{ "id": "/chicago/festivals/2000", "place": { "id": "4887398", "slug": "chicago", "name": "Chicago", "region": "Illinois, United States", "country": "US", "lat": 41.85003, "lon": -87.65005, "elevation_m": 179, "tz": "America/Chicago" }, "year": 2000, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/chicago/festivals/2000/ekadashi?on=2000-01-01", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19730, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1999-12-31T23:33:58-06:00", "utc": "2000-01-01T05:33:58Z", "ms": 946704838135.4757 }, "end": { "local": "2000-01-02T01:49:46-06:00", "utc": "2000-01-02T07:49:46Z", "ms": 946799386376.2157 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1999-12-31T23:33:58-06:00", "utc": "2000-01-01T05:33:58Z", "ms": 946704838135.4757 }, "end": { "local": "2000-01-02T01:49:46-06:00", "utc": "2000-01-02T07:49:46Z", "ms": 946799386376.2157 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-01-01", "window": { "start": { "local": "2000-01-01T07:18:31-06:00", "utc": "2000-01-01T13:18:31Z", "ms": 946732710619.8833 }, "end": { "local": "2000-01-01T07:18:31-06:00", "utc": "2000-01-01T13:18:31Z", "ms": 946732710619.8833 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-01-02", "window": { "start": { "local": "2000-01-02T07:18:36-06:00", "utc": "2000-01-02T13:18:36Z", "ms": 946819116417.7052 }, "end": { "local": "2000-01-02T07:18:36-06:00", "utc": "2000-01-02T13:18:36Z", "ms": 946819116417.7052 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:34 on Fri 31 Dec to 01:50 on Sun 2 Jan.", "fact": "2000-01-01T05:33:58Z → 2000-01-02T07:49:46Z" }, { "step": "kaala", "text": "Sunrise is at 07:19 on the 1st and 07:19 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 19730 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Chicago, 2000: Saturday 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": "2000-01-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-01", "confidence": "determinate" } ], "quote": "In Chicago, Saphalā Ekādaśī 2000 falls on Saturday 1 January. Ekādaśī runs from 23:34 on Fri 31 Dec to 01:50 on Sun 2 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-01-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-01-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34269, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-01-03T04:21:42-06:00", "utc": "2000-01-03T10:21:42Z", "ms": 946894902206.5374 }, "end": { "local": "2000-01-04T07:01:08-06:00", "utc": "2000-01-04T13:01:08Z", "ms": 946990867892.9945 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-01-03T04:21:42-06:00", "utc": "2000-01-03T10:21:42Z", "ms": 946894902206.5374 }, "end": { "local": "2000-01-04T07:01:08-06:00", "utc": "2000-01-04T13:01:08Z", "ms": 946990867892.9945 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-01-03", "window": { "start": { "local": "2000-01-03T16:31:22-06:00", "utc": "2000-01-03T22:31:22Z", "ms": 946938682051.812 }, "end": { "local": "2000-01-03T18:29:41-06:00", "utc": "2000-01-04T00:29:41Z", "ms": 946945780579.1837 } }, "covered_min": 118, "window_min": 118, "qualifies": true }, { "local_date": "2000-01-04", "window": { "start": { "local": "2000-01-04T16:32:17-06:00", "utc": "2000-01-04T22:32:17Z", "ms": 947025136871.5844 }, "end": { "local": "2000-01-04T18:30:28-06:00", "utc": "2000-01-05T00:30:28Z", "ms": 947032227926.412 } }, "covered_min": 0, "window_min": 118, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:22 on Mon 3 Jan to 07:01 on Tue 4 Jan.", "fact": "2000-01-03T10:21:42Z → 2000-01-04T13:01:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:31–18:30 on the 3rd, 16:32–18:30 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 118 of 118 minutes on the 3rd and 0 of 118 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 34269 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Monday 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": "2000-01-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-03", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Monday 3 January. Trayodaśī runs from 04:22 on Mon 3 Jan to 07:01 on Tue 4 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-01-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-01-04", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24126, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-01-04T07:01:08-06:00", "utc": "2000-01-04T13:01:08Z", "ms": 946990867892.9945 }, "end": { "local": "2000-01-05T09:40:33-06:00", "utc": "2000-01-05T15:40:33Z", "ms": 947086833139.0986 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-01-04T07:01:08-06:00", "utc": "2000-01-04T13:01:08Z", "ms": 946990867892.9945 }, "end": { "local": "2000-01-05T09:40:33-06:00", "utc": "2000-01-05T15:40:33Z", "ms": 947086833139.0986 } }, "kaala": "nishita", "days": [ { "local_date": "2000-01-03", "window": { "start": { "local": "2000-01-03T23:31:02-06:00", "utc": "2000-01-04T05:31:02Z", "ms": 946963861529.456 }, "end": { "local": "2000-01-04T00:19:02-06:00", "utc": "2000-01-04T06:19:02Z", "ms": 946966741529.456 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-01-04", "window": { "start": { "local": "2000-01-04T23:31:28-06:00", "utc": "2000-01-05T05:31:28Z", "ms": 947050288327.1877 }, "end": { "local": "2000-01-05T00:19:28-06:00", "utc": "2000-01-05T06:19:28Z", "ms": 947053168327.1877 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:01 on Tue 4 Jan to 09:41 on Wed 5 Jan.", "fact": "2000-01-04T13:01:08Z → 2000-01-05T15:40:33Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:31–00:19 on the 3rd, 23:31–00:19 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 24126 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Tuesday 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": "2000-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-04", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Tuesday 4 January. Caturdaśī runs from 07:01 on Tue 4 Jan to 09:41 on Wed 5 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-01-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21623, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-01-09T18:22:05-06:00", "utc": "2000-01-10T00:22:05Z", "ms": 947463725179.3119 }, "end": { "local": "2000-01-10T19:38:06-06:00", "utc": "2000-01-11T01:38:06Z", "ms": 947554685813.496 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-01-09T18:22:05-06:00", "utc": "2000-01-10T00:22:05Z", "ms": 947463725179.3119 }, "end": { "local": "2000-01-10T19:38:06-06:00", "utc": "2000-01-11T01:38:06Z", "ms": 947554685813.496 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-01-09", "window": { "start": { "local": "2000-01-09T11:33:42-06:00", "utc": "2000-01-09T17:33:42Z", "ms": 947439222165.1636 }, "end": { "local": "2000-01-09T12:21:42-06:00", "utc": "2000-01-09T18:21:42Z", "ms": 947442102165.1636 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-01-10", "window": { "start": { "local": "2000-01-10T11:34:07-06:00", "utc": "2000-01-10T17:34:07Z", "ms": 947525647267.2781 }, "end": { "local": "2000-01-10T12:22:07-06:00", "utc": "2000-01-10T18:22:07Z", "ms": 947528527267.2781 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:22 on Sun 9 Jan to 19:38 on Mon 10 Jan.", "fact": "2000-01-10T00:22:05Z → 2000-01-11T01:38:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 9th, 11:34–12:22 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21623 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Monday 10 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": "2000-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-10", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Monday 10 January. Caturthī runs from 18:22 on Sun 9 Jan to 19:38 on Mon 10 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-01-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18806, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-02-13T00:28:56-06:00", "utc": "2000-02-13T06:28:56Z", "ms": 950423336370.0354 } }, "span": { "of": "transit", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 } }, "kaala": "sunset-day", "days": [ { "local_date": "2000-01-14", "window": { "start": { "local": "2000-01-13T16:41:33-06:00", "utc": "2000-01-13T22:41:33Z", "ms": 947803292628.6892 }, "end": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2000-01-15", "window": { "start": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 }, "end": { "local": "2000-01-15T16:43:49-06:00", "utc": "2000-01-15T22:43:49Z", "ms": 947976228685.8303 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2000-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:29 on Fri 14 Jan.", "fact": "2000-01-14T17:29:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 18806 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Friday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Chicago, 2000: Thursday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2000-01-13", "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": "2000-01-13", "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 Chicago, Bhogi 2000 falls on Thursday 13 January. It is kept the day before Pongal, which falls on Friday 14 January. The Sun enters Makara at 11:29 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18806, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-02-13T00:28:56-06:00", "utc": "2000-02-13T06:28:56Z", "ms": 950423336370.0354 } }, "span": { "of": "transit", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 } }, "kaala": "sunset-day", "days": [ { "local_date": "2000-01-14", "window": { "start": { "local": "2000-01-13T16:41:33-06:00", "utc": "2000-01-13T22:41:33Z", "ms": 947803292628.6892 }, "end": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2000-01-15", "window": { "start": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 }, "end": { "local": "2000-01-15T16:43:49-06:00", "utc": "2000-01-15T22:43:49Z", "ms": 947976228685.8303 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:29 on Fri 14 Jan.", "fact": "2000-01-14T17:29:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 18806 s" }, { "step": "ruling", "text": "Pongal, Chicago, 2000: Friday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2000-01-14", "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": "2000-01-14", "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 Chicago, Pongal 2000 falls on Friday 14 January. The Sun enters Makara at 11:29 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41354, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-02-13T00:28:56-06:00", "utc": "2000-02-13T06:28:56Z", "ms": 950423336370.0354 } }, "span": { "of": "transit", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 } }, "kaala": "civil-day", "days": [ { "local_date": "2000-01-13", "window": { "start": { "local": "2000-01-13T00:00:00-06:00", "utc": "2000-01-13T06:00:00Z", "ms": 947743200000 }, "end": { "local": "2000-01-14T00:00:00-06:00", "utc": "2000-01-14T06:00:00Z", "ms": 947829600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2000-01-14", "window": { "start": { "local": "2000-01-14T00:00:00-06:00", "utc": "2000-01-14T06:00:00Z", "ms": 947829600000 }, "end": { "local": "2000-01-15T00:00:00-06:00", "utc": "2000-01-15T06:00:00Z", "ms": 947916000000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:29 on Fri 14 Jan.", "fact": "2000-01-14T17:29:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Chicago.", "fact": "civil-day: midnight-to-midnight · America/Chicago" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 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 midnight → only-day · margin 41354 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Chicago, 2000: Friday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2000-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2000-01-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Chicago, Makara Saṅkrānti 2000 falls on Friday 14 January. The Sun enters Makara at 11:29 on Fri 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18806, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-02-13T00:28:56-06:00", "utc": "2000-02-13T06:28:56Z", "ms": 950423336370.0354 } }, "span": { "of": "transit", "start": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 }, "end": { "local": "2000-01-14T11:29:14-06:00", "utc": "2000-01-14T17:29:14Z", "ms": 947870954008.4812 } }, "kaala": "sunset-day", "days": [ { "local_date": "2000-01-14", "window": { "start": { "local": "2000-01-13T16:41:33-06:00", "utc": "2000-01-13T22:41:33Z", "ms": 947803292628.6892 }, "end": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2000-01-15", "window": { "start": { "local": "2000-01-14T16:42:40-06:00", "utc": "2000-01-14T22:42:40Z", "ms": 947889760186.822 }, "end": { "local": "2000-01-15T16:43:49-06:00", "utc": "2000-01-15T22:43:49Z", "ms": 947976228685.8303 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2000-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:29 on Fri 14 Jan.", "fact": "2000-01-14T17:29:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 18806 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Friday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Chicago, 2000: Saturday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2000-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2000-01-15", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Chicago, Mattu Pongal 2000 falls on Saturday 15 January. It is kept the day after Pongal, which falls on Friday 14 January. The Sun enters Makara at 11:29 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-01-17", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17276, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-01-16T14:51:11-06:00", "utc": "2000-01-16T20:51:11Z", "ms": 948055870637.8601 }, "end": { "local": "2000-01-17T12:03:18-06:00", "utc": "2000-01-17T18:03:18Z", "ms": 948132198210.4174 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-01-16T14:51:11-06:00", "utc": "2000-01-16T20:51:11Z", "ms": 948055870637.8601 }, "end": { "local": "2000-01-17T12:03:18-06:00", "utc": "2000-01-17T18:03:18Z", "ms": 948132198210.4174 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-01-16", "window": { "start": { "local": "2000-01-16T07:15:52-06:00", "utc": "2000-01-16T13:15:52Z", "ms": 948028551542.0205 }, "end": { "local": "2000-01-16T07:15:52-06:00", "utc": "2000-01-16T13:15:52Z", "ms": 948028551542.0205 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-01-17", "window": { "start": { "local": "2000-01-17T07:15:22-06:00", "utc": "2000-01-17T13:15:22Z", "ms": 948114922414.6339 }, "end": { "local": "2000-01-17T07:15:22-06:00", "utc": "2000-01-17T13:15:22Z", "ms": 948114922414.6339 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:51 on Sun 16 Jan to 12:03 on Mon 17 Jan.", "fact": "2000-01-16T20:51:11Z → 2000-01-17T18:03:18Z" }, { "step": "kaala", "text": "Sunrise is at 07:16 on the 16th and 07:15 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17276 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2000: Monday 17 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-17", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2000 falls on Monday 17 January. Ekādaśī runs from 14:51 on Sun 16 Jan to 12:03 on Mon 17 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-01-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-01-18", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28414, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-01-18T08:53:45-06:00", "utc": "2000-01-18T14:53:45Z", "ms": 948207224932.2104 }, "end": { "local": "2000-01-19T05:30:41-06:00", "utc": "2000-01-19T11:30:41Z", "ms": 948281440999.8925 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-01-18T08:53:45-06:00", "utc": "2000-01-18T14:53:45Z", "ms": 948207224932.2104 }, "end": { "local": "2000-01-19T05:30:41-06:00", "utc": "2000-01-19T11:30:41Z", "ms": 948281440999.8925 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-01-18", "window": { "start": { "local": "2000-01-18T16:47:19-06:00", "utc": "2000-01-18T22:47:19Z", "ms": 948235639265.144 }, "end": { "local": "2000-01-18T18:42:55-06:00", "utc": "2000-01-19T00:42:55Z", "ms": 948242575031.6125 } }, "covered_min": 116, "window_min": 116, "qualifies": true }, { "local_date": "2000-01-19", "window": { "start": { "local": "2000-01-19T16:48:31-06:00", "utc": "2000-01-19T22:48:31Z", "ms": 948322110974.0867 }, "end": { "local": "2000-01-19T18:43:52-06:00", "utc": "2000-01-20T00:43:52Z", "ms": 948329032417.3942 } }, "covered_min": 0, "window_min": 115, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:54 on Tue 18 Jan to 05:31 on Wed 19 Jan.", "fact": "2000-01-18T14:53:45Z → 2000-01-19T11:30:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:47–18:43 on the 18th, 16:49–18:44 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 116 of 116 minutes on the 18th and 0 of 115 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28414 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Tuesday 18 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-01-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-18", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Tuesday 18 January. Trayodaśī runs from 08:54 on Tue 18 Jan to 05:31 on Wed 19 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-01-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-01-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19748, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-01-23T14:36:49-06:00", "utc": "2000-01-23T20:36:49Z", "ms": 948659808673.0631 }, "end": { "local": "2000-01-24T13:05:41-06:00", "utc": "2000-01-24T19:05:41Z", "ms": 948740741094.7937 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-01-23T14:36:49-06:00", "utc": "2000-01-23T20:36:49Z", "ms": 948659808673.0631 }, "end": { "local": "2000-01-24T13:05:41-06:00", "utc": "2000-01-24T19:05:41Z", "ms": 948740741094.7937 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-01-23", "window": { "start": { "local": "2000-01-23T20:05:57-06:00", "utc": "2000-01-24T02:05:57Z", "ms": 948679557095.3451 }, "end": { "local": "2000-01-23T20:05:57-06:00", "utc": "2000-01-24T02:05:57Z", "ms": 948679557095.3451 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-01-24", "window": { "start": { "local": "2000-01-24T21:13:53-06:00", "utc": "2000-01-25T03:13:53Z", "ms": 948770032934.4606 }, "end": { "local": "2000-01-24T21:13:53-06:00", "utc": "2000-01-25T03:13:53Z", "ms": 948770032934.4606 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:37 on Sun 23 Jan to 13:06 on Mon 24 Jan.", "fact": "2000-01-23T20:36:49Z → 2000-01-24T19:05:41Z" }, { "step": "kaala", "text": "Moonrise is at 20:06 on the 23rd and 21:14 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 19748 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Sunday 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": "2000-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-23", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Sunday 23 January. Caturthī runs from 14:37 on Sun 23 Jan to 13:06 on Mon 24 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-01-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-01-31", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32118, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-01-30T19:27:34-06:00", "utc": "2000-01-31T01:27:34Z", "ms": 949282054038.2714 }, "end": { "local": "2000-01-31T22:08:38-06:00", "utc": "2000-02-01T04:08:38Z", "ms": 949378117796.7206 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-01-30T19:27:34-06:00", "utc": "2000-01-31T01:27:34Z", "ms": 949282054038.2714 }, "end": { "local": "2000-01-31T22:08:38-06:00", "utc": "2000-02-01T04:08:38Z", "ms": 949378117796.7206 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-01-31", "window": { "start": { "local": "2000-01-31T07:04:55-06:00", "utc": "2000-01-31T13:04:55Z", "ms": 949323895287.0897 }, "end": { "local": "2000-01-31T07:04:55-06:00", "utc": "2000-01-31T13:04:55Z", "ms": 949323895287.0897 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-02-01", "window": { "start": { "local": "2000-02-01T07:03:56-06:00", "utc": "2000-02-01T13:03:56Z", "ms": 949410236136.304 }, "end": { "local": "2000-02-01T07:03:56-06:00", "utc": "2000-02-01T13:03:56Z", "ms": 949410236136.304 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:28 on Sun 30 Jan to 22:09 on Mon 31 Jan.", "fact": "2000-01-31T01:27:34Z → 2000-02-01T04:08:38Z" }, { "step": "kaala", "text": "Sunrise is at 07:05 on the 31st and 07:04 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 32118 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Chicago, 2000: Monday 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": "2000-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-01-31", "confidence": "determinate" } ], "quote": "In Chicago, Ṣaṭtilā Ekādaśī 2000 falls on Monday 31 January. Ekādaśī runs from 19:28 on Sun 30 Jan to 22:09 on Mon 31 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-01-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-02-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21066, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-02-02T00:47:39-06:00", "utc": "2000-02-02T06:47:39Z", "ms": 949474059247.3599 }, "end": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-02T00:47:39-06:00", "utc": "2000-02-02T06:47:39Z", "ms": 949474059247.3599 }, "end": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-02-01", "window": { "start": { "local": "2000-02-01T17:04:48-06:00", "utc": "2000-02-01T23:04:48Z", "ms": 949446288257.9221 }, "end": { "local": "2000-02-01T18:56:33-06:00", "utc": "2000-02-02T00:56:33Z", "ms": 949452993190.2515 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "2000-02-02", "window": { "start": { "local": "2000-02-02T17:06:05-06:00", "utc": "2000-02-02T23:06:05Z", "ms": 949532765385.7228 }, "end": { "local": "2000-02-02T18:57:32-06:00", "utc": "2000-02-03T00:57:32Z", "ms": 949539451689.3993 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:48 on Wed 2 Feb to 03:14 on Thu 3 Feb.", "fact": "2000-02-02T06:47:39Z → 2000-02-03T09:14:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:05–18:57 on the 1st, 17:06–18:58 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 112 minutes on the 1st and 111 of 111 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 21066 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Wednesday 2 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-02", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Wednesday 2 February. Trayodaśī runs from 00:48 on Wed 2 Feb to 03:14 on Thu 3 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-02-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-03", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 691, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 }, "end": { "local": "2000-02-04T05:21:12-06:00", "utc": "2000-02-04T11:21:12Z", "ms": 949663272452.9962 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 }, "end": { "local": "2000-02-04T05:21:12-06:00", "utc": "2000-02-04T11:21:12Z", "ms": 949663272452.9962 } }, "kaala": "arunodaya", "days": [ { "local_date": "2000-02-03", "window": { "start": { "local": "2000-02-03T05:10:26-06:00", "utc": "2000-02-03T11:10:26Z", "ms": 949576226359.6199 }, "end": { "local": "2000-02-03T07:01:53-06:00", "utc": "2000-02-03T13:01:53Z", "ms": 949582912663.2964 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "2000-02-04", "window": { "start": { "local": "2000-02-04T05:09:41-06:00", "utc": "2000-02-04T11:09:41Z", "ms": 949662580966.276 }, "end": { "local": "2000-02-04T07:00:48-06:00", "utc": "2000-02-04T13:00:48Z", "ms": 949669248408.9039 } }, "covered_min": 12, "window_min": 111, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:14 on Thu 3 Feb to 05:21 on Fri 4 Feb.", "fact": "2000-02-03T09:14:23Z → 2000-02-04T11:21:12Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:10–07:02 on the 3rd, 05:10–07:01 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 111 of 111 minutes on the 3rd and 12 of 111 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 691 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Chicago, 2000: Thursday 3 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-02-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-03", "confidence": "boundary" } ], "quote": "In Chicago, Yama Tarpaṇa 2000 falls on Thursday 3 February. Caturdaśī runs from 03:14 on Thu 3 Feb to 05:21 on Fri 4 Feb and covers all of aruṇodaya that dawn. It also reaches the next dawn for 12 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/chicago/festivals/2000/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": "/chicago/festivals/2000/shivaratri?on=2000-02-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9984, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 }, "end": { "local": "2000-02-04T05:21:12-06:00", "utc": "2000-02-04T11:21:12Z", "ms": 949663272452.9962 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-03T03:14:23-06:00", "utc": "2000-02-03T09:14:23Z", "ms": 949569262821.84 }, "end": { "local": "2000-02-04T05:21:12-06:00", "utc": "2000-02-04T11:21:12Z", "ms": 949663272452.9962 } }, "kaala": "nishita", "days": [ { "local_date": "2000-02-02", "window": { "start": { "local": "2000-02-02T23:39:59-06:00", "utc": "2000-02-03T05:39:59Z", "ms": 949556399024.5095 }, "end": { "local": "2000-02-03T00:27:59-06:00", "utc": "2000-02-03T06:27:59Z", "ms": 949559279024.5095 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-02-03", "window": { "start": { "local": "2000-02-03T23:40:05-06:00", "utc": "2000-02-04T05:40:05Z", "ms": 949642805499.0491 }, "end": { "local": "2000-02-04T00:28:05-06:00", "utc": "2000-02-04T06:28:05Z", "ms": 949645685499.0491 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:14 on Thu 3 Feb to 05:21 on Fri 4 Feb.", "fact": "2000-02-03T09:14:23Z → 2000-02-04T11:21:12Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 2nd, 23:40–00:28 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 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9984 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Thursday 3 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": "2000-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-03", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Thursday 3 February. Caturdaśī runs from 03:14 on Thu 3 Feb to 05:21 on Fri 4 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8284, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-02-08T09:22:58-06:00", "utc": "2000-02-08T15:22:58Z", "ms": 950023377773.6079 }, "end": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-08T09:22:58-06:00", "utc": "2000-02-08T15:22:58Z", "ms": 950023377773.6079 }, "end": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-02-08", "window": { "start": { "local": "2000-02-08T11:41:02-06:00", "utc": "2000-02-08T17:41:02Z", "ms": 950031661955.3693 }, "end": { "local": "2000-02-08T12:29:02-06:00", "utc": "2000-02-08T18:29:02Z", "ms": 950034541955.3693 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-02-09", "window": { "start": { "local": "2000-02-09T11:41:04-06:00", "utc": "2000-02-09T17:41:04Z", "ms": 950118064385.7827 }, "end": { "local": "2000-02-09T12:29:04-06:00", "utc": "2000-02-09T18:29:04Z", "ms": 950120944385.7827 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:23 on Tue 8 Feb to 09:14 on Wed 9 Feb.", "fact": "2000-02-08T15:22:58Z → 2000-02-09T15:14:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 8th, 11:41–12:29 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 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 8284 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Chicago, 2000: Tuesday 8 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": "2000-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-08", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2000 falls on Tuesday 8 February. Caturthī runs from 09:23 on Tue 8 Feb to 09:14 on Wed 9 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28251, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-02-08T09:22:58-06:00", "utc": "2000-02-08T15:22:58Z", "ms": 950023377773.6079 }, "end": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-08T09:22:58-06:00", "utc": "2000-02-08T15:22:58Z", "ms": 950023377773.6079 }, "end": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-02-08", "window": { "start": { "local": "2000-02-08T17:13:49-06:00", "utc": "2000-02-08T23:13:49Z", "ms": 950051628516.4504 }, "end": { "local": "2000-02-08T19:03:18-06:00", "utc": "2000-02-09T01:03:18Z", "ms": 950058198489.0199 } }, "covered_min": 109, "window_min": 109, "qualifies": true }, { "local_date": "2000-02-09", "window": { "start": { "local": "2000-02-09T17:15:05-06:00", "utc": "2000-02-09T23:15:05Z", "ms": 950138105460.8441 }, "end": { "local": "2000-02-09T19:04:15-06:00", "utc": "2000-02-10T01:04:15Z", "ms": 950144655367.9049 } }, "covered_min": 0, "window_min": 109, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:23 on Tue 8 Feb to 09:14 on Wed 9 Feb.", "fact": "2000-02-08T15:22:58Z → 2000-02-09T15:14:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–19:03 on the 8th, 17:15–19:04 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 109 of 109 minutes on the 8th and 0 of 109 on the 9th.", "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 28251 s" }, { "step": "ruling", "text": "Tila Caturthī, Chicago, 2000: Tuesday 8 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": "2000-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-08", "confidence": "determinate" } ], "quote": "In Chicago, Tila Caturthī 2000 falls on Tuesday 8 February. Caturthī runs from 09:23 on Tue 8 Feb to 09:14 on Wed 9 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8823, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "end": { "local": "2000-02-10T08:38:36-06:00", "utc": "2000-02-10T14:38:36Z", "ms": 950193516368.9806 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "end": { "local": "2000-02-10T08:38:36-06:00", "utc": "2000-02-10T14:38:36Z", "ms": 950193516368.9806 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-02-09", "window": { "start": { "local": "2000-02-09T11:41:04-06:00", "utc": "2000-02-09T17:41:04Z", "ms": 950118064385.7827 }, "end": { "local": "2000-02-09T12:29:04-06:00", "utc": "2000-02-09T18:29:04Z", "ms": 950120944385.7827 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-02-10", "window": { "start": { "local": "2000-02-10T11:41:06-06:00", "utc": "2000-02-10T17:41:06Z", "ms": 950204466011.4045 }, "end": { "local": "2000-02-10T12:29:06-06:00", "utc": "2000-02-10T18:29:06Z", "ms": 950207346011.4045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 09:14 on Wed 9 Feb to 08:39 on Thu 10 Feb.", "fact": "2000-02-09T15:14:02Z → 2000-02-10T14:38:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 9th, 11:41–12:29 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8823 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Chicago, 2000: Wednesday 9 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": "2000-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-09", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Pañcamī 2000 falls on Wednesday 9 February. Pañcamī runs from 09:14 on Wed 9 Feb to 08:39 on Thu 10 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8823, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "end": { "local": "2000-02-10T08:38:36-06:00", "utc": "2000-02-10T14:38:36Z", "ms": 950193516368.9806 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-09T09:14:02-06:00", "utc": "2000-02-09T15:14:02Z", "ms": 950109241827.378 }, "end": { "local": "2000-02-10T08:38:36-06:00", "utc": "2000-02-10T14:38:36Z", "ms": 950193516368.9806 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-02-09", "window": { "start": { "local": "2000-02-09T11:41:04-06:00", "utc": "2000-02-09T17:41:04Z", "ms": 950118064385.7827 }, "end": { "local": "2000-02-09T12:29:04-06:00", "utc": "2000-02-09T18:29:04Z", "ms": 950120944385.7827 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-02-10", "window": { "start": { "local": "2000-02-10T11:41:06-06:00", "utc": "2000-02-10T17:41:06Z", "ms": 950204466011.4045 }, "end": { "local": "2000-02-10T12:29:06-06:00", "utc": "2000-02-10T18:29:06Z", "ms": 950207346011.4045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 09:14 on Wed 9 Feb to 08:39 on Thu 10 Feb.", "fact": "2000-02-09T15:14:02Z → 2000-02-10T14:38:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 9th, 11:41–12:29 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8823 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Chicago, 2000: Wednesday 9 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": "2000-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-09", "confidence": "determinate" } ], "quote": "In Chicago, Vasanta Pañcamī 2000 falls on Wednesday 9 February. Pañcamī runs from 09:14 on Wed 9 Feb to 08:39 on Thu 10 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2324, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-02-11T07:37:43-06:00", "utc": "2000-02-11T13:37:43Z", "ms": 950276262700.6803 }, "end": { "local": "2000-02-12T06:12:35-06:00", "utc": "2000-02-12T12:12:35Z", "ms": 950357554558.844 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-11T07:37:43-06:00", "utc": "2000-02-11T13:37:43Z", "ms": 950276262700.6803 }, "end": { "local": "2000-02-12T06:12:35-06:00", "utc": "2000-02-12T12:12:35Z", "ms": 950357554558.844 } }, "kaala": "arunodaya", "days": [ { "local_date": "2000-02-11", "window": { "start": { "local": "2000-02-11T05:03:45-06:00", "utc": "2000-02-11T11:03:45Z", "ms": 950267025118.1078 }, "end": { "local": "2000-02-11T06:52:35-06:00", "utc": "2000-02-11T12:52:35Z", "ms": 950273554788.7384 } }, "covered_min": 0, "window_min": 109, "qualifies": false }, { "local_date": "2000-02-12", "window": { "start": { "local": "2000-02-12T05:02:49-06:00", "utc": "2000-02-12T11:02:49Z", "ms": 950353369150.2385 }, "end": { "local": "2000-02-12T06:51:18-06:00", "utc": "2000-02-12T12:51:18Z", "ms": 950359878421.536 } }, "covered_min": 70, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:38 on Fri 11 Feb to 06:13 on Sat 12 Feb.", "fact": "2000-02-11T13:37:43Z → 2000-02-12T12:12:35Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:04–06:53 on the 11th, 05:03–06:51 on the 12th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 0 of 109 minutes on the 11th and 70 of 108 on the 12th.", "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 2324 s" }, { "step": "ruling", "text": "Ratha Saptamī, Chicago, 2000: Saturday 12 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": "2000-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-12", "confidence": "determinate" } ], "quote": "In Chicago, Ratha Saptamī 2000 falls on Saturday 12 February. Saptamī runs from 07:38 on Fri 11 Feb to 06:13 on Sat 12 Feb and covers 70 of 108 minutes of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-02-15", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24954, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-02-14T23:51:27-06:00", "utc": "2000-02-15T05:51:27Z", "ms": 950593886887.5958 }, "end": { "local": "2000-02-15T21:13:04-06:00", "utc": "2000-02-16T03:13:04Z", "ms": 950670783527.885 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-14T23:51:27-06:00", "utc": "2000-02-15T05:51:27Z", "ms": 950593886887.5958 }, "end": { "local": "2000-02-15T21:13:04-06:00", "utc": "2000-02-16T03:13:04Z", "ms": 950670783527.885 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-02-15", "window": { "start": { "local": "2000-02-15T06:47:21-06:00", "utc": "2000-02-15T12:47:21Z", "ms": 950618841341.2847 }, "end": { "local": "2000-02-15T06:47:21-06:00", "utc": "2000-02-15T12:47:21Z", "ms": 950618841341.2847 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-02-16", "window": { "start": { "local": "2000-02-16T06:46:00-06:00", "utc": "2000-02-16T12:46:00Z", "ms": 950705159784.4501 }, "end": { "local": "2000-02-16T06:46:00-06:00", "utc": "2000-02-16T12:46:00Z", "ms": 950705159784.4501 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:51 on Mon 14 Feb to 21:13 on Tue 15 Feb.", "fact": "2000-02-15T05:51:27Z → 2000-02-16T03:13:04Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 15th and 06:46 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24954 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Chicago, 2000: Tuesday 15 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-15", "confidence": "determinate" } ], "quote": "In Chicago, Jayā Ekādaśī 2000 falls on Tuesday 15 February. Ekādaśī runs from 23:51 on Mon 14 Feb to 21:13 on Tue 15 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-02-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21466, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-02-15T21:13:04-06:00", "utc": "2000-02-16T03:13:04Z", "ms": 950670783527.885 }, "end": { "local": "2000-02-16T18:26:45-06:00", "utc": "2000-02-17T00:26:45Z", "ms": 950747205384.3867 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-15T21:13:04-06:00", "utc": "2000-02-16T03:13:04Z", "ms": 950670783527.885 }, "end": { "local": "2000-02-16T18:26:45-06:00", "utc": "2000-02-17T00:26:45Z", "ms": 950747205384.3867 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-02-15", "window": { "start": { "local": "2000-02-15T11:41:02-06:00", "utc": "2000-02-15T17:41:02Z", "ms": 950636462317.5345 }, "end": { "local": "2000-02-15T12:29:02-06:00", "utc": "2000-02-15T18:29:02Z", "ms": 950639342317.5345 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-02-16", "window": { "start": { "local": "2000-02-16T11:40:59-06:00", "utc": "2000-02-16T17:40:59Z", "ms": 950722859288.2083 }, "end": { "local": "2000-02-16T12:28:59-06:00", "utc": "2000-02-16T18:28:59Z", "ms": 950725739288.2083 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:13 on Tue 15 Feb to 18:27 on Wed 16 Feb.", "fact": "2000-02-16T03:13:04Z → 2000-02-17T00:26:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 15th, 11:41–12:29 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21466 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Chicago, 2000: Wednesday 16 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": "2000-02-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-16", "confidence": "determinate" } ], "quote": "In Chicago, Bhīṣma Dvādaśī 2000 falls on Wednesday 16 February. Dvādaśī runs from 21:13 on Tue 15 Feb to 18:27 on Wed 16 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-02-16", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2639, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-02-16T18:26:45-06:00", "utc": "2000-02-17T00:26:45Z", "ms": 950747205384.3867 }, "end": { "local": "2000-02-17T15:38:44-06:00", "utc": "2000-02-17T21:38:44Z", "ms": 950823524426.5259 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-16T18:26:45-06:00", "utc": "2000-02-17T00:26:45Z", "ms": 950747205384.3867 }, "end": { "local": "2000-02-17T15:38:44-06:00", "utc": "2000-02-17T21:38:44Z", "ms": 950823524426.5259 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-02-16", "window": { "start": { "local": "2000-02-16T17:23:59-06:00", "utc": "2000-02-16T23:23:59Z", "ms": 950743438791.9664 }, "end": { "local": "2000-02-16T19:10:44-06:00", "utc": "2000-02-17T01:10:44Z", "ms": 950749843890.2487 } }, "covered_min": 44, "window_min": 107, "qualifies": true }, { "local_date": "2000-02-17", "window": { "start": { "local": "2000-02-17T17:25:14-06:00", "utc": "2000-02-17T23:25:14Z", "ms": 950829914027.5765 }, "end": { "local": "2000-02-17T19:11:38-06:00", "utc": "2000-02-18T01:11:38Z", "ms": 950836297905.9653 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:27 on Wed 16 Feb to 15:39 on Thu 17 Feb.", "fact": "2000-02-17T00:26:45Z → 2000-02-17T21:38:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:24–19:11 on the 16th, 17:25–19:12 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 44 of 107 minutes on the 16th and 0 of 106 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 2639 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Wednesday 16 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-02-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-16", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Wednesday 16 February. Trayodaśī runs from 18:27 on Wed 16 Feb to 15:39 on Thu 17 Feb and covers 44 of 107 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-02-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1636, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-02-18T12:56:07-06:00", "utc": "2000-02-18T18:56:07Z", "ms": 950900166743.4181 }, "end": { "local": "2000-02-19T10:26:40-06:00", "utc": "2000-02-19T16:26:40Z", "ms": 950977600019.9584 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2000-02-18T12:56:07-06:00", "utc": "2000-02-18T18:56:07Z", "ms": 950900166743.4181 }, "end": { "local": "2000-02-19T10:26:40-06:00", "utc": "2000-02-19T16:26:40Z", "ms": 950977600019.9584 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-02-18", "window": { "start": { "local": "2000-02-18T11:40:51-06:00", "utc": "2000-02-18T17:40:51Z", "ms": 950895651055.2461 }, "end": { "local": "2000-02-18T12:28:51-06:00", "utc": "2000-02-18T18:28:51Z", "ms": 950898531055.2461 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-02-19", "window": { "start": { "local": "2000-02-19T11:40:46-06:00", "utc": "2000-02-19T17:40:46Z", "ms": 950982045887.355 }, "end": { "local": "2000-02-19T12:28:46-06:00", "utc": "2000-02-19T18:28:46Z", "ms": 950984925887.355 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:56 on Fri 18 Feb to 10:27 on Sat 19 Feb.", "fact": "2000-02-18T18:56:07Z → 2000-02-19T16:26:40Z" }, { "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 0 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 1636 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Chicago, 2000: Saturday 19 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": "2000-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-18", "confidence": "determinate" } ], "quote": "In Chicago, Māghī Pūrṇimā 2000 falls on Saturday 19 February. Pūrṇimā runs from 12:56 on Fri 18 Feb to 10:27 on Sat 19 Feb, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-02-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-02-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29640, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-02-22T05:38:02-06:00", "utc": "2000-02-22T11:38:02Z", "ms": 951219481867.5057 }, "end": { "local": "2000-02-23T05:18:38-06:00", "utc": "2000-02-23T11:18:38Z", "ms": 951304718156.4497 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-02-22T05:38:02-06:00", "utc": "2000-02-22T11:38:02Z", "ms": 951219481867.5057 }, "end": { "local": "2000-02-23T05:18:38-06:00", "utc": "2000-02-23T11:18:38Z", "ms": 951304718156.4497 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-02-21", "window": { "start": { "local": "2000-02-21T19:59:10-06:00", "utc": "2000-02-22T01:59:10Z", "ms": 951184749808.6825 }, "end": { "local": "2000-02-21T19:59:10-06:00", "utc": "2000-02-22T01:59:10Z", "ms": 951184749808.6825 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-02-22", "window": { "start": { "local": "2000-02-22T21:04:38-06:00", "utc": "2000-02-23T03:04:38Z", "ms": 951275077720.0295 }, "end": { "local": "2000-02-22T21:04:38-06:00", "utc": "2000-02-23T03:04:38Z", "ms": 951275077720.0295 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:38 on Tue 22 Feb to 05:19 on Wed 23 Feb.", "fact": "2000-02-22T11:38:02Z → 2000-02-23T11:18:38Z" }, { "step": "kaala", "text": "Moonrise is at 19:59 on the 21st and 21:05 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 29640 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Tuesday 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": "2000-02-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-02-22", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Tuesday 22 February. Caturthī runs from 05:38 on Tue 22 Feb to 05:19 on Wed 23 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-02-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-03-01", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35649, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-02-29T16:20:54-06:00", "utc": "2000-02-29T22:20:54Z", "ms": 951862853987.119 }, "end": { "local": "2000-03-01T18:45:18-06:00", "utc": "2000-03-02T00:45:18Z", "ms": 951957918024.211 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-02-29T16:20:54-06:00", "utc": "2000-02-29T22:20:54Z", "ms": 951862853987.119 }, "end": { "local": "2000-03-01T18:45:18-06:00", "utc": "2000-03-02T00:45:18Z", "ms": 951957918024.211 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-02-29", "window": { "start": { "local": "2000-02-29T06:26:45-06:00", "utc": "2000-02-29T12:26:45Z", "ms": 951827204638.4186 }, "end": { "local": "2000-02-29T06:26:45-06:00", "utc": "2000-02-29T12:26:45Z", "ms": 951827204638.4186 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-03-01", "window": { "start": { "local": "2000-03-01T06:25:10-06:00", "utc": "2000-03-01T12:25:10Z", "ms": 951913509769.5946 }, "end": { "local": "2000-03-01T06:25:10-06:00", "utc": "2000-03-01T12:25:10Z", "ms": 951913509769.5946 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:21 on Tue 29 Feb to 18:45 on Wed 1 Mar.", "fact": "2000-02-29T22:20:54Z → 2000-03-02T00:45:18Z" }, { "step": "kaala", "text": "Sunrise is at 06:27 on the 29th and 06:25 on the 1st.", "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 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 35649 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Chicago, 2000: Wednesday 1 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": "2000-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-01", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Ekādaśī 2000 falls on Wednesday 1 March. Ekādaśī runs from 16:21 on Tue 29 Feb to 18:45 on Wed 1 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-03-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2140, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-03-03T22:11:26-06:00", "utc": "2000-03-04T04:11:26Z", "ms": 952143086101.909 }, "end": { "local": "2000-03-04T23:02:02-06:00", "utc": "2000-03-05T05:02:02Z", "ms": 952232522412.2014 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-03T22:11:26-06:00", "utc": "2000-03-04T04:11:26Z", "ms": 952143086101.909 }, "end": { "local": "2000-03-04T23:02:02-06:00", "utc": "2000-03-05T05:02:02Z", "ms": 952232522412.2014 } }, "kaala": "nishita", "days": [ { "local_date": "2000-03-03", "window": { "start": { "local": "2000-03-03T23:37:55-06:00", "utc": "2000-03-04T05:37:55Z", "ms": 952148275437.8293 }, "end": { "local": "2000-03-04T00:25:55-06:00", "utc": "2000-03-04T06:25:55Z", "ms": 952151155437.8293 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-03-04", "window": { "start": { "local": "2000-03-04T23:37:42-06:00", "utc": "2000-03-05T05:37:42Z", "ms": 952234662141.9941 }, "end": { "local": "2000-03-05T00:25:42-06:00", "utc": "2000-03-05T06:25:42Z", "ms": 952237542141.9941 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:11 on Fri 3 Mar to 23:02 on Sat 4 Mar.", "fact": "2000-03-04T04:11:26Z → 2000-03-05T05:02:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 3rd, 23:38–00:26 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 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 2140 s" }, { "step": "ruling", "text": "Mahāśivarātri, Chicago, 2000: Friday 3 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": "2000-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-03", "confidence": "determinate" } ], "quote": "In Chicago, Mahāśivarātri 2000 falls on Friday 3 March. Caturdaśī runs from 22:11 on Fri 3 Mar to 23:02 on Sat 4 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-03-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4866, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-03-02T20:44:42-06:00", "utc": "2000-03-03T02:44:42Z", "ms": 952051482137.2781 }, "end": { "local": "2000-03-03T22:11:26-06:00", "utc": "2000-03-04T04:11:26Z", "ms": 952143086101.909 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-02T20:44:42-06:00", "utc": "2000-03-03T02:44:42Z", "ms": 952051482137.2781 }, "end": { "local": "2000-03-03T22:11:26-06:00", "utc": "2000-03-04T04:11:26Z", "ms": 952143086101.909 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-03-02", "window": { "start": { "local": "2000-03-02T17:42:19-06:00", "utc": "2000-03-02T23:42:19Z", "ms": 952040538597.0454 }, "end": { "local": "2000-03-02T19:23:36-06:00", "utc": "2000-03-03T01:23:36Z", "ms": 952046615851.0029 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "2000-03-03", "window": { "start": { "local": "2000-03-03T17:43:30-06:00", "utc": "2000-03-03T23:43:30Z", "ms": 952127009709.7826 }, "end": { "local": "2000-03-03T19:24:25-06:00", "utc": "2000-03-04T01:24:25Z", "ms": 952133064570.5951 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:45 on Thu 2 Mar to 22:11 on Fri 3 Mar.", "fact": "2000-03-03T02:44:42Z → 2000-03-04T04:11:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:42–19:24 on the 2nd, 17:43–19:24 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 101 minutes on the 2nd and 101 of 101 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 4866 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Friday 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": "2000-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-03", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Friday 3 March. Trayodaśī runs from 20:45 on Thu 2 Mar to 22:11 on Fri 3 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-03-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-03-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25631, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-03-08T21:01:01-06:00", "utc": "2000-03-09T03:01:01Z", "ms": 952570860890.8718 }, "end": { "local": "2000-03-09T19:32:31-06:00", "utc": "2000-03-10T01:32:31Z", "ms": 952651951117.4749 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-08T21:01:01-06:00", "utc": "2000-03-09T03:01:01Z", "ms": 952570860890.8718 }, "end": { "local": "2000-03-09T19:32:31-06:00", "utc": "2000-03-10T01:32:31Z", "ms": 952651951117.4749 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-03-08", "window": { "start": { "local": "2000-03-08T11:37:35-06:00", "utc": "2000-03-08T17:37:35Z", "ms": 952537054678.4519 }, "end": { "local": "2000-03-08T12:25:35-06:00", "utc": "2000-03-08T18:25:35Z", "ms": 952539934678.4519 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-03-09", "window": { "start": { "local": "2000-03-09T11:37:20-06:00", "utc": "2000-03-09T17:37:20Z", "ms": 952623439666.904 }, "end": { "local": "2000-03-09T12:25:20-06:00", "utc": "2000-03-09T18:25:20Z", "ms": 952626319666.904 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:01 on Wed 8 Mar to 19:33 on Thu 9 Mar.", "fact": "2000-03-09T03:01:01Z → 2000-03-10T01:32:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 8th, 11:37–12:25 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 25631 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Thursday 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": "2000-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-09", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Thursday 9 March. Caturthī runs from 21:01 on Wed 8 Mar to 19:33 on Thu 9 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-03-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-03-15", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1400, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-03-15T07:43:06-06:00", "utc": "2000-03-15T13:43:06Z", "ms": 953127786456.7509 }, "end": { "local": "2000-03-16T05:37:01-06:00", "utc": "2000-03-16T11:37:01Z", "ms": 953206621113.6742 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-15T07:43:06-06:00", "utc": "2000-03-15T13:43:06Z", "ms": 953127786456.7509 }, "end": { "local": "2000-03-16T05:37:01-06:00", "utc": "2000-03-16T11:37:01Z", "ms": 953206621113.6742 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-03-15", "window": { "start": { "local": "2000-03-15T06:02:03-06:00", "utc": "2000-03-15T12:02:03Z", "ms": 953121723361.2181 }, "end": { "local": "2000-03-15T06:02:03-06:00", "utc": "2000-03-15T12:02:03Z", "ms": 953121723361.2181 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-03-16", "window": { "start": { "local": "2000-03-16T06:00:21-06:00", "utc": "2000-03-16T12:00:21Z", "ms": 953208021390.7585 }, "end": { "local": "2000-03-16T06:00:21-06:00", "utc": "2000-03-16T12:00:21Z", "ms": 953208021390.7585 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:43 on Wed 15 Mar to 05:37 on Thu 16 Mar.", "fact": "2000-03-15T13:43:06Z → 2000-03-16T11:37:01Z" }, { "step": "kaala", "text": "Sunrise is at 06:02 on the 15th and 06:00 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 not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1400 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Chicago, 2000: Wednesday 15 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": "2000-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-15", "confidence": "determinate" } ], "quote": "In Chicago, Āmalakī Ekādaśī 2000 falls on Wednesday 15 March. Ekādaśī runs from 07:43 on Wed 15 Mar to 05:37 on Thu 16 Mar, and is current at sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-03-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-03-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22024, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-03-17T03:35:21-06:00", "utc": "2000-03-17T09:35:21Z", "ms": 953285720682.4103 }, "end": { "local": "2000-03-18T01:42:20-06:00", "utc": "2000-03-18T07:42:20Z", "ms": 953365339836.0747 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-17T03:35:21-06:00", "utc": "2000-03-17T09:35:21Z", "ms": 953285720682.4103 }, "end": { "local": "2000-03-18T01:42:20-06:00", "utc": "2000-03-18T07:42:20Z", "ms": 953365339836.0747 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-03-16", "window": { "start": { "local": "2000-03-16T17:58:30-06:00", "utc": "2000-03-16T23:58:30Z", "ms": 953251110000.1226 }, "end": { "local": "2000-03-16T19:34:31-06:00", "utc": "2000-03-17T01:34:31Z", "ms": 953256871226.6259 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2000-03-17", "window": { "start": { "local": "2000-03-17T17:59:38-06:00", "utc": "2000-03-17T23:59:38Z", "ms": 953337577578.1792 }, "end": { "local": "2000-03-17T19:35:16-06:00", "utc": "2000-03-18T01:35:16Z", "ms": 953343316143.6647 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:35 on Fri 17 Mar to 01:42 on Sat 18 Mar.", "fact": "2000-03-17T09:35:21Z → 2000-03-18T07:42:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:35 on the 16th, 18:00–19:35 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 96 minutes on the 16th and 96 of 96 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 22024 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Friday 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": "2000-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-17", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Friday 17 March. Trayodaśī runs from 03:35 on Fri 17 Mar to 01:42 on Sat 18 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-03-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16949, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-03-19T00:03:17-06:00", "utc": "2000-03-19T06:03:17Z", "ms": 953445797047.6948 }, "end": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-19T00:03:17-06:00", "utc": "2000-03-19T06:03:17Z", "ms": 953445797047.6948 }, "end": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 } }, "kaala": "sayahna", "days": [ { "local_date": "2000-03-18", "window": { "start": { "local": "2000-03-18T15:35:59-06:00", "utc": "2000-03-18T21:35:59Z", "ms": 953415359339.3875 }, "end": { "local": "2000-03-18T18:00:45-06:00", "utc": "2000-03-19T00:00:45Z", "ms": 953424044969.4042 } }, "covered_min": 0, "window_min": 145, "qualifies": false }, { "local_date": "2000-03-19", "window": { "start": { "local": "2000-03-19T15:36:33-06:00", "utc": "2000-03-19T21:36:33Z", "ms": 953501792608.9122 }, "end": { "local": "2000-03-19T18:01:52-06:00", "utc": "2000-03-20T00:01:52Z", "ms": 953510512189.7452 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:03 on Sun 19 Mar to 22:44 on Sun 19 Mar.", "fact": "2000-03-19T06:03:17Z → 2000-03-20T04:44:21Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:36–18:01 on the 18th, 15:37–18:02 on the 19th.", "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 145 minutes on the 18th and 145 of 145 on the 19th.", "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 16949 s" }, { "step": "ruling", "text": "Holikā Dahana, Chicago, 2000: Sunday 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": "2000-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-19", "confidence": "determinate" } ], "quote": "In Chicago, Holikā Dahana 2000 falls on Sunday 19 March. Pūrṇimā runs from 00:03 on Sun 19 Mar to 22:44 on Sun 19 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16949, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-03-19T00:03:17-06:00", "utc": "2000-03-19T06:03:17Z", "ms": 953445797047.6948 }, "end": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2000-03-19T00:03:17-06:00", "utc": "2000-03-19T06:03:17Z", "ms": 953445797047.6948 }, "end": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 } }, "kaala": "sayahna", "days": [ { "local_date": "2000-03-18", "window": { "start": { "local": "2000-03-18T15:35:59-06:00", "utc": "2000-03-18T21:35:59Z", "ms": 953415359339.3875 }, "end": { "local": "2000-03-18T18:00:45-06:00", "utc": "2000-03-19T00:00:45Z", "ms": 953424044969.4042 } }, "covered_min": 0, "window_min": 145, "qualifies": false }, { "local_date": "2000-03-19", "window": { "start": { "local": "2000-03-19T15:36:33-06:00", "utc": "2000-03-19T21:36:33Z", "ms": 953501792608.9122 }, "end": { "local": "2000-03-19T18:01:52-06:00", "utc": "2000-03-20T00:01:52Z", "ms": 953510512189.7452 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2000-03-19", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:03 on Sun 19 Mar to 22:44 on Sun 19 Mar.", "fact": "2000-03-19T06:03:17Z → 2000-03-20T04:44:21Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:36–18:01 on the 18th, 15:37–18:02 on the 19th.", "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 145 minutes on the 18th and 145 of 145 on the 19th.", "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 16949 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Sunday 19 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Chicago, 2000: Monday 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": "2000-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-20", "confidence": "determinate" } ], "quote": "In Chicago, Holī 2000 falls on Monday 20 March. It is kept the day after Holikā Dahana, which falls on Sunday 19 March. Pūrṇimā runs from 00:03 on Sun 19 Mar to 22:44 on Sun 19 Mar and covers all of sāyāhna on the 19th.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25751, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 }, "end": { "local": "2000-03-20T21:52:01-06:00", "utc": "2000-03-21T03:52:01Z", "ms": 953610721382.9934 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-03-19T22:44:21-06:00", "utc": "2000-03-20T04:44:21Z", "ms": 953527460810.5253 }, "end": { "local": "2000-03-20T21:52:01-06:00", "utc": "2000-03-21T03:52:01Z", "ms": 953610721382.9934 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-03-20", "window": { "start": { "local": "2000-03-20T05:53:32-06:00", "utc": "2000-03-20T11:53:32Z", "ms": 953553211630.9601 }, "end": { "local": "2000-03-20T05:53:32-06:00", "utc": "2000-03-20T11:53:32Z", "ms": 953553211630.9601 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-03-21", "window": { "start": { "local": "2000-03-21T05:51:49-06:00", "utc": "2000-03-21T11:51:49Z", "ms": 953639508888.4203 }, "end": { "local": "2000-03-21T05:51:49-06:00", "utc": "2000-03-21T11:51:49Z", "ms": 953639508888.4203 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 22:44 on Sun 19 Mar to 21:52 on Mon 20 Mar.", "fact": "2000-03-20T04:44:21Z → 2000-03-21T03:52:01Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 20th and 05:52 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25751 s" }, { "step": "ruling", "text": "Vasantotsava, Chicago, 2000: Monday 20 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": "2000-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-20", "confidence": "determinate" } ], "quote": "In Chicago, Vasantotsava 2000 falls on Monday 20 March. Pratipadā runs from 22:44 on Sun 19 Mar to 21:52 on Mon 20 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-03-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3144, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-03-22T21:50:26-06:00", "utc": "2000-03-23T03:50:26Z", "ms": 953783426139.7838 }, "end": { "local": "2000-03-23T22:48:14-06:00", "utc": "2000-03-24T04:48:14Z", "ms": 953873293995.7549 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-03-22T21:50:26-06:00", "utc": "2000-03-23T03:50:26Z", "ms": 953783426139.7838 }, "end": { "local": "2000-03-23T22:48:14-06:00", "utc": "2000-03-24T04:48:14Z", "ms": 953873293995.7549 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-03-22", "window": { "start": { "local": "2000-03-22T20:54:08-06:00", "utc": "2000-03-23T02:54:08Z", "ms": 953780047796.9161 }, "end": { "local": "2000-03-22T20:54:08-06:00", "utc": "2000-03-23T02:54:08Z", "ms": 953780047796.9161 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-03-23", "window": { "start": { "local": "2000-03-23T21:55:50-06:00", "utc": "2000-03-24T03:55:50Z", "ms": 953870150430.6992 }, "end": { "local": "2000-03-23T21:55:50-06:00", "utc": "2000-03-24T03:55:50Z", "ms": 953870150430.6992 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:50 on Wed 22 Mar to 22:48 on Thu 23 Mar.", "fact": "2000-03-23T03:50:26Z → 2000-03-24T04:48:14Z" }, { "step": "kaala", "text": "Moonrise is at 20:54 on the 22nd and 21:56 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 3144 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Thursday 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": "2000-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-23", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Thursday 23 March. Caturthī runs from 21:50 on Wed 22 Mar to 22:48 on Thu 23 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-03-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13994, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-03-27T05:02:20-06:00", "utc": "2000-03-27T11:02:20Z", "ms": 954154939877.1643 }, "end": { "local": "2000-03-28T07:38:37-06:00", "utc": "2000-03-28T13:38:37Z", "ms": 954250717103.8344 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-03-27T05:02:20-06:00", "utc": "2000-03-27T11:02:20Z", "ms": 954154939877.1643 }, "end": { "local": "2000-03-28T07:38:37-06:00", "utc": "2000-03-28T13:38:37Z", "ms": 954250717103.8344 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-03-27", "window": { "start": { "local": "2000-03-27T11:32:09-06:00", "utc": "2000-03-27T17:32:09Z", "ms": 954178329005.1675 }, "end": { "local": "2000-03-27T12:20:09-06:00", "utc": "2000-03-27T18:20:09Z", "ms": 954181209005.1675 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-03-28", "window": { "start": { "local": "2000-03-28T11:31:51-06:00", "utc": "2000-03-28T17:31:51Z", "ms": 954264710937.6694 }, "end": { "local": "2000-03-28T12:19:51-06:00", "utc": "2000-03-28T18:19:51Z", "ms": 954267590937.6694 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:02 on Mon 27 Mar to 07:39 on Tue 28 Mar.", "fact": "2000-03-27T11:02:20Z → 2000-03-28T13:38:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 27th, 11:32–12:20 on the 28th.", "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 27th and 0 of 48 on the 28th.", "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 13994 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Chicago, 2000: Monday 27 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": "2000-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-27", "confidence": "determinate" } ], "quote": "In Chicago, Śītalāṣṭamī 2000 falls on Monday 27 March. Aṣṭamī runs from 05:02 on Mon 27 Mar to 07:39 on Tue 28 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-03-31", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23462, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-03-30T12:07:28-06:00", "utc": "2000-03-30T18:07:28Z", "ms": 954439647536.1492 }, "end": { "local": "2000-03-31T13:33:25-06:00", "utc": "2000-03-31T19:33:25Z", "ms": 954531204567.4088 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-03-30T12:07:28-06:00", "utc": "2000-03-30T18:07:28Z", "ms": 954439647536.1492 }, "end": { "local": "2000-03-31T13:33:25-06:00", "utc": "2000-03-31T19:33:25Z", "ms": 954531204567.4088 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-03-30", "window": { "start": { "local": "2000-03-30T05:36:26-06:00", "utc": "2000-03-30T11:36:26Z", "ms": 954416185513.1104 }, "end": { "local": "2000-03-30T05:36:26-06:00", "utc": "2000-03-30T11:36:26Z", "ms": 954416185513.1104 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-03-31", "window": { "start": { "local": "2000-03-31T05:34:44-06:00", "utc": "2000-03-31T11:34:44Z", "ms": 954502483627.7819 }, "end": { "local": "2000-03-31T05:34:44-06:00", "utc": "2000-03-31T11:34:44Z", "ms": 954502483627.7819 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:07 on Thu 30 Mar to 13:33 on Fri 31 Mar.", "fact": "2000-03-30T18:07:28Z → 2000-03-31T19:33:25Z" }, { "step": "kaala", "text": "Sunrise is at 05:36 on the 30th and 05:35 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 23462 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Chicago, 2000: Friday 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": "2000-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-03-31", "confidence": "determinate" } ], "quote": "In Chicago, Pāpamocanī Ekādaśī 2000 falls on Friday 31 March. Ekādaśī runs from 12:07 on Thu 30 Mar to 13:33 on Fri 31 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-04-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14386, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-04-01T14:16:31-06:00", "utc": "2000-04-01T20:16:31Z", "ms": 954620191216.4745 }, "end": { "local": "2000-04-02T15:15:06-05:00", "utc": "2000-04-02T20:15:06Z", "ms": 954706506423.3453 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-01T14:16:31-06:00", "utc": "2000-04-01T20:16:31Z", "ms": 954620191216.4745 }, "end": { "local": "2000-04-02T15:15:06-05:00", "utc": "2000-04-02T20:15:06Z", "ms": 954706506423.3453 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-04-01", "window": { "start": { "local": "2000-04-01T18:16:17-06:00", "utc": "2000-04-02T00:16:17Z", "ms": 954634576905.4707 }, "end": { "local": "2000-04-01T19:46:17-06:00", "utc": "2000-04-02T01:46:17Z", "ms": 954639977403.8296 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "2000-04-02", "window": { "start": { "local": "2000-04-02T19:17:23-05:00", "utc": "2000-04-03T00:17:23Z", "ms": 954721043082.3555 }, "end": { "local": "2000-04-02T20:47:01-05:00", "utc": "2000-04-03T01:47:01Z", "ms": 954726421284.8594 } }, "covered_min": 0, "window_min": 90, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:17 on Sat 1 Apr to 15:15 on Sun 2 Apr.", "fact": "2000-04-01T20:16:31Z → 2000-04-02T20:15:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:16–19:46 on the 1st, 19:17–20:47 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 90 of 90 minutes on the 1st and 0 of 90 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 14386 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Saturday 1 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": "2000-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-01", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Saturday 1 April. Trayodaśī runs from 14:17 on Sat 1 Apr to 15:15 on Sun 2 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-04-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-04-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33265, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-04-02T15:15:06-05:00", "utc": "2000-04-02T20:15:06Z", "ms": 954706506423.3453 }, "end": { "local": "2000-04-03T14:31:44-05:00", "utc": "2000-04-03T19:31:44Z", "ms": 954790303559.8885 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-02T15:15:06-05:00", "utc": "2000-04-02T20:15:06Z", "ms": 954706506423.3453 }, "end": { "local": "2000-04-03T14:31:44-05:00", "utc": "2000-04-03T19:31:44Z", "ms": 954790303559.8885 } }, "kaala": "nishita", "days": [ { "local_date": "2000-04-02", "window": { "start": { "local": "2000-04-03T00:29:31-05:00", "utc": "2000-04-03T05:29:31Z", "ms": 954739771341.745 }, "end": { "local": "2000-04-03T01:17:31-05:00", "utc": "2000-04-03T06:17:31Z", "ms": 954742651341.745 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-03", "window": { "start": { "local": "2000-04-04T00:29:14-05:00", "utc": "2000-04-04T05:29:14Z", "ms": 954826154069.699 }, "end": { "local": "2000-04-04T01:17:14-05:00", "utc": "2000-04-04T06:17:14Z", "ms": 954829034069.699 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:15 on Sun 2 Apr to 14:32 on Mon 3 Apr.", "fact": "2000-04-02T20:15:06Z → 2000-04-03T19:31:44Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 2nd, 00:29–01:17 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 33265 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Sunday 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": "2000-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-02", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Sunday 2 April. Caturdaśī runs from 15:15 on Sun 2 Apr to 14:32 on Mon 3 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-04-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 347, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-04-04T13:12:00-05:00", "utc": "2000-04-04T18:12:00Z", "ms": 954871919853.538 }, "end": { "local": "2000-04-05T11:23:23-05:00", "utc": "2000-04-05T16:23:23Z", "ms": 954951803176.7238 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-04T13:12:00-05:00", "utc": "2000-04-04T18:12:00Z", "ms": 954871919853.538 }, "end": { "local": "2000-04-05T11:23:23-05:00", "utc": "2000-04-05T16:23:23Z", "ms": 954951803176.7238 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-04", "window": { "start": { "local": "2000-04-04T12:29:47-05:00", "utc": "2000-04-04T17:29:47Z", "ms": 954869387142.5786 }, "end": { "local": "2000-04-04T13:17:47-05:00", "utc": "2000-04-04T18:17:47Z", "ms": 954872267142.5786 } }, "covered_min": 6, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-05", "window": { "start": { "local": "2000-04-05T12:29:30-05:00", "utc": "2000-04-05T17:29:30Z", "ms": 954955770039.0112 }, "end": { "local": "2000-04-05T13:17:30-05:00", "utc": "2000-04-05T18:17:30Z", "ms": 954958650039.0112 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:12 on Tue 4 Apr to 11:23 on Wed 5 Apr.", "fact": "2000-04-04T18:12:00Z → 2000-04-05T16:23:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 4th, 12:30–13:18 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 6 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": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 347 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Chicago, 2000: Tuesday 4 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": "2000-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-04", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Caitra) (Chaitra Navratri) 2000 falls on Tuesday 4 April. Pratipadā runs from 13:12 on Tue 4 Apr to 11:23 on Wed 5 Apr and covers 6 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11705, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-04-06T09:14:08-05:00", "utc": "2000-04-06T14:14:08Z", "ms": 955030448185.5773 }, "end": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-06T09:14:08-05:00", "utc": "2000-04-06T14:14:08Z", "ms": 955030448185.5773 }, "end": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-06", "window": { "start": { "local": "2000-04-06T12:29:13-05:00", "utc": "2000-04-06T17:29:13Z", "ms": 955042153124.9124 }, "end": { "local": "2000-04-06T13:17:13-05:00", "utc": "2000-04-06T18:17:13Z", "ms": 955045033124.9124 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-07", "window": { "start": { "local": "2000-04-07T12:28:56-05:00", "utc": "2000-04-07T17:28:56Z", "ms": 955128536413.727 }, "end": { "local": "2000-04-07T13:16:56-05:00", "utc": "2000-04-07T18:16:56Z", "ms": 955131416413.727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:14 on Thu 6 Apr to 06:52 on Fri 7 Apr.", "fact": "2000-04-06T14:14:08Z → 2000-04-07T11:52:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 6th, 12:29–13:17 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 11705 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Chicago, 2000: Thursday 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": "2000-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-06", "confidence": "determinate" } ], "quote": "In Chicago, Gaurī Tṛtīyā (Gangaur) 2000 falls on Thursday 6 April. Tṛtīyā runs from 09:14 on Thu 6 Apr to 06:52 on Fri 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11705, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-04-06T09:14:08-05:00", "utc": "2000-04-06T14:14:08Z", "ms": 955030448185.5773 }, "end": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-06T09:14:08-05:00", "utc": "2000-04-06T14:14:08Z", "ms": 955030448185.5773 }, "end": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-06", "window": { "start": { "local": "2000-04-06T12:29:13-05:00", "utc": "2000-04-06T17:29:13Z", "ms": 955042153124.9124 }, "end": { "local": "2000-04-06T13:17:13-05:00", "utc": "2000-04-06T18:17:13Z", "ms": 955045033124.9124 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-07", "window": { "start": { "local": "2000-04-07T12:28:56-05:00", "utc": "2000-04-07T17:28:56Z", "ms": 955128536413.727 }, "end": { "local": "2000-04-07T13:16:56-05:00", "utc": "2000-04-07T18:16:56Z", "ms": 955131416413.727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:14 on Thu 6 Apr to 06:52 on Fri 7 Apr.", "fact": "2000-04-06T14:14:08Z → 2000-04-07T11:52:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 6th, 12:29–13:17 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 11705 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Chicago, 2000: Thursday 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": "2000-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-06", "confidence": "determinate" } ], "quote": "In Chicago, Saubhāgya Śayana Vrata 2000 falls on Thursday 6 April. Tṛtīyā runs from 09:14 on Thu 6 Apr to 06:52 on Fri 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-04-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20191, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 }, "end": { "local": "2000-04-08T04:25:42-05:00", "utc": "2000-04-08T09:25:42Z", "ms": 955185942224.9702 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-07T06:52:25-05:00", "utc": "2000-04-07T11:52:25Z", "ms": 955108345340.0088 }, "end": { "local": "2000-04-08T04:25:42-05:00", "utc": "2000-04-08T09:25:42Z", "ms": 955185942224.9702 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-07", "window": { "start": { "local": "2000-04-07T12:28:56-05:00", "utc": "2000-04-07T17:28:56Z", "ms": 955128536413.727 }, "end": { "local": "2000-04-07T13:16:56-05:00", "utc": "2000-04-07T18:16:56Z", "ms": 955131416413.727 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-08", "window": { "start": { "local": "2000-04-08T12:28:40-05:00", "utc": "2000-04-08T17:28:40Z", "ms": 955214919918.9849 }, "end": { "local": "2000-04-08T13:16:40-05:00", "utc": "2000-04-08T18:16:40Z", "ms": 955217799918.9849 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:52 on Fri 7 Apr to 04:26 on Sat 8 Apr.", "fact": "2000-04-07T11:52:25Z → 2000-04-08T09:25:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 7th, 12:29–13:17 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 20191 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Friday 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": "2000-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-07", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Friday 7 April. Caturthī runs from 06:52 on Fri 7 Apr to 04:26 on Sat 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28978, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-04-08T04:25:42-05:00", "utc": "2000-04-08T09:25:42Z", "ms": 955185942224.9702 }, "end": { "local": "2000-04-09T02:00:16-05:00", "utc": "2000-04-09T07:00:16Z", "ms": 955263615989.5469 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-08T04:25:42-05:00", "utc": "2000-04-08T09:25:42Z", "ms": 955185942224.9702 }, "end": { "local": "2000-04-09T02:00:16-05:00", "utc": "2000-04-09T07:00:16Z", "ms": 955263615989.5469 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-08", "window": { "start": { "local": "2000-04-08T12:28:40-05:00", "utc": "2000-04-08T17:28:40Z", "ms": 955214919918.9849 }, "end": { "local": "2000-04-08T13:16:40-05:00", "utc": "2000-04-08T18:16:40Z", "ms": 955217799918.9849 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-09", "window": { "start": { "local": "2000-04-09T12:28:24-05:00", "utc": "2000-04-09T17:28:24Z", "ms": 955301303654.6401 }, "end": { "local": "2000-04-09T13:16:24-05:00", "utc": "2000-04-09T18:16:24Z", "ms": 955304183654.6401 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:26 on Sat 8 Apr to 02:00 on Sun 9 Apr.", "fact": "2000-04-08T09:25:42Z → 2000-04-09T07:00:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 8th, 12:28–13:16 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28978 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Chicago, 2000: Saturday 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": "2000-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-08", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pañcamī 2000 falls on Saturday 8 April. Pañcamī runs from 04:26 on Sat 8 Apr to 02:00 on Sun 9 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22606, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-04-10T21:31:05-05:00", "utc": "2000-04-11T02:31:05Z", "ms": 955420264558.2467 }, "end": { "local": "2000-04-11T19:32:38-05:00", "utc": "2000-04-12T00:32:38Z", "ms": 955499557649.5654 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-10T21:31:05-05:00", "utc": "2000-04-11T02:31:05Z", "ms": 955420264558.2467 }, "end": { "local": "2000-04-11T19:32:38-05:00", "utc": "2000-04-12T00:32:38Z", "ms": 955499557649.5654 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-10", "window": { "start": { "local": "2000-04-10T12:28:08-05:00", "utc": "2000-04-10T17:28:08Z", "ms": 955387687635.3467 }, "end": { "local": "2000-04-10T13:16:08-05:00", "utc": "2000-04-10T18:16:08Z", "ms": 955390567635.3467 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-04-11", "window": { "start": { "local": "2000-04-11T12:27:52-05:00", "utc": "2000-04-11T17:27:52Z", "ms": 955474071876.6171 }, "end": { "local": "2000-04-11T13:15:52-05:00", "utc": "2000-04-11T18:15:52Z", "ms": 955476951876.6171 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:31 on Mon 10 Apr to 19:33 on Tue 11 Apr.", "fact": "2000-04-11T02:31:05Z → 2000-04-12T00:32:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 10th, 12:28–13:16 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 22606 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Chicago, 2000: Tuesday 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": "2000-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-11", "confidence": "determinate" } ], "quote": "In Chicago, Bhavānī Utpatti 2000 falls on Tuesday 11 April. Aṣṭamī runs from 21:31 on Mon 10 Apr to 19:33 on Tue 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16261, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2000-04-11T19:32:38-05:00", "utc": "2000-04-12T00:32:38Z", "ms": 955499557649.5654 }, "end": { "local": "2000-04-12T17:46:38-05:00", "utc": "2000-04-12T22:46:38Z", "ms": 955579597746.6252 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-11T19:32:38-05:00", "utc": "2000-04-12T00:32:38Z", "ms": 955499557649.5654 }, "end": { "local": "2000-04-12T17:46:38-05:00", "utc": "2000-04-12T22:46:38Z", "ms": 955579597746.6252 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-11", "window": { "start": { "local": "2000-04-11T12:27:52-05:00", "utc": "2000-04-11T17:27:52Z", "ms": 955474071876.6171 }, "end": { "local": "2000-04-11T13:15:52-05:00", "utc": "2000-04-11T18:15:52Z", "ms": 955476951876.6171 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-04-12", "window": { "start": { "local": "2000-04-12T12:27:36-05:00", "utc": "2000-04-12T17:27:36Z", "ms": 955560456394.8528 }, "end": { "local": "2000-04-12T13:15:36-05:00", "utc": "2000-04-12T18:15:36Z", "ms": 955563336394.8528 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 19:33 on Tue 11 Apr to 17:47 on Wed 12 Apr.", "fact": "2000-04-12T00:32:38Z → 2000-04-12T22:46:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 11th, 12:28–13:16 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 16261 s" }, { "step": "ruling", "text": "Rāma Navamī, Chicago, 2000: Wednesday 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": "2000-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-12", "confidence": "determinate" } ], "quote": "In Chicago, Rāma Navamī 2000 falls on Wednesday 12 April. Navamī runs from 19:33 on Tue 11 Apr to 17:47 on Wed 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2337, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2000-04-13T06:52:10-05:00", "utc": "2000-04-13T11:52:10Z", "ms": 955626729653.2512 }, "end": { "local": "2000-05-14T03:44:32-05:00", "utc": "2000-05-14T08:44:32Z", "ms": 958293872219.8943 } }, "span": { "of": "transit", "start": { "local": "2000-04-13T06:52:10-05:00", "utc": "2000-04-13T11:52:10Z", "ms": 955626729653.2512 }, "end": { "local": "2000-04-13T06:52:10-05:00", "utc": "2000-04-13T11:52:10Z", "ms": 955626729653.2512 } }, "kaala": "day", "days": [ { "local_date": "2000-04-12", "window": { "start": { "local": "2000-04-12T06:14:49-05:00", "utc": "2000-04-12T11:14:49Z", "ms": 955538088773.3909 }, "end": { "local": "2000-04-13T06:13:12-05:00", "utc": "2000-04-13T11:13:12Z", "ms": 955624392392.526 } }, "covered_min": 0, "window_min": 1438, "qualifies": false }, { "local_date": "2000-04-13", "window": { "start": { "local": "2000-04-13T06:13:12-05:00", "utc": "2000-04-13T11:13:12Z", "ms": 955624392392.526 }, "end": { "local": "2000-04-14T06:11:37-05:00", "utc": "2000-04-14T11:11:37Z", "ms": 955710696648.4092 } }, "covered_min": 1, "window_min": 1438, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 06:52 on Thu 13 Apr.", "fact": "2000-04-13T11:52:10Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:15 on the 12th, and from 06:13 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 2337 s" }, { "step": "ruling", "text": "Vaiśākhī, Chicago, 2000: Thursday 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": "2000-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2000-04-13", "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": "2000-04-13", "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 Chicago, Vaiśākhī 2000 falls on Thursday 13 April. The Sun enters Meṣa at 06:52 on Thu 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-04-14", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31384, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-04-13T16:13:42-05:00", "utc": "2000-04-13T21:13:42Z", "ms": 955660422371.4719 }, "end": { "local": "2000-04-14T14:54:41-05:00", "utc": "2000-04-14T19:54:41Z", "ms": 955742080733.9316 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-13T16:13:42-05:00", "utc": "2000-04-13T21:13:42Z", "ms": 955660422371.4719 }, "end": { "local": "2000-04-14T14:54:41-05:00", "utc": "2000-04-14T19:54:41Z", "ms": 955742080733.9316 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-04-13", "window": { "start": { "local": "2000-04-13T06:13:12-05:00", "utc": "2000-04-13T11:13:12Z", "ms": 955624392392.526 }, "end": { "local": "2000-04-13T06:13:12-05:00", "utc": "2000-04-13T11:13:12Z", "ms": 955624392392.526 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-04-14", "window": { "start": { "local": "2000-04-14T06:11:37-05:00", "utc": "2000-04-14T11:11:37Z", "ms": 955710696648.4092 }, "end": { "local": "2000-04-14T06:11:37-05:00", "utc": "2000-04-14T11:11:37Z", "ms": 955710696648.4092 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:14 on Thu 13 Apr to 14:55 on Fri 14 Apr.", "fact": "2000-04-13T21:13:42Z → 2000-04-14T19:54:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 13th and 06:12 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 31384 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Chicago, 2000: Friday 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": "2000-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-14", "confidence": "determinate" } ], "quote": "In Chicago, Kāmadā Ekādaśī 2000 falls on Friday 14 April. Ekādaśī runs from 16:14 on Thu 13 Apr to 14:55 on Fri 14 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-04-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-04-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20439, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-04-15T13:51:03-05:00", "utc": "2000-04-15T18:51:03Z", "ms": 955824663353.8743 }, "end": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-15T13:51:03-05:00", "utc": "2000-04-15T18:51:03Z", "ms": 955824663353.8743 }, "end": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-04-15", "window": { "start": { "local": "2000-04-15T19:31:42-05:00", "utc": "2000-04-16T00:31:42Z", "ms": 955845101998.1057 }, "end": { "local": "2000-04-15T20:56:36-05:00", "utc": "2000-04-16T01:56:36Z", "ms": 955850196025.7759 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "2000-04-16", "window": { "start": { "local": "2000-04-16T19:32:48-05:00", "utc": "2000-04-17T00:32:48Z", "ms": 955931567974.2252 }, "end": { "local": "2000-04-16T20:57:21-05:00", "utc": "2000-04-17T01:57:21Z", "ms": 955936640720.998 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:51 on Sat 15 Apr to 13:05 on Sun 16 Apr.", "fact": "2000-04-15T18:51:03Z → 2000-04-16T18:05:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:32–20:57 on the 15th, 19:33–20:57 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 85 of 85 minutes on the 15th and 0 of 85 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 20439 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Saturday 15 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": "2000-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-15", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Saturday 15 April. Trayodaśī runs from 13:51 on Sat 15 Apr to 13:05 on Sun 16 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 559, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-04-15T13:51:03-05:00", "utc": "2000-04-15T18:51:03Z", "ms": 955824663353.8743 }, "end": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-15T13:51:03-05:00", "utc": "2000-04-15T18:51:03Z", "ms": 955824663353.8743 }, "end": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-15", "window": { "start": { "local": "2000-04-15T12:26:52-05:00", "utc": "2000-04-15T17:26:52Z", "ms": 955819611786.4468 }, "end": { "local": "2000-04-15T13:14:52-05:00", "utc": "2000-04-15T18:14:52Z", "ms": 955822491786.4468 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-04-16", "window": { "start": { "local": "2000-04-16T12:26:38-05:00", "utc": "2000-04-16T17:26:38Z", "ms": 955905997589.9287 }, "end": { "local": "2000-04-16T13:14:38-05:00", "utc": "2000-04-16T18:14:38Z", "ms": 955908877589.9287 } }, "covered_min": 39, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:51 on Sat 15 Apr to 13:05 on Sun 16 Apr.", "fact": "2000-04-15T18:51:03Z → 2000-04-16T18:05:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 15th, 12:27–13:15 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 39 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 559 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Chicago, 2000: Sunday 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": "2000-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-15", "confidence": "determinate" } ], "quote": "In Chicago, Anaṅga Trayodaśī 2000 falls on Sunday 16 April. Trayodaśī runs from 13:51 on Sat 15 Apr to 13:05 on Sun 16 Apr and covers 39 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 559, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 }, "end": { "local": "2000-04-17T12:40:48-05:00", "utc": "2000-04-17T17:40:48Z", "ms": 955993248321.3936 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-16T13:05:18-05:00", "utc": "2000-04-16T18:05:18Z", "ms": 955908318141.0679 }, "end": { "local": "2000-04-17T12:40:48-05:00", "utc": "2000-04-17T17:40:48Z", "ms": 955993248321.3936 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-16", "window": { "start": { "local": "2000-04-16T12:26:38-05:00", "utc": "2000-04-16T17:26:38Z", "ms": 955905997589.9287 }, "end": { "local": "2000-04-16T13:14:38-05:00", "utc": "2000-04-16T18:14:38Z", "ms": 955908877589.9287 } }, "covered_min": 9, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-17", "window": { "start": { "local": "2000-04-17T12:26:24-05:00", "utc": "2000-04-17T17:26:24Z", "ms": 955992383760.4816 }, "end": { "local": "2000-04-17T13:14:24-05:00", "utc": "2000-04-17T18:14:24Z", "ms": 955995263760.4816 } }, "covered_min": 14, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:05 on Sun 16 Apr to 12:41 on Mon 17 Apr.", "fact": "2000-04-16T18:05:18Z → 2000-04-17T17:40:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 16th, 12:26–13:14 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 9 of 48 minutes on the 16th and 14 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 559 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Chicago, 2000: Monday 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": "2000-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-17", "confidence": "determinate" } ], "quote": "In Chicago, Viṣṇudamanaka Caturdaśī 2000 falls on Monday 17 April. Caturdaśī runs from 13:05 on Sun 16 Apr to 12:41 on Mon 17 Apr and covers 14 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 9 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 865, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-04-17T12:40:48-05:00", "utc": "2000-04-17T17:40:48Z", "ms": 955993248321.3936 }, "end": { "local": "2000-04-18T12:41:31-05:00", "utc": "2000-04-18T17:41:31Z", "ms": 956079690538.4719 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2000-04-17T12:40:48-05:00", "utc": "2000-04-17T17:40:48Z", "ms": 955993248321.3936 }, "end": { "local": "2000-04-18T12:41:31-05:00", "utc": "2000-04-18T17:41:31Z", "ms": 956079690538.4719 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-04-17", "window": { "start": { "local": "2000-04-17T12:26:24-05:00", "utc": "2000-04-17T17:26:24Z", "ms": 955992383760.4816 }, "end": { "local": "2000-04-17T13:14:24-05:00", "utc": "2000-04-17T18:14:24Z", "ms": 955995263760.4816 } }, "covered_min": 34, "window_min": 48, "qualifies": true }, { "local_date": "2000-04-18", "window": { "start": { "local": "2000-04-18T12:26:10-05:00", "utc": "2000-04-18T17:26:10Z", "ms": 956078770316.0756 }, "end": { "local": "2000-04-18T13:14:10-05:00", "utc": "2000-04-18T18:14:10Z", "ms": 956081650316.0756 } }, "covered_min": 15, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:41 on Mon 17 Apr to 12:42 on Tue 18 Apr.", "fact": "2000-04-17T17:40:48Z → 2000-04-18T17:41:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 17th, 12:26–13:14 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 34 of 48 minutes on the 17th and 15 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 865 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Chicago, 2000: Tuesday 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": "2000-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-18", "confidence": "determinate" } ], "quote": "In Chicago, Caitrī Pūrṇimā 2000 falls on Tuesday 18 April. Pūrṇimā runs from 12:41 on Mon 17 Apr to 12:42 on Tue 18 Apr and covers 15 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 34 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-04-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21010, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-04-21T15:46:17-05:00", "utc": "2000-04-21T20:46:17Z", "ms": 956349977145.4271 }, "end": { "local": "2000-04-22T17:49:06-05:00", "utc": "2000-04-22T22:49:06Z", "ms": 956443746434.5796 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-04-21T15:46:17-05:00", "utc": "2000-04-21T20:46:17Z", "ms": 956349977145.4271 }, "end": { "local": "2000-04-22T17:49:06-05:00", "utc": "2000-04-22T22:49:06Z", "ms": 956443746434.5796 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-04-21", "window": { "start": { "local": "2000-04-21T22:42:52-05:00", "utc": "2000-04-22T03:42:52Z", "ms": 956374971979.3098 }, "end": { "local": "2000-04-21T22:42:52-05:00", "utc": "2000-04-22T03:42:52Z", "ms": 956374971979.3098 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-04-22", "window": { "start": { "local": "2000-04-22T23:39:17-05:00", "utc": "2000-04-23T04:39:17Z", "ms": 956464756685.5399 }, "end": { "local": "2000-04-22T23:39:17-05:00", "utc": "2000-04-23T04:39:17Z", "ms": 956464756685.5399 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:46 on Fri 21 Apr to 17:49 on Sat 22 Apr.", "fact": "2000-04-21T20:46:17Z → 2000-04-22T22:49:06Z" }, { "step": "kaala", "text": "Moonrise is at 22:43 on the 21st and 23:39 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21010 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Friday 21 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": "2000-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-21", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Friday 21 April. Caturthī runs from 15:46 on Fri 21 Apr to 17:49 on Sat 22 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-04-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-04-30", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 932, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-04-29T06:04:52-05:00", "utc": "2000-04-29T11:04:52Z", "ms": 957006291947.1744 }, "end": { "local": "2000-04-30T06:09:59-05:00", "utc": "2000-04-30T11:09:59Z", "ms": 957092998850.8724 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-04-29T06:04:52-05:00", "utc": "2000-04-29T11:04:52Z", "ms": 957006291947.1744 }, "end": { "local": "2000-04-30T06:09:59-05:00", "utc": "2000-04-30T11:09:59Z", "ms": 957092998850.8724 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-04-29", "window": { "start": { "local": "2000-04-29T05:49:20-05:00", "utc": "2000-04-29T10:49:20Z", "ms": 957005359987.8986 }, "end": { "local": "2000-04-29T05:49:20-05:00", "utc": "2000-04-29T10:49:20Z", "ms": 957005359987.8986 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-04-30", "window": { "start": { "local": "2000-04-30T05:47:59-05:00", "utc": "2000-04-30T10:47:59Z", "ms": 957091679040.092 }, "end": { "local": "2000-04-30T05:47:59-05:00", "utc": "2000-04-30T10:47:59Z", "ms": 957091679040.092 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:05 on Sat 29 Apr to 06:10 on Sun 30 Apr.", "fact": "2000-04-29T11:04:52Z → 2000-04-30T11:09:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:49 on the 29th and 05:48 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 932 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Chicago, 2000: Sunday 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": "2000-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-04-30", "confidence": "determinate" } ], "quote": "In Chicago, Varūthinī Ekādaśī 2000 falls on Sunday 30 April. Ekādaśī runs from 06:05 on Sat 29 Apr to 06:10 on Sun 30 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-04-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-05-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24461, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-05-01T05:25:49-05:00", "utc": "2000-05-01T10:25:49Z", "ms": 957176749109.4813 }, "end": { "local": "2000-05-02T03:56:25-05:00", "utc": "2000-05-02T08:56:25Z", "ms": 957257785379.9098 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-01T05:25:49-05:00", "utc": "2000-05-01T10:25:49Z", "ms": 957176749109.4813 }, "end": { "local": "2000-05-02T03:56:25-05:00", "utc": "2000-05-02T08:56:25Z", "ms": 957257785379.9098 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-04-30", "window": { "start": { "local": "2000-04-30T19:48:10-05:00", "utc": "2000-05-01T00:48:10Z", "ms": 957142089932.4088 }, "end": { "local": "2000-04-30T21:07:58-05:00", "utc": "2000-05-01T02:07:58Z", "ms": 957146877847.9576 } }, "covered_min": 0, "window_min": 80, "qualifies": false }, { "local_date": "2000-05-01", "window": { "start": { "local": "2000-05-01T19:49:15-05:00", "utc": "2000-05-02T00:49:15Z", "ms": 957228555315.2897 }, "end": { "local": "2000-05-01T21:08:44-05:00", "utc": "2000-05-02T02:08:44Z", "ms": 957233324045.9916 } }, "covered_min": 79, "window_min": 79, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:26 on Mon 1 May to 03:56 on Tue 2 May.", "fact": "2000-05-01T10:25:49Z → 2000-05-02T08:56:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:48–21:08 on the 30th, 19:49–21:09 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 80 minutes on the 30th and 79 of 79 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24461 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Monday 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": "2000-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-01", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Monday 1 May. Trayodaśī runs from 05:26 on Mon 1 May to 03:56 on Tue 2 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-05-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-05-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2260, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-05-02T03:56:25-05:00", "utc": "2000-05-02T08:56:25Z", "ms": 957257785379.9098 }, "end": { "local": "2000-05-03T01:48:52-05:00", "utc": "2000-05-03T06:48:52Z", "ms": 957336532054.6016 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-02T03:56:25-05:00", "utc": "2000-05-02T08:56:25Z", "ms": 957257785379.9098 }, "end": { "local": "2000-05-03T01:48:52-05:00", "utc": "2000-05-03T06:48:52Z", "ms": 957336532054.6016 } }, "kaala": "nishita", "days": [ { "local_date": "2000-05-01", "window": { "start": { "local": "2000-05-02T00:23:18-05:00", "utc": "2000-05-02T05:23:18Z", "ms": 957244998055.4219 }, "end": { "local": "2000-05-02T01:11:18-05:00", "utc": "2000-05-02T06:11:18Z", "ms": 957247878055.4219 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-05-02", "window": { "start": { "local": "2000-05-03T00:23:12-05:00", "utc": "2000-05-03T05:23:12Z", "ms": 957331392053.2158 }, "end": { "local": "2000-05-03T01:11:12-05:00", "utc": "2000-05-03T06:11:12Z", "ms": 957334272053.2158 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:56 on Tue 2 May to 01:49 on Wed 3 May.", "fact": "2000-05-02T08:56:25Z → 2000-05-03T06:48:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:23–01:11 on the 1st, 00:23–01:11 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 2260 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Tuesday 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": "2000-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-02", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Tuesday 2 May. Caturdaśī runs from 03:56 on Tue 2 May to 01:49 on Wed 3 May and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9836, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-05-05T17:09:39-05:00", "utc": "2000-05-05T22:09:39Z", "ms": 957564579363.0543 }, "end": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-05T17:09:39-05:00", "utc": "2000-05-05T22:09:39Z", "ms": 957564579363.0543 }, "end": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-05-05", "window": { "start": { "local": "2000-05-05T19:53:35-05:00", "utc": "2000-05-06T00:53:35Z", "ms": 957574415066.804 }, "end": { "local": "2000-05-05T21:11:49-05:00", "utc": "2000-05-06T02:11:49Z", "ms": 957579109024.1726 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "2000-05-06", "window": { "start": { "local": "2000-05-06T19:54:39-05:00", "utc": "2000-05-07T00:54:39Z", "ms": 957660879416.8684 }, "end": { "local": "2000-05-06T21:12:35-05:00", "utc": "2000-05-07T02:12:35Z", "ms": 957665555210.6238 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:10 on Fri 5 May to 14:03 on Sat 6 May.", "fact": "2000-05-05T22:09:39Z → 2000-05-06T19:03:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:54–21:12 on the 5th, 19:55–21:13 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 78 of 78 minutes on the 5th and 0 of 78 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 9836 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Chicago, 2000: Friday 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": "2000-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-05", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Jayantī 2000 falls on Friday 5 May. Tṛtīyā runs from 17:10 on Fri 5 May to 14:03 on Sat 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13075, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-05-05T17:09:39-05:00", "utc": "2000-05-05T22:09:39Z", "ms": 957564579363.0543 }, "end": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-05T17:09:39-05:00", "utc": "2000-05-05T22:09:39Z", "ms": 957564579363.0543 }, "end": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 } }, "kaala": "purvahna", "days": [ { "local_date": "2000-05-05", "window": { "start": { "local": "2000-05-05T05:41:33-05:00", "utc": "2000-05-05T10:41:33Z", "ms": 957523293006.9143 }, "end": { "local": "2000-05-05T10:25:34-05:00", "utc": "2000-05-05T15:25:34Z", "ms": 957540333693.5442 } }, "covered_min": 0, "window_min": 284, "qualifies": false }, { "local_date": "2000-05-06", "window": { "start": { "local": "2000-05-06T05:40:20-05:00", "utc": "2000-05-06T10:40:20Z", "ms": 957609619747.0692 }, "end": { "local": "2000-05-06T10:25:06-05:00", "utc": "2000-05-06T15:25:06Z", "ms": 957626706303.669 } }, "covered_min": 285, "window_min": 285, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:10 on Fri 5 May to 14:03 on Sat 6 May.", "fact": "2000-05-05T22:09:39Z → 2000-05-06T19:03:02Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:42–10:26 on the 5th, 05:40–10:25 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 284 minutes on the 5th and 285 of 285 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 13075 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Chicago, 2000: Saturday 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": "2000-05-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-06", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Tṛtīyā 2000 falls on Saturday 6 May. Tṛtīyā runs from 17:10 on Fri 5 May to 14:03 on Sat 6 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4765, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-05-07T11:04:01-05:00", "utc": "2000-05-07T16:04:01Z", "ms": 957715440965.8129 }, "end": { "local": "2000-05-08T08:19:24-05:00", "utc": "2000-05-08T13:19:24Z", "ms": 957791964201.794 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-07T11:04:01-05:00", "utc": "2000-05-07T16:04:01Z", "ms": 957715440965.8129 }, "end": { "local": "2000-05-08T08:19:24-05:00", "utc": "2000-05-08T13:19:24Z", "ms": 957791964201.794 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-07", "window": { "start": { "local": "2000-05-07T12:23:26-05:00", "utc": "2000-05-07T17:23:26Z", "ms": 957720205669.5438 }, "end": { "local": "2000-05-07T13:11:26-05:00", "utc": "2000-05-07T18:11:26Z", "ms": 957723085669.5438 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-05-08", "window": { "start": { "local": "2000-05-08T12:23:22-05:00", "utc": "2000-05-08T17:23:22Z", "ms": 957806602298.1255 }, "end": { "local": "2000-05-08T13:11:22-05:00", "utc": "2000-05-08T18:11:22Z", "ms": 957809482298.1255 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 11:04 on Sun 7 May to 08:19 on Mon 8 May.", "fact": "2000-05-07T16:04:01Z → 2000-05-08T13:19:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 7th, 12:23–13:11 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 4765 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Chicago, 2000: Sunday 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": "2000-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-07", "confidence": "determinate" } ], "quote": "In Chicago, Śaṅkara Jayantī 2000 falls on Sunday 7 May. Pañcamī runs from 11:04 on Sun 7 May to 08:19 on Mon 8 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-05-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3092, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 }, "end": { "local": "2000-05-07T11:04:01-05:00", "utc": "2000-05-07T16:04:01Z", "ms": 957715440965.8129 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-06T14:03:02-05:00", "utc": "2000-05-06T19:03:02Z", "ms": 957639781633.9843 }, "end": { "local": "2000-05-07T11:04:01-05:00", "utc": "2000-05-07T16:04:01Z", "ms": 957715440965.8129 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-06", "window": { "start": { "local": "2000-05-06T12:23:30-05:00", "utc": "2000-05-06T17:23:30Z", "ms": 957633809581.9688 }, "end": { "local": "2000-05-06T13:11:30-05:00", "utc": "2000-05-06T18:11:30Z", "ms": 957636689581.9688 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-05-07", "window": { "start": { "local": "2000-05-07T12:23:26-05:00", "utc": "2000-05-07T17:23:26Z", "ms": 957720205669.5438 }, "end": { "local": "2000-05-07T13:11:26-05:00", "utc": "2000-05-07T18:11:26Z", "ms": 957723085669.5438 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:03 on Sat 6 May to 11:04 on Sun 7 May.", "fact": "2000-05-06T19:03:02Z → 2000-05-07T16:04:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 6th, 12:23–13:11 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 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": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 3092 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Sunday 7 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": "2000-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-06", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Sunday 7 May. Caturthī runs from 14:03 on Sat 6 May to 11:04 on Sun 7 May, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-05-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23339, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-05-09T05:54:21-05:00", "utc": "2000-05-09T10:54:21Z", "ms": 957869660594.4899 }, "end": { "local": "2000-05-10T03:52:17-05:00", "utc": "2000-05-10T08:52:17Z", "ms": 957948736712.3242 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-09T05:54:21-05:00", "utc": "2000-05-09T10:54:21Z", "ms": 957869660594.4899 }, "end": { "local": "2000-05-10T03:52:17-05:00", "utc": "2000-05-10T08:52:17Z", "ms": 957948736712.3242 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-09", "window": { "start": { "local": "2000-05-09T12:23:19-05:00", "utc": "2000-05-09T17:23:19Z", "ms": 957892999466.8235 }, "end": { "local": "2000-05-09T13:11:19-05:00", "utc": "2000-05-09T18:11:19Z", "ms": 957895879466.8235 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-05-10", "window": { "start": { "local": "2000-05-10T12:23:17-05:00", "utc": "2000-05-10T17:23:17Z", "ms": 957979397175.4241 }, "end": { "local": "2000-05-10T13:11:17-05:00", "utc": "2000-05-10T18:11:17Z", "ms": 957982277175.4241 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:54 on Tue 9 May to 03:52 on Wed 10 May.", "fact": "2000-05-09T10:54:21Z → 2000-05-10T08:52:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 9th, 12:23–13:11 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 23339 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Chicago, 2000: Tuesday 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": "2000-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-09", "confidence": "determinate" } ], "quote": "In Chicago, Gaṅgotpatti (Ganga Saptami) 2000 falls on Tuesday 9 May. Saptamī runs from 05:54 on Tue 9 May to 03:52 on Wed 10 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-05-13", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18952, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-05-13T00:16:35-05:00", "utc": "2000-05-13T05:16:35Z", "ms": 958194995366.2794 }, "end": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-13T00:16:35-05:00", "utc": "2000-05-13T05:16:35Z", "ms": 958194995366.2794 }, "end": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-05-13", "window": { "start": { "local": "2000-05-13T05:32:27-05:00", "utc": "2000-05-13T10:32:27Z", "ms": 958213947365.2751 }, "end": { "local": "2000-05-13T05:32:27-05:00", "utc": "2000-05-13T10:32:27Z", "ms": 958213947365.2751 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-05-14", "window": { "start": { "local": "2000-05-14T05:31:26-05:00", "utc": "2000-05-14T10:31:26Z", "ms": 958300286037.2831 }, "end": { "local": "2000-05-14T05:31:26-05:00", "utc": "2000-05-14T10:31:26Z", "ms": 958300286037.2831 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:17 on Sat 13 May to 23:55 on Sat 13 May.", "fact": "2000-05-13T05:16:35Z → 2000-05-14T04:54:40Z" }, { "step": "kaala", "text": "Sunrise is at 05:32 on the 13th and 05:31 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18952 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Chicago, 2000: Saturday 13 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": "2000-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-13", "confidence": "determinate" } ], "quote": "In Chicago, Mohinī Ekādaśī 2000 falls on Saturday 13 May. Ekādaśī runs from 00:17 on Sat 13 May to 23:55 on Sat 13 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-05-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38606, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 }, "end": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 }, "end": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-13", "window": { "start": { "local": "2000-05-13T12:23:14-05:00", "utc": "2000-05-13T17:23:14Z", "ms": 958238593545.9387 }, "end": { "local": "2000-05-13T13:11:14-05:00", "utc": "2000-05-13T18:11:14Z", "ms": 958241473545.9387 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-05-14", "window": { "start": { "local": "2000-05-14T12:23:13-05:00", "utc": "2000-05-14T17:23:13Z", "ms": 958324993420.32 }, "end": { "local": "2000-05-14T13:11:13-05:00", "utc": "2000-05-14T18:11:13Z", "ms": 958327873420.32 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:55 on Sat 13 May to 23:57 on Sun 14 May.", "fact": "2000-05-14T04:54:40Z → 2000-05-15T04:57:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 13th, 12:23–13:11 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 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38606 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Chicago, 2000: Sunday 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": "2000-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Dvādaśī 2000 falls on Sunday 14 May. Dvādaśī runs from 23:55 on Sat 13 May to 23:57 on Sun 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38606, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 }, "end": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-13T23:54:40-05:00", "utc": "2000-05-14T04:54:40Z", "ms": 958280079576.272 }, "end": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-13", "window": { "start": { "local": "2000-05-13T12:23:14-05:00", "utc": "2000-05-13T17:23:14Z", "ms": 958238593545.9387 }, "end": { "local": "2000-05-13T13:11:14-05:00", "utc": "2000-05-13T18:11:14Z", "ms": 958241473545.9387 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-05-14", "window": { "start": { "local": "2000-05-14T12:23:13-05:00", "utc": "2000-05-14T17:23:13Z", "ms": 958324993420.32 }, "end": { "local": "2000-05-14T13:11:13-05:00", "utc": "2000-05-14T18:11:13Z", "ms": 958327873420.32 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:55 on Sat 13 May to 23:57 on Sun 14 May.", "fact": "2000-05-14T04:54:40Z → 2000-05-15T04:57:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 13th, 12:23–13:11 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 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38606 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Chicago, 2000: Sunday 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": "2000-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Rukmiṇī Dvādaśī 2000 falls on Sunday 14 May. Dvādaśī runs from 23:55 on Sat 13 May to 23:57 on Sun 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-05-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9511, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 }, "end": { "local": "2000-05-16T00:24:19-05:00", "utc": "2000-05-16T05:24:19Z", "ms": 958454659240.1409 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-14T23:57:11-05:00", "utc": "2000-05-15T04:57:11Z", "ms": 958366630772.8676 }, "end": { "local": "2000-05-16T00:24:19-05:00", "utc": "2000-05-16T05:24:19Z", "ms": 958454659240.1409 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-05-14", "window": { "start": { "local": "2000-05-14T20:03:01-05:00", "utc": "2000-05-15T01:03:01Z", "ms": 958352580803.3568 }, "end": { "local": "2000-05-14T21:18:40-05:00", "utc": "2000-05-15T02:18:40Z", "ms": 958357120208.7139 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "2000-05-15", "window": { "start": { "local": "2000-05-15T20:04:01-05:00", "utc": "2000-05-16T01:04:01Z", "ms": 958439041331.933 }, "end": { "local": "2000-05-15T21:19:25-05:00", "utc": "2000-05-16T02:19:25Z", "ms": 958443564929.6982 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:57 on Sun 14 May to 00:24 on Tue 16 May.", "fact": "2000-05-15T04:57:11Z → 2000-05-16T05:24:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:03–21:19 on the 14th, 20:04–21:19 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 14th and 75 of 75 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9511 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Monday 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": "2000-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-15", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Monday 15 May. Trayodaśī runs from 23:57 on Sun 14 May to 00:24 on Tue 16 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-05-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11094, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-05-16T00:24:19-05:00", "utc": "2000-05-16T05:24:19Z", "ms": 958454659240.1409 }, "end": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-16T00:24:19-05:00", "utc": "2000-05-16T05:24:19Z", "ms": 958454659240.1409 }, "end": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-05-15", "window": { "start": { "local": "2000-05-15T20:04:01-05:00", "utc": "2000-05-16T01:04:01Z", "ms": 958439041331.933 }, "end": { "local": "2000-05-15T21:19:25-05:00", "utc": "2000-05-16T02:19:25Z", "ms": 958443564929.6982 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "2000-05-16", "window": { "start": { "local": "2000-05-16T20:05:01-05:00", "utc": "2000-05-17T01:05:01Z", "ms": 958525501280.9828 }, "end": { "local": "2000-05-16T21:20:09-05:00", "utc": "2000-05-17T02:20:09Z", "ms": 958530009374.5599 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:24 on Tue 16 May to 01:17 on Wed 17 May.", "fact": "2000-05-16T05:24:19Z → 2000-05-17T06:16:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:04–21:19 on the 15th, 20:05–21:20 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 75 minutes on the 15th and 75 of 75 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: paraviddha → only-day · margin 11094 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Chicago, 2000: Tuesday 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": "2000-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-16", "confidence": "determinate" } ], "quote": "In Chicago, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2000 falls on Tuesday 16 May. Caturdaśī runs from 00:24 on Tue 16 May to 01:17 on Wed 17 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35333, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 }, "end": { "local": "2000-05-18T02:34:26-05:00", "utc": "2000-05-18T07:34:26Z", "ms": 958635265620.6134 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 }, "end": { "local": "2000-05-18T02:34:26-05:00", "utc": "2000-05-18T07:34:26Z", "ms": 958635265620.6134 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-17", "window": { "start": { "local": "2000-05-17T12:23:16-05:00", "utc": "2000-05-17T17:23:16Z", "ms": 958584196300.5557 }, "end": { "local": "2000-05-17T13:11:16-05:00", "utc": "2000-05-17T18:11:16Z", "ms": 958587076300.5557 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-05-18", "window": { "start": { "local": "2000-05-18T12:23:18-05:00", "utc": "2000-05-18T17:23:18Z", "ms": 958670598343.5549 }, "end": { "local": "2000-05-18T13:11:18-05:00", "utc": "2000-05-18T18:11:18Z", "ms": 958673478343.5549 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:17 on Wed 17 May to 02:34 on Thu 18 May.", "fact": "2000-05-17T06:16:36Z → 2000-05-18T07:34:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 17th, 12:23–13:11 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 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35333 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Chicago, 2000: Wednesday 17 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": "2000-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-17", "confidence": "determinate" } ], "quote": "In Chicago, Buddha Pūrṇimā 2000 falls on Wednesday 17 May. Pūrṇimā runs from 01:17 on Wed 17 May to 02:34 on Thu 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35333, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 }, "end": { "local": "2000-05-18T02:34:26-05:00", "utc": "2000-05-18T07:34:26Z", "ms": 958635265620.6134 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-17T01:16:36-05:00", "utc": "2000-05-17T06:16:36Z", "ms": 958544195737.4215 }, "end": { "local": "2000-05-18T02:34:26-05:00", "utc": "2000-05-18T07:34:26Z", "ms": 958635265620.6134 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-05-17", "window": { "start": { "local": "2000-05-17T12:23:16-05:00", "utc": "2000-05-17T17:23:16Z", "ms": 958584196300.5557 }, "end": { "local": "2000-05-17T13:11:16-05:00", "utc": "2000-05-17T18:11:16Z", "ms": 958587076300.5557 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-05-18", "window": { "start": { "local": "2000-05-18T12:23:18-05:00", "utc": "2000-05-18T17:23:18Z", "ms": 958670598343.5549 }, "end": { "local": "2000-05-18T13:11:18-05:00", "utc": "2000-05-18T18:11:18Z", "ms": 958673478343.5549 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:17 on Wed 17 May to 02:34 on Thu 18 May.", "fact": "2000-05-17T06:16:36Z → 2000-05-18T07:34:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 17th, 12:23–13:11 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 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35333 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Chicago, 2000: Wednesday 17 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": "2000-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-17", "confidence": "determinate" } ], "quote": "In Chicago, Sampat Gaurī Vrata 2000 falls on Wednesday 17 May. Pūrṇimā runs from 01:17 on Wed 17 May to 02:34 on Thu 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-05-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37325, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-05-21T08:47:51-05:00", "utc": "2000-05-21T13:47:51Z", "ms": 958916871166.5428 }, "end": { "local": "2000-05-22T11:22:43-05:00", "utc": "2000-05-22T16:22:43Z", "ms": 959012562812.1733 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-21T08:47:51-05:00", "utc": "2000-05-21T13:47:51Z", "ms": 958916871166.5428 }, "end": { "local": "2000-05-22T11:22:43-05:00", "utc": "2000-05-22T16:22:43Z", "ms": 959012562812.1733 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-05-20", "window": { "start": { "local": "2000-05-20T22:25:46-05:00", "utc": "2000-05-21T03:25:46Z", "ms": 958879545977.0472 }, "end": { "local": "2000-05-20T22:25:46-05:00", "utc": "2000-05-21T03:25:46Z", "ms": 958879545977.0472 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-05-21", "window": { "start": { "local": "2000-05-21T23:15:53-05:00", "utc": "2000-05-22T04:15:53Z", "ms": 958968952722.7676 }, "end": { "local": "2000-05-21T23:15:53-05:00", "utc": "2000-05-22T04:15:53Z", "ms": 958968952722.7676 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:48 on Sun 21 May to 11:23 on Mon 22 May.", "fact": "2000-05-21T13:47:51Z → 2000-05-22T16:22:43Z" }, { "step": "kaala", "text": "Moonrise is at 22:26 on the 20th and 23:16 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 20th and is 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 37325 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Sunday 21 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": "2000-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-21", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Sunday 21 May. Caturthī runs from 08:48 on Sun 21 May to 11:23 on Mon 22 May and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-05-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-05-29", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35192, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-05-28T19:33:07-05:00", "utc": "2000-05-29T00:33:07Z", "ms": 959560386840.0013 }, "end": { "local": "2000-05-29T18:20:35-05:00", "utc": "2000-05-29T23:20:35Z", "ms": 959642434766.7622 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-28T19:33:07-05:00", "utc": "2000-05-29T00:33:07Z", "ms": 959560386840.0013 }, "end": { "local": "2000-05-29T18:20:35-05:00", "utc": "2000-05-29T23:20:35Z", "ms": 959642434766.7622 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-05-29", "window": { "start": { "local": "2000-05-29T05:19:38-05:00", "utc": "2000-05-29T10:19:38Z", "ms": 959595578411.2383 }, "end": { "local": "2000-05-29T05:19:38-05:00", "utc": "2000-05-29T10:19:38Z", "ms": 959595578411.2383 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-05-30", "window": { "start": { "local": "2000-05-30T05:19:07-05:00", "utc": "2000-05-30T10:19:07Z", "ms": 959681946538.7577 }, "end": { "local": "2000-05-30T05:19:07-05:00", "utc": "2000-05-30T10:19:07Z", "ms": 959681946538.7577 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:33 on Sun 28 May to 18:21 on Mon 29 May.", "fact": "2000-05-29T00:33:07Z → 2000-05-29T23:20:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 29th and 05:19 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 35192 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Chicago, 2000: Monday 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": "2000-05-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-29", "confidence": "determinate" } ], "quote": "In Chicago, Aparā Ekādaśī 2000 falls on Monday 29 May. Ekādaśī runs from 19:33 on Sun 28 May to 18:21 on Mon 29 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-05-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-05-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14118, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-05-30T16:22:22-05:00", "utc": "2000-05-30T21:22:22Z", "ms": 959721741906.3153 }, "end": { "local": "2000-05-31T13:45:42-05:00", "utc": "2000-05-31T18:45:42Z", "ms": 959798741910.33 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-30T16:22:22-05:00", "utc": "2000-05-30T21:22:22Z", "ms": 959721741906.3153 }, "end": { "local": "2000-05-31T13:45:42-05:00", "utc": "2000-05-31T18:45:42Z", "ms": 959798741910.33 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-05-30", "window": { "start": { "local": "2000-05-30T20:17:40-05:00", "utc": "2000-05-31T01:17:40Z", "ms": 959735859539.3729 }, "end": { "local": "2000-05-30T21:29:47-05:00", "utc": "2000-05-31T02:29:47Z", "ms": 959740187159.2312 } }, "covered_min": 72, "window_min": 72, "qualifies": true }, { "local_date": "2000-05-31", "window": { "start": { "local": "2000-05-31T20:18:26-05:00", "utc": "2000-06-01T01:18:26Z", "ms": 959822306275.137 }, "end": { "local": "2000-05-31T21:30:24-05:00", "utc": "2000-06-01T02:30:24Z", "ms": 959826623954.3925 } }, "covered_min": 0, "window_min": 72, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:22 on Tue 30 May to 13:46 on Wed 31 May.", "fact": "2000-05-30T21:22:22Z → 2000-05-31T18:45:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:18–21:30 on the 30th, 20:18–21:30 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 72 of 72 minutes on the 30th and 0 of 72 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 14118 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Tuesday 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": "2000-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-30", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Tuesday 30 May. Trayodaśī runs from 16:22 on Tue 30 May to 13:46 on Wed 31 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-05-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-05-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34038, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-05-31T13:45:42-05:00", "utc": "2000-05-31T18:45:42Z", "ms": 959798741910.33 }, "end": { "local": "2000-06-01T10:39:35-05:00", "utc": "2000-06-01T15:39:35Z", "ms": 959873975141.6992 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-05-31T13:45:42-05:00", "utc": "2000-05-31T18:45:42Z", "ms": 959798741910.33 }, "end": { "local": "2000-06-01T10:39:35-05:00", "utc": "2000-06-01T15:39:35Z", "ms": 959873975141.6992 } }, "kaala": "nishita", "days": [ { "local_date": "2000-05-30", "window": { "start": { "local": "2000-05-31T00:24:08-05:00", "utc": "2000-05-31T05:24:08Z", "ms": 959750648113.8413 }, "end": { "local": "2000-05-31T01:12:08-05:00", "utc": "2000-05-31T06:12:08Z", "ms": 959753528113.8413 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-05-31", "window": { "start": { "local": "2000-06-01T00:24:18-05:00", "utc": "2000-06-01T05:24:18Z", "ms": 959837057572.3451 }, "end": { "local": "2000-06-01T01:12:18-05:00", "utc": "2000-06-01T06:12:18Z", "ms": 959839937572.3451 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:46 on Wed 31 May to 10:40 on Thu 1 Jun.", "fact": "2000-05-31T18:45:42Z → 2000-06-01T15:39:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:24–01:12 on the 30th, 00:24–01:12 on the 31st.", "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 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34038 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Wednesday 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": "2000-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-05-31", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Wednesday 31 May. Caturdaśī runs from 13:46 on Wed 31 May to 10:40 on Thu 1 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-05-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26806, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-06-04T00:04:32-05:00", "utc": "2000-06-04T05:04:32Z", "ms": 960095071676.0322 }, "end": { "local": "2000-06-04T20:39:55-05:00", "utc": "2000-06-05T01:39:55Z", "ms": 960169195489.7325 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-04T00:04:32-05:00", "utc": "2000-06-04T05:04:32Z", "ms": 960095071676.0322 }, "end": { "local": "2000-06-04T20:39:55-05:00", "utc": "2000-06-05T01:39:55Z", "ms": 960169195489.7325 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-06-03", "window": { "start": { "local": "2000-06-03T12:24:59-05:00", "utc": "2000-06-03T17:24:59Z", "ms": 960053099116.2332 }, "end": { "local": "2000-06-03T13:12:59-05:00", "utc": "2000-06-03T18:12:59Z", "ms": 960055979116.2332 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-06-04", "window": { "start": { "local": "2000-06-04T12:25:09-05:00", "utc": "2000-06-04T17:25:09Z", "ms": 960139509020.959 }, "end": { "local": "2000-06-04T13:13:09-05:00", "utc": "2000-06-04T18:13:09Z", "ms": 960142389020.959 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:05 on Sun 4 Jun to 20:40 on Sun 4 Jun.", "fact": "2000-06-04T05:04:32Z → 2000-06-05T01:39:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 3rd, 12:25–13:13 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 26806 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Chicago, 2000: Sunday 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": "2000-06-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-04", "confidence": "determinate" } ], "quote": "In Chicago, Rambhā Tṛtīyā 2000 falls on Sunday 4 June. Tṛtīyā runs from 00:05 on Sun 4 Jun to 20:40 on Sun 4 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-06-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15606, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-06-04T20:39:55-05:00", "utc": "2000-06-05T01:39:55Z", "ms": 960169195489.7325 }, "end": { "local": "2000-06-05T17:33:25-05:00", "utc": "2000-06-05T22:33:25Z", "ms": 960244405389.8009 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-04T20:39:55-05:00", "utc": "2000-06-05T01:39:55Z", "ms": 960169195489.7325 }, "end": { "local": "2000-06-05T17:33:25-05:00", "utc": "2000-06-05T22:33:25Z", "ms": 960244405389.8009 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-06-04", "window": { "start": { "local": "2000-06-04T12:25:09-05:00", "utc": "2000-06-04T17:25:09Z", "ms": 960139509020.959 }, "end": { "local": "2000-06-04T13:13:09-05:00", "utc": "2000-06-04T18:13:09Z", "ms": 960142389020.959 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-06-05", "window": { "start": { "local": "2000-06-05T12:25:19-05:00", "utc": "2000-06-05T17:25:19Z", "ms": 960225919232.7433 }, "end": { "local": "2000-06-05T13:13:19-05:00", "utc": "2000-06-05T18:13:19Z", "ms": 960228799232.7433 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:40 on Sun 4 Jun to 17:33 on Mon 5 Jun.", "fact": "2000-06-05T01:39:55Z → 2000-06-05T22:33:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 4th, 12:25–13:13 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 15606 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Monday 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": "2000-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-05", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Monday 5 June. Caturthī runs from 20:40 on Sun 4 Jun to 17:33 on Mon 5 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 923, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-06-06T14:52:00-05:00", "utc": "2000-06-06T19:52:00Z", "ms": 960321119926.0594 }, "end": { "local": "2000-06-07T12:41:03-05:00", "utc": "2000-06-07T17:41:03Z", "ms": 960399663233.6122 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-06T14:52:00-05:00", "utc": "2000-06-06T19:52:00Z", "ms": 960321119926.0594 }, "end": { "local": "2000-06-07T12:41:03-05:00", "utc": "2000-06-07T17:41:03Z", "ms": 960399663233.6122 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-06-06", "window": { "start": { "local": "2000-06-06T12:25:30-05:00", "utc": "2000-06-06T17:25:30Z", "ms": 960312329728.4363 }, "end": { "local": "2000-06-06T13:13:30-05:00", "utc": "2000-06-06T18:13:30Z", "ms": 960315209728.4363 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-06-07", "window": { "start": { "local": "2000-06-07T12:25:40-05:00", "utc": "2000-06-07T17:25:40Z", "ms": 960398740485.9205 }, "end": { "local": "2000-06-07T13:13:40-05:00", "utc": "2000-06-07T18:13:40Z", "ms": 960401620485.9205 } }, "covered_min": 15, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:52 on Tue 6 Jun to 12:41 on Wed 7 Jun.", "fact": "2000-06-06T19:52:00Z → 2000-06-07T17:41:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 6th, 12:26–13:14 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 15 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 923 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Chicago, 2000: Wednesday 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": "2000-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-07", "confidence": "determinate" } ], "quote": "In Chicago, Araṇya Gaurī Vrata 2000 falls on Wednesday 7 June. Ṣaṣṭhī runs from 14:52 on Tue 6 Jun to 12:41 on Wed 7 Jun and covers 15 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 923, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-06-06T14:52:00-05:00", "utc": "2000-06-06T19:52:00Z", "ms": 960321119926.0594 }, "end": { "local": "2000-06-07T12:41:03-05:00", "utc": "2000-06-07T17:41:03Z", "ms": 960399663233.6122 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-06T14:52:00-05:00", "utc": "2000-06-06T19:52:00Z", "ms": 960321119926.0594 }, "end": { "local": "2000-06-07T12:41:03-05:00", "utc": "2000-06-07T17:41:03Z", "ms": 960399663233.6122 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-06-06", "window": { "start": { "local": "2000-06-06T12:25:30-05:00", "utc": "2000-06-06T17:25:30Z", "ms": 960312329728.4363 }, "end": { "local": "2000-06-06T13:13:30-05:00", "utc": "2000-06-06T18:13:30Z", "ms": 960315209728.4363 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-06-07", "window": { "start": { "local": "2000-06-07T12:25:40-05:00", "utc": "2000-06-07T17:25:40Z", "ms": 960398740485.9205 }, "end": { "local": "2000-06-07T13:13:40-05:00", "utc": "2000-06-07T18:13:40Z", "ms": 960401620485.9205 } }, "covered_min": 15, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:52 on Tue 6 Jun to 12:41 on Wed 7 Jun.", "fact": "2000-06-06T19:52:00Z → 2000-06-07T17:41:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 6th, 12:26–13:14 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 15 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 923 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Chicago, 2000: Wednesday 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": "2000-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-07", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2000 falls on Wednesday 7 June. Ṣaṣṭhī runs from 14:52 on Tue 6 Jun to 12:41 on Wed 7 Jun and covers 15 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-06-12", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16333, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-06-11T09:47:36-05:00", "utc": "2000-06-11T14:47:36Z", "ms": 960734856295.6185 }, "end": { "local": "2000-06-12T10:28:59-05:00", "utc": "2000-06-12T15:28:59Z", "ms": 960823738616.0564 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-11T09:47:36-05:00", "utc": "2000-06-11T14:47:36Z", "ms": 960734856295.6185 }, "end": { "local": "2000-06-12T10:28:59-05:00", "utc": "2000-06-12T15:28:59Z", "ms": 960823738616.0564 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-06-11", "window": { "start": { "local": "2000-06-11T05:15:23-05:00", "utc": "2000-06-11T10:15:23Z", "ms": 960718523342.3629 }, "end": { "local": "2000-06-11T05:15:23-05:00", "utc": "2000-06-11T10:15:23Z", "ms": 960718523342.3629 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-06-12", "window": { "start": { "local": "2000-06-12T05:15:18-05:00", "utc": "2000-06-12T10:15:18Z", "ms": 960804918077.3146 }, "end": { "local": "2000-06-12T05:15:18-05:00", "utc": "2000-06-12T10:15:18Z", "ms": 960804918077.3146 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:48 on Sun 11 Jun to 10:29 on Mon 12 Jun.", "fact": "2000-06-11T14:47:36Z → 2000-06-12T15:28:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 11th and 05:15 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 16333 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Chicago, 2000: Monday 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": "2000-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-12", "confidence": "determinate" } ], "quote": "In Chicago, Nirjalā Ekādaśī 2000 falls on Monday 12 June. Ekādaśī runs from 09:48 on Sun 11 Jun to 10:29 on Mon 12 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2858, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-06-12T10:28:59-05:00", "utc": "2000-06-12T15:28:59Z", "ms": 960823738616.0564 }, "end": { "local": "2000-06-13T11:39:12-05:00", "utc": "2000-06-13T16:39:12Z", "ms": 960914351593.342 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-12T10:28:59-05:00", "utc": "2000-06-12T15:28:59Z", "ms": 960823738616.0564 }, "end": { "local": "2000-06-13T11:39:12-05:00", "utc": "2000-06-13T16:39:12Z", "ms": 960914351593.342 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-06-12", "window": { "start": { "local": "2000-06-12T12:26:37-05:00", "utc": "2000-06-12T17:26:37Z", "ms": 960830797488.2542 }, "end": { "local": "2000-06-12T13:14:37-05:00", "utc": "2000-06-12T18:14:37Z", "ms": 960833677488.2542 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-06-13", "window": { "start": { "local": "2000-06-13T12:26:49-05:00", "utc": "2000-06-13T17:26:49Z", "ms": 960917209396.301 }, "end": { "local": "2000-06-13T13:14:49-05:00", "utc": "2000-06-13T18:14:49Z", "ms": 960920089396.301 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:29 on Mon 12 Jun to 11:39 on Tue 13 Jun.", "fact": "2000-06-12T15:28:59Z → 2000-06-13T16:39:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 12th, 12:27–13:15 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2858 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Chicago, 2000: Monday 12 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": "2000-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-12", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Rāma Dvādaśī 2000 falls on Monday 12 June. Dvādaśī runs from 10:29 on Mon 12 Jun to 11:39 on Tue 13 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-06-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25921, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-06-13T11:39:12-05:00", "utc": "2000-06-13T16:39:12Z", "ms": 960914351593.342 }, "end": { "local": "2000-06-14T13:14:49-05:00", "utc": "2000-06-14T18:14:49Z", "ms": 961006488522.3499 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-13T11:39:12-05:00", "utc": "2000-06-13T16:39:12Z", "ms": 960914351593.342 }, "end": { "local": "2000-06-14T13:14:49-05:00", "utc": "2000-06-14T18:14:49Z", "ms": 961006488522.3499 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-06-13", "window": { "start": { "local": "2000-06-13T20:26:24-05:00", "utc": "2000-06-14T01:26:24Z", "ms": 960945983938.3337 }, "end": { "local": "2000-06-13T21:36:55-05:00", "utc": "2000-06-14T02:36:55Z", "ms": 960950214568.6692 } }, "covered_min": 71, "window_min": 71, "qualifies": true }, { "local_date": "2000-06-14", "window": { "start": { "local": "2000-06-14T20:26:49-05:00", "utc": "2000-06-15T01:26:49Z", "ms": 961032409192.6365 }, "end": { "local": "2000-06-14T21:37:17-05:00", "utc": "2000-06-15T02:37:17Z", "ms": 961036636567.3563 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:39 on Tue 13 Jun to 13:15 on Wed 14 Jun.", "fact": "2000-06-13T16:39:12Z → 2000-06-14T18:14:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:26–21:37 on the 13th, 20:27–21:37 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 71 of 71 minutes on the 13th and 0 of 70 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 25921 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Tuesday 13 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": "2000-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-13", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Tuesday 13 June. Trayodaśī runs from 11:39 on Tue 13 Jun to 13:15 on Wed 14 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10832, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-06-15T15:12:08-05:00", "utc": "2000-06-15T20:12:08Z", "ms": 961099927920.1147 }, "end": { "local": "2000-06-16T17:27:03-05:00", "utc": "2000-06-16T22:27:03Z", "ms": 961194422626.8538 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-15T15:12:08-05:00", "utc": "2000-06-15T20:12:08Z", "ms": 961099927920.1147 }, "end": { "local": "2000-06-16T17:27:03-05:00", "utc": "2000-06-16T22:27:03Z", "ms": 961194422626.8538 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-06-15", "window": { "start": { "local": "2000-06-15T20:27:13-05:00", "utc": "2000-06-16T01:27:13Z", "ms": 961118832633.0574 }, "end": { "local": "2000-06-15T21:37:37-05:00", "utc": "2000-06-16T02:37:37Z", "ms": 961123057262.67 } }, "covered_min": 70, "window_min": 70, "qualifies": true }, { "local_date": "2000-06-16", "window": { "start": { "local": "2000-06-16T20:27:34-05:00", "utc": "2000-06-17T01:27:34Z", "ms": 961205254231.9327 }, "end": { "local": "2000-06-16T21:37:57-05:00", "utc": "2000-06-17T02:37:57Z", "ms": 961209476628.9913 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:12 on Thu 15 Jun to 17:27 on Fri 16 Jun.", "fact": "2000-06-15T20:12:08Z → 2000-06-16T22:27:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:27–21:38 on the 15th, 20:28–21:38 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 70 of 70 minutes on the 15th and 0 of 70 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: purvaviddha → only-day · margin 10832 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Chicago, 2000: Thursday 15 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": "2000-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-15", "confidence": "determinate" } ], "quote": "In Chicago, Vaṭa Sāvitrī Vrata 2000 falls on Thursday 15 June. Pūrṇimā runs from 15:12 on Thu 15 Jun to 17:27 on Fri 16 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-06-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8425, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-06-20T01:01:31-05:00", "utc": "2000-06-20T06:01:31Z", "ms": 961480890992.2014 }, "end": { "local": "2000-06-21T03:23:58-05:00", "utc": "2000-06-21T08:23:58Z", "ms": 961575838222.093 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-20T01:01:31-05:00", "utc": "2000-06-20T06:01:31Z", "ms": 961480890992.2014 }, "end": { "local": "2000-06-21T03:23:58-05:00", "utc": "2000-06-21T08:23:58Z", "ms": 961575838222.093 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-06-19", "window": { "start": { "local": "2000-06-19T22:41:06-05:00", "utc": "2000-06-20T03:41:06Z", "ms": 961472466063.604 }, "end": { "local": "2000-06-19T22:41:06-05:00", "utc": "2000-06-20T03:41:06Z", "ms": 961472466063.604 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-06-20", "window": { "start": { "local": "2000-06-20T23:18:17-05:00", "utc": "2000-06-21T04:18:17Z", "ms": 961561096971.0078 }, "end": { "local": "2000-06-20T23:18:17-05:00", "utc": "2000-06-21T04:18:17Z", "ms": 961561096971.0078 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:02 on Tue 20 Jun to 03:24 on Wed 21 Jun.", "fact": "2000-06-20T06:01:31Z → 2000-06-21T08:23:58Z" }, { "step": "kaala", "text": "Moonrise is at 22:41 on the 19th and 23:18 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 8425 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Tuesday 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": "2000-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-20", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Tuesday 20 June. Caturthī runs from 01:02 on Tue 20 Jun to 03:24 on Wed 21 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-06-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-06-27", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2026, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-06-27T05:51:43-05:00", "utc": "2000-06-27T10:51:43Z", "ms": 962103103089.7502 }, "end": { "local": "2000-06-28T03:42:02-05:00", "utc": "2000-06-28T08:42:02Z", "ms": 962181721749.222 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-27T05:51:43-05:00", "utc": "2000-06-27T10:51:43Z", "ms": 962103103089.7502 }, "end": { "local": "2000-06-28T03:42:02-05:00", "utc": "2000-06-28T08:42:02Z", "ms": 962181721749.222 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-06-27", "window": { "start": { "local": "2000-06-27T05:17:57-05:00", "utc": "2000-06-27T10:17:57Z", "ms": 962101076930.5079 }, "end": { "local": "2000-06-27T05:17:57-05:00", "utc": "2000-06-27T10:17:57Z", "ms": 962101076930.5079 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-06-28", "window": { "start": { "local": "2000-06-28T05:18:22-05:00", "utc": "2000-06-28T10:18:22Z", "ms": 962187502486.0674 }, "end": { "local": "2000-06-28T05:18:22-05:00", "utc": "2000-06-28T10:18:22Z", "ms": 962187502486.0674 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:52 on Tue 27 Jun to 03:42 on Wed 28 Jun.", "fact": "2000-06-27T10:51:43Z → 2000-06-28T08:42:02Z" }, { "step": "kaala", "text": "Sunrise is at 05:18 on the 27th and 05:18 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2026 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Chicago, 2000: Tuesday 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": "2000-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-27", "confidence": "determinate" } ], "quote": "In Chicago, Yoginī Ekādaśī 2000 falls on Tuesday 27 June. Ekādaśī runs from 05:52 on Tue 27 Jun to 03:42 on Wed 28 Jun, and is current at sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-06-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-06-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-29", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 14, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-06-29T00:55:32-05:00", "utc": "2000-06-29T05:55:32Z", "ms": 962258131506.2109 }, "end": { "local": "2000-06-29T21:40:11-05:00", "utc": "2000-06-30T02:40:11Z", "ms": 962332811478.787 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-29T00:55:32-05:00", "utc": "2000-06-29T05:55:32Z", "ms": 962258131506.2109 }, "end": { "local": "2000-06-29T21:40:11-05:00", "utc": "2000-06-30T02:40:11Z", "ms": 962332811478.787 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-06-28", "window": { "start": { "local": "2000-06-28T20:29:22-05:00", "utc": "2000-06-29T01:29:22Z", "ms": 962242161507.958 }, "end": { "local": "2000-06-28T21:39:57-05:00", "utc": "2000-06-29T02:39:57Z", "ms": 962246397273.3927 } }, "covered_min": 0, "window_min": 71, "qualifies": false }, { "local_date": "2000-06-29", "window": { "start": { "local": "2000-06-29T20:29:17-05:00", "utc": "2000-06-30T01:29:17Z", "ms": 962328557246.9164 }, "end": { "local": "2000-06-29T21:39:57-05:00", "utc": "2000-06-30T02:39:57Z", "ms": 962332797437.7235 } }, "covered_min": 71, "window_min": 71, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:56 on Thu 29 Jun to 21:40 on Thu 29 Jun.", "fact": "2000-06-29T05:55:32Z → 2000-06-30T02:40:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 28th, 20:29–21:40 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 71 minutes on the 28th and 71 of 71 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 14 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Thursday 29 June.", "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": "2000-06-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-29", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Thursday 29 June. Trayodaśī runs from 00:56 on Thu 29 Jun to 21:40 on Thu 29 Jun and covers all of pradoṣa that evening. It is 0 min 14 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-06-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-06-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-06-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10206, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-06-29T21:40:11-05:00", "utc": "2000-06-30T02:40:11Z", "ms": 962332811478.787 }, "end": { "local": "2000-06-30T18:05:06-05:00", "utc": "2000-06-30T23:05:06Z", "ms": 962406306325.9199 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-06-29T21:40:11-05:00", "utc": "2000-06-30T02:40:11Z", "ms": 962332811478.787 }, "end": { "local": "2000-06-30T18:05:06-05:00", "utc": "2000-06-30T23:05:06Z", "ms": 962406306325.9199 } }, "kaala": "nishita", "days": [ { "local_date": "2000-06-29", "window": { "start": { "local": "2000-06-30T00:30:18-05:00", "utc": "2000-06-30T05:30:18Z", "ms": 962343017962.4434 }, "end": { "local": "2000-06-30T01:18:18-05:00", "utc": "2000-06-30T06:18:18Z", "ms": 962345897962.4434 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-06-30", "window": { "start": { "local": "2000-07-01T00:30:30-05:00", "utc": "2000-07-01T05:30:30Z", "ms": 962429430061.2769 }, "end": { "local": "2000-07-01T01:18:30-05:00", "utc": "2000-07-01T06:18:30Z", "ms": 962432310061.2769 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:40 on Thu 29 Jun to 18:05 on Fri 30 Jun.", "fact": "2000-06-30T02:40:11Z → 2000-06-30T23:05:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 29th, 00:31–01:19 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 10206 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Thursday 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": "2000-06-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-06-29", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Thursday 29 June. Caturdaśī runs from 21:40 on Thu 29 Jun to 18:05 on Fri 30 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-06-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6971, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2000-07-02T10:34:26-05:00", "utc": "2000-07-02T15:34:26Z", "ms": 962552066036.3901 }, "end": { "local": "2000-07-03T06:58:19-05:00", "utc": "2000-07-03T11:58:19Z", "ms": 962625498866.2059 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-02T10:34:26-05:00", "utc": "2000-07-02T15:34:26Z", "ms": 962552066036.3901 }, "end": { "local": "2000-07-03T06:58:19-05:00", "utc": "2000-07-03T11:58:19Z", "ms": 962625498866.2059 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-07-02", "window": { "start": { "local": "2000-07-02T12:30:37-05:00", "utc": "2000-07-02T17:30:37Z", "ms": 962559036610.2433 }, "end": { "local": "2000-07-02T13:18:37-05:00", "utc": "2000-07-02T18:18:37Z", "ms": 962561916610.2433 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-07-03", "window": { "start": { "local": "2000-07-03T12:30:47-05:00", "utc": "2000-07-03T17:30:47Z", "ms": 962645447094.3179 }, "end": { "local": "2000-07-03T13:18:47-05:00", "utc": "2000-07-03T18:18:47Z", "ms": 962648327094.3179 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:34 on Sun 2 Jul to 06:58 on Mon 3 Jul.", "fact": "2000-07-02T15:34:26Z → 2000-07-03T11:58:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 2nd, 12:31–13:19 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 6971 s" }, { "step": "ruling", "text": "Rathayātrā, Chicago, 2000: Sunday 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": "2000-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-02", "confidence": "determinate" } ], "quote": "In Chicago, Rathayātrā 2000 falls on Sunday 2 July. Dvitīyā runs from 10:34 on Sun 2 Jul to 06:58 on Mon 3 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-07-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31813, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-07-04T03:40:45-05:00", "utc": "2000-07-04T08:40:45Z", "ms": 962700044601.9644 }, "end": { "local": "2000-07-05T00:50:07-05:00", "utc": "2000-07-05T05:50:07Z", "ms": 962776206520.8795 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-04T03:40:45-05:00", "utc": "2000-07-04T08:40:45Z", "ms": 962700044601.9644 }, "end": { "local": "2000-07-05T00:50:07-05:00", "utc": "2000-07-05T05:50:07Z", "ms": 962776206520.8795 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-07-04", "window": { "start": { "local": "2000-07-04T12:30:57-05:00", "utc": "2000-07-04T17:30:57Z", "ms": 962731857258.0059 }, "end": { "local": "2000-07-04T13:18:57-05:00", "utc": "2000-07-04T18:18:57Z", "ms": 962734737258.0059 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-07-05", "window": { "start": { "local": "2000-07-05T12:31:07-05:00", "utc": "2000-07-05T17:31:07Z", "ms": 962818267077.4287 }, "end": { "local": "2000-07-05T13:19:07-05:00", "utc": "2000-07-05T18:19:07Z", "ms": 962821147077.4287 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:41 on Tue 4 Jul to 00:50 on Wed 5 Jul.", "fact": "2000-07-04T08:40:45Z → 2000-07-05T05:50:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 4th, 12:31–13:19 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 31813 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Tuesday 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": "2000-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-04", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Tuesday 4 July. Caturthī runs from 03:41 on Tue 4 Jul to 00:50 on Wed 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-07-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33269, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-07-05T00:50:07-05:00", "utc": "2000-07-05T05:50:07Z", "ms": 962776206520.8795 }, "end": { "local": "2000-07-05T22:33:36-05:00", "utc": "2000-07-06T03:33:36Z", "ms": 962854416322.4257 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-05T00:50:07-05:00", "utc": "2000-07-05T05:50:07Z", "ms": 962776206520.8795 }, "end": { "local": "2000-07-05T22:33:36-05:00", "utc": "2000-07-06T03:33:36Z", "ms": 962854416322.4257 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-07-04", "window": { "start": { "local": "2000-07-04T12:30:57-05:00", "utc": "2000-07-04T17:30:57Z", "ms": 962731857258.0059 }, "end": { "local": "2000-07-04T13:18:57-05:00", "utc": "2000-07-04T18:18:57Z", "ms": 962734737258.0059 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-07-05", "window": { "start": { "local": "2000-07-05T12:31:07-05:00", "utc": "2000-07-05T17:31:07Z", "ms": 962818267077.4287 }, "end": { "local": "2000-07-05T13:19:07-05:00", "utc": "2000-07-05T18:19:07Z", "ms": 962821147077.4287 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:50 on Wed 5 Jul to 22:34 on Wed 5 Jul.", "fact": "2000-07-05T05:50:07Z → 2000-07-06T03:33:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 4th, 12:31–13:19 on the 5th.", "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 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33269 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Chicago, 2000: Wednesday 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": "2000-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Pañcamī 2000 falls on Wednesday 5 July. Pañcamī runs from 00:50 on Wed 5 Jul to 22:34 on Wed 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24219, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-07-06T20:56:47-05:00", "utc": "2000-07-07T01:56:47Z", "ms": 962935006863.4521 }, "end": { "local": "2000-07-07T20:03:04-05:00", "utc": "2000-07-08T01:03:04Z", "ms": 963018184165.3049 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-06T20:56:47-05:00", "utc": "2000-07-07T01:56:47Z", "ms": 962935006863.4521 }, "end": { "local": "2000-07-07T20:03:04-05:00", "utc": "2000-07-08T01:03:04Z", "ms": 963018184165.3049 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-07-06", "window": { "start": { "local": "2000-07-06T12:31:17-05:00", "utc": "2000-07-06T17:31:17Z", "ms": 962904676530.7986 }, "end": { "local": "2000-07-06T13:19:17-05:00", "utc": "2000-07-06T18:19:17Z", "ms": 962907556530.7986 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-07-07", "window": { "start": { "local": "2000-07-07T12:31:26-05:00", "utc": "2000-07-07T17:31:26Z", "ms": 962991085598.3433 }, "end": { "local": "2000-07-07T13:19:26-05:00", "utc": "2000-07-07T18:19:26Z", "ms": 962993965598.3433 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:57 on Thu 6 Jul to 20:03 on Fri 7 Jul.", "fact": "2000-07-07T01:56:47Z → 2000-07-08T01:03:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 6th, 12:31–13:19 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī 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 24219 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Chicago, 2000: Friday 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": "2000-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-07", "confidence": "determinate" } ], "quote": "In Chicago, Vivasvat Saptamī 2000 falls on Friday 7 July. Saptamī runs from 20:57 on Thu 6 Jul to 20:03 on Fri 7 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-07-11", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22047, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-07-10T21:36:52-05:00", "utc": "2000-07-11T02:36:52Z", "ms": 963283012337.2424 }, "end": { "local": "2000-07-11T23:19:33-05:00", "utc": "2000-07-12T04:19:33Z", "ms": 963375572796.1793 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-10T21:36:52-05:00", "utc": "2000-07-11T02:36:52Z", "ms": 963283012337.2424 }, "end": { "local": "2000-07-11T23:19:33-05:00", "utc": "2000-07-12T04:19:33Z", "ms": 963375572796.1793 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-07-11", "window": { "start": { "local": "2000-07-11T05:26:14-05:00", "utc": "2000-07-11T10:26:14Z", "ms": 963311174109.4121 }, "end": { "local": "2000-07-11T05:26:14-05:00", "utc": "2000-07-11T10:26:14Z", "ms": 963311174109.4121 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-07-12", "window": { "start": { "local": "2000-07-12T05:27:00-05:00", "utc": "2000-07-12T10:27:00Z", "ms": 963397619558.4744 }, "end": { "local": "2000-07-12T05:27:00-05:00", "utc": "2000-07-12T10:27:00Z", "ms": 963397619558.4744 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:37 on Mon 10 Jul to 23:20 on Tue 11 Jul.", "fact": "2000-07-11T02:36:52Z → 2000-07-12T04:19:33Z" }, { "step": "kaala", "text": "Sunrise is at 05:26 on the 11th and 05:27 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 11th and is not 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 22047 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Chicago, 2000: Tuesday 11 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": "2000-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-11", "confidence": "determinate" } ], "quote": "In Chicago, Hariśayanī Ekādaśī 2000 falls on Tuesday 11 July. Ekādaśī runs from 21:37 on Mon 10 Jul to 23:20 on Tue 11 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-07-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13746, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-07-13T01:26:37-05:00", "utc": "2000-07-13T06:26:37Z", "ms": 963469596762.5121 }, "end": { "local": "2000-07-14T03:50:05-05:00", "utc": "2000-07-14T08:50:05Z", "ms": 963564604942.0133 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-13T01:26:37-05:00", "utc": "2000-07-13T06:26:37Z", "ms": 963469596762.5121 }, "end": { "local": "2000-07-14T03:50:05-05:00", "utc": "2000-07-14T08:50:05Z", "ms": 963564604942.0133 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-07-12", "window": { "start": { "local": "2000-07-12T20:25:10-05:00", "utc": "2000-07-13T01:25:10Z", "ms": 963451509578.6069 }, "end": { "local": "2000-07-12T21:37:30-05:00", "utc": "2000-07-13T02:37:30Z", "ms": 963455850448.2074 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "2000-07-13", "window": { "start": { "local": "2000-07-13T20:24:36-05:00", "utc": "2000-07-14T01:24:36Z", "ms": 963537875880.8383 }, "end": { "local": "2000-07-13T21:37:08-05:00", "utc": "2000-07-14T02:37:08Z", "ms": 963542227589.2437 } }, "covered_min": 73, "window_min": 73, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:27 on Thu 13 Jul to 03:50 on Fri 14 Jul.", "fact": "2000-07-13T06:26:37Z → 2000-07-14T08:50:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:25–21:38 on the 12th, 20:25–21:37 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 0 of 72 minutes on the 12th and 73 of 73 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 13746 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Thursday 13 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": "2000-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-13", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Thursday 13 July. Trayodaśī runs from 01:27 on Thu 13 Jul to 03:50 on Fri 14 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-07-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13034, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-07-15", "window": { "start": { "local": "2000-07-15T12:32:22-05:00", "utc": "2000-07-15T17:32:22Z", "ms": 963682342369.5676 }, "end": { "local": "2000-07-15T13:20:22-05:00", "utc": "2000-07-15T18:20:22Z", "ms": 963685222369.5676 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-07-16", "window": { "start": { "local": "2000-07-16T12:32:27-05:00", "utc": "2000-07-16T17:32:27Z", "ms": 963768747306.9626 }, "end": { "local": "2000-07-16T13:20:27-05:00", "utc": "2000-07-16T18:20:27Z", "ms": 963771627306.9626 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul.", "fact": "2000-07-15T11:22:05Z → 2000-07-16T13:55:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 15th, 12:32–13:20 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 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13034 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Chicago, 2000: Saturday 15 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": "2000-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-15", "confidence": "determinate" } ], "quote": "In Chicago, Guru Pūrṇimā 2000 falls on Saturday 15 July. Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30540, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 } }, "kaala": "sayahna", "days": [ { "local_date": "2000-07-15", "window": { "start": { "local": "2000-07-15T17:24:34-05:00", "utc": "2000-07-15T22:24:34Z", "ms": 963699874413.1841 }, "end": { "local": "2000-07-15T20:23:22-05:00", "utc": "2000-07-16T01:23:22Z", "ms": 963710602442.2617 } }, "covered_min": 179, "window_min": 179, "qualifies": true }, { "local_date": "2000-07-16", "window": { "start": { "local": "2000-07-16T17:24:13-05:00", "utc": "2000-07-16T22:24:13Z", "ms": 963786252569.8733 }, "end": { "local": "2000-07-16T20:22:43-05:00", "utc": "2000-07-17T01:22:43Z", "ms": 963796962745.147 } }, "covered_min": 0, "window_min": 179, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul.", "fact": "2000-07-15T11:22:05Z → 2000-07-16T13:55:13Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:25–20:23 on the 15th, 17:24–20:23 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 179 of 179 minutes on the 15th and 0 of 179 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 30540 s" }, { "step": "ruling", "text": "Kokilā Vrata, Chicago, 2000: Saturday 15 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": "2000-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-15", "confidence": "determinate" } ], "quote": "In Chicago, Kokilā Vrata 2000 falls on Saturday 15 July. Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31522, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-07-14", "window": { "start": { "local": "2000-07-14T20:24:00-05:00", "utc": "2000-07-15T01:24:00Z", "ms": 963624240161.6323 }, "end": { "local": "2000-07-14T21:36:43-05:00", "utc": "2000-07-15T02:36:43Z", "ms": 963628603112.9978 } }, "covered_min": 0, "window_min": 73, "qualifies": false }, { "local_date": "2000-07-15", "window": { "start": { "local": "2000-07-15T20:23:22-05:00", "utc": "2000-07-16T01:23:22Z", "ms": 963710602442.2617 }, "end": { "local": "2000-07-15T21:36:17-05:00", "utc": "2000-07-16T02:36:17Z", "ms": 963714977032.464 } }, "covered_min": 73, "window_min": 73, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul.", "fact": "2000-07-15T11:22:05Z → 2000-07-16T13:55:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:24–21:37 on the 14th, 20:23–21:36 on the 15th.", "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 73 minutes on the 14th and 73 of 73 on the 15th.", "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 31522 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Chicago, 2000: Saturday 15 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": "2000-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-15", "confidence": "determinate" } ], "quote": "In Chicago, Śiva Śayanotsava 2000 falls on Saturday 15 July. Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1591, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2000-07-15T06:22:05-05:00", "utc": "2000-07-15T11:22:05Z", "ms": 963660125302.9535 }, "end": { "local": "2000-07-16T08:55:13-05:00", "utc": "2000-07-16T13:55:13Z", "ms": 963755712961.9635 } }, "kaala": "udaya-3", "days": [ { "local_date": "2000-07-15", "window": { "start": { "local": "2000-07-15T05:29:22-05:00", "utc": "2000-07-15T10:29:22Z", "ms": 963656962296.8734 }, "end": { "local": "2000-07-15T08:28:10-05:00", "utc": "2000-07-15T13:28:10Z", "ms": 963667690325.951 } }, "covered_min": 126, "window_min": 179, "qualifies": false }, { "local_date": "2000-07-16", "window": { "start": { "local": "2000-07-16T05:30:12-05:00", "utc": "2000-07-16T10:30:12Z", "ms": 963743411868.7784 }, "end": { "local": "2000-07-16T08:28:42-05:00", "utc": "2000-07-16T13:28:42Z", "ms": 963754122044.0521 } }, "covered_min": 179, "window_min": 179, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul.", "fact": "2000-07-15T11:22:05Z → 2000-07-16T13:55:13Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:29–08:28 on the 15th, 05:30–08:29 on the 16th.", "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 126 of 179 minutes on the 15th and 179 of 179 on the 16th.", "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 1591 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Chicago, 2000: Sunday 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": "2000-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-16", "confidence": "determinate" } ], "quote": "In Chicago, Vyāsa Pūjā 2000 falls on Sunday 16 July. Pūrṇimā runs from 06:22 on Sat 15 Jul to 08:55 on Sun 16 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29781, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2000-07-17T11:22:33-05:00", "utc": "2000-07-17T16:22:33Z", "ms": 963850953336.1254 }, "end": { "local": "2000-07-18T13:37:35-05:00", "utc": "2000-07-18T18:37:35Z", "ms": 963945455034.8872 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-07-17T11:22:33-05:00", "utc": "2000-07-17T16:22:33Z", "ms": 963850953336.1254 }, "end": { "local": "2000-07-18T13:37:35-05:00", "utc": "2000-07-18T18:37:35Z", "ms": 963945455034.8872 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-07-17", "window": { "start": { "local": "2000-07-17T21:19:28-05:00", "utc": "2000-07-18T02:19:28Z", "ms": 963886767956.6262 }, "end": { "local": "2000-07-17T21:19:28-05:00", "utc": "2000-07-18T02:19:28Z", "ms": 963886767956.6262 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-07-18", "window": { "start": { "local": "2000-07-18T21:53:56-05:00", "utc": "2000-07-19T02:53:56Z", "ms": 963975235721.5975 }, "end": { "local": "2000-07-18T21:53:56-05:00", "utc": "2000-07-19T02:53:56Z", "ms": 963975235721.5975 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:23 on Mon 17 Jul to 13:38 on Tue 18 Jul.", "fact": "2000-07-17T16:22:33Z → 2000-07-18T18:37:35Z" }, { "step": "kaala", "text": "Moonrise is at 21:19 on the 17th and 21:54 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 17th and is not 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 29781 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Chicago, 2000: Monday 17 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": "2000-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-17", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata (Āṣāḍha) 2000 falls on Monday 17 July. Dvitīyā runs from 11:23 on Mon 17 Jul to 13:38 on Tue 18 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-07-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20857, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-07-19T15:34:02-05:00", "utc": "2000-07-19T20:34:02Z", "ms": 964038841864.6241 }, "end": { "local": "2000-07-20T17:05:53-05:00", "utc": "2000-07-20T22:05:53Z", "ms": 964130752504.9661 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-07-19T15:34:02-05:00", "utc": "2000-07-19T20:34:02Z", "ms": 964038841864.6241 }, "end": { "local": "2000-07-20T17:05:53-05:00", "utc": "2000-07-20T22:05:53Z", "ms": 964130752504.9661 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-07-19", "window": { "start": { "local": "2000-07-19T22:24:55-05:00", "utc": "2000-07-20T03:24:55Z", "ms": 964063495076.6173 }, "end": { "local": "2000-07-19T22:24:55-05:00", "utc": "2000-07-20T03:24:55Z", "ms": 964063495076.6173 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-07-20", "window": { "start": { "local": "2000-07-20T22:53:30-05:00", "utc": "2000-07-21T03:53:30Z", "ms": 964151609604.7922 }, "end": { "local": "2000-07-20T22:53:30-05:00", "utc": "2000-07-21T03:53:30Z", "ms": 964151609604.7922 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:34 on Wed 19 Jul to 17:06 on Thu 20 Jul.", "fact": "2000-07-19T20:34:02Z → 2000-07-20T22:05:53Z" }, { "step": "kaala", "text": "Moonrise is at 22:25 on the 19th and 22:53 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 19th and is not 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 20857 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Wednesday 19 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": "2000-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-19", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Wednesday 19 July. Caturthī runs from 15:34 on Wed 19 Jul to 17:06 on Thu 20 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-07-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-07-27", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19913, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-07-26T13:52:28-05:00", "utc": "2000-07-26T18:52:28Z", "ms": 964637548007.1771 }, "end": { "local": "2000-07-27T11:12:03-05:00", "utc": "2000-07-27T16:12:03Z", "ms": 964714323494.0367 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-07-26T13:52:28-05:00", "utc": "2000-07-26T18:52:28Z", "ms": 964637548007.1771 }, "end": { "local": "2000-07-27T11:12:03-05:00", "utc": "2000-07-27T16:12:03Z", "ms": 964714323494.0367 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-07-26", "window": { "start": { "local": "2000-07-26T05:39:12-05:00", "utc": "2000-07-26T10:39:12Z", "ms": 964607952321.3523 }, "end": { "local": "2000-07-26T05:39:12-05:00", "utc": "2000-07-26T10:39:12Z", "ms": 964607952321.3523 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-07-27", "window": { "start": { "local": "2000-07-27T05:40:10-05:00", "utc": "2000-07-27T10:40:10Z", "ms": 964694410013.0758 }, "end": { "local": "2000-07-27T05:40:10-05:00", "utc": "2000-07-27T10:40:10Z", "ms": 964694410013.0758 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:52 on Wed 26 Jul to 11:12 on Thu 27 Jul.", "fact": "2000-07-26T18:52:28Z → 2000-07-27T16:12:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:39 on the 26th and 05:40 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 19913 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Chicago, 2000: Thursday 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": "2000-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-27", "confidence": "determinate" } ], "quote": "In Chicago, Kāmikā Ekādaśī 2000 falls on Thursday 27 July. Ekādaśī runs from 13:52 on Wed 26 Jul to 11:12 on Thu 27 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-07-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-07-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25869, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-07-28T08:05:15-05:00", "utc": "2000-07-28T13:05:15Z", "ms": 964789515274.9904 }, "end": { "local": "2000-07-29T04:39:28-05:00", "utc": "2000-07-29T09:39:28Z", "ms": 964863568089.307 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-07-28T08:05:15-05:00", "utc": "2000-07-28T13:05:15Z", "ms": 964789515274.9904 }, "end": { "local": "2000-07-29T04:39:28-05:00", "utc": "2000-07-29T09:39:28Z", "ms": 964863568089.307 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-07-27", "window": { "start": { "local": "2000-07-27T20:13:23-05:00", "utc": "2000-07-28T01:13:23Z", "ms": 964746802762.3518 }, "end": { "local": "2000-07-27T21:29:05-05:00", "utc": "2000-07-28T02:29:05Z", "ms": 964751344822.9526 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "2000-07-28", "window": { "start": { "local": "2000-07-28T20:12:21-05:00", "utc": "2000-07-29T01:12:21Z", "ms": 964833141345.3486 }, "end": { "local": "2000-07-28T21:28:19-05:00", "utc": "2000-07-29T02:28:19Z", "ms": 964837699418.3835 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:05 on Fri 28 Jul to 04:39 on Sat 29 Jul.", "fact": "2000-07-28T13:05:15Z → 2000-07-29T09:39:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:13–21:29 on the 27th, 20:12–21:28 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 76 minutes on the 27th and 76 of 76 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 25869 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Friday 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": "2000-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-28", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Friday 28 July. Trayodaśī runs from 08:05 on Fri 28 Jul to 04:39 on Sat 29 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-07-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-07-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-07-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1087, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-07-29T04:39:28-05:00", "utc": "2000-07-29T09:39:28Z", "ms": 964863568089.307 }, "end": { "local": "2000-07-30T01:03:05-05:00", "utc": "2000-07-30T06:03:05Z", "ms": 964936984920.7494 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-07-29T04:39:28-05:00", "utc": "2000-07-29T09:39:28Z", "ms": 964863568089.307 }, "end": { "local": "2000-07-30T01:03:05-05:00", "utc": "2000-07-30T06:03:05Z", "ms": 964936984920.7494 } }, "kaala": "nishita", "days": [ { "local_date": "2000-07-28", "window": { "start": { "local": "2000-07-29T00:33:14-05:00", "utc": "2000-07-29T05:33:14Z", "ms": 964848794119.2294 }, "end": { "local": "2000-07-29T01:21:14-05:00", "utc": "2000-07-29T06:21:14Z", "ms": 964851674119.2294 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-07-29", "window": { "start": { "local": "2000-07-30T00:33:12-05:00", "utc": "2000-07-30T05:33:12Z", "ms": 964935192148.4624 }, "end": { "local": "2000-07-30T01:21:12-05:00", "utc": "2000-07-30T06:21:12Z", "ms": 964938072148.4624 } }, "covered_min": 30, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:39 on Sat 29 Jul to 01:03 on Sun 30 Jul.", "fact": "2000-07-29T09:39:28Z → 2000-07-30T06:03:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:33–01:21 on the 28th, 00:33–01:21 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 30 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 1087 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Saturday 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": "2000-07-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-07-29", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Saturday 29 July. Caturdaśī runs from 04:39 on Sat 29 Jul to 01:03 on Sun 30 Jul and covers 30 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-07-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2165, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-08-01T14:42:26-05:00", "utc": "2000-08-01T19:42:26Z", "ms": 965158946032.0033 }, "end": { "local": "2000-08-02T11:56:23-05:00", "utc": "2000-08-02T16:56:23Z", "ms": 965235383311.1238 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-01T14:42:26-05:00", "utc": "2000-08-01T19:42:26Z", "ms": 965158946032.0033 }, "end": { "local": "2000-08-02T11:56:23-05:00", "utc": "2000-08-02T16:56:23Z", "ms": 965235383311.1238 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-01", "window": { "start": { "local": "2000-08-01T12:32:32-05:00", "utc": "2000-08-01T17:32:32Z", "ms": 965151152480.8745 }, "end": { "local": "2000-08-01T13:20:32-05:00", "utc": "2000-08-01T18:20:32Z", "ms": 965154032480.8745 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-02", "window": { "start": { "local": "2000-08-02T12:32:28-05:00", "utc": "2000-08-02T17:32:28Z", "ms": 965237547906.0881 }, "end": { "local": "2000-08-02T13:20:28-05:00", "utc": "2000-08-02T18:20:28Z", "ms": 965240427906.0881 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:42 on Tue 1 Aug to 11:56 on Wed 2 Aug.", "fact": "2000-08-01T19:42:26Z → 2000-08-02T16:56:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 1st, 12:32–13:20 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 2165 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Chicago, 2000: Wednesday 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": "2000-08-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-02", "confidence": "determinate" } ], "quote": "In Chicago, Madhusravā Tṛtīyā (Hariyali Teej) 2000 falls on Wednesday 2 August. Tṛtīyā runs from 14:42 on Tue 1 Aug to 11:56 on Wed 2 Aug, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-08-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2165, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-08-02T11:56:23-05:00", "utc": "2000-08-02T16:56:23Z", "ms": 965235383311.1238 }, "end": { "local": "2000-08-03T09:45:23-05:00", "utc": "2000-08-03T14:45:23Z", "ms": 965313923281.0796 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-02T11:56:23-05:00", "utc": "2000-08-02T16:56:23Z", "ms": 965235383311.1238 }, "end": { "local": "2000-08-03T09:45:23-05:00", "utc": "2000-08-03T14:45:23Z", "ms": 965313923281.0796 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-02", "window": { "start": { "local": "2000-08-02T12:32:28-05:00", "utc": "2000-08-02T17:32:28Z", "ms": 965237547906.0881 }, "end": { "local": "2000-08-02T13:20:28-05:00", "utc": "2000-08-02T18:20:28Z", "ms": 965240427906.0881 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-03", "window": { "start": { "local": "2000-08-03T12:32:23-05:00", "utc": "2000-08-03T17:32:23Z", "ms": 965323942723.2319 }, "end": { "local": "2000-08-03T13:20:23-05:00", "utc": "2000-08-03T18:20:23Z", "ms": 965326822723.2319 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:56 on Wed 2 Aug to 09:45 on Thu 3 Aug.", "fact": "2000-08-02T16:56:23Z → 2000-08-03T14:45:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 2nd, 12:32–13:20 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2165 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Wednesday 2 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": "2000-08-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-02", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Wednesday 2 August. Caturthī runs from 11:56 on Wed 2 Aug to 09:45 on Thu 3 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-08-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10019, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-08-03T09:45:23-05:00", "utc": "2000-08-03T14:45:23Z", "ms": 965313923281.0796 }, "end": { "local": "2000-08-04T08:16:26-05:00", "utc": "2000-08-04T13:16:26Z", "ms": 965394985583.5063 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-03T09:45:23-05:00", "utc": "2000-08-03T14:45:23Z", "ms": 965313923281.0796 }, "end": { "local": "2000-08-04T08:16:26-05:00", "utc": "2000-08-04T13:16:26Z", "ms": 965394985583.5063 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-03", "window": { "start": { "local": "2000-08-03T12:32:23-05:00", "utc": "2000-08-03T17:32:23Z", "ms": 965323942723.2319 }, "end": { "local": "2000-08-03T13:20:23-05:00", "utc": "2000-08-03T18:20:23Z", "ms": 965326822723.2319 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-04", "window": { "start": { "local": "2000-08-04T12:32:17-05:00", "utc": "2000-08-04T17:32:17Z", "ms": 965410336931.5894 }, "end": { "local": "2000-08-04T13:20:17-05:00", "utc": "2000-08-04T18:20:17Z", "ms": 965413216931.5894 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 09:45 on Thu 3 Aug to 08:16 on Fri 4 Aug.", "fact": "2000-08-03T14:45:23Z → 2000-08-04T13:16:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 3rd, 12:32–13:20 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 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10019 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Chicago, 2000: Thursday 3 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": "2000-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-03", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī 2000 falls on Thursday 3 August. Pañcamī runs from 09:45 on Thu 3 Aug to 08:16 on Fri 4 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-08-10", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22813, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-08-09T12:13:26-05:00", "utc": "2000-08-09T17:13:26Z", "ms": 965841205808.1057 }, "end": { "local": "2000-08-10T14:39:46-05:00", "utc": "2000-08-10T19:39:46Z", "ms": 965936386134.3588 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-09T12:13:26-05:00", "utc": "2000-08-09T17:13:26Z", "ms": 965841205808.1057 }, "end": { "local": "2000-08-10T14:39:46-05:00", "utc": "2000-08-10T19:39:46Z", "ms": 965936386134.3588 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-08-09", "window": { "start": { "local": "2000-08-09T05:53:13-05:00", "utc": "2000-08-09T10:53:13Z", "ms": 965818393162.0918 }, "end": { "local": "2000-08-09T05:53:13-05:00", "utc": "2000-08-09T10:53:13Z", "ms": 965818393162.0918 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-08-10", "window": { "start": { "local": "2000-08-10T05:54:15-05:00", "utc": "2000-08-10T10:54:15Z", "ms": 965904854864.569 }, "end": { "local": "2000-08-10T05:54:15-05:00", "utc": "2000-08-10T10:54:15Z", "ms": 965904854864.569 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:13 on Wed 9 Aug to 14:40 on Thu 10 Aug.", "fact": "2000-08-09T17:13:26Z → 2000-08-10T19:39:46Z" }, { "step": "kaala", "text": "Sunrise is at 05:53 on the 9th and 05:54 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22813 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2000: Thursday 10 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": "2000-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-10", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2000 falls on Thursday 10 August. Ekādaśī runs from 12:13 on Wed 9 Aug to 14:40 on Thu 10 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-08-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4817, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-08-10T14:39:46-05:00", "utc": "2000-08-10T19:39:46Z", "ms": 965936386134.3588 }, "end": { "local": "2000-08-11T17:14:49-05:00", "utc": "2000-08-11T22:14:49Z", "ms": 966032089427.8915 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-10T14:39:46-05:00", "utc": "2000-08-10T19:39:46Z", "ms": 965936386134.3588 }, "end": { "local": "2000-08-11T17:14:49-05:00", "utc": "2000-08-11T22:14:49Z", "ms": 966032089427.8915 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-10", "window": { "start": { "local": "2000-08-10T12:31:30-05:00", "utc": "2000-08-10T17:31:30Z", "ms": 965928689573.19 }, "end": { "local": "2000-08-10T13:19:30-05:00", "utc": "2000-08-10T18:19:30Z", "ms": 965931569573.19 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-11", "window": { "start": { "local": "2000-08-11T12:31:20-05:00", "utc": "2000-08-11T17:31:20Z", "ms": 966015079636.3281 }, "end": { "local": "2000-08-11T13:19:20-05:00", "utc": "2000-08-11T18:19:20Z", "ms": 966017959636.3281 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:40 on Thu 10 Aug to 17:15 on Fri 11 Aug.", "fact": "2000-08-10T19:39:46Z → 2000-08-11T22:14:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 10th, 12:31–13:19 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4817 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Chicago, 2000: Friday 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": "2000-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-11", "confidence": "determinate" } ], "quote": "In Chicago, Dāmodara Dvādaśī 2000 falls on Friday 11 August. Dvādaśī runs from 14:40 on Thu 10 Aug to 17:15 on Fri 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-08-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 383, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-08-11T17:14:49-05:00", "utc": "2000-08-11T22:14:49Z", "ms": 966032089427.8915 }, "end": { "local": "2000-08-12T19:47:37-05:00", "utc": "2000-08-13T00:47:37Z", "ms": 966127657222.4646 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-11T17:14:49-05:00", "utc": "2000-08-11T22:14:49Z", "ms": 966032089427.8915 }, "end": { "local": "2000-08-12T19:47:37-05:00", "utc": "2000-08-13T00:47:37Z", "ms": 966127657222.4646 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-08-11", "window": { "start": { "local": "2000-08-11T19:55:23-05:00", "utc": "2000-08-12T00:55:23Z", "ms": 966041722612.4397 }, "end": { "local": "2000-08-11T21:15:30-05:00", "utc": "2000-08-12T02:15:30Z", "ms": 966046530068.5787 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "2000-08-12", "window": { "start": { "local": "2000-08-12T19:54:00-05:00", "utc": "2000-08-13T00:54:00Z", "ms": 966128039743.5613 }, "end": { "local": "2000-08-12T21:14:27-05:00", "utc": "2000-08-13T02:14:27Z", "ms": 966132866507.1602 } }, "covered_min": 0, "window_min": 80, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:15 on Fri 11 Aug to 19:48 on Sat 12 Aug.", "fact": "2000-08-11T22:14:49Z → 2000-08-13T00:47:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:55–21:16 on the 11th, 19:54–21:14 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 80 of 80 minutes on the 11th and 0 of 80 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 383 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Friday 11 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": "2000-08-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-11", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Friday 11 August. Trayodaśī runs from 17:15 on Fri 11 Aug to 19:48 on Sat 12 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18905, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-08-13T22:09:07-05:00", "utc": "2000-08-14T03:09:07Z", "ms": 966222547149.2439 }, "end": { "local": "2000-08-15T00:12:38-05:00", "utc": "2000-08-15T05:12:38Z", "ms": 966316358363.6775 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2000-08-14T11:13:27-05:00", "utc": "2000-08-14T16:13:27Z", "ms": 966269607161.7893 }, "end": { "local": "2000-08-15T00:12:38-05:00", "utc": "2000-08-15T05:12:38Z", "ms": 966316358363.6775 } }, "kaala": "day", "days": [ { "local_date": "2000-08-13", "window": { "start": { "local": "2000-08-13T05:57:20-05:00", "utc": "2000-08-13T10:57:20Z", "ms": 966164240470.5527 }, "end": { "local": "2000-08-14T05:58:22-05:00", "utc": "2000-08-14T10:58:22Z", "ms": 966250702459.3206 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2000-08-14", "window": { "start": { "local": "2000-08-14T05:58:22-05:00", "utc": "2000-08-14T10:58:22Z", "ms": 966250702459.3206 }, "end": { "local": "2000-08-15T05:59:24-05:00", "utc": "2000-08-15T10:59:24Z", "ms": 966337164489.3341 } }, "covered_min": 779, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:09 on Sun 13 Aug to 00:13 on Tue 15 Aug. Its second half begins at 11:13 on Mon 14 Aug.", "fact": "2000-08-14T03:09:07Z → 2000-08-15T05:12:38Z · second half from 2000-08-14T16:13:27Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:57 on the 13th, and from 05:58 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 0 of 1441 minutes on the 13th and 779 of 1441 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18905 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Chicago, 2000: Monday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-14", "confidence": "determinate" } ], "quote": "In Chicago, Rakṣā Bandhana (Rakhi) 2000 falls on Monday 14 August. The second half of Pūrṇimā runs from 11:13 on Mon 14 Aug to 00:13 on Tue 15 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31809, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-08-13T22:09:07-05:00", "utc": "2000-08-14T03:09:07Z", "ms": 966222547149.2439 }, "end": { "local": "2000-08-15T00:12:38-05:00", "utc": "2000-08-15T05:12:38Z", "ms": 966316358363.6775 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2000-08-13T22:09:07-05:00", "utc": "2000-08-14T03:09:07Z", "ms": 966222547149.2439 }, "end": { "local": "2000-08-15T00:12:38-05:00", "utc": "2000-08-15T05:12:38Z", "ms": 966316358363.6775 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-13", "window": { "start": { "local": "2000-08-13T12:30:58-05:00", "utc": "2000-08-13T17:30:58Z", "ms": 966187858090.5027 }, "end": { "local": "2000-08-13T13:18:58-05:00", "utc": "2000-08-13T18:18:58Z", "ms": 966190738090.5027 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-14", "window": { "start": { "local": "2000-08-14T12:30:47-05:00", "utc": "2000-08-14T17:30:47Z", "ms": 966274246503.8395 }, "end": { "local": "2000-08-14T13:18:47-05:00", "utc": "2000-08-14T18:18:47Z", "ms": 966277126503.8395 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:09 on Sun 13 Aug to 00:13 on Tue 15 Aug.", "fact": "2000-08-14T03:09:07Z → 2000-08-15T05:12:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 13th, 12:31–13:19 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31809 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Chicago, 2000: Monday 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": "2000-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-14", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Tarpaṇa 2000 falls on Monday 14 August. Pūrṇimā runs from 22:09 on Sun 13 Aug to 00:13 on Tue 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19562, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2000-08-16T01:53:43-05:00", "utc": "2000-08-16T06:53:43Z", "ms": 966408823477.9504 }, "end": { "local": "2000-08-17T03:09:40-05:00", "utc": "2000-08-17T08:09:40Z", "ms": 966499779601.7139 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-16T01:53:43-05:00", "utc": "2000-08-16T06:53:43Z", "ms": 966408823477.9504 }, "end": { "local": "2000-08-17T03:09:40-05:00", "utc": "2000-08-17T08:09:40Z", "ms": 966499779601.7139 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-08-15", "window": { "start": { "local": "2000-08-15T20:27:42-05:00", "utc": "2000-08-16T01:27:42Z", "ms": 966389261618.3491 }, "end": { "local": "2000-08-15T20:27:42-05:00", "utc": "2000-08-16T01:27:42Z", "ms": 966389261618.3491 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-08-16", "window": { "start": { "local": "2000-08-16T20:57:06-05:00", "utc": "2000-08-17T01:57:06Z", "ms": 966477425596.9259 }, "end": { "local": "2000-08-16T20:57:06-05:00", "utc": "2000-08-17T01:57:06Z", "ms": 966477425596.9259 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 01:54 on Wed 16 Aug to 03:10 on Thu 17 Aug.", "fact": "2000-08-16T06:53:43Z → 2000-08-17T08:09:40Z" }, { "step": "kaala", "text": "Moonrise is at 20:28 on the 15th and 20:57 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19562 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Chicago, 2000: Wednesday 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": "2000-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-16", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata 2000 falls on Wednesday 16 August. Dvitīyā runs from 01:54 on Wed 16 Aug to 03:10 on Thu 17 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30662, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-08-17T03:09:40-05:00", "utc": "2000-08-17T08:09:40Z", "ms": 966499779601.7139 }, "end": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-17T03:09:40-05:00", "utc": "2000-08-17T08:09:40Z", "ms": 966499779601.7139 }, "end": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-17", "window": { "start": { "local": "2000-08-17T12:30:09-05:00", "utc": "2000-08-17T17:30:09Z", "ms": 966533408638.8563 }, "end": { "local": "2000-08-17T13:18:09-05:00", "utc": "2000-08-17T18:18:09Z", "ms": 966536288638.8563 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-18", "window": { "start": { "local": "2000-08-18T12:29:55-05:00", "utc": "2000-08-18T17:29:55Z", "ms": 966619795027.6156 }, "end": { "local": "2000-08-18T13:17:55-05:00", "utc": "2000-08-18T18:17:55Z", "ms": 966622675027.6156 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:10 on Thu 17 Aug to 03:59 on Fri 18 Aug.", "fact": "2000-08-17T08:09:40Z → 2000-08-18T08:58:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 17th, 12:30–13:18 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 30662 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Chicago, 2000: Thursday 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": "2000-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-17", "confidence": "determinate" } ], "quote": "In Chicago, Kajjalī Tṛtīyā (Kajari Teej) 2000 falls on Thursday 17 August. Tṛtīyā runs from 03:10 on Thu 17 Aug to 03:59 on Fri 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29524, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 }, "end": { "local": "2000-08-19T04:20:26-05:00", "utc": "2000-08-19T09:20:26Z", "ms": 966676825758.2616 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 }, "end": { "local": "2000-08-19T04:20:26-05:00", "utc": "2000-08-19T09:20:26Z", "ms": 966676825758.2616 } }, "kaala": "sayahna", "days": [ { "local_date": "2000-08-17", "window": { "start": { "local": "2000-08-17T17:01:45-05:00", "utc": "2000-08-17T22:01:45Z", "ms": 966549704638.7422 }, "end": { "local": "2000-08-17T19:46:49-05:00", "utc": "2000-08-18T00:46:49Z", "ms": 966559608638.666 } }, "covered_min": 0, "window_min": 165, "qualifies": false }, { "local_date": "2000-08-18", "window": { "start": { "local": "2000-08-18T17:00:46-05:00", "utc": "2000-08-18T22:00:46Z", "ms": 966636045597.0692 }, "end": { "local": "2000-08-18T19:45:19-05:00", "utc": "2000-08-19T00:45:19Z", "ms": 966645919310.0383 } }, "covered_min": 165, "window_min": 165, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:59 on Fri 18 Aug to 04:20 on Sat 19 Aug.", "fact": "2000-08-18T08:58:53Z → 2000-08-19T09:20:26Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:02–19:47 on the 17th, 17:01–19:45 on the 18th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 165 minutes on the 17th and 165 of 165 on the 18th.", "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 29524 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Chicago, 2000: Friday 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": "2000-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-18", "confidence": "determinate" } ], "quote": "In Chicago, Bahulā Caturthī 2000 falls on Friday 18 August. Caturthī runs from 03:59 on Fri 18 Aug to 04:20 on Sat 19 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-08-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23319, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 }, "end": { "local": "2000-08-19T04:20:26-05:00", "utc": "2000-08-19T09:20:26Z", "ms": 966676825758.2616 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-18T03:58:53-05:00", "utc": "2000-08-18T08:58:53Z", "ms": 966589132592.8215 }, "end": { "local": "2000-08-19T04:20:26-05:00", "utc": "2000-08-19T09:20:26Z", "ms": 966676825758.2616 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-08-17", "window": { "start": { "local": "2000-08-17T21:24:45-05:00", "utc": "2000-08-18T02:24:45Z", "ms": 966565485435.9984 }, "end": { "local": "2000-08-17T21:24:45-05:00", "utc": "2000-08-18T02:24:45Z", "ms": 966565485435.9984 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-08-18", "window": { "start": { "local": "2000-08-18T21:51:47-05:00", "utc": "2000-08-19T02:51:47Z", "ms": 966653507159.6472 }, "end": { "local": "2000-08-18T21:51:47-05:00", "utc": "2000-08-19T02:51:47Z", "ms": 966653507159.6472 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:59 on Fri 18 Aug to 04:20 on Sat 19 Aug.", "fact": "2000-08-18T08:58:53Z → 2000-08-19T09:20:26Z" }, { "step": "kaala", "text": "Moonrise is at 21:25 on the 17th and 21:52 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 23319 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Friday 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": "2000-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-18", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Friday 18 August. Caturthī runs from 03:59 on Fri 18 Aug to 04:20 on Sat 19 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-08-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29746, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-08-20T04:13:40-05:00", "utc": "2000-08-20T09:13:40Z", "ms": 966762819919.713 }, "end": { "local": "2000-08-21T03:38:07-05:00", "utc": "2000-08-21T08:38:07Z", "ms": 966847087471.9413 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-20T04:13:40-05:00", "utc": "2000-08-20T09:13:40Z", "ms": 966762819919.713 }, "end": { "local": "2000-08-21T03:38:07-05:00", "utc": "2000-08-21T08:38:07Z", "ms": 966847087471.9413 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-20", "window": { "start": { "local": "2000-08-20T12:29:26-05:00", "utc": "2000-08-20T17:29:26Z", "ms": 966792566407.1859 }, "end": { "local": "2000-08-20T13:17:26-05:00", "utc": "2000-08-20T18:17:26Z", "ms": 966795446407.1859 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-21", "window": { "start": { "local": "2000-08-21T12:29:11-05:00", "utc": "2000-08-21T17:29:11Z", "ms": 966878951427.5343 }, "end": { "local": "2000-08-21T13:17:11-05:00", "utc": "2000-08-21T18:17:11Z", "ms": 966881831427.5343 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 04:14 on Sun 20 Aug to 03:38 on Mon 21 Aug.", "fact": "2000-08-20T09:13:40Z → 2000-08-21T08:38:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 20th, 12:29–13:17 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 29746 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Chicago, 2000: Sunday 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": "2000-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-20", "confidence": "determinate" } ], "quote": "In Chicago, Hala Ṣaṣṭhī 2000 falls on Sunday 20 August. Ṣaṣṭhī runs from 04:14 on Sun 20 Aug to 03:38 on Mon 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31864, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-08-21T03:38:07-05:00", "utc": "2000-08-21T08:38:07Z", "ms": 966847087471.9413 }, "end": { "local": "2000-08-22T02:33:39-05:00", "utc": "2000-08-22T07:33:39Z", "ms": 966929619296.2681 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-21T03:38:07-05:00", "utc": "2000-08-21T08:38:07Z", "ms": 966847087471.9413 }, "end": { "local": "2000-08-22T02:33:39-05:00", "utc": "2000-08-22T07:33:39Z", "ms": 966929619296.2681 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-21", "window": { "start": { "local": "2000-08-21T12:29:11-05:00", "utc": "2000-08-21T17:29:11Z", "ms": 966878951427.5343 }, "end": { "local": "2000-08-21T13:17:11-05:00", "utc": "2000-08-21T18:17:11Z", "ms": 966881831427.5343 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-22", "window": { "start": { "local": "2000-08-22T12:28:56-05:00", "utc": "2000-08-22T17:28:56Z", "ms": 966965336021.153 }, "end": { "local": "2000-08-22T13:16:56-05:00", "utc": "2000-08-22T18:16:56Z", "ms": 966968216021.153 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:38 on Mon 21 Aug to 02:34 on Tue 22 Aug.", "fact": "2000-08-21T08:38:07Z → 2000-08-22T07:33:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 21st, 12:29–13:17 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31864 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Chicago, 2000: Monday 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": "2000-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-21", "confidence": "determinate" } ], "quote": "In Chicago, Śītalā Saptamī 2000 falls on Monday 21 August. Saptamī runs from 03:38 on Mon 21 Aug to 02:34 on Tue 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1007, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-08-22T02:33:39-05:00", "utc": "2000-08-22T07:33:39Z", "ms": 966929619296.2681 }, "end": { "local": "2000-08-23T01:00:40-05:00", "utc": "2000-08-23T06:00:40Z", "ms": 967010440468.9113 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-22T02:33:39-05:00", "utc": "2000-08-22T07:33:39Z", "ms": 966929619296.2681 }, "end": { "local": "2000-08-23T01:00:40-05:00", "utc": "2000-08-23T06:00:40Z", "ms": 967010440468.9113 } }, "kaala": "nishita", "days": [ { "local_date": "2000-08-21", "window": { "start": { "local": "2000-08-22T00:29:42-05:00", "utc": "2000-08-22T05:29:42Z", "ms": 966922182496.0864 }, "end": { "local": "2000-08-22T01:17:42-05:00", "utc": "2000-08-22T06:17:42Z", "ms": 966925062496.0864 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-22", "window": { "start": { "local": "2000-08-23T00:29:27-05:00", "utc": "2000-08-23T05:29:27Z", "ms": 967008567088.8611 }, "end": { "local": "2000-08-23T01:17:27-05:00", "utc": "2000-08-23T06:17:27Z", "ms": 967011447088.8611 } }, "covered_min": 31, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:34 on Tue 22 Aug to 01:01 on Wed 23 Aug.", "fact": "2000-08-22T07:33:39Z → 2000-08-23T06:00:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 21st, 00:29–01:17 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 0 of 48 minutes on the 21st and 31 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 1007 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Chicago, 2000: Tuesday 22 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": "2000-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-22", "confidence": "determinate" } ], "quote": "In Chicago, Janmāṣṭamī 2000 falls on Tuesday 22 August. Aṣṭamī runs from 02:34 on Tue 22 Aug to 01:01 on Wed 23 Aug and covers 31 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-08-25", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34453, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-08-24T20:35:33-05:00", "utc": "2000-08-25T01:35:33Z", "ms": 967167333117.2858 }, "end": { "local": "2000-08-25T17:49:40-05:00", "utc": "2000-08-25T22:49:40Z", "ms": 967243780440.3143 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-24T20:35:33-05:00", "utc": "2000-08-25T01:35:33Z", "ms": 967167333117.2858 }, "end": { "local": "2000-08-25T17:49:40-05:00", "utc": "2000-08-25T22:49:40Z", "ms": 967243780440.3143 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-08-25", "window": { "start": { "local": "2000-08-25T06:09:46-05:00", "utc": "2000-08-25T11:09:46Z", "ms": 967201785650.0608 }, "end": { "local": "2000-08-25T06:09:46-05:00", "utc": "2000-08-25T11:09:46Z", "ms": 967201785650.0608 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-08-26", "window": { "start": { "local": "2000-08-26T06:10:48-05:00", "utc": "2000-08-26T11:10:48Z", "ms": 967288247752.0034 }, "end": { "local": "2000-08-26T06:10:48-05:00", "utc": "2000-08-26T11:10:48Z", "ms": 967288247752.0034 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:36 on Thu 24 Aug to 17:50 on Fri 25 Aug.", "fact": "2000-08-25T01:35:33Z → 2000-08-25T22:49:40Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 25th and 06:11 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34453 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Chicago, 2000: Friday 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": "2000-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-25", "confidence": "determinate" } ], "quote": "In Chicago, Ajā Ekādaśī 2000 falls on Friday 25 August. Ekādaśī runs from 20:36 on Thu 24 Aug to 17:50 on Fri 25 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-08-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-08-26", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17091, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-08-26T14:48:02-05:00", "utc": "2000-08-26T19:48:02Z", "ms": 967319282439.2681 }, "end": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-26T14:48:02-05:00", "utc": "2000-08-26T19:48:02Z", "ms": 967319282439.2681 }, "end": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-08-26", "window": { "start": { "local": "2000-08-26T19:32:53-05:00", "utc": "2000-08-27T00:32:53Z", "ms": 967336373054.8037 }, "end": { "local": "2000-08-26T20:58:05-05:00", "utc": "2000-08-27T01:58:05Z", "ms": 967341484624.9562 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "2000-08-27", "window": { "start": { "local": "2000-08-27T19:31:16-05:00", "utc": "2000-08-28T00:31:16Z", "ms": 967422676294.648 }, "end": { "local": "2000-08-27T20:56:49-05:00", "utc": "2000-08-28T01:56:49Z", "ms": 967427809039.4084 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:48 on Sat 26 Aug to 11:37 on Sun 27 Aug.", "fact": "2000-08-26T19:48:02Z → 2000-08-27T16:37:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:33–20:58 on the 26th, 19:31–20:57 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 85 of 85 minutes on the 26th and 0 of 86 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 17091 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Saturday 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": "2000-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-26", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Saturday 26 August. Trayodaśī runs from 14:48 on Sat 26 Aug to 11:37 on Sun 27 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-08-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28446, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 }, "end": { "local": "2000-08-28T08:24:43-05:00", "utc": "2000-08-28T13:24:43Z", "ms": 967469082978.5426 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 }, "end": { "local": "2000-08-28T08:24:43-05:00", "utc": "2000-08-28T13:24:43Z", "ms": 967469082978.5426 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-08-27", "window": { "start": { "local": "2000-08-27T19:31:16-05:00", "utc": "2000-08-28T00:31:16Z", "ms": 967422676294.648 }, "end": { "local": "2000-08-27T20:56:49-05:00", "utc": "2000-08-28T01:56:49Z", "ms": 967427809039.4084 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "2000-08-28", "window": { "start": { "local": "2000-08-28T19:29:39-05:00", "utc": "2000-08-29T00:29:39Z", "ms": 967508978859.0259 }, "end": { "local": "2000-08-28T20:55:33-05:00", "utc": "2000-08-29T01:55:33Z", "ms": 967514132863.6936 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:37 on Sun 27 Aug to 08:25 on Mon 28 Aug.", "fact": "2000-08-27T16:37:10Z → 2000-08-28T13:24:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:31–20:57 on the 27th, 19:30–20:56 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 86 of 86 minutes on the 27th and 0 of 86 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 28446 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Chicago, 2000: Sunday 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": "2000-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-27", "confidence": "determinate" } ], "quote": "In Chicago, Aghora Caturdaśī 2000 falls on Sunday 27 August. Caturdaśī runs from 11:37 on Sun 27 Aug to 08:25 on Mon 28 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shivaratri?on=2000-08-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25719, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 }, "end": { "local": "2000-08-28T08:24:43-05:00", "utc": "2000-08-28T13:24:43Z", "ms": 967469082978.5426 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-27T11:37:10-05:00", "utc": "2000-08-27T16:37:10Z", "ms": 967394229818.2997 }, "end": { "local": "2000-08-28T08:24:43-05:00", "utc": "2000-08-28T13:24:43Z", "ms": 967469082978.5426 } }, "kaala": "nishita", "days": [ { "local_date": "2000-08-26", "window": { "start": { "local": "2000-08-27T00:28:21-05:00", "utc": "2000-08-27T05:28:21Z", "ms": 967354101442.8756 }, "end": { "local": "2000-08-27T01:16:21-05:00", "utc": "2000-08-27T06:16:21Z", "ms": 967356981442.8756 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-27", "window": { "start": { "local": "2000-08-28T00:28:04-05:00", "utc": "2000-08-28T05:28:04Z", "ms": 967440484087.5 }, "end": { "local": "2000-08-28T01:16:04-05:00", "utc": "2000-08-28T06:16:04Z", "ms": 967443364087.5 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:37 on Sun 27 Aug to 08:25 on Mon 28 Aug.", "fact": "2000-08-27T16:37:10Z → 2000-08-28T13:24:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:28–01:16 on the 26th, 00:28–01:16 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 25719 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Sunday 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": "2000-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-27", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Sunday 27 August. Caturdaśī runs from 11:37 on Sun 27 Aug to 08:25 on Mon 28 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-08-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25660, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-08-29T05:19:17-05:00", "utc": "2000-08-29T10:19:17Z", "ms": 967544357471.44 }, "end": { "local": "2000-08-30T02:30:04-05:00", "utc": "2000-08-30T07:30:04Z", "ms": 967620604256.9685 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-29T05:19:17-05:00", "utc": "2000-08-29T10:19:17Z", "ms": 967544357471.44 }, "end": { "local": "2000-08-30T02:30:04-05:00", "utc": "2000-08-30T07:30:04Z", "ms": 967620604256.9685 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-29", "window": { "start": { "local": "2000-08-29T12:26:57-05:00", "utc": "2000-08-29T17:26:57Z", "ms": 967570017334.4226 }, "end": { "local": "2000-08-29T13:14:57-05:00", "utc": "2000-08-29T18:14:57Z", "ms": 967572897334.4226 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-08-30", "window": { "start": { "local": "2000-08-30T12:26:39-05:00", "utc": "2000-08-30T17:26:39Z", "ms": 967656398967.7612 }, "end": { "local": "2000-08-30T13:14:39-05:00", "utc": "2000-08-30T18:14:39Z", "ms": 967659278967.7612 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 05:19 on Tue 29 Aug to 02:30 on Wed 30 Aug.", "fact": "2000-08-29T10:19:17Z → 2000-08-30T07:30:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 29th, 12:27–13:15 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 25660 s" }, { "step": "ruling", "text": "Rudra Vrata, Chicago, 2000: Tuesday 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": "2000-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-29", "confidence": "determinate" } ], "quote": "In Chicago, Rudra Vrata 2000 falls on Tuesday 29 August. Pratipadā runs from 05:19 on Tue 29 Aug to 02:30 on Wed 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32565, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2000-08-31T00:06:23-05:00", "utc": "2000-08-31T05:06:23Z", "ms": 967698382978.149 }, "end": { "local": "2000-08-31T22:17:05-05:00", "utc": "2000-09-01T03:17:05Z", "ms": 967778225392.0033 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-31T00:06:23-05:00", "utc": "2000-08-31T05:06:23Z", "ms": 967698382978.149 }, "end": { "local": "2000-08-31T22:17:05-05:00", "utc": "2000-09-01T03:17:05Z", "ms": 967778225392.0033 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-30", "window": { "start": { "local": "2000-08-30T12:26:39-05:00", "utc": "2000-08-30T17:26:39Z", "ms": 967656398967.7612 }, "end": { "local": "2000-08-30T13:14:39-05:00", "utc": "2000-08-30T18:14:39Z", "ms": 967659278967.7612 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-08-31", "window": { "start": { "local": "2000-08-31T12:26:20-05:00", "utc": "2000-08-31T17:26:20Z", "ms": 967742780281.3479 }, "end": { "local": "2000-08-31T13:14:20-05:00", "utc": "2000-08-31T18:14:20Z", "ms": 967745660281.3479 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:06 on Thu 31 Aug to 22:17 on Thu 31 Aug.", "fact": "2000-08-31T05:06:23Z → 2000-09-01T03:17:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 30th, 12:26–13:14 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32565 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Chicago, 2000: Thursday 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": "2000-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-08-31", "confidence": "determinate" } ], "quote": "In Chicago, Haritālikā Vrata (Hartalika Teej) 2000 falls on Thursday 31 August. Tṛtīyā runs from 00:06 on Thu 31 Aug to 22:17 on Thu 31 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28545, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-08-31T22:17:05-05:00", "utc": "2000-09-01T03:17:05Z", "ms": 967778225392.0033 }, "end": { "local": "2000-09-01T21:09:46-05:00", "utc": "2000-09-02T02:09:46Z", "ms": 967860586310.7142 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-08-31T22:17:05-05:00", "utc": "2000-09-01T03:17:05Z", "ms": 967778225392.0033 }, "end": { "local": "2000-09-01T21:09:46-05:00", "utc": "2000-09-02T02:09:46Z", "ms": 967860586310.7142 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-08-31", "window": { "start": { "local": "2000-08-31T12:26:20-05:00", "utc": "2000-08-31T17:26:20Z", "ms": 967742780281.3479 }, "end": { "local": "2000-08-31T13:14:20-05:00", "utc": "2000-08-31T18:14:20Z", "ms": 967745660281.3479 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-01", "window": { "start": { "local": "2000-09-01T12:26:01-05:00", "utc": "2000-09-01T17:26:01Z", "ms": 967829161288.1194 }, "end": { "local": "2000-09-01T13:14:01-05:00", "utc": "2000-09-01T18:14:01Z", "ms": 967832041288.1194 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:17 on Thu 31 Aug to 21:10 on Fri 1 Sep.", "fact": "2000-09-01T03:17:05Z → 2000-09-02T02:09:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 31st, 12:26–13:14 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28545 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Chicago, 2000: Friday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Caturthī 2000 falls on Friday 1 September. Caturthī runs from 22:17 on Thu 31 Aug to 21:10 on Fri 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27360, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-09-01T21:09:46-05:00", "utc": "2000-09-02T02:09:46Z", "ms": 967860586310.7142 }, "end": { "local": "2000-09-02T20:49:42-05:00", "utc": "2000-09-03T01:49:42Z", "ms": 967945782110.0985 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-01T21:09:46-05:00", "utc": "2000-09-02T02:09:46Z", "ms": 967860586310.7142 }, "end": { "local": "2000-09-02T20:49:42-05:00", "utc": "2000-09-03T01:49:42Z", "ms": 967945782110.0985 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-01", "window": { "start": { "local": "2000-09-01T12:26:01-05:00", "utc": "2000-09-01T17:26:01Z", "ms": 967829161288.1194 }, "end": { "local": "2000-09-01T13:14:01-05:00", "utc": "2000-09-01T18:14:01Z", "ms": 967832041288.1194 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-02", "window": { "start": { "local": "2000-09-02T12:25:42-05:00", "utc": "2000-09-02T17:25:42Z", "ms": 967915542002.0614 }, "end": { "local": "2000-09-02T13:13:42-05:00", "utc": "2000-09-02T18:13:42Z", "ms": 967918422002.0614 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:10 on Fri 1 Sep to 20:50 on Sat 2 Sep.", "fact": "2000-09-02T02:09:46Z → 2000-09-03T01:49:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 1st, 12:26–13:14 on the 2nd.", "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 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: disputed → only-day · margin 27360 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Chicago, 2000: Saturday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-02", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Pañcamī 2000 falls on Saturday 2 September. Pañcamī runs from 21:10 on Fri 1 Sep to 20:50 on Sat 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27360, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-09-02T20:49:42-05:00", "utc": "2000-09-03T01:49:42Z", "ms": 967945782110.0985 }, "end": { "local": "2000-09-03T21:18:43-05:00", "utc": "2000-09-04T02:18:43Z", "ms": 968033923147.7716 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-02T20:49:42-05:00", "utc": "2000-09-03T01:49:42Z", "ms": 967945782110.0985 }, "end": { "local": "2000-09-03T21:18:43-05:00", "utc": "2000-09-04T02:18:43Z", "ms": 968033923147.7716 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-02", "window": { "start": { "local": "2000-09-02T12:25:42-05:00", "utc": "2000-09-02T17:25:42Z", "ms": 967915542002.0614 }, "end": { "local": "2000-09-02T13:13:42-05:00", "utc": "2000-09-02T18:13:42Z", "ms": 967918422002.0614 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-03", "window": { "start": { "local": "2000-09-03T12:25:22-05:00", "utc": "2000-09-03T17:25:22Z", "ms": 968001922438.4055 }, "end": { "local": "2000-09-03T13:13:22-05:00", "utc": "2000-09-03T18:13:22Z", "ms": 968004802438.4055 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:50 on Sat 2 Sep to 21:19 on Sun 3 Sep.", "fact": "2000-09-03T01:49:42Z → 2000-09-04T02:18:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 2nd, 12:25–13:13 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 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: paraviddha → only-day · margin 27360 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Chicago, 2000: Sunday 3 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": "2000-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-03", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Bhādrapada) 2000 falls on Sunday 3 September. Ṣaṣṭhī runs from 20:50 on Sat 2 Sep to 21:19 on Sun 3 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29121, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-09-03T21:18:43-05:00", "utc": "2000-09-04T02:18:43Z", "ms": 968033923147.7716 }, "end": { "local": "2000-09-04T22:34:16-05:00", "utc": "2000-09-05T03:34:16Z", "ms": 968124855817.2046 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-03T21:18:43-05:00", "utc": "2000-09-04T02:18:43Z", "ms": 968033923147.7716 }, "end": { "local": "2000-09-04T22:34:16-05:00", "utc": "2000-09-05T03:34:16Z", "ms": 968124855817.2046 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-03", "window": { "start": { "local": "2000-09-03T12:25:22-05:00", "utc": "2000-09-03T17:25:22Z", "ms": 968001922438.4055 }, "end": { "local": "2000-09-03T13:13:22-05:00", "utc": "2000-09-03T18:13:22Z", "ms": 968004802438.4055 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-04", "window": { "start": { "local": "2000-09-04T12:25:03-05:00", "utc": "2000-09-04T17:25:03Z", "ms": 968088302613.5234 }, "end": { "local": "2000-09-04T13:13:03-05:00", "utc": "2000-09-04T18:13:03Z", "ms": 968091182613.5234 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 21:19 on Sun 3 Sep to 22:34 on Mon 4 Sep.", "fact": "2000-09-04T02:18:43Z → 2000-09-05T03:34:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 3rd, 12:25–13:13 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 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: purvaviddha → only-day · margin 29121 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Chicago, 2000: Monday 4 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": "2000-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-04", "confidence": "determinate" } ], "quote": "In Chicago, Muktābharaṇa Vrata 2000 falls on Monday 4 September. Saptamī runs from 21:19 on Sun 3 Sep to 22:34 on Mon 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33673, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-09-04T22:34:16-05:00", "utc": "2000-09-05T03:34:16Z", "ms": 968124855817.2046 }, "end": { "local": "2000-09-06T00:28:58-05:00", "utc": "2000-09-06T05:28:58Z", "ms": 968218138227.777 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-04T22:34:16-05:00", "utc": "2000-09-05T03:34:16Z", "ms": 968124855817.2046 }, "end": { "local": "2000-09-06T00:28:58-05:00", "utc": "2000-09-06T05:28:58Z", "ms": 968218138227.777 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-04", "window": { "start": { "local": "2000-09-04T12:25:03-05:00", "utc": "2000-09-04T17:25:03Z", "ms": 968088302613.5234 }, "end": { "local": "2000-09-04T13:13:03-05:00", "utc": "2000-09-04T18:13:03Z", "ms": 968091182613.5234 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-05", "window": { "start": { "local": "2000-09-05T12:24:43-05:00", "utc": "2000-09-05T17:24:43Z", "ms": 968174682544.7444 }, "end": { "local": "2000-09-05T13:12:43-05:00", "utc": "2000-09-05T18:12:43Z", "ms": 968177562544.7444 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 22:34 on Mon 4 Sep to 00:29 on Wed 6 Sep.", "fact": "2000-09-05T03:34:16Z → 2000-09-06T05:28:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 4th, 12:25–13:13 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 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: unstated → only-day · margin 33673 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Chicago, 2000: Tuesday 5 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": "2000-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-05", "confidence": "determinate" } ], "quote": "In Chicago, Rādhāṣṭamī 2000 falls on Tuesday 5 September. Aṣṭamī runs from 22:34 on Mon 4 Sep to 00:29 on Wed 6 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-09-09", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3452, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-09-08T05:26:40-05:00", "utc": "2000-09-08T10:26:40Z", "ms": 968408799689.5302 }, "end": { "local": "2000-09-09T08:00:36-05:00", "utc": "2000-09-09T13:00:36Z", "ms": 968504436235.6261 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-08T05:26:40-05:00", "utc": "2000-09-08T10:26:40Z", "ms": 968408799689.5302 }, "end": { "local": "2000-09-09T08:00:36-05:00", "utc": "2000-09-09T13:00:36Z", "ms": 968504436235.6261 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-09-08", "window": { "start": { "local": "2000-09-08T06:24:12-05:00", "utc": "2000-09-08T11:24:12Z", "ms": 968412251633.979 }, "end": { "local": "2000-09-08T06:24:12-05:00", "utc": "2000-09-08T11:24:12Z", "ms": 968412251633.979 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-09-09", "window": { "start": { "local": "2000-09-09T06:25:13-05:00", "utc": "2000-09-09T11:25:13Z", "ms": 968498713231.3822 }, "end": { "local": "2000-09-09T06:25:13-05:00", "utc": "2000-09-09T11:25:13Z", "ms": 968498713231.3822 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:27 on Fri 8 Sep to 08:01 on Sat 9 Sep.", "fact": "2000-09-08T10:26:40Z → 2000-09-09T13:00:36Z" }, { "step": "kaala", "text": "Sunrise is at 06:24 on the 8th and 06:25 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both sunrises qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 3452 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Chicago, 2000: Saturday 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": "2000-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-09", "confidence": "determinate" } ], "quote": "In Chicago, Parivartanī Ekādaśī 2000 falls on Saturday 9 September. Ekādaśī runs from 05:27 on Fri 8 Sep to 08:01 on Sat 9 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-09-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7370, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-09-09T08:00:36-05:00", "utc": "2000-09-09T13:00:36Z", "ms": 968504436235.6261 }, "end": { "local": "2000-09-10T10:20:09-05:00", "utc": "2000-09-10T15:20:09Z", "ms": 968599208760.0925 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-09T08:00:36-05:00", "utc": "2000-09-09T13:00:36Z", "ms": 968504436235.6261 }, "end": { "local": "2000-09-10T10:20:09-05:00", "utc": "2000-09-10T15:20:09Z", "ms": 968599208760.0925 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-09", "window": { "start": { "local": "2000-09-09T12:23:20-05:00", "utc": "2000-09-09T17:23:20Z", "ms": 968520200204.5039 }, "end": { "local": "2000-09-09T13:11:20-05:00", "utc": "2000-09-09T18:11:20Z", "ms": 968523080204.5039 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-09-10", "window": { "start": { "local": "2000-09-10T12:22:59-05:00", "utc": "2000-09-10T17:22:59Z", "ms": 968606579202.4072 }, "end": { "local": "2000-09-10T13:10:59-05:00", "utc": "2000-09-10T18:10:59Z", "ms": 968609459202.4072 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:01 on Sat 9 Sep to 10:20 on Sun 10 Sep.", "fact": "2000-09-09T13:00:36Z → 2000-09-10T15:20:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 9th, 12:23–13:11 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7370 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Chicago, 2000: Saturday 9 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": "2000-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-09", "confidence": "determinate" } ], "quote": "In Chicago, Vāmana Jayantī 2000 falls on Saturday 9 September. Dvādaśī runs from 08:01 on Sat 9 Sep to 10:20 on Sun 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-09-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24612, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-09-10T10:20:09-05:00", "utc": "2000-09-10T15:20:09Z", "ms": 968599208760.0925 }, "end": { "local": "2000-09-11T12:15:47-05:00", "utc": "2000-09-11T17:15:47Z", "ms": 968692547484.9667 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-10T10:20:09-05:00", "utc": "2000-09-10T15:20:09Z", "ms": 968599208760.0925 }, "end": { "local": "2000-09-11T12:15:47-05:00", "utc": "2000-09-11T17:15:47Z", "ms": 968692547484.9667 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-09-10", "window": { "start": { "local": "2000-09-10T19:07:44-05:00", "utc": "2000-09-11T00:07:44Z", "ms": 968630863579.3384 }, "end": { "local": "2000-09-10T20:38:20-05:00", "utc": "2000-09-11T01:38:20Z", "ms": 968636299959.0544 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "2000-09-11", "window": { "start": { "local": "2000-09-11T19:06:00-05:00", "utc": "2000-09-12T00:06:00Z", "ms": 968717159723.3898 }, "end": { "local": "2000-09-11T20:36:58-05:00", "utc": "2000-09-12T01:36:58Z", "ms": 968722618166.7529 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:20 on Sun 10 Sep to 12:16 on Mon 11 Sep.", "fact": "2000-09-10T15:20:09Z → 2000-09-11T17:15:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:08–20:38 on the 10th, 19:06–20:37 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 91 of 91 minutes on the 10th and 0 of 91 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 24612 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Sunday 10 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": "2000-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-10", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Sunday 10 September. Trayodaśī runs from 10:20 on Sun 10 Sep to 12:16 on Mon 11 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-09-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11806, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-09-11T12:15:47-05:00", "utc": "2000-09-11T17:15:47Z", "ms": 968692547484.9667 }, "end": { "local": "2000-09-12T13:42:00-05:00", "utc": "2000-09-12T18:42:00Z", "ms": 968784119593.1101 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2000-09-11T12:15:47-05:00", "utc": "2000-09-11T17:15:47Z", "ms": 968692547484.9667 }, "end": { "local": "2000-09-12T13:42:00-05:00", "utc": "2000-09-12T18:42:00Z", "ms": 968784119593.1101 } }, "kaala": "udaya-3", "days": [ { "local_date": "2000-09-11", "window": { "start": { "local": "2000-09-11T06:27:16-05:00", "utc": "2000-09-11T11:27:16Z", "ms": 968671636427.2089 }, "end": { "local": "2000-09-11T08:59:01-05:00", "utc": "2000-09-11T13:59:01Z", "ms": 968680741086.4451 } }, "covered_min": 0, "window_min": 152, "qualifies": false }, { "local_date": "2000-09-12", "window": { "start": { "local": "2000-09-12T06:28:18-05:00", "utc": "2000-09-12T11:28:18Z", "ms": 968758098048.613 }, "end": { "local": "2000-09-12T08:59:30-05:00", "utc": "2000-09-12T13:59:30Z", "ms": 968767169567.2006 } }, "covered_min": 151, "window_min": 151, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:16 on Mon 11 Sep to 13:42 on Tue 12 Sep.", "fact": "2000-09-11T17:15:47Z → 2000-09-12T18:42:00Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:27–08:59 on the 11th, 06:28–08:59 on the 12th.", "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 0 of 152 minutes on the 11th and 151 of 151 on the 12th.", "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 11806 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Chicago, 2000: Tuesday 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": "2000-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-12", "confidence": "determinate" } ], "quote": "In Chicago, Ananta Caturdaśī 2000 falls on Tuesday 12 September. Caturdaśī runs from 12:16 on Mon 11 Sep to 13:42 on Tue 12 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-09-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22939, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-09-16T14:29:05-05:00", "utc": "2000-09-16T19:29:05Z", "ms": 969132544565.8009 }, "end": { "local": "2000-09-17T13:39:14-05:00", "utc": "2000-09-17T18:39:14Z", "ms": 969215954287.0509 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-16T14:29:05-05:00", "utc": "2000-09-16T19:29:05Z", "ms": 969132544565.8009 }, "end": { "local": "2000-09-17T13:39:14-05:00", "utc": "2000-09-17T18:39:14Z", "ms": 969215954287.0509 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-09-16", "window": { "start": { "local": "2000-09-16T20:51:23-05:00", "utc": "2000-09-17T01:51:23Z", "ms": 969155483231.424 }, "end": { "local": "2000-09-16T20:51:23-05:00", "utc": "2000-09-17T01:51:23Z", "ms": 969155483231.424 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-09-17", "window": { "start": { "local": "2000-09-17T21:22:58-05:00", "utc": "2000-09-18T02:22:58Z", "ms": 969243777522.0349 }, "end": { "local": "2000-09-17T21:22:58-05:00", "utc": "2000-09-18T02:22:58Z", "ms": 969243777522.0349 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:29 on Sat 16 Sep to 13:39 on Sun 17 Sep.", "fact": "2000-09-16T19:29:05Z → 2000-09-17T18:39:14Z" }, { "step": "kaala", "text": "Moonrise is at 20:51 on the 16th and 21:23 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 22939 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Saturday 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": "2000-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-16", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Saturday 16 September. Caturthī runs from 14:29 on Sat 16 Sep to 13:39 on Sun 17 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-09-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34090, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-09-18T12:30:38-05:00", "utc": "2000-09-18T17:30:38Z", "ms": 969298238324.3257 }, "end": { "local": "2000-09-19T11:05:14-05:00", "utc": "2000-09-19T16:05:14Z", "ms": 969379513961.2966 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-18T12:30:38-05:00", "utc": "2000-09-18T17:30:38Z", "ms": 969298238324.3257 }, "end": { "local": "2000-09-19T11:05:14-05:00", "utc": "2000-09-19T16:05:14Z", "ms": 969379513961.2966 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-09-18", "window": { "start": { "local": "2000-09-18T21:58:48-05:00", "utc": "2000-09-19T02:58:48Z", "ms": 969332328279.2322 }, "end": { "local": "2000-09-18T21:58:48-05:00", "utc": "2000-09-19T02:58:48Z", "ms": 969332328279.2322 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-09-19", "window": { "start": { "local": "2000-09-19T22:40:37-05:00", "utc": "2000-09-20T03:40:37Z", "ms": 969421236847.5641 }, "end": { "local": "2000-09-19T22:40:37-05:00", "utc": "2000-09-20T03:40:37Z", "ms": 969421236847.5641 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 12:31 on Mon 18 Sep to 11:05 on Tue 19 Sep.", "fact": "2000-09-18T17:30:38Z → 2000-09-19T16:05:14Z" }, { "step": "kaala", "text": "Moonrise is at 21:59 on the 18th and 22:41 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34090 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Chicago, 2000: Monday 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": "2000-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-18", "confidence": "determinate" } ], "quote": "In Chicago, Candra Ṣaṣṭhī 2000 falls on Monday 18 September. Ṣaṣṭhī runs from 12:31 on Mon 18 Sep to 11:05 on Tue 19 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33960, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-09-20T09:24:19-05:00", "utc": "2000-09-20T14:24:19Z", "ms": 969459859080.7363 }, "end": { "local": "2000-09-21T07:28:52-05:00", "utc": "2000-09-21T12:28:52Z", "ms": 969539331967.1974 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-20T09:24:19-05:00", "utc": "2000-09-20T14:24:19Z", "ms": 969459859080.7363 }, "end": { "local": "2000-09-21T07:28:52-05:00", "utc": "2000-09-21T12:28:52Z", "ms": 969539331967.1974 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-09-20", "window": { "start": { "local": "2000-09-20T18:50:19-05:00", "utc": "2000-09-20T23:50:19Z", "ms": 969493818648.4498 }, "end": { "local": "2000-09-20T20:24:37-05:00", "utc": "2000-09-21T01:24:37Z", "ms": 969499476946.7245 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "2000-09-21", "window": { "start": { "local": "2000-09-21T18:48:34-05:00", "utc": "2000-09-21T23:48:34Z", "ms": 969580113949.6881 }, "end": { "local": "2000-09-21T20:23:15-05:00", "utc": "2000-09-22T01:23:15Z", "ms": 969585794555.4084 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:24 on Wed 20 Sep to 07:29 on Thu 21 Sep.", "fact": "2000-09-20T14:24:19Z → 2000-09-21T12:28:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:50–20:25 on the 20th, 18:49–20:23 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 94 of 94 minutes on the 20th and 0 of 95 on the 21st.", "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 33960 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Chicago, 2000: Wednesday 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": "2000-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-20", "confidence": "determinate" } ], "quote": "In Chicago, Jitāṣṭamī (Jitiya) 2000 falls on Wednesday 20 September. Aṣṭamī runs from 09:24 on Wed 20 Sep to 07:29 on Thu 21 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28738, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-09-20T09:24:19-05:00", "utc": "2000-09-20T14:24:19Z", "ms": 969459859080.7363 }, "end": { "local": "2000-09-21T07:28:52-05:00", "utc": "2000-09-21T12:28:52Z", "ms": 969539331967.1974 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-20T09:24:19-05:00", "utc": "2000-09-20T14:24:19Z", "ms": 969459859080.7363 }, "end": { "local": "2000-09-21T07:28:52-05:00", "utc": "2000-09-21T12:28:52Z", "ms": 969539331967.1974 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-09-19", "window": { "start": { "local": "2000-09-19T22:40:37-05:00", "utc": "2000-09-20T03:40:37Z", "ms": 969421236847.5641 }, "end": { "local": "2000-09-19T22:40:37-05:00", "utc": "2000-09-20T03:40:37Z", "ms": 969421236847.5641 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-09-20", "window": { "start": { "local": "2000-09-20T23:29:54-05:00", "utc": "2000-09-21T04:29:54Z", "ms": 969510593520.4159 }, "end": { "local": "2000-09-20T23:29:54-05:00", "utc": "2000-09-21T04:29:54Z", "ms": 969510593520.4159 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:24 on Wed 20 Sep to 07:29 on Thu 21 Sep.", "fact": "2000-09-20T14:24:19Z → 2000-09-21T12:28:52Z" }, { "step": "kaala", "text": "Moonrise is at 22:41 on the 19th and 23:30 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 28738 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Chicago, 2000: Wednesday 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": "2000-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-20", "confidence": "determinate" } ], "quote": "In Chicago, Mahālakṣmī Vrata Samāpana 2000 falls on Wednesday 20 September. Aṣṭamī runs from 09:24 on Wed 20 Sep to 07:29 on Thu 21 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-09-23", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13209, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-09-23T02:59:32-05:00", "utc": "2000-09-23T07:59:32Z", "ms": 969695972162.7499 }, "end": { "local": "2000-09-24T00:30:22-05:00", "utc": "2000-09-24T05:30:22Z", "ms": 969773422115.1635 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-23T02:59:32-05:00", "utc": "2000-09-23T07:59:32Z", "ms": 969695972162.7499 }, "end": { "local": "2000-09-24T00:30:22-05:00", "utc": "2000-09-24T05:30:22Z", "ms": 969773422115.1635 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-09-23", "window": { "start": { "local": "2000-09-23T06:39:41-05:00", "utc": "2000-09-23T11:39:41Z", "ms": 969709181269.018 }, "end": { "local": "2000-09-23T06:39:41-05:00", "utc": "2000-09-23T11:39:41Z", "ms": 969709181269.018 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-09-24", "window": { "start": { "local": "2000-09-24T06:40:44-05:00", "utc": "2000-09-24T11:40:44Z", "ms": 969795644222.9259 }, "end": { "local": "2000-09-24T06:40:44-05:00", "utc": "2000-09-24T11:40:44Z", "ms": 969795644222.9259 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:00 on Sat 23 Sep to 00:30 on Sun 24 Sep.", "fact": "2000-09-23T07:59:32Z → 2000-09-24T05:30:22Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 23rd and 06:41 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 13209 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Chicago, 2000: Saturday 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": "2000-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-23", "confidence": "determinate" } ], "quote": "In Chicago, Indirā Ekādaśī 2000 falls on Saturday 23 September. Ekādaśī runs from 03:00 on Sat 23 Sep to 00:30 on Sun 24 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-09-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-09-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2574, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-09-24T21:56:47-05:00", "utc": "2000-09-25T02:56:47Z", "ms": 969850607157.2867 }, "end": { "local": "2000-09-25T19:24:31-05:00", "utc": "2000-09-26T00:24:31Z", "ms": 969927870602.0846 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-24T21:56:47-05:00", "utc": "2000-09-25T02:56:47Z", "ms": 969850607157.2867 }, "end": { "local": "2000-09-25T19:24:31-05:00", "utc": "2000-09-26T00:24:31Z", "ms": 969927870602.0846 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-09-24", "window": { "start": { "local": "2000-09-24T18:43:20-05:00", "utc": "2000-09-24T23:43:20Z", "ms": 969839000476.6263 }, "end": { "local": "2000-09-24T20:19:08-05:00", "utc": "2000-09-25T01:19:08Z", "ms": 969844748061.2413 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2000-09-25", "window": { "start": { "local": "2000-09-25T18:41:36-05:00", "utc": "2000-09-25T23:41:36Z", "ms": 969925296287.468 }, "end": { "local": "2000-09-25T20:17:46-05:00", "utc": "2000-09-26T01:17:46Z", "ms": 969931066207.7997 } }, "covered_min": 43, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:57 on Sun 24 Sep to 19:25 on Mon 25 Sep.", "fact": "2000-09-25T02:56:47Z → 2000-09-26T00:24:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:43–20:19 on the 24th, 18:42–20:18 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 96 minutes on the 24th and 43 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 2574 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Monday 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": "2000-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-25", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Monday 25 September. Trayodaśī runs from 21:57 on Sun 24 Sep to 19:25 on Mon 25 Sep and covers 43 of 96 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-09-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-09-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17623, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-09-25T19:24:31-05:00", "utc": "2000-09-26T00:24:31Z", "ms": 969927870602.0846 }, "end": { "local": "2000-09-26T17:00:34-05:00", "utc": "2000-09-26T22:00:34Z", "ms": 970005633875.5753 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-25T19:24:31-05:00", "utc": "2000-09-26T00:24:31Z", "ms": 969927870602.0846 }, "end": { "local": "2000-09-26T17:00:34-05:00", "utc": "2000-09-26T22:00:34Z", "ms": 970005633875.5753 } }, "kaala": "nishita", "days": [ { "local_date": "2000-09-25", "window": { "start": { "local": "2000-09-26T00:18:13-05:00", "utc": "2000-09-26T05:18:13Z", "ms": 969945493488.7118 }, "end": { "local": "2000-09-26T01:06:13-05:00", "utc": "2000-09-26T06:06:13Z", "ms": 969948373488.7118 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-09-26", "window": { "start": { "local": "2000-09-27T00:17:53-05:00", "utc": "2000-09-27T05:17:53Z", "ms": 970031873254.5785 }, "end": { "local": "2000-09-27T01:05:53-05:00", "utc": "2000-09-27T06:05:53Z", "ms": 970034753254.5785 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:25 on Mon 25 Sep to 17:01 on Tue 26 Sep.", "fact": "2000-09-26T00:24:31Z → 2000-09-26T22:00:34Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:18–01:06 on the 25th, 00:18–01:06 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 17623 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Monday 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": "2000-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-25", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Monday 25 September. Caturdaśī runs from 19:25 on Mon 25 Sep to 17:01 on Tue 26 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-09-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2646, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2000-09-26T17:00:34-05:00", "utc": "2000-09-26T22:00:34Z", "ms": 970005633875.5753 }, "end": { "local": "2000-09-27T14:52:57-05:00", "utc": "2000-09-27T19:52:57Z", "ms": 970084377092.4595 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-26T17:00:34-05:00", "utc": "2000-09-26T22:00:34Z", "ms": 970005633875.5753 }, "end": { "local": "2000-09-27T14:52:57-05:00", "utc": "2000-09-27T19:52:57Z", "ms": 970084377092.4595 } }, "kaala": "aparahna", "days": [ { "local_date": "2000-09-26", "window": { "start": { "local": "2000-09-26T13:53:04-05:00", "utc": "2000-09-26T18:53:04Z", "ms": 969994383652.7892 }, "end": { "local": "2000-09-26T16:16:28-05:00", "utc": "2000-09-26T21:16:28Z", "ms": 970002987973.7336 } }, "covered_min": 0, "window_min": 143, "qualifies": false }, { "local_date": "2000-09-27", "window": { "start": { "local": "2000-09-27T13:52:27-05:00", "utc": "2000-09-27T18:52:27Z", "ms": 970080746800.803 }, "end": { "local": "2000-09-27T16:15:18-05:00", "utc": "2000-09-27T21:15:18Z", "ms": 970089317662.9111 } }, "covered_min": 61, "window_min": 143, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 17:01 on Tue 26 Sep to 14:53 on Wed 27 Sep.", "fact": "2000-09-26T22:00:34Z → 2000-09-27T19:52:57Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:53–16:16 on the 26th, 13:52–16:15 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 143 minutes on the 26th and 61 of 143 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 2646 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Chicago, 2000: Wednesday 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": "2000-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-27", "confidence": "determinate" } ], "quote": "In Chicago, Mahālaya Amāvāsyā 2000 falls on Wednesday 27 September. Amāvasyā runs from 17:01 on Tue 26 Sep to 14:53 on Wed 27 Sep and covers 61 of 143 minutes of aparāhṇa that afternoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 327, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-09-27T14:52:57-05:00", "utc": "2000-09-27T19:52:57Z", "ms": 970084377092.4595 }, "end": { "local": "2000-09-28T13:10:08-05:00", "utc": "2000-09-28T18:10:08Z", "ms": 970164608456.6036 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-27T14:52:57-05:00", "utc": "2000-09-27T19:52:57Z", "ms": 970084377092.4595 }, "end": { "local": "2000-09-28T13:10:08-05:00", "utc": "2000-09-28T18:10:08Z", "ms": 970164608456.6036 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-27", "window": { "start": { "local": "2000-09-27T12:17:01-05:00", "utc": "2000-09-27T17:17:01Z", "ms": 970075021369.749 }, "end": { "local": "2000-09-27T13:05:01-05:00", "utc": "2000-09-27T18:05:01Z", "ms": 970077901369.749 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-09-28", "window": { "start": { "local": "2000-09-28T12:16:41-05:00", "utc": "2000-09-28T17:16:41Z", "ms": 970161401472.681 }, "end": { "local": "2000-09-28T13:04:41-05:00", "utc": "2000-09-28T18:04:41Z", "ms": 970164281472.681 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:53 on Wed 27 Sep to 13:10 on Thu 28 Sep.", "fact": "2000-09-27T19:52:57Z → 2000-09-28T18:10:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 27th, 12:17–13:05 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 327 s" }, { "step": "ruling", "text": "Navarātrārambha, Chicago, 2000: Thursday 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": "2000-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-28", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Navratri) 2000 falls on Thursday 28 September. Pratipadā runs from 14:53 on Wed 27 Sep to 13:10 on Thu 28 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-09-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1811, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-09-30T11:30:36-05:00", "utc": "2000-09-30T16:30:36Z", "ms": 970331436383.7592 }, "end": { "local": "2000-10-01T11:45:32-05:00", "utc": "2000-10-01T16:45:32Z", "ms": 970418731883.1298 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-09-30T11:30:36-05:00", "utc": "2000-09-30T16:30:36Z", "ms": 970331436383.7592 }, "end": { "local": "2000-10-01T11:45:32-05:00", "utc": "2000-10-01T16:45:32Z", "ms": 970418731883.1298 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-09-30", "window": { "start": { "local": "2000-09-30T12:16:02-05:00", "utc": "2000-09-30T17:16:02Z", "ms": 970334162420.696 }, "end": { "local": "2000-09-30T13:04:02-05:00", "utc": "2000-09-30T18:04:02Z", "ms": 970337042420.696 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-10-01", "window": { "start": { "local": "2000-10-01T12:15:43-05:00", "utc": "2000-10-01T17:15:43Z", "ms": 970420543300.281 }, "end": { "local": "2000-10-01T13:03:43-05:00", "utc": "2000-10-01T18:03:43Z", "ms": 970423423300.281 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:31 on Sat 30 Sep to 11:46 on Sun 1 Oct.", "fact": "2000-09-30T16:30:36Z → 2000-10-01T16:45:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:16–13:04 on the 30th, 12:16–13:04 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1811 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Saturday 30 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-09-30", "confidence": "boundary" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Saturday 30 September. Caturthī runs from 11:31 on Sat 30 Sep to 11:46 on Sun 1 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-09-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24696, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-10-03T14:28:26-05:00", "utc": "2000-10-03T19:28:26Z", "ms": 970601305616.2087 }, "end": { "local": "2000-10-04T16:43:30-05:00", "utc": "2000-10-04T21:43:30Z", "ms": 970695810361.706 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-10-03T14:28:26-05:00", "utc": "2000-10-03T19:28:26Z", "ms": 970601305616.2087 }, "end": { "local": "2000-10-04T16:43:30-05:00", "utc": "2000-10-04T21:43:30Z", "ms": 970695810361.706 } }, "kaala": "udaya-1", "days": [ { "local_date": "2000-10-03", "window": { "start": { "local": "2000-10-03T06:50:20-05:00", "utc": "2000-10-03T11:50:20Z", "ms": 970573819770.9044 }, "end": { "local": "2000-10-03T07:36:50-05:00", "utc": "2000-10-03T12:36:50Z", "ms": 970576609929.4674 } }, "covered_min": 0, "window_min": 47, "qualifies": false }, { "local_date": "2000-10-04", "window": { "start": { "local": "2000-10-04T06:51:25-05:00", "utc": "2000-10-04T11:51:25Z", "ms": 970660284820.5916 }, "end": { "local": "2000-10-04T07:37:44-05:00", "utc": "2000-10-04T12:37:44Z", "ms": 970663063881.573 } }, "covered_min": 46, "window_min": 46, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:28 on Tue 3 Oct to 16:44 on Wed 4 Oct.", "fact": "2000-10-03T19:28:26Z → 2000-10-04T21:43:30Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:50–07:37 on the 3rd, 06:51–07:38 on the 4th.", "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 47 minutes on the 3rd and 46 of 46 on the 4th.", "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 24696 s" }, { "step": "ruling", "text": "Durgā Saptamī, Chicago, 2000: Wednesday 4 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": "2000-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-04", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Saptamī 2000 falls on Wednesday 4 October. Saptamī runs from 14:28 on Tue 3 Oct to 16:44 on Wed 4 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13243, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-10-04T16:43:30-05:00", "utc": "2000-10-04T21:43:30Z", "ms": 970695810361.706 }, "end": { "local": "2000-10-05T19:17:42-05:00", "utc": "2000-10-06T00:17:42Z", "ms": 970791462355.9001 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-10-04T16:43:30-05:00", "utc": "2000-10-04T21:43:30Z", "ms": 970695810361.706 }, "end": { "local": "2000-10-05T19:17:42-05:00", "utc": "2000-10-06T00:17:42Z", "ms": 970791462355.9001 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-04", "window": { "start": { "local": "2000-10-04T12:14:48-05:00", "utc": "2000-10-04T17:14:48Z", "ms": 970679687777.9526 }, "end": { "local": "2000-10-04T13:02:48-05:00", "utc": "2000-10-04T18:02:48Z", "ms": 970682567777.9526 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-10-05", "window": { "start": { "local": "2000-10-05T12:14:30-05:00", "utc": "2000-10-05T17:14:30Z", "ms": 970766069946.9534 }, "end": { "local": "2000-10-05T13:02:30-05:00", "utc": "2000-10-05T18:02:30Z", "ms": 970768949946.9534 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 16:44 on Wed 4 Oct to 19:18 on Thu 5 Oct.", "fact": "2000-10-04T21:43:30Z → 2000-10-06T00:17:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 4th, 12:14–13:02 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 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13243 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Chicago, 2000: Thursday 5 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": "2000-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-05", "confidence": "determinate" } ], "quote": "In Chicago, Mahāṣṭamī (Durga Ashtami) 2000 falls on Thursday 5 October. Aṣṭamī runs from 16:44 on Wed 4 Oct to 19:18 on Thu 5 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22512, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2000-10-05T19:17:42-05:00", "utc": "2000-10-06T00:17:42Z", "ms": 970791462355.9001 }, "end": { "local": "2000-10-06T21:54:48-05:00", "utc": "2000-10-07T02:54:48Z", "ms": 970887287792.4036 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-10-05T19:17:42-05:00", "utc": "2000-10-06T00:17:42Z", "ms": 970791462355.9001 }, "end": { "local": "2000-10-06T21:54:48-05:00", "utc": "2000-10-07T02:54:48Z", "ms": 970887287792.4036 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-05", "window": { "start": { "local": "2000-10-05T12:14:30-05:00", "utc": "2000-10-05T17:14:30Z", "ms": 970766069946.9534 }, "end": { "local": "2000-10-05T13:02:30-05:00", "utc": "2000-10-05T18:02:30Z", "ms": 970768949946.9534 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-10-06", "window": { "start": { "local": "2000-10-06T12:14:12-05:00", "utc": "2000-10-06T17:14:12Z", "ms": 970852452487.0383 }, "end": { "local": "2000-10-06T13:02:12-05:00", "utc": "2000-10-06T18:02:12Z", "ms": 970855332487.0383 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 19:18 on Thu 5 Oct to 21:55 on Fri 6 Oct.", "fact": "2000-10-06T00:17:42Z → 2000-10-07T02:54:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:14–13:02 on the 5th, 12:14–13:02 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 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22512 s" }, { "step": "ruling", "text": "Mahānavamī, Chicago, 2000: Friday 6 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": "2000-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-06", "confidence": "determinate" } ], "quote": "In Chicago, Mahānavamī 2000 falls on Friday 6 October. Navamī runs from 19:18 on Thu 5 Oct to 21:55 on Fri 6 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19878, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2000-10-06T21:54:48-05:00", "utc": "2000-10-07T02:54:48Z", "ms": 970887287792.4036 }, "end": { "local": "2000-10-08T00:18:40-05:00", "utc": "2000-10-08T05:18:40Z", "ms": 970982320171.8134 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "2000-10-07T01:23:24-05:00", "utc": "2000-10-07T06:23:24Z", "ms": 970899803807.0396 }, "end": { "local": "2000-10-08T00:18:40-05:00", "utc": "2000-10-08T05:18:40Z", "ms": 970982320171.8134 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "2000-10-07T01:23:24-05:00", "utc": "2000-10-07T06:23:24Z", "ms": 970899803807.0396 }, "end": { "local": "2000-10-08T04:14:25-05:00", "utc": "2000-10-08T09:14:25Z", "ms": 970996465248.9017 } } }, "kaala": "daytime", "days": [ { "local_date": "2000-10-07", "window": { "start": { "local": "2000-10-07T06:54:41-05:00", "utc": "2000-10-07T11:54:41Z", "ms": 970919681463.3674 }, "end": { "local": "2000-10-07T18:21:09-05:00", "utc": "2000-10-07T23:21:09Z", "ms": 970960869373.5228 } }, "covered_min": 686, "window_min": 686, "qualifies": true }, { "local_date": "2000-10-08", "window": { "start": { "local": "2000-10-08T06:55:48-05:00", "utc": "2000-10-08T11:55:48Z", "ms": 971006147534.593 }, "end": { "local": "2000-10-08T18:19:30-05:00", "utc": "2000-10-08T23:19:30Z", "ms": 971047169988.8514 } }, "covered_min": 0, "window_min": 684, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 21:55 on Fri 6 Oct to 00:19 on Sun 8 Oct, and Śravaṇa from 01:23 on Sat 7 Oct to 04:14 on Sun 8 Oct. They are together from 01:23 on Sat 7 Oct to 00:19 on Sun 8 Oct.", "fact": "2000-10-07T06:23:24Z → 2000-10-08T05:18:40Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:55–18:21 on the 7th, 06:56–18:19 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 686 of 686 minutes on the 7th and 0 of 684 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 19878 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Chicago, 2000: Saturday 7 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": "2000-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-07", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Daśamī (Dussehra) 2000 falls on Saturday 7 October. Daśamī runs from 21:55 on Fri 6 Oct to 00:19 on Sun 8 Oct and is with Śravaṇa in the day time that day, for 686 minutes.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-10-08", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16855, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-10-08T00:18:40-05:00", "utc": "2000-10-08T05:18:40Z", "ms": 970982320171.8134 }, "end": { "local": "2000-10-09T02:15:59-05:00", "utc": "2000-10-09T07:15:59Z", "ms": 971075759098.7015 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-10-08T00:18:40-05:00", "utc": "2000-10-08T05:18:40Z", "ms": 970982320171.8134 }, "end": { "local": "2000-10-09T02:15:59-05:00", "utc": "2000-10-09T07:15:59Z", "ms": 971075759098.7015 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-10-08", "window": { "start": { "local": "2000-10-08T06:55:48-05:00", "utc": "2000-10-08T11:55:48Z", "ms": 971006147534.593 }, "end": { "local": "2000-10-08T06:55:48-05:00", "utc": "2000-10-08T11:55:48Z", "ms": 971006147534.593 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-10-09", "window": { "start": { "local": "2000-10-09T06:56:54-05:00", "utc": "2000-10-09T11:56:54Z", "ms": 971092613880.9404 }, "end": { "local": "2000-10-09T06:56:54-05:00", "utc": "2000-10-09T11:56:54Z", "ms": 971092613880.9404 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:19 on Sun 8 Oct to 02:16 on Mon 9 Oct.", "fact": "2000-10-08T05:18:40Z → 2000-10-09T07:15:59Z" }, { "step": "kaala", "text": "Sunrise is at 06:56 on the 8th and 06:57 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is not on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16855 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Chicago, 2000: Sunday 8 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": "2000-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-08", "confidence": "determinate" } ], "quote": "In Chicago, Pāśāṅkuśā Ekādaśī 2000 falls on Sunday 8 October. Ekādaśī runs from 00:19 on Sun 8 Oct to 02:16 on Mon 9 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-10-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-10-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27521, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-10-10T03:37:53-05:00", "utc": "2000-10-10T08:37:53Z", "ms": 971167073482.0419 }, "end": { "local": "2000-10-11T04:20:30-05:00", "utc": "2000-10-11T09:20:30Z", "ms": 971256029512.3485 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2000-10-10T03:37:53-05:00", "utc": "2000-10-10T08:37:53Z", "ms": 971167073482.0419 }, "end": { "local": "2000-10-11T04:20:30-05:00", "utc": "2000-10-11T09:20:30Z", "ms": 971256029512.3485 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-09", "window": { "start": { "local": "2000-10-09T18:17:51-05:00", "utc": "2000-10-09T23:17:51Z", "ms": 971133471194.534 }, "end": { "local": "2000-10-09T19:59:12-05:00", "utc": "2000-10-10T00:59:12Z", "ms": 971139552436.6914 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "2000-10-10", "window": { "start": { "local": "2000-10-10T18:16:13-05:00", "utc": "2000-10-10T23:16:13Z", "ms": 971219773024.6726 }, "end": { "local": "2000-10-10T19:57:56-05:00", "utc": "2000-10-11T00:57:56Z", "ms": 971225876279.049 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:38 on Tue 10 Oct to 04:20 on Wed 11 Oct.", "fact": "2000-10-10T08:37:53Z → 2000-10-11T09:20:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:59 on the 9th, 18:16–19:58 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 101 minutes on the 9th and 102 of 102 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27521 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Tuesday 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": "2000-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-10", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Tuesday 10 October. Trayodaśī runs from 03:38 on Tue 10 Oct to 04:20 on Wed 11 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-10-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4763, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-10-15T23:48:42-05:00", "utc": "2000-10-16T04:48:42Z", "ms": 971671721546.3474 }, "end": { "local": "2000-10-16T21:57:54-05:00", "utc": "2000-10-17T02:57:54Z", "ms": 971751473997.5708 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-15T23:48:42-05:00", "utc": "2000-10-16T04:48:42Z", "ms": 971671721546.3474 }, "end": { "local": "2000-10-16T21:57:54-05:00", "utc": "2000-10-17T02:57:54Z", "ms": 971751473997.5708 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-10-15", "window": { "start": { "local": "2000-10-15T19:58:12-05:00", "utc": "2000-10-16T00:58:12Z", "ms": 971657892365.9797 }, "end": { "local": "2000-10-15T19:58:12-05:00", "utc": "2000-10-16T00:58:12Z", "ms": 971657892365.9797 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-10-16", "window": { "start": { "local": "2000-10-16T20:38:31-05:00", "utc": "2000-10-17T01:38:31Z", "ms": 971746711354.3071 }, "end": { "local": "2000-10-16T20:38:31-05:00", "utc": "2000-10-17T01:38:31Z", "ms": 971746711354.3071 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:49 on Sun 15 Oct to 21:58 on Mon 16 Oct.", "fact": "2000-10-16T04:48:42Z → 2000-10-17T02:57:54Z" }, { "step": "kaala", "text": "Moonrise is at 19:58 on the 15th and 20:39 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4763 s" }, { "step": "ruling", "text": "Karaka Caturthī, Chicago, 2000: Monday 16 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-16", "confidence": "determinate" } ], "quote": "In Chicago, Karaka Caturthī (Karwa Chauth) 2000 falls on Monday 16 October. Caturthī runs from 23:49 on Sun 15 Oct to 21:58 on Mon 16 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-10-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4763, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-10-15T23:48:42-05:00", "utc": "2000-10-16T04:48:42Z", "ms": 971671721546.3474 }, "end": { "local": "2000-10-16T21:57:54-05:00", "utc": "2000-10-17T02:57:54Z", "ms": 971751473997.5708 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-15T23:48:42-05:00", "utc": "2000-10-16T04:48:42Z", "ms": 971671721546.3474 }, "end": { "local": "2000-10-16T21:57:54-05:00", "utc": "2000-10-17T02:57:54Z", "ms": 971751473997.5708 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-10-15", "window": { "start": { "local": "2000-10-15T19:58:12-05:00", "utc": "2000-10-16T00:58:12Z", "ms": 971657892365.9797 }, "end": { "local": "2000-10-15T19:58:12-05:00", "utc": "2000-10-16T00:58:12Z", "ms": 971657892365.9797 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-10-16", "window": { "start": { "local": "2000-10-16T20:38:31-05:00", "utc": "2000-10-17T01:38:31Z", "ms": 971746711354.3071 }, "end": { "local": "2000-10-16T20:38:31-05:00", "utc": "2000-10-17T01:38:31Z", "ms": 971746711354.3071 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:49 on Sun 15 Oct to 21:58 on Mon 16 Oct.", "fact": "2000-10-16T04:48:42Z → 2000-10-17T02:57:54Z" }, { "step": "kaala", "text": "Moonrise is at 19:58 on the 15th and 20:39 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4763 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Monday 16 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-16", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Monday 16 October. Caturthī runs from 23:49 on Sun 15 Oct to 21:58 on Mon 16 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-10-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26621, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-10-19T15:59:36-05:00", "utc": "2000-10-19T20:59:36Z", "ms": 971989175670.9272 }, "end": { "local": "2000-10-20T13:58:45-05:00", "utc": "2000-10-20T18:58:45Z", "ms": 972068325226.4299 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-19T15:59:36-05:00", "utc": "2000-10-19T20:59:36Z", "ms": 971989175670.9272 }, "end": { "local": "2000-10-20T13:58:45-05:00", "utc": "2000-10-20T18:58:45Z", "ms": 972068325226.4299 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-10-19", "window": { "start": { "local": "2000-10-19T23:23:16-05:00", "utc": "2000-10-20T04:23:16Z", "ms": 972015796274.8108 }, "end": { "local": "2000-10-19T23:23:16-05:00", "utc": "2000-10-20T04:23:16Z", "ms": 972015796274.8108 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-10-20", "window": { "start": { "local": "2000-10-21T00:30:53-05:00", "utc": "2000-10-21T05:30:53Z", "ms": 972106253299.9491 }, "end": { "local": "2000-10-21T00:30:53-05:00", "utc": "2000-10-21T05:30:53Z", "ms": 972106253299.9491 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 16:00 on Thu 19 Oct to 13:59 on Fri 20 Oct.", "fact": "2000-10-19T20:59:36Z → 2000-10-20T18:58:45Z" }, { "step": "kaala", "text": "Moonrise is at 23:23 on the 19th and 00:31 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 19th and is not on the 20th.", "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 26621 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Chicago, 2000: Thursday 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": "2000-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-19", "confidence": "determinate" } ], "quote": "In Chicago, Ahoyī Aṣṭamī 2000 falls on Thursday 19 October. Aṣṭamī runs from 16:00 on Thu 19 Oct to 13:59 on Fri 20 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-10-23", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3451, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-10-22T10:02:22-05:00", "utc": "2000-10-22T15:02:22Z", "ms": 972226942353.922 }, "end": { "local": "2000-10-23T08:10:27-05:00", "utc": "2000-10-23T13:10:27Z", "ms": 972306627259.7351 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-22T10:02:22-05:00", "utc": "2000-10-22T15:02:22Z", "ms": 972226942353.922 }, "end": { "local": "2000-10-23T08:10:27-05:00", "utc": "2000-10-23T13:10:27Z", "ms": 972306627259.7351 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-10-22", "window": { "start": { "local": "2000-10-22T07:11:45-05:00", "utc": "2000-10-22T12:11:45Z", "ms": 972216705045.0776 }, "end": { "local": "2000-10-22T07:11:45-05:00", "utc": "2000-10-22T12:11:45Z", "ms": 972216705045.0776 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-10-23", "window": { "start": { "local": "2000-10-23T07:12:56-05:00", "utc": "2000-10-23T12:12:56Z", "ms": 972303175951.2726 }, "end": { "local": "2000-10-23T07:12:56-05:00", "utc": "2000-10-23T12:12:56Z", "ms": 972303175951.2726 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:02 on Sun 22 Oct to 08:10 on Mon 23 Oct.", "fact": "2000-10-22T15:02:22Z → 2000-10-23T13:10:27Z" }, { "step": "kaala", "text": "Sunrise is at 07:12 on the 22nd and 07:13 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 3451 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Chicago, 2000: Monday 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": "2000-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-23", "confidence": "determinate" } ], "quote": "In Chicago, Ramā Ekādaśī 2000 falls on Monday 23 October. Ekādaśī runs from 10:02 on Sun 22 Oct to 08:10 on Mon 23 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-10-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35142, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-10-23T08:10:27-05:00", "utc": "2000-10-23T13:10:27Z", "ms": 972306627259.7351 }, "end": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-23T08:10:27-05:00", "utc": "2000-10-23T13:10:27Z", "ms": 972306627259.7351 }, "end": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-23", "window": { "start": { "local": "2000-10-23T17:56:10-05:00", "utc": "2000-10-23T22:56:10Z", "ms": 972341769693.6676 }, "end": { "local": "2000-10-23T19:42:33-05:00", "utc": "2000-10-24T00:42:33Z", "ms": 972348153358.1714 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "2000-10-24", "window": { "start": { "local": "2000-10-24T17:54:44-05:00", "utc": "2000-10-24T22:54:44Z", "ms": 972428083978.6979 }, "end": { "local": "2000-10-24T19:41:29-05:00", "utc": "2000-10-25T00:41:29Z", "ms": 972434488609.7378 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:10 on Mon 23 Oct to 06:27 on Tue 24 Oct.", "fact": "2000-10-23T13:10:27Z → 2000-10-24T11:26:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:56–19:43 on the 23rd, 17:55–19:41 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 106 of 106 minutes on the 23rd and 0 of 107 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 35142 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Chicago, 2000: Monday 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": "2000-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-23", "confidence": "determinate" } ], "quote": "In Chicago, Govatsa Dvādaśī (Vasu Baras) 2000 falls on Monday 23 October. Dvādaśī runs from 08:10 on Mon 23 Oct to 06:27 on Tue 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33294, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 }, "end": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 }, "end": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-23", "window": { "start": { "local": "2000-10-23T17:56:10-05:00", "utc": "2000-10-23T22:56:10Z", "ms": 972341769693.6676 }, "end": { "local": "2000-10-23T19:42:33-05:00", "utc": "2000-10-24T00:42:33Z", "ms": 972348153358.1714 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2000-10-24", "window": { "start": { "local": "2000-10-24T17:54:44-05:00", "utc": "2000-10-24T22:54:44Z", "ms": 972428083978.6979 }, "end": { "local": "2000-10-24T19:41:29-05:00", "utc": "2000-10-25T00:41:29Z", "ms": 972434488609.7378 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:27 on Tue 24 Oct to 04:56 on Wed 25 Oct.", "fact": "2000-10-24T11:26:54Z → 2000-10-25T09:56:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:56–19:43 on the 23rd, 17:55–19:41 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 23rd and 107 of 107 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: unstated → only-day · margin 33294 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Chicago, 2000: Tuesday 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": "2000-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dīpadāna 2000 falls on Tuesday 24 October. Trayodaśī runs from 06:27 on Tue 24 Oct to 04:56 on Wed 25 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-10-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33294, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 }, "end": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-24T06:26:54-05:00", "utc": "2000-10-24T11:26:54Z", "ms": 972386813631.7156 }, "end": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-23", "window": { "start": { "local": "2000-10-23T17:56:10-05:00", "utc": "2000-10-23T22:56:10Z", "ms": 972341769693.6676 }, "end": { "local": "2000-10-23T19:42:33-05:00", "utc": "2000-10-24T00:42:33Z", "ms": 972348153358.1714 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2000-10-24", "window": { "start": { "local": "2000-10-24T17:54:44-05:00", "utc": "2000-10-24T22:54:44Z", "ms": 972428083978.6979 }, "end": { "local": "2000-10-24T19:41:29-05:00", "utc": "2000-10-25T00:41:29Z", "ms": 972434488609.7378 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:27 on Tue 24 Oct to 04:56 on Wed 25 Oct.", "fact": "2000-10-24T11:26:54Z → 2000-10-25T09:56:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:56–19:43 on the 23rd, 17:55–19:41 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 23rd and 107 of 107 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33294 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Tuesday 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": "2000-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Tuesday 24 October. Trayodaśī runs from 06:27 on Tue 24 Oct to 04:56 on Wed 25 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-10-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1932, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "end": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "end": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 } }, "kaala": "arunodaya", "days": [ { "local_date": "2000-10-25", "window": { "start": { "local": "2000-10-25T05:28:34-05:00", "utc": "2000-10-25T10:28:34Z", "ms": 972469714080.4576 }, "end": { "local": "2000-10-25T07:15:19-05:00", "utc": "2000-10-25T12:15:19Z", "ms": 972476118711.4976 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2000-10-26", "window": { "start": { "local": "2000-10-26T05:29:25-05:00", "utc": "2000-10-26T10:29:25Z", "ms": 972556165056.2126 }, "end": { "local": "2000-10-26T07:16:31-05:00", "utc": "2000-10-26T12:16:31Z", "ms": 972562590539.4885 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:56 on Wed 25 Oct to 03:45 on Thu 26 Oct.", "fact": "2000-10-25T09:56:23Z → 2000-10-26T08:44:38Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:29–07:15 on the 25th, 05:29–07:17 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 107 of 107 minutes on the 25th and 0 of 107 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 1932 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Chicago, 2000: Wednesday 25 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": "2000-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Naraka Caturdaśī (Choti Diwali) 2000 falls on Wednesday 25 October. Caturdaśī runs from 04:56 on Wed 25 Oct to 03:45 on Thu 26 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/shivaratri?on=2000-10-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9943, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "end": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-25T04:56:23-05:00", "utc": "2000-10-25T09:56:23Z", "ms": 972467782546.2972 }, "end": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 } }, "kaala": "nishita", "days": [ { "local_date": "2000-10-24", "window": { "start": { "local": "2000-10-25T00:11:01-05:00", "utc": "2000-10-25T05:11:01Z", "ms": 972450661345.0977 }, "end": { "local": "2000-10-25T00:59:01-05:00", "utc": "2000-10-25T05:59:01Z", "ms": 972453541345.0977 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-10-25", "window": { "start": { "local": "2000-10-26T00:10:55-05:00", "utc": "2000-10-26T05:10:55Z", "ms": 972537054977.2039 }, "end": { "local": "2000-10-26T00:58:55-05:00", "utc": "2000-10-26T05:58:55Z", "ms": 972539934977.2039 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:56 on Wed 25 Oct to 03:45 on Thu 26 Oct.", "fact": "2000-10-25T09:56:23Z → 2000-10-26T08:44:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 24th, 00:11–00:59 on the 25th.", "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 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9943 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Wednesday 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": "2000-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Wednesday 25 October. Caturdaśī runs from 04:56 on Wed 25 Oct to 03:45 on Thu 26 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-10-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26318, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "end": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "end": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-25", "window": { "start": { "local": "2000-10-25T17:53:19-05:00", "utc": "2000-10-25T22:53:19Z", "ms": 972514399414.9191 }, "end": { "local": "2000-10-25T19:40:25-05:00", "utc": "2000-10-26T00:40:25Z", "ms": 972520824898.195 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2000-10-26", "window": { "start": { "local": "2000-10-26T17:51:56-05:00", "utc": "2000-10-26T22:51:56Z", "ms": 972600716035.561 }, "end": { "local": "2000-10-26T19:39:22-05:00", "utc": "2000-10-27T00:39:22Z", "ms": 972607162250.2633 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 03:45 on Thu 26 Oct to 02:58 on Fri 27 Oct.", "fact": "2000-10-26T08:44:38Z → 2000-10-27T07:58:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:53–19:40 on the 25th, 17:52–19:39 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 107 minutes on the 25th and 107 of 107 on the 26th.", "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 26318 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Chicago, 2000: Thursday 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": "2000-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-26", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pūjā (Diwali) 2000 falls on Thursday 26 October. Amāvasyā runs from 03:45 on Thu 26 Oct to 02:58 on Fri 27 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7151, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "end": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-26T03:44:38-05:00", "utc": "2000-10-26T08:44:38Z", "ms": 972549878373.8063 }, "end": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 } }, "kaala": "nishita", "days": [ { "local_date": "2000-10-25", "window": { "start": { "local": "2000-10-26T00:10:55-05:00", "utc": "2000-10-26T05:10:55Z", "ms": 972537054977.2039 }, "end": { "local": "2000-10-26T00:58:55-05:00", "utc": "2000-10-26T05:58:55Z", "ms": 972539934977.2039 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-10-26", "window": { "start": { "local": "2000-10-27T00:10:49-05:00", "utc": "2000-10-27T05:10:49Z", "ms": 972623449340.6946 }, "end": { "local": "2000-10-27T00:58:49-05:00", "utc": "2000-10-27T05:58:49Z", "ms": 972626329340.6946 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 03:45 on Thu 26 Oct to 02:58 on Fri 27 Oct.", "fact": "2000-10-26T08:44:38Z → 2000-10-27T07:58:01Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 25th, 00:11–00:59 on the 26th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7151 s" }, { "step": "ruling", "text": "Kālī Pūjā, Chicago, 2000: Thursday 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": "2000-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-26", "confidence": "determinate" } ], "quote": "In Chicago, Kālī Pūjā 2000 falls on Thursday 26 October. Amāvasyā runs from 03:45 on Thu 26 Oct to 02:58 on Fri 27 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33128, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-27", "window": { "start": { "local": "2000-10-27T12:10:08-05:00", "utc": "2000-10-27T17:10:08Z", "ms": 972666608259.9229 }, "end": { "local": "2000-10-27T12:58:08-05:00", "utc": "2000-10-27T17:58:08Z", "ms": 972669488259.9229 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-10-28", "window": { "start": { "local": "2000-10-28T12:10:04-05:00", "utc": "2000-10-28T17:10:04Z", "ms": 972753003988.7844 }, "end": { "local": "2000-10-28T12:58:04-05:00", "utc": "2000-10-28T17:58:04Z", "ms": 972755883988.7844 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct.", "fact": "2000-10-27T07:58:01Z → 2000-10-28T07:42:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 27th, 12:10–12:58 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 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33128 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Chicago, 2000: Friday 27 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": "2000-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Govardhana Pūjā 2000 falls on Friday 27 October. Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25460, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-10-26", "window": { "start": { "local": "2000-10-26T17:51:56-05:00", "utc": "2000-10-26T22:51:56Z", "ms": 972600716035.561 }, "end": { "local": "2000-10-26T19:39:22-05:00", "utc": "2000-10-27T00:39:22Z", "ms": 972607162250.2633 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2000-10-27", "window": { "start": { "local": "2000-10-27T17:50:34-05:00", "utc": "2000-10-27T22:50:34Z", "ms": 972687033874.0177 }, "end": { "local": "2000-10-27T19:38:21-05:00", "utc": "2000-10-28T00:38:21Z", "ms": 972693500692.6115 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct.", "fact": "2000-10-27T07:58:01Z → 2000-10-28T07:42:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:52–19:39 on the 26th, 17:51–19:38 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 0 of 107 minutes on the 26th and 108 of 108 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 25460 s" }, { "step": "ruling", "text": "Bali Pūjā, Chicago, 2000: Friday 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": "2000-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Bali Pūjā 2000 falls on Friday 27 October. Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15582, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-27T02:58:01-05:00", "utc": "2000-10-27T07:58:01Z", "ms": 972633480673.718 }, "end": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 } }, "kaala": "purvahna", "days": [ { "local_date": "2000-10-27", "window": { "start": { "local": "2000-10-27T07:17:43-05:00", "utc": "2000-10-27T12:17:43Z", "ms": 972649062645.8281 }, "end": { "local": "2000-10-27T10:48:40-05:00", "utc": "2000-10-27T15:48:40Z", "ms": 972661719721.8914 } }, "covered_min": 211, "window_min": 211, "qualifies": true }, { "local_date": "2000-10-28", "window": { "start": { "local": "2000-10-28T07:18:55-05:00", "utc": "2000-10-28T12:18:55Z", "ms": 972735535013.4712 }, "end": { "local": "2000-10-28T10:49:01-05:00", "utc": "2000-10-28T15:49:01Z", "ms": 972748140997.0133 } }, "covered_min": 0, "window_min": 210, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct.", "fact": "2000-10-27T07:58:01Z → 2000-10-28T07:42:40Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:18–10:49 on the 27th, 07:19–10:49 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 211 of 211 minutes on the 27th and 0 of 210 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 15582 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Chicago, 2000: Friday 27 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": "2000-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Dyūta Pratipad 2000 falls on Friday 27 October. Pratipadā runs from 02:58 on Fri 27 Oct to 02:43 on Sat 28 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32780, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 }, "end": { "local": "2000-10-29T02:03:41-06:00", "utc": "2000-10-29T08:03:41Z", "ms": 972806620639.4559 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-28T02:42:40-05:00", "utc": "2000-10-28T07:42:40Z", "ms": 972718960364.1305 }, "end": { "local": "2000-10-29T02:03:41-06:00", "utc": "2000-10-29T08:03:41Z", "ms": 972806620639.4559 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-28", "window": { "start": { "local": "2000-10-28T12:10:04-05:00", "utc": "2000-10-28T17:10:04Z", "ms": 972753003988.7844 }, "end": { "local": "2000-10-28T12:58:04-05:00", "utc": "2000-10-28T17:58:04Z", "ms": 972755883988.7844 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-10-29", "window": { "start": { "local": "2000-10-29T11:10:00-06:00", "utc": "2000-10-29T17:10:00Z", "ms": 972839400482.1548 }, "end": { "local": "2000-10-29T11:58:00-06:00", "utc": "2000-10-29T17:58:00Z", "ms": 972842280482.1548 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 02:43 on Sat 28 Oct to 02:04 on Sun 29 Oct.", "fact": "2000-10-28T07:42:40Z → 2000-10-29T08:03:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 28th, 11:10–11:58 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 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32780 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Chicago, 2000: Saturday 28 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": "2000-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-28", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dvitīyā (Bhai Dooj) 2000 falls on Saturday 28 October. Dvitīyā runs from 02:43 on Sat 28 Oct to 02:04 on Sun 29 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23272, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-10-30T03:03:45-06:00", "utc": "2000-10-30T09:03:45Z", "ms": 972896625325.7764 }, "end": { "local": "2000-10-31T04:42:03-06:00", "utc": "2000-10-31T10:42:03Z", "ms": 972988923429.2902 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-30T03:03:45-06:00", "utc": "2000-10-30T09:03:45Z", "ms": 972896625325.7764 }, "end": { "local": "2000-10-31T04:42:03-06:00", "utc": "2000-10-31T10:42:03Z", "ms": 972988923429.2902 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-30", "window": { "start": { "local": "2000-10-30T11:09:58-06:00", "utc": "2000-10-30T17:09:58Z", "ms": 972925797747.8679 }, "end": { "local": "2000-10-30T11:57:58-06:00", "utc": "2000-10-30T17:57:58Z", "ms": 972928677747.8679 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-10-31", "window": { "start": { "local": "2000-10-31T11:09:56-06:00", "utc": "2000-10-31T17:09:56Z", "ms": 973012195793.6035 }, "end": { "local": "2000-10-31T11:57:56-06:00", "utc": "2000-10-31T17:57:56Z", "ms": 973015075793.6035 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:04 on Mon 30 Oct to 04:42 on Tue 31 Oct.", "fact": "2000-10-30T09:03:45Z → 2000-10-31T10:42:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 30th, 11:10–11:58 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 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23272 s" }, { "step": "ruling", "text": "Nāga Caturthī, Chicago, 2000: Monday 30 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": "2000-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-30", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Caturthī 2000 falls on Monday 30 October. Caturthī runs from 03:04 on Mon 30 Oct to 04:42 on Tue 31 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-10-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23272, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-10-30T03:03:45-06:00", "utc": "2000-10-30T09:03:45Z", "ms": 972896625325.7764 }, "end": { "local": "2000-10-31T04:42:03-06:00", "utc": "2000-10-31T10:42:03Z", "ms": 972988923429.2902 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-10-30T03:03:45-06:00", "utc": "2000-10-30T09:03:45Z", "ms": 972896625325.7764 }, "end": { "local": "2000-10-31T04:42:03-06:00", "utc": "2000-10-31T10:42:03Z", "ms": 972988923429.2902 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-10-30", "window": { "start": { "local": "2000-10-30T11:09:58-06:00", "utc": "2000-10-30T17:09:58Z", "ms": 972925797747.8679 }, "end": { "local": "2000-10-30T11:57:58-06:00", "utc": "2000-10-30T17:57:58Z", "ms": 972928677747.8679 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-10-31", "window": { "start": { "local": "2000-10-31T11:09:56-06:00", "utc": "2000-10-31T17:09:56Z", "ms": 973012195793.6035 }, "end": { "local": "2000-10-31T11:57:56-06:00", "utc": "2000-10-31T17:57:56Z", "ms": 973015075793.6035 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:04 on Mon 30 Oct to 04:42 on Tue 31 Oct.", "fact": "2000-10-30T09:03:45Z → 2000-10-31T10:42:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 30th, 11:10–11:58 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 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23272 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Monday 30 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": "2000-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-10-30", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Monday 30 October. Caturthī runs from 03:04 on Mon 30 Oct to 04:42 on Tue 31 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-10-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6195, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-11-01T06:53:08-06:00", "utc": "2000-11-01T12:53:08Z", "ms": 973083188423.1411 }, "end": { "local": "2000-11-02T09:26:40-06:00", "utc": "2000-11-02T15:26:40Z", "ms": 973178799722.2487 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-01T06:53:08-06:00", "utc": "2000-11-01T12:53:08Z", "ms": 973083188423.1411 }, "end": { "local": "2000-11-02T09:26:40-06:00", "utc": "2000-11-02T15:26:40Z", "ms": 973178799722.2487 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-01", "window": { "start": { "local": "2000-11-01T11:09:55-06:00", "utc": "2000-11-01T17:09:55Z", "ms": 973098594626.8213 }, "end": { "local": "2000-11-01T11:57:55-06:00", "utc": "2000-11-01T17:57:55Z", "ms": 973101474626.8213 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-11-02", "window": { "start": { "local": "2000-11-02T11:09:54-06:00", "utc": "2000-11-02T17:09:54Z", "ms": 973184994254.9001 }, "end": { "local": "2000-11-02T11:57:54-06:00", "utc": "2000-11-02T17:57:54Z", "ms": 973187874254.9001 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:53 on Wed 1 Nov to 09:27 on Thu 2 Nov.", "fact": "2000-11-01T12:53:08Z → 2000-11-02T15:26:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 1st, 11:10–11:58 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 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6195 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Chicago, 2000: Wednesday 1 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": "2000-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-01", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Chhath) 2000 falls on Wednesday 1 November. Ṣaṣṭhī runs from 06:53 on Wed 1 Nov to 09:27 on Thu 2 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 617, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2000-11-03T12:08:12-06:00", "utc": "2000-11-03T18:08:12Z", "ms": 973274892069.6942 }, "end": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-03T12:08:12-06:00", "utc": "2000-11-03T18:08:12Z", "ms": 973274892069.6942 }, "end": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-03", "window": { "start": { "local": "2000-11-03T11:09:55-06:00", "utc": "2000-11-03T17:09:55Z", "ms": 973271394684.962 }, "end": { "local": "2000-11-03T11:57:55-06:00", "utc": "2000-11-03T17:57:55Z", "ms": 973274274684.962 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-11-04", "window": { "start": { "local": "2000-11-04T11:09:56-06:00", "utc": "2000-11-04T17:09:56Z", "ms": 973357795923.8212 }, "end": { "local": "2000-11-04T11:57:56-06:00", "utc": "2000-11-04T17:57:56Z", "ms": 973360675923.8212 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:08 on Fri 3 Nov to 14:41 on Sat 4 Nov.", "fact": "2000-11-03T18:08:12Z → 2000-11-04T20:41:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 3rd, 11:10–11:58 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "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 617 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Chicago, 2000: Saturday 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": "2000-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-04", "confidence": "boundary" } ], "quote": "In Chicago, Gopāṣṭamī 2000 falls on Saturday 4 November. Aṣṭamī runs from 12:08 on Fri 3 Nov to 14:41 on Sat 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17371, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 }, "end": { "local": "2000-11-05T16:50:12-06:00", "utc": "2000-11-05T22:50:12Z", "ms": 973464612237.7811 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 }, "end": { "local": "2000-11-05T16:50:12-06:00", "utc": "2000-11-05T22:50:12Z", "ms": 973464612237.7811 } }, "kaala": "purvahna", "days": [ { "local_date": "2000-11-04", "window": { "start": { "local": "2000-11-04T06:27:27-06:00", "utc": "2000-11-04T12:27:27Z", "ms": 973340847242.1754 }, "end": { "local": "2000-11-04T09:51:46-06:00", "utc": "2000-11-04T15:51:46Z", "ms": 973353106363.2726 } }, "covered_min": 0, "window_min": 204, "qualifies": false }, { "local_date": "2000-11-05", "window": { "start": { "local": "2000-11-05T06:28:41-06:00", "utc": "2000-11-05T12:28:41Z", "ms": 973427320960.6476 }, "end": { "local": "2000-11-05T09:52:12-06:00", "utc": "2000-11-05T15:52:12Z", "ms": 973439532305.5403 } }, "covered_min": 204, "window_min": 204, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 14:41 on Sat 4 Nov to 16:50 on Sun 5 Nov.", "fact": "2000-11-04T20:41:18Z → 2000-11-05T22:50:12Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:27–09:52 on the 4th, 06:29–09:52 on the 5th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 204 minutes on the 4th and 204 of 204 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17371 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Chicago, 2000: Sunday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-05", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Navamī (Amla Navami) 2000 falls on Sunday 5 November. Navamī runs from 14:41 on Sat 4 Nov to 16:50 on Sun 5 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9802, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 }, "end": { "local": "2000-11-05T16:50:12-06:00", "utc": "2000-11-05T22:50:12Z", "ms": 973464612237.7811 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-04T14:41:18-06:00", "utc": "2000-11-04T20:41:18Z", "ms": 973370477753.2734 }, "end": { "local": "2000-11-05T16:50:12-06:00", "utc": "2000-11-05T22:50:12Z", "ms": 973464612237.7811 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-04", "window": { "start": { "local": "2000-11-04T11:09:56-06:00", "utc": "2000-11-04T17:09:56Z", "ms": 