{ "id": "/lagos/festivals/2001", "place": { "id": "2332459", "slug": "lagos", "name": "Lagos", "region": "Nigeria", "country": "NG", "lat": 6.45407, "lon": 3.39467, "elevation_m": 11, "tz": "Africa/Lagos" }, "year": 2001, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/lagos/festivals/2001/ekadashi?on=2001-01-06", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8960, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-01-05T11:03:58+01:00", "utc": "2001-01-05T10:03:58Z", "ms": 978689038407.3928 }, "end": { "local": "2001-01-06T09:28:53+01:00", "utc": "2001-01-06T08:28:53Z", "ms": 978769733393.5994 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-01-05T11:03:58+01:00", "utc": "2001-01-05T10:03:58Z", "ms": 978689038407.3928 }, "end": { "local": "2001-01-06T09:28:53+01:00", "utc": "2001-01-06T08:28:53Z", "ms": 978769733393.5994 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-01-05", "window": { "start": { "local": "2001-01-05T06:59:11+01:00", "utc": "2001-01-05T05:59:11Z", "ms": 978674350809.5675 }, "end": { "local": "2001-01-05T06:59:11+01:00", "utc": "2001-01-05T05:59:11Z", "ms": 978674350809.5675 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-01-06", "window": { "start": { "local": "2001-01-06T06:59:34+01:00", "utc": "2001-01-06T05:59:34Z", "ms": 978760773741.1638 }, "end": { "local": "2001-01-06T06:59:34+01:00", "utc": "2001-01-06T05:59:34Z", "ms": 978760773741.1638 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:04 on Fri 5 Jan to 09:29 on Sat 6 Jan.", "fact": "2001-01-05T10:03:58Z → 2001-01-06T08:28:53Z" }, { "step": "kaala", "text": "Sunrise is at 06:59 on the 5th and 07:00 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8960 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Lagos, 2001: Saturday 6 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": "2001-01-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-06", "confidence": "determinate" } ], "quote": "In Lagos, Putradā Ekādaśī 2001 falls on Saturday 6 January. Ekādaśī runs from 11:04 on Fri 5 Jan to 09:29 on Sat 6 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-01-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-01-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28529, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-01-07T07:11:32+01:00", "utc": "2001-01-07T06:11:32Z", "ms": 978847891996.9385 }, "end": { "local": "2001-01-08T04:19:04+01:00", "utc": "2001-01-08T03:19:04Z", "ms": 978923944367.94 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-01-07T07:11:32+01:00", "utc": "2001-01-07T06:11:32Z", "ms": 978847891996.9385 }, "end": { "local": "2001-01-08T04:19:04+01:00", "utc": "2001-01-08T03:19:04Z", "ms": 978923944367.94 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-01-06", "window": { "start": { "local": "2001-01-06T18:45:09+01:00", "utc": "2001-01-06T17:45:09Z", "ms": 978803108926.4884 }, "end": { "local": "2001-01-06T20:23:07+01:00", "utc": "2001-01-06T19:23:07Z", "ms": 978808987198.8799 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2001-01-07", "window": { "start": { "local": "2001-01-07T18:45:39+01:00", "utc": "2001-01-07T17:45:39Z", "ms": 978889538569.0365 }, "end": { "local": "2001-01-07T20:23:36+01:00", "utc": "2001-01-07T19:23:36Z", "ms": 978895415756.3689 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:12 on Sun 7 Jan to 04:19 on Mon 8 Jan.", "fact": "2001-01-07T06:11:32Z → 2001-01-08T03:19:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:45–20:23 on the 6th, 18:46–20:24 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 6th and 98 of 98 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28529 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Sunday 7 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": "2001-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-07", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Sunday 7 January. Trayodaśī runs from 07:12 on Sun 7 Jan to 04:19 on Mon 8 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-01-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-01-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35165, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-01-12T10:36:20+01:00", "utc": "2001-01-12T09:36:20Z", "ms": 979292180011.2932 }, "end": { "local": "2001-01-13T07:32:46+01:00", "utc": "2001-01-13T06:32:46Z", "ms": 979367566176.075 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-12T10:36:20+01:00", "utc": "2001-01-12T09:36:20Z", "ms": 979292180011.2932 }, "end": { "local": "2001-01-13T07:32:46+01:00", "utc": "2001-01-13T06:32:46Z", "ms": 979367566176.075 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-01-11", "window": { "start": { "local": "2001-01-11T20:46:45+01:00", "utc": "2001-01-11T19:46:45Z", "ms": 979242404838.8328 }, "end": { "local": "2001-01-11T20:46:45+01:00", "utc": "2001-01-11T19:46:45Z", "ms": 979242404838.8328 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-01-12", "window": { "start": { "local": "2001-01-12T21:46:41+01:00", "utc": "2001-01-12T20:46:41Z", "ms": 979332401036.4928 }, "end": { "local": "2001-01-12T21:46:41+01:00", "utc": "2001-01-12T20:46:41Z", "ms": 979332401036.4928 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:36 on Fri 12 Jan to 07:33 on Sat 13 Jan.", "fact": "2001-01-12T09:36:20Z → 2001-01-13T06:32:46Z" }, { "step": "kaala", "text": "Moonrise is at 20:47 on the 11th and 21:47 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35165 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Friday 12 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": "2001-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-12", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Friday 12 January. Caturthī runs from 10:36 on Fri 12 Jan to 07:33 on Sat 13 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21304, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-02-12T13:43:53+01:00", "utc": "2001-02-12T12:43:53Z", "ms": 981981833411.6989 } }, "span": { "of": "transit", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 } }, "kaala": "sunset-day", "days": [ { "local_date": "2001-01-13", "window": { "start": { "local": "2001-01-12T18:48:02+01:00", "utc": "2001-01-12T17:48:02Z", "ms": 979321681771.3798 }, "end": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2001-01-14", "window": { "start": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 }, "end": { "local": "2001-01-14T18:48:56+01:00", "utc": "2001-01-14T17:48:56Z", "ms": 979494536320.2178 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2001-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:44 on Sun 14 Jan.", "fact": "2001-01-13T23:43:33Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 18:48, and the day of the 14th ends at 18:49.", "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 21304 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Sunday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Lagos, 2001: Saturday 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": "2001-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2001-01-13", "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": "2001-01-12", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Lagos, Bhogi 2001 falls on Saturday 13 January. It is kept the day before Pongal, which falls on Sunday 14 January. The Sun enters Makara at 00:44 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21304, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-02-12T13:43:53+01:00", "utc": "2001-02-12T12:43:53Z", "ms": 981981833411.6989 } }, "span": { "of": "transit", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 } }, "kaala": "sunset-day", "days": [ { "local_date": "2001-01-13", "window": { "start": { "local": "2001-01-12T18:48:02+01:00", "utc": "2001-01-12T17:48:02Z", "ms": 979321681771.3798 }, "end": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2001-01-14", "window": { "start": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 }, "end": { "local": "2001-01-14T18:48:56+01:00", "utc": "2001-01-14T17:48:56Z", "ms": 979494536320.2178 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:44 on Sun 14 Jan.", "fact": "2001-01-13T23:43:33Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 18:48, and the day of the 14th ends at 18:49.", "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 21304 s" }, { "step": "ruling", "text": "Pongal, Lagos, 2001: Sunday 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": "2001-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2001-01-14", "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": "2001-01-13", "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 Lagos, Pongal 2001 falls on Sunday 14 January. The Sun enters Makara at 00:44 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2613, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-02-12T13:43:53+01:00", "utc": "2001-02-12T12:43:53Z", "ms": 981981833411.6989 } }, "span": { "of": "transit", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 } }, "kaala": "civil-day", "days": [ { "local_date": "2001-01-13", "window": { "start": { "local": "2001-01-13T00:00:00+01:00", "utc": "2001-01-12T23:00:00Z", "ms": 979340400000 }, "end": { "local": "2001-01-14T00:00:00+01:00", "utc": "2001-01-13T23:00:00Z", "ms": 979426800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2001-01-14", "window": { "start": { "local": "2001-01-14T00:00:00+01:00", "utc": "2001-01-13T23:00:00Z", "ms": 979426800000 }, "end": { "local": "2001-01-15T00:00:00+01:00", "utc": "2001-01-14T23:00:00Z", "ms": 979513200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:44 on Sun 14 Jan.", "fact": "2001-01-13T23:43:33Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Lagos.", "fact": "civil-day: midnight-to-midnight · Africa/Lagos" }, { "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 2613 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Lagos, 2001: Sunday 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": "2001-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2001-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2001-01-14", "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 Lagos, Makara Saṅkrānti 2001 falls on Sunday 14 January. The Sun enters Makara at 00:44 on Sun 14 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21304, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-02-12T13:43:53+01:00", "utc": "2001-02-12T12:43:53Z", "ms": 981981833411.6989 } }, "span": { "of": "transit", "start": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 }, "end": { "local": "2001-01-14T00:43:33+01:00", "utc": "2001-01-13T23:43:33Z", "ms": 979429412965.2297 } }, "kaala": "sunset-day", "days": [ { "local_date": "2001-01-13", "window": { "start": { "local": "2001-01-12T18:48:02+01:00", "utc": "2001-01-12T17:48:02Z", "ms": 979321681771.3798 }, "end": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2001-01-14", "window": { "start": { "local": "2001-01-13T18:48:29+01:00", "utc": "2001-01-13T17:48:29Z", "ms": 979408109260.9592 }, "end": { "local": "2001-01-14T18:48:56+01:00", "utc": "2001-01-14T17:48:56Z", "ms": 979494536320.2178 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2001-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:44 on Sun 14 Jan.", "fact": "2001-01-13T23:43:33Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 18:48, and the day of the 14th ends at 18:49.", "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 21304 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Sunday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Lagos, 2001: Monday 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": "2001-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2001-01-15", "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": "2001-01-14", "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 Lagos, Mattu Pongal 2001 falls on Monday 15 January. It is kept the day after Pongal, which falls on Sunday 14 January. The Sun enters Makara at 00:44 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-01-19", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9842, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-01-19T02:44:25+01:00", "utc": "2001-01-19T01:44:25Z", "ms": 979868665329.672 }, "end": { "local": "2001-01-20T04:19:31+01:00", "utc": "2001-01-20T03:19:31Z", "ms": 979960771389.9299 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-19T02:44:25+01:00", "utc": "2001-01-19T01:44:25Z", "ms": 979868665329.672 }, "end": { "local": "2001-01-20T04:19:31+01:00", "utc": "2001-01-20T03:19:31Z", "ms": 979960771389.9299 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-01-19", "window": { "start": { "local": "2001-01-19T07:03:22+01:00", "utc": "2001-01-19T06:03:22Z", "ms": 979884201849.5186 }, "end": { "local": "2001-01-19T07:03:22+01:00", "utc": "2001-01-19T06:03:22Z", "ms": 979884201849.5186 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-01-20", "window": { "start": { "local": "2001-01-20T07:03:34+01:00", "utc": "2001-01-20T06:03:34Z", "ms": 979970613510.3518 }, "end": { "local": "2001-01-20T07:03:34+01:00", "utc": "2001-01-20T06:03:34Z", "ms": 979970613510.3518 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:44 on Fri 19 Jan to 04:20 on Sat 20 Jan.", "fact": "2001-01-19T01:44:25Z → 2001-01-20T03:19:31Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 19th and 07:04 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9842 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Lagos, 2001: Friday 19 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": "2001-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-19", "confidence": "determinate" } ], "quote": "In Lagos, Ṣaṭtilā Ekādaśī 2001 falls on Friday 19 January. Ekādaśī runs from 02:44 on Fri 19 Jan to 04:20 on Sat 20 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-01-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35636, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-01-21T06:23:03+01:00", "utc": "2001-01-21T05:23:03Z", "ms": 980054582788.264 }, "end": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-21T06:23:03+01:00", "utc": "2001-01-21T05:23:03Z", "ms": 980054582788.264 }, "end": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-01-20", "window": { "start": { "local": "2001-01-20T18:51:28+01:00", "utc": "2001-01-20T17:51:28Z", "ms": 980013088461.5283 }, "end": { "local": "2001-01-20T20:29:07+01:00", "utc": "2001-01-20T19:29:07Z", "ms": 980018946568.6874 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2001-01-21", "window": { "start": { "local": "2001-01-21T18:51:52+01:00", "utc": "2001-01-21T17:51:52Z", "ms": 980099511924.1113 }, "end": { "local": "2001-01-21T20:29:28+01:00", "utc": "2001-01-21T19:29:28Z", "ms": 980105368214.651 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:23 on Sun 21 Jan to 08:47 on Mon 22 Jan.", "fact": "2001-01-21T05:23:03Z → 2001-01-22T07:47:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:29 on the 20th, 18:52–20:29 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 20th and 98 of 98 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35636 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Sunday 21 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": "2001-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-21", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Sunday 21 January. Trayodaśī runs from 06:23 on Sun 21 Jan to 08:47 on Mon 22 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-01-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-01-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26714, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 }, "end": { "local": "2001-01-23T11:24:04+01:00", "utc": "2001-01-23T10:24:04Z", "ms": 980245444359.8457 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 }, "end": { "local": "2001-01-23T11:24:04+01:00", "utc": "2001-01-23T10:24:04Z", "ms": 980245444359.8457 } }, "kaala": "nishita", "days": [ { "local_date": "2001-01-21", "window": { "start": { "local": "2001-01-22T00:33:53+01:00", "utc": "2001-01-21T23:33:53Z", "ms": 980120033013.6353 }, "end": { "local": "2001-01-22T01:21:53+01:00", "utc": "2001-01-22T00:21:53Z", "ms": 980122913013.6353 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-01-22", "window": { "start": { "local": "2001-01-23T00:34:09+01:00", "utc": "2001-01-22T23:34:09Z", "ms": 980206448903.9089 }, "end": { "local": "2001-01-23T01:22:09+01:00", "utc": "2001-01-23T00:22:09Z", "ms": 980209328903.9089 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:47 on Mon 22 Jan to 11:24 on Tue 23 Jan.", "fact": "2001-01-22T07:47:07Z → 2001-01-23T10:24:04Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:34–01:22 on the 21st, 00:34–01:22 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26714 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Monday 22 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": "2001-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-22", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Monday 22 January. Caturdaśī runs from 08:47 on Mon 22 Jan to 11:24 on Tue 23 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-01-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6193, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 }, "end": { "local": "2001-01-23T11:24:04+01:00", "utc": "2001-01-23T10:24:04Z", "ms": 980245444359.8457 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-22T08:47:07+01:00", "utc": "2001-01-22T07:47:07Z", "ms": 980149627453.1731 }, "end": { "local": "2001-01-23T11:24:04+01:00", "utc": "2001-01-23T10:24:04Z", "ms": 980245444359.8457 } }, "kaala": "arunodaya", "days": [ { "local_date": "2001-01-22", "window": { "start": { "local": "2001-01-22T05:26:18+01:00", "utc": "2001-01-22T04:26:18Z", "ms": 980137577812.6195 }, "end": { "local": "2001-01-22T07:03:54+01:00", "utc": "2001-01-22T06:03:54Z", "ms": 980143434103.1592 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2001-01-23", "window": { "start": { "local": "2001-01-23T05:26:29+01:00", "utc": "2001-01-23T04:26:29Z", "ms": 980223988584.7264 }, "end": { "local": "2001-01-23T07:04:03+01:00", "utc": "2001-01-23T06:04:03Z", "ms": 980229843014.1146 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:47 on Mon 22 Jan to 11:24 on Tue 23 Jan.", "fact": "2001-01-22T07:47:07Z → 2001-01-23T10:24:04Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:26–07:04 on the 22nd, 05:26–07:04 on the 23rd.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 98 minutes on the 22nd and 98 of 98 on the 23rd.", "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 6193 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Lagos, 2001: Tuesday 23 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-23", "confidence": "determinate" } ], "quote": "In Lagos, Yama Tarpaṇa 2001 falls on Tuesday 23 January. Caturdaśī runs from 08:47 on Mon 22 Jan to 11:24 on Tue 23 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30243, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-01-27T21:47:17+01:00", "utc": "2001-01-27T20:47:17Z", "ms": 980628437457.3647 }, "end": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-27T21:47:17+01:00", "utc": "2001-01-27T20:47:17Z", "ms": 980628437457.3647 }, "end": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-01-27", "window": { "start": { "local": "2001-01-27T12:35:14+01:00", "utc": "2001-01-27T11:35:14Z", "ms": 980595314446.4478 }, "end": { "local": "2001-01-27T13:23:14+01:00", "utc": "2001-01-27T12:23:14Z", "ms": 980598194446.4478 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-01-28", "window": { "start": { "local": "2001-01-28T12:35:26+01:00", "utc": "2001-01-28T11:35:26Z", "ms": 980681726018.7114 }, "end": { "local": "2001-01-28T13:23:26+01:00", "utc": "2001-01-28T12:23:26Z", "ms": 980684606018.7114 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:47 on Sat 27 Jan to 23:51 on Sun 28 Jan.", "fact": "2001-01-27T20:47:17Z → 2001-01-28T22:51:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:35–13:23 on the 27th, 12:35–13:23 on the 28th.", "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 27th and 48 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 30243 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Lagos, 2001: Sunday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-28", "confidence": "determinate" } ], "quote": "In Lagos, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2001 falls on Sunday 28 January. Caturthī runs from 21:47 on Sat 27 Jan to 23:51 on Sun 28 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4553, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-01-27T21:47:17+01:00", "utc": "2001-01-27T20:47:17Z", "ms": 980628437457.3647 }, "end": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-27T21:47:17+01:00", "utc": "2001-01-27T20:47:17Z", "ms": 980628437457.3647 }, "end": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-01-27", "window": { "start": { "local": "2001-01-27T18:54:00+01:00", "utc": "2001-01-27T17:54:00Z", "ms": 980618039668.9868 }, "end": { "local": "2001-01-27T20:31:24+01:00", "utc": "2001-01-27T19:31:24Z", "ms": 980623884164.7328 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2001-01-28", "window": { "start": { "local": "2001-01-28T18:54:19+01:00", "utc": "2001-01-28T17:54:19Z", "ms": 980704458650.3408 }, "end": { "local": "2001-01-28T20:31:41+01:00", "utc": "2001-01-28T19:31:41Z", "ms": 980710301041.86 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:47 on Sat 27 Jan to 23:51 on Sun 28 Jan.", "fact": "2001-01-27T20:47:17Z → 2001-01-28T22:51:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:31 on the 27th, 18:54–20:32 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 97 minutes on the 27th and 97 of 97 on the 28th.", "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 4553 s" }, { "step": "ruling", "text": "Tila Caturthī, Lagos, 2001: Sunday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-28", "confidence": "determinate" } ], "quote": "In Lagos, Tila Caturthī 2001 falls on Sunday 28 January. Caturthī runs from 21:47 on Sat 27 Jan to 23:51 on Sun 28 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37658, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "end": { "local": "2001-01-30T01:29:14+01:00", "utc": "2001-01-30T00:29:14Z", "ms": 980814553839.3036 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "end": { "local": "2001-01-30T01:29:14+01:00", "utc": "2001-01-30T00:29:14Z", "ms": 980814553839.3036 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-01-28", "window": { "start": { "local": "2001-01-28T12:35:26+01:00", "utc": "2001-01-28T11:35:26Z", "ms": 980681726018.7114 }, "end": { "local": "2001-01-28T13:23:26+01:00", "utc": "2001-01-28T12:23:26Z", "ms": 980684606018.7114 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-01-29", "window": { "start": { "local": "2001-01-29T12:35:37+01:00", "utc": "2001-01-29T11:35:37Z", "ms": 980768136763.4664 }, "end": { "local": "2001-01-29T13:23:37+01:00", "utc": "2001-01-29T12:23:37Z", "ms": 980771016763.4664 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:51 on Sun 28 Jan to 01:29 on Tue 30 Jan.", "fact": "2001-01-28T22:51:04Z → 2001-01-30T00:29:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:35–13:23 on the 28th, 12:36–13:24 on the 29th.", "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 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37658 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Lagos, 2001: Monday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-29", "confidence": "determinate" } ], "quote": "In Lagos, Śrī Pañcamī 2001 falls on Monday 29 January. Pañcamī runs from 23:51 on Sun 28 Jan to 01:29 on Tue 30 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37658, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "end": { "local": "2001-01-30T01:29:14+01:00", "utc": "2001-01-30T00:29:14Z", "ms": 980814553839.3036 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-28T23:51:04+01:00", "utc": "2001-01-28T22:51:04Z", "ms": 980722264048.715 }, "end": { "local": "2001-01-30T01:29:14+01:00", "utc": "2001-01-30T00:29:14Z", "ms": 980814553839.3036 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-01-28", "window": { "start": { "local": "2001-01-28T12:35:26+01:00", "utc": "2001-01-28T11:35:26Z", "ms": 980681726018.7114 }, "end": { "local": "2001-01-28T13:23:26+01:00", "utc": "2001-01-28T12:23:26Z", "ms": 980684606018.7114 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-01-29", "window": { "start": { "local": "2001-01-29T12:35:37+01:00", "utc": "2001-01-29T11:35:37Z", "ms": 980768136763.4664 }, "end": { "local": "2001-01-29T13:23:37+01:00", "utc": "2001-01-29T12:23:37Z", "ms": 980771016763.4664 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:51 on Sun 28 Jan to 01:29 on Tue 30 Jan.", "fact": "2001-01-28T22:51:04Z → 2001-01-30T00:29:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:35–13:23 on the 28th, 12:36–13:24 on the 29th.", "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 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37658 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Lagos, 2001: Monday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-29", "confidence": "determinate" } ], "quote": "In Lagos, Vasanta Pañcamī 2001 falls on Monday 29 January. Pañcamī runs from 23:51 on Sun 28 Jan to 01:29 on Tue 30 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8622, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-01-31T02:35:20+01:00", "utc": "2001-01-31T01:35:20Z", "ms": 980904919641.2433 }, "end": { "local": "2001-02-01T03:03:42+01:00", "utc": "2001-02-01T02:03:42Z", "ms": 980993022418.6759 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-01-31T02:35:20+01:00", "utc": "2001-01-31T01:35:20Z", "ms": 980904919641.2433 }, "end": { "local": "2001-02-01T03:03:42+01:00", "utc": "2001-02-01T02:03:42Z", "ms": 980993022418.6759 } }, "kaala": "arunodaya", "days": [ { "local_date": "2001-01-31", "window": { "start": { "local": "2001-01-31T05:27:22+01:00", "utc": "2001-01-31T04:27:22Z", "ms": 980915242016.1832 }, "end": { "local": "2001-01-31T07:04:40+01:00", "utc": "2001-01-31T06:04:40Z", "ms": 980921080090.9993 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2001-02-01", "window": { "start": { "local": "2001-02-01T05:27:25+01:00", "utc": "2001-02-01T04:27:25Z", "ms": 981001644532.5084 }, "end": { "local": "2001-02-01T07:04:40+01:00", "utc": "2001-02-01T06:04:40Z", "ms": 981007480397.1648 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:35 on Wed 31 Jan to 03:04 on Thu 1 Feb.", "fact": "2001-01-31T01:35:20Z → 2001-02-01T02:03:42Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:27–07:05 on the 31st, 05:27–07:05 on the 1st.", "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 97 of 97 minutes on the 31st and 0 of 97 on the 1st.", "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 8622 s" }, { "step": "ruling", "text": "Ratha Saptamī, Lagos, 2001: Wednesday 31 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-01-31", "confidence": "determinate" } ], "quote": "In Lagos, Ratha Saptamī 2001 falls on Wednesday 31 January. Saptamī runs from 02:35 on Wed 31 Jan to 03:04 on Thu 1 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-02-04", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24689, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-02-04T00:13:06+01:00", "utc": "2001-02-03T23:13:06Z", "ms": 981241986355.5376 }, "end": { "local": "2001-02-04T21:53:14+01:00", "utc": "2001-02-04T20:53:14Z", "ms": 981319993732.6774 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-02-04T00:13:06+01:00", "utc": "2001-02-03T23:13:06Z", "ms": 981241986355.5376 }, "end": { "local": "2001-02-04T21:53:14+01:00", "utc": "2001-02-04T20:53:14Z", "ms": 981319993732.6774 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-02-04", "window": { "start": { "local": "2001-02-04T07:04:36+01:00", "utc": "2001-02-04T06:04:36Z", "ms": 981266675575.3568 }, "end": { "local": "2001-02-04T07:04:36+01:00", "utc": "2001-02-04T06:04:36Z", "ms": 981266675575.3568 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-02-05", "window": { "start": { "local": "2001-02-05T07:04:32+01:00", "utc": "2001-02-05T06:04:32Z", "ms": 981353072077.2643 }, "end": { "local": "2001-02-05T07:04:32+01:00", "utc": "2001-02-05T06:04:32Z", "ms": 981353072077.2643 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:13 on Sun 4 Feb to 21:53 on Sun 4 Feb.", "fact": "2001-02-03T23:13:06Z → 2001-02-04T20:53:14Z" }, { "step": "kaala", "text": "Sunrise is at 07:05 on the 4th and 07:05 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 4th and is not on the 5th.", "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 24689 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Lagos, 2001: Sunday 4 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": "2001-02-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-04", "confidence": "determinate" } ], "quote": "In Lagos, Jayā Ekādaśī 2001 falls on Sunday 4 February. Ekādaśī runs from 00:13 on Sun 4 Feb to 21:53 on Sun 4 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-02-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20076, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-02-04T21:53:14+01:00", "utc": "2001-02-04T20:53:14Z", "ms": 981319993732.6774 }, "end": { "local": "2001-02-05T18:59:04+01:00", "utc": "2001-02-05T17:59:04Z", "ms": 981395944442.0186 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-02-04T21:53:14+01:00", "utc": "2001-02-04T20:53:14Z", "ms": 981319993732.6774 }, "end": { "local": "2001-02-05T18:59:04+01:00", "utc": "2001-02-05T17:59:04Z", "ms": 981395944442.0186 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-02-04", "window": { "start": { "local": "2001-02-04T12:36:24+01:00", "utc": "2001-02-04T11:36:24Z", "ms": 981286583680.6768 }, "end": { "local": "2001-02-04T13:24:24+01:00", "utc": "2001-02-04T12:24:24Z", "ms": 981289463680.6768 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-02-05", "window": { "start": { "local": "2001-02-05T12:36:29+01:00", "utc": "2001-02-05T11:36:29Z", "ms": 981372988581.6755 }, "end": { "local": "2001-02-05T13:24:29+01:00", "utc": "2001-02-05T12:24:29Z", "ms": 981375868581.6755 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:53 on Sun 4 Feb to 18:59 on Mon 5 Feb.", "fact": "2001-02-04T20:53:14Z → 2001-02-05T17:59:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:36–13:24 on the 4th, 12:36–13:24 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20076 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Lagos, 2001: Monday 5 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": "2001-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-05", "confidence": "determinate" } ], "quote": "In Lagos, Bhīṣma Dvādaśī 2001 falls on Monday 5 February. Dvādaśī runs from 21:53 on Sun 4 Feb to 18:59 on Mon 5 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-02-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-05", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 159, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-02-05T18:59:04+01:00", "utc": "2001-02-05T17:59:04Z", "ms": 981395944442.0186 }, "end": { "local": "2001-02-06T15:38:02+01:00", "utc": "2001-02-06T14:38:02Z", "ms": 981470281886.6106 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-02-05T18:59:04+01:00", "utc": "2001-02-05T17:59:04Z", "ms": 981395944442.0186 }, "end": { "local": "2001-02-06T15:38:02+01:00", "utc": "2001-02-06T14:38:02Z", "ms": 981470281886.6106 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-02-05", "window": { "start": { "local": "2001-02-05T18:56:25+01:00", "utc": "2001-02-05T17:56:25Z", "ms": 981395785086.0867 }, "end": { "local": "2001-02-05T20:33:29+01:00", "utc": "2001-02-05T19:33:29Z", "ms": 981401609427.9175 } }, "covered_min": 94, "window_min": 97, "qualifies": true }, { "local_date": "2001-02-06", "window": { "start": { "local": "2001-02-06T18:56:38+01:00", "utc": "2001-02-06T17:56:38Z", "ms": 981482197674.4475 }, "end": { "local": "2001-02-06T20:33:40+01:00", "utc": "2001-02-06T19:33:40Z", "ms": 981488019625.2972 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:59 on Mon 5 Feb to 15:38 on Tue 6 Feb.", "fact": "2001-02-05T17:59:04Z → 2001-02-06T14:38:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:56–20:33 on the 5th, 18:57–20:34 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 97 minutes on the 5th and 0 of 97 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 159 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Monday 5 February.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-05", "confidence": "boundary" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Monday 5 February. Trayodaśī runs from 18:59 on Mon 5 Feb to 15:38 on Tue 6 Feb and covers 94 of 97 minutes of pradoṣa that evening. It is 2 min 39 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2260, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-02-07T11:58:56+01:00", "utc": "2001-02-07T10:58:56Z", "ms": 981543536156.561 }, "end": { "local": "2001-02-08T08:11:39+01:00", "utc": "2001-02-08T07:11:39Z", "ms": 981616299369.1421 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2001-02-07T11:58:56+01:00", "utc": "2001-02-07T10:58:56Z", "ms": 981543536156.561 }, "end": { "local": "2001-02-08T08:11:39+01:00", "utc": "2001-02-08T07:11:39Z", "ms": 981616299369.1421 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-02-07", "window": { "start": { "local": "2001-02-07T12:36:36+01:00", "utc": "2001-02-07T11:36:36Z", "ms": 981545795931.6923 }, "end": { "local": "2001-02-07T13:24:36+01:00", "utc": "2001-02-07T12:24:36Z", "ms": 981548675931.6923 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-02-08", "window": { "start": { "local": "2001-02-08T12:36:38+01:00", "utc": "2001-02-08T11:36:38Z", "ms": 981632198401.6135 }, "end": { "local": "2001-02-08T13:24:38+01:00", "utc": "2001-02-08T12:24:38Z", "ms": 981635078401.6135 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:59 on Wed 7 Feb to 08:12 on Thu 8 Feb.", "fact": "2001-02-07T10:58:56Z → 2001-02-08T07:11:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 7th, 12:37–13:25 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2260 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Lagos, 2001: Wednesday 7 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": "2001-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-07", "confidence": "determinate" } ], "quote": "In Lagos, Māghī Pūrṇimā 2001 falls on Wednesday 7 February. Pūrṇimā runs from 11:59 on Wed 7 Feb to 08:12 on Thu 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-02-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-10", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1481, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-02-10T21:47:04+01:00", "utc": "2001-02-10T20:47:04Z", "ms": 981838024262.43 }, "end": { "local": "2001-02-11T19:13:06+01:00", "utc": "2001-02-11T18:13:06Z", "ms": 981915186132.9928 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-02-10T21:47:04+01:00", "utc": "2001-02-10T20:47:04Z", "ms": 981838024262.43 }, "end": { "local": "2001-02-11T19:13:06+01:00", "utc": "2001-02-11T18:13:06Z", "ms": 981915186132.9928 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-02-10", "window": { "start": { "local": "2001-02-10T21:22:23+01:00", "utc": "2001-02-10T20:22:23Z", "ms": 981836543047.9819 }, "end": { "local": "2001-02-10T21:22:23+01:00", "utc": "2001-02-10T20:22:23Z", "ms": 981836543047.9819 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-02-11", "window": { "start": { "local": "2001-02-11T22:15:58+01:00", "utc": "2001-02-11T21:15:58Z", "ms": 981926158453.2953 }, "end": { "local": "2001-02-11T22:15:58+01:00", "utc": "2001-02-11T21:15:58Z", "ms": 981926158453.2953 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:47 on Sat 10 Feb to 19:13 on Sun 11 Feb.", "fact": "2001-02-10T20:47:04Z → 2001-02-11T18:13:06Z" }, { "step": "kaala", "text": "Moonrise is at 21:22 on the 10th and 22:16 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1481 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Saturday 10 February.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-02-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-10", "confidence": "boundary" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Saturday 10 February. Caturthī runs from 21:47 on Sat 10 Feb to 19:13 on Sun 11 Feb, and is current at moonrise on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-02-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-02-18", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29425, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-02-17T20:21:56+01:00", "utc": "2001-02-17T19:21:56Z", "ms": 982437716291.536 }, "end": { "local": "2001-02-18T22:51:47+01:00", "utc": "2001-02-18T21:51:47Z", "ms": 982533107435.1941 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-02-17T20:21:56+01:00", "utc": "2001-02-17T19:21:56Z", "ms": 982437716291.536 }, "end": { "local": "2001-02-18T22:51:47+01:00", "utc": "2001-02-18T21:51:47Z", "ms": 982533107435.1941 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-02-18", "window": { "start": { "local": "2001-02-18T07:02:27+01:00", "utc": "2001-02-18T06:02:27Z", "ms": 982476147414.6077 }, "end": { "local": "2001-02-18T07:02:27+01:00", "utc": "2001-02-18T06:02:27Z", "ms": 982476147414.6077 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-02-19", "window": { "start": { "local": "2001-02-19T07:02:12+01:00", "utc": "2001-02-19T06:02:12Z", "ms": 982562532260.4285 }, "end": { "local": "2001-02-19T07:02:12+01:00", "utc": "2001-02-19T06:02:12Z", "ms": 982562532260.4285 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:22 on Sat 17 Feb to 22:52 on Sun 18 Feb.", "fact": "2001-02-17T19:21:56Z → 2001-02-18T21:51:47Z" }, { "step": "kaala", "text": "Sunrise is at 07:02 on the 18th and 07:02 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29425 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Lagos, 2001: Sunday 18 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": "2001-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-18", "confidence": "determinate" } ], "quote": "In Lagos, Vijayā Ekādaśī 2001 falls on Sunday 18 February. Ekādaśī runs from 20:22 on Sat 17 Feb to 22:52 on Sun 18 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-02-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-02-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17998, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-02-20T01:34:48+01:00", "utc": "2001-02-20T00:34:48Z", "ms": 982629287656.9402 }, "end": { "local": "2001-02-21T04:19:39+01:00", "utc": "2001-02-21T03:19:39Z", "ms": 982725578731.387 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-02-20T01:34:48+01:00", "utc": "2001-02-20T00:34:48Z", "ms": 982629287656.9402 }, "end": { "local": "2001-02-21T04:19:39+01:00", "utc": "2001-02-21T03:19:39Z", "ms": 982725578731.387 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-02-19", "window": { "start": { "local": "2001-02-19T18:58:20+01:00", "utc": "2001-02-19T17:58:20Z", "ms": 982605500484.0654 }, "end": { "local": "2001-02-19T20:34:49+01:00", "utc": "2001-02-19T19:34:49Z", "ms": 982611289270.684 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2001-02-20", "window": { "start": { "local": "2001-02-20T18:58:24+01:00", "utc": "2001-02-20T17:58:24Z", "ms": 982691904023.556 }, "end": { "local": "2001-02-20T20:34:50+01:00", "utc": "2001-02-20T19:34:50Z", "ms": 982697690126.9452 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:35 on Tue 20 Feb to 04:20 on Wed 21 Feb.", "fact": "2001-02-20T00:34:48Z → 2001-02-21T03:19:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:35 on the 19th, 18:58–20:35 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 19th and 96 of 96 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17998 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Tuesday 20 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": "2001-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-20", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Tuesday 20 February. Trayodaśī runs from 01:35 on Tue 20 Feb to 04:20 on Wed 21 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-02-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10537, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-02-21T04:19:39+01:00", "utc": "2001-02-21T03:19:39Z", "ms": 982725578731.387 }, "end": { "local": "2001-02-22T06:57:15+01:00", "utc": "2001-02-22T05:57:15Z", "ms": 982821434914.5656 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-02-21T04:19:39+01:00", "utc": "2001-02-21T03:19:39Z", "ms": 982725578731.387 }, "end": { "local": "2001-02-22T06:57:15+01:00", "utc": "2001-02-22T05:57:15Z", "ms": 982821434914.5656 } }, "kaala": "nishita", "days": [ { "local_date": "2001-02-20", "window": { "start": { "local": "2001-02-21T00:36:02+01:00", "utc": "2001-02-20T23:36:02Z", "ms": 982712161911.2654 }, "end": { "local": "2001-02-21T01:24:02+01:00", "utc": "2001-02-21T00:24:02Z", "ms": 982715041911.2654 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-02-21", "window": { "start": { "local": "2001-02-22T00:35:55+01:00", "utc": "2001-02-21T23:35:55Z", "ms": 982798554751.6527 }, "end": { "local": "2001-02-22T01:23:55+01:00", "utc": "2001-02-22T00:23:55Z", "ms": 982801434751.6527 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:20 on Wed 21 Feb to 06:57 on Thu 22 Feb.", "fact": "2001-02-21T03:19:39Z → 2001-02-22T05:57:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:36–01:24 on the 20th, 00:36–01:24 on the 21st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 10537 s" }, { "step": "ruling", "text": "Mahāśivarātri, Lagos, 2001: Wednesday 21 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-02-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-21", "confidence": "determinate" } ], "quote": "In Lagos, Mahāśivarātri 2001 falls on Wednesday 21 February. Caturdaśī runs from 04:20 on Wed 21 Feb to 06:57 on Thu 22 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-02-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4264, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-02-26T14:34:24+01:00", "utc": "2001-02-26T13:34:24Z", "ms": 983194464110.1261 }, "end": { "local": "2001-02-27T15:31:59+01:00", "utc": "2001-02-27T14:31:59Z", "ms": 983284319369.0254 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-02-26T14:34:24+01:00", "utc": "2001-02-26T13:34:24Z", "ms": 983194464110.1261 }, "end": { "local": "2001-02-27T15:31:59+01:00", "utc": "2001-02-27T14:31:59Z", "ms": 983284319369.0254 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-02-26", "window": { "start": { "local": "2001-02-26T12:35:20+01:00", "utc": "2001-02-26T11:35:20Z", "ms": 983187320095.6475 }, "end": { "local": "2001-02-26T13:23:20+01:00", "utc": "2001-02-26T12:23:20Z", "ms": 983190200095.6475 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-02-27", "window": { "start": { "local": "2001-02-27T12:35:10+01:00", "utc": "2001-02-27T11:35:10Z", "ms": 983273709683.1499 }, "end": { "local": "2001-02-27T13:23:10+01:00", "utc": "2001-02-27T12:23:10Z", "ms": 983276589683.1499 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:34 on Mon 26 Feb to 15:32 on Tue 27 Feb.", "fact": "2001-02-26T13:34:24Z → 2001-02-27T14:31:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:35–13:23 on the 26th, 12:35–13:23 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4264 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Tuesday 27 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-02-27", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Tuesday 27 February. Caturthī runs from 14:34 on Mon 26 Feb to 15:32 on Tue 27 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-03-06", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3203, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-03-05T10:33:01+01:00", "utc": "2001-03-05T09:33:01Z", "ms": 983784780828.508 }, "end": { "local": "2001-03-06T07:50:30+01:00", "utc": "2001-03-06T06:50:30Z", "ms": 983861430460.534 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-03-05T10:33:01+01:00", "utc": "2001-03-05T09:33:01Z", "ms": 983784780828.508 }, "end": { "local": "2001-03-06T07:50:30+01:00", "utc": "2001-03-06T06:50:30Z", "ms": 983861430460.534 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-03-05", "window": { "start": { "local": "2001-03-05T06:57:31+01:00", "utc": "2001-03-05T05:57:31Z", "ms": 983771851282.0854 }, "end": { "local": "2001-03-05T06:57:31+01:00", "utc": "2001-03-05T05:57:31Z", "ms": 983771851282.0854 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-03-06", "window": { "start": { "local": "2001-03-06T06:57:07+01:00", "utc": "2001-03-06T05:57:07Z", "ms": 983858226985.734 }, "end": { "local": "2001-03-06T06:57:07+01:00", "utc": "2001-03-06T05:57:07Z", "ms": 983858226985.734 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:33 on Mon 5 Mar to 07:51 on Tue 6 Mar.", "fact": "2001-03-05T09:33:01Z → 2001-03-06T06:50:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:58 on the 5th and 06:57 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3203 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Lagos, 2001: Tuesday 6 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": "2001-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-06", "confidence": "determinate" } ], "quote": "In Lagos, Āmalakī Ekādaśī 2001 falls on Tuesday 6 March. Ekādaśī runs from 10:33 on Mon 5 Mar to 07:51 on Tue 6 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-03-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17240, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-03-07T04:44:08+01:00", "utc": "2001-03-07T03:44:08Z", "ms": 983936647547.4095 }, "end": { "local": "2001-03-08T01:21:18+01:00", "utc": "2001-03-08T00:21:18Z", "ms": 984010877638.1598 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-03-07T04:44:08+01:00", "utc": "2001-03-07T03:44:08Z", "ms": 983936647547.4095 }, "end": { "local": "2001-03-08T01:21:18+01:00", "utc": "2001-03-08T00:21:18Z", "ms": 984010877638.1598 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-03-06", "window": { "start": { "local": "2001-03-06T18:58:18+01:00", "utc": "2001-03-06T17:58:18Z", "ms": 983901497602.2896 }, "end": { "local": "2001-03-06T20:34:05+01:00", "utc": "2001-03-06T19:34:05Z", "ms": 983907244886.6635 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2001-03-07", "window": { "start": { "local": "2001-03-07T18:58:14+01:00", "utc": "2001-03-07T17:58:14Z", "ms": 983987893685.6443 }, "end": { "local": "2001-03-07T20:33:58+01:00", "utc": "2001-03-07T19:33:58Z", "ms": 983993638134.922 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:44 on Wed 7 Mar to 01:21 on Thu 8 Mar.", "fact": "2001-03-07T03:44:08Z → 2001-03-08T00:21:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:34 on the 6th, 18:58–20:34 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 6th and 96 of 96 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17240 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Wednesday 7 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": "2001-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-07", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Wednesday 7 March. Trayodaśī runs from 04:44 on Wed 7 Mar to 01:21 on Thu 8 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-03-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2101, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-03-08T21:50:56+01:00", "utc": "2001-03-08T20:50:56Z", "ms": 984084655930.3933 }, "end": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-03-08T21:50:56+01:00", "utc": "2001-03-08T20:50:56Z", "ms": 984084655930.3933 }, "end": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 } }, "kaala": "sayahna", "days": [ { "local_date": "2001-03-08", "window": { "start": { "local": "2001-03-08T16:33:47+01:00", "utc": "2001-03-08T15:33:47Z", "ms": 984065626933.3286 }, "end": { "local": "2001-03-08T18:58:09+01:00", "utc": "2001-03-08T17:58:09Z", "ms": 984074289402.8539 } }, "covered_min": 0, "window_min": 144, "qualifies": false }, { "local_date": "2001-03-09", "window": { "start": { "local": "2001-03-09T16:33:38+01:00", "utc": "2001-03-09T15:33:38Z", "ms": 984152018115.9307 }, "end": { "local": "2001-03-09T18:58:05+01:00", "utc": "2001-03-09T17:58:05Z", "ms": 984160684776.8798 } }, "covered_min": 109, "window_min": 144, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:51 on Thu 8 Mar to 18:23 on Fri 9 Mar.", "fact": "2001-03-08T20:50:56Z → 2001-03-09T17:23:04Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:34–18:58 on the 8th, 16:34–18:58 on the 9th.", "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 144 minutes on the 8th and 109 of 144 on the 9th.", "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 2101 s" }, { "step": "ruling", "text": "Holikā Dahana, Lagos, 2001: Friday 9 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": "2001-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-09", "confidence": "determinate" } ], "quote": "In Lagos, Holikā Dahana 2001 falls on Friday 9 March. Pūrṇimā runs from 21:51 on Thu 8 Mar to 18:23 on Fri 9 Mar and covers 109 of 144 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2101, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-03-08T21:50:56+01:00", "utc": "2001-03-08T20:50:56Z", "ms": 984084655930.3933 }, "end": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2001-03-08T21:50:56+01:00", "utc": "2001-03-08T20:50:56Z", "ms": 984084655930.3933 }, "end": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 } }, "kaala": "sayahna", "days": [ { "local_date": "2001-03-08", "window": { "start": { "local": "2001-03-08T16:33:47+01:00", "utc": "2001-03-08T15:33:47Z", "ms": 984065626933.3286 }, "end": { "local": "2001-03-08T18:58:09+01:00", "utc": "2001-03-08T17:58:09Z", "ms": 984074289402.8539 } }, "covered_min": 0, "window_min": 144, "qualifies": false }, { "local_date": "2001-03-09", "window": { "start": { "local": "2001-03-09T16:33:38+01:00", "utc": "2001-03-09T15:33:38Z", "ms": 984152018115.9307 }, "end": { "local": "2001-03-09T18:58:05+01:00", "utc": "2001-03-09T17:58:05Z", "ms": 984160684776.8798 } }, "covered_min": 109, "window_min": 144, "qualifies": true } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2001-03-09", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:51 on Thu 8 Mar to 18:23 on Fri 9 Mar.", "fact": "2001-03-08T20:50:56Z → 2001-03-09T17:23:04Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:34–18:58 on the 8th, 16:34–18:58 on the 9th.", "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 144 minutes on the 8th and 109 of 144 on the 9th.", "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 2101 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Friday 9 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Lagos, 2001: Saturday 10 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": "2001-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-10", "confidence": "determinate" } ], "quote": "In Lagos, Holī 2001 falls on Saturday 10 March. It is kept the day after Holikā Dahana, which falls on Friday 9 March. Pūrṇimā runs from 21:51 on Thu 8 Mar to 18:23 on Fri 9 Mar and covers 109 of 144 minutes of sāyāhna on the 9th.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29576, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 }, "end": { "local": "2001-03-10T15:08:22+01:00", "utc": "2001-03-10T14:08:22Z", "ms": 984233301975.9557 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-09T18:23:04+01:00", "utc": "2001-03-09T17:23:04Z", "ms": 984158583661.5175 }, "end": { "local": "2001-03-10T15:08:22+01:00", "utc": "2001-03-10T14:08:22Z", "ms": 984233301975.9557 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-03-09", "window": { "start": { "local": "2001-03-09T06:55:51+01:00", "utc": "2001-03-09T05:55:51Z", "ms": 984117351472.134 }, "end": { "local": "2001-03-09T06:55:51+01:00", "utc": "2001-03-09T05:55:51Z", "ms": 984117351472.134 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-03-10", "window": { "start": { "local": "2001-03-10T06:55:26+01:00", "utc": "2001-03-10T05:55:26Z", "ms": 984203725512.3483 }, "end": { "local": "2001-03-10T06:55:26+01:00", "utc": "2001-03-10T05:55:26Z", "ms": 984203725512.3483 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 18:23 on Fri 9 Mar to 15:08 on Sat 10 Mar.", "fact": "2001-03-09T17:23:04Z → 2001-03-10T14:08:22Z" }, { "step": "kaala", "text": "Sunrise is at 06:56 on the 9th and 06:55 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 29576 s" }, { "step": "ruling", "text": "Vasantotsava, Lagos, 2001: Saturday 10 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": "2001-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-10", "confidence": "determinate" } ], "quote": "In Lagos, Vasantotsava 2001 falls on Saturday 10 March. Pratipadā runs from 18:23 on Fri 9 Mar to 15:08 on Sat 10 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-03-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38552, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-03-12T10:01:23+01:00", "utc": "2001-03-12T09:01:23Z", "ms": 984387682994.2626 }, "end": { "local": "2001-03-13T08:28:28+01:00", "utc": "2001-03-13T07:28:28Z", "ms": 984468507807.7572 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-12T10:01:23+01:00", "utc": "2001-03-12T09:01:23Z", "ms": 984387682994.2626 }, "end": { "local": "2001-03-13T08:28:28+01:00", "utc": "2001-03-13T07:28:28Z", "ms": 984468507807.7572 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-03-11", "window": { "start": { "local": "2001-03-11T20:53:24+01:00", "utc": "2001-03-11T19:53:24Z", "ms": 984340403923.4648 }, "end": { "local": "2001-03-11T20:53:24+01:00", "utc": "2001-03-11T19:53:24Z", "ms": 984340403923.4648 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-03-12", "window": { "start": { "local": "2001-03-12T21:45:56+01:00", "utc": "2001-03-12T20:45:56Z", "ms": 984429955968.1346 }, "end": { "local": "2001-03-12T21:45:56+01:00", "utc": "2001-03-12T20:45:56Z", "ms": 984429955968.1346 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:01 on Mon 12 Mar to 08:28 on Tue 13 Mar.", "fact": "2001-03-12T09:01:23Z → 2001-03-13T07:28:28Z" }, { "step": "kaala", "text": "Moonrise is at 20:53 on the 11th and 21:46 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38552 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Monday 12 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": "2001-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-12", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Monday 12 March. Caturthī runs from 10:01 on Mon 12 Mar to 08:28 on Tue 13 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6459, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-03-16T08:57:05+01:00", "utc": "2001-03-16T07:57:05Z", "ms": 984729425319.0514 }, "end": { "local": "2001-03-17T10:43:08+01:00", "utc": "2001-03-17T09:43:08Z", "ms": 984822188077.0996 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-16T08:57:05+01:00", "utc": "2001-03-16T07:57:05Z", "ms": 984729425319.0514 }, "end": { "local": "2001-03-17T10:43:08+01:00", "utc": "2001-03-17T09:43:08Z", "ms": 984822188077.0996 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-16", "window": { "start": { "local": "2001-03-16T12:31:04+01:00", "utc": "2001-03-16T11:31:04Z", "ms": 984742263994.2365 }, "end": { "local": "2001-03-16T13:19:04+01:00", "utc": "2001-03-16T12:19:04Z", "ms": 984745143994.2365 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-17", "window": { "start": { "local": "2001-03-17T12:30:47+01:00", "utc": "2001-03-17T11:30:47Z", "ms": 984828646762.7051 }, "end": { "local": "2001-03-17T13:18:47+01:00", "utc": "2001-03-17T12:18:47Z", "ms": 984831526762.7051 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:57 on Fri 16 Mar to 10:43 on Sat 17 Mar.", "fact": "2001-03-16T07:57:05Z → 2001-03-17T09:43:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 16th, 12:31–13:19 on the 17th.", "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 16th and 0 of 48 on the 17th.", "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 6459 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Lagos, 2001: Friday 16 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": "2001-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-16", "confidence": "determinate" } ], "quote": "In Lagos, Śītalāṣṭamī 2001 falls on Friday 16 March. Aṣṭamī runs from 08:57 on Fri 16 Mar to 10:43 on Sat 17 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-03-20", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31749, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-03-19T15:40:28+01:00", "utc": "2001-03-19T14:40:28Z", "ms": 985012828091.617 }, "end": { "local": "2001-03-20T18:22:30+01:00", "utc": "2001-03-20T17:22:30Z", "ms": 985108949747.8032 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-19T15:40:28+01:00", "utc": "2001-03-19T14:40:28Z", "ms": 985012828091.617 }, "end": { "local": "2001-03-20T18:22:30+01:00", "utc": "2001-03-20T17:22:30Z", "ms": 985108949747.8032 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-03-19", "window": { "start": { "local": "2001-03-19T06:51:19+01:00", "utc": "2001-03-19T05:51:19Z", "ms": 984981079095.5042 }, "end": { "local": "2001-03-19T06:51:19+01:00", "utc": "2001-03-19T05:51:19Z", "ms": 984981079095.5042 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-03-20", "window": { "start": { "local": "2001-03-20T06:50:51+01:00", "utc": "2001-03-20T05:50:51Z", "ms": 985067450719.5209 }, "end": { "local": "2001-03-20T06:50:51+01:00", "utc": "2001-03-20T05:50:51Z", "ms": 985067450719.5209 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:40 on Mon 19 Mar to 18:22 on Tue 20 Mar.", "fact": "2001-03-19T14:40:28Z → 2001-03-20T17:22:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:51 on the 19th and 06:51 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 19th and is on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31749 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Lagos, 2001: Tuesday 20 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": "2001-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-20", "confidence": "determinate" } ], "quote": "In Lagos, Pāpamocanī Ekādaśī 2001 falls on Tuesday 20 March. Ekādaśī runs from 15:40 on Mon 19 Mar to 18:22 on Tue 20 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-03-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-03-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1407, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-03-21T20:55:21+01:00", "utc": "2001-03-21T19:55:21Z", "ms": 985204521466.2108 }, "end": { "local": "2001-03-22T23:09:21+01:00", "utc": "2001-03-22T22:09:21Z", "ms": 985298961093.5729 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-21T20:55:21+01:00", "utc": "2001-03-21T19:55:21Z", "ms": 985204521466.2108 }, "end": { "local": "2001-03-22T23:09:21+01:00", "utc": "2001-03-22T22:09:21Z", "ms": 985298961093.5729 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-03-21", "window": { "start": { "local": "2001-03-21T18:56:50+01:00", "utc": "2001-03-21T17:56:50Z", "ms": 985197410443.3018 }, "end": { "local": "2001-03-21T20:31:55+01:00", "utc": "2001-03-21T19:31:55Z", "ms": 985203114867.5409 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "2001-03-22", "window": { "start": { "local": "2001-03-22T18:56:43+01:00", "utc": "2001-03-22T17:56:43Z", "ms": 985283803262 }, "end": { "local": "2001-03-22T20:31:45+01:00", "utc": "2001-03-22T19:31:45Z", "ms": 985289504819.869 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:55 on Wed 21 Mar to 23:09 on Thu 22 Mar.", "fact": "2001-03-21T19:55:21Z → 2001-03-22T22:09:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:57–20:32 on the 21st, 18:57–20:32 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 21st and 95 of 95 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1407 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Thursday 22 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": "2001-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-22", "confidence": "boundary" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Thursday 22 March. Trayodaśī runs from 20:55 on Wed 21 Mar to 23:09 on Thu 22 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-03-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-03-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-22", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1085, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-03-22T23:09:21+01:00", "utc": "2001-03-22T22:09:21Z", "ms": 985298961093.5729 }, "end": { "local": "2001-03-24T00:58:41+01:00", "utc": "2001-03-23T23:58:41Z", "ms": 985391920685.2036 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-22T23:09:21+01:00", "utc": "2001-03-22T22:09:21Z", "ms": 985298961093.5729 }, "end": { "local": "2001-03-24T00:58:41+01:00", "utc": "2001-03-23T23:58:41Z", "ms": 985391920685.2036 } }, "kaala": "nishita", "days": [ { "local_date": "2001-03-22", "window": { "start": { "local": "2001-03-23T00:29:04+01:00", "utc": "2001-03-22T23:29:04Z", "ms": 985303744104.0088 }, "end": { "local": "2001-03-23T01:17:04+01:00", "utc": "2001-03-23T00:17:04Z", "ms": 985306624104.0088 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-23", "window": { "start": { "local": "2001-03-24T00:28:46+01:00", "utc": "2001-03-23T23:28:46Z", "ms": 985390126106.805 }, "end": { "local": "2001-03-24T01:16:46+01:00", "utc": "2001-03-24T00:16:46Z", "ms": 985393006106.805 } }, "covered_min": 30, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:09 on Thu 22 Mar to 00:59 on Sat 24 Mar.", "fact": "2001-03-22T22:09:21Z → 2001-03-23T23:58:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:29–01:17 on the 22nd, 00:29–01:17 on the 23rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 22nd and 30 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1085 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Thursday 22 March.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-03-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-22", "confidence": "boundary" } ], "quote": "In Lagos, Śivarātri 2001 falls on Thursday 22 March. Caturdaśī runs from 23:09 on Thu 22 Mar to 00:59 on Sat 24 Mar and covers all of niśītha that night. It also reaches the next night for 30 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/lagos/festivals/2001/shivaratri?on=2001-03-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33098, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-03-25T02:21:00+01:00", "utc": "2001-03-25T01:21:00Z", "ms": 985483260137.3949 }, "end": { "local": "2001-03-26T03:16:28+01:00", "utc": "2001-03-26T02:16:28Z", "ms": 985572987792.0065 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-25T02:21:00+01:00", "utc": "2001-03-25T01:21:00Z", "ms": 985483260137.3949 }, "end": { "local": "2001-03-26T03:16:28+01:00", "utc": "2001-03-26T02:16:28Z", "ms": 985572987792.0065 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-25", "window": { "start": { "local": "2001-03-25T12:28:24+01:00", "utc": "2001-03-25T11:28:24Z", "ms": 985519704384.227 }, "end": { "local": "2001-03-25T13:16:24+01:00", "utc": "2001-03-25T12:16:24Z", "ms": 985522584384.227 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-26", "window": { "start": { "local": "2001-03-26T12:28:06+01:00", "utc": "2001-03-26T11:28:06Z", "ms": 985606086291.3405 }, "end": { "local": "2001-03-26T13:16:06+01:00", "utc": "2001-03-26T12:16:06Z", "ms": 985608966291.3405 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:21 on Sun 25 Mar to 03:16 on Mon 26 Mar.", "fact": "2001-03-25T01:21:00Z → 2001-03-26T02:16:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 25th, 12:28–13:16 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33098 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Lagos, 2001: Sunday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-25", "confidence": "determinate" } ], "quote": "In Lagos, Navarātrārambha (Caitra) (Chaitra Navratri) 2001 falls on Sunday 25 March. Pratipadā runs from 02:21 on Sun 25 Mar to 03:16 on Mon 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30872, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-03-27T03:46:32+01:00", "utc": "2001-03-27T02:46:32Z", "ms": 985661191684.0541 }, "end": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-27T03:46:32+01:00", "utc": "2001-03-27T02:46:32Z", "ms": 985661191684.0541 }, "end": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-27", "window": { "start": { "local": "2001-03-27T12:27:48+01:00", "utc": "2001-03-27T11:27:48Z", "ms": 985692468189.8207 }, "end": { "local": "2001-03-27T13:15:48+01:00", "utc": "2001-03-27T12:15:48Z", "ms": 985695348189.8207 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-28", "window": { "start": { "local": "2001-03-28T12:27:30+01:00", "utc": "2001-03-28T11:27:30Z", "ms": 985778850096.2397 }, "end": { "local": "2001-03-28T13:15:30+01:00", "utc": "2001-03-28T12:15:30Z", "ms": 985781730096.2397 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:47 on Tue 27 Mar to 03:53 on Wed 28 Mar.", "fact": "2001-03-27T02:46:32Z → 2001-03-28T02:52:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 27th, 12:28–13:16 on the 28th.", "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 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30872 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Lagos, 2001: Tuesday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-27", "confidence": "determinate" } ], "quote": "In Lagos, Gaurī Tṛtīyā (Gangaur) 2001 falls on Tuesday 27 March. Tṛtīyā runs from 03:47 on Tue 27 Mar to 03:53 on Wed 28 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30872, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-03-27T03:46:32+01:00", "utc": "2001-03-27T02:46:32Z", "ms": 985661191684.0541 }, "end": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-27T03:46:32+01:00", "utc": "2001-03-27T02:46:32Z", "ms": 985661191684.0541 }, "end": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-27", "window": { "start": { "local": "2001-03-27T12:27:48+01:00", "utc": "2001-03-27T11:27:48Z", "ms": 985692468189.8207 }, "end": { "local": "2001-03-27T13:15:48+01:00", "utc": "2001-03-27T12:15:48Z", "ms": 985695348189.8207 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-28", "window": { "start": { "local": "2001-03-28T12:27:30+01:00", "utc": "2001-03-28T11:27:30Z", "ms": 985778850096.2397 }, "end": { "local": "2001-03-28T13:15:30+01:00", "utc": "2001-03-28T12:15:30Z", "ms": 985781730096.2397 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:47 on Tue 27 Mar to 03:53 on Wed 28 Mar.", "fact": "2001-03-27T02:46:32Z → 2001-03-28T02:52:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 27th, 12:28–13:16 on the 28th.", "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 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30872 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Lagos, 2001: Tuesday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-27", "confidence": "determinate" } ], "quote": "In Lagos, Saubhāgya Śayana Vrata 2001 falls on Tuesday 27 March. Tṛtīyā runs from 03:47 on Tue 27 Mar to 03:53 on Wed 28 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-03-28", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30872, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 }, "end": { "local": "2001-03-29T03:37:09+01:00", "utc": "2001-03-29T02:37:09Z", "ms": 985833429071.6235 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-28T03:52:58+01:00", "utc": "2001-03-28T02:52:58Z", "ms": 985747978341.529 }, "end": { "local": "2001-03-29T03:37:09+01:00", "utc": "2001-03-29T02:37:09Z", "ms": 985833429071.6235 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-28", "window": { "start": { "local": "2001-03-28T12:27:30+01:00", "utc": "2001-03-28T11:27:30Z", "ms": 985778850096.2397 }, "end": { "local": "2001-03-28T13:15:30+01:00", "utc": "2001-03-28T12:15:30Z", "ms": 985781730096.2397 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-29", "window": { "start": { "local": "2001-03-29T12:27:12+01:00", "utc": "2001-03-29T11:27:12Z", "ms": 985865232027.2283 }, "end": { "local": "2001-03-29T13:15:12+01:00", "utc": "2001-03-29T12:15:12Z", "ms": 985868112027.2283 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:53 on Wed 28 Mar to 03:37 on Thu 29 Mar.", "fact": "2001-03-28T02:52:58Z → 2001-03-29T02:37:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 28th, 12:27–13:15 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30872 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Wednesday 28 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": "2001-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-28", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Wednesday 28 March. Caturthī runs from 03:53 on Wed 28 Mar to 03:37 on Thu 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-03-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31803, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-03-29T03:37:09+01:00", "utc": "2001-03-29T02:37:09Z", "ms": 985833429071.6235 }, "end": { "local": "2001-03-30T02:59:39+01:00", "utc": "2001-03-30T01:59:39Z", "ms": 985917578689.7644 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-03-29T03:37:09+01:00", "utc": "2001-03-29T02:37:09Z", "ms": 985833429071.6235 }, "end": { "local": "2001-03-30T02:59:39+01:00", "utc": "2001-03-30T01:59:39Z", "ms": 985917578689.7644 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-29", "window": { "start": { "local": "2001-03-29T12:27:12+01:00", "utc": "2001-03-29T11:27:12Z", "ms": 985865232027.2283 }, "end": { "local": "2001-03-29T13:15:12+01:00", "utc": "2001-03-29T12:15:12Z", "ms": 985868112027.2283 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-03-30", "window": { "start": { "local": "2001-03-30T12:26:54+01:00", "utc": "2001-03-30T11:26:54Z", "ms": 985951613999.6296 }, "end": { "local": "2001-03-30T13:14:54+01:00", "utc": "2001-03-30T12:14:54Z", "ms": 985954493999.6296 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:37 on Thu 29 Mar to 03:00 on Fri 30 Mar.", "fact": "2001-03-29T02:37:09Z → 2001-03-30T01:59:39Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31803 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Lagos, 2001: Thursday 29 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-03-29", "confidence": "determinate" } ], "quote": "In Lagos, Lakṣmī Pañcamī 2001 falls on Thursday 29 March. Pañcamī runs from 03:37 on Thu 29 Mar to 03:00 on Fri 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34798, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-04-01T00:38:36+01:00", "utc": "2001-03-31T23:38:36Z", "ms": 986081915534.9192 }, "end": { "local": "2001-04-01T22:54:16+01:00", "utc": "2001-04-01T21:54:16Z", "ms": 986162055746.1686 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-01T00:38:36+01:00", "utc": "2001-03-31T23:38:36Z", "ms": 986081915534.9192 }, "end": { "local": "2001-04-01T22:54:16+01:00", "utc": "2001-04-01T21:54:16Z", "ms": 986162055746.1686 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-03-31", "window": { "start": { "local": "2001-03-31T12:26:36+01:00", "utc": "2001-03-31T11:26:36Z", "ms": 986037996030.666 }, "end": { "local": "2001-03-31T13:14:36+01:00", "utc": "2001-03-31T12:14:36Z", "ms": 986040876030.666 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-04-01", "window": { "start": { "local": "2001-04-01T12:26:18+01:00", "utc": "2001-04-01T11:26:18Z", "ms": 986124378138.0391 }, "end": { "local": "2001-04-01T13:14:18+01:00", "utc": "2001-04-01T12:14:18Z", "ms": 986127258138.0391 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 00:39 on Sun 1 Apr to 22:54 on Sun 1 Apr.", "fact": "2001-03-31T23:38:36Z → 2001-04-01T21:54:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 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": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34798 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Lagos, 2001: Sunday 1 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": "2001-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-01", "confidence": "determinate" } ], "quote": "In Lagos, Bhavānī Utpatti 2001 falls on Sunday 1 April. Aṣṭamī runs from 00:39 on Sun 1 Apr to 22:54 on Sun 1 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27236, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2001-04-01T22:54:16+01:00", "utc": "2001-04-01T21:54:16Z", "ms": 986162055746.1686 }, "end": { "local": "2001-04-02T20:47:56+01:00", "utc": "2001-04-02T19:47:56Z", "ms": 986240875927.6324 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-01T22:54:16+01:00", "utc": "2001-04-01T21:54:16Z", "ms": 986162055746.1686 }, "end": { "local": "2001-04-02T20:47:56+01:00", "utc": "2001-04-02T19:47:56Z", "ms": 986240875927.6324 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-01", "window": { "start": { "local": "2001-04-01T12:26:18+01:00", "utc": "2001-04-01T11:26:18Z", "ms": 986124378138.0391 }, "end": { "local": "2001-04-01T13:14:18+01:00", "utc": "2001-04-01T12:14:18Z", "ms": 986127258138.0391 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-04-02", "window": { "start": { "local": "2001-04-02T12:26:00+01:00", "utc": "2001-04-02T11:26:00Z", "ms": 986210760340.2397 }, "end": { "local": "2001-04-02T13:14:00+01:00", "utc": "2001-04-02T12:14:00Z", "ms": 986213640340.2397 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 22:54 on Sun 1 Apr to 20:48 on Mon 2 Apr.", "fact": "2001-04-01T21:54:16Z → 2001-04-02T19:47:56Z" }, { "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": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27236 s" }, { "step": "ruling", "text": "Rāma Navamī, Lagos, 2001: Monday 2 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": "2001-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-02", "confidence": "determinate" } ], "quote": "In Lagos, Rāma Navamī 2001 falls on Monday 2 April. Navamī runs from 22:54 on Sun 1 Apr to 20:48 on Mon 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-04-04", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32132, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-04-03T18:21:39+01:00", "utc": "2001-04-03T17:21:39Z", "ms": 986318499321.4187 }, "end": { "local": "2001-04-04T15:39:13+01:00", "utc": "2001-04-04T14:39:13Z", "ms": 986395153361.8864 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-03T18:21:39+01:00", "utc": "2001-04-03T17:21:39Z", "ms": 986318499321.4187 }, "end": { "local": "2001-04-04T15:39:13+01:00", "utc": "2001-04-04T14:39:13Z", "ms": 986395153361.8864 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-04-03", "window": { "start": { "local": "2001-04-03T06:44:10+01:00", "utc": "2001-04-03T05:44:10Z", "ms": 986276649523.6816 }, "end": { "local": "2001-04-03T06:44:10+01:00", "utc": "2001-04-03T05:44:10Z", "ms": 986276649523.6816 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-04-04", "window": { "start": { "local": "2001-04-04T06:43:41+01:00", "utc": "2001-04-04T05:43:41Z", "ms": 986363021353.9027 }, "end": { "local": "2001-04-04T06:43:41+01:00", "utc": "2001-04-04T05:43:41Z", "ms": 986363021353.9027 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:22 on Tue 3 Apr to 15:39 on Wed 4 Apr.", "fact": "2001-04-03T17:21:39Z → 2001-04-04T14:39:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:44 on the 3rd and 06:44 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32132 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Lagos, 2001: Wednesday 4 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": "2001-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-04", "confidence": "determinate" } ], "quote": "In Lagos, Kāmadā Ekādaśī 2001 falls on Wednesday 4 April. Ekādaśī runs from 18:22 on Tue 3 Apr to 15:39 on Wed 4 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-04-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1265, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-04-05T12:46:13+01:00", "utc": "2001-04-05T11:46:13Z", "ms": 986471172894.3433 }, "end": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-05T12:46:13+01:00", "utc": "2001-04-05T11:46:13Z", "ms": 986471172894.3433 }, "end": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-05", "window": { "start": { "local": "2001-04-05T12:25:08+01:00", "utc": "2001-04-05T11:25:08Z", "ms": 986469907714.6321 }, "end": { "local": "2001-04-05T13:13:08+01:00", "utc": "2001-04-05T12:13:08Z", "ms": 986472787714.6321 } }, "covered_min": 27, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-06", "window": { "start": { "local": "2001-04-06T12:24:50+01:00", "utc": "2001-04-06T11:24:50Z", "ms": 986556290499.3961 }, "end": { "local": "2001-04-06T13:12:50+01:00", "utc": "2001-04-06T12:12:50Z", "ms": 986559170499.3961 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:46 on Thu 5 Apr to 09:50 on Fri 6 Apr.", "fact": "2001-04-05T11:46:13Z → 2001-04-06T08:49:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 5th, 12:25–13:13 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 27 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1265 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Lagos, 2001: Thursday 5 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": "2001-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-05", "confidence": "determinate" } ], "quote": "In Lagos, Anaṅga Trayodaśī 2001 falls on Thursday 5 April. Trayodaśī runs from 12:46 on Thu 5 Apr to 09:50 on Fri 6 Apr and covers 27 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-04-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22129, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-04-05T12:46:13+01:00", "utc": "2001-04-05T11:46:13Z", "ms": 986471172894.3433 }, "end": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-05T12:46:13+01:00", "utc": "2001-04-05T11:46:13Z", "ms": 986471172894.3433 }, "end": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-04-05", "window": { "start": { "local": "2001-04-05T18:55:02+01:00", "utc": "2001-04-05T17:55:02Z", "ms": 986493302069.8881 }, "end": { "local": "2001-04-05T20:29:24+01:00", "utc": "2001-04-05T19:29:24Z", "ms": 986498963869.078 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "2001-04-06", "window": { "start": { "local": "2001-04-06T18:54:55+01:00", "utc": "2001-04-06T17:54:55Z", "ms": 986579695434.9795 }, "end": { "local": "2001-04-06T20:29:14+01:00", "utc": "2001-04-06T19:29:14Z", "ms": 986585354442.5059 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:46 on Thu 5 Apr to 09:50 on Fri 6 Apr.", "fact": "2001-04-05T11:46:13Z → 2001-04-06T08:49:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:55–20:29 on the 5th, 18:55–20:29 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 5th and 0 of 94 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22129 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Thursday 5 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": "2001-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-05", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Thursday 5 April. Trayodaśī runs from 12:46 on Thu 5 Apr to 09:50 on Fri 6 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9300, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 }, "end": { "local": "2001-04-07T06:58:36+01:00", "utc": "2001-04-07T05:58:36Z", "ms": 986623115992.9094 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-06T09:49:50+01:00", "utc": "2001-04-06T08:49:50Z", "ms": 986546990303.2573 }, "end": { "local": "2001-04-07T06:58:36+01:00", "utc": "2001-04-07T05:58:36Z", "ms": 986623115992.9094 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-06", "window": { "start": { "local": "2001-04-06T12:24:50+01:00", "utc": "2001-04-06T11:24:50Z", "ms": 986556290499.3961 }, "end": { "local": "2001-04-06T13:12:50+01:00", "utc": "2001-04-06T12:12:50Z", "ms": 986559170499.3961 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-07", "window": { "start": { "local": "2001-04-07T12:24:33+01:00", "utc": "2001-04-07T11:24:33Z", "ms": 986642673484.5432 }, "end": { "local": "2001-04-07T13:12:33+01:00", "utc": "2001-04-07T12:12:33Z", "ms": 986645553484.5432 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:50 on Fri 6 Apr to 06:59 on Sat 7 Apr.", "fact": "2001-04-06T08:49:50Z → 2001-04-07T05:58:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 6th, 12:25–13:13 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 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 9300 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Lagos, 2001: Friday 6 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": "2001-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-06", "confidence": "determinate" } ], "quote": "In Lagos, Viṣṇudamanaka Caturdaśī 2001 falls on Friday 6 April. Caturdaśī runs from 09:50 on Fri 6 Apr to 06:59 on Sat 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19557, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-04-07T06:58:36+01:00", "utc": "2001-04-07T05:58:36Z", "ms": 986623115992.9094 }, "end": { "local": "2001-04-08T04:21:52+01:00", "utc": "2001-04-08T03:21:52Z", "ms": 986700111606.8807 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2001-04-07T06:58:36+01:00", "utc": "2001-04-07T05:58:36Z", "ms": 986623115992.9094 }, "end": { "local": "2001-04-08T04:21:52+01:00", "utc": "2001-04-08T03:21:52Z", "ms": 986700111606.8807 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-07", "window": { "start": { "local": "2001-04-07T12:24:33+01:00", "utc": "2001-04-07T11:24:33Z", "ms": 986642673484.5432 }, "end": { "local": "2001-04-07T13:12:33+01:00", "utc": "2001-04-07T12:12:33Z", "ms": 986645553484.5432 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-08", "window": { "start": { "local": "2001-04-08T12:24:17+01:00", "utc": "2001-04-08T11:24:17Z", "ms": 986729056692.6224 }, "end": { "local": "2001-04-08T13:12:17+01:00", "utc": "2001-04-08T12:12:17Z", "ms": 986731936692.6224 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:59 on Sat 7 Apr to 04:22 on Sun 8 Apr.", "fact": "2001-04-07T05:58:36Z → 2001-04-08T03:21:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 7th, 12:24–13:12 on the 8th.", "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 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: paraviddha → only-day · margin 19557 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Lagos, 2001: Saturday 7 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": "2001-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-07", "confidence": "determinate" } ], "quote": "In Lagos, Caitrī Pūrṇimā 2001 falls on Saturday 7 April. Pūrṇimā runs from 06:59 on Sat 7 Apr to 04:22 on Sun 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-04-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4279, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-04-10T23:32:04+01:00", "utc": "2001-04-10T22:32:04Z", "ms": 986941924381.8577 }, "end": { "local": "2001-04-11T23:20:47+01:00", "utc": "2001-04-11T22:20:47Z", "ms": 987027646691.6304 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-10T23:32:04+01:00", "utc": "2001-04-10T22:32:04Z", "ms": 986941924381.8577 }, "end": { "local": "2001-04-11T23:20:47+01:00", "utc": "2001-04-11T22:20:47Z", "ms": 987027646691.6304 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-04-10", "window": { "start": { "local": "2001-04-10T21:16:40+01:00", "utc": "2001-04-10T20:16:40Z", "ms": 986933799853.8077 }, "end": { "local": "2001-04-10T21:16:40+01:00", "utc": "2001-04-10T20:16:40Z", "ms": 986933799853.8077 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-04-11", "window": { "start": { "local": "2001-04-11T22:09:27+01:00", "utc": "2001-04-11T21:09:27Z", "ms": 987023367362.7448 }, "end": { "local": "2001-04-11T22:09:27+01:00", "utc": "2001-04-11T21:09:27Z", "ms": 987023367362.7448 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:32 on Tue 10 Apr to 23:21 on Wed 11 Apr.", "fact": "2001-04-10T22:32:04Z → 2001-04-11T22:20:47Z" }, { "step": "kaala", "text": "Moonrise is at 21:17 on the 10th and 22:09 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4279 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Wednesday 11 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": "2001-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-11", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Wednesday 11 April. Caturthī runs from 23:32 on Tue 10 Apr to 23:21 on Wed 11 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41248, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2001-04-13T19:11:45+01:00", "utc": "2001-04-13T18:11:45Z", "ms": 987185505245.0591 }, "end": { "local": "2001-05-14T16:04:25+01:00", "utc": "2001-05-14T15:04:25Z", "ms": 989852665298.1919 } }, "span": { "of": "transit", "start": { "local": "2001-04-13T19:11:45+01:00", "utc": "2001-04-13T18:11:45Z", "ms": 987185505245.0591 }, "end": { "local": "2001-04-13T19:11:45+01:00", "utc": "2001-04-13T18:11:45Z", "ms": 987185505245.0591 } }, "kaala": "day", "days": [ { "local_date": "2001-04-13", "window": { "start": { "local": "2001-04-13T06:39:39+01:00", "utc": "2001-04-13T05:39:39Z", "ms": 987140378573.0159 }, "end": { "local": "2001-04-14T06:39:13+01:00", "utc": "2001-04-14T05:39:13Z", "ms": 987226753211.9495 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "2001-04-14", "window": { "start": { "local": "2001-04-14T06:39:13+01:00", "utc": "2001-04-14T05:39:13Z", "ms": 987226753211.9495 }, "end": { "local": "2001-04-15T06:38:48+01:00", "utc": "2001-04-15T05:38:48Z", "ms": 987313128249.5234 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 19:12 on Fri 13 Apr.", "fact": "2001-04-13T18:11:45Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:40 on the 13th, and from 06:39 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 41248 s" }, { "step": "ruling", "text": "Vaiśākhī, Lagos, 2001: Friday 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": "2001-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2001-04-13", "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": "2001-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Lagos, Vaiśākhī 2001 falls on Friday 13 April. The Sun enters Meṣa at 19:12 on Fri 13 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-04-19", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15110, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-04-18T10:49:26+01:00", "utc": "2001-04-18T09:49:26Z", "ms": 987587365966.1614 }, "end": { "local": "2001-04-19T12:59:15+01:00", "utc": "2001-04-19T11:59:15Z", "ms": 987681554592.8326 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-18T10:49:26+01:00", "utc": "2001-04-18T09:49:26Z", "ms": 987587365966.1614 }, "end": { "local": "2001-04-19T12:59:15+01:00", "utc": "2001-04-19T11:59:15Z", "ms": 987681554592.8326 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-04-18", "window": { "start": { "local": "2001-04-18T06:37:36+01:00", "utc": "2001-04-18T05:37:36Z", "ms": 987572255930.3864 }, "end": { "local": "2001-04-18T06:37:36+01:00", "utc": "2001-04-18T05:37:36Z", "ms": 987572255930.3864 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-04-19", "window": { "start": { "local": "2001-04-19T06:37:13+01:00", "utc": "2001-04-19T05:37:13Z", "ms": 987658632735.0009 }, "end": { "local": "2001-04-19T06:37:13+01:00", "utc": "2001-04-19T05:37:13Z", "ms": 987658632735.0009 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:49 on Wed 18 Apr to 12:59 on Thu 19 Apr.", "fact": "2001-04-18T09:49:26Z → 2001-04-19T11:59:15Z" }, { "step": "kaala", "text": "Sunrise is at 06:38 on the 18th and 06:37 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15110 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Lagos, 2001: Thursday 19 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": "2001-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-19", "confidence": "determinate" } ], "quote": "In Lagos, Varūthinī Ekādaśī 2001 falls on Thursday 19 April. Ekādaśī runs from 10:49 on Wed 18 Apr to 12:59 on Thu 19 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-04-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-04-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11086, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-04-20T14:40:43+01:00", "utc": "2001-04-20T13:40:43Z", "ms": 987774043085.1733 }, "end": { "local": "2001-04-21T15:49:02+01:00", "utc": "2001-04-21T14:49:02Z", "ms": 987864541637.388 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-20T14:40:43+01:00", "utc": "2001-04-20T13:40:43Z", "ms": 987774043085.1733 }, "end": { "local": "2001-04-21T15:49:02+01:00", "utc": "2001-04-21T14:49:02Z", "ms": 987864541637.388 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-04-20", "window": { "start": { "local": "2001-04-20T18:53:49+01:00", "utc": "2001-04-20T17:53:49Z", "ms": 987789229377.3254 }, "end": { "local": "2001-04-20T20:27:31+01:00", "utc": "2001-04-20T19:27:31Z", "ms": 987794850500.535 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "2001-04-21", "window": { "start": { "local": "2001-04-21T18:53:47+01:00", "utc": "2001-04-21T17:53:47Z", "ms": 987875627151.8536 }, "end": { "local": "2001-04-21T20:27:26+01:00", "utc": "2001-04-21T19:27:26Z", "ms": 987881245676.9995 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:41 on Fri 20 Apr to 15:49 on Sat 21 Apr.", "fact": "2001-04-20T13:40:43Z → 2001-04-21T14:49:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:28 on the 20th, 18:54–20:27 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 20th and 0 of 94 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11086 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Friday 20 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": "2001-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-20", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Friday 20 April. Trayodaśī runs from 14:41 on Fri 20 Apr to 15:49 on Sat 21 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-04-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28647, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-04-21T15:49:02+01:00", "utc": "2001-04-21T14:49:02Z", "ms": 987864541637.388 }, "end": { "local": "2001-04-22T16:23:18+01:00", "utc": "2001-04-22T15:23:18Z", "ms": 987952998322.1122 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-21T15:49:02+01:00", "utc": "2001-04-21T14:49:02Z", "ms": 987864541637.388 }, "end": { "local": "2001-04-22T16:23:18+01:00", "utc": "2001-04-22T15:23:18Z", "ms": 987952998322.1122 } }, "kaala": "nishita", "days": [ { "local_date": "2001-04-21", "window": { "start": { "local": "2001-04-22T00:20:57+01:00", "utc": "2001-04-21T23:20:57Z", "ms": 987895256621.1506 }, "end": { "local": "2001-04-22T01:08:57+01:00", "utc": "2001-04-22T00:08:57Z", "ms": 987898136621.1506 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-22", "window": { "start": { "local": "2001-04-23T00:20:45+01:00", "utc": "2001-04-22T23:20:45Z", "ms": 987981645106.636 }, "end": { "local": "2001-04-23T01:08:45+01:00", "utc": "2001-04-23T00:08:45Z", "ms": 987984525106.636 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:49 on Sat 21 Apr to 16:23 on Sun 22 Apr.", "fact": "2001-04-21T14:49:02Z → 2001-04-22T15:23:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:21–01:09 on the 21st, 00:21–01:09 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 28647 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Saturday 21 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": "2001-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-21", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Saturday 21 April. Caturdaśī runs from 15:49 on Sat 21 Apr to 16:23 on Sun 22 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-04-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13414, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-04-25T15:10:09+01:00", "utc": "2001-04-25T14:10:09Z", "ms": 988207808634.6005 }, "end": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-25T15:10:09+01:00", "utc": "2001-04-25T14:10:09Z", "ms": 988207808634.6005 }, "end": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-04-25", "window": { "start": { "local": "2001-04-25T18:53:42+01:00", "utc": "2001-04-25T17:53:42Z", "ms": 988221222172.9856 }, "end": { "local": "2001-04-25T20:27:10+01:00", "utc": "2001-04-25T19:27:10Z", "ms": 988226830491.5602 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "2001-04-26", "window": { "start": { "local": "2001-04-26T18:53:42+01:00", "utc": "2001-04-26T17:53:42Z", "ms": 988307621931.9298 }, "end": { "local": "2001-04-26T20:27:08+01:00", "utc": "2001-04-26T19:27:08Z", "ms": 988313227749.1074 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:10 on Wed 25 Apr to 14:01 on Thu 26 Apr.", "fact": "2001-04-25T14:10:09Z → 2001-04-26T13:01:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:27 on the 25th, 18:54–20:27 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 93 of 93 minutes on the 25th and 0 of 93 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13414 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Lagos, 2001: Wednesday 25 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-25", "confidence": "determinate" } ], "quote": "In Lagos, Paraśurāma Jayantī 2001 falls on Wednesday 25 April. Tṛtīyā runs from 15:10 on Wed 25 Apr to 14:01 on Thu 26 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12004, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-04-25T15:10:09+01:00", "utc": "2001-04-25T14:10:09Z", "ms": 988207808634.6005 }, "end": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-25T15:10:09+01:00", "utc": "2001-04-25T14:10:09Z", "ms": 988207808634.6005 }, "end": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 } }, "kaala": "purvahna", "days": [ { "local_date": "2001-04-25", "window": { "start": { "local": "2001-04-25T06:35:04+01:00", "utc": "2001-04-25T05:35:04Z", "ms": 988176904125.7505 }, "end": { "local": "2001-04-25T10:41:17+01:00", "utc": "2001-04-25T09:41:17Z", "ms": 988191676808.1622 } }, "covered_min": 0, "window_min": 246, "qualifies": false }, { "local_date": "2001-04-26", "window": { "start": { "local": "2001-04-26T06:34:45+01:00", "utc": "2001-04-26T05:34:45Z", "ms": 988263284562.295 }, "end": { "local": "2001-04-26T10:41:04+01:00", "utc": "2001-04-26T09:41:04Z", "ms": 988278063685.5066 } }, "covered_min": 246, "window_min": 246, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:10 on Wed 25 Apr to 14:01 on Thu 26 Apr.", "fact": "2001-04-25T14:10:09Z → 2001-04-26T13:01:07Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:35–10:41 on the 25th, 06:35–10:41 on the 26th.", "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 246 minutes on the 25th and 246 of 246 on the 26th.", "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 12004 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Lagos, 2001: Thursday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-26", "confidence": "determinate" } ], "quote": "In Lagos, Akṣaya Tṛtīyā 2001 falls on Thursday 26 April. Tṛtīyā runs from 15:10 on Wed 25 Apr to 14:01 on Thu 26 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 973, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-04-27T12:36:17+01:00", "utc": "2001-04-27T11:36:17Z", "ms": 988371377274.4899 }, "end": { "local": "2001-04-28T10:58:22+01:00", "utc": "2001-04-28T09:58:22Z", "ms": 988451901742.6257 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-27T12:36:17+01:00", "utc": "2001-04-27T11:36:17Z", "ms": 988371377274.4899 }, "end": { "local": "2001-04-28T10:58:22+01:00", "utc": "2001-04-28T09:58:22Z", "ms": 988451901742.6257 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-27", "window": { "start": { "local": "2001-04-27T12:20:04+01:00", "utc": "2001-04-27T11:20:04Z", "ms": 988370403829.8689 }, "end": { "local": "2001-04-27T13:08:04+01:00", "utc": "2001-04-27T12:08:04Z", "ms": 988373283829.8689 } }, "covered_min": 32, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-28", "window": { "start": { "local": "2001-04-28T12:19:55+01:00", "utc": "2001-04-28T11:19:55Z", "ms": 988456794903.6471 }, "end": { "local": "2001-04-28T13:07:55+01:00", "utc": "2001-04-28T12:07:55Z", "ms": 988459674903.6471 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:36 on Fri 27 Apr to 10:58 on Sat 28 Apr.", "fact": "2001-04-27T11:36:17Z → 2001-04-28T09:58:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 27th, 12:20–13:08 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 32 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 973 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Lagos, 2001: Friday 27 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-27", "confidence": "determinate" } ], "quote": "In Lagos, Śaṅkara Jayantī 2001 falls on Friday 27 April. Pañcamī runs from 12:36 on Fri 27 Apr to 10:58 on Sat 28 Apr and covers 32 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-04-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 973, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 }, "end": { "local": "2001-04-27T12:36:17+01:00", "utc": "2001-04-27T11:36:17Z", "ms": 988371377274.4899 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-26T14:01:07+01:00", "utc": "2001-04-26T13:01:07Z", "ms": 988290067295.8771 }, "end": { "local": "2001-04-27T12:36:17+01:00", "utc": "2001-04-27T11:36:17Z", "ms": 988371377274.4899 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-26", "window": { "start": { "local": "2001-04-26T12:20:13+01:00", "utc": "2001-04-26T11:20:13Z", "ms": 988284013247.1124 }, "end": { "local": "2001-04-26T13:08:13+01:00", "utc": "2001-04-26T12:08:13Z", "ms": 988286893247.1124 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-04-27", "window": { "start": { "local": "2001-04-27T12:20:04+01:00", "utc": "2001-04-27T11:20:04Z", "ms": 988370403829.8689 }, "end": { "local": "2001-04-27T13:08:04+01:00", "utc": "2001-04-27T12:08:04Z", "ms": 988373283829.8689 } }, "covered_min": 16, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:01 on Thu 26 Apr to 12:36 on Fri 27 Apr.", "fact": "2001-04-26T13:01:07Z → 2001-04-27T11:36:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 26th, 12:20–13:08 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 16 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 973 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Friday 27 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": "2001-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-27", "confidence": "boundary" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Friday 27 April. Caturthī runs from 14:01 on Thu 26 Apr to 12:36 on Fri 27 Apr and covers 16 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11432, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-04-29T09:09:15+01:00", "utc": "2001-04-29T08:09:15Z", "ms": 988531754503.0731 }, "end": { "local": "2001-04-30T07:10:19+01:00", "utc": "2001-04-30T06:10:19Z", "ms": 988611018708.5494 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-04-29T09:09:15+01:00", "utc": "2001-04-29T08:09:15Z", "ms": 988531754503.0731 }, "end": { "local": "2001-04-30T07:10:19+01:00", "utc": "2001-04-30T06:10:19Z", "ms": 988611018708.5494 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-04-29", "window": { "start": { "local": "2001-04-29T12:19:46+01:00", "utc": "2001-04-29T11:19:46Z", "ms": 988543186474.5496 }, "end": { "local": "2001-04-29T13:07:46+01:00", "utc": "2001-04-29T12:07:46Z", "ms": 988546066474.5496 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-04-30", "window": { "start": { "local": "2001-04-30T12:19:39+01:00", "utc": "2001-04-30T11:19:39Z", "ms": 988629578549.0083 }, "end": { "local": "2001-04-30T13:07:39+01:00", "utc": "2001-04-30T12:07:39Z", "ms": 988632458549.0083 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:09 on Sun 29 Apr to 07:10 on Mon 30 Apr.", "fact": "2001-04-29T08:09:15Z → 2001-04-30T06:10:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 29th, 12:20–13:08 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11432 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Lagos, 2001: Sunday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-04-29", "confidence": "determinate" } ], "quote": "In Lagos, Gaṅgotpatti (Ganga Saptami) 2001 falls on Sunday 29 April. Saptamī runs from 09:09 on Sun 29 Apr to 07:10 on Mon 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-05-03", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21718, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-05-03T00:30:46+01:00", "utc": "2001-05-02T23:30:46Z", "ms": 988846246004.7582 }, "end": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-03T00:30:46+01:00", "utc": "2001-05-02T23:30:46Z", "ms": 988846246004.7582 }, "end": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-05-03", "window": { "start": { "local": "2001-05-03T06:32:44+01:00", "utc": "2001-05-03T05:32:44Z", "ms": 988867963890.04 }, "end": { "local": "2001-05-03T06:32:44+01:00", "utc": "2001-05-03T05:32:44Z", "ms": 988867963890.04 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-05-04", "window": { "start": { "local": "2001-05-04T06:32:29+01:00", "utc": "2001-05-04T05:32:29Z", "ms": 988954349099.2859 }, "end": { "local": "2001-05-04T06:32:29+01:00", "utc": "2001-05-04T05:32:29Z", "ms": 988954349099.2859 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:31 on Thu 3 May to 22:13 on Thu 3 May.", "fact": "2001-05-02T23:30:46Z → 2001-05-03T21:12:31Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 3rd and 06:32 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21718 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Lagos, 2001: Thursday 3 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": "2001-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-03", "confidence": "determinate" } ], "quote": "In Lagos, Mohinī Ekādaśī 2001 falls on Thursday 3 May. Ekādaśī runs from 00:31 on Thu 3 May to 22:13 on Thu 3 May and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-05-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24717, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 }, "end": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 }, "end": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-03", "window": { "start": { "local": "2001-05-03T12:19:18+01:00", "utc": "2001-05-03T11:19:18Z", "ms": 988888757865.874 }, "end": { "local": "2001-05-03T13:07:18+01:00", "utc": "2001-05-03T12:07:18Z", "ms": 988891637865.874 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-04", "window": { "start": { "local": "2001-05-04T12:19:12+01:00", "utc": "2001-05-04T11:19:12Z", "ms": 988975152029.4839 }, "end": { "local": "2001-05-04T13:07:12+01:00", "utc": "2001-05-04T12:07:12Z", "ms": 988978032029.4839 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:13 on Thu 3 May to 19:59 on Fri 4 May.", "fact": "2001-05-03T21:12:31Z → 2001-05-04T18:59:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 3rd, 12:19–13:07 on the 4th.", "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 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 24717 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Lagos, 2001: Friday 4 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": "2001-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-04", "confidence": "determinate" } ], "quote": "In Lagos, Paraśurāma Dvādaśī 2001 falls on Friday 4 May. Dvādaśī runs from 22:13 on Thu 3 May to 19:59 on Fri 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24717, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 }, "end": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-03T22:12:31+01:00", "utc": "2001-05-03T21:12:31Z", "ms": 988924351398.4669 }, "end": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-03", "window": { "start": { "local": "2001-05-03T12:19:18+01:00", "utc": "2001-05-03T11:19:18Z", "ms": 988888757865.874 }, "end": { "local": "2001-05-03T13:07:18+01:00", "utc": "2001-05-03T12:07:18Z", "ms": 988891637865.874 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-04", "window": { "start": { "local": "2001-05-04T12:19:12+01:00", "utc": "2001-05-04T11:19:12Z", "ms": 988975152029.4839 }, "end": { "local": "2001-05-04T13:07:12+01:00", "utc": "2001-05-04T12:07:12Z", "ms": 988978032029.4839 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:13 on Thu 3 May to 19:59 on Fri 4 May.", "fact": "2001-05-03T21:12:31Z → 2001-05-04T18:59:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 3rd, 12:19–13:07 on the 4th.", "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 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 24717 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Lagos, 2001: Friday 4 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": "2001-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-04", "confidence": "determinate" } ], "quote": "In Lagos, Rukmiṇī Dvādaśī 2001 falls on Friday 4 May. Dvādaśī runs from 22:13 on Thu 3 May to 19:59 on Fri 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-05-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1673, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 }, "end": { "local": "2001-05-05T17:56:44+01:00", "utc": "2001-05-05T16:56:44Z", "ms": 989081804130.5874 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-04T19:59:09+01:00", "utc": "2001-05-04T18:59:09Z", "ms": 989002748585.6665 }, "end": { "local": "2001-05-05T17:56:44+01:00", "utc": "2001-05-05T16:56:44Z", "ms": 989081804130.5874 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-05-04", "window": { "start": { "local": "2001-05-04T18:53:55+01:00", "utc": "2001-05-04T17:53:55Z", "ms": 988998834959.6819 }, "end": { "local": "2001-05-04T20:27:02+01:00", "utc": "2001-05-04T19:27:02Z", "ms": 989004421625.6859 } }, "covered_min": 28, "window_min": 93, "qualifies": true }, { "local_date": "2001-05-05", "window": { "start": { "local": "2001-05-05T18:53:59+01:00", "utc": "2001-05-05T17:53:59Z", "ms": 989085238518.0178 }, "end": { "local": "2001-05-05T20:27:03+01:00", "utc": "2001-05-05T19:27:03Z", "ms": 989090822911.3744 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:59 on Fri 4 May to 17:57 on Sat 5 May.", "fact": "2001-05-04T18:59:09Z → 2001-05-05T16:56:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:27 on the 4th, 18:54–20:27 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 28 of 93 minutes on the 4th and 0 of 93 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1673 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Friday 4 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": "2001-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-04", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Friday 4 May. Trayodaśī runs from 19:59 on Fri 4 May to 17:57 on Sat 5 May and covers 28 of 93 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3434, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-05-05T17:56:44+01:00", "utc": "2001-05-05T16:56:44Z", "ms": 989081804130.5874 }, "end": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-05T17:56:44+01:00", "utc": "2001-05-05T16:56:44Z", "ms": 989081804130.5874 }, "end": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-05-05", "window": { "start": { "local": "2001-05-05T18:53:59+01:00", "utc": "2001-05-05T17:53:59Z", "ms": 989085238518.0178 }, "end": { "local": "2001-05-05T20:27:03+01:00", "utc": "2001-05-05T19:27:03Z", "ms": 989090822911.3744 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "2001-05-06", "window": { "start": { "local": "2001-05-06T18:54:03+01:00", "utc": "2001-05-06T17:54:03Z", "ms": 989171642521.9978 }, "end": { "local": "2001-05-06T20:27:05+01:00", "utc": "2001-05-06T19:27:05Z", "ms": 989177224672.5632 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:57 on Sat 5 May to 16:12 on Sun 6 May.", "fact": "2001-05-05T16:56:44Z → 2001-05-06T15:12:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:27 on the 5th, 18:54–20:27 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 5th and 0 of 93 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 3434 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Lagos, 2001: Saturday 5 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": "2001-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-05", "confidence": "determinate" } ], "quote": "In Lagos, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2001 falls on Saturday 5 May. Caturdaśī runs from 17:57 on Sat 5 May to 16:12 on Sun 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6334, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 }, "end": { "local": "2001-05-07T14:52:32+01:00", "utc": "2001-05-07T13:52:32Z", "ms": 989243552010.9359 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 }, "end": { "local": "2001-05-07T14:52:32+01:00", "utc": "2001-05-07T13:52:32Z", "ms": 989243552010.9359 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-06", "window": { "start": { "local": "2001-05-06T12:19:02+01:00", "utc": "2001-05-06T11:19:02Z", "ms": 989147941995.0947 }, "end": { "local": "2001-05-06T13:07:02+01:00", "utc": "2001-05-06T12:07:02Z", "ms": 989150821995.0947 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-07", "window": { "start": { "local": "2001-05-07T12:18:58+01:00", "utc": "2001-05-07T11:18:58Z", "ms": 989234337813.794 }, "end": { "local": "2001-05-07T13:06:58+01:00", "utc": "2001-05-07T12:06:58Z", "ms": 989237217813.794 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:12 on Sun 6 May to 14:53 on Mon 7 May.", "fact": "2001-05-06T15:12:10Z → 2001-05-07T13:52:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 6th, 12:19–13:07 on the 7th.", "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 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: unstated → only-day · margin 6334 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Lagos, 2001: Monday 7 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": "2001-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-07", "confidence": "determinate" } ], "quote": "In Lagos, Buddha Pūrṇimā 2001 falls on Monday 7 May. Pūrṇimā runs from 16:12 on Sun 6 May to 14:53 on Mon 7 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6334, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 }, "end": { "local": "2001-05-07T14:52:32+01:00", "utc": "2001-05-07T13:52:32Z", "ms": 989243552010.9359 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-06T16:12:10+01:00", "utc": "2001-05-06T15:12:10Z", "ms": 989161929655.6442 }, "end": { "local": "2001-05-07T14:52:32+01:00", "utc": "2001-05-07T13:52:32Z", "ms": 989243552010.9359 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-06", "window": { "start": { "local": "2001-05-06T12:19:02+01:00", "utc": "2001-05-06T11:19:02Z", "ms": 989147941995.0947 }, "end": { "local": "2001-05-06T13:07:02+01:00", "utc": "2001-05-06T12:07:02Z", "ms": 989150821995.0947 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-07", "window": { "start": { "local": "2001-05-07T12:18:58+01:00", "utc": "2001-05-07T11:18:58Z", "ms": 989234337813.794 }, "end": { "local": "2001-05-07T13:06:58+01:00", "utc": "2001-05-07T12:06:58Z", "ms": 989237217813.794 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:12 on Sun 6 May to 14:53 on Mon 7 May.", "fact": "2001-05-06T15:12:10Z → 2001-05-07T13:52:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 6th, 12:19–13:07 on the 7th.", "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 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6334 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Lagos, 2001: Monday 7 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": "2001-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-07", "confidence": "determinate" } ], "quote": "In Lagos, Sampat Gaurī Vrata 2001 falls on Monday 7 May. Pūrṇimā runs from 16:12 on Sun 6 May to 14:53 on Mon 7 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-05-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25375, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-05-10T14:22:55+01:00", "utc": "2001-05-10T13:22:55Z", "ms": 989500975405.5475 }, "end": { "local": "2001-05-11T15:32:17+01:00", "utc": "2001-05-11T14:32:17Z", "ms": 989591536691.7504 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-10T14:22:55+01:00", "utc": "2001-05-10T13:22:55Z", "ms": 989500975405.5475 }, "end": { "local": "2001-05-11T15:32:17+01:00", "utc": "2001-05-11T14:32:17Z", "ms": 989591536691.7504 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-05-10", "window": { "start": { "local": "2001-05-10T21:43:16+01:00", "utc": "2001-05-10T20:43:16Z", "ms": 989527396202.4177 }, "end": { "local": "2001-05-10T21:43:16+01:00", "utc": "2001-05-10T20:43:16Z", "ms": 989527396202.4177 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-05-11", "window": { "start": { "local": "2001-05-11T22:35:11+01:00", "utc": "2001-05-11T21:35:11Z", "ms": 989616911215.7977 }, "end": { "local": "2001-05-11T22:35:11+01:00", "utc": "2001-05-11T21:35:11Z", "ms": 989616911215.7977 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:23 on Thu 10 May to 15:32 on Fri 11 May.", "fact": "2001-05-10T13:22:55Z → 2001-05-11T14:32:17Z" }, { "step": "kaala", "text": "Moonrise is at 21:43 on the 10th and 22:35 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25375 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Thursday 10 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": "2001-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-10", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Thursday 10 May. Caturthī runs from 14:23 on Thu 10 May to 15:32 on Fri 11 May and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-05-18", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3641, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-05-18T04:19:55+01:00", "utc": "2001-05-18T03:19:55Z", "ms": 990155995150.5182 }, "end": { "local": "2001-05-19T05:29:29+01:00", "utc": "2001-05-19T04:29:29Z", "ms": 990246568587.439 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-18T04:19:55+01:00", "utc": "2001-05-18T03:19:55Z", "ms": 990155995150.5182 }, "end": { "local": "2001-05-19T05:29:29+01:00", "utc": "2001-05-19T04:29:29Z", "ms": 990246568587.439 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-05-18", "window": { "start": { "local": "2001-05-18T06:30:14+01:00", "utc": "2001-05-18T05:30:14Z", "ms": 990163814178.5709 }, "end": { "local": "2001-05-18T06:30:14+01:00", "utc": "2001-05-18T05:30:14Z", "ms": 990163814178.5709 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-05-19", "window": { "start": { "local": "2001-05-19T06:30:10+01:00", "utc": "2001-05-19T05:30:10Z", "ms": 990250209920.4883 }, "end": { "local": "2001-05-19T06:30:10+01:00", "utc": "2001-05-19T05:30:10Z", "ms": 990250209920.4883 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:20 on Fri 18 May to 05:29 on Sat 19 May.", "fact": "2001-05-18T03:19:55Z → 2001-05-19T04:29:29Z" }, { "step": "kaala", "text": "Sunrise is at 06:30 on the 18th and 06:30 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3641 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Lagos, 2001: Friday 18 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": "2001-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-18", "confidence": "determinate" } ], "quote": "In Lagos, Aparā Ekādaśī 2001 falls on Friday 18 May. Ekādaśī runs from 04:20 on Fri 18 May to 05:29 on Sat 19 May and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-05-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33697, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-05-20T05:59:31+01:00", "utc": "2001-05-20T04:59:31Z", "ms": 990334771202.8896 }, "end": { "local": "2001-05-21T05:49:57+01:00", "utc": "2001-05-21T04:49:57Z", "ms": 990420597299.5602 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-20T05:59:31+01:00", "utc": "2001-05-20T04:59:31Z", "ms": 990334771202.8896 }, "end": { "local": "2001-05-21T05:49:57+01:00", "utc": "2001-05-21T04:49:57Z", "ms": 990420597299.5602 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-05-19", "window": { "start": { "local": "2001-05-19T18:55:36+01:00", "utc": "2001-05-19T17:55:36Z", "ms": 990294935656.6289 }, "end": { "local": "2001-05-19T20:28:12+01:00", "utc": "2001-05-19T19:28:12Z", "ms": 990300491753.3191 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "2001-05-20", "window": { "start": { "local": "2001-05-20T18:55:46+01:00", "utc": "2001-05-20T17:55:46Z", "ms": 990381345839.1715 }, "end": { "local": "2001-05-20T20:28:20+01:00", "utc": "2001-05-20T19:28:20Z", "ms": 990386900201.5585 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:00 on Sun 20 May to 05:50 on Mon 21 May.", "fact": "2001-05-20T04:59:31Z → 2001-05-21T04:49:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:56–20:28 on the 19th, 18:56–20:28 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 93 minutes on the 19th and 93 of 93 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33697 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Sunday 20 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": "2001-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-20", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Sunday 20 May. Trayodaśī runs from 06:00 on Sun 20 May to 05:50 on Mon 21 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-05-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-05-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14208, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-05-21T05:49:57+01:00", "utc": "2001-05-21T04:49:57Z", "ms": 990420597299.5602 }, "end": { "local": "2001-05-22T05:03:47+01:00", "utc": "2001-05-22T04:03:47Z", "ms": 990504226812.647 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-21T05:49:57+01:00", "utc": "2001-05-21T04:49:57Z", "ms": 990420597299.5602 }, "end": { "local": "2001-05-22T05:03:47+01:00", "utc": "2001-05-22T04:03:47Z", "ms": 990504226812.647 } }, "kaala": "nishita", "days": [ { "local_date": "2001-05-20", "window": { "start": { "local": "2001-05-21T00:18:55+01:00", "utc": "2001-05-20T23:18:55Z", "ms": 990400734698.1227 }, "end": { "local": "2001-05-21T01:06:55+01:00", "utc": "2001-05-21T00:06:55Z", "ms": 990403614698.1227 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-21", "window": { "start": { "local": "2001-05-22T00:18:59+01:00", "utc": "2001-05-21T23:18:59Z", "ms": 990487138922.3689 }, "end": { "local": "2001-05-22T01:06:59+01:00", "utc": "2001-05-22T00:06:59Z", "ms": 990490018922.3689 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:50 on Mon 21 May to 05:04 on Tue 22 May.", "fact": "2001-05-21T04:49:57Z → 2001-05-22T04:03:47Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:19–01:07 on the 20th, 00:19–01:07 on the 21st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14208 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Monday 21 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": "2001-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-21", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Monday 21 May. Caturdaśī runs from 05:50 on Mon 21 May to 05:04 on Tue 22 May and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-05-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31078, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-05-25T00:00:31+01:00", "utc": "2001-05-24T23:00:31Z", "ms": 990745230982.8105 }, "end": { "local": "2001-05-25T21:45:19+01:00", "utc": "2001-05-25T20:45:19Z", "ms": 990823518545.0872 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-25T00:00:31+01:00", "utc": "2001-05-24T23:00:31Z", "ms": 990745230982.8105 }, "end": { "local": "2001-05-25T21:45:19+01:00", "utc": "2001-05-25T20:45:19Z", "ms": 990823518545.0872 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-24", "window": { "start": { "local": "2001-05-24T12:19:15+01:00", "utc": "2001-05-24T11:19:15Z", "ms": 990703154767.0665 }, "end": { "local": "2001-05-24T13:07:15+01:00", "utc": "2001-05-24T12:07:15Z", "ms": 990706034767.0665 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-25", "window": { "start": { "local": "2001-05-25T12:19:21+01:00", "utc": "2001-05-25T11:19:21Z", "ms": 990789560706.1852 }, "end": { "local": "2001-05-25T13:07:21+01:00", "utc": "2001-05-25T12:07:21Z", "ms": 990792440706.1852 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:01 on Fri 25 May to 21:45 on Fri 25 May.", "fact": "2001-05-24T23:00:31Z → 2001-05-25T20:45:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 24th, 12:19–13:07 on the 25th.", "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 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31078 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Lagos, 2001: Friday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-25", "confidence": "determinate" } ], "quote": "In Lagos, Rambhā Tṛtīyā 2001 falls on Friday 25 May. Tṛtīyā runs from 00:01 on Fri 25 May to 21:45 on Fri 25 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-05-26", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22518, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-05-25T21:45:19+01:00", "utc": "2001-05-25T20:45:19Z", "ms": 990823518545.0872 }, "end": { "local": "2001-05-26T19:22:46+01:00", "utc": "2001-05-26T18:22:46Z", "ms": 990901365550.4136 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-25T21:45:19+01:00", "utc": "2001-05-25T20:45:19Z", "ms": 990823518545.0872 }, "end": { "local": "2001-05-26T19:22:46+01:00", "utc": "2001-05-26T18:22:46Z", "ms": 990901365550.4136 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-25", "window": { "start": { "local": "2001-05-25T12:19:21+01:00", "utc": "2001-05-25T11:19:21Z", "ms": 990789560706.1852 }, "end": { "local": "2001-05-25T13:07:21+01:00", "utc": "2001-05-25T12:07:21Z", "ms": 990792440706.1852 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-26", "window": { "start": { "local": "2001-05-26T12:19:27+01:00", "utc": "2001-05-26T11:19:27Z", "ms": 990875967124.458 }, "end": { "local": "2001-05-26T13:07:27+01:00", "utc": "2001-05-26T12:07:27Z", "ms": 990878847124.458 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:45 on Fri 25 May to 19:23 on Sat 26 May.", "fact": "2001-05-25T20:45:19Z → 2001-05-26T18:22:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 25th, 12:19–13:07 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22518 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Saturday 26 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": "2001-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-26", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Saturday 26 May. Caturthī runs from 21:45 on Fri 25 May to 19:23 on Sat 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5189, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-05-27T16:57:42+01:00", "utc": "2001-05-27T15:57:42Z", "ms": 990979061517.4232 }, "end": { "local": "2001-05-28T14:34:10+01:00", "utc": "2001-05-28T13:34:10Z", "ms": 991056850374.2487 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-27T16:57:42+01:00", "utc": "2001-05-27T15:57:42Z", "ms": 990979061517.4232 }, "end": { "local": "2001-05-28T14:34:10+01:00", "utc": "2001-05-28T13:34:10Z", "ms": 991056850374.2487 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-27", "window": { "start": { "local": "2001-05-27T12:19:34+01:00", "utc": "2001-05-27T11:19:34Z", "ms": 990962374005.5922 }, "end": { "local": "2001-05-27T13:07:34+01:00", "utc": "2001-05-27T12:07:34Z", "ms": 990965254005.5922 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-28", "window": { "start": { "local": "2001-05-28T12:19:41+01:00", "utc": "2001-05-28T11:19:41Z", "ms": 991048781333.4911 }, "end": { "local": "2001-05-28T13:07:41+01:00", "utc": "2001-05-28T12:07:41Z", "ms": 991051661333.4911 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:58 on Sun 27 May to 14:34 on Mon 28 May.", "fact": "2001-05-27T15:57:42Z → 2001-05-28T13:34:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 27th, 12:20–13:08 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5189 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Lagos, 2001: Monday 28 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-28", "confidence": "determinate" } ], "quote": "In Lagos, Araṇya Gaurī Vrata 2001 falls on Monday 28 May. Ṣaṣṭhī runs from 16:58 on Sun 27 May to 14:34 on Mon 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5189, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-05-27T16:57:42+01:00", "utc": "2001-05-27T15:57:42Z", "ms": 990979061517.4232 }, "end": { "local": "2001-05-28T14:34:10+01:00", "utc": "2001-05-28T13:34:10Z", "ms": 991056850374.2487 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-05-27T16:57:42+01:00", "utc": "2001-05-27T15:57:42Z", "ms": 990979061517.4232 }, "end": { "local": "2001-05-28T14:34:10+01:00", "utc": "2001-05-28T13:34:10Z", "ms": 991056850374.2487 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-05-27", "window": { "start": { "local": "2001-05-27T12:19:34+01:00", "utc": "2001-05-27T11:19:34Z", "ms": 990962374005.5922 }, "end": { "local": "2001-05-27T13:07:34+01:00", "utc": "2001-05-27T12:07:34Z", "ms": 990965254005.5922 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-05-28", "window": { "start": { "local": "2001-05-28T12:19:41+01:00", "utc": "2001-05-28T11:19:41Z", "ms": 991048781333.4911 }, "end": { "local": "2001-05-28T13:07:41+01:00", "utc": "2001-05-28T12:07:41Z", "ms": 991051661333.4911 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:58 on Sun 27 May to 14:34 on Mon 28 May.", "fact": "2001-05-27T15:57:42Z → 2001-05-28T13:34:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 27th, 12:20–13:08 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5189 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Lagos, 2001: Monday 28 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-05-28", "confidence": "determinate" } ], "quote": "In Lagos, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2001 falls on Monday 28 May. Ṣaṣṭhī runs from 16:58 on Sun 27 May to 14:34 on Mon 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-06-01", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 705, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-06-01T06:18:31+01:00", "utc": "2001-06-01T05:18:31Z", "ms": 991372711251.4613 }, "end": { "local": "2001-06-02T04:48:27+01:00", "utc": "2001-06-02T03:48:27Z", "ms": 991453707343.9657 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-01T06:18:31+01:00", "utc": "2001-06-01T05:18:31Z", "ms": 991372711251.4613 }, "end": { "local": "2001-06-02T04:48:27+01:00", "utc": "2001-06-02T03:48:27Z", "ms": 991453707343.9657 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-06-01", "window": { "start": { "local": "2001-06-01T06:30:17+01:00", "utc": "2001-06-01T05:30:17Z", "ms": 991373416750.5873 }, "end": { "local": "2001-06-01T06:30:17+01:00", "utc": "2001-06-01T05:30:17Z", "ms": 991373416750.5873 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-06-02", "window": { "start": { "local": "2001-06-02T06:30:22+01:00", "utc": "2001-06-02T05:30:22Z", "ms": 991459821668.1836 }, "end": { "local": "2001-06-02T06:30:22+01:00", "utc": "2001-06-02T05:30:22Z", "ms": 991459821668.1836 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:19 on Fri 1 Jun to 04:48 on Sat 2 Jun.", "fact": "2001-06-01T05:18:31Z → 2001-06-02T03:48:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:30 on the 1st and 06:30 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 705 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Lagos, 2001: Friday 1 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": "2001-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-01", "confidence": "determinate" } ], "quote": "In Lagos, Nirjalā Ekādaśī 2001 falls on Friday 1 June. Ekādaśī runs from 06:19 on Fri 1 Jun to 04:48 on Sat 2 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27117, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-06-02T04:48:27+01:00", "utc": "2001-06-02T03:48:27Z", "ms": 991453707343.9657 }, "end": { "local": "2001-06-03T03:38:06+01:00", "utc": "2001-06-03T02:38:06Z", "ms": 991535885607.1538 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-02T04:48:27+01:00", "utc": "2001-06-02T03:48:27Z", "ms": 991453707343.9657 }, "end": { "local": "2001-06-03T03:38:06+01:00", "utc": "2001-06-03T02:38:06Z", "ms": 991535885607.1538 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-06-02", "window": { "start": { "local": "2001-06-02T12:20:24+01:00", "utc": "2001-06-02T11:20:24Z", "ms": 991480824146.8838 }, "end": { "local": "2001-06-02T13:08:24+01:00", "utc": "2001-06-02T12:08:24Z", "ms": 991483704146.8838 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-06-03", "window": { "start": { "local": "2001-06-03T12:20:34+01:00", "utc": "2001-06-03T11:20:34Z", "ms": 991567233845.2388 }, "end": { "local": "2001-06-03T13:08:34+01:00", "utc": "2001-06-03T12:08:34Z", "ms": 991570113845.2388 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 04:48 on Sat 2 Jun to 03:38 on Sun 3 Jun.", "fact": "2001-06-02T03:48:27Z → 2001-06-03T02:38:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 2nd, 12:21–13:09 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27117 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Lagos, 2001: Saturday 2 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": "2001-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-02", "confidence": "determinate" } ], "quote": "In Lagos, Śrī Rāma Dvādaśī 2001 falls on Saturday 2 June. Dvādaśī runs from 04:48 on Sat 2 Jun to 03:38 on Sun 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-06-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22799, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-06-03T03:38:06+01:00", "utc": "2001-06-03T02:38:06Z", "ms": 991535885607.1538 }, "end": { "local": "2001-06-04T02:50:54+01:00", "utc": "2001-06-04T01:50:54Z", "ms": 991619454207.53 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-03T03:38:06+01:00", "utc": "2001-06-03T02:38:06Z", "ms": 991535885607.1538 }, "end": { "local": "2001-06-04T02:50:54+01:00", "utc": "2001-06-04T01:50:54Z", "ms": 991619454207.53 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-06-02", "window": { "start": { "local": "2001-06-02T18:58:27+01:00", "utc": "2001-06-02T17:58:27Z", "ms": 991504706625.5841 }, "end": { "local": "2001-06-02T20:30:43+01:00", "utc": "2001-06-02T19:30:43Z", "ms": 991510242696.3396 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "2001-06-03", "window": { "start": { "local": "2001-06-03T18:58:41+01:00", "utc": "2001-06-03T17:58:41Z", "ms": 991591120534.2268 }, "end": { "local": "2001-06-03T20:30:56+01:00", "utc": "2001-06-03T19:30:56Z", "ms": 991596655556.8052 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:38 on Sun 3 Jun to 02:51 on Mon 4 Jun.", "fact": "2001-06-03T02:38:06Z → 2001-06-04T01:50:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:31 on the 2nd, 18:59–20:31 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 92 minutes on the 2nd and 92 of 92 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 22799 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Sunday 3 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": "2001-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-03", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Sunday 3 June. Trayodaśī runs from 03:38 on Sun 3 Jun to 02:51 on Mon 4 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21551, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-06-05T02:30:19+01:00", "utc": "2001-06-05T01:30:19Z", "ms": 991704619366.2747 }, "end": { "local": "2001-06-06T02:39:21+01:00", "utc": "2001-06-06T01:39:21Z", "ms": 991791560508.3997 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-05T02:30:19+01:00", "utc": "2001-06-05T01:30:19Z", "ms": 991704619366.2747 }, "end": { "local": "2001-06-06T02:39:21+01:00", "utc": "2001-06-06T01:39:21Z", "ms": 991791560508.3997 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-06-04", "window": { "start": { "local": "2001-06-04T18:58:55+01:00", "utc": "2001-06-04T17:58:55Z", "ms": 991677534576.7866 }, "end": { "local": "2001-06-04T20:31:09+01:00", "utc": "2001-06-04T19:31:09Z", "ms": 991683068606.3422 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "2001-06-05", "window": { "start": { "local": "2001-06-05T18:59:09+01:00", "utc": "2001-06-05T17:59:09Z", "ms": 991763948736.5123 }, "end": { "local": "2001-06-05T20:31:22+01:00", "utc": "2001-06-05T19:31:22Z", "ms": 991769481828.7935 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:30 on Tue 5 Jun to 02:39 on Wed 6 Jun.", "fact": "2001-06-05T01:30:19Z → 2001-06-06T01:39:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:59–20:31 on the 4th, 18:59–20:31 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 92 minutes on the 4th and 92 of 92 on the 5th.", "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 21551 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Lagos, 2001: Tuesday 5 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": "2001-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-05", "confidence": "determinate" } ], "quote": "In Lagos, Vaṭa Sāvitrī Vrata 2001 falls on Tuesday 5 June. Pūrṇimā runs from 02:30 on Tue 5 Jun to 02:39 on Wed 6 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-06-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32221, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-06-09T06:14:13+01:00", "utc": "2001-06-09T05:14:13Z", "ms": 992063653250.7728 }, "end": { "local": "2001-06-10T08:20:25+01:00", "utc": "2001-06-10T07:20:25Z", "ms": 992157624668.4855 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-09T06:14:13+01:00", "utc": "2001-06-09T05:14:13Z", "ms": 992063653250.7728 }, "end": { "local": "2001-06-10T08:20:25+01:00", "utc": "2001-06-10T07:20:25Z", "ms": 992157624668.4855 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-06-08", "window": { "start": { "local": "2001-06-08T21:17:12+01:00", "utc": "2001-06-08T20:17:12Z", "ms": 992031432390.1818 }, "end": { "local": "2001-06-08T21:17:12+01:00", "utc": "2001-06-08T20:17:12Z", "ms": 992031432390.1818 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-06-09", "window": { "start": { "local": "2001-06-09T22:06:15+01:00", "utc": "2001-06-09T21:06:15Z", "ms": 992120774517.3352 }, "end": { "local": "2001-06-09T22:06:15+01:00", "utc": "2001-06-09T21:06:15Z", "ms": 992120774517.3352 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:14 on Sat 9 Jun to 08:20 on Sun 10 Jun.", "fact": "2001-06-09T05:14:13Z → 2001-06-10T07:20:25Z" }, { "step": "kaala", "text": "Moonrise is at 21:17 on the 8th and 22:06 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32221 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Saturday 9 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": "2001-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-09", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Saturday 9 June. Caturthī runs from 06:14 on Sat 9 Jun to 08:20 on Sun 10 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-06-17", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39635, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-06-16T19:31:43+01:00", "utc": "2001-06-16T18:31:43Z", "ms": 992716303167.5436 }, "end": { "local": "2001-06-17T19:32:13+01:00", "utc": "2001-06-17T18:32:13Z", "ms": 992802733420.867 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-16T19:31:43+01:00", "utc": "2001-06-16T18:31:43Z", "ms": 992716303167.5436 }, "end": { "local": "2001-06-17T19:32:13+01:00", "utc": "2001-06-17T18:32:13Z", "ms": 992802733420.867 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-06-17", "window": { "start": { "local": "2001-06-17T06:32:36+01:00", "utc": "2001-06-17T05:32:36Z", "ms": 992755956278.053 }, "end": { "local": "2001-06-17T06:32:36+01:00", "utc": "2001-06-17T05:32:36Z", "ms": 992755956278.053 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-06-18", "window": { "start": { "local": "2001-06-18T06:32:49+01:00", "utc": "2001-06-18T05:32:49Z", "ms": 992842368540.1077 }, "end": { "local": "2001-06-18T06:32:49+01:00", "utc": "2001-06-18T05:32:49Z", "ms": 992842368540.1077 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:32 on Sat 16 Jun to 19:32 on Sun 17 Jun.", "fact": "2001-06-16T18:31:43Z → 2001-06-17T18:32:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 17th and 06:33 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39635 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Lagos, 2001: Sunday 17 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": "2001-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-17", "confidence": "determinate" } ], "quote": "In Lagos, Yoginī Ekādaśī 2001 falls on Sunday 17 June. Ekādaśī runs from 19:32 on Sat 16 Jun to 19:32 on Sun 17 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-06-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 801, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-06-18T18:48:53+01:00", "utc": "2001-06-18T17:48:53Z", "ms": 992886533175.9109 }, "end": { "local": "2001-06-19T17:24:49+01:00", "utc": "2001-06-19T16:24:49Z", "ms": 992967889101.1055 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-18T18:48:53+01:00", "utc": "2001-06-18T17:48:53Z", "ms": 992886533175.9109 }, "end": { "local": "2001-06-19T17:24:49+01:00", "utc": "2001-06-19T16:24:49Z", "ms": 992967889101.1055 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-06-18", "window": { "start": { "local": "2001-06-18T19:02:15+01:00", "utc": "2001-06-18T18:02:15Z", "ms": 992887334633.541 }, "end": { "local": "2001-06-18T20:34:21+01:00", "utc": "2001-06-18T19:34:21Z", "ms": 992892860827.9849 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "2001-06-19", "window": { "start": { "local": "2001-06-19T19:02:28+01:00", "utc": "2001-06-19T18:02:28Z", "ms": 992973748292.6632 }, "end": { "local": "2001-06-19T20:34:34+01:00", "utc": "2001-06-19T19:34:34Z", "ms": 992979274374.5345 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:49 on Mon 18 Jun to 17:25 on Tue 19 Jun.", "fact": "2001-06-18T17:48:53Z → 2001-06-19T16:24:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:02–20:34 on the 18th, 19:02–20:35 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 92 of 92 minutes on the 18th and 0 of 92 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 801 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Monday 18 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": "2001-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-18", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Monday 18 June. Trayodaśī runs from 18:49 on Mon 18 Jun to 17:25 on Tue 19 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-06-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25142, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-06-19T17:24:49+01:00", "utc": "2001-06-19T16:24:49Z", "ms": 992967889101.1055 }, "end": { "local": "2001-06-20T15:25:27+01:00", "utc": "2001-06-20T14:25:27Z", "ms": 993047127481.7286 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-19T17:24:49+01:00", "utc": "2001-06-19T16:24:49Z", "ms": 992967889101.1055 }, "end": { "local": "2001-06-20T15:25:27+01:00", "utc": "2001-06-20T14:25:27Z", "ms": 993047127481.7286 } }, "kaala": "nishita", "days": [ { "local_date": "2001-06-19", "window": { "start": { "local": "2001-06-20T00:23:51+01:00", "utc": "2001-06-19T23:23:51Z", "ms": 992993031099.6805 }, "end": { "local": "2001-06-20T01:11:51+01:00", "utc": "2001-06-20T00:11:51Z", "ms": 992995911099.6805 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-06-20", "window": { "start": { "local": "2001-06-21T00:24:04+01:00", "utc": "2001-06-20T23:24:04Z", "ms": 993079444345.1476 }, "end": { "local": "2001-06-21T01:12:04+01:00", "utc": "2001-06-21T00:12:04Z", "ms": 993082324345.1476 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:25 on Tue 19 Jun to 15:25 on Wed 20 Jun.", "fact": "2001-06-19T16:24:49Z → 2001-06-20T14:25:27Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:24–01:12 on the 19th, 00:24–01:12 on the 20th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25142 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Tuesday 19 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": "2001-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-19", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Tuesday 19 June. Caturdaśī runs from 17:25 on Tue 19 Jun to 15:25 on Wed 20 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-06-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8095, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2001-06-22T10:09:29+01:00", "utc": "2001-06-22T09:09:29Z", "ms": 993200968772.4463 }, "end": { "local": "2001-06-23T07:08:42+01:00", "utc": "2001-06-23T06:08:42Z", "ms": 993276522372.7673 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-22T10:09:29+01:00", "utc": "2001-06-22T09:09:29Z", "ms": 993200968772.4463 }, "end": { "local": "2001-06-23T07:08:42+01:00", "utc": "2001-06-23T06:08:42Z", "ms": 993276522372.7673 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-06-22", "window": { "start": { "local": "2001-06-22T12:24:24+01:00", "utc": "2001-06-22T11:24:24Z", "ms": 993209064029.0244 }, "end": { "local": "2001-06-22T13:12:24+01:00", "utc": "2001-06-22T12:12:24Z", "ms": 993211944029.0244 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-06-23", "window": { "start": { "local": "2001-06-23T12:24:37+01:00", "utc": "2001-06-23T11:24:37Z", "ms": 993295477050.9968 }, "end": { "local": "2001-06-23T13:12:37+01:00", "utc": "2001-06-23T12:12:37Z", "ms": 993298357050.9968 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:09 on Fri 22 Jun to 07:09 on Sat 23 Jun.", "fact": "2001-06-22T09:09:29Z → 2001-06-23T06:08:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 22nd, 12:25–13:13 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8095 s" }, { "step": "ruling", "text": "Rathayātrā, Lagos, 2001: Friday 22 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-22", "confidence": "determinate" } ], "quote": "In Lagos, Rathayātrā 2001 falls on Friday 22 June. Dvitīyā runs from 10:09 on Fri 22 Jun to 07:09 on Sat 23 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-06-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30085, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-06-24T04:03:25+01:00", "utc": "2001-06-24T03:03:25Z", "ms": 993351804593.8378 }, "end": { "local": "2001-06-25T01:01:10+01:00", "utc": "2001-06-25T00:01:10Z", "ms": 993427270287.7369 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-24T04:03:25+01:00", "utc": "2001-06-24T03:03:25Z", "ms": 993351804593.8378 }, "end": { "local": "2001-06-25T01:01:10+01:00", "utc": "2001-06-25T00:01:10Z", "ms": 993427270287.7369 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-06-24", "window": { "start": { "local": "2001-06-24T12:24:50+01:00", "utc": "2001-06-24T11:24:50Z", "ms": 993381889978.7822 }, "end": { "local": "2001-06-24T13:12:50+01:00", "utc": "2001-06-24T12:12:50Z", "ms": 993384769978.7822 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-06-25", "window": { "start": { "local": "2001-06-25T12:25:03+01:00", "utc": "2001-06-25T11:25:03Z", "ms": 993468302783.983 }, "end": { "local": "2001-06-25T13:13:03+01:00", "utc": "2001-06-25T12:13:03Z", "ms": 993471182783.983 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:03 on Sun 24 Jun to 01:01 on Mon 25 Jun.", "fact": "2001-06-24T03:03:25Z → 2001-06-25T00:01:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 24th, 12:25–13:13 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30085 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Sunday 24 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": "2001-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-24", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Sunday 24 June. Caturthī runs from 04:03 on Sun 24 Jun to 01:01 on Mon 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32153, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-06-25T01:01:10+01:00", "utc": "2001-06-25T00:01:10Z", "ms": 993427270287.7369 }, "end": { "local": "2001-06-25T22:08:56+01:00", "utc": "2001-06-25T21:08:56Z", "ms": 993503335969.7021 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-25T01:01:10+01:00", "utc": "2001-06-25T00:01:10Z", "ms": 993427270287.7369 }, "end": { "local": "2001-06-25T22:08:56+01:00", "utc": "2001-06-25T21:08:56Z", "ms": 993503335969.7021 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-06-24", "window": { "start": { "local": "2001-06-24T12:24:50+01:00", "utc": "2001-06-24T11:24:50Z", "ms": 993381889978.7822 }, "end": { "local": "2001-06-24T13:12:50+01:00", "utc": "2001-06-24T12:12:50Z", "ms": 993384769978.7822 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-06-25", "window": { "start": { "local": "2001-06-25T12:25:03+01:00", "utc": "2001-06-25T11:25:03Z", "ms": 993468302783.983 }, "end": { "local": "2001-06-25T13:13:03+01:00", "utc": "2001-06-25T12:13:03Z", "ms": 993471182783.983 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:01 on Mon 25 Jun to 22:09 on Mon 25 Jun.", "fact": "2001-06-25T00:01:10Z → 2001-06-25T21:08:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 24th, 12:25–13:13 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32153 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Lagos, 2001: Monday 25 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-25", "confidence": "determinate" } ], "quote": "In Lagos, Skanda Pañcamī 2001 falls on Monday 25 June. Pañcamī runs from 01:01 on Mon 25 Jun to 22:09 on Mon 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14660, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-06-26T19:32:47+01:00", "utc": "2001-06-26T18:32:47Z", "ms": 993580367271.6885 }, "end": { "local": "2001-06-27T17:17:48+01:00", "utc": "2001-06-27T16:17:48Z", "ms": 993658668402.2267 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-26T19:32:47+01:00", "utc": "2001-06-26T18:32:47Z", "ms": 993580367271.6885 }, "end": { "local": "2001-06-27T17:17:48+01:00", "utc": "2001-06-27T16:17:48Z", "ms": 993658668402.2267 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-06-26", "window": { "start": { "local": "2001-06-26T12:25:15+01:00", "utc": "2001-06-26T11:25:15Z", "ms": 993554715439.6445 }, "end": { "local": "2001-06-26T13:13:15+01:00", "utc": "2001-06-26T12:13:15Z", "ms": 993557595439.6445 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-06-27", "window": { "start": { "local": "2001-06-27T12:25:28+01:00", "utc": "2001-06-27T11:25:28Z", "ms": 993641127920.4995 }, "end": { "local": "2001-06-27T13:13:28+01:00", "utc": "2001-06-27T12:13:28Z", "ms": 993644007920.4995 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:33 on Tue 26 Jun to 17:18 on Wed 27 Jun.", "fact": "2001-06-26T18:32:47Z → 2001-06-27T16:17:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 26th, 12:25–13:13 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14660 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Lagos, 2001: Wednesday 27 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-06-27", "confidence": "determinate" } ], "quote": "In Lagos, Vivasvat Saptamī 2001 falls on Wednesday 27 June. Saptamī runs from 19:33 on Tue 26 Jun to 17:18 on Wed 27 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-07-01", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22474, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-06-30T13:13:06+01:00", "utc": "2001-06-30T12:13:06Z", "ms": 993903186087.9103 }, "end": { "local": "2001-07-01T12:50:18+01:00", "utc": "2001-07-01T11:50:18Z", "ms": 993988218377.874 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-06-30T13:13:06+01:00", "utc": "2001-06-30T12:13:06Z", "ms": 993903186087.9103 }, "end": { "local": "2001-07-01T12:50:18+01:00", "utc": "2001-07-01T11:50:18Z", "ms": 993988218377.874 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-06-30", "window": { "start": { "local": "2001-06-30T06:35:30+01:00", "utc": "2001-06-30T05:35:30Z", "ms": 993879330226.1415 }, "end": { "local": "2001-06-30T06:35:30+01:00", "utc": "2001-06-30T05:35:30Z", "ms": 993879330226.1415 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-07-01", "window": { "start": { "local": "2001-07-01T06:35:44+01:00", "utc": "2001-07-01T05:35:44Z", "ms": 993965744086.7621 }, "end": { "local": "2001-07-01T06:35:44+01:00", "utc": "2001-07-01T05:35:44Z", "ms": 993965744086.7621 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:13 on Sat 30 Jun to 12:50 on Sun 1 Jul.", "fact": "2001-06-30T12:13:06Z → 2001-07-01T11:50:18Z" }, { "step": "kaala", "text": "Sunrise is at 06:36 on the 30th and 06:36 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22474 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Lagos, 2001: Sunday 1 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": "2001-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-01", "confidence": "determinate" } ], "quote": "In Lagos, Hariśayanī Ekādaśī 2001 falls on Sunday 1 July. Ekādaśī runs from 13:13 on Sat 30 Jun to 12:50 on Sun 1 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-07-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-07-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19939, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-07-02T12:57:10+01:00", "utc": "2001-07-02T11:57:10Z", "ms": 994075029667.15 }, "end": { "local": "2001-07-03T13:32:45+01:00", "utc": "2001-07-03T12:32:45Z", "ms": 994163565337.0442 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-07-02T12:57:10+01:00", "utc": "2001-07-02T11:57:10Z", "ms": 994075029667.15 }, "end": { "local": "2001-07-03T13:32:45+01:00", "utc": "2001-07-03T12:32:45Z", "ms": 994163565337.0442 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-07-02", "window": { "start": { "local": "2001-07-02T19:04:56+01:00", "utc": "2001-07-02T18:04:56Z", "ms": 994097095959.471 }, "end": { "local": "2001-07-02T20:37:06+01:00", "utc": "2001-07-02T19:37:06Z", "ms": 994102626049.6923 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "2001-07-03", "window": { "start": { "local": "2001-07-03T19:05:04+01:00", "utc": "2001-07-03T18:05:04Z", "ms": 994183504189.5264 }, "end": { "local": "2001-07-03T20:37:15+01:00", "utc": "2001-07-03T19:37:15Z", "ms": 994189035002.3839 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:57 on Mon 2 Jul to 13:33 on Tue 3 Jul.", "fact": "2001-07-02T11:57:10Z → 2001-07-03T12:32:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:37 on the 2nd, 19:05–20:37 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 92 of 92 minutes on the 2nd and 0 of 92 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 19939 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Monday 2 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": "2001-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-02", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Monday 2 July. Trayodaśī runs from 12:57 on Mon 2 Jul to 13:33 on Tue 3 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1909, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 } }, "kaala": "sayahna", "days": [ { "local_date": "2001-07-04", "window": { "start": { "local": "2001-07-04T16:35:27+01:00", "utc": "2001-07-04T15:35:27Z", "ms": 994260926562.8118 }, "end": { "local": "2001-07-04T19:05:12+01:00", "utc": "2001-07-04T18:05:12Z", "ms": 994269911882.0254 } }, "covered_min": 150, "window_min": 150, "qualifies": true }, { "local_date": "2001-07-05", "window": { "start": { "local": "2001-07-05T16:35:35+01:00", "utc": "2001-07-05T15:35:35Z", "ms": 994347334983.8236 }, "end": { "local": "2001-07-05T19:05:19+01:00", "utc": "2001-07-05T18:05:19Z", "ms": 994356319022.9309 } }, "covered_min": 0, "window_min": 150, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul.", "fact": "2001-07-04T13:35:38Z → 2001-07-05T15:03:46Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:35–19:05 on the 4th, 16:36–19:05 on the 5th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 150 of 150 minutes on the 4th and 0 of 150 on the 5th.", "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 1909 s" }, { "step": "ruling", "text": "Kokilā Vrata, Lagos, 2001: Wednesday 4 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": "2001-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-04", "confidence": "determinate" } ], "quote": "In Lagos, Kokilā Vrata 2001 falls on Wednesday 4 July. Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10893, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-07-04", "window": { "start": { "local": "2001-07-04T19:05:12+01:00", "utc": "2001-07-04T18:05:12Z", "ms": 994269911882.0254 }, "end": { "local": "2001-07-04T20:37:23+01:00", "utc": "2001-07-04T19:37:23Z", "ms": 994275443474.7413 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "2001-07-05", "window": { "start": { "local": "2001-07-05T19:05:19+01:00", "utc": "2001-07-05T18:05:19Z", "ms": 994356319022.9309 }, "end": { "local": "2001-07-05T20:37:31+01:00", "utc": "2001-07-05T19:37:31Z", "ms": 994361851452.157 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul.", "fact": "2001-07-04T13:35:38Z → 2001-07-05T15:03:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:37 on the 4th, 19:05–20:38 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 92 of 92 minutes on the 4th and 0 of 92 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10893 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Lagos, 2001: Wednesday 4 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": "2001-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-04", "confidence": "determinate" } ], "quote": "In Lagos, Śiva Śayanotsava 2001 falls on Wednesday 4 July. Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19768, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 } }, "kaala": "udaya-3", "days": [ { "local_date": "2001-07-04", "window": { "start": { "local": "2001-07-04T06:36:25+01:00", "utc": "2001-07-04T05:36:25Z", "ms": 994224985285.9575 }, "end": { "local": "2001-07-04T09:06:11+01:00", "utc": "2001-07-04T08:06:11Z", "ms": 994233970605.1711 } }, "covered_min": 0, "window_min": 150, "qualifies": false }, { "local_date": "2001-07-05", "window": { "start": { "local": "2001-07-05T06:36:39+01:00", "utc": "2001-07-05T05:36:39Z", "ms": 994311398827.3945 }, "end": { "local": "2001-07-05T09:06:23+01:00", "utc": "2001-07-05T08:06:23Z", "ms": 994320382866.5018 } }, "covered_min": 150, "window_min": 150, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul.", "fact": "2001-07-04T13:35:38Z → 2001-07-05T15:03:46Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:36–09:06 on the 4th, 06:37–09:06 on the 5th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 150 minutes on the 4th and 150 of 150 on the 5th.", "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 19768 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Lagos, 2001: Thursday 5 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": "2001-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-05", "confidence": "determinate" } ], "quote": "In Lagos, Vyāsa Pūjā 2001 falls on Thursday 5 July. Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4850, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2001-07-04T14:35:38+01:00", "utc": "2001-07-04T13:35:38Z", "ms": 994253738417.0208 }, "end": { "local": "2001-07-05T16:03:46+01:00", "utc": "2001-07-05T15:03:46Z", "ms": 994345426418.7457 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-07-04", "window": { "start": { "local": "2001-07-04T12:26:49+01:00", "utc": "2001-07-04T11:26:49Z", "ms": 994246008583.9915 }, "end": { "local": "2001-07-04T13:14:49+01:00", "utc": "2001-07-04T12:14:49Z", "ms": 994248888583.9915 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-07-05", "window": { "start": { "local": "2001-07-05T12:26:59+01:00", "utc": "2001-07-05T11:26:59Z", "ms": 994332418925.1627 }, "end": { "local": "2001-07-05T13:14:59+01:00", "utc": "2001-07-05T12:14:59Z", "ms": 994335298925.1627 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul.", "fact": "2001-07-04T13:35:38Z → 2001-07-05T15:03:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 4th, 12:27–13:15 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4850 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Lagos, 2001: Thursday 5 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": "2001-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-05", "confidence": "determinate" } ], "quote": "In Lagos, Guru Pūrṇimā 2001 falls on Thursday 5 July. Pūrṇimā runs from 14:36 on Wed 4 Jul to 16:04 on Thu 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2687, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2001-07-06T17:54:18+01:00", "utc": "2001-07-06T16:54:18Z", "ms": 994438457658.0377 }, "end": { "local": "2001-07-07T20:03:09+01:00", "utc": "2001-07-07T19:03:09Z", "ms": 994532589246.5508 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-06T17:54:18+01:00", "utc": "2001-07-06T16:54:18Z", "ms": 994438457658.0377 }, "end": { "local": "2001-07-07T20:03:09+01:00", "utc": "2001-07-07T19:03:09Z", "ms": 994532589246.5508 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-07-06", "window": { "start": { "local": "2001-07-06T20:00:28+01:00", "utc": "2001-07-06T19:00:28Z", "ms": 994446028001.5868 }, "end": { "local": "2001-07-06T20:00:28+01:00", "utc": "2001-07-06T19:00:28Z", "ms": 994446028001.5868 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-07-07", "window": { "start": { "local": "2001-07-07T20:47:56+01:00", "utc": "2001-07-07T19:47:56Z", "ms": 994535275813.282 }, "end": { "local": "2001-07-07T20:47:56+01:00", "utc": "2001-07-07T19:47:56Z", "ms": 994535275813.282 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 17:54 on Fri 6 Jul to 20:03 on Sat 7 Jul.", "fact": "2001-07-06T16:54:18Z → 2001-07-07T19:03:09Z" }, { "step": "kaala", "text": "Moonrise is at 20:00 on the 6th and 20:48 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 6th and is not on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2687 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Lagos, 2001: Friday 6 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": "2001-07-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-06", "confidence": "determinate" } ], "quote": "In Lagos, Aśūnya Śayana Vrata (Āṣāḍha) 2001 falls on Friday 6 July. Dvitīyā runs from 17:54 on Fri 6 Jul to 20:03 on Sat 7 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-07-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3115, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-07-08T22:24:43+01:00", "utc": "2001-07-08T21:24:43Z", "ms": 994627483206.8318 }, "end": { "local": "2001-07-10T00:51:31+01:00", "utc": "2001-07-09T23:51:31Z", "ms": 994722691029.0874 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-08T22:24:43+01:00", "utc": "2001-07-08T21:24:43Z", "ms": 994627483206.8318 }, "end": { "local": "2001-07-10T00:51:31+01:00", "utc": "2001-07-09T23:51:31Z", "ms": 994722691029.0874 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-07-08", "window": { "start": { "local": "2001-07-08T21:32:49+01:00", "utc": "2001-07-08T20:32:49Z", "ms": 994624368601.7661 }, "end": { "local": "2001-07-08T21:32:49+01:00", "utc": "2001-07-08T20:32:49Z", "ms": 994624368601.7661 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-07-09", "window": { "start": { "local": "2001-07-09T22:15:18+01:00", "utc": "2001-07-09T21:15:18Z", "ms": 994713317697.2101 }, "end": { "local": "2001-07-09T22:15:18+01:00", "utc": "2001-07-09T21:15:18Z", "ms": 994713317697.2101 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:25 on Sun 8 Jul to 00:52 on Tue 10 Jul.", "fact": "2001-07-08T21:24:43Z → 2001-07-09T23:51:31Z" }, { "step": "kaala", "text": "Moonrise is at 21:33 on the 8th and 22:15 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3115 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Monday 9 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": "2001-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-09", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Monday 9 July. Caturthī runs from 22:25 on Sun 8 Jul to 00:52 on Tue 10 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-07-17", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2368, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-07-16T08:23:20+01:00", "utc": "2001-07-16T07:23:20Z", "ms": 995268199690.144 }, "end": { "local": "2001-07-17T07:18:34+01:00", "utc": "2001-07-17T06:18:34Z", "ms": 995350714133.3796 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-16T08:23:20+01:00", "utc": "2001-07-16T07:23:20Z", "ms": 995268199690.144 }, "end": { "local": "2001-07-17T07:18:34+01:00", "utc": "2001-07-17T06:18:34Z", "ms": 995350714133.3796 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-07-16", "window": { "start": { "local": "2001-07-16T06:38:56+01:00", "utc": "2001-07-16T05:38:56Z", "ms": 995261935584.8615 }, "end": { "local": "2001-07-16T06:38:56+01:00", "utc": "2001-07-16T05:38:56Z", "ms": 995261935584.8615 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-07-17", "window": { "start": { "local": "2001-07-17T06:39:06+01:00", "utc": "2001-07-17T05:39:06Z", "ms": 995348346467.8934 }, "end": { "local": "2001-07-17T06:39:06+01:00", "utc": "2001-07-17T05:39:06Z", "ms": 995348346467.8934 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:23 on Mon 16 Jul to 07:19 on Tue 17 Jul.", "fact": "2001-07-16T07:23:20Z → 2001-07-17T06:18:34Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 16th and 06:39 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 2368 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Lagos, 2001: Tuesday 17 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": "2001-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-17", "confidence": "determinate" } ], "quote": "In Lagos, Kāmikā Ekādaśī 2001 falls on Tuesday 17 July. Ekādaśī runs from 08:23 on Mon 16 Jul to 07:19 on Tue 17 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-07-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-07-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23096, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-07-18T05:30:10+01:00", "utc": "2001-07-18T04:30:10Z", "ms": 995430609971.4834 }, "end": { "local": "2001-07-19T03:03:20+01:00", "utc": "2001-07-19T02:03:20Z", "ms": 995508199773.6665 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-18T05:30:10+01:00", "utc": "2001-07-18T04:30:10Z", "ms": 995430609971.4834 }, "end": { "local": "2001-07-19T03:03:20+01:00", "utc": "2001-07-19T02:03:20Z", "ms": 995508199773.6665 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-07-17", "window": { "start": { "local": "2001-07-17T19:05:57+01:00", "utc": "2001-07-17T18:05:57Z", "ms": 995393157219.3834 }, "end": { "local": "2001-07-17T20:38:24+01:00", "utc": "2001-07-17T19:38:24Z", "ms": 995398703859.4508 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "2001-07-18", "window": { "start": { "local": "2001-07-18T19:05:56+01:00", "utc": "2001-07-18T18:05:56Z", "ms": 995479556111.673 }, "end": { "local": "2001-07-18T20:38:24+01:00", "utc": "2001-07-18T19:38:24Z", "ms": 995485104259.8558 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:30 on Wed 18 Jul to 03:03 on Thu 19 Jul.", "fact": "2001-07-18T04:30:10Z → 2001-07-19T02:03:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:06–20:38 on the 17th, 19:06–20:38 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 92 minutes on the 17th and 92 of 92 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23096 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Wednesday 18 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": "2001-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-18", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Wednesday 18 July. Trayodaśī runs from 05:30 on Wed 18 Jul to 03:03 on Thu 19 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-07-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-07-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-18", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1411, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-07-19T03:03:20+01:00", "utc": "2001-07-19T02:03:20Z", "ms": 995508199773.6665 }, "end": { "local": "2001-07-20T00:05:14+01:00", "utc": "2001-07-19T23:05:14Z", "ms": 995583914187.9492 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-19T03:03:20+01:00", "utc": "2001-07-19T02:03:20Z", "ms": 995508199773.6665 }, "end": { "local": "2001-07-20T00:05:14+01:00", "utc": "2001-07-19T23:05:14Z", "ms": 995583914187.9492 } }, "kaala": "nishita", "days": [ { "local_date": "2001-07-18", "window": { "start": { "local": "2001-07-19T00:28:42+01:00", "utc": "2001-07-18T23:28:42Z", "ms": 995498921667.3585 }, "end": { "local": "2001-07-19T01:16:42+01:00", "utc": "2001-07-19T00:16:42Z", "ms": 995501801667.3585 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-07-19", "window": { "start": { "local": "2001-07-20T00:28:46+01:00", "utc": "2001-07-19T23:28:46Z", "ms": 995585325676.9368 }, "end": { "local": "2001-07-20T01:16:46+01:00", "utc": "2001-07-20T00:16:46Z", "ms": 995588205676.9368 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:03 on Thu 19 Jul to 00:05 on Fri 20 Jul.", "fact": "2001-07-19T02:03:20Z → 2001-07-19T23:05:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:29–01:17 on the 18th, 00:29–01:17 on the 19th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1411 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Wednesday 18 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-07-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-18", "confidence": "boundary" } ], "quote": "In Lagos, Śivarātri 2001 falls on Wednesday 18 July. Caturdaśī runs from 03:03 on Thu 19 Jul to 00:05 on Fri 20 Jul, and reaches niśītha on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-07-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 927, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-07-22T13:32:17+01:00", "utc": "2001-07-22T12:32:17Z", "ms": 995805136923.4675 }, "end": { "local": "2001-07-23T10:00:25+01:00", "utc": "2001-07-23T09:00:25Z", "ms": 995878824800.739 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-22T13:32:17+01:00", "utc": "2001-07-22T12:32:17Z", "ms": 995805136923.4675 }, "end": { "local": "2001-07-23T10:00:25+01:00", "utc": "2001-07-23T09:00:25Z", "ms": 995878824800.739 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-07-22", "window": { "start": { "local": "2001-07-22T12:28:50+01:00", "utc": "2001-07-22T11:28:50Z", "ms": 995801330016.7234 }, "end": { "local": "2001-07-22T13:16:50+01:00", "utc": "2001-07-22T12:16:50Z", "ms": 995804210016.7234 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-07-23", "window": { "start": { "local": "2001-07-23T12:28:52+01:00", "utc": "2001-07-23T11:28:52Z", "ms": 995887731947.9534 }, "end": { "local": "2001-07-23T13:16:52+01:00", "utc": "2001-07-23T12:16:52Z", "ms": 995890611947.9534 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 13:32 on Sun 22 Jul to 10:00 on Mon 23 Jul.", "fact": "2001-07-22T12:32:17Z → 2001-07-23T09:00:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 22nd, 12:29–13:17 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 927 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Lagos, 2001: Monday 23 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-22", "confidence": "determinate" } ], "quote": "In Lagos, Madhusravā Tṛtīyā (Hariyali Teej) 2001 falls on Monday 23 July. Tṛtīyā runs from 13:32 on Sun 22 Jul to 10:00 on Mon 23 Jul, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-07-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8907, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-07-23T10:00:25+01:00", "utc": "2001-07-23T09:00:25Z", "ms": 995878824800.739 }, "end": { "local": "2001-07-24T06:43:55+01:00", "utc": "2001-07-24T05:43:55Z", "ms": 995953435142.5002 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-23T10:00:25+01:00", "utc": "2001-07-23T09:00:25Z", "ms": 995878824800.739 }, "end": { "local": "2001-07-24T06:43:55+01:00", "utc": "2001-07-24T05:43:55Z", "ms": 995953435142.5002 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-07-23", "window": { "start": { "local": "2001-07-23T12:28:52+01:00", "utc": "2001-07-23T11:28:52Z", "ms": 995887731947.9534 }, "end": { "local": "2001-07-23T13:16:52+01:00", "utc": "2001-07-23T12:16:52Z", "ms": 995890611947.9534 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-07-24", "window": { "start": { "local": "2001-07-24T12:28:53+01:00", "utc": "2001-07-24T11:28:53Z", "ms": 995974133281.6013 }, "end": { "local": "2001-07-24T13:16:53+01:00", "utc": "2001-07-24T12:16:53Z", "ms": 995977013281.6013 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:00 on Mon 23 Jul to 06:44 on Tue 24 Jul.", "fact": "2001-07-23T09:00:25Z → 2001-07-24T05:43:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 23rd, 12:29–13:17 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8907 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Monday 23 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": "2001-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-23", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Monday 23 July. Caturthī runs from 10:00 on Mon 23 Jul to 06:44 on Tue 24 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20698, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-07-24T06:43:55+01:00", "utc": "2001-07-24T05:43:55Z", "ms": 995953435142.5002 }, "end": { "local": "2001-07-25T03:51:21+01:00", "utc": "2001-07-25T02:51:21Z", "ms": 996029481231.8394 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-24T06:43:55+01:00", "utc": "2001-07-24T05:43:55Z", "ms": 995953435142.5002 }, "end": { "local": "2001-07-25T03:51:21+01:00", "utc": "2001-07-25T02:51:21Z", "ms": 996029481231.8394 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-07-24", "window": { "start": { "local": "2001-07-24T12:28:53+01:00", "utc": "2001-07-24T11:28:53Z", "ms": 995974133281.6013 }, "end": { "local": "2001-07-24T13:16:53+01:00", "utc": "2001-07-24T12:16:53Z", "ms": 995977013281.6013 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-07-25", "window": { "start": { "local": "2001-07-25T12:28:54+01:00", "utc": "2001-07-25T11:28:54Z", "ms": 996060534007.9203 }, "end": { "local": "2001-07-25T13:16:54+01:00", "utc": "2001-07-25T12:16:54Z", "ms": 996063414007.9203 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:44 on Tue 24 Jul to 03:51 on Wed 25 Jul.", "fact": "2001-07-24T05:43:55Z → 2001-07-25T02:51:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 24th, 12:29–13:17 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20698 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Lagos, 2001: Tuesday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-24", "confidence": "determinate" } ], "quote": "In Lagos, Nāga Pañcamī 2001 falls on Tuesday 24 July. Pañcamī runs from 06:44 on Tue 24 Jul to 03:51 on Wed 25 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-07-30", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26132, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-07-29T22:33:46+01:00", "utc": "2001-07-29T21:33:46Z", "ms": 996442426025.9877 }, "end": { "local": "2001-07-30T23:25:24+01:00", "utc": "2001-07-30T22:25:24Z", "ms": 996531924256.0852 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-29T22:33:46+01:00", "utc": "2001-07-29T21:33:46Z", "ms": 996442426025.9877 }, "end": { "local": "2001-07-30T23:25:24+01:00", "utc": "2001-07-30T22:25:24Z", "ms": 996531924256.0852 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-07-30", "window": { "start": { "local": "2001-07-30T06:40:52+01:00", "utc": "2001-07-30T05:40:52Z", "ms": 996471651704.01 }, "end": { "local": "2001-07-30T06:40:52+01:00", "utc": "2001-07-30T05:40:52Z", "ms": 996471651704.01 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-07-31", "window": { "start": { "local": "2001-07-31T06:40:57+01:00", "utc": "2001-07-31T05:40:57Z", "ms": 996558056568.216 }, "end": { "local": "2001-07-31T06:40:57+01:00", "utc": "2001-07-31T05:40:57Z", "ms": 996558056568.216 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:34 on Sun 29 Jul to 23:25 on Mon 30 Jul.", "fact": "2001-07-29T21:33:46Z → 2001-07-30T22:25:24Z" }, { "step": "kaala", "text": "Sunrise is at 06:41 on the 30th and 06:41 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26132 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Lagos, 2001: Monday 30 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": "2001-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-30", "confidence": "determinate" } ], "quote": "In Lagos, Putradā Ekādaśī 2001 falls on Monday 30 July. Ekādaśī runs from 22:34 on Sun 29 Jul to 23:25 on Mon 30 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36516, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-07-30T23:25:24+01:00", "utc": "2001-07-30T22:25:24Z", "ms": 996531924256.0852 }, "end": { "local": "2001-08-01T00:47:23+01:00", "utc": "2001-07-31T23:47:23Z", "ms": 996623242970.0425 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-07-30T23:25:24+01:00", "utc": "2001-07-30T22:25:24Z", "ms": 996531924256.0852 }, "end": { "local": "2001-08-01T00:47:23+01:00", "utc": "2001-07-31T23:47:23Z", "ms": 996623242970.0425 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-07-30", "window": { "start": { "local": "2001-07-30T12:28:48+01:00", "utc": "2001-07-30T11:28:48Z", "ms": 996492528359.9064 }, "end": { "local": "2001-07-30T13:16:48+01:00", "utc": "2001-07-30T12:16:48Z", "ms": 996495408359.9064 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-07-31", "window": { "start": { "local": "2001-07-31T12:28:45+01:00", "utc": "2001-07-31T11:28:45Z", "ms": 996578925364.6946 }, "end": { "local": "2001-07-31T13:16:45+01:00", "utc": "2001-07-31T12:16:45Z", "ms": 996581805364.6946 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:25 on Mon 30 Jul to 00:47 on Wed 1 Aug.", "fact": "2001-07-30T22:25:24Z → 2001-07-31T23:47:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 30th, 12:29–13:17 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36516 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Lagos, 2001: Tuesday 31 July.", "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": "2001-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-07-31", "confidence": "determinate" } ], "quote": "In Lagos, Dāmodara Dvādaśī 2001 falls on Tuesday 31 July. Dvādaśī runs from 23:25 on Mon 30 Jul to 00:47 on Wed 1 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-08-01", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14997, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-08-01T00:47:23+01:00", "utc": "2001-07-31T23:47:23Z", "ms": 996623242970.0425 }, "end": { "local": "2001-08-02T02:33:43+01:00", "utc": "2001-08-02T01:33:43Z", "ms": 996716023283.9824 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-08-01T00:47:23+01:00", "utc": "2001-07-31T23:47:23Z", "ms": 996623242970.0425 }, "end": { "local": "2001-08-02T02:33:43+01:00", "utc": "2001-08-02T01:33:43Z", "ms": 996716023283.9824 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-07-31", "window": { "start": { "local": "2001-07-31T19:04:34+01:00", "utc": "2001-07-31T18:04:34Z", "ms": 996602674161.1732 }, "end": { "local": "2001-07-31T20:37:26+01:00", "utc": "2001-07-31T19:37:26Z", "ms": 996608245731.815 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "2001-08-01", "window": { "start": { "local": "2001-08-01T19:04:23+01:00", "utc": "2001-08-01T18:04:23Z", "ms": 996689062560.9521 }, "end": { "local": "2001-08-01T20:37:16+01:00", "utc": "2001-08-01T19:37:16Z", "ms": 996694636195.7821 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:47 on Wed 1 Aug to 02:34 on Thu 2 Aug.", "fact": "2001-07-31T23:47:23Z → 2001-08-02T01:33:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:37 on the 31st, 19:04–20:37 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 93 minutes on the 31st and 93 of 93 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 14997 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Wednesday 1 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": "2001-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-01", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Wednesday 1 August. Trayodaśī runs from 00:47 on Wed 1 Aug to 02:34 on Thu 2 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-03", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 873, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-08-03T04:38:24+01:00", "utc": "2001-08-03T03:38:24Z", "ms": 996809904017.8273 }, "end": { "local": "2001-08-04T06:55:44+01:00", "utc": "2001-08-04T05:55:44Z", "ms": 996904544041.09 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2001-08-03T17:45:50+01:00", "utc": "2001-08-03T16:45:50Z", "ms": 996857149512.0214 }, "end": { "local": "2001-08-04T06:55:44+01:00", "utc": "2001-08-04T05:55:44Z", "ms": 996904544041.09 } }, "kaala": "day", "days": [ { "local_date": "2001-08-03", "window": { "start": { "local": "2001-08-03T06:41:08+01:00", "utc": "2001-08-03T05:41:08Z", "ms": 996817268212.2571 }, "end": { "local": "2001-08-04T06:41:11+01:00", "utc": "2001-08-04T05:41:11Z", "ms": 996903671112.7927 } }, "covered_min": 775, "window_min": 1440, "qualifies": true }, { "local_date": "2001-08-04", "window": { "start": { "local": "2001-08-04T06:41:11+01:00", "utc": "2001-08-04T05:41:11Z", "ms": 996903671112.7927 }, "end": { "local": "2001-08-05T06:41:14+01:00", "utc": "2001-08-05T05:41:14Z", "ms": 996990073526.1382 } }, "covered_min": 15, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:38 on Fri 3 Aug to 06:56 on Sat 4 Aug. Its second half begins at 17:46 on Fri 3 Aug.", "fact": "2001-08-03T03:38:24Z → 2001-08-04T05:55:44Z · second half from 2001-08-03T16:45:50Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:41 on the 3rd, and from 06:41 on the 4th.", "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 775 of 1440 minutes on the 3rd and 15 of 1440 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 873 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Lagos, 2001: Friday 3 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-08-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-03", "confidence": "boundary" } ], "quote": "In Lagos, Rakṣā Bandhana (Rakhi) 2001 falls on Friday 3 August. The second half of Pūrṇimā runs from 17:46 on Fri 3 Aug to 06:56 on Sat 4 Aug and falls on two days: 775 minutes of it on the 3rd, 15 on the 4th; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19963, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-08-03T04:38:24+01:00", "utc": "2001-08-03T03:38:24Z", "ms": 996809904017.8273 }, "end": { "local": "2001-08-04T06:55:44+01:00", "utc": "2001-08-04T05:55:44Z", "ms": 996904544041.09 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2001-08-03T04:38:24+01:00", "utc": "2001-08-03T03:38:24Z", "ms": 996809904017.8273 }, "end": { "local": "2001-08-04T06:55:44+01:00", "utc": "2001-08-04T05:55:44Z", "ms": 996904544041.09 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-03", "window": { "start": { "local": "2001-08-03T12:28:33+01:00", "utc": "2001-08-03T11:28:33Z", "ms": 996838112683.0493 }, "end": { "local": "2001-08-03T13:16:33+01:00", "utc": "2001-08-03T12:16:33Z", "ms": 996840992683.0493 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-04", "window": { "start": { "local": "2001-08-04T12:28:27+01:00", "utc": "2001-08-04T11:28:27Z", "ms": 996924507238.4392 }, "end": { "local": "2001-08-04T13:16:27+01:00", "utc": "2001-08-04T12:16:27Z", "ms": 996927387238.4392 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:38 on Fri 3 Aug to 06:56 on Sat 4 Aug.", "fact": "2001-08-03T03:38:24Z → 2001-08-04T05:55:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 3rd, 12:28–13:16 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 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: unstated → only-day · margin 19963 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Lagos, 2001: Friday 3 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": "2001-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-03", "confidence": "determinate" } ], "quote": "In Lagos, Ṛṣi Tarpaṇa 2001 falls on Friday 3 August. Pūrṇimā runs from 04:38 on Fri 3 Aug to 06:56 on Sat 4 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32853, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2001-08-05T09:20:22+01:00", "utc": "2001-08-05T08:20:22Z", "ms": 996999622136.6564 }, "end": { "local": "2001-08-06T11:46:58+01:00", "utc": "2001-08-06T10:46:58Z", "ms": 997094818146.1157 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-05T09:20:22+01:00", "utc": "2001-08-05T08:20:22Z", "ms": 996999622136.6564 }, "end": { "local": "2001-08-06T11:46:58+01:00", "utc": "2001-08-06T10:46:58Z", "ms": 997094818146.1157 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-08-05", "window": { "start": { "local": "2001-08-05T20:13:22+01:00", "utc": "2001-08-05T19:13:22Z", "ms": 997038802150.934 }, "end": { "local": "2001-08-05T20:13:22+01:00", "utc": "2001-08-05T19:13:22Z", "ms": 997038802150.934 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-08-06", "window": { "start": { "local": "2001-08-06T20:54:31+01:00", "utc": "2001-08-06T19:54:31Z", "ms": 997127671205.6195 }, "end": { "local": "2001-08-06T20:54:31+01:00", "utc": "2001-08-06T19:54:31Z", "ms": 997127671205.6195 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 09:20 on Sun 5 Aug to 11:47 on Mon 6 Aug.", "fact": "2001-08-05T08:20:22Z → 2001-08-06T10:46:58Z" }, { "step": "kaala", "text": "Moonrise is at 20:13 on the 5th and 20:55 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32853 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Lagos, 2001: Sunday 5 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": "2001-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-05", "confidence": "determinate" } ], "quote": "In Lagos, Aśūnya Śayana Vrata 2001 falls on Sunday 5 August. Dvitīyā runs from 09:20 on Sun 5 Aug to 11:47 on Mon 6 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2476, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-08-06T11:46:58+01:00", "utc": "2001-08-06T10:46:58Z", "ms": 997094818146.1157 }, "end": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-06T11:46:58+01:00", "utc": "2001-08-06T10:46:58Z", "ms": 997094818146.1157 }, "end": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-06", "window": { "start": { "local": "2001-08-06T12:28:15+01:00", "utc": "2001-08-06T11:28:15Z", "ms": 997097294557.6558 }, "end": { "local": "2001-08-06T13:16:15+01:00", "utc": "2001-08-06T12:16:15Z", "ms": 997100174557.6558 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-07", "window": { "start": { "local": "2001-08-07T12:28:07+01:00", "utc": "2001-08-07T11:28:07Z", "ms": 997183687335.187 }, "end": { "local": "2001-08-07T13:16:07+01:00", "utc": "2001-08-07T12:16:07Z", "ms": 997186567335.187 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:47 on Mon 6 Aug to 14:10 on Tue 7 Aug.", "fact": "2001-08-06T10:46:58Z → 2001-08-07T13:09:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 6th, 12:28–13:16 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 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 2476 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Lagos, 2001: Tuesday 7 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": "2001-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-07", "confidence": "boundary" } ], "quote": "In Lagos, Kajjalī Tṛtīyā (Kajari Teej) 2001 falls on Tuesday 7 August. Tṛtīyā runs from 11:47 on Mon 6 Aug to 14:10 on Tue 7 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 735, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 }, "end": { "local": "2001-08-08T16:22:09+01:00", "utc": "2001-08-08T15:22:09Z", "ms": 997284129170.3484 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 }, "end": { "local": "2001-08-08T16:22:09+01:00", "utc": "2001-08-08T15:22:09Z", "ms": 997284129170.3484 } }, "kaala": "sayahna", "days": [ { "local_date": "2001-08-07", "window": { "start": { "local": "2001-08-07T16:34:38+01:00", "utc": "2001-08-07T15:34:38Z", "ms": 997198477593.852 }, "end": { "local": "2001-08-07T19:02:58+01:00", "utc": "2001-08-07T18:02:58Z", "ms": 997207377766.2954 } }, "covered_min": 148, "window_min": 148, "qualifies": true }, { "local_date": "2001-08-08", "window": { "start": { "local": "2001-08-08T16:34:25+01:00", "utc": "2001-08-08T15:34:25Z", "ms": 997284864529.4886 }, "end": { "local": "2001-08-08T19:02:41+01:00", "utc": "2001-08-08T18:02:41Z", "ms": 997293761192.7256 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:10 on Tue 7 Aug to 16:22 on Wed 8 Aug.", "fact": "2001-08-07T13:09:46Z → 2001-08-08T15:22:09Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:35–19:03 on the 7th, 16:34–19:03 on the 8th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 148 of 148 minutes on the 7th and 0 of 148 on the 8th.", "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 735 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Lagos, 2001: Tuesday 7 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": "2001-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-07", "confidence": "determinate" } ], "quote": "In Lagos, Bahulā Caturthī 2001 falls on Tuesday 7 August. Caturthī runs from 14:10 on Tue 7 Aug to 16:22 on Wed 8 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-08-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21064, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 }, "end": { "local": "2001-08-08T16:22:09+01:00", "utc": "2001-08-08T15:22:09Z", "ms": 997284129170.3484 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-07T14:09:46+01:00", "utc": "2001-08-07T13:09:46Z", "ms": 997189785577.7899 }, "end": { "local": "2001-08-08T16:22:09+01:00", "utc": "2001-08-08T15:22:09Z", "ms": 997284129170.3484 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-08-07", "window": { "start": { "local": "2001-08-07T21:34:12+01:00", "utc": "2001-08-07T20:34:12Z", "ms": 997216452472.8812 }, "end": { "local": "2001-08-07T21:34:12+01:00", "utc": "2001-08-07T20:34:12Z", "ms": 997216452472.8812 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-08-08", "window": { "start": { "local": "2001-08-08T22:13:13+01:00", "utc": "2001-08-08T21:13:13Z", "ms": 997305192888.0494 }, "end": { "local": "2001-08-08T22:13:13+01:00", "utc": "2001-08-08T21:13:13Z", "ms": 997305192888.0494 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:10 on Tue 7 Aug to 16:22 on Wed 8 Aug.", "fact": "2001-08-07T13:09:46Z → 2001-08-08T15:22:09Z" }, { "step": "kaala", "text": "Moonrise is at 21:34 on the 7th and 22:13 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21064 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Tuesday 7 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": "2001-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-07", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Tuesday 7 August. Caturthī runs from 14:10 on Tue 7 Aug to 16:22 on Wed 8 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18049, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-08-09T18:16:40+01:00", "utc": "2001-08-09T17:16:40Z", "ms": 997377400447.854 }, "end": { "local": "2001-08-10T19:45:19+01:00", "utc": "2001-08-10T18:45:19Z", "ms": 997469119397.3527 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-09T18:16:40+01:00", "utc": "2001-08-09T17:16:40Z", "ms": 997377400447.854 }, "end": { "local": "2001-08-10T19:45:19+01:00", "utc": "2001-08-10T18:45:19Z", "ms": 997469119397.3527 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-09", "window": { "start": { "local": "2001-08-09T12:27:51+01:00", "utc": "2001-08-09T11:27:51Z", "ms": 997356471163.9937 }, "end": { "local": "2001-08-09T13:15:51+01:00", "utc": "2001-08-09T12:15:51Z", "ms": 997359351163.9937 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-10", "window": { "start": { "local": "2001-08-10T12:27:42+01:00", "utc": "2001-08-10T11:27:42Z", "ms": 997442862231.6041 }, "end": { "local": "2001-08-10T13:15:42+01:00", "utc": "2001-08-10T12:15:42Z", "ms": 997445742231.6041 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:17 on Thu 9 Aug to 19:45 on Fri 10 Aug.", "fact": "2001-08-09T17:16:40Z → 2001-08-10T18:45:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 9th, 12:28–13:16 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18049 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Lagos, 2001: Friday 10 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": "2001-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-10", "confidence": "determinate" } ], "quote": "In Lagos, Hala Ṣaṣṭhī 2001 falls on Friday 10 August. Ṣaṣṭhī runs from 18:17 on Thu 9 Aug to 19:45 on Fri 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12724, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-08-11T20:40:21+01:00", "utc": "2001-08-11T19:40:21Z", "ms": 997558821330.8066 }, "end": { "local": "2001-08-12T20:55:18+01:00", "utc": "2001-08-12T19:55:18Z", "ms": 997646117702.5957 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-11T20:40:21+01:00", "utc": "2001-08-11T19:40:21Z", "ms": 997558821330.8066 }, "end": { "local": "2001-08-12T20:55:18+01:00", "utc": "2001-08-12T19:55:18Z", "ms": 997646117702.5957 } }, "kaala": "nishita", "days": [ { "local_date": "2001-08-11", "window": { "start": { "local": "2001-08-12T00:27:32+01:00", "utc": "2001-08-11T23:27:32Z", "ms": 997572452304.8325 }, "end": { "local": "2001-08-12T01:15:32+01:00", "utc": "2001-08-12T00:15:32Z", "ms": 997575332304.8325 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-12", "window": { "start": { "local": "2001-08-13T00:27:22+01:00", "utc": "2001-08-12T23:27:22Z", "ms": 997658842049.842 }, "end": { "local": "2001-08-13T01:15:22+01:00", "utc": "2001-08-13T00:15:22Z", "ms": 997661722049.842 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:40 on Sat 11 Aug to 20:55 on Sun 12 Aug.", "fact": "2001-08-11T19:40:21Z → 2001-08-12T19:55:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:28–01:16 on the 11th, 00:27–01:15 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12724 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Lagos, 2001: Saturday 11 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": "2001-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-11", "confidence": "determinate" } ], "quote": "In Lagos, Janmāṣṭamī 2001 falls on Saturday 11 August. Aṣṭamī runs from 20:40 on Sat 11 Aug to 20:55 on Sun 12 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23377, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-08-10T19:45:19+01:00", "utc": "2001-08-10T18:45:19Z", "ms": 997469119397.3527 }, "end": { "local": "2001-08-11T20:40:21+01:00", "utc": "2001-08-11T19:40:21Z", "ms": 997558821330.8066 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-10T19:45:19+01:00", "utc": "2001-08-10T18:45:19Z", "ms": 997469119397.3527 }, "end": { "local": "2001-08-11T20:40:21+01:00", "utc": "2001-08-11T19:40:21Z", "ms": 997558821330.8066 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-10", "window": { "start": { "local": "2001-08-10T12:27:42+01:00", "utc": "2001-08-10T11:27:42Z", "ms": 997442862231.6041 }, "end": { "local": "2001-08-10T13:15:42+01:00", "utc": "2001-08-10T12:15:42Z", "ms": 997445742231.6041 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-11", "window": { "start": { "local": "2001-08-11T12:27:33+01:00", "utc": "2001-08-11T11:27:33Z", "ms": 997529252746.0483 }, "end": { "local": "2001-08-11T13:15:33+01:00", "utc": "2001-08-11T12:15:33Z", "ms": 997532132746.0483 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:45 on Fri 10 Aug to 20:40 on Sat 11 Aug.", "fact": "2001-08-10T18:45:19Z → 2001-08-11T19:40:21Z" }, { "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": "Saptamī 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 23377 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Lagos, 2001: Saturday 11 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": "2001-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-11", "confidence": "determinate" } ], "quote": "In Lagos, Śītalā Saptamī 2001 falls on Saturday 11 August. Saptamī runs from 19:45 on Fri 10 Aug to 20:40 on Sat 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-08-15", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37818, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-08-14T19:10:45+01:00", "utc": "2001-08-14T18:10:45Z", "ms": 997812644597.4845 }, "end": { "local": "2001-08-15T17:11:30+01:00", "utc": "2001-08-15T16:11:30Z", "ms": 997891890149.3334 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-14T19:10:45+01:00", "utc": "2001-08-14T18:10:45Z", "ms": 997812644597.4845 }, "end": { "local": "2001-08-15T17:11:30+01:00", "utc": "2001-08-15T16:11:30Z", "ms": 997891890149.3334 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-08-14", "window": { "start": { "local": "2001-08-14T06:41:14+01:00", "utc": "2001-08-14T05:41:14Z", "ms": 997767673993.2932 }, "end": { "local": "2001-08-14T06:41:14+01:00", "utc": "2001-08-14T05:41:14Z", "ms": 997767673993.2932 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-08-15", "window": { "start": { "local": "2001-08-15T06:41:12+01:00", "utc": "2001-08-15T05:41:12Z", "ms": 997854071777.0344 }, "end": { "local": "2001-08-15T06:41:12+01:00", "utc": "2001-08-15T05:41:12Z", "ms": 997854071777.0344 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:11 on Tue 14 Aug to 17:12 on Wed 15 Aug.", "fact": "2001-08-14T18:10:45Z → 2001-08-15T16:11:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:41 on the 14th and 06:41 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37818 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Lagos, 2001: Wednesday 15 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": "2001-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-15", "confidence": "determinate" } ], "quote": "In Lagos, Ajā Ekādaśī 2001 falls on Wednesday 15 August. Ekādaśī runs from 19:11 on Tue 14 Aug to 17:12 on Wed 15 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-08-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-08-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16047, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-08-16T14:32:39+01:00", "utc": "2001-08-16T13:32:39Z", "ms": 997968758715.8007 }, "end": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-16T14:32:39+01:00", "utc": "2001-08-16T13:32:39Z", "ms": 997968758715.8007 }, "end": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-08-16", "window": { "start": { "local": "2001-08-16T19:00:06+01:00", "utc": "2001-08-16T18:00:06Z", "ms": 997984805517.5897 }, "end": { "local": "2001-08-16T20:33:34+01:00", "utc": "2001-08-16T19:33:34Z", "ms": 997990413587.771 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "2001-08-17", "window": { "start": { "local": "2001-08-17T18:59:43+01:00", "utc": "2001-08-17T17:59:43Z", "ms": 998071183342.6672 }, "end": { "local": "2001-08-17T20:33:14+01:00", "utc": "2001-08-17T19:33:14Z", "ms": 998076793901.526 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:33 on Thu 16 Aug to 11:21 on Fri 17 Aug.", "fact": "2001-08-16T13:32:39Z → 2001-08-17T10:21:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:00–20:34 on the 16th, 19:00–20:33 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 93 of 93 minutes on the 16th and 0 of 94 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 16047 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Thursday 16 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": "2001-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-16", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Thursday 16 August. Trayodaśī runs from 14:33 on Thu 16 Aug to 11:21 on Fri 17 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-08-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27522, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 }, "end": { "local": "2001-08-18T07:45:15+01:00", "utc": "2001-08-18T06:45:15Z", "ms": 998117115317.6973 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 }, "end": { "local": "2001-08-18T07:45:15+01:00", "utc": "2001-08-18T06:45:15Z", "ms": 998117115317.6973 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-08-17", "window": { "start": { "local": "2001-08-17T18:59:43+01:00", "utc": "2001-08-17T17:59:43Z", "ms": 998071183342.6672 }, "end": { "local": "2001-08-17T20:33:14+01:00", "utc": "2001-08-17T19:33:14Z", "ms": 998076793901.526 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "2001-08-18", "window": { "start": { "local": "2001-08-18T18:59:21+01:00", "utc": "2001-08-18T17:59:21Z", "ms": 998157560598.0449 }, "end": { "local": "2001-08-18T20:32:54+01:00", "utc": "2001-08-18T19:32:54Z", "ms": 998163173664.8708 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:21 on Fri 17 Aug to 07:45 on Sat 18 Aug.", "fact": "2001-08-17T10:21:01Z → 2001-08-18T06:45:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:00–20:33 on the 17th, 18:59–20:33 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 17th and 0 of 94 on the 18th.", "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 27522 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Lagos, 2001: Friday 17 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": "2001-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-17", "confidence": "determinate" } ], "quote": "In Lagos, Aghora Caturdaśī 2001 falls on Friday 17 August. Caturdaśī runs from 11:21 on Fri 17 Aug to 07:45 on Sat 18 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/shivaratri?on=2001-08-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23452, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 }, "end": { "local": "2001-08-18T07:45:15+01:00", "utc": "2001-08-18T06:45:15Z", "ms": 998117115317.6973 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-17T11:21:01+01:00", "utc": "2001-08-17T10:21:01Z", "ms": 998043660851.7576 }, "end": { "local": "2001-08-18T07:45:15+01:00", "utc": "2001-08-18T06:45:15Z", "ms": 998117115317.6973 } }, "kaala": "nishita", "days": [ { "local_date": "2001-08-16", "window": { "start": { "local": "2001-08-17T00:26:36+01:00", "utc": "2001-08-16T23:26:36Z", "ms": 998004395780.7693 }, "end": { "local": "2001-08-17T01:14:36+01:00", "utc": "2001-08-17T00:14:36Z", "ms": 998007275780.7693 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-17", "window": { "start": { "local": "2001-08-18T00:26:23+01:00", "utc": "2001-08-17T23:26:23Z", "ms": 998090782938.3877 }, "end": { "local": "2001-08-18T01:14:23+01:00", "utc": "2001-08-18T00:14:23Z", "ms": 998093662938.3877 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:21 on Fri 17 Aug to 07:45 on Sat 18 Aug.", "fact": "2001-08-17T10:21:01Z → 2001-08-18T06:45:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:27–01:15 on the 16th, 00:26–01:14 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23452 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Friday 17 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": "2001-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-17", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Friday 17 August. Caturdaśī runs from 11:21 on Fri 17 Aug to 07:45 on Sat 18 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-08-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30642, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-08-19T03:55:16+01:00", "utc": "2001-08-19T02:55:16Z", "ms": 998189716312.279 }, "end": { "local": "2001-08-20T00:01:44+01:00", "utc": "2001-08-19T23:01:44Z", "ms": 998262104194.95 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-19T03:55:16+01:00", "utc": "2001-08-19T02:55:16Z", "ms": 998189716312.279 }, "end": { "local": "2001-08-20T00:01:44+01:00", "utc": "2001-08-19T23:01:44Z", "ms": 998262104194.95 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-19", "window": { "start": { "local": "2001-08-19T12:25:58+01:00", "utc": "2001-08-19T11:25:58Z", "ms": 998220357945.8628 }, "end": { "local": "2001-08-19T13:13:58+01:00", "utc": "2001-08-19T12:13:58Z", "ms": 998223237945.8628 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-20", "window": { "start": { "local": "2001-08-20T12:25:44+01:00", "utc": "2001-08-20T11:25:44Z", "ms": 998306743838.6963 }, "end": { "local": "2001-08-20T13:13:44+01:00", "utc": "2001-08-20T12:13:44Z", "ms": 998309623838.6963 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 03:55 on Sun 19 Aug to 00:02 on Mon 20 Aug.", "fact": "2001-08-19T02:55:16Z → 2001-08-19T23:01:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 19th, 12:26–13:14 on the 20th.", "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 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30642 s" }, { "step": "ruling", "text": "Rudra Vrata, Lagos, 2001: Sunday 19 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": "2001-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-19", "confidence": "determinate" } ], "quote": "In Lagos, Rudra Vrata 2001 falls on Sunday 19 August. Pratipadā runs from 03:55 on Sun 19 Aug to 00:02 on Mon 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12863, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2001-08-20T20:15:39+01:00", "utc": "2001-08-20T19:15:39Z", "ms": 998334938859.9182 }, "end": { "local": "2001-08-21T16:47:53+01:00", "utc": "2001-08-21T15:47:53Z", "ms": 998408872749.3524 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-20T20:15:39+01:00", "utc": "2001-08-20T19:15:39Z", "ms": 998334938859.9182 }, "end": { "local": "2001-08-21T16:47:53+01:00", "utc": "2001-08-21T15:47:53Z", "ms": 998408872749.3524 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-20", "window": { "start": { "local": "2001-08-20T12:25:44+01:00", "utc": "2001-08-20T11:25:44Z", "ms": 998306743838.6963 }, "end": { "local": "2001-08-20T13:13:44+01:00", "utc": "2001-08-20T12:13:44Z", "ms": 998309623838.6963 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-21", "window": { "start": { "local": "2001-08-21T12:25:29+01:00", "utc": "2001-08-21T11:25:29Z", "ms": 998393129251.502 }, "end": { "local": "2001-08-21T13:13:29+01:00", "utc": "2001-08-21T12:13:29Z", "ms": 998396009251.502 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:16 on Mon 20 Aug to 16:48 on Tue 21 Aug.", "fact": "2001-08-20T19:15:39Z → 2001-08-21T15:47:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 20th, 12:25–13:13 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12863 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Lagos, 2001: Tuesday 21 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": "2001-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-21", "confidence": "determinate" } ], "quote": "In Lagos, Haritālikā Vrata (Hartalika Teej) 2001 falls on Tuesday 21 August. Tṛtīyā runs from 20:16 on Mon 20 Aug to 16:48 on Tue 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2126, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-08-21T16:47:53+01:00", "utc": "2001-08-21T15:47:53Z", "ms": 998408872749.3524 }, "end": { "local": "2001-08-22T13:48:40+01:00", "utc": "2001-08-22T12:48:40Z", "ms": 998484519698.833 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-21T16:47:53+01:00", "utc": "2001-08-21T15:47:53Z", "ms": 998408872749.3524 }, "end": { "local": "2001-08-22T13:48:40+01:00", "utc": "2001-08-22T12:48:40Z", "ms": 998484519698.833 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-21", "window": { "start": { "local": "2001-08-21T12:25:29+01:00", "utc": "2001-08-21T11:25:29Z", "ms": 998393129251.502 }, "end": { "local": "2001-08-21T13:13:29+01:00", "utc": "2001-08-21T12:13:29Z", "ms": 998396009251.502 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-22", "window": { "start": { "local": "2001-08-22T12:25:14+01:00", "utc": "2001-08-22T11:25:14Z", "ms": 998479514192.6211 }, "end": { "local": "2001-08-22T13:13:14+01:00", "utc": "2001-08-22T12:13:14Z", "ms": 