:14Z", "ms": 377694373550.6531 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1981-12-21", "window": { "start": { "local": "1981-12-21T06:06:44-05:00", "utc": "1981-12-21T11:06:44Z", "ms": 377780803543.62213 }, "end": { "local": "1981-12-21T06:06:44-05:00", "utc": "1981-12-21T11:06:44Z", "ms": 377780803543.62213 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:30 on Sun 20 Dec to 18:49 on Mon 21 Dec.", "fact": "1981-12-20T21:30:01Z → 1981-12-21T23:49:08Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 20th and 06:07 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37427 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Cali, 1981: Monday 21 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": "1981-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-21", "confidence": "determinate" } ], "quote": "In Cali, Saphalā Ekādaśī 1981 falls on Monday 21 December. Ekādaśī runs from 16:30 on Sun 20 Dec to 18:49 on Mon 21 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/cali/festivals/1981/ekadashi?on=1981-12-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/pradosha-vrata?on=1981-12-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6225, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1981-12-22T21:22:51-05:00", "utc": "1981-12-23T02:22:51Z", "ms": 377922170579.766 }, "end": { "local": "1981-12-24T00:02:21-05:00", "utc": "1981-12-24T05:02:21Z", "ms": 378018141305.16614 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-22T21:22:51-05:00", "utc": "1981-12-23T02:22:51Z", "ms": 377922170579.766 }, "end": { "local": "1981-12-24T00:02:21-05:00", "utc": "1981-12-24T05:02:21Z", "ms": 378018141305.16614 } }, "kaala": "pradosha", "days": [ { "local_date": "1981-12-22", "window": { "start": { "local": "1981-12-22T18:02:23-05:00", "utc": "1981-12-22T23:02:23Z", "ms": 377910142866.2377 }, "end": { "local": "1981-12-22T19:39:06-05:00", "utc": "1981-12-23T00:39:06Z", "ms": 377915945594.1205 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1981-12-23", "window": { "start": { "local": "1981-12-23T18:02:53-05:00", "utc": "1981-12-23T23:02:53Z", "ms": 377996573018.99536 }, "end": { "local": "1981-12-23T19:39:36-05:00", "utc": "1981-12-24T00:39:36Z", "ms": 378002375688.45746 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:23 on Tue 22 Dec to 00:02 on Thu 24 Dec.", "fact": "1981-12-23T02:22:51Z → 1981-12-24T05:02:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:02–19:39 on the 22nd, 18:03–19:40 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 97 minutes on the 22nd and 97 of 97 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6225 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Cali, 1981: Wednesday 23 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": "1981-12-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-23", "confidence": "determinate" } ], "quote": "In Cali, Kṛṣṇa Pradoṣa Vrata 1981 falls on Wednesday 23 December. Trayodaśī runs from 21:23 on Tue 22 Dec to 00:02 on Thu 24 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/cali/festivals/1981/pradosha-vrata?on=1981-12-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/shivaratri?on=1981-12-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-24", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1248, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1981-12-24T00:02:21-05:00", "utc": "1981-12-24T05:02:21Z", "ms": 378018141305.16614 }, "end": { "local": "1981-12-25T02:40:09-05:00", "utc": "1981-12-25T07:40:09Z", "ms": 378114009106.9263 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-24T00:02:21-05:00", "utc": "1981-12-24T05:02:21Z", "ms": 378018141305.16614 }, "end": { "local": "1981-12-25T02:40:09-05:00", "utc": "1981-12-25T07:40:09Z", "ms": 378114009106.9263 } }, "kaala": "nishita", "days": [ { "local_date": "1981-12-23", "window": { "start": { "local": "1981-12-23T23:41:33-05:00", "utc": "1981-12-24T04:41:33Z", "ms": 378016893029.4783 }, "end": { "local": "1981-12-24T00:29:33-05:00", "utc": "1981-12-24T05:29:33Z", "ms": 378019773029.4783 } }, "covered_min": 27, "window_min": 48, "qualifies": true }, { "local_date": "1981-12-24", "window": { "start": { "local": "1981-12-24T23:42:03-05:00", "utc": "1981-12-25T04:42:03Z", "ms": 378103322927.23914 }, "end": { "local": "1981-12-25T00:30:03-05:00", "utc": "1981-12-25T05:30:03Z", "ms": 378106202927.23914 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:02 on Thu 24 Dec to 02:40 on Fri 25 Dec.", "fact": "1981-12-24T05:02:21Z → 1981-12-25T07:40:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:42–00:30 on the 23rd, 23:42–00:30 on the 24th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 27 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1248 s" }, { "step": "ruling", "text": "Śivarātri, Cali, 1981: Thursday 24 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-12-24", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-24", "confidence": "boundary" } ], "quote": "In Cali, Śivarātri 1981 falls on Thursday 24 December. Caturdaśī runs from 00:02 on Thu 24 Dec to 02:40 on Fri 25 Dec and covers all of niśītha that night. It also reaches the previous night for 27 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/cali/festivals/1981/shivaratri?on=1981-12-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/cali/festivals/1981/vinayaka-chaturthi?on=1981-12-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3687925", "year": 1981, "local_date": "1981-12-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1327, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1981-12-29T11:01:32-05:00", "utc": "1981-12-29T16:01:32Z", "ms": 378489691859.1289 }, "end": { "local": "1981-12-30T12:10:39-05:00", "utc": "1981-12-30T17:10:39Z", "ms": 378580238986.50134 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1981-12-29T11:01:32-05:00", "utc": "1981-12-29T16:01:32Z", "ms": 378489691859.1289 }, "end": { "local": "1981-12-30T12:10:39-05:00", "utc": "1981-12-30T17:10:39Z", "ms": 378580238986.50134 } }, "kaala": "madhyahna", "days": [ { "local_date": "1981-12-29", "window": { "start": { "local": "1981-12-29T11:44:16-05:00", "utc": "1981-12-29T16:44:16Z", "ms": 378492256484.1028 }, "end": { "local": "1981-12-29T12:32:16-05:00", "utc": "1981-12-29T17:32:16Z", "ms": 378495136484.1028 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1981-12-30", "window": { "start": { "local": "1981-12-30T11:44:46-05:00", "utc": "1981-12-30T16:44:46Z", "ms": 378578685573.05493 }, "end": { "local": "1981-12-30T12:32:46-05:00", "utc": "1981-12-30T17:32:46Z", "ms": 378581565573.05493 } }, "covered_min": 26, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:02 on Tue 29 Dec to 12:11 on Wed 30 Dec.", "fact": "1981-12-29T16:01:32Z → 1981-12-30T17:10:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 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": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 26 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1327 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Cali, 1981: Tuesday 29 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1981-12-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1981-12-29", "confidence": "boundary" } ], "quote": "In Cali, Vināyaka Caturthī 1981 falls on Tuesday 29 December. Caturthī runs from 11:02 on Tue 29 Dec to 12:11 on Wed 30 Dec and covers all of madhyāhna that midday. It also reaches the next midday for 26 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/cali/festivals/1981/vinayaka-chaturthi?on=1981-12-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }