{ "id": "/fuzhou/festivals/2037", "place": { "id": "1810821", "slug": "fuzhou", "name": "Fuzhou", "region": "Fujian, China", "country": "CN", "lat": 26.06139, "lon": 119.30611, "elevation_m": 14, "tz": "Asia/Shanghai" }, "year": 2037, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-01-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4598, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-05T01:16:18+08:00", "utc": "2037-01-04T17:16:18Z", "ms": 2114702178028.9995 }, "end": { "local": "2037-01-05T22:17:08+08:00", "utc": "2037-01-05T14:17:08Z", "ms": 2114777827619.5398 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-05T01:16:18+08:00", "utc": "2037-01-04T17:16:18Z", "ms": 2114702178028.9995 }, "end": { "local": "2037-01-05T22:17:08+08:00", "utc": "2037-01-05T14:17:08Z", "ms": 2114777827619.5398 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-01-04", "window": { "start": { "local": "2037-01-04T19:54:36+08:00", "utc": "2037-01-04T11:54:36Z", "ms": 2114682875599.7673 }, "end": { "local": "2037-01-04T19:54:36+08:00", "utc": "2037-01-04T11:54:36Z", "ms": 2114682875599.7673 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-01-05", "window": { "start": { "local": "2037-01-05T21:00:29+08:00", "utc": "2037-01-05T13:00:29Z", "ms": 2114773229316.5876 }, "end": { "local": "2037-01-05T21:00:29+08:00", "utc": "2037-01-05T13:00:29Z", "ms": 2114773229316.5876 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:16 on Mon 5 Jan to 22:17 on Mon 5 Jan.", "fact": "2037-01-04T17:16:18Z → 2037-01-05T14:17:08Z" }, { "step": "kaala", "text": "Moonrise is at 19:55 on the 4th and 21:00 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4598 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Monday 5 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": "2037-01-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Monday 5 January. Caturthī runs from 01:16 on Mon 5 Jan to 22:17 on Mon 5 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-01-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-01-12", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20142, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-01-11T12:27:34+08:00", "utc": "2037-01-11T04:27:34Z", "ms": 2115260853939.21 }, "end": { "local": "2037-01-12T12:32:41+08:00", "utc": "2037-01-12T04:32:41Z", "ms": 2115347560764.9656 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-11T12:27:34+08:00", "utc": "2037-01-11T04:27:34Z", "ms": 2115260853939.21 }, "end": { "local": "2037-01-12T12:32:41+08:00", "utc": "2037-01-12T04:32:41Z", "ms": 2115347560764.9656 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-01-11", "window": { "start": { "local": "2037-01-11T06:51:52+08:00", "utc": "2037-01-10T22:51:52Z", "ms": 2115240712091.2888 }, "end": { "local": "2037-01-11T06:51:52+08:00", "utc": "2037-01-10T22:51:52Z", "ms": 2115240712091.2888 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-01-12", "window": { "start": { "local": "2037-01-12T06:51:54+08:00", "utc": "2037-01-11T22:51:54Z", "ms": 2115327113625.1318 }, "end": { "local": "2037-01-12T06:51:54+08:00", "utc": "2037-01-11T22:51:54Z", "ms": 2115327113625.1318 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:28 on Sun 11 Jan to 12:33 on Mon 12 Jan.", "fact": "2037-01-11T04:27:34Z → 2037-01-12T04:32:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:52 on the 11th and 06:52 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20142 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Fuzhou, 2037: Monday 12 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": "2037-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṣaṭtilā Ekādaśī 2037 falls on Monday 12 January. Ekādaśī runs from 12:28 on Sun 11 Jan to 12:33 on Mon 12 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15343, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-13T02:17:25+08:00", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T17:31:10+08:00", "utc": "2037-01-13T09:31:10Z", "ms": 2115451869901.814 }, "end": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 }, "end": { "local": "2037-01-15T17:32:42+08:00", "utc": "2037-01-15T09:32:42Z", "ms": 2115624762108.9312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2037-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 13:16 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:32, and the day of the 15th ends at 17:33.", "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 15343 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Fuzhou, 2037: Tuesday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-13", "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": "2037-01-13", "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 Fuzhou, Bhogi 2037 falls on Tuesday 13 January. It is kept the day before Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 13:16 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-01-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12086, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-01-13T13:07:26+08:00", "utc": "2037-01-13T05:07:26Z", "ms": 