998482394192.6211 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:48 on Tue 21 Aug to 13:49 on Wed 22 Aug.", "fact": "2001-08-21T15:47:53Z → 2001-08-22T12:48:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 21st, 12:25–13:13 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2126 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Lagos, 2001: Wednesday 22 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-22", "confidence": "determinate" } ], "quote": "In Lagos, Gaṇeśa Caturthī 2001 falls on Wednesday 22 August. Caturthī runs from 16:48 on Tue 21 Aug to 13:49 on Wed 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2126, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-08-22T13:48:40+01:00", "utc": "2001-08-22T12:48:40Z", "ms": 998484519698.833 }, "end": { "local": "2001-08-23T11:26:57+01:00", "utc": "2001-08-23T10:26:57Z", "ms": 998562416587.2963 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-22T13:48:40+01:00", "utc": "2001-08-22T12:48:40Z", "ms": 998484519698.833 }, "end": { "local": "2001-08-23T11:26:57+01:00", "utc": "2001-08-23T10:26:57Z", "ms": 998562416587.2963 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-22", "window": { "start": { "local": "2001-08-22T12:25:14+01:00", "utc": "2001-08-22T11:25:14Z", "ms": 998479514192.6211 }, "end": { "local": "2001-08-22T13:13:14+01:00", "utc": "2001-08-22T12:13:14Z", "ms": 998482394192.6211 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-08-23", "window": { "start": { "local": "2001-08-23T12:24:59+01:00", "utc": "2001-08-23T11:24:59Z", "ms": 998565898672.0863 }, "end": { "local": "2001-08-23T13:12:59+01:00", "utc": "2001-08-23T12:12:59Z", "ms": 998568778672.0863 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 13:49 on Wed 22 Aug to 11:27 on Thu 23 Aug.", "fact": "2001-08-22T12:48:40Z → 2001-08-23T10:26:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 22nd, 12:25–13:13 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "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: disputed → second-day · margin 2126 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Lagos, 2001: Thursday 23 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-22", "confidence": "determinate" } ], "quote": "In Lagos, Ṛṣi Pañcamī 2001 falls on Thursday 23 August. Pañcamī runs from 13:49 on Wed 22 Aug to 11:27 on Thu 23 Aug, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3482, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-08-23T11:26:57+01:00", "utc": "2001-08-23T10:26:57Z", "ms": 998562416587.2963 }, "end": { "local": "2001-08-24T09:49:38+01:00", "utc": "2001-08-24T08:49:38Z", "ms": 998642977553.9138 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-23T11:26:57+01:00", "utc": "2001-08-23T10:26:57Z", "ms": 998562416587.2963 }, "end": { "local": "2001-08-24T09:49:38+01:00", "utc": "2001-08-24T08:49:38Z", "ms": 998642977553.9138 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-23", "window": { "start": { "local": "2001-08-23T12:24:59+01:00", "utc": "2001-08-23T11:24:59Z", "ms": 998565898672.0863 }, "end": { "local": "2001-08-23T13:12:59+01:00", "utc": "2001-08-23T12:12:59Z", "ms": 998568778672.0863 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-24", "window": { "start": { "local": "2001-08-24T12:24:43+01:00", "utc": "2001-08-24T11:24:43Z", "ms": 998652282701.6433 }, "end": { "local": "2001-08-24T13:12:43+01:00", "utc": "2001-08-24T12:12:43Z", "ms": 998655162701.6433 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:27 on Thu 23 Aug to 09:50 on Fri 24 Aug.", "fact": "2001-08-23T10:26:57Z → 2001-08-24T08:49:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 23rd, 12:25–13:13 on the 24th.", "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 23rd and 0 of 48 on the 24th.", "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 3482 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Lagos, 2001: Thursday 23 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-23", "confidence": "determinate" } ], "quote": "In Lagos, Sūrya Ṣaṣṭhī (Bhādrapada) 2001 falls on Thursday 23 August. Ṣaṣṭhī runs from 11:27 on Thu 23 Aug to 09:50 on Fri 24 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9305, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-08-24T09:49:38+01:00", "utc": "2001-08-24T08:49:38Z", "ms": 998642977553.9138 }, "end": { "local": "2001-08-25T09:00:46+01:00", "utc": "2001-08-25T08:00:46Z", "ms": 998726445610.123 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-24T09:49:38+01:00", "utc": "2001-08-24T08:49:38Z", "ms": 998642977553.9138 }, "end": { "local": "2001-08-25T09:00:46+01:00", "utc": "2001-08-25T08:00:46Z", "ms": 998726445610.123 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-24", "window": { "start": { "local": "2001-08-24T12:24:43+01:00", "utc": "2001-08-24T11:24:43Z", "ms": 998652282701.6433 }, "end": { "local": "2001-08-24T13:12:43+01:00", "utc": "2001-08-24T12:12:43Z", "ms": 998655162701.6433 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-25", "window": { "start": { "local": "2001-08-25T12:24:26+01:00", "utc": "2001-08-25T11:24:26Z", "ms": 998738666294.6045 }, "end": { "local": "2001-08-25T13:12:26+01:00", "utc": "2001-08-25T12:12:26Z", "ms": 998741546294.6045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:50 on Fri 24 Aug to 09:01 on Sat 25 Aug.", "fact": "2001-08-24T08:49:38Z → 2001-08-25T08:00:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 24th, 12:24–13:12 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9305 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Lagos, 2001: Friday 24 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-24", "confidence": "determinate" } ], "quote": "In Lagos, Muktābharaṇa Vrata 2001 falls on Friday 24 August. Saptamī runs from 09:50 on Fri 24 Aug to 09:01 on Sat 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12197, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-08-25T09:00:46+01:00", "utc": "2001-08-25T08:00:46Z", "ms": 998726445610.123 }, "end": { "local": "2001-08-26T09:00:53+01:00", "utc": "2001-08-26T08:00:53Z", "ms": 998812852866.8911 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-25T09:00:46+01:00", "utc": "2001-08-25T08:00:46Z", "ms": 998726445610.123 }, "end": { "local": "2001-08-26T09:00:53+01:00", "utc": "2001-08-26T08:00:53Z", "ms": 998812852866.8911 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-25", "window": { "start": { "local": "2001-08-25T12:24:26+01:00", "utc": "2001-08-25T11:24:26Z", "ms": 998738666294.6045 }, "end": { "local": "2001-08-25T13:12:26+01:00", "utc": "2001-08-25T12:12:26Z", "ms": 998741546294.6045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-26", "window": { "start": { "local": "2001-08-26T12:24:09+01:00", "utc": "2001-08-26T11:24:09Z", "ms": 998825049465.6317 }, "end": { "local": "2001-08-26T13:12:09+01:00", "utc": "2001-08-26T12:12:09Z", "ms": 998827929465.6317 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:01 on Sat 25 Aug to 09:01 on Sun 26 Aug.", "fact": "2001-08-25T08:00:46Z → 2001-08-26T08:00:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 25th, 12:24–13:12 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12197 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Lagos, 2001: Saturday 25 August.", "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": "2001-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-25", "confidence": "determinate" } ], "quote": "In Lagos, Rādhāṣṭamī 2001 falls on Saturday 25 August. Aṣṭamī runs from 09:01 on Sat 25 Aug to 09:01 on Sun 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-08-29", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16299, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-08-28T11:11:44+01:00", "utc": "2001-08-28T10:11:44Z", "ms": 998993504161.0176 }, "end": { "local": "2001-08-29T13:06:50+01:00", "utc": "2001-08-29T12:06:50Z", "ms": 999086810146.1306 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-28T11:11:44+01:00", "utc": "2001-08-28T10:11:44Z", "ms": 998993504161.0176 }, "end": { "local": "2001-08-29T13:06:50+01:00", "utc": "2001-08-29T12:06:50Z", "ms": 999086810146.1306 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-08-28", "window": { "start": { "local": "2001-08-28T06:40:05+01:00", "utc": "2001-08-28T05:40:05Z", "ms": 998977204971.0726 }, "end": { "local": "2001-08-28T06:40:05+01:00", "utc": "2001-08-28T05:40:05Z", "ms": 998977204971.0726 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-08-29", "window": { "start": { "local": "2001-08-29T06:39:57+01:00", "utc": "2001-08-29T05:39:57Z", "ms": 999063597170.8524 }, "end": { "local": "2001-08-29T06:39:57+01:00", "utc": "2001-08-29T05:39:57Z", "ms": 999063597170.8524 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:12 on Tue 28 Aug to 13:07 on Wed 29 Aug.", "fact": "2001-08-28T10:11:44Z → 2001-08-29T12:06:50Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 28th and 06:40 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16299 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Lagos, 2001: Wednesday 29 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": "2001-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-29", "confidence": "determinate" } ], "quote": "In Lagos, Parivartanī Ekādaśī 2001 falls on Wednesday 29 August. Ekādaśī runs from 11:12 on Tue 28 Aug to 13:07 on Wed 29 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-08-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-30", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 266, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-08-29T13:06:50+01:00", "utc": "2001-08-29T12:06:50Z", "ms": 999086810146.1306 }, "end": { "local": "2001-08-30T15:22:08+01:00", "utc": "2001-08-30T14:22:08Z", "ms": 999181328458.9171 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-29T13:06:50+01:00", "utc": "2001-08-29T12:06:50Z", "ms": 999086810146.1306 }, "end": { "local": "2001-08-30T15:22:08+01:00", "utc": "2001-08-30T14:22:08Z", "ms": 999181328458.9171 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-08-29", "window": { "start": { "local": "2001-08-29T12:23:17+01:00", "utc": "2001-08-29T11:23:17Z", "ms": 999084196609.6804 }, "end": { "local": "2001-08-29T13:11:17+01:00", "utc": "2001-08-29T12:11:17Z", "ms": 999087076609.6804 } }, "covered_min": 4, "window_min": 48, "qualifies": true }, { "local_date": "2001-08-30", "window": { "start": { "local": "2001-08-30T12:22:58+01:00", "utc": "2001-08-30T11:22:58Z", "ms": 999170578259.7275 }, "end": { "local": "2001-08-30T13:10:58+01:00", "utc": "2001-08-30T12:10:58Z", "ms": 999173458259.7275 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:07 on Wed 29 Aug to 15:22 on Thu 30 Aug.", "fact": "2001-08-29T12:06:50Z → 2001-08-30T14:22:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 29th, 12:23–13:11 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 4 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 266 s < 300 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Lagos, 2001: Thursday 30 August.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "2001-08-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-30", "confidence": "boundary" } ], "quote": "In Lagos, Vāmana Jayantī 2001 falls on Thursday 30 August. Dvādaśī runs from 13:07 on Wed 29 Aug to 15:22 on Thu 30 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 4 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 26 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-08-30", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3923, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-08-30T15:22:08+01:00", "utc": "2001-08-30T14:22:08Z", "ms": 999181328458.9171 }, "end": { "local": "2001-08-31T17:48:15+01:00", "utc": "2001-08-31T16:48:15Z", "ms": 999276495131.4845 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-30T15:22:08+01:00", "utc": "2001-08-30T14:22:08Z", "ms": 999181328458.9171 }, "end": { "local": "2001-08-31T17:48:15+01:00", "utc": "2001-08-31T16:48:15Z", "ms": 999276495131.4845 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-08-30", "window": { "start": { "local": "2001-08-30T18:54:07+01:00", "utc": "2001-08-30T17:54:07Z", "ms": 999194047466.4762 }, "end": { "local": "2001-08-30T20:28:12+01:00", "utc": "2001-08-30T19:28:12Z", "ms": 999199691888.8115 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "2001-08-31", "window": { "start": { "local": "2001-08-31T18:53:39+01:00", "utc": "2001-08-31T17:53:39Z", "ms": 999280418516.0018 }, "end": { "local": "2001-08-31T20:27:46+01:00", "utc": "2001-08-31T19:27:46Z", "ms": 999286065638.016 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:22 on Thu 30 Aug to 17:48 on Fri 31 Aug.", "fact": "2001-08-30T14:22:08Z → 2001-08-31T16:48:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:28 on the 30th, 18:54–20:28 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 30th and 0 of 94 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3923 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Thursday 30 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": "2001-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-08-30", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Thursday 30 August. Trayodaśī runs from 15:22 on Thu 30 Aug to 17:48 on Fri 31 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31307, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-08-31T17:48:15+01:00", "utc": "2001-08-31T16:48:15Z", "ms": 999276495131.4845 }, "end": { "local": "2001-09-01T20:17:15+01:00", "utc": "2001-09-01T19:17:15Z", "ms": 999371835104.8436 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2001-08-31T17:48:15+01:00", "utc": "2001-08-31T16:48:15Z", "ms": 999276495131.4845 }, "end": { "local": "2001-09-01T20:17:15+01:00", "utc": "2001-09-01T19:17:15Z", "ms": 999371835104.8436 } }, "kaala": "udaya-3", "days": [ { "local_date": "2001-08-31", "window": { "start": { "local": "2001-08-31T06:39:41+01:00", "utc": "2001-08-31T05:39:41Z", "ms": 999236380633.9913 }, "end": { "local": "2001-08-31T09:06:28+01:00", "utc": "2001-08-31T08:06:28Z", "ms": 999245188210.3934 } }, "covered_min": 0, "window_min": 147, "qualifies": false }, { "local_date": "2001-09-01", "window": { "start": { "local": "2001-09-01T06:39:32+01:00", "utc": "2001-09-01T05:39:32Z", "ms": 999322771931.108 }, "end": { "local": "2001-09-01T09:06:15+01:00", "utc": "2001-09-01T08:06:15Z", "ms": 999331575388.647 } }, "covered_min": 147, "window_min": 147, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:48 on Fri 31 Aug to 20:17 on Sat 1 Sep.", "fact": "2001-08-31T16:48:15Z → 2001-09-01T19:17:15Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:40–09:06 on the 31st, 06:40–09:06 on the 1st.", "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 147 minutes on the 31st and 147 of 147 on the 1st.", "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 31307 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Lagos, 2001: Saturday 1 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": "2001-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-01", "confidence": "determinate" } ], "quote": "In Lagos, Ananta Caturdaśī 2001 falls on Saturday 1 September. Caturdaśī runs from 17:48 on Fri 31 Aug to 20:17 on Sat 1 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-09-06", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29152, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-09-06T04:58:03+01:00", "utc": "2001-09-06T03:58:03Z", "ms": 999748682515.585 }, "end": { "local": "2001-09-07T06:29:15+01:00", "utc": "2001-09-07T05:29:15Z", "ms": 999840554803.0015 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-06T04:58:03+01:00", "utc": "2001-09-06T03:58:03Z", "ms": 999748682515.585 }, "end": { "local": "2001-09-07T06:29:15+01:00", "utc": "2001-09-07T05:29:15Z", "ms": 999840554803.0015 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-09-05", "window": { "start": { "local": "2001-09-05T20:52:10+01:00", "utc": "2001-09-05T19:52:10Z", "ms": 999719530194.969 }, "end": { "local": "2001-09-05T20:52:10+01:00", "utc": "2001-09-05T19:52:10Z", "ms": 999719530194.969 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-09-06", "window": { "start": { "local": "2001-09-06T21:31:59+01:00", "utc": "2001-09-06T20:31:59Z", "ms": 999808318533.7894 }, "end": { "local": "2001-09-06T21:31:59+01:00", "utc": "2001-09-06T20:31:59Z", "ms": 999808318533.7894 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:58 on Thu 6 Sep to 06:29 on Fri 7 Sep.", "fact": "2001-09-06T03:58:03Z → 2001-09-07T05:29:15Z" }, { "step": "kaala", "text": "Moonrise is at 20:52 on the 5th and 21:32 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29152 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Thursday 6 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": "2001-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-06", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Thursday 6 September. Caturthī runs from 04:58 on Thu 6 Sep to 06:29 on Fri 7 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33276, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-09-08T07:35:48+01:00", "utc": "2001-09-08T06:35:48Z", "ms": 999930948078.0646 }, "end": { "local": "2001-09-09T08:12:16+01:00", "utc": "2001-09-09T07:12:16Z", "ms": 1000019536066.7585 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-08T07:35:48+01:00", "utc": "2001-09-08T06:35:48Z", "ms": 999930948078.0646 }, "end": { "local": "2001-09-09T08:12:16+01:00", "utc": "2001-09-09T07:12:16Z", "ms": 1000019536066.7585 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-09-07", "window": { "start": { "local": "2001-09-07T22:13:29+01:00", "utc": "2001-09-07T21:13:29Z", "ms": 999897208976.6262 }, "end": { "local": "2001-09-07T22:13:29+01:00", "utc": "2001-09-07T21:13:29Z", "ms": 999897208976.6262 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-09-08", "window": { "start": { "local": "2001-09-08T22:57:40+01:00", "utc": "2001-09-08T21:57:40Z", "ms": 999986260229.9214 }, "end": { "local": "2001-09-08T22:57:40+01:00", "utc": "2001-09-08T21:57:40Z", "ms": 999986260229.9214 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 07:36 on Sat 8 Sep to 08:12 on Sun 9 Sep.", "fact": "2001-09-08T06:35:48Z → 2001-09-09T07:12:16Z" }, { "step": "kaala", "text": "Moonrise is at 22:13 on the 7th and 22:58 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33276 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Lagos, 2001: Saturday 8 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": "2001-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-08", "confidence": "determinate" } ], "quote": "In Lagos, Candra Ṣaṣṭhī 2001 falls on Saturday 8 September. Ṣaṣṭhī runs from 07:36 on Sat 8 Sep to 08:12 on Sun 9 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38105, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-09-10T08:13:28+01:00", "utc": "2001-09-10T07:13:28Z", "ms": 1000106008179.5667 }, "end": { "local": "2001-09-11T07:35:25+01:00", "utc": "2001-09-11T06:35:25Z", "ms": 1000190125011.6151 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-10T08:13:28+01:00", "utc": "2001-09-10T07:13:28Z", "ms": 1000106008179.5667 }, "end": { "local": "2001-09-11T07:35:25+01:00", "utc": "2001-09-11T06:35:25Z", "ms": 1000190125011.6151 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-09-10", "window": { "start": { "local": "2001-09-10T18:48:34+01:00", "utc": "2001-09-10T17:48:34Z", "ms": 1000144113616.7316 }, "end": { "local": "2001-09-10T20:23:08+01:00", "utc": "2001-09-10T19:23:08Z", "ms": 1000149788248.1617 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2001-09-11", "window": { "start": { "local": "2001-09-11T18:48:02+01:00", "utc": "2001-09-11T17:48:02Z", "ms": 1000230482080.8419 }, "end": { "local": "2001-09-11T20:22:40+01:00", "utc": "2001-09-11T19:22:40Z", "ms": 1000236159504.1412 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:13 on Mon 10 Sep to 07:35 on Tue 11 Sep.", "fact": "2001-09-10T07:13:28Z → 2001-09-11T06:35:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:49–20:23 on the 10th, 18:48–20:23 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 95 of 95 minutes on the 10th and 0 of 95 on the 11th.", "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 38105 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Lagos, 2001: Monday 10 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": "2001-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-10", "confidence": "determinate" } ], "quote": "In Lagos, Jitāṣṭamī (Jitiya) 2001 falls on Monday 10 September. Aṣṭamī runs from 08:13 on Mon 10 Sep to 07:35 on Tue 11 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25078, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-09-10T08:13:28+01:00", "utc": "2001-09-10T07:13:28Z", "ms": 1000106008179.5667 }, "end": { "local": "2001-09-11T07:35:25+01:00", "utc": "2001-09-11T06:35:25Z", "ms": 1000190125011.6151 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-10T08:13:28+01:00", "utc": "2001-09-10T07:13:28Z", "ms": 1000106008179.5667 }, "end": { "local": "2001-09-11T07:35:25+01:00", "utc": "2001-09-11T06:35:25Z", "ms": 1000190125011.6151 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-09-09", "window": { "start": { "local": "2001-09-09T23:45:27+01:00", "utc": "2001-09-09T22:45:27Z", "ms": 1000075526814.3177 }, "end": { "local": "2001-09-09T23:45:27+01:00", "utc": "2001-09-09T22:45:27Z", "ms": 1000075526814.3177 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-09-10", "window": { "start": { "local": "2001-09-11T00:37:27+01:00", "utc": "2001-09-10T23:37:27Z", "ms": 1000165047250.5732 }, "end": { "local": "2001-09-11T00:37:27+01:00", "utc": "2001-09-10T23:37:27Z", "ms": 1000165047250.5732 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:13 on Mon 10 Sep to 07:35 on Tue 11 Sep.", "fact": "2001-09-10T07:13:28Z → 2001-09-11T06:35:25Z" }, { "step": "kaala", "text": "Moonrise is at 23:45 on the 9th and 00:37 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 9th and is on the 10th.", "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 25078 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Lagos, 2001: Monday 10 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": "2001-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-10", "confidence": "determinate" } ], "quote": "In Lagos, Mahālakṣmī Vrata Samāpana 2001 falls on Monday 10 September. Aṣṭamī runs from 08:13 on Mon 10 Sep to 07:35 on Tue 11 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-09-13", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8470, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-09-13T04:16:22+01:00", "utc": "2001-09-13T03:16:22Z", "ms": 1000350982064.6951 }, "end": { "local": "2001-09-14T01:39:26+01:00", "utc": "2001-09-14T00:39:26Z", "ms": 1000427965533.2393 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-13T04:16:22+01:00", "utc": "2001-09-13T03:16:22Z", "ms": 1000350982064.6951 }, "end": { "local": "2001-09-14T01:39:26+01:00", "utc": "2001-09-14T00:39:26Z", "ms": 1000427965533.2393 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-09-13", "window": { "start": { "local": "2001-09-13T06:37:32+01:00", "utc": "2001-09-13T05:37:32Z", "ms": 1000359452097.2975 }, "end": { "local": "2001-09-13T06:37:32+01:00", "utc": "2001-09-13T05:37:32Z", "ms": 1000359452097.2975 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-09-14", "window": { "start": { "local": "2001-09-14T06:37:21+01:00", "utc": "2001-09-14T05:37:21Z", "ms": 1000445841393.7015 }, "end": { "local": "2001-09-14T06:37:21+01:00", "utc": "2001-09-14T05:37:21Z", "ms": 1000445841393.7015 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:16 on Thu 13 Sep to 01:39 on Fri 14 Sep.", "fact": "2001-09-13T03:16:22Z → 2001-09-14T00:39:26Z" }, { "step": "kaala", "text": "Sunrise is at 06:38 on the 13th and 06:37 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 8470 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Lagos, 2001: Thursday 13 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": "2001-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-13", "confidence": "determinate" } ], "quote": "In Lagos, Indirā Ekādaśī 2001 falls on Thursday 13 September. Ekādaśī runs from 04:16 on Thu 13 Sep to 01:39 on Fri 14 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-09-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-09-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 842, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-09-14T22:31:16+01:00", "utc": "2001-09-14T21:31:16Z", "ms": 1000503076421.2556 }, "end": { "local": "2001-09-15T18:59:57+01:00", "utc": "2001-09-15T17:59:57Z", "ms": 1000576797033.1449 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-14T22:31:16+01:00", "utc": "2001-09-14T21:31:16Z", "ms": 1000503076421.2556 }, "end": { "local": "2001-09-15T18:59:57+01:00", "utc": "2001-09-15T17:59:57Z", "ms": 1000576797033.1449 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-09-14", "window": { "start": { "local": "2001-09-14T18:46:27+01:00", "utc": "2001-09-14T17:46:27Z", "ms": 1000489586937.334 }, "end": { "local": "2001-09-14T20:21:13+01:00", "utc": "2001-09-14T19:21:13Z", "ms": 1000495272767.0028 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "2001-09-15", "window": { "start": { "local": "2001-09-15T18:45:55+01:00", "utc": "2001-09-15T17:45:55Z", "ms": 1000575955108.147 }, "end": { "local": "2001-09-15T20:20:44+01:00", "utc": "2001-09-15T19:20:44Z", "ms": 1000581643748.3685 } }, "covered_min": 14, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:31 on Fri 14 Sep to 19:00 on Sat 15 Sep.", "fact": "2001-09-14T21:31:16Z → 2001-09-15T17:59:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:46–20:21 on the 14th, 18:46–20:21 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 95 minutes on the 14th and 14 of 95 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 842 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Saturday 15 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": "2001-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-15", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Saturday 15 September. Trayodaśī runs from 22:31 on Fri 14 Sep to 19:00 on Sat 15 Sep and covers 14 of 95 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-09-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-09-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19050, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-09-15T18:59:57+01:00", "utc": "2001-09-15T17:59:57Z", "ms": 1000576797033.1449 }, "end": { "local": "2001-09-16T15:15:05+01:00", "utc": "2001-09-16T14:15:05Z", "ms": 1000649704796.3701 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-15T18:59:57+01:00", "utc": "2001-09-15T17:59:57Z", "ms": 1000576797033.1449 }, "end": { "local": "2001-09-16T15:15:05+01:00", "utc": "2001-09-16T14:15:05Z", "ms": 1000649704796.3701 } }, "kaala": "nishita", "days": [ { "local_date": "2001-09-15", "window": { "start": { "local": "2001-09-16T00:17:28+01:00", "utc": "2001-09-15T23:17:28Z", "ms": 1000595847508.9779 }, "end": { "local": "2001-09-16T01:05:28+01:00", "utc": "2001-09-16T00:05:28Z", "ms": 1000598727508.9779 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-09-16", "window": { "start": { "local": "2001-09-17T00:17:06+01:00", "utc": "2001-09-16T23:17:06Z", "ms": 1000682226204.0554 }, "end": { "local": "2001-09-17T01:05:06+01:00", "utc": "2001-09-17T00:05:06Z", "ms": 1000685106204.0554 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:00 on Sat 15 Sep to 15:15 on Sun 16 Sep.", "fact": "2001-09-15T17:59:57Z → 2001-09-16T14:15:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:17–01:05 on the 15th, 00:17–01:05 on the 16th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19050 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Saturday 15 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": "2001-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-15", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Saturday 15 September. Caturdaśī runs from 19:00 on Sat 15 Sep to 15:15 on Sun 16 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-09-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3878, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2001-09-16T15:15:05+01:00", "utc": "2001-09-16T14:15:05Z", "ms": 1000649704796.3701 }, "end": { "local": "2001-09-17T11:27:21+01:00", "utc": "2001-09-17T10:27:21Z", "ms": 1000722441279.4651 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-16T15:15:05+01:00", "utc": "2001-09-16T14:15:05Z", "ms": 1000649704796.3701 }, "end": { "local": "2001-09-17T11:27:21+01:00", "utc": "2001-09-17T10:27:21Z", "ms": 1000722441279.4651 } }, "kaala": "aparahna", "days": [ { "local_date": "2001-09-16", "window": { "start": { "local": "2001-09-16T13:54:02+01:00", "utc": "2001-09-16T12:54:02Z", "ms": 1000644841914.6355 }, "end": { "local": "2001-09-16T16:19:43+01:00", "utc": "2001-09-16T15:19:43Z", "ms": 1000653582582.9111 } }, "covered_min": 65, "window_min": 146, "qualifies": true }, { "local_date": "2001-09-17", "window": { "start": { "local": "2001-09-17T13:53:38+01:00", "utc": "2001-09-17T12:53:38Z", "ms": 1000731218492.6838 }, "end": { "local": "2001-09-17T16:19:15+01:00", "utc": "2001-09-17T15:19:15Z", "ms": 1000739954937.937 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 15:15 on Sun 16 Sep to 11:27 on Mon 17 Sep.", "fact": "2001-09-16T14:15:05Z → 2001-09-17T10:27:21Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:54–16:20 on the 16th, 13:54–16:19 on the 17th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 65 of 146 minutes on the 16th and 0 of 146 on the 17th.", "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 3878 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Lagos, 2001: Sunday 16 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": "2001-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-16", "confidence": "determinate" } ], "quote": "In Lagos, Mahālaya Amāvāsyā 2001 falls on Sunday 16 September. Amāvasyā runs from 15:15 on Sun 16 Sep to 11:27 on Mon 17 Sep and covers 65 of 146 minutes of aparāhṇa that afternoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-09-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37607, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-09-20T01:39:28+01:00", "utc": "2001-09-20T00:39:28Z", "ms": 1000946367646.4489 }, "end": { "local": "2001-09-20T23:30:33+01:00", "utc": "2001-09-20T22:30:33Z", "ms": 1001025033453.6759 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-20T01:39:28+01:00", "utc": "2001-09-20T00:39:28Z", "ms": 1000946367646.4489 }, "end": { "local": "2001-09-20T23:30:33+01:00", "utc": "2001-09-20T22:30:33Z", "ms": 1001025033453.6759 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-09-19", "window": { "start": { "local": "2001-09-19T12:16:08+01:00", "utc": "2001-09-19T11:16:08Z", "ms": 1000898167688.2383 }, "end": { "local": "2001-09-19T13:04:08+01:00", "utc": "2001-09-19T12:04:08Z", "ms": 1000901047688.2383 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-09-20", "window": { "start": { "local": "2001-09-20T12:15:46+01:00", "utc": "2001-09-20T11:15:46Z", "ms": 1000984546448.1245 }, "end": { "local": "2001-09-20T13:03:46+01:00", "utc": "2001-09-20T12:03:46Z", "ms": 1000987426448.1245 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:39 on Thu 20 Sep to 23:31 on Thu 20 Sep.", "fact": "2001-09-20T00:39:28Z → 2001-09-20T22:30:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:16–13:04 on the 19th, 12:16–13:04 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37607 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Thursday 20 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": "2001-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-20", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Thursday 20 September. Caturthī runs from 01:39 on Thu 20 Sep to 23:31 on Thu 20 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-09-27", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3043, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-09-27T03:14:33+01:00", "utc": "2001-09-27T02:14:33Z", "ms": 1001556873362.6777 }, "end": { "local": "2001-09-28T05:44:12+01:00", "utc": "2001-09-28T04:44:12Z", "ms": 1001652251709.8064 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-27T03:14:33+01:00", "utc": "2001-09-27T02:14:33Z", "ms": 1001556873362.6777 }, "end": { "local": "2001-09-28T05:44:12+01:00", "utc": "2001-09-28T04:44:12Z", "ms": 1001652251709.8064 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-09-27", "window": { "start": { "local": "2001-09-27T06:35:05+01:00", "utc": "2001-09-27T05:35:05Z", "ms": 1001568904687.0488 }, "end": { "local": "2001-09-27T06:35:05+01:00", "utc": "2001-09-27T05:35:05Z", "ms": 1001568904687.0488 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-09-28", "window": { "start": { "local": "2001-09-28T06:34:55+01:00", "utc": "2001-09-28T05:34:55Z", "ms": 1001655294929.1682 }, "end": { "local": "2001-09-28T06:34:55+01:00", "utc": "2001-09-28T05:34:55Z", "ms": 1001655294929.1682 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:15 on Thu 27 Sep to 05:44 on Fri 28 Sep.", "fact": "2001-09-27T02:14:33Z → 2001-09-28T04:44:12Z" }, { "step": "kaala", "text": "Sunrise is at 06:35 on the 27th and 06:35 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3043 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Lagos, 2001: Thursday 27 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": "2001-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-27", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Ekādaśī 2001 falls on Thursday 27 September. Ekādaśī runs from 03:15 on Thu 27 Sep to 05:44 on Fri 28 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-09-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-09-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28576, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-09-29T08:16:25+01:00", "utc": "2001-09-29T07:16:25Z", "ms": 1001747785118.4584 }, "end": { "local": "2001-09-30T10:41:49+01:00", "utc": "2001-09-30T09:41:49Z", "ms": 1001842908681.5472 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-09-29T08:16:25+01:00", "utc": "2001-09-29T07:16:25Z", "ms": 1001747785118.4584 }, "end": { "local": "2001-09-30T10:41:49+01:00", "utc": "2001-09-30T09:41:49Z", "ms": 1001842908681.5472 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-09-29", "window": { "start": { "local": "2001-09-29T18:38:35+01:00", "utc": "2001-09-29T17:38:35Z", "ms": 1001785114987.4257 }, "end": { "local": "2001-09-29T20:14:03+01:00", "utc": "2001-09-29T19:14:03Z", "ms": 1001790843128.8193 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2001-09-30", "window": { "start": { "local": "2001-09-30T18:38:05+01:00", "utc": "2001-09-30T17:38:05Z", "ms": 1001871484784.9917 }, "end": { "local": "2001-09-30T20:13:36+01:00", "utc": "2001-09-30T19:13:36Z", "ms": 1001877215742.6332 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:16 on Sat 29 Sep to 10:42 on Sun 30 Sep.", "fact": "2001-09-29T07:16:25Z → 2001-09-30T09:41:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:14 on the 29th, 18:38–20:14 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 29th and 0 of 96 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28576 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Saturday 29 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": "2001-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-09-29", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Saturday 29 September. Trayodaśī runs from 08:16 on Sat 29 Sep to 10:42 on Sun 30 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-09-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-10-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8493, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-10-05T18:34:39+01:00", "utc": "2001-10-05T17:34:39Z", "ms": 1002303278502.6199 }, "end": { "local": "2001-10-06T19:06:05+01:00", "utc": "2001-10-06T18:06:05Z", "ms": 1002391564984.481 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-05T18:34:39+01:00", "utc": "2001-10-05T17:34:39Z", "ms": 1002303278502.6199 }, "end": { "local": "2001-10-06T19:06:05+01:00", "utc": "2001-10-06T18:06:05Z", "ms": 1002391564984.481 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-10-05", "window": { "start": { "local": "2001-10-05T20:56:12+01:00", "utc": "2001-10-05T19:56:12Z", "ms": 1002311771726.8656 }, "end": { "local": "2001-10-05T20:56:12+01:00", "utc": "2001-10-05T19:56:12Z", "ms": 1002311771726.8656 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-10-06", "window": { "start": { "local": "2001-10-06T21:42:45+01:00", "utc": "2001-10-06T20:42:45Z", "ms": 1002400964558.6805 }, "end": { "local": "2001-10-06T21:42:45+01:00", "utc": "2001-10-06T20:42:45Z", "ms": 1002400964558.6805 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:35 on Fri 5 Oct to 19:06 on Sat 6 Oct.", "fact": "2001-10-05T17:34:39Z → 2001-10-06T18:06:05Z" }, { "step": "kaala", "text": "Moonrise is at 20:56 on the 5th and 21:43 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8493 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Friday 5 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": "2001-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-05", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Friday 5 October. Caturthī runs from 18:35 on Fri 5 Oct to 19:06 on Sat 6 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-10-13", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10022, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-10-12T12:10:57+01:00", "utc": "2001-10-12T11:10:57Z", "ms": 1002885057143.9819 }, "end": { "local": "2001-10-13T09:20:07+01:00", "utc": "2001-10-13T08:20:07Z", "ms": 1002961207167.651 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-12T12:10:57+01:00", "utc": "2001-10-12T11:10:57Z", "ms": 1002885057143.9819 }, "end": { "local": "2001-10-13T09:20:07+01:00", "utc": "2001-10-13T08:20:07Z", "ms": 1002961207167.651 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-10-12", "window": { "start": { "local": "2001-10-12T06:33:10+01:00", "utc": "2001-10-12T05:33:10Z", "ms": 1002864789533.3397 }, "end": { "local": "2001-10-12T06:33:10+01:00", "utc": "2001-10-12T05:33:10Z", "ms": 1002864789533.3397 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-10-13", "window": { "start": { "local": "2001-10-13T06:33:05+01:00", "utc": "2001-10-13T05:33:05Z", "ms": 1002951185055.7417 }, "end": { "local": "2001-10-13T06:33:05+01:00", "utc": "2001-10-13T05:33:05Z", "ms": 1002951185055.7417 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:11 on Fri 12 Oct to 09:20 on Sat 13 Oct.", "fact": "2001-10-12T11:10:57Z → 2001-10-13T08:20:07Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 12th and 06:33 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 12th and is on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10022 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Lagos, 2001: Saturday 13 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": "2001-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-13", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Ekādaśī 2001 falls on Saturday 13 October. Ekādaśī runs from 12:11 on Fri 12 Oct to 09:20 on Sat 13 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-10-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-10-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24248, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-10-14T06:11:02+01:00", "utc": "2001-10-14T05:11:02Z", "ms": 1003036261885.2343 }, "end": { "local": "2001-10-15T02:52:02+01:00", "utc": "2001-10-15T01:52:02Z", "ms": 1003110721621.831 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-14T06:11:02+01:00", "utc": "2001-10-14T05:11:02Z", "ms": 1003036261885.2343 }, "end": { "local": "2001-10-15T02:52:02+01:00", "utc": "2001-10-15T01:52:02Z", "ms": 1003110721621.831 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-10-13", "window": { "start": { "local": "2001-10-13T18:32:07+01:00", "utc": "2001-10-13T17:32:07Z", "ms": 1002994327426.669 }, "end": { "local": "2001-10-13T20:08:15+01:00", "utc": "2001-10-13T19:08:15Z", "ms": 1003000094580.2802 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2001-10-14", "window": { "start": { "local": "2001-10-14T18:31:43+01:00", "utc": "2001-10-14T17:31:43Z", "ms": 1003080703455.34 }, "end": { "local": "2001-10-14T20:07:53+01:00", "utc": "2001-10-14T19:07:53Z", "ms": 1003086473343.2893 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:11 on Sun 14 Oct to 02:52 on Mon 15 Oct.", "fact": "2001-10-14T05:11:02Z → 2001-10-15T01:52:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:08 on the 13th, 18:32–20:08 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 13th and 96 of 96 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 24248 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Sunday 14 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": "2001-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-14", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Sunday 14 October. Trayodaśī runs from 06:11 on Sun 14 Oct to 02:52 on Mon 15 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-10-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-14", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2127, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-10-15T02:52:02+01:00", "utc": "2001-10-15T01:52:02Z", "ms": 1003110721621.831 }, "end": { "local": "2001-10-15T23:32:41+01:00", "utc": "2001-10-15T22:32:41Z", "ms": 1003185160821.7758 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-15T02:52:02+01:00", "utc": "2001-10-15T01:52:02Z", "ms": 1003110721621.831 }, "end": { "local": "2001-10-15T23:32:41+01:00", "utc": "2001-10-15T22:32:41Z", "ms": 1003185160821.7758 } }, "kaala": "nishita", "days": [ { "local_date": "2001-10-14", "window": { "start": { "local": "2001-10-15T00:08:21+01:00", "utc": "2001-10-14T23:08:21Z", "ms": 1003100900535.1501 }, "end": { "local": "2001-10-15T00:56:21+01:00", "utc": "2001-10-14T23:56:21Z", "ms": 1003103780535.1501 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-15", "window": { "start": { "local": "2001-10-16T00:08:07+01:00", "utc": "2001-10-15T23:08:07Z", "ms": 1003187287380.6039 }, "end": { "local": "2001-10-16T00:56:07+01:00", "utc": "2001-10-15T23:56:07Z", "ms": 1003190167380.6039 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:52 on Mon 15 Oct to 23:33 on Mon 15 Oct.", "fact": "2001-10-15T01:52:02Z → 2001-10-15T22:32:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 14th, 00:08–00:56 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2127 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Sunday 14 October.