973357795923.8212 }, "end": { "local": "2000-11-04T11:57:56-06:00", "utc": "2000-11-04T17:57:56Z", "ms": 973360675923.8212 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-11-05", "window": { "start": { "local": "2000-11-05T11:09:58-06:00", "utc": "2000-11-05T17:09:58Z", "ms": 973444197977.9866 }, "end": { "local": "2000-11-05T11:57:58-06:00", "utc": "2000-11-05T17:57:58Z", "ms": 973447077977.9866 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 14:41 on Sat 4 Nov to 16:50 on Sun 5 Nov.", "fact": "2000-11-04T20:41:18Z → 2000-11-05T22:50:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 4th, 11:10–11:58 on the 5th.", "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 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9802 s" }, { "step": "ruling", "text": "Durgā Navamī, Chicago, 2000: Sunday 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": "2000-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-05", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Navamī 2000 falls on Sunday 5 November. Navamī runs from 14:41 on Sat 4 Nov to 16:50 on Sun 5 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-11-07", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40908, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-11-06T18:22:29-06:00", "utc": "2000-11-07T00:22:29Z", "ms": 973556548950.2863 }, "end": { "local": "2000-11-07T19:10:35-06:00", "utc": "2000-11-08T01:10:35Z", "ms": 973645834634.2651 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-06T18:22:29-06:00", "utc": "2000-11-07T00:22:29Z", "ms": 973556548950.2863 }, "end": { "local": "2000-11-07T19:10:35-06:00", "utc": "2000-11-08T01:10:35Z", "ms": 973645834634.2651 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-11-07", "window": { "start": { "local": "2000-11-07T06:31:09-06:00", "utc": "2000-11-07T12:31:09Z", "ms": 973600268560.0559 }, "end": { "local": "2000-11-07T06:31:09-06:00", "utc": "2000-11-07T12:31:09Z", "ms": 973600268560.0559 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-11-08", "window": { "start": { "local": "2000-11-08T06:32:22-06:00", "utc": "2000-11-08T12:32:22Z", "ms": 973686742387.677 }, "end": { "local": "2000-11-08T06:32:22-06:00", "utc": "2000-11-08T12:32:22Z", "ms": 973686742387.677 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:22 on Mon 6 Nov to 19:11 on Tue 7 Nov.", "fact": "2000-11-07T00:22:29Z → 2000-11-08T01:10:35Z" }, { "step": "kaala", "text": "Sunrise is at 06:31 on the 7th and 06:32 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 40908 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Chicago, 2000: Tuesday 7 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": "2000-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-07", "confidence": "determinate" } ], "quote": "In Chicago, Prabodhinī Ekādaśī 2000 falls on Tuesday 7 November. Ekādaśī runs from 18:22 on Mon 6 Nov to 19:11 on Tue 7 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-11-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-11-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-09", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 148, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-11-08T19:12:08-06:00", "utc": "2000-11-09T01:12:08Z", "ms": 973732328414.7734 }, "end": { "local": "2000-11-09T18:29:20-06:00", "utc": "2000-11-10T00:29:20Z", "ms": 973816160331.0717 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-08T19:12:08-06:00", "utc": "2000-11-09T01:12:08Z", "ms": 973732328414.7734 }, "end": { "local": "2000-11-09T18:29:20-06:00", "utc": "2000-11-10T00:29:20Z", "ms": 973816160331.0717 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-11-08", "window": { "start": { "local": "2000-11-08T16:35:56-06:00", "utc": "2000-11-08T22:35:56Z", "ms": 973722955798.6577 }, "end": { "local": "2000-11-08T18:27:37-06:00", "utc": "2000-11-09T00:27:37Z", "ms": 973729657185.1702 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "2000-11-09", "window": { "start": { "local": "2000-11-09T16:34:53-06:00", "utc": "2000-11-09T22:34:53Z", "ms": 973809292739.1105 }, "end": { "local": "2000-11-09T18:26:52-06:00", "utc": "2000-11-10T00:26:52Z", "ms": 973816012368.7964 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:12 on Wed 8 Nov to 18:29 on Thu 9 Nov.", "fact": "2000-11-09T01:12:08Z → 2000-11-10T00:29:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:36–18:28 on the 8th, 16:35–18:27 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 112 minutes on the 8th and 112 of 112 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 148 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Thursday 9 November.", "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": "2000-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-09", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Thursday 9 November. Trayodaśī runs from 19:12 on Wed 8 Nov to 18:29 on Thu 9 Nov and covers all of pradoṣa that evening. It is 2 min 28 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-11-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21798, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-11-10T17:07:39-06:00", "utc": "2000-11-10T23:07:39Z", "ms": 973897659350.042 }, "end": { "local": "2000-11-11T15:14:37-06:00", "utc": "2000-11-11T21:14:37Z", "ms": 973977276894.4935 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-10T17:07:39-06:00", "utc": "2000-11-10T23:07:39Z", "ms": 973897659350.042 }, "end": { "local": "2000-11-11T15:14:37-06:00", "utc": "2000-11-11T21:14:37Z", "ms": 973977276894.4935 } }, "kaala": "nishita", "days": [ { "local_date": "2000-11-10", "window": { "start": { "local": "2000-11-10T23:10:58-06:00", "utc": "2000-11-11T05:10:58Z", "ms": 973919457532.926 }, "end": { "local": "2000-11-10T23:58:58-06:00", "utc": "2000-11-11T05:58:58Z", "ms": 973922337532.926 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-11-11", "window": { "start": { "local": "2000-11-11T23:11:05-06:00", "utc": "2000-11-12T05:11:05Z", "ms": 974005864550.4572 }, "end": { "local": "2000-11-11T23:59:05-06:00", "utc": "2000-11-12T05:59:05Z", "ms": 974008744550.4572 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:08 on Fri 10 Nov to 15:15 on Sat 11 Nov.", "fact": "2000-11-10T23:07:39Z → 2000-11-11T21:14:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 10th, 23:11–23:59 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 21798 s" }, { "step": "ruling", "text": "Rāsayātrā, Chicago, 2000: Friday 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": "2000-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-10", "confidence": "determinate" } ], "quote": "In Chicago, Rāsayātrā 2000 falls on Friday 10 November. Pūrṇimā runs from 17:08 on Fri 10 Nov to 15:15 on Sat 11 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11769, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-11-10T17:07:39-06:00", "utc": "2000-11-10T23:07:39Z", "ms": 973897659350.042 }, "end": { "local": "2000-11-11T15:14:37-06:00", "utc": "2000-11-11T21:14:37Z", "ms": 973977276894.4935 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2000-11-10T17:07:39-06:00", "utc": "2000-11-10T23:07:39Z", "ms": 973897659350.042 }, "end": { "local": "2000-11-11T15:14:37-06:00", "utc": "2000-11-11T21:14:37Z", "ms": 973977276894.4935 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-10", "window": { "start": { "local": "2000-11-10T11:10:21-06:00", "utc": "2000-11-10T17:10:21Z", "ms": 973876220687.6667 }, "end": { "local": "2000-11-10T11:58:21-06:00", "utc": "2000-11-10T17:58:21Z", "ms": 973879100687.6667 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-11-11", "window": { "start": { "local": "2000-11-11T11:10:28-06:00", "utc": "2000-11-11T17:10:28Z", "ms": 973962627756.4773 }, "end": { "local": "2000-11-11T11:58:28-06:00", "utc": "2000-11-11T17:58:28Z", "ms": 973965507756.4773 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:08 on Fri 10 Nov to 15:15 on Sat 11 Nov.", "fact": "2000-11-10T23:07:39Z → 2000-11-11T21:14:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 10th, 11:10–11:58 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 11769 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Chicago, 2000: Saturday 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": "2000-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Kārtikī Pūrṇimā 2000 falls on Saturday 11 November. Pūrṇimā runs from 17:08 on Fri 10 Nov to 15:15 on Sat 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-11-14", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36172, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-11-14T07:51:40-06:00", "utc": "2000-11-14T13:51:40Z", "ms": 974209900037.0591 }, "end": { "local": "2000-11-15T05:15:34-06:00", "utc": "2000-11-15T11:15:34Z", "ms": 974286933659.4631 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-14T07:51:40-06:00", "utc": "2000-11-14T13:51:40Z", "ms": 974209900037.0591 }, "end": { "local": "2000-11-15T05:15:34-06:00", "utc": "2000-11-15T11:15:34Z", "ms": 974286933659.4631 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-11-13", "window": { "start": { "local": "2000-11-13T18:18:53-06:00", "utc": "2000-11-14T00:18:53Z", "ms": 974161133251.9554 }, "end": { "local": "2000-11-13T18:18:53-06:00", "utc": "2000-11-14T00:18:53Z", "ms": 974161133251.9554 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-11-14", "window": { "start": { "local": "2000-11-14T19:12:42-06:00", "utc": "2000-11-15T01:12:42Z", "ms": 974250761641.7394 }, "end": { "local": "2000-11-14T19:12:42-06:00", "utc": "2000-11-15T01:12:42Z", "ms": 974250761641.7394 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:52 on Tue 14 Nov to 05:16 on Wed 15 Nov.", "fact": "2000-11-14T13:51:40Z → 2000-11-15T11:15:34Z" }, { "step": "kaala", "text": "Moonrise is at 18:19 on the 13th and 19:13 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 36172 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Tuesday 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": "2000-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-14", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Tuesday 14 November. Caturthī runs from 07:52 on Tue 14 Nov to 05:16 on Wed 15 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-11-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-11-21", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36140, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-11-20T17:45:05-06:00", "utc": "2000-11-20T23:45:05Z", "ms": 974763904595.5885 }, "end": { "local": "2000-11-21T16:50:29-06:00", "utc": "2000-11-21T22:50:29Z", "ms": 974847028686.4519 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-20T17:45:05-06:00", "utc": "2000-11-20T23:45:05Z", "ms": 974763904595.5885 }, "end": { "local": "2000-11-21T16:50:29-06:00", "utc": "2000-11-21T22:50:29Z", "ms": 974847028686.4519 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-11-20", "window": { "start": { "local": "2000-11-20T06:46:58-06:00", "utc": "2000-11-20T12:46:58Z", "ms": 974724418163.444 }, "end": { "local": "2000-11-20T06:46:58-06:00", "utc": "2000-11-20T12:46:58Z", "ms": 974724418163.444 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-11-21", "window": { "start": { "local": "2000-11-21T06:48:09-06:00", "utc": "2000-11-21T12:48:09Z", "ms": 974810889184.7788 }, "end": { "local": "2000-11-21T06:48:09-06:00", "utc": "2000-11-21T12:48:09Z", "ms": 974810889184.7788 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:45 on Mon 20 Nov to 16:50 on Tue 21 Nov.", "fact": "2000-11-20T23:45:05Z → 2000-11-21T22:50:29Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 20th and 06:48 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 36140 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Chicago, 2000: Tuesday 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": "2000-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-21", "confidence": "determinate" } ], "quote": "In Chicago, Utpannā Ekādaśī 2000 falls on Tuesday 21 November. Ekādaśī runs from 17:45 on Mon 20 Nov to 16:50 on Tue 21 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-11-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-11-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 406, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-11-22T16:17:19-06:00", "utc": "2000-11-22T22:17:19Z", "ms": 974931438586.2885 }, "end": { "local": "2000-11-23T16:07:57-06:00", "utc": "2000-11-23T22:07:57Z", "ms": 975017276862.6104 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-22T16:17:19-06:00", "utc": "2000-11-22T22:17:19Z", "ms": 974931438586.2885 }, "end": { "local": "2000-11-23T16:07:57-06:00", "utc": "2000-11-23T22:07:57Z", "ms": 975017276862.6104 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-11-22", "window": { "start": { "local": "2000-11-22T16:24:04-06:00", "utc": "2000-11-22T22:24:04Z", "ms": 974931844410.8948 }, "end": { "local": "2000-11-22T18:19:36-06:00", "utc": "2000-11-23T00:19:36Z", "ms": 974938775772.4232 } }, "covered_min": 116, "window_min": 116, "qualifies": true }, { "local_date": "2000-11-23", "window": { "start": { "local": "2000-11-23T16:23:29-06:00", "utc": "2000-11-23T22:23:29Z", "ms": 975018208935.8127 }, "end": { "local": "2000-11-23T18:19:14-06:00", "utc": "2000-11-24T00:19:14Z", "ms": 975025154267.9792 } }, "covered_min": 0, "window_min": 116, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:17 on Wed 22 Nov to 16:08 on Thu 23 Nov.", "fact": "2000-11-22T22:17:19Z → 2000-11-23T22:07:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:24–18:20 on the 22nd, 16:23–18:19 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 116 of 116 minutes on the 22nd and 0 of 116 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 406 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Wednesday 22 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": "2000-11-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-22", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Wednesday 22 November. Trayodaśī runs from 16:17 on Wed 22 Nov to 16:08 on Thu 23 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-11-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-11-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24526, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-11-23T16:07:57-06:00", "utc": "2000-11-23T22:07:57Z", "ms": 975017276862.6104 }, "end": { "local": "2000-11-24T16:25:06-06:00", "utc": "2000-11-24T22:25:06Z", "ms": 975104705930.4928 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-23T16:07:57-06:00", "utc": "2000-11-23T22:07:57Z", "ms": 975017276862.6104 }, "end": { "local": "2000-11-24T16:25:06-06:00", "utc": "2000-11-24T22:25:06Z", "ms": 975104705930.4928 } }, "kaala": "nishita", "days": [ { "local_date": "2000-11-23", "window": { "start": { "local": "2000-11-23T23:13:34-06:00", "utc": "2000-11-24T05:13:34Z", "ms": 975042813931.4373 }, "end": { "local": "2000-11-24T00:01:34-06:00", "utc": "2000-11-24T06:01:34Z", "ms": 975045693931.4373 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-11-24", "window": { "start": { "local": "2000-11-24T23:13:52-06:00", "utc": "2000-11-25T05:13:52Z", "ms": 975129231603.3903 }, "end": { "local": "2000-11-25T00:01:52-06:00", "utc": "2000-11-25T06:01:52Z", "ms": 975132111603.3903 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:08 on Thu 23 Nov to 16:25 on Fri 24 Nov.", "fact": "2000-11-23T22:07:57Z → 2000-11-24T22:25:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:14–00:02 on the 23rd, 23:14–00:02 on the 24th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 23rd and 0 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 24526 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Thursday 23 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": "2000-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-23", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Thursday 23 November. Caturdaśī runs from 16:08 on Thu 23 Nov to 16:25 on Fri 24 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-11-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-11-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36636, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-11-28T22:29:49-06:00", "utc": "2000-11-29T04:29:49Z", "ms": 975472188606.5931 }, "end": { "local": "2000-11-30T01:04:45-06:00", "utc": "2000-11-30T07:04:45Z", "ms": 975567884932.4707 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-28T22:29:49-06:00", "utc": "2000-11-29T04:29:49Z", "ms": 975472188606.5931 }, "end": { "local": "2000-11-30T01:04:45-06:00", "utc": "2000-11-30T07:04:45Z", "ms": 975567884932.4707 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-29", "window": { "start": { "local": "2000-11-29T11:14:58-06:00", "utc": "2000-11-29T17:14:58Z", "ms": 975518098498.5884 }, "end": { "local": "2000-11-29T12:02:58-06:00", "utc": "2000-11-29T18:02:58Z", "ms": 975520978498.5884 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-11-30", "window": { "start": { "local": "2000-11-30T11:15:21-06:00", "utc": "2000-11-30T17:15:21Z", "ms": 975604520818.746 }, "end": { "local": "2000-11-30T12:03:21-06:00", "utc": "2000-11-30T18:03:21Z", "ms": 975607400818.746 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:30 on Tue 28 Nov to 01:05 on Thu 30 Nov.", "fact": "2000-11-29T04:29:49Z → 2000-11-30T07:04:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 29th, 11:15–12:03 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 0 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 36636 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Wednesday 29 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": "2000-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-29", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Wednesday 29 November. Caturthī runs from 22:30 on Tue 28 Nov to 01:05 on Thu 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-11-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26760, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2000-11-30T01:04:45-06:00", "utc": "2000-11-30T07:04:45Z", "ms": 975567884932.4707 }, "end": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-11-30T01:04:45-06:00", "utc": "2000-11-30T07:04:45Z", "ms": 975567884932.4707 }, "end": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-11-30", "window": { "start": { "local": "2000-11-30T11:15:21-06:00", "utc": "2000-11-30T17:15:21Z", "ms": 975604520818.746 }, "end": { "local": "2000-11-30T12:03:21-06:00", "utc": "2000-11-30T18:03:21Z", "ms": 975607400818.746 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-12-01", "window": { "start": { "local": "2000-12-01T11:15:44-06:00", "utc": "2000-12-01T17:15:44Z", "ms": 975690943779.5051 }, "end": { "local": "2000-12-01T12:03:44-06:00", "utc": "2000-12-01T18:03:44Z", "ms": 975693823779.5051 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:05 on Thu 30 Nov to 03:50 on Fri 1 Dec.", "fact": "2000-11-30T07:04:45Z → 2000-12-01T09:49:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 30th, 11:16–12:04 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 48 of 48 minutes on the 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26760 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Chicago, 2000: Thursday 30 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-11-30", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī (Mārgaśīrṣa) 2000 falls on Thursday 30 November. Pañcamī runs from 01:05 on Thu 30 Nov to 03:50 on Fri 1 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17089, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 }, "end": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 }, "end": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-12-01", "window": { "start": { "local": "2000-12-01T11:15:44-06:00", "utc": "2000-12-01T17:15:44Z", "ms": 975690943779.5051 }, "end": { "local": "2000-12-01T12:03:44-06:00", "utc": "2000-12-01T18:03:44Z", "ms": 975693823779.5051 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-12-02", "window": { "start": { "local": "2000-12-02T11:16:07-06:00", "utc": "2000-12-02T17:16:07Z", "ms": 975777367357.17 }, "end": { "local": "2000-12-02T12:04:07-06:00", "utc": "2000-12-02T18:04:07Z", "ms": 975780247357.17 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:50 on Fri 1 Dec to 06:31 on Sat 2 Dec.", "fact": "2000-12-01T09:49:43Z → 2000-12-02T12:31:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 1st, 11:16–12:04 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 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17089 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Chicago, 2000: Friday 1 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": "2000-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-01", "confidence": "determinate" } ], "quote": "In Chicago, Campā Ṣaṣṭhī 2000 falls on Friday 1 December. Ṣaṣṭhī runs from 03:50 on Fri 1 Dec to 06:31 on Sat 2 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17089, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 }, "end": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-01T03:49:43-06:00", "utc": "2000-12-01T09:49:43Z", "ms": 975664183287.6279 }, "end": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-12-01", "window": { "start": { "local": "2000-12-01T11:15:44-06:00", "utc": "2000-12-01T17:15:44Z", "ms": 975690943779.5051 }, "end": { "local": "2000-12-01T12:03:44-06:00", "utc": "2000-12-01T18:03:44Z", "ms": 975693823779.5051 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-12-02", "window": { "start": { "local": "2000-12-02T11:16:07-06:00", "utc": "2000-12-02T17:16:07Z", "ms": 975777367357.17 }, "end": { "local": "2000-12-02T12:04:07-06:00", "utc": "2000-12-02T18:04:07Z", "ms": 975780247357.17 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:50 on Fri 1 Dec to 06:31 on Sat 2 Dec.", "fact": "2000-12-01T09:49:43Z → 2000-12-02T12:31:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 1st, 11:16–12:04 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 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17089 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Chicago, 2000: Friday 1 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": "2000-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-01", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī 2000 falls on Friday 1 December. Ṣaṣṭhī runs from 03:50 on Fri 1 Dec to 06:31 on Sat 2 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8504, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 }, "end": { "local": "2000-12-03T08:54:47-06:00", "utc": "2000-12-03T14:54:47Z", "ms": 975855287377.4618 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-02T06:31:18-06:00", "utc": "2000-12-02T12:31:18Z", "ms": 975760278027.5887 }, "end": { "local": "2000-12-03T08:54:47-06:00", "utc": "2000-12-03T14:54:47Z", "ms": 975855287377.4618 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-12-02", "window": { "start": { "local": "2000-12-02T11:16:07-06:00", "utc": "2000-12-02T17:16:07Z", "ms": 975777367357.17 }, "end": { "local": "2000-12-02T12:04:07-06:00", "utc": "2000-12-02T18:04:07Z", "ms": 975780247357.17 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2000-12-03", "window": { "start": { "local": "2000-12-03T11:16:32-06:00", "utc": "2000-12-03T17:16:32Z", "ms": 975863791527.4406 }, "end": { "local": "2000-12-03T12:04:32-06:00", "utc": "2000-12-03T18:04:32Z", "ms": 975866671527.4406 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 06:31 on Sat 2 Dec to 08:55 on Sun 3 Dec.", "fact": "2000-12-02T12:31:18Z → 2000-12-03T14:54:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 2nd, 11:17–12:05 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 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: purvaviddha → only-day · margin 8504 s" }, { "step": "ruling", "text": "Mitra Saptamī, Chicago, 2000: Saturday 2 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": "2000-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-02", "confidence": "determinate" } ], "quote": "In Chicago, Mitra Saptamī 2000 falls on Saturday 2 December. Saptamī runs from 06:31 on Sat 2 Dec to 08:55 on Sun 3 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/ekadashi?on=2000-12-07", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16895, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-12-06T12:16:21-06:00", "utc": "2000-12-06T18:16:21Z", "ms": 976126580656.2762 }, "end": { "local": "2000-12-07T11:46:51-06:00", "utc": "2000-12-07T17:46:51Z", "ms": 976211210757.9825 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-06T12:16:21-06:00", "utc": "2000-12-06T18:16:21Z", "ms": 976126580656.2762 }, "end": { "local": "2000-12-07T11:46:51-06:00", "utc": "2000-12-07T17:46:51Z", "ms": 976211210757.9825 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-12-06", "window": { "start": { "local": "2000-12-06T07:04:20-06:00", "utc": "2000-12-06T13:04:20Z", "ms": 976107859791.3564 }, "end": { "local": "2000-12-06T07:04:20-06:00", "utc": "2000-12-06T13:04:20Z", "ms": 976107859791.3564 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2000-12-07", "window": { "start": { "local": "2000-12-07T07:05:15-06:00", "utc": "2000-12-07T13:05:15Z", "ms": 976194315474.0483 }, "end": { "local": "2000-12-07T07:05:15-06:00", "utc": "2000-12-07T13:05:15Z", "ms": 976194315474.0483 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:16 on Wed 6 Dec to 11:47 on Thu 7 Dec.", "fact": "2000-12-06T18:16:21Z → 2000-12-07T17:46:51Z" }, { "step": "kaala", "text": "Sunrise is at 07:04 on the 6th and 07:05 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16895 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Chicago, 2000: Thursday 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": "2000-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-07", "confidence": "determinate" } ], "quote": "In Chicago, Mokṣadā Ekādaśī 2000 falls on Thursday 7 December. Ekādaśī runs from 12:16 on Wed 6 Dec to 11:47 on Thu 7 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-12-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1163, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2000-12-07T11:46:51-06:00", "utc": "2000-12-07T17:46:51Z", "ms": 976211210757.9825 }, "end": { "local": "2000-12-08T10:29:55-06:00", "utc": "2000-12-08T16:29:55Z", "ms": 976292995488.8789 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-07T11:46:51-06:00", "utc": "2000-12-07T17:46:51Z", "ms": 976211210757.9825 }, "end": { "local": "2000-12-08T10:29:55-06:00", "utc": "2000-12-08T16:29:55Z", "ms": 976292995488.8789 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-12-07", "window": { "start": { "local": "2000-12-07T11:18:14-06:00", "utc": "2000-12-07T17:18:14Z", "ms": 976209493632.1051 }, "end": { "local": "2000-12-07T12:06:14-06:00", "utc": "2000-12-07T18:06:14Z", "ms": 976212373632.1051 } }, "covered_min": 19, "window_min": 48, "qualifies": true }, { "local_date": "2000-12-08", "window": { "start": { "local": "2000-12-08T11:18:40-06:00", "utc": "2000-12-08T17:18:40Z", "ms": 976295920386.4266 }, "end": { "local": "2000-12-08T12:06:40-06:00", "utc": "2000-12-08T18:06:40Z", "ms": 976298800386.4266 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:47 on Thu 7 Dec to 10:30 on Fri 8 Dec.", "fact": "2000-12-07T17:46:51Z → 2000-12-08T16:29:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 7th, 11:19–12:07 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 19 of 48 minutes on the 7th and 0 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 1163 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Chicago, 2000: Thursday 7 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": "2000-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-07", "confidence": "determinate" } ], "quote": "In Chicago, Akhaṇḍa Dvādaśī 2000 falls on Thursday 7 December. Dvādaśī runs from 11:47 on Thu 7 Dec to 10:30 on Fri 8 Dec and covers 19 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/pradosha-vrata?on=2000-12-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20956, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-12-08T10:29:55-06:00", "utc": "2000-12-08T16:29:55Z", "ms": 976292995488.8789 }, "end": { "local": "2000-12-09T08:31:27-06:00", "utc": "2000-12-09T14:31:27Z", "ms": 976372286856.0862 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-08T10:29:55-06:00", "utc": "2000-12-08T16:29:55Z", "ms": 976292995488.8789 }, "end": { "local": "2000-12-09T08:31:27-06:00", "utc": "2000-12-09T14:31:27Z", "ms": 976372286856.0862 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-12-08", "window": { "start": { "local": "2000-12-08T16:19:11-06:00", "utc": "2000-12-08T22:19:11Z", "ms": 976313951073.2373 }, "end": { "local": "2000-12-08T18:17:34-06:00", "utc": "2000-12-09T00:17:34Z", "ms": 976321053918.9436 } }, "covered_min": 118, "window_min": 118, "qualifies": true }, { "local_date": "2000-12-09", "window": { "start": { "local": "2000-12-09T16:19:13-06:00", "utc": "2000-12-09T22:19:13Z", "ms": 976400352745.8418 }, "end": { "local": "2000-12-09T18:17:42-06:00", "utc": "2000-12-10T00:17:42Z", "ms": 976407462189.53 } }, "covered_min": 0, "window_min": 118, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:30 on Fri 8 Dec to 08:31 on Sat 9 Dec.", "fact": "2000-12-08T16:29:55Z → 2000-12-09T14:31:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:18 on the 8th, 16:19–18:18 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 118 of 118 minutes on the 8th and 0 of 118 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 20956 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2000: Friday 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": "2000-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-08", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2000 falls on Friday 8 December. Trayodaśī runs from 10:30 on Fri 8 Dec to 08:31 on Sat 9 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-12-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31496, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2000-12-10T05:59:22-06:00", "utc": "2000-12-10T11:59:22Z", "ms": 976449562282.2169 }, "end": { "local": "2000-12-11T03:02:48-06:00", "utc": "2000-12-11T09:02:48Z", "ms": 976525368047.7473 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-10T05:59:22-06:00", "utc": "2000-12-10T11:59:22Z", "ms": 976449562282.2169 }, "end": { "local": "2000-12-11T03:02:48-06:00", "utc": "2000-12-11T09:02:48Z", "ms": 976525368047.7473 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-12-09", "window": { "start": { "local": "2000-12-09T16:19:13-06:00", "utc": "2000-12-09T22:19:13Z", "ms": 976400352745.8418 }, "end": { "local": "2000-12-09T18:17:42-06:00", "utc": "2000-12-10T00:17:42Z", "ms": 976407462189.53 } }, "covered_min": 0, "window_min": 118, "qualifies": false }, { "local_date": "2000-12-10", "window": { "start": { "local": "2000-12-10T16:19:17-06:00", "utc": "2000-12-10T22:19:17Z", "ms": 976486756807.3365 }, "end": { "local": "2000-12-10T18:17:52-06:00", "utc": "2000-12-11T00:17:52Z", "ms": 976493872316.2516 } }, "covered_min": 119, "window_min": 119, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 05:59 on Sun 10 Dec to 03:03 on Mon 11 Dec.", "fact": "2000-12-10T11:59:22Z → 2000-12-11T09:02:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:18 on the 9th, 16:19–18:18 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 118 minutes on the 9th and 119 of 119 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 31496 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Chicago, 2000: Sunday 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": "2000-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-10", "confidence": "determinate" } ], "quote": "In Chicago, Dattātreyotpatti (Datta Jayanti) 2000 falls on Sunday 10 December. Pūrṇimā runs from 05:59 on Sun 10 Dec to 03:03 on Mon 11 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/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": "/chicago/festivals/2000/sankashta-chaturthi?on=2000-12-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6336, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-12-13T17:20:27-06:00", "utc": "2000-12-13T23:20:27Z", "ms": 976749626947.0566 }, "end": { "local": "2000-12-14T14:18:14-06:00", "utc": "2000-12-14T20:18:14Z", "ms": 976825093637.6821 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-13T17:20:27-06:00", "utc": "2000-12-13T23:20:27Z", "ms": 976749626947.0566 }, "end": { "local": "2000-12-14T14:18:14-06:00", "utc": "2000-12-14T20:18:14Z", "ms": 976825093637.6821 } }, "kaala": "moonrise", "days": [ { "local_date": "2000-12-13", "window": { "start": { "local": "2000-12-13T19:06:03-06:00", "utc": "2000-12-14T01:06:03Z", "ms": 976755963112.5677 }, "end": { "local": "2000-12-13T19:06:03-06:00", "utc": "2000-12-14T01:06:03Z", "ms": 976755963112.5677 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-12-14", "window": { "start": { "local": "2000-12-14T20:18:23-06:00", "utc": "2000-12-15T02:18:23Z", "ms": 976846703160.0214 }, "end": { "local": "2000-12-14T20:18:23-06:00", "utc": "2000-12-15T02:18:23Z", "ms": 976846703160.0214 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:20 on Wed 13 Dec to 14:18 on Thu 14 Dec.", "fact": "2000-12-13T23:20:27Z → 2000-12-14T20:18:14Z" }, { "step": "kaala", "text": "Moonrise is at 19:06 on the 13th and 20:18 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 6336 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2000: Wednesday 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": "2000-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-13", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2000 falls on Wednesday 13 December. Caturthī runs from 17:20 on Wed 13 Dec to 14:18 on Thu 14 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/sankashta-chaturthi?on=2000-12-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/ekadashi?on=2000-12-20", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6569, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2000-12-20T05:06:54-06:00", "utc": "2000-12-20T11:06:54Z", "ms": 977310413828.509 }, "end": { "local": "2000-12-21T05:25:51-06:00", "utc": "2000-12-21T11:25:51Z", "ms": 977397951231.1682 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-20T05:06:54-06:00", "utc": "2000-12-20T11:06:54Z", "ms": 977310413828.509 }, "end": { "local": "2000-12-21T05:25:51-06:00", "utc": "2000-12-21T11:25:51Z", "ms": 977397951231.1682 } }, "kaala": "sunrise", "days": [ { "local_date": "2000-12-20", "window": { "start": { "local": "2000-12-20T07:14:49-06:00", "utc": "2000-12-20T13:14:49Z", "ms": 977318089264.8363 }, "end": { "local": "2000-12-20T07:14:49-06:00", "utc": "2000-12-20T13:14:49Z", "ms": 977318089264.8363 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2000-12-21", "window": { "start": { "local": "2000-12-21T07:15:20-06:00", "utc": "2000-12-21T13:15:20Z", "ms": 977404520267.7462 }, "end": { "local": "2000-12-21T07:15:20-06:00", "utc": "2000-12-21T13:15:20Z", "ms": 977404520267.7462 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:07 on Wed 20 Dec to 05:26 on Thu 21 Dec.", "fact": "2000-12-20T11:06:54Z → 2000-12-21T11:25:51Z" }, { "step": "kaala", "text": "Sunrise is at 07:15 on the 20th and 07:15 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6569 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Chicago, 2000: Wednesday 20 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": "2000-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-20", "confidence": "determinate" } ], "quote": "In Chicago, Saphalā Ekādaśī 2000 falls on Wednesday 20 December. Ekādaśī runs from 05:07 on Wed 20 Dec to 05:26 on Thu 21 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2000/ekadashi?on=2000-12-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/pradosha-vrata?on=2000-12-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31870, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2000-12-22T06:15:06-06:00", "utc": "2000-12-22T12:15:06Z", "ms": 977487306497.1438 }, "end": { "local": "2000-12-23T07:32:33-06:00", "utc": "2000-12-23T13:32:33Z", "ms": 977578352892.4607 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-22T06:15:06-06:00", "utc": "2000-12-22T12:15:06Z", "ms": 977487306497.1438 }, "end": { "local": "2000-12-23T07:32:33-06:00", "utc": "2000-12-23T13:32:33Z", "ms": 977578352892.4607 } }, "kaala": "pradosha", "days": [ { "local_date": "2000-12-22", "window": { "start": { "local": "2000-12-22T16:23:09-06:00", "utc": "2000-12-22T22:23:09Z", "ms": 977523788593.3629 }, "end": { "local": "2000-12-22T18:22:14-06:00", "utc": "2000-12-23T00:22:14Z", "ms": 977530933576.8799 } }, "covered_min": 119, "window_min": 119, "qualifies": true }, { "local_date": "2000-12-23", "window": { "start": { "local": "2000-12-23T16:23:43-06:00", "utc": "2000-12-23T22:23:43Z", "ms": 977610222537.3832 }, "end": { "local": "2000-12-23T18:22:46-06:00", "utc": "2000-12-24T00:22:46Z", "ms": 977617366278.5188 } }, "covered_min": 0, "window_min": 119, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:15 on Fri 22 Dec to 07:33 on Sat 23 Dec.", "fact": "2000-12-22T12:15:06Z → 2000-12-23T13:32:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:23–18:22 on the 22nd, 16:24–18:23 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 119 of 119 minutes on the 22nd and 0 of 119 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 31870 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2000: Friday 22 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": "2000-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-22", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2000 falls on Friday 22 December. Trayodaśī runs from 06:15 on Fri 22 Dec to 07:33 on Sat 23 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2000/pradosha-vrata?on=2000-12-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/shivaratri?on=2000-12-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26331, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2000-12-23T07:32:33-06:00", "utc": "2000-12-23T13:32:33Z", "ms": 977578352892.4607 }, "end": { "local": "2000-12-24T09:15:42-06:00", "utc": "2000-12-24T15:15:42Z", "ms": 977670942470.8927 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-23T07:32:33-06:00", "utc": "2000-12-23T13:32:33Z", "ms": 977578352892.4607 }, "end": { "local": "2000-12-24T09:15:42-06:00", "utc": "2000-12-24T15:15:42Z", "ms": 977670942470.8927 } }, "kaala": "nishita", "days": [ { "local_date": "2000-12-22", "window": { "start": { "local": "2000-12-22T23:25:42-06:00", "utc": "2000-12-23T05:25:42Z", "ms": 977549142281.5515 }, "end": { "local": "2000-12-23T00:13:42-06:00", "utc": "2000-12-23T06:13:42Z", "ms": 977552022281.5515 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-12-23", "window": { "start": { "local": "2000-12-23T23:26:12-06:00", "utc": "2000-12-24T05:26:12Z", "ms": 977635571566.6416 }, "end": { "local": "2000-12-24T00:14:12-06:00", "utc": "2000-12-24T06:14:12Z", "ms": 977638451566.6416 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:33 on Sat 23 Dec to 09:16 on Sun 24 Dec.", "fact": "2000-12-23T13:32:33Z → 2000-12-24T15:15:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 22nd, 23:26–00:14 on the 23rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26331 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2000: Saturday 23 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-12-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-23", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2000 falls on Saturday 23 December. Caturdaśī runs from 07:33 on Sat 23 Dec to 09:16 on Sun 24 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2000/shivaratri?on=2000-12-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2000/vinayaka-chaturthi?on=2000-12-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2000, "local_date": "2000-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24815, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2000-12-28T19:10:04-06:00", "utc": "2000-12-29T01:10:04Z", "ms": 978052204379.4639 }, "end": { "local": "2000-12-29T21:52:59-06:00", "utc": "2000-12-30T03:52:59Z", "ms": 978148378542.5789 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2000-12-28T19:10:04-06:00", "utc": "2000-12-29T01:10:04Z", "ms": 978052204379.4639 }, "end": { "local": "2000-12-29T21:52:59-06:00", "utc": "2000-12-30T03:52:59Z", "ms": 978148378542.5789 } }, "kaala": "madhyahna", "days": [ { "local_date": "2000-12-28", "window": { "start": { "local": "2000-12-28T11:28:30-06:00", "utc": "2000-12-28T17:28:30Z", "ms": 978024509827.3275 }, "end": { "local": "2000-12-28T12:16:30-06:00", "utc": "2000-12-28T18:16:30Z", "ms": 978027389827.3275 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2000-12-29", "window": { "start": { "local": "2000-12-29T11:28:59-06:00", "utc": "2000-12-29T17:28:59Z", "ms": 978110939426.5936 }, "end": { "local": "2000-12-29T12:16:59-06:00", "utc": "2000-12-29T18:16:59Z", "ms": 978113819426.5936 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:10 on Thu 28 Dec to 21:53 on Fri 29 Dec.", "fact": "2000-12-29T01:10:04Z → 2000-12-30T03:52:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 28th, 11:29–12:17 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24815 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2000: Friday 29 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2000-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2000-12-29", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2000 falls on Friday 29 December. Caturthī runs from 19:10 on Thu 28 Dec to 21:53 on Fri 29 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2000/vinayaka-chaturthi?on=2000-12-29", "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" } }