2115436045606.5217 }, "end": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-13T13:07:26+08:00", "utc": "2037-01-13T05:07:26Z", "ms": 2115436045606.5217 }, "end": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-13", "window": { "start": { "local": "2037-01-13T17:31:10+08:00", "utc": "2037-01-13T09:31:10Z", "ms": 2115451869901.814 }, "end": { "local": "2037-01-13T19:17:56+08:00", "utc": "2037-01-13T11:17:56Z", "ms": 2115458275542.6372 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 }, "end": { "local": "2037-01-14T19:18:35+08:00", "utc": "2037-01-14T11:18:35Z", "ms": 2115544715016.1643 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:07 on Tue 13 Jan to 14:10 on Wed 14 Jan.", "fact": "2037-01-13T05:07:26Z → 2037-01-14T06:10:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:31–19:18 on the 13th, 17:32–19:19 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 107 of 107 minutes on the 13th and 0 of 107 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 12086 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Tuesday 13 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": "2037-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Tuesday 13 January. Trayodaśī runs from 13:07 on Tue 13 Jan to 14:10 on Wed 14 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-01-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15343, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-13T02:17:25+08:00", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T17:31:10+08:00", "utc": "2037-01-13T09:31:10Z", "ms": 2115451869901.814 }, "end": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 }, "end": { "local": "2037-01-15T17:32:42+08:00", "utc": "2037-01-15T09:32:42Z", "ms": 2115624762108.9312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 13:16 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:32, and the day of the 15th ends at 17:33.", "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 15343 s" }, { "step": "ruling", "text": "Pongal, Fuzhou, 2037: Wednesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-14", "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": "2037-01-14", "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 Fuzhou, Pongal 2037 falls on Wednesday 14 January. The Sun enters Makara at 13:16 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38627, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-13T02:17:25+08:00", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "civil-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T00:00:00+08:00", "utc": "2037-01-13T16:00:00Z", "ms": 2115475200000 }, "end": { "local": "2037-01-15T00:00:00+08:00", "utc": "2037-01-14T16:00:00Z", "ms": 2115561600000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-15T00:00:00+08:00", "utc": "2037-01-14T16:00:00Z", "ms": 2115561600000 }, "end": { "local": "2037-01-16T00:00:00+08:00", "utc": "2037-01-15T16:00:00Z", "ms": 2115648000000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 13:16 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Fuzhou.", "fact": "civil-day: midnight-to-midnight · Asia/Shanghai" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 38627 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Fuzhou, 2037: Wednesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2037-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2037-01-14", "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 Fuzhou, Makara Saṅkrānti 2037 falls on Wednesday 14 January. The Sun enters Makara at 13:16 on Wed 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shivaratri?on=2037-01-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29280, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T15:40:14+08:00", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T15:40:14+08:00", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 } }, "kaala": "nishita", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T23:47:53+08:00", "utc": "2037-01-14T15:47:53Z", "ms": 2115560872574.36 }, "end": { "local": "2037-01-15T00:35:53+08:00", "utc": "2037-01-14T16:35:53Z", "ms": 2115563752574.36 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-15T23:48:13+08:00", "utc": "2037-01-15T15:48:13Z", "ms": 2115647293440.357 }, "end": { "local": "2037-01-16T00:36:13+08:00", "utc": "2037-01-15T16:36:13Z", "ms": 2115650173440.357 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan.", "fact": "2037-01-14T06:10:30Z → 2037-01-15T07:40:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:48–00:36 on the 14th, 23:48–00:36 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29280 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Wednesday 14 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": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Wednesday 14 January. Caturdaśī runs from 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-01-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15343, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-13T02:17:25+08:00", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T13:16:13+08:00", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T17:31:10+08:00", "utc": "2037-01-13T09:31:10Z", "ms": 