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-10-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-14", "confidence": "boundary" } ], "quote": "In Lagos, Śivarātri 2001 falls on Sunday 14 October. Caturdaśī runs from 02:52 on Mon 15 Oct to 23:33 on Mon 15 Oct, and reaches niśītha on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16722, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-10-16T20:23:19+01:00", "utc": "2001-10-16T19:23:19Z", "ms": 1003260198527.7167 }, "end": { "local": "2001-10-17T17:34:26+01:00", "utc": "2001-10-17T16:34:26Z", "ms": 1003336466168.2878 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-16T20:23:19+01:00", "utc": "2001-10-16T19:23:19Z", "ms": 1003260198527.7167 }, "end": { "local": "2001-10-17T17:34:26+01:00", "utc": "2001-10-17T16:34:26Z", "ms": 1003336466168.2878 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-10-16", "window": { "start": { "local": "2001-10-16T12:07:56+01:00", "utc": "2001-10-16T11:07:56Z", "ms": 1003230476004.218 }, "end": { "local": "2001-10-16T12:55:56+01:00", "utc": "2001-10-16T11:55:56Z", "ms": 1003233356004.218 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-17", "window": { "start": { "local": "2001-10-17T12:07:44+01:00", "utc": "2001-10-17T11:07:44Z", "ms": 1003316863741.7578 }, "end": { "local": "2001-10-17T12:55:44+01:00", "utc": "2001-10-17T11:55:44Z", "ms": 1003319743741.7578 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:23 on Tue 16 Oct to 17:34 on Wed 17 Oct.", "fact": "2001-10-16T19:23:19Z → 2001-10-17T16:34:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 16th, 12:08–12:56 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16722 s" }, { "step": "ruling", "text": "Navarātrārambha, Lagos, 2001: Wednesday 17 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-17", "confidence": "determinate" } ], "quote": "In Lagos, Navarātrārambha (Navratri) 2001 falls on Wednesday 17 October. Pratipadā runs from 20:23 on Tue 16 Oct to 17:34 on Wed 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-10-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 614, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-10-19T13:37:25+01:00", "utc": "2001-10-19T12:37:25Z", "ms": 1003495044609.2661 }, "end": { "local": "2001-10-20T12:44:56+01:00", "utc": "2001-10-20T11:44:56Z", "ms": 1003578296423.7418 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-19T13:37:25+01:00", "utc": "2001-10-19T12:37:25Z", "ms": 1003495044609.2661 }, "end": { "local": "2001-10-20T12:44:56+01:00", "utc": "2001-10-20T11:44:56Z", "ms": 1003578296423.7418 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-10-19", "window": { "start": { "local": "2001-10-19T12:07:21+01:00", "utc": "2001-10-19T11:07:21Z", "ms": 1003489641017.2429 }, "end": { "local": "2001-10-19T12:55:21+01:00", "utc": "2001-10-19T11:55:21Z", "ms": 1003492521017.2429 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-20", "window": { "start": { "local": "2001-10-20T12:07:11+01:00", "utc": "2001-10-20T11:07:11Z", "ms": 1003576030580.582 }, "end": { "local": "2001-10-20T12:55:11+01:00", "utc": "2001-10-20T11:55:11Z", "ms": 1003578910580.582 } }, "covered_min": 38, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:37 on Fri 19 Oct to 12:45 on Sat 20 Oct.", "fact": "2001-10-19T12:37:25Z → 2001-10-20T11:44:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 19th, 12:07–12:55 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 38 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 614 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Saturday 20 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": "2001-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-20", "confidence": "boundary" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Saturday 20 October. Caturthī runs from 13:37 on Fri 19 Oct to 12:45 on Sat 20 Oct and covers 38 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22105, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-10-22T13:28:58+01:00", "utc": "2001-10-22T12:28:58Z", "ms": 1003753738134.7576 }, "end": { "local": "2001-10-23T14:59:31+01:00", "utc": "2001-10-23T13:59:31Z", "ms": 1003845571313.9819 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-22T13:28:58+01:00", "utc": "2001-10-22T12:28:58Z", "ms": 1003753738134.7576 }, "end": { "local": "2001-10-23T14:59:31+01:00", "utc": "2001-10-23T13:59:31Z", "ms": 1003845571313.9819 } }, "kaala": "udaya-1", "days": [ { "local_date": "2001-10-22", "window": { "start": { "local": "2001-10-22T06:32:49+01:00", "utc": "2001-10-22T05:32:49Z", "ms": 1003728768629.291 }, "end": { "local": "2001-10-22T07:20:33+01:00", "utc": "2001-10-22T06:20:33Z", "ms": 1003731633028.7551 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-23", "window": { "start": { "local": "2001-10-23T06:32:50+01:00", "utc": "2001-10-23T05:32:50Z", "ms": 1003815169650.9656 }, "end": { "local": "2001-10-23T07:20:33+01:00", "utc": "2001-10-23T06:20:33Z", "ms": 1003818032782.1234 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:29 on Mon 22 Oct to 15:00 on Tue 23 Oct.", "fact": "2001-10-22T12:28:58Z → 2001-10-23T13:59:31Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:33–07:21 on the 22nd, 06:33–07:21 on the 23rd.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "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 22105 s" }, { "step": "ruling", "text": "Durgā Saptamī, Lagos, 2001: Tuesday 23 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": "2001-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-23", "confidence": "determinate" } ], "quote": "In Lagos, Durgā Saptamī 2001 falls on Tuesday 23 October. Saptamī runs from 13:29 on Mon 22 Oct to 15:00 on Tue 23 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7488, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-10-23T14:59:31+01:00", "utc": "2001-10-23T13:59:31Z", "ms": 1003845571313.9819 }, "end": { "local": "2001-10-24T17:04:11+01:00", "utc": "2001-10-24T16:04:11Z", "ms": 1003939450763.6769 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-23T14:59:31+01:00", "utc": "2001-10-23T13:59:31Z", "ms": 1003845571313.9819 }, "end": { "local": "2001-10-24T17:04:11+01:00", "utc": "2001-10-24T16:04:11Z", "ms": 1003939450763.6769 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-10-23", "window": { "start": { "local": "2001-10-23T12:06:43+01:00", "utc": "2001-10-23T11:06:43Z", "ms": 1003835203134.6497 }, "end": { "local": "2001-10-23T12:54:43+01:00", "utc": "2001-10-23T11:54:43Z", "ms": 1003838083134.6497 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-24", "window": { "start": { "local": "2001-10-24T12:06:35+01:00", "utc": "2001-10-24T11:06:35Z", "ms": 1003921595321.1886 }, "end": { "local": "2001-10-24T12:54:35+01:00", "utc": "2001-10-24T11:54:35Z", "ms": 1003924475321.1886 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:00 on Tue 23 Oct to 17:04 on Wed 24 Oct.", "fact": "2001-10-23T13:59:31Z → 2001-10-24T16:04:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 23rd, 12:07–12:55 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7488 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Lagos, 2001: Wednesday 24 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": "2001-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-24", "confidence": "determinate" } ], "quote": "In Lagos, Mahāṣṭamī (Durga Ashtami) 2001 falls on Wednesday 24 October. Aṣṭamī runs from 15:00 on Tue 23 Oct to 17:04 on Wed 24 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14975, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2001-10-24T17:04:11+01:00", "utc": "2001-10-24T16:04:11Z", "ms": 1003939450763.6769 }, "end": { "local": "2001-10-25T19:29:56+01:00", "utc": "2001-10-25T18:29:56Z", "ms": 1004034595753.1001 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-24T17:04:11+01:00", "utc": "2001-10-24T16:04:11Z", "ms": 1003939450763.6769 }, "end": { "local": "2001-10-25T19:29:56+01:00", "utc": "2001-10-25T18:29:56Z", "ms": 1004034595753.1001 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-10-24", "window": { "start": { "local": "2001-10-24T12:06:35+01:00", "utc": "2001-10-24T11:06:35Z", "ms": 1003921595321.1886 }, "end": { "local": "2001-10-24T12:54:35+01:00", "utc": "2001-10-24T11:54:35Z", "ms": 1003924475321.1886 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-25", "window": { "start": { "local": "2001-10-25T12:06:28+01:00", "utc": "2001-10-25T11:06:28Z", "ms": 1004007988199.377 }, "end": { "local": "2001-10-25T12:54:28+01:00", "utc": "2001-10-25T11:54:28Z", "ms": 1004010868199.377 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 17:04 on Wed 24 Oct to 19:30 on Thu 25 Oct.", "fact": "2001-10-24T16:04:11Z → 2001-10-25T18:29:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 24th, 12:06–12:54 on the 25th.", "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 24th and 48 of 48 on the 25th.", "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 14975 s" }, { "step": "ruling", "text": "Mahānavamī, Lagos, 2001: Thursday 25 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": "2001-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-25", "confidence": "determinate" } ], "quote": "In Lagos, Mahānavamī 2001 falls on Thursday 25 October. Navamī runs from 17:04 on Wed 24 Oct to 19:30 on Thu 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23312, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2001-10-25T19:29:56+01:00", "utc": "2001-10-25T18:29:56Z", "ms": 1004034595753.1001 }, "end": { "local": "2001-10-26T22:02:37+01:00", "utc": "2001-10-26T21:02:37Z", "ms": 1004130156807.3575 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-25T19:29:56+01:00", "utc": "2001-10-25T18:29:56Z", "ms": 1004034595753.1001 }, "end": { "local": "2001-10-26T22:02:37+01:00", "utc": "2001-10-26T21:02:37Z", "ms": 1004130156807.3575 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-10-25", "window": { "start": { "local": "2001-10-25T12:06:28+01:00", "utc": "2001-10-25T11:06:28Z", "ms": 1004007988199.377 }, "end": { "local": "2001-10-25T12:54:28+01:00", "utc": "2001-10-25T11:54:28Z", "ms": 1004010868199.377 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-10-26", "window": { "start": { "local": "2001-10-26T12:06:22+01:00", "utc": "2001-10-26T11:06:22Z", "ms": 1004094381783.6819 }, "end": { "local": "2001-10-26T12:54:22+01:00", "utc": "2001-10-26T11:54:22Z", "ms": 1004097261783.6819 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 19:30 on Thu 25 Oct to 22:03 on Fri 26 Oct.", "fact": "2001-10-25T18:29:56Z → 2001-10-26T21:02:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 25th, 12:06–12:54 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23312 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Lagos, 2001: Friday 26 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": "2001-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-26", "confidence": "determinate" } ], "quote": "In Lagos, Vijayā Daśamī (Dussehra) 2001 falls on Friday 26 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 19:30 on Thu 25 Oct to 22:03 on Fri 26 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-10-27", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21834, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-10-26T22:02:37+01:00", "utc": "2001-10-26T21:02:37Z", "ms": 1004130156807.3575 }, "end": { "local": "2001-10-28T00:29:10+01:00", "utc": "2001-10-27T23:29:10Z", "ms": 1004225349879.9978 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-26T22:02:37+01:00", "utc": "2001-10-26T21:02:37Z", "ms": 1004130156807.3575 }, "end": { "local": "2001-10-28T00:29:10+01:00", "utc": "2001-10-27T23:29:10Z", "ms": 1004225349879.9978 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-10-27", "window": { "start": { "local": "2001-10-27T06:33:00+01:00", "utc": "2001-10-27T05:33:00Z", "ms": 1004160779953.4116 }, "end": { "local": "2001-10-27T06:33:00+01:00", "utc": "2001-10-27T05:33:00Z", "ms": 1004160779953.4116 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-10-28", "window": { "start": { "local": "2001-10-28T06:33:04+01:00", "utc": "2001-10-28T05:33:04Z", "ms": 1004247184141.1136 }, "end": { "local": "2001-10-28T06:33:04+01:00", "utc": "2001-10-28T05:33:04Z", "ms": 1004247184141.1136 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:03 on Fri 26 Oct to 00:29 on Sun 28 Oct.", "fact": "2001-10-26T21:02:37Z → 2001-10-27T23:29:10Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 27th and 06:33 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21834 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Lagos, 2001: Saturday 27 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": "2001-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-27", "confidence": "determinate" } ], "quote": "In Lagos, Pāśāṅkuśā Ekādaśī 2001 falls on Saturday 27 October. Ekādaśī runs from 22:03 on Fri 26 Oct to 00:29 on Sun 28 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-10-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23714, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-10-29T02:39:19+01:00", "utc": "2001-10-29T01:39:19Z", "ms": 1004319559209.7603 }, "end": { "local": "2001-10-30T04:26:24+01:00", "utc": "2001-10-30T03:26:24Z", "ms": 1004412383969.3647 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2001-10-29T02:39:19+01:00", "utc": "2001-10-29T01:39:19Z", "ms": 1004319559209.7603 }, "end": { "local": "2001-10-30T04:26:24+01:00", "utc": "2001-10-30T03:26:24Z", "ms": 1004412383969.3647 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-10-28", "window": { "start": { "local": "2001-10-28T18:27:18+01:00", "utc": "2001-10-28T17:27:18Z", "ms": 1004290038114.8987 }, "end": { "local": "2001-10-28T20:04:05+01:00", "utc": "2001-10-28T19:04:05Z", "ms": 1004295844899.1028 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2001-10-29", "window": { "start": { "local": "2001-10-29T18:27:05+01:00", "utc": "2001-10-29T17:27:05Z", "ms": 1004376424836.2476 }, "end": { "local": "2001-10-29T20:03:54+01:00", "utc": "2001-10-29T19:03:54Z", "ms": 1004382234128.8011 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:39 on Mon 29 Oct to 04:26 on Tue 30 Oct.", "fact": "2001-10-29T01:39:19Z → 2001-10-30T03:26:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–20:04 on the 28th, 18:27–20:04 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 97 minutes on the 28th and 97 of 97 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 23714 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Monday 29 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": "2001-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-10-29", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Monday 29 October. Trayodaśī runs from 02:39 on Mon 29 Oct to 04:26 on Tue 30 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31962, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-11-04T06:54:49+01:00", "utc": "2001-11-04T05:54:49Z", "ms": 1004853289132.597 }, "end": { "local": "2001-11-05T06:15:33+01:00", "utc": "2001-11-05T05:15:33Z", "ms": 1004937332603.8236 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-04T06:54:49+01:00", "utc": "2001-11-04T05:54:49Z", "ms": 1004853289132.597 }, "end": { "local": "2001-11-05T06:15:33+01:00", "utc": "2001-11-05T05:15:33Z", "ms": 1004937332603.8236 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-11-03", "window": { "start": { "local": "2001-11-03T20:29:20+01:00", "utc": "2001-11-03T19:29:20Z", "ms": 1004815760155.0571 }, "end": { "local": "2001-11-03T20:29:20+01:00", "utc": "2001-11-03T19:29:20Z", "ms": 1004815760155.0571 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-11-04", "window": { "start": { "local": "2001-11-04T21:22:50+01:00", "utc": "2001-11-04T20:22:50Z", "ms": 1004905370173.7966 }, "end": { "local": "2001-11-04T21:22:50+01:00", "utc": "2001-11-04T20:22:50Z", "ms": 1004905370173.7966 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:55 on Sun 4 Nov to 06:16 on Mon 5 Nov.", "fact": "2001-11-04T05:54:49Z → 2001-11-05T05:15:33Z" }, { "step": "kaala", "text": "Moonrise is at 20:29 on the 3rd and 21:23 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31962 s" }, { "step": "ruling", "text": "Karaka Caturthī, Lagos, 2001: Sunday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-04", "confidence": "determinate" } ], "quote": "In Lagos, Karaka Caturthī (Karwa Chauth) 2001 falls on Sunday 4 November. Caturthī runs from 06:55 on Sun 4 Nov to 06:16 on Mon 5 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-11-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31962, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-11-04T06:54:49+01:00", "utc": "2001-11-04T05:54:49Z", "ms": 1004853289132.597 }, "end": { "local": "2001-11-05T06:15:33+01:00", "utc": "2001-11-05T05:15:33Z", "ms": 1004937332603.8236 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-04T06:54:49+01:00", "utc": "2001-11-04T05:54:49Z", "ms": 1004853289132.597 }, "end": { "local": "2001-11-05T06:15:33+01:00", "utc": "2001-11-05T05:15:33Z", "ms": 1004937332603.8236 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-11-03", "window": { "start": { "local": "2001-11-03T20:29:20+01:00", "utc": "2001-11-03T19:29:20Z", "ms": 1004815760155.0571 }, "end": { "local": "2001-11-03T20:29:20+01:00", "utc": "2001-11-03T19:29:20Z", "ms": 1004815760155.0571 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-11-04", "window": { "start": { "local": "2001-11-04T21:22:50+01:00", "utc": "2001-11-04T20:22:50Z", "ms": 1004905370173.7966 }, "end": { "local": "2001-11-04T21:22:50+01:00", "utc": "2001-11-04T20:22:50Z", "ms": 1004905370173.7966 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:55 on Sun 4 Nov to 06:16 on Mon 5 Nov.", "fact": "2001-11-04T05:54:49Z → 2001-11-05T05:15:33Z" }, { "step": "kaala", "text": "Moonrise is at 20:29 on the 3rd and 21:23 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31962 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Sunday 4 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": "2001-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-04", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Sunday 4 November. Caturthī runs from 06:55 on Sun 4 Nov to 06:16 on Mon 5 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-07", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3271, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-11-08T02:17:41+01:00", "utc": "2001-11-08T01:17:41Z", "ms": 1005182261404.2708 }, "end": { "local": "2001-11-09T00:20:25+01:00", "utc": "2001-11-08T23:20:25Z", "ms": 1005261625185.8329 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-08T02:17:41+01:00", "utc": "2001-11-08T01:17:41Z", "ms": 1005182261404.2708 }, "end": { "local": "2001-11-09T00:20:25+01:00", "utc": "2001-11-08T23:20:25Z", "ms": 1005261625185.8329 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-11-07", "window": { "start": { "local": "2001-11-08T00:16:59+01:00", "utc": "2001-11-07T23:16:59Z", "ms": 1005175019245.7308 }, "end": { "local": "2001-11-08T00:16:59+01:00", "utc": "2001-11-07T23:16:59Z", "ms": 1005175019245.7308 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-11-08", "window": { "start": { "local": "2001-11-09T01:14:56+01:00", "utc": "2001-11-09T00:14:56Z", "ms": 1005264895938.6693 }, "end": { "local": "2001-11-09T01:14:56+01:00", "utc": "2001-11-09T00:14:56Z", "ms": 1005264895938.6693 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:18 on Thu 8 Nov to 00:20 on Fri 9 Nov.", "fact": "2001-11-08T01:17:41Z → 2001-11-08T23:20:25Z" }, { "step": "kaala", "text": "Moonrise is at 00:17 on the 7th and 01:15 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 3271 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Lagos, 2001: Wednesday 7 November.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2001-11-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-07", "confidence": "boundary" } ], "quote": "In Lagos, Ahoyī Aṣṭamī 2001 falls on Wednesday 7 November. Aṣṭamī runs from 02:18 on Thu 8 Nov to 00:20 on Fri 9 Nov, and is current at moonrise on neither day.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-11-11", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37799, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-11-10T19:40:09+01:00", "utc": "2001-11-10T18:40:09Z", "ms": 1005417608728.2839 }, "end": { "local": "2001-11-11T17:05:16+01:00", "utc": "2001-11-11T16:05:16Z", "ms": 1005494716265.6981 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-10T19:40:09+01:00", "utc": "2001-11-10T18:40:09Z", "ms": 1005417608728.2839 }, "end": { "local": "2001-11-11T17:05:16+01:00", "utc": "2001-11-11T16:05:16Z", "ms": 1005494716265.6981 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-11-10", "window": { "start": { "local": "2001-11-10T06:35:03+01:00", "utc": "2001-11-10T05:35:03Z", "ms": 1005370502840.6536 }, "end": { "local": "2001-11-10T06:35:03+01:00", "utc": "2001-11-10T05:35:03Z", "ms": 1005370502840.6536 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-11-11", "window": { "start": { "local": "2001-11-11T06:35:17+01:00", "utc": "2001-11-11T05:35:17Z", "ms": 1005456917146.7002 }, "end": { "local": "2001-11-11T06:35:17+01:00", "utc": "2001-11-11T05:35:17Z", "ms": 1005456917146.7002 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:40 on Sat 10 Nov to 17:05 on Sun 11 Nov.", "fact": "2001-11-10T18:40:09Z → 2001-11-11T16:05:16Z" }, { "step": "kaala", "text": "Sunrise is at 06:35 on the 10th and 06:35 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37799 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Lagos, 2001: Sunday 11 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": "2001-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-11", "confidence": "determinate" } ], "quote": "In Lagos, Ramā Ekādaśī 2001 falls on Sunday 11 November. Ekādaśī runs from 19:40 on Sat 10 Nov to 17:05 on Sun 11 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-11-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4818, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-11-11T17:05:16+01:00", "utc": "2001-11-11T16:05:16Z", "ms": 1005494716265.6981 }, "end": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-11T17:05:16+01:00", "utc": "2001-11-11T16:05:16Z", "ms": 1005494716265.6981 }, "end": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-11", "window": { "start": { "local": "2001-11-11T18:25:35+01:00", "utc": "2001-11-11T17:25:35Z", "ms": 1005499534658.5881 }, "end": { "local": "2001-11-11T20:02:54+01:00", "utc": "2001-11-11T19:02:54Z", "ms": 1005505374330.3119 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2001-11-12", "window": { "start": { "local": "2001-11-12T18:25:34+01:00", "utc": "2001-11-12T17:25:34Z", "ms": 1005585934466.6371 }, "end": { "local": "2001-11-12T20:02:56+01:00", "utc": "2001-11-12T19:02:56Z", "ms": 1005591776268.8481 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:05 on Sun 11 Nov to 14:28 on Mon 12 Nov.", "fact": "2001-11-11T16:05:16Z → 2001-11-12T13:28:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:03 on the 11th, 18:26–20:03 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 11th and 0 of 97 on the 12th.", "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 4818 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Lagos, 2001: Sunday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-11", "confidence": "determinate" } ], "quote": "In Lagos, Govatsa Dvādaśī (Vasu Baras) 2001 falls on Sunday 11 November. Dvādaśī runs from 17:05 on Sun 11 Nov to 14:28 on Mon 12 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14238, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 }, "end": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 }, "end": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-12", "window": { "start": { "local": "2001-11-12T18:25:34+01:00", "utc": "2001-11-12T17:25:34Z", "ms": 1005585934466.6371 }, "end": { "local": "2001-11-12T20:02:56+01:00", "utc": "2001-11-12T19:02:56Z", "ms": 1005591776268.8481 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2001-11-13", "window": { "start": { "local": "2001-11-13T18:25:35+01:00", "utc": "2001-11-13T17:25:35Z", "ms": 1005672335265.8973 }, "end": { "local": "2001-11-13T20:02:59+01:00", "utc": "2001-11-13T19:02:59Z", "ms": 1005678179163.5033 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:28 on Mon 12 Nov to 11:56 on Tue 13 Nov.", "fact": "2001-11-12T13:28:16Z → 2001-11-13T10:56:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:03 on the 12th, 18:26–20:03 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 12th and 0 of 97 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14238 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Lagos, 2001: Monday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-12", "confidence": "determinate" } ], "quote": "In Lagos, Yama Dīpadāna 2001 falls on Monday 12 November. Trayodaśī runs from 14:28 on Mon 12 Nov to 11:56 on Tue 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-11-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14238, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 }, "end": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-12T14:28:16+01:00", "utc": "2001-11-12T13:28:16Z", "ms": 1005571696470.227 }, "end": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-12", "window": { "start": { "local": "2001-11-12T18:25:34+01:00", "utc": "2001-11-12T17:25:34Z", "ms": 1005585934466.6371 }, "end": { "local": "2001-11-12T20:02:56+01:00", "utc": "2001-11-12T19:02:56Z", "ms": 1005591776268.8481 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2001-11-13", "window": { "start": { "local": "2001-11-13T18:25:35+01:00", "utc": "2001-11-13T17:25:35Z", "ms": 1005672335265.8973 }, "end": { "local": "2001-11-13T20:02:59+01:00", "utc": "2001-11-13T19:02:59Z", "ms": 1005678179163.5033 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:28 on Mon 12 Nov to 11:56 on Tue 13 Nov.", "fact": "2001-11-12T13:28:16Z → 2001-11-13T10:56:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:03 on the 12th, 18:26–20:03 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 12th and 0 of 97 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 14238 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Monday 12 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": "2001-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-12", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Monday 12 November. Trayodaśī runs from 14:28 on Mon 12 Nov to 11:56 on Tue 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-11-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-11-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31361, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "end": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "end": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 } }, "kaala": "nishita", "days": [ { "local_date": "2001-11-12", "window": { "start": { "local": "2001-11-13T00:06:41+01:00", "utc": "2001-11-12T23:06:41Z", "ms": 1005606401224.9287 }, "end": { "local": "2001-11-13T00:54:41+01:00", "utc": "2001-11-12T23:54:41Z", "ms": 1005609281224.9287 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-11-13", "window": { "start": { "local": "2001-11-14T00:06:50+01:00", "utc": "2001-11-13T23:06:50Z", "ms": 1005692809881.9197 }, "end": { "local": "2001-11-14T00:54:50+01:00", "utc": "2001-11-13T23:54:50Z", "ms": 1005695689881.9197 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:56 on Tue 13 Nov to 09:38 on Wed 14 Nov.", "fact": "2001-11-13T10:56:22Z → 2001-11-14T08:37:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 12th, 00:07–00:55 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31361 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Tuesday 13 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": "2001-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-13", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Tuesday 13 November. Caturdaśī runs from 11:56 on Tue 13 Nov to 09:38 on Wed 14 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-11-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10887, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "end": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-13T11:56:22+01:00", "utc": "2001-11-13T10:56:22Z", "ms": 1005648982174.7081 }, "end": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 } }, "kaala": "arunodaya", "days": [ { "local_date": "2001-11-13", "window": { "start": { "local": "2001-11-13T04:58:26+01:00", "utc": "2001-11-13T03:58:26Z", "ms": 1005623906181.0093 }, "end": { "local": "2001-11-13T06:35:48+01:00", "utc": "2001-11-13T05:35:48Z", "ms": 1005629747983.2203 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2001-11-14", "window": { "start": { "local": "2001-11-14T04:58:41+01:00", "utc": "2001-11-14T03:58:41Z", "ms": 1005710320600.3362 }, "end": { "local": "2001-11-14T06:36:04+01:00", "utc": "2001-11-14T05:36:04Z", "ms": 1005716164497.9421 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:56 on Tue 13 Nov to 09:38 on Wed 14 Nov.", "fact": "2001-11-13T10:56:22Z → 2001-11-14T08:37:31Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:58–06:36 on the 13th, 04:59–06:36 on the 14th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 97 minutes on the 13th and 97 of 97 on the 14th.", "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 10887 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Lagos, 2001: Wednesday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-14", "confidence": "determinate" } ], "quote": "In Lagos, Naraka Caturdaśī (Choti Diwali) 2001 falls on Wednesday 14 November. Caturdaśī runs from 11:56 on Tue 13 Nov to 09:38 on Wed 14 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31686, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "end": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "end": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-14", "window": { "start": { "local": "2001-11-14T18:25:37+01:00", "utc": "2001-11-14T17:25:37Z", "ms": 1005758737054.5469 }, "end": { "local": "2001-11-14T20:03:03+01:00", "utc": "2001-11-14T19:03:03Z", "ms": 1005764583011.2869 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2001-11-15", "window": { "start": { "local": "2001-11-15T18:25:40+01:00", "utc": "2001-11-15T17:25:40Z", "ms": 1005845139829.3259 }, "end": { "local": "2001-11-15T20:03:08+01:00", "utc": "2001-11-15T19:03:08Z", "ms": 1005850987807.7839 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:38 on Wed 14 Nov to 07:40 on Thu 15 Nov.", "fact": "2001-11-14T08:37:31Z → 2001-11-15T06:39:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:03 on the 14th, 18:26–20:03 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 97 of 97 minutes on the 14th and 0 of 97 on the 15th.", "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 31686 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Lagos, 2001: Wednesday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-14", "confidence": "determinate" } ], "quote": "In Lagos, Lakṣmī Pūjā (Diwali) 2001 falls on Wednesday 14 November. Amāvasyā runs from 09:38 on Wed 14 Nov to 07:40 on Thu 15 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24300, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "end": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-14T09:37:31+01:00", "utc": "2001-11-14T08:37:31Z", "ms": 1005727051224.652 }, "end": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 } }, "kaala": "nishita", "days": [ { "local_date": "2001-11-13", "window": { "start": { "local": "2001-11-14T00:06:50+01:00", "utc": "2001-11-13T23:06:50Z", "ms": 1005692809881.9197 }, "end": { "local": "2001-11-14T00:54:50+01:00", "utc": "2001-11-13T23:54:50Z", "ms": 1005695689881.9197 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-11-14", "window": { "start": { "local": "2001-11-15T00:06:59+01:00", "utc": "2001-11-14T23:06:59Z", "ms": 1005779219392.3218 }, "end": { "local": "2001-11-15T00:54:59+01:00", "utc": "2001-11-14T23:54:59Z", "ms": 1005782099392.3218 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:38 on Wed 14 Nov to 07:40 on Thu 15 Nov.", "fact": "2001-11-14T08:37:31Z → 2001-11-15T06:39:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 13th, 00:07–00:55 on the 14th.", "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 13th and 48 of 48 on the 14th.", "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 24300 s" }, { "step": "ruling", "text": "Kālī Pūjā, Lagos, 2001: Wednesday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-14", "confidence": "determinate" } ], "quote": "In Lagos, Kālī Pūjā 2001 falls on Wednesday 14 November. Amāvasyā runs from 09:38 on Wed 14 Nov to 07:40 on Thu 15 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16022, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-15", "window": { "start": { "local": "2001-11-15T12:07:01+01:00", "utc": "2001-11-15T11:07:01Z", "ms": 1005822420779.7112 }, "end": { "local": "2001-11-15T12:55:01+01:00", "utc": "2001-11-15T11:55:01Z", "ms": 1005825300779.7112 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-16", "window": { "start": { "local": "2001-11-16T12:07:12+01:00", "utc": "2001-11-16T11:07:12Z", "ms": 1005908831626.751 }, "end": { "local": "2001-11-16T12:55:12+01:00", "utc": "2001-11-16T11:55:12Z", "ms": 1005911711626.751 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov.", "fact": "2001-11-15T06:39:59Z → 2001-11-16T05:11:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 15th, 12:07–12:55 on the 16th.", "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 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16022 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Lagos, 2001: Thursday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-15", "confidence": "determinate" } ], "quote": "In Lagos, Govardhana Pūjā 2001 falls on Thursday 15 November. Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36516, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-14", "window": { "start": { "local": "2001-11-14T18:25:37+01:00", "utc": "2001-11-14T17:25:37Z", "ms": 1005758737054.5469 }, "end": { "local": "2001-11-14T20:03:03+01:00", "utc": "2001-11-14T19:03:03Z", "ms": 1005764583011.2869 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2001-11-15", "window": { "start": { "local": "2001-11-15T18:25:40+01:00", "utc": "2001-11-15T17:25:40Z", "ms": 1005845139829.3259 }, "end": { "local": "2001-11-15T20:03:08+01:00", "utc": "2001-11-15T19:03:08Z", "ms": 1005850987807.7839 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov.", "fact": "2001-11-15T06:39:59Z → 2001-11-16T05:11:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:03 on the 14th, 18:26–20:03 on the 15th.", "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 97 minutes on the 14th and 97 of 97 on the 15th.", "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 36516 s" }, { "step": "ruling", "text": "Bali Pūjā, Lagos, 2001: Thursday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-15", "confidence": "determinate" } ], "quote": "In Lagos, Bali Pūjā 2001 falls on Thursday 15 November. Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1496, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-15T07:39:59+01:00", "utc": "2001-11-15T06:39:59Z", "ms": 1005806398995.0366 }, "end": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 } }, "kaala": "purvahna", "days": [ { "local_date": "2001-11-15", "window": { "start": { "local": "2001-11-15T06:36:22+01:00", "utc": "2001-11-15T05:36:22Z", "ms": 1005802581730.0966 }, "end": { "local": "2001-11-15T10:32:48+01:00", "utc": "2001-11-15T09:32:48Z", "ms": 1005816767763.173 } }, "covered_min": 173, "window_min": 236, "qualifies": true }, { "local_date": "2001-11-16", "window": { "start": { "local": "2001-11-16T06:36:40+01:00", "utc": "2001-11-16T05:36:40Z", "ms": 1005888999667.761 }, "end": { "local": "2001-11-16T10:33:01+01:00", "utc": "2001-11-16T09:33:01Z", "ms": 1005903180973.7543 } }, "covered_min": 0, "window_min": 236, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov.", "fact": "2001-11-15T06:39:59Z → 2001-11-16T05:11:44Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:36–10:33 on the 15th, 06:37–10:33 on the 16th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 173 of 236 minutes on the 15th and 0 of 236 on the 16th.", "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 1496 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Lagos, 2001: Thursday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-15", "confidence": "determinate" } ], "quote": "In Lagos, Dyūta Pratipad 2001 falls on Thursday 15 November. Pratipadā runs from 07:40 on Thu 15 Nov to 06:12 on Fri 16 Nov and covers 173 of 236 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21328, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 }, "end": { "local": "2001-11-17T05:19:44+01:00", "utc": "2001-11-17T04:19:44Z", "ms": 1005970784009.8746 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-16T06:11:44+01:00", "utc": "2001-11-16T05:11:44Z", "ms": 1005887503845.0381 }, "end": { "local": "2001-11-17T05:19:44+01:00", "utc": "2001-11-17T04:19:44Z", "ms": 1005970784009.8746 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-16", "window": { "start": { "local": "2001-11-16T12:07:12+01:00", "utc": "2001-11-16T11:07:12Z", "ms": 1005908831626.751 }, "end": { "local": "2001-11-16T12:55:12+01:00", "utc": "2001-11-16T11:55:12Z", "ms": 1005911711626.751 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-17", "window": { "start": { "local": "2001-11-17T12:07:23+01:00", "utc": "2001-11-17T11:07:23Z", "ms": 1005995243308.6368 }, "end": { "local": "2001-11-17T12:55:23+01:00", "utc": "2001-11-17T11:55:23Z", "ms": 1005998123308.6368 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 06:12 on Fri 16 Nov to 05:20 on Sat 17 Nov.", "fact": "2001-11-16T05:11:44Z → 2001-11-17T04:19:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 16th, 12:07–12:55 on the 17th.", "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 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21328 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Lagos, 2001: Friday 16 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-16", "confidence": "determinate" } ], "quote": "In Lagos, Yama Dvitīyā (Bhai Dooj) 2001 falls on Friday 16 November. Dvitīyā runs from 06:12 on Fri 16 Nov to 05:20 on Sat 17 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23146, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-11-18T05:09:05+01:00", "utc": "2001-11-18T04:09:05Z", "ms": 1006056545375.9696 }, "end": { "local": "2001-11-19T05:42:03+01:00", "utc": "2001-11-19T04:42:03Z", "ms": 1006144923196.3724 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-18T05:09:05+01:00", "utc": "2001-11-18T04:09:05Z", "ms": 1006056545375.9696 }, "end": { "local": "2001-11-19T05:42:03+01:00", "utc": "2001-11-19T04:42:03Z", "ms": 1006144923196.3724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-18", "window": { "start": { "local": "2001-11-18T12:07:36+01:00", "utc": "2001-11-18T11:07:36Z", "ms": 1006081655815.8401 }, "end": { "local": "2001-11-18T12:55:36+01:00", "utc": "2001-11-18T11:55:36Z", "ms": 1006084535815.8401 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-19", "window": { "start": { "local": "2001-11-19T12:07:49+01:00", "utc": "2001-11-19T11:07:49Z", "ms": 1006168069138.573 }, "end": { "local": "2001-11-19T12:55:49+01:00", "utc": "2001-11-19T11:55:49Z", "ms": 1006170949138.573 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:09 on Sun 18 Nov to 05:42 on Mon 19 Nov.", "fact": "2001-11-18T04:09:05Z → 2001-11-19T04:42:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 18th, 12:08–12:56 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23146 s" }, { "step": "ruling", "text": "Nāga Caturthī, Lagos, 2001: Sunday 18 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-18", "confidence": "determinate" } ], "quote": "In Lagos, Nāga Caturthī 2001 falls on Sunday 18 November. Caturthī runs from 05:09 on Sun 18 Nov to 05:42 on Mon 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-11-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23146, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-11-18T05:09:05+01:00", "utc": "2001-11-18T04:09:05Z", "ms": 1006056545375.9696 }, "end": { "local": "2001-11-19T05:42:03+01:00", "utc": "2001-11-19T04:42:03Z", "ms": 1006144923196.3724 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-18T05:09:05+01:00", "utc": "2001-11-18T04:09:05Z", "ms": 1006056545375.9696 }, "end": { "local": "2001-11-19T05:42:03+01:00", "utc": "2001-11-19T04:42:03Z", "ms": 1006144923196.3724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-18", "window": { "start": { "local": "2001-11-18T12:07:36+01:00", "utc": "2001-11-18T11:07:36Z", "ms": 1006081655815.8401 }, "end": { "local": "2001-11-18T12:55:36+01:00", "utc": "2001-11-18T11:55:36Z", "ms": 1006084535815.8401 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-19", "window": { "start": { "local": "2001-11-19T12:07:49+01:00", "utc": "2001-11-19T11:07:49Z", "ms": 1006168069138.573 }, "end": { "local": "2001-11-19T12:55:49+01:00", "utc": "2001-11-19T11:55:49Z", "ms": 1006170949138.573 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:09 on Sun 18 Nov to 05:42 on Mon 19 Nov.", "fact": "2001-11-18T04:09:05Z → 2001-11-19T04:42:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 18th, 12:08–12:56 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23146 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Sunday 18 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": "2001-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-18", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Sunday 18 November. Caturthī runs from 05:09 on Sun 18 Nov to 05:42 on Mon 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-11-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11990, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-11-20T06:57:07+01:00", "utc": "2001-11-20T05:57:07Z", "ms": 1006235827357.3102 }, "end": { "local": "2001-11-21T08:48:28+01:00", "utc": "2001-11-21T07:48:28Z", "ms": 1006328908492.7903 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-20T06:57:07+01:00", "utc": "2001-11-20T05:57:07Z", "ms": 1006235827357.3102 }, "end": { "local": "2001-11-21T08:48:28+01:00", "utc": "2001-11-21T07:48:28Z", "ms": 1006328908492.7903 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-20", "window": { "start": { "local": "2001-11-20T12:08:03+01:00", "utc": "2001-11-20T11:08:03Z", "ms": 1006254483266.7291 }, "end": { "local": "2001-11-20T12:56:03+01:00", "utc": "2001-11-20T11:56:03Z", "ms": 1006257363266.7291 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-21", "window": { "start": { "local": "2001-11-21T12:08:18+01:00", "utc": "2001-11-21T11:08:18Z", "ms": 1006340898189.831 }, "end": { "local": "2001-11-21T12:56:18+01:00", "utc": "2001-11-21T11:56:18Z", "ms": 1006343778189.831 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:57 on Tue 20 Nov to 08:48 on Wed 21 Nov.", "fact": "2001-11-20T05:57:07Z → 2001-11-21T07:48:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 20th, 12:08–12:56 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11990 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Lagos, 2001: Tuesday 20 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": "2001-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-20", "confidence": "determinate" } ], "quote": "In Lagos, Sūrya Ṣaṣṭhī (Chhath) 2001 falls on Tuesday 20 November. Ṣaṣṭhī runs from 06:57 on Tue 20 Nov to 08:48 on Wed 21 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-22", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2400, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2001-11-22T11:06:06+01:00", "utc": "2001-11-22T10:06:06Z", "ms": 1006423565886.5452 }, "end": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-22T11:06:06+01:00", "utc": "2001-11-22T10:06:06Z", "ms": 1006423565886.5452 }, "end": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-22", "window": { "start": { "local": "2001-11-22T12:08:34+01:00", "utc": "2001-11-22T11:08:34Z", "ms": 1006427313896.942 }, "end": { "local": "2001-11-22T12:56:34+01:00", "utc": "2001-11-22T11:56:34Z", "ms": 1006430193896.942 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-23", "window": { "start": { "local": "2001-11-23T12:08:50+01:00", "utc": "2001-11-23T11:08:50Z", "ms": 1006513730376.5825 }, "end": { "local": "2001-11-23T12:56:50+01:00", "utc": "2001-11-23T11:56:50Z", "ms": 1006516610376.5825 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 11:06 on Thu 22 Nov to 13:37 on Fri 23 Nov.", "fact": "2001-11-22T10:06:06Z → 2001-11-23T12:36:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 22nd, 12:09–12:57 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2400 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Lagos, 2001: Thursday 22 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2001-11-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-22", "confidence": "boundary" } ], "quote": "In Lagos, Gopāṣṭamī 2001 falls on Thursday 22 November. Aṣṭamī runs from 11:06 on Thu 22 Nov to 13:37 on Fri 23 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10916, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 }, "end": { "local": "2001-11-24T16:06:19+01:00", "utc": "2001-11-24T15:06:19Z", "ms": 1006614379054.2728 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 }, "end": { "local": "2001-11-24T16:06:19+01:00", "utc": "2001-11-24T15:06:19Z", "ms": 1006614379054.2728 } }, "kaala": "purvahna", "days": [ { "local_date": "2001-11-23", "window": { "start": { "local": "2001-11-23T06:39:04+01:00", "utc": "2001-11-23T05:39:04Z", "ms": 1006493943847.4908 }, "end": { "local": "2001-11-23T10:34:55+01:00", "utc": "2001-11-23T09:34:55Z", "ms": 1006508094866.8853 } }, "covered_min": 0, "window_min": 236, "qualifies": false }, { "local_date": "2001-11-24", "window": { "start": { "local": "2001-11-24T06:39:27+01:00", "utc": "2001-11-24T05:39:27Z", "ms": 1006580366929.5964 }, "end": { "local": "2001-11-24T10:35:14+01:00", "utc": "2001-11-24T09:35:14Z", "ms": 1006594514054.3147 } }, "covered_min": 236, "window_min": 236, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 13:37 on Fri 23 Nov to 16:06 on Sat 24 Nov.", "fact": "2001-11-23T12:36:51Z → 2001-11-24T15:06:19Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:39–10:35 on the 23rd, 06:39–10:35 on the 24th.", "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 236 minutes on the 23rd and 236 of 236 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10916 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Lagos, 2001: Saturday 24 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": "2001-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-24", "confidence": "determinate" } ], "quote": "In Lagos, Akṣaya Navamī (Amla Navami) 2001 falls on Saturday 24 November. Navamī runs from 13:37 on Fri 23 Nov to 16:06 on Sat 24 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2400, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 }, "end": { "local": "2001-11-24T16:06:19+01:00", "utc": "2001-11-24T15:06:19Z", "ms": 1006614379054.2728 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-23T13:36:51+01:00", "utc": "2001-11-23T12:36:51Z", "ms": 1006519010837.8673 }, "end": { "local": "2001-11-24T16:06:19+01:00", "utc": "2001-11-24T15:06:19Z", "ms": 1006614379054.2728 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-23", "window": { "start": { "local": "2001-11-23T12:08:50+01:00", "utc": "2001-11-23T11:08:50Z", "ms": 1006513730376.5825 }, "end": { "local": "2001-11-23T12:56:50+01:00", "utc": "2001-11-23T11:56:50Z", "ms": 1006516610376.5825 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-11-24", "window": { "start": { "local": "2001-11-24T12:09:08+01:00", "utc": "2001-11-24T11:09:08Z", "ms": 1006600147616.6738 }, "end": { "local": "2001-11-24T12:57:08+01:00", "utc": "2001-11-24T11:57:08Z", "ms": 1006603027616.6738 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 13:37 on Fri 23 Nov to 16:06 on Sat 24 Nov.", "fact": "2001-11-23T12:36:51Z → 2001-11-24T15:06:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 23rd, 12:09–12:57 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2400 s" }, { "step": "ruling", "text": "Durgā Navamī, Lagos, 2001: Saturday 24 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": "2001-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-23", "confidence": "determinate" } ], "quote": "In Lagos, Durgā Navamī 2001 falls on Saturday 24 November. Navamī runs from 13:37 on Fri 23 Nov to 16:06 on Sat 24 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-11-26", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37821, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-11-25T18:21:02+01:00", "utc": "2001-11-25T17:21:02Z", "ms": 1006708862170.0613 }, "end": { "local": "2001-11-26T20:10:18+01:00", "utc": "2001-11-26T19:10:18Z", "ms": 1006801818281.3054 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-25T18:21:02+01:00", "utc": "2001-11-25T17:21:02Z", "ms": 1006708862170.0613 }, "end": { "local": "2001-11-26T20:10:18+01:00", "utc": "2001-11-26T19:10:18Z", "ms": 1006801818281.3054 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-11-26", "window": { "start": { "local": "2001-11-26T06:40:15+01:00", "utc": "2001-11-26T05:40:15Z", "ms": 1006753214799.8411 }, "end": { "local": "2001-11-26T06:40:15+01:00", "utc": "2001-11-26T05:40:15Z", "ms": 1006753214799.8411 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-11-27", "window": { "start": { "local": "2001-11-27T06:40:40+01:00", "utc": "2001-11-27T05:40:40Z", "ms": 1006839639553.5695 }, "end": { "local": "2001-11-27T06:40:40+01:00", "utc": "2001-11-27T05:40:40Z", "ms": 1006839639553.5695 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:21 on Sun 25 Nov to 20:10 on Mon 26 Nov.", "fact": "2001-11-25T17:21:02Z → 2001-11-26T19:10:18Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 26th and 06:41 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 26th and is not 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 37821 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Lagos, 2001: Monday 26 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": "2001-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-26", "confidence": "determinate" } ], "quote": "In Lagos, Prabodhinī Ekādaśī 2001 falls on Monday 26 November. Ekādaśī runs from 18:21 on Sun 25 Nov to 20:10 on Mon 26 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-11-28", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4916, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-11-27T21:27:13+01:00", "utc": "2001-11-27T20:27:13Z", "ms": 1006892832642.3906 }, "end": { "local": "2001-11-28T22:08:43+01:00", "utc": "2001-11-28T21:08:43Z", "ms": 1006981723372.8304 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-27T21:27:13+01:00", "utc": "2001-11-27T20:27:13Z", "ms": 1006892832642.3906 }, "end": { "local": "2001-11-28T22:08:43+01:00", "utc": "2001-11-28T21:08:43Z", "ms": 1006981723372.8304 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-11-27", "window": { "start": { "local": "2001-11-27T18:27:28+01:00", "utc": "2001-11-27T17:27:28Z", "ms": 1006882047985.8046 }, "end": { "local": "2001-11-27T20:05:17+01:00", "utc": "2001-11-27T19:05:17Z", "ms": 1006887916898.2723 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2001-11-28", "window": { "start": { "local": "2001-11-28T18:27:43+01:00", "utc": "2001-11-28T17:27:43Z", "ms": 1006968463008.1483 }, "end": { "local": "2001-11-28T20:05:33+01:00", "utc": "2001-11-28T19:05:33Z", "ms": 1006974333354.8961 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:27 on Tue 27 Nov to 22:09 on Wed 28 Nov.", "fact": "2001-11-27T20:27:13Z → 2001-11-28T21:08:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–20:05 on the 27th, 18:28–20:06 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 98 minutes on the 27th and 98 of 98 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 4916 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Wednesday 28 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": "2001-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-28", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Wednesday 28 November. Trayodaśī runs from 21:27 on Tue 27 Nov to 22:09 on Wed 28 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6951, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-11-29T22:15:07+01:00", "utc": "2001-11-29T21:15:07Z", "ms": 1007068506673.7412 }, "end": { "local": "2001-11-30T21:49:03+01:00", "utc": "2001-11-30T20:49:03Z", "ms": 1007153342834.8157 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-29T22:15:07+01:00", "utc": "2001-11-29T21:15:07Z", "ms": 1007068506673.7412 }, "end": { "local": "2001-11-30T21:49:03+01:00", "utc": "2001-11-30T20:49:03Z", "ms": 1007153342834.8157 } }, "kaala": "nishita", "days": [ { "local_date": "2001-11-29", "window": { "start": { "local": "2001-11-30T00:10:58+01:00", "utc": "2001-11-29T23:10:58Z", "ms": 1007075457891.2455 }, "end": { "local": "2001-11-30T00:58:58+01:00", "utc": "2001-11-29T23:58:58Z", "ms": 1007078337891.2455 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-11-30", "window": { "start": { "local": "2001-12-01T00:11:20+01:00", "utc": "2001-11-30T23:11:20Z", "ms": 1007161879640.5067 }, "end": { "local": "2001-12-01T00:59:20+01:00", "utc": "2001-11-30T23:59:20Z", "ms": 1007164759640.5067 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:15 on Thu 29 Nov to 21:49 on Fri 30 Nov.", "fact": "2001-11-29T21:15:07Z → 2001-11-30T20:49:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 29th, 00:11–00:59 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 6951 s" }, { "step": "ruling", "text": "Rāsayātrā, Lagos, 2001: Thursday 29 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": "2001-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-29", "confidence": "determinate" } ], "quote": "In Lagos, Rāsayātrā 2001 falls on Thursday 29 November. Pūrṇimā runs from 22:15 on Thu 29 Nov to 21:49 on Fri 30 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31797, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-11-29T22:15:07+01:00", "utc": "2001-11-29T21:15:07Z", "ms": 1007068506673.7412 }, "end": { "local": "2001-11-30T21:49:03+01:00", "utc": "2001-11-30T20:49:03Z", "ms": 1007153342834.8157 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2001-11-29T22:15:07+01:00", "utc": "2001-11-29T21:15:07Z", "ms": 1007068506673.7412 }, "end": { "local": "2001-11-30T21:49:03+01:00", "utc": "2001-11-30T20:49:03Z", "ms": 1007153342834.8157 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-11-29", "window": { "start": { "local": "2001-11-29T12:10:45+01:00", "utc": "2001-11-29T11:10:45Z", "ms": 1007032244759.0366 }, "end": { "local": "2001-11-29T12:58:45+01:00", "utc": "2001-11-29T11:58:45Z", "ms": 1007035124759.0366 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-11-30", "window": { "start": { "local": "2001-11-30T12:11:06+01:00", "utc": "2001-11-30T11:11:06Z", "ms": 1007118666275.4265 }, "end": { "local": "2001-11-30T12:59:06+01:00", "utc": "2001-11-30T11:59:06Z", "ms": 1007121546275.4265 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:15 on Thu 29 Nov to 21:49 on Fri 30 Nov.", "fact": "2001-11-29T21:15:07Z → 2001-11-30T20:49:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 29th, 12:11–12:59 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31797 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Lagos, 2001: Friday 30 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": "2001-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-11-30", "confidence": "determinate" } ], "quote": "In Lagos, Kārtikī Pūrṇimā 2001 falls on Friday 30 November. Pūrṇimā runs from 22:15 on Thu 29 Nov to 21:49 on Fri 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/sankashta-chaturthi?on=2001-12-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11463, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-12-03T18:00:27+01:00", "utc": "2001-12-03T17:00:27Z", "ms": 1007398827292.6866 }, "end": { "local": "2001-12-04T16:10:13+01:00", "utc": "2001-12-04T15:10:13Z", "ms": 1007478612826.9166 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-03T18:00:27+01:00", "utc": "2001-12-03T17:00:27Z", "ms": 1007398827292.6866 }, "end": { "local": "2001-12-04T16:10:13+01:00", "utc": "2001-12-04T15:10:13Z", "ms": 1007478612826.9166 } }, "kaala": "moonrise", "days": [ { "local_date": "2001-12-03", "window": { "start": { "local": "2001-12-03T21:11:30+01:00", "utc": "2001-12-03T20:11:30Z", "ms": 1007410290172.872 }, "end": { "local": "2001-12-03T21:11:30+01:00", "utc": "2001-12-03T20:11:30Z", "ms": 1007410290172.872 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-12-04", "window": { "start": { "local": "2001-12-04T22:11:38+01:00", "utc": "2001-12-04T21:11:38Z", "ms": 1007500298241.4645 }, "end": { "local": "2001-12-04T22:11:38+01:00", "utc": "2001-12-04T21:11:38Z", "ms": 1007500298241.4645 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:00 on Mon 3 Dec to 16:10 on Tue 4 Dec.", "fact": "2001-12-03T17:00:27Z → 2001-12-04T15:10:13Z" }, { "step": "kaala", "text": "Moonrise is at 21:12 on the 3rd and 22:12 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11463 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lagos, 2001: Monday 3 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": "2001-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-03", "confidence": "determinate" } ], "quote": "In Lagos, Saṅkaṣṭa Caturthī 2001 falls on Monday 3 December. Caturthī runs from 18:00 on Mon 3 Dec to 16:10 on Tue 4 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/sankashta-chaturthi?on=2001-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/ekadashi?on=2001-12-10", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10907, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-12-10T03:44:54+01:00", "utc": "2001-12-10T02:44:54Z", "ms": 1007952294228.6035 }, "end": { "local": "2001-12-11T01:56:44+01:00", "utc": "2001-12-11T00:56:44Z", "ms": 1008032203504.9382 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-10T03:44:54+01:00", "utc": "2001-12-10T02:44:54Z", "ms": 1007952294228.6035 }, "end": { "local": "2001-12-11T01:56:44+01:00", "utc": "2001-12-11T00:56:44Z", "ms": 1008032203504.9382 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-12-10", "window": { "start": { "local": "2001-12-10T06:46:41+01:00", "utc": "2001-12-10T05:46:41Z", "ms": 1007963201486.2372 }, "end": { "local": "2001-12-10T06:46:41+01:00", "utc": "2001-12-10T05:46:41Z", "ms": 1007963201486.2372 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2001-12-11", "window": { "start": { "local": "2001-12-11T06:47:12+01:00", "utc": "2001-12-11T05:47:12Z", "ms": 1008049631577.0647 }, "end": { "local": "2001-12-11T06:47:12+01:00", "utc": "2001-12-11T05:47:12Z", "ms": 1008049631577.0647 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:45 on Mon 10 Dec to 01:57 on Tue 11 Dec.", "fact": "2001-12-10T02:44:54Z → 2001-12-11T00:56:44Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 10th and 06:47 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10907 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Lagos, 2001: Monday 10 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": "2001-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-10", "confidence": "determinate" } ], "quote": "In Lagos, Utpannā Ekādaśī 2001 falls on Monday 10 December. Ekādaśī runs from 03:45 on Mon 10 Dec to 01:57 on Tue 11 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/pradosha-vrata?on=2001-12-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10548, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-12-12T00:22:30+01:00", "utc": "2001-12-11T23:22:30Z", "ms": 1008112949663.1893 }, "end": { "local": "2001-12-12T23:06:31+01:00", "utc": "2001-12-12T22:06:31Z", "ms": 1008194791155.5759 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-12T00:22:30+01:00", "utc": "2001-12-11T23:22:30Z", "ms": 1008112949663.1893 }, "end": { "local": "2001-12-12T23:06:31+01:00", "utc": "2001-12-12T22:06:31Z", "ms": 1008194791155.5759 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-12-11", "window": { "start": { "local": "2001-12-11T18:32:13+01:00", "utc": "2001-12-11T17:32:13Z", "ms": 1008091932771.5006 }, "end": { "local": "2001-12-11T20:10:17+01:00", "utc": "2001-12-11T19:10:17Z", "ms": 1008097816647.1284 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2001-12-12", "window": { "start": { "local": "2001-12-12T18:32:39+01:00", "utc": "2001-12-12T17:32:39Z", "ms": 1008178358547.4382 }, "end": { "local": "2001-12-12T20:10:43+01:00", "utc": "2001-12-12T19:10:43Z", "ms": 1008184243039.0308 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:22 on Wed 12 Dec to 23:07 on Wed 12 Dec.", "fact": "2001-12-11T23:22:30Z → 2001-12-12T22:06:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:10 on the 11th, 18:33–20:11 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 11th and 98 of 98 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 10548 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lagos, 2001: Wednesday 12 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": "2001-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-12", "confidence": "determinate" } ], "quote": "In Lagos, Kṛṣṇa Pradoṣa Vrata 2001 falls on Wednesday 12 December. Trayodaśī runs from 00:22 on Wed 12 Dec to 23:07 on Wed 12 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/shivaratri?on=2001-12-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4194, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2001-12-12T23:06:31+01:00", "utc": "2001-12-12T22:06:31Z", "ms": 1008194791155.5759 }, "end": { "local": "2001-12-13T22:13:20+01:00", "utc": "2001-12-13T21:13:20Z", "ms": 1008278000107.9683 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-12T23:06:31+01:00", "utc": "2001-12-12T22:06:31Z", "ms": 1008194791155.5759 }, "end": { "local": "2001-12-13T22:13:20+01:00", "utc": "2001-12-13T21:13:20Z", "ms": 1008278000107.9683 } }, "kaala": "nishita", "days": [ { "local_date": "2001-12-12", "window": { "start": { "local": "2001-12-13T00:16:25+01:00", "utc": "2001-12-12T23:16:25Z", "ms": 1008198985390.91 }, "end": { "local": "2001-12-13T01:04:25+01:00", "utc": "2001-12-13T00:04:25Z", "ms": 1008201865390.91 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-12-13", "window": { "start": { "local": "2001-12-14T00:16:54+01:00", "utc": "2001-12-13T23:16:54Z", "ms": 1008285413814.668 }, "end": { "local": "2001-12-14T01:04:54+01:00", "utc": "2001-12-14T00:04:54Z", "ms": 1008288293814.668 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:07 on Wed 12 Dec to 22:13 on Thu 13 Dec.", "fact": "2001-12-12T22:06:31Z → 2001-12-13T21:13:20Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:16–01:04 on the 12th, 00:17–01:05 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4194 s" }, { "step": "ruling", "text": "Śivarātri, Lagos, 2001: Wednesday 12 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": "2001-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-12", "confidence": "determinate" } ], "quote": "In Lagos, Śivarātri 2001 falls on Wednesday 12 December. Caturdaśī runs from 23:07 on Wed 12 Dec to 22:13 on Thu 13 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/lagos/festivals/2001/shivaratri?on=2001-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/vinayaka-chaturthi?on=2001-12-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38278, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2001-12-17T23:44:33+01:00", "utc": "2001-12-17T22:44:33Z", "ms": 1008629072949.591 }, "end": { "local": "2001-12-19T01:29:43+01:00", "utc": "2001-12-19T00:29:43Z", "ms": 1008721782568.0287 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-17T23:44:33+01:00", "utc": "2001-12-17T22:44:33Z", "ms": 1008629072949.591 }, "end": { "local": "2001-12-19T01:29:43+01:00", "utc": "2001-12-19T00:29:43Z", "ms": 1008721782568.0287 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-17", "window": { "start": { "local": "2001-12-17T12:18:35+01:00", "utc": "2001-12-17T11:18:35Z", "ms": 1008587914906.8069 }, "end": { "local": "2001-12-17T13:06:35+01:00", "utc": "2001-12-17T12:06:35Z", "ms": 1008590794906.8069 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-12-18", "window": { "start": { "local": "2001-12-18T12:19:05+01:00", "utc": "2001-12-18T11:19:05Z", "ms": 1008674344513.9873 }, "end": { "local": "2001-12-18T13:07:05+01:00", "utc": "2001-12-18T12:07:05Z", "ms": 1008677224513.9873 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:45 on Mon 17 Dec to 01:30 on Wed 19 Dec.", "fact": "2001-12-17T22:44:33Z → 2001-12-19T00:29:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 17th, 12:19–13:07 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38278 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lagos, 2001: Tuesday 18 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": "2001-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-18", "confidence": "determinate" } ], "quote": "In Lagos, Vināyaka Caturthī 2001 falls on Tuesday 18 December. Caturthī runs from 23:45 on Mon 17 Dec to 01:30 on Wed 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/vinayaka-chaturthi?on=2001-12-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31136, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2001-12-19T01:29:43+01:00", "utc": "2001-12-19T00:29:43Z", "ms": 1008721782568.0287 }, "end": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-19T01:29:43+01:00", "utc": "2001-12-19T00:29:43Z", "ms": 1008721782568.0287 }, "end": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-19", "window": { "start": { "local": "2001-12-19T12:19:34+01:00", "utc": "2001-12-19T11:19:34Z", "ms": 1008760774256.1743 }, "end": { "local": "2001-12-19T13:07:34+01:00", "utc": "2001-12-19T12:07:34Z", "ms": 1008763654256.1743 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-12-20", "window": { "start": { "local": "2001-12-20T12:20:04+01:00", "utc": "2001-12-20T11:20:04Z", "ms": 1008847204096.9474 }, "end": { "local": "2001-12-20T13:08:04+01:00", "utc": "2001-12-20T12:08:04Z", "ms": 1008850084096.9474 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:30 on Wed 19 Dec to 03:41 on Thu 20 Dec.", "fact": "2001-12-19T00:29:43Z → 2001-12-20T02:41:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 19th, 12:20–13:08 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31136 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Lagos, 2001: Wednesday 19 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2001-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-19", "confidence": "determinate" } ], "quote": "In Lagos, Nāga Pañcamī (Mārgaśīrṣa) 2001 falls on Wednesday 19 December. Pañcamī runs from 01:30 on Wed 19 Dec to 03:41 on Thu 20 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22266, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 }, "end": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 }, "end": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-20", "window": { "start": { "local": "2001-12-20T12:20:04+01:00", "utc": "2001-12-20T11:20:04Z", "ms": 1008847204096.9474 }, "end": { "local": "2001-12-20T13:08:04+01:00", "utc": "2001-12-20T12:08:04Z", "ms": 1008850084096.9474 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-12-21", "window": { "start": { "local": "2001-12-21T12:20:34+01:00", "utc": "2001-12-21T11:20:34Z", "ms": 1008933634000.3208 }, "end": { "local": "2001-12-21T13:08:34+01:00", "utc": "2001-12-21T12:08:34Z", "ms": 1008936514000.3208 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:41 on Thu 20 Dec to 06:09 on Fri 21 Dec.", "fact": "2001-12-20T02:41:08Z → 2001-12-21T05:09:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 20th, 12:21–13:09 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22266 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Lagos, 2001: Thursday 20 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": "2001-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-20", "confidence": "determinate" } ], "quote": "In Lagos, Campā Ṣaṣṭhī 2001 falls on Thursday 20 December. Ṣaṣṭhī runs from 03:41 on Thu 20 Dec to 06:09 on Fri 21 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22266, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 }, "end": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-20T03:41:08+01:00", "utc": "2001-12-20T02:41:08Z", "ms": 1008816067611.2214 }, "end": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-20", "window": { "start": { "local": "2001-12-20T12:20:04+01:00", "utc": "2001-12-20T11:20:04Z", "ms": 1008847204096.9474 }, "end": { "local": "2001-12-20T13:08:04+01:00", "utc": "2001-12-20T12:08:04Z", "ms": 1008850084096.9474 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-12-21", "window": { "start": { "local": "2001-12-21T12:20:34+01:00", "utc": "2001-12-21T11:20:34Z", "ms": 1008933634000.3208 }, "end": { "local": "2001-12-21T13:08:34+01:00", "utc": "2001-12-21T12:08:34Z", "ms": 1008936514000.3208 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:41 on Thu 20 Dec to 06:09 on Fri 21 Dec.", "fact": "2001-12-20T02:41:08Z → 2001-12-21T05:09:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 20th, 12:21–13:09 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22266 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Lagos, 2001: Thursday 20 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": "2001-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-20", "confidence": "determinate" } ], "quote": "In Lagos, Skanda Ṣaṣṭhī 2001 falls on Thursday 20 December. Ṣaṣṭhī runs from 03:41 on Thu 20 Dec to 06:09 on Fri 21 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13116, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 }, "end": { "local": "2001-12-22T08:42:28+01:00", "utc": "2001-12-22T07:42:28Z", "ms": 1009006947997.3239 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-21T06:09:28+01:00", "utc": "2001-12-21T05:09:28Z", "ms": 1008911368065.4724 }, "end": { "local": "2001-12-22T08:42:28+01:00", "utc": "2001-12-22T07:42:28Z", "ms": 1009006947997.3239 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-21", "window": { "start": { "local": "2001-12-21T12:20:34+01:00", "utc": "2001-12-21T11:20:34Z", "ms": 1008933634000.3208 }, "end": { "local": "2001-12-21T13:08:34+01:00", "utc": "2001-12-21T12:08:34Z", "ms": 1008936514000.3208 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2001-12-22", "window": { "start": { "local": "2001-12-22T12:21:04+01:00", "utc": "2001-12-22T11:21:04Z", "ms": 1009020063930.7705 }, "end": { "local": "2001-12-22T13:09:04+01:00", "utc": "2001-12-22T12:09:04Z", "ms": 1009022943930.7705 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 06:09 on Fri 21 Dec to 08:42 on Sat 22 Dec.", "fact": "2001-12-21T05:09:28Z → 2001-12-22T07:42:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 21st, 12:21–13:09 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13116 s" }, { "step": "ruling", "text": "Mitra Saptamī, Lagos, 2001: Friday 21 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": "2001-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-21", "confidence": "determinate" } ], "quote": "In Lagos, Mitra Saptamī 2001 falls on Friday 21 December. Saptamī runs from 06:09 on Fri 21 Dec to 08:42 on Sat 22 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/ekadashi?on=2001-12-26", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27722, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2001-12-25T14:36:16+01:00", "utc": "2001-12-25T13:36:16Z", "ms": 1009287375873.0692 }, "end": { "local": "2001-12-26T15:24:06+01:00", "utc": "2001-12-26T14:24:06Z", "ms": 1009376646039.9955 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-25T14:36:16+01:00", "utc": "2001-12-25T13:36:16Z", "ms": 1009287375873.0692 }, "end": { "local": "2001-12-26T15:24:06+01:00", "utc": "2001-12-26T14:24:06Z", "ms": 1009376646039.9955 } }, "kaala": "sunrise", "days": [ { "local_date": "2001-12-25", "window": { "start": { "local": "2001-12-25T06:54:14+01:00", "utc": "2001-12-25T05:54:14Z", "ms": 1009259653580.8464 }, "end": { "local": "2001-12-25T06:54:14+01:00", "utc": "2001-12-25T05:54:14Z", "ms": 1009259653580.8464 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2001-12-26", "window": { "start": { "local": "2001-12-26T06:54:42+01:00", "utc": "2001-12-26T05:54:42Z", "ms": 1009346082298.038 }, "end": { "local": "2001-12-26T06:54:42+01:00", "utc": "2001-12-26T05:54:42Z", "ms": 1009346082298.038 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:36 on Tue 25 Dec to 15:24 on Wed 26 Dec.", "fact": "2001-12-25T13:36:16Z → 2001-12-26T14:24:06Z" }, { "step": "kaala", "text": "Sunrise is at 06:54 on the 25th and 06:55 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27722 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Lagos, 2001: Wednesday 26 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": "2001-12-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-26", "confidence": "determinate" } ], "quote": "In Lagos, Mokṣadā Ekādaśī 2001 falls on Wednesday 26 December. Ekādaśī runs from 14:36 on Tue 25 Dec to 15:24 on Wed 26 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/lagos/festivals/2001/ekadashi?on=2001-12-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7983, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2001-12-26T15:24:06+01:00", "utc": "2001-12-26T14:24:06Z", "ms": 1009376646039.9955 }, "end": { "local": "2001-12-27T15:28:19+01:00", "utc": "2001-12-27T14:28:19Z", "ms": 1009463299255.4529 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-26T15:24:06+01:00", "utc": "2001-12-26T14:24:06Z", "ms": 1009376646039.9955 }, "end": { "local": "2001-12-27T15:28:19+01:00", "utc": "2001-12-27T14:28:19Z", "ms": 1009463299255.4529 } }, "kaala": "madhyahna", "days": [ { "local_date": "2001-12-26", "window": { "start": { "local": "2001-12-26T12:23:03+01:00", "utc": "2001-12-26T11:23:03Z", "ms": 1009365783232.3148 }, "end": { "local": "2001-12-26T13:11:03+01:00", "utc": "2001-12-26T12:11:03Z", "ms": 1009368663232.3148 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2001-12-27", "window": { "start": { "local": "2001-12-27T12:23:33+01:00", "utc": "2001-12-27T11:23:33Z", "ms": 1009452212786.1963 }, "end": { "local": "2001-12-27T13:11:33+01:00", "utc": "2001-12-27T12:11:33Z", "ms": 1009455092786.1963 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 15:24 on Wed 26 Dec to 15:28 on Thu 27 Dec.", "fact": "2001-12-26T14:24:06Z → 2001-12-27T14:28:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 26th, 12:24–13:12 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7983 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Lagos, 2001: Thursday 27 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": "2001-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-27", "confidence": "determinate" } ], "quote": "In Lagos, Akhaṇḍa Dvādaśī 2001 falls on Thursday 27 December. Dvādaśī runs from 15:24 on Wed 26 Dec to 15:28 on Thu 27 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lagos/festivals/2001/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": "/lagos/festivals/2001/pradosha-vrata?on=2001-12-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11496, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2001-12-27T15:28:19+01:00", "utc": "2001-12-27T14:28:19Z", "ms": 1009463299255.4529 }, "end": { "local": "2001-12-28T14:49:36+01:00", "utc": "2001-12-28T13:49:36Z", "ms": 1009547376145.1284 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-27T15:28:19+01:00", "utc": "2001-12-27T14:28:19Z", "ms": 1009463299255.4529 }, "end": { "local": "2001-12-28T14:49:36+01:00", "utc": "2001-12-28T13:49:36Z", "ms": 1009547376145.1284 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-12-27", "window": { "start": { "local": "2001-12-27T18:39:55+01:00", "utc": "2001-12-27T17:39:55Z", "ms": 1009474794930.0521 }, "end": { "local": "2001-12-27T20:18:01+01:00", "utc": "2001-12-27T19:18:01Z", "ms": 1009480680750.5372 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "2001-12-28", "window": { "start": { "local": "2001-12-28T18:40:26+01:00", "utc": "2001-12-28T17:40:26Z", "ms": 1009561225752.6288 }, "end": { "local": "2001-12-28T20:18:31+01:00", "utc": "2001-12-28T19:18:31Z", "ms": 1009567111131.3959 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:28 on Thu 27 Dec to 14:50 on Fri 28 Dec.", "fact": "2001-12-27T14:28:19Z → 2001-12-28T13:49:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:18 on the 27th, 18:40–20:19 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 98 of 98 minutes on the 27th and 0 of 98 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 11496 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lagos, 2001: Thursday 27 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": "2001-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-27", "confidence": "determinate" } ], "quote": "In Lagos, Śukla Pradoṣa Vrata 2001 falls on Thursday 27 December. Trayodaśī runs from 15:28 on Thu 27 Dec to 14:50 on Fri 28 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/pradosha-vrata?on=2001-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lagos/festivals/2001/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "2332459", "year": 2001, "local_date": "2001-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18555, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2001-12-29T13:31:42+01:00", "utc": "2001-12-29T12:31:42Z", "ms": 1009629101700.1078 }, "end": { "local": "2001-12-30T11:40:33+01:00", "utc": "2001-12-30T10:40:33Z", "ms": 1009708832569.1427 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2001-12-29T13:31:42+01:00", "utc": "2001-12-29T12:31:42Z", "ms": 1009629101700.1078 }, "end": { "local": "2001-12-30T11:40:33+01:00", "utc": "2001-12-30T10:40:33Z", "ms": 1009708832569.1427 } }, "kaala": "pradosha", "days": [ { "local_date": "2001-12-29", "window": { "start": { "local": "2001-12-29T18:40:57+01:00", "utc": "2001-12-29T17:40:57Z", "ms": 1009647656603.5927 }, "end": { "local": "2001-12-29T20:19:01+01:00", "utc": "2001-12-29T19:19:01Z", "ms": 1009653541475.6526 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "2001-12-30", "window": { "start": { "local": "2001-12-30T18:41:27+01:00", "utc": "2001-12-30T17:41:27Z", "ms": 1009734087453.1675 }, "end": { "local": "2001-12-30T20:19:32+01:00", "utc": "2001-12-30T19:19:32Z", "ms": 1009739971754.0126 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:32 on Sat 29 Dec to 11:41 on Sun 30 Dec.", "fact": "2001-12-29T12:31:42Z → 2001-12-30T10:40:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:41–20:19 on the 29th, 18:41–20:20 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 98 of 98 minutes on the 29th and 0 of 98 on the 30th.", "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 18555 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Lagos, 2001: Saturday 29 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": "2001-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2001-12-29", "confidence": "determinate" } ], "quote": "In Lagos, Dattātreyotpatti (Datta Jayanti) 2001 falls on Saturday 29 December. Pūrṇimā runs from 13:32 on Sat 29 Dec to 11:41 on Sun 30 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lagos/festivals/2001/dattatreyotpatti", "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" } }