2115451869901.814 }, "end": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T17:31:56+08:00", "utc": "2037-01-14T09:31:56Z", "ms": 2115538315904.093 }, "end": { "local": "2037-01-15T17:32:42+08:00", "utc": "2037-01-15T09:32:42Z", "ms": 2115624762108.9312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2037-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 13:16 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:32, and the day of the 15th ends at 17:33.", "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 15343 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Fuzhou, 2037: Thursday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-15", "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": "2037-01-15", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Fuzhou, Mattu Pongal 2037 falls on Thursday 15 January. It is kept the day after Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 13:16 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26317, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T15:40:14+08:00", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-14T14:10:30+08:00", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T15:40:14+08:00", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T05:05:07+08:00", "utc": "2037-01-13T21:05:07Z", "ms": 2115493506567.1646 }, "end": { "local": "2037-01-14T06:51:52+08:00", "utc": "2037-01-13T22:51:52Z", "ms": 2115499912207.9878 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-15T05:05:10+08:00", "utc": "2037-01-14T21:05:10Z", "ms": 2115579910132.556 }, "end": { "local": "2037-01-15T06:51:49+08:00", "utc": "2037-01-14T22:51:49Z", "ms": 2115586309244.6272 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan.", "fact": "2037-01-14T06:10:30Z → 2037-01-15T07:40:14Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:05–06:52 on the 14th, 05:05–06:52 on the 15th.", "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 107 minutes on the 14th and 107 of 107 on the 15th.", "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 26317 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Fuzhou, 2037: Thursday 15 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": "2037-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Tarpaṇa 2037 falls on Thursday 15 January. Caturdaśī runs from 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28898, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-20T01:04:43+08:00", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-20T01:04:43+08:00", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-20", "window": { "start": { "local": "2037-01-20T11:49:53+08:00", "utc": "2037-01-20T03:49:53Z", "ms": 2116036193268.965 }, "end": { "local": "2037-01-20T12:37:53+08:00", "utc": "2037-01-20T04:37:53Z", "ms": 2116039073268.965 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-21", "window": { "start": { "local": "2037-01-21T11:50:11+08:00", "utc": "2037-01-21T03:50:11Z", "ms": 2116122610555.3438 }, "end": { "local": "2037-01-21T12:38:11+08:00", "utc": "2037-01-21T04:38:11Z", "ms": 2116125490555.3438 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:05 on Tue 20 Jan to 03:49 on Wed 21 Jan.", "fact": "2037-01-19T17:04:43Z → 2037-01-20T19:48:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 20th, 11:50–12:38 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28898 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Fuzhou, 2037: Tuesday 20 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": "2037-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2037 falls on Tuesday 20 January. Caturthī runs from 01:05 on Tue 20 Jan to 03:49 on Wed 21 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20572, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-20T01:04:43+08:00", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-20T01:04:43+08:00", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-19", "window": { "start": { "local": "2037-01-19T17:35:48+08:00", "utc": "2037-01-19T09:35:48Z", "ms": 2115970548159.1423 }, "end": { "local": "2037-01-19T19:21:51+08:00", "utc": "2037-01-19T11:21:51Z", "ms": 2115976911304.242 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2037-01-20", "window": { "start": { "local": "2037-01-20T17:36:35+08:00", "utc": "2037-01-20T09:36:35Z", "ms": 2116056994790.541 }, "end": { "local": "2037-01-20T19:22:30+08:00", "utc": "2037-01-20T11:22:30Z", "ms": 2116063350113.426 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:05 on Tue 20 Jan to 03:49 on Wed 21 Jan.", "fact": "2037-01-19T17:04:43Z → 2037-01-20T19:48:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:36–19:22 on the 19th, 17:37–19:23 on the 20th.", "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 106 minutes on the 19th and 106 of 106 on the 20th.", "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 20572 s" }, { "step": "ruling", "text": "Tila Caturthī, Fuzhou, 2037: Tuesday 20 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": "2037-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Tila Caturthī 2037 falls on Tuesday 20 January. Caturthī runs from 01:05 on Tue 20 Jan to 03:49 on Wed 21 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19637, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T06:23:10+08:00", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T06:23:10+08:00", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-21", "window": { "start": { "local": "2037-01-21T11:50:11+08:00", "utc": "2037-01-21T03:50:11Z", "ms": 2116122610555.3438 }, "end": { "local": "2037-01-21T12:38:11+08:00", "utc": "2037-01-21T04:38:11Z", "ms": 2116125490555.3438 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-22", "window": { "start": { "local": "2037-01-22T11:50:27+08:00", "utc": "2037-01-22T03:50:27Z", "ms": 2116209027061.4297 }, "end": { "local": "2037-01-22T12:38:27+08:00", "utc": "2037-01-22T04:38:27Z", "ms": 2116211907061.4297 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:49 on Wed 21 Jan to 06:23 on Thu 22 Jan.", "fact": "2037-01-20T19:48:33Z → 2037-01-21T22:23:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 21st, 11:50–12:38 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 19637 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Fuzhou, 2037: Wednesday 21 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": "2037-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Śrī Pañcamī 2037 falls on Wednesday 21 January. Pañcamī runs from 03:49 on Wed 21 Jan to 06:23 on Thu 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19637, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T06:23:10+08:00", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-21T03:48:33+08:00", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T06:23:10+08:00", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-21", "window": { "start": { "local": "2037-01-21T11:50:11+08:00", "utc": "2037-01-21T03:50:11Z", "ms": 2116122610555.3438 }, "end": { "local": "2037-01-21T12:38:11+08:00", "utc": "2037-01-21T04:38:11Z", "ms": 2116125490555.3438 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-22", "window": { "start": { "local": "2037-01-22T11:50:27+08:00", "utc": "2037-01-22T03:50:27Z", "ms": 2116209027061.4297 }, "end": { "local": "2037-01-22T12:38:27+08:00", "utc": "2037-01-22T04:38:27Z", "ms": 2116211907061.4297 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:49 on Wed 21 Jan to 06:23 on Thu 22 Jan.", "fact": "2037-01-20T19:48:33Z → 2037-01-21T22:23:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 21st, 11:50–12:38 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 19637 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Fuzhou, 2037: Wednesday 21 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": "2037-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Vasanta Pañcamī 2037 falls on Wednesday 21 January. Pañcamī runs from 03:49 on Wed 21 Jan to 06:23 on Thu 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6392, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-01-23T08:37:03+08:00", "utc": "2037-01-23T00:37:03Z", "ms": 2116283822650.7698 }, "end": { "local": "2037-01-24T10:19:04+08:00", "utc": "2037-01-24T02:19:04Z", "ms": 2116376344052.356 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-23T08:37:03+08:00", "utc": "2037-01-23T00:37:03Z", "ms": 2116283822650.7698 }, "end": { "local": "2037-01-24T10:19:04+08:00", "utc": "2037-01-24T02:19:04Z", "ms": 2116376344052.356 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-01-23", "window": { "start": { "local": "2037-01-23T05:04:52+08:00", "utc": "2037-01-22T21:04:52Z", "ms": 2116271092044.4402 }, "end": { "local": "2037-01-23T06:50:31+08:00", "utc": "2037-01-22T22:50:31Z", "ms": 2116277431135.882 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2037-01-24", "window": { "start": { "local": "2037-01-24T05:04:44+08:00", "utc": "2037-01-23T21:04:44Z", "ms": 2116357483916.9731 }, "end": { "local": "2037-01-24T06:50:15+08:00", "utc": "2037-01-23T22:50:15Z", "ms": 2116363814609.7766 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 08:37 on Fri 23 Jan to 10:19 on Sat 24 Jan.", "fact": "2037-01-23T00:37:03Z → 2037-01-24T02:19:04Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:05–06:51 on the 23rd, 05:05–06:50 on the 24th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 0 of 106 minutes on the 23rd and 106 of 106 on the 24th.", "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 6392 s" }, { "step": "ruling", "text": "Ratha Saptamī, Fuzhou, 2037: Saturday 24 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": "2037-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Ratha Saptamī 2037 falls on Saturday 24 January. Saptamī runs from 08:37 on Fri 23 Jan to 10:19 on Sat 24 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-01-28", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10009, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-01-27T10:58:52+08:00", "utc": "2037-01-27T02:58:52Z", "ms": 2116637932291.3105 }, "end": { "local": "2037-01-28T09:35:43+08:00", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-27T10:58:52+08:00", "utc": "2037-01-27T02:58:52Z", "ms": 2116637932291.3105 }, "end": { "local": "2037-01-28T09:35:43+08:00", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-01-27", "window": { "start": { "local": "2037-01-27T06:49:16+08:00", "utc": "2037-01-26T22:49:16Z", "ms": 2116622956205.0518 }, "end": { "local": "2037-01-27T06:49:16+08:00", "utc": "2037-01-26T22:49:16Z", "ms": 2116622956205.0518 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T06:48:54+08:00", "utc": "2037-01-27T22:48:54Z", "ms": 2116709333839.8887 }, "end": { "local": "2037-01-28T06:48:54+08:00", "utc": "2037-01-27T22:48:54Z", "ms": 2116709333839.8887 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:59 on Tue 27 Jan to 09:36 on Wed 28 Jan.", "fact": "2037-01-27T02:58:52Z → 2037-01-28T01:35:43Z" }, { "step": "kaala", "text": "Sunrise is at 06:49 on the 27th and 06:49 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is 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 10009 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Fuzhou, 2037: Wednesday 28 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": "2037-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Jayā Ekādaśī 2037 falls on Wednesday 28 January. Ekādaśī runs from 10:59 on Tue 27 Jan to 09:36 on Wed 28 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-01-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8166, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-01-28T09:35:43+08:00", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "end": { "local": "2037-01-29T07:29:07+08:00", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-28T09:35:43+08:00", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "end": { "local": "2037-01-29T07:29:07+08:00", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T11:51:49+08:00", "utc": "2037-01-28T03:51:49Z", "ms": 2116727509134.4622 }, "end": { "local": "2037-01-28T12:39:49+08:00", "utc": "2037-01-28T04:39:49Z", "ms": 2116730389134.4622 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-29", "window": { "start": { "local": "2037-01-29T11:52:00+08:00", "utc": "2037-01-29T03:52:00Z", "ms": 2116813919927.3237 }, "end": { "local": "2037-01-29T12:40:00+08:00", "utc": "2037-01-29T04:40:00Z", "ms": 2116816799927.3237 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:36 on Wed 28 Jan to 07:29 on Thu 29 Jan.", "fact": "2037-01-28T01:35:43Z → 2037-01-28T23:29:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 28th, 11:52–12:40 on the 29th.", "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 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8166 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Fuzhou, 2037: Wednesday 28 January.", "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": "2037-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Bhīṣma Dvādaśī 2037 falls on Wednesday 28 January. Dvādaśī runs from 09:36 on Wed 28 Jan to 07:29 on Thu 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-01-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33467, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-01-29T07:29:07+08:00", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "end": { "local": "2037-01-30T04:45:54+08:00", "utc": "2037-01-29T20:45:54Z", "ms": 2116874753699.2207 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-29T07:29:07+08:00", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "end": { "local": "2037-01-30T04:45:54+08:00", "utc": "2037-01-29T20:45:54Z", "ms": 2116874753699.2207 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T17:42:44+08:00", "utc": "2037-01-28T09:42:44Z", "ms": 2116748564429.0356 }, "end": { "local": "2037-01-28T19:27:31+08:00", "utc": "2037-01-28T11:27:31Z", "ms": 2116754850512.316 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2037-01-29", "window": { "start": { "local": "2037-01-29T17:43:30+08:00", "utc": "2037-01-29T09:43:30Z", "ms": 2116835009801.0098 }, "end": { "local": "2037-01-29T19:28:06+08:00", "utc": "2037-01-29T11:28:06Z", "ms": 2116841286476.2893 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:29 on Thu 29 Jan to 04:46 on Fri 30 Jan.", "fact": "2037-01-28T23:29:07Z → 2037-01-29T20:45:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:43–19:28 on the 28th, 17:43–19:28 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 105 minutes on the 28th and 105 of 105 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33467 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Thursday 29 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": "2037-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Thursday 29 January. Trayodaśī runs from 07:29 on Thu 29 Jan to 04:46 on Fri 30 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33833, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-01-31T01:34:28+08:00", "utc": "2037-01-30T17:34:28Z", "ms": 2116949667593.0088 }, "end": { "local": "2037-01-31T22:04:12+08:00", "utc": "2037-01-31T14:04:12Z", "ms": 2117023452268.4482 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-31T01:34:28+08:00", "utc": "2037-01-30T17:34:28Z", "ms": 2116949667593.0088 }, "end": { "local": "2037-01-31T22:04:12+08:00", "utc": "2037-01-31T14:04:12Z", "ms": 2117023452268.4482 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-30", "window": { "start": { "local": "2037-01-30T11:52:10+08:00", "utc": "2037-01-30T03:52:10Z", "ms": 2116900329890.8125 }, "end": { "local": "2037-01-30T12:40:10+08:00", "utc": "2037-01-30T04:40:10Z", "ms": 2116903209890.8125 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-01-31", "window": { "start": { "local": "2037-01-31T11:52:19+08:00", "utc": "2037-01-31T03:52:19Z", "ms": 2116986739027.875 }, "end": { "local": "2037-01-31T12:40:19+08:00", "utc": "2037-01-31T04:40:19Z", "ms": 2116989619027.875 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:34 on Sat 31 Jan to 22:04 on Sat 31 Jan.", "fact": "2037-01-30T17:34:28Z → 2037-01-31T14:04:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 30th, 11:52–12:40 on the 31st.", "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 30th and 48 of 48 on the 31st.", "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 33833 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Fuzhou, 2037: Saturday 31 January.", "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": "2037-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-31", "confidence": "determinate" } ], "quote": "In Fuzhou, Māghī Pūrṇimā 2037 falls on Saturday 31 January. Pūrṇimā runs from 01:34 on Sat 31 Jan to 22:04 on Sat 31 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-02-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34379, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-02-03T11:19:39+08:00", "utc": "2037-02-03T03:19:39Z", "ms": 2117243978537.8147 }, "end": { "local": "2037-02-04T08:12:33+08:00", "utc": "2037-02-04T00:12:33Z", "ms": 2117319153123.2856 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-03T11:19:39+08:00", "utc": "2037-02-03T03:19:39Z", "ms": 2117243978537.8147 }, "end": { "local": "2037-02-04T08:12:33+08:00", "utc": "2037-02-04T00:12:33Z", "ms": 2117319153123.2856 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-02-03", "window": { "start": { "local": "2037-02-03T20:52:37+08:00", "utc": "2037-02-03T12:52:37Z", "ms": 2117278357393.7793 }, "end": { "local": "2037-02-03T20:52:37+08:00", "utc": "2037-02-03T12:52:37Z", "ms": 2117278357393.7793 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-02-04", "window": { "start": { "local": "2037-02-04T21:56:10+08:00", "utc": "2037-02-04T13:56:10Z", "ms": 2117368570497.1238 }, "end": { "local": "2037-02-04T21:56:10+08:00", "utc": "2037-02-04T13:56:10Z", "ms": 2117368570497.1238 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:20 on Tue 3 Feb to 08:13 on Wed 4 Feb.", "fact": "2037-02-03T03:19:39Z → 2037-02-04T00:12:33Z" }, { "step": "kaala", "text": "Moonrise is at 20:53 on the 3rd and 21:56 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 34379 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Tuesday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Tuesday 3 February. Caturthī runs from 11:20 on Tue 3 Feb to 08:13 on Wed 4 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-02-10", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10830, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-02-10T02:19:21+08:00", "utc": "2037-02-09T18:19:21Z", "ms": 2117816361393.9404 }, "end": { "local": "2037-02-11T03:40:51+08:00", "utc": "2037-02-10T19:40:51Z", "ms": 2117907651208.2808 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-10T02:19:21+08:00", "utc": "2037-02-09T18:19:21Z", "ms": 2117816361393.9404 }, "end": { "local": "2037-02-11T03:40:51+08:00", "utc": "2037-02-10T19:40:51Z", "ms": 2117907651208.2808 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-02-10", "window": { "start": { "local": "2037-02-10T06:42:02+08:00", "utc": "2037-02-09T22:42:02Z", "ms": 2117832121751.679 }, "end": { "local": "2037-02-10T06:42:02+08:00", "utc": "2037-02-09T22:42:02Z", "ms": 2117832121751.679 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-02-11", "window": { "start": { "local": "2037-02-11T06:41:22+08:00", "utc": "2037-02-10T22:41:22Z", "ms": 2117918481513.9502 }, "end": { "local": "2037-02-11T06:41:22+08:00", "utc": "2037-02-10T22:41:22Z", "ms": 2117918481513.9502 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:19 on Tue 10 Feb to 03:41 on Wed 11 Feb.", "fact": "2037-02-09T18:19:21Z → 2037-02-10T19:40:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:42 on the 10th and 06:41 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 10830 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Fuzhou, 2037: Tuesday 10 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": "2037-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Vijayā Ekādaśī 2037 falls on Tuesday 10 February. Ekādaśī runs from 02:19 on Tue 10 Feb to 03:41 on Wed 11 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-02-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-02-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35812, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-02-12T05:32:06+08:00", "utc": "2037-02-11T21:32:06Z", "ms": 2118000726330.1282 }, "end": { "local": "2037-02-13T07:46:03+08:00", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-12T05:32:06+08:00", "utc": "2037-02-11T21:32:06Z", "ms": 2118000726330.1282 }, "end": { "local": "2037-02-13T07:46:03+08:00", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-02-11", "window": { "start": { "local": "2037-02-11T17:52:52+08:00", "utc": "2037-02-11T09:52:52Z", "ms": 2117958771967.0403 }, "end": { "local": "2037-02-11T19:35:14+08:00", "utc": "2037-02-11T11:35:14Z", "ms": 2117964914393.7524 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "2037-02-12", "window": { "start": { "local": "2037-02-12T17:53:33+08:00", "utc": "2037-02-12T09:53:33Z", "ms": 2118045212712.9207 }, "end": { "local": "2037-02-12T19:35:44+08:00", "utc": "2037-02-12T11:35:44Z", "ms": 2118051344049.0344 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:32 on Thu 12 Feb to 07:46 on Fri 13 Feb.", "fact": "2037-02-11T21:32:06Z → 2037-02-12T23:46:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:53–19:35 on the 11th, 17:54–19:36 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 102 minutes on the 11th and 102 of 102 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 35812 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Thursday 12 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": "2037-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 12 February. Trayodaśī runs from 05:32 on Thu 12 Feb to 07:46 on Fri 13 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-02-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25518, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-02-13T07:46:03+08:00", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "end": { "local": "2037-02-14T10:15:37+08:00", "utc": "2037-02-14T02:15:37Z", "ms": 2118190536573.5 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-13T07:46:03+08:00", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "end": { "local": "2037-02-14T10:15:37+08:00", "utc": "2037-02-14T02:15:37Z", "ms": 2118190536573.5 } }, "kaala": "nishita", "days": [ { "local_date": "2037-02-12", "window": { "start": { "local": "2037-02-12T23:52:45+08:00", "utc": "2037-02-12T15:52:45Z", "ms": 2118066765223.3472 }, "end": { "local": "2037-02-13T00:40:45+08:00", "utc": "2037-02-12T16:40:45Z", "ms": 2118069645223.3472 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-02-13", "window": { "start": { "local": "2037-02-13T23:52:44+08:00", "utc": "2037-02-13T15:52:44Z", "ms": 2118153163644.1963 }, "end": { "local": "2037-02-14T00:40:44+08:00", "utc": "2037-02-13T16:40:44Z", "ms": 2118156043644.1963 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:46 on Fri 13 Feb to 10:16 on Sat 14 Feb.", "fact": "2037-02-12T23:46:03Z → 2037-02-14T02:15:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:53–00:41 on the 12th, 23:53–00:41 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. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 25518 s" }, { "step": "ruling", "text": "Mahāśivarātri, Fuzhou, 2037: Friday 13 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": "2037-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahāśivarātri 2037 falls on Friday 13 February. Caturdaśī runs from 07:46 on Fri 13 Feb to 10:16 on Sat 14 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-02-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28822, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-02-18T20:41:11+08:00", "utc": "2037-02-18T12:41:11Z", "ms": 2118573671020.964 }, "end": { "local": "2037-02-19T22:52:42+08:00", "utc": "2037-02-19T14:52:42Z", "ms": 2118667961718.0393 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-18T20:41:11+08:00", "utc": "2037-02-18T12:41:11Z", "ms": 2118573671020.964 }, "end": { "local": "2037-02-19T22:52:42+08:00", "utc": "2037-02-19T14:52:42Z", "ms": 2118667961718.0393 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-02-18", "window": { "start": { "local": "2037-02-18T11:52:49+08:00", "utc": "2037-02-18T03:52:49Z", "ms": 2118541969242.4482 }, "end": { "local": "2037-02-18T12:40:49+08:00", "utc": "2037-02-18T04:40:49Z", "ms": 2118544849242.4482 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-02-19", "window": { "start": { "local": "2037-02-19T11:52:44+08:00", "utc": "2037-02-19T03:52:44Z", "ms": 2118628363893.2632 }, "end": { "local": "2037-02-19T12:40:44+08:00", "utc": "2037-02-19T04:40:44Z", "ms": 2118631243893.2632 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:41 on Wed 18 Feb to 22:53 on Thu 19 Feb.", "fact": "2037-02-18T12:41:11Z → 2037-02-19T14:52:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 18th, 11:53–12:41 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 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28822 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Thursday 19 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": "2037-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Thursday 19 February. Caturthī runs from 20:41 on Wed 18 Feb to 22:53 on Thu 19 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-02-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-02-26", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22425, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-02-26T00:15:33+08:00", "utc": "2037-02-25T16:15:33Z", "ms": 2119191332815.6406 }, "end": { "local": "2037-02-26T22:02:30+08:00", "utc": "2037-02-26T14:02:30Z", "ms": 2119269749573.2952 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-26T00:15:33+08:00", "utc": "2037-02-25T16:15:33Z", "ms": 2119191332815.6406 }, "end": { "local": "2037-02-26T22:02:30+08:00", "utc": "2037-02-26T14:02:30Z", "ms": 2119269749573.2952 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-02-26", "window": { "start": { "local": "2037-02-26T06:29:18+08:00", "utc": "2037-02-25T22:29:18Z", "ms": 2119213757636.227 }, "end": { "local": "2037-02-26T06:29:18+08:00", "utc": "2037-02-25T22:29:18Z", "ms": 2119213757636.227 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-02-27", "window": { "start": { "local": "2037-02-27T06:28:22+08:00", "utc": "2037-02-26T22:28:22Z", "ms": 2119300102465.5598 }, "end": { "local": "2037-02-27T06:28:22+08:00", "utc": "2037-02-26T22:28:22Z", "ms": 2119300102465.5598 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:16 on Thu 26 Feb to 22:02 on Thu 26 Feb.", "fact": "2037-02-25T16:15:33Z → 2037-02-26T14:02:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 26th and 06:28 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 22425 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Fuzhou, 2037: Thursday 26 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": "2037-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Āmalakī Ekādaśī 2037 falls on Thursday 26 February. Ekādaśī runs from 00:16 on Thu 26 Feb to 22:02 on Thu 26 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-02-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-02-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1734, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-02-27T19:13:15+08:00", "utc": "2037-02-27T11:13:15Z", "ms": 2119345995150.0208 }, "end": { "local": "2037-02-28T15:55:06+08:00", "utc": "2037-02-28T07:55:06Z", "ms": 2119420506114.0928 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-27T19:13:15+08:00", "utc": "2037-02-27T11:13:15Z", "ms": 2119345995150.0208 }, "end": { "local": "2037-02-28T15:55:06+08:00", "utc": "2037-02-28T07:55:06Z", "ms": 2119420506114.0928 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-02-27", "window": { "start": { "local": "2037-02-27T18:02:53+08:00", "utc": "2037-02-27T10:02:53Z", "ms": 2119341773004.6775 }, "end": { "local": "2037-02-27T19:42:09+08:00", "utc": "2037-02-27T11:42:09Z", "ms": 2119347729482.1692 } }, "covered_min": 29, "window_min": 99, "qualifies": true }, { "local_date": "2037-02-28", "window": { "start": { "local": "2037-02-28T18:03:27+08:00", "utc": "2037-02-28T10:03:27Z", "ms": 2119428206984.0696 }, "end": { "local": "2037-02-28T19:42:31+08:00", "utc": "2037-02-28T11:42:31Z", "ms": 2119434151389.9714 } }, "covered_min": 0, "window_min": 99, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:13 on Fri 27 Feb to 15:55 on Sat 28 Feb.", "fact": "2037-02-27T11:13:15Z → 2037-02-28T07:55:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:03–19:42 on the 27th, 18:03–19:43 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 29 of 99 minutes on the 27th and 0 of 99 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 1734 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Friday 27 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": "2037-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Friday 27 February. Trayodaśī runs from 19:13 on Fri 27 Feb to 15:55 on Sat 28 Feb and covers 29 of 99 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12462, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-01T12:16:49+08:00", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-03-01T12:16:49+08:00", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-03-01", "window": { "start": { "local": "2037-03-01T15:44:30+08:00", "utc": "2037-03-01T07:44:30Z", "ms": 2119506270470.129 }, "end": { "local": "2037-03-01T18:04:01+08:00", "utc": "2037-03-01T10:04:01Z", "ms": 2119514640580.5776 } }, "covered_min": 140, "window_min": 140, "qualifies": true }, { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T15:44:46+08:00", "utc": "2037-03-02T07:44:46Z", "ms": 2119592685612.18 }, "end": { "local": "2037-03-02T18:04:34+08:00", "utc": "2037-03-02T10:04:34Z", "ms": 2119601073809.0466 } }, "covered_min": 0, "window_min": 140, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:17 on Sun 1 Mar to 08:28 on Mon 2 Mar.", "fact": "2037-03-01T04:16:49Z → 2037-03-02T00:28:13Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:45–18:04 on the 1st, 15:45–18:05 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 140 of 140 minutes on the 1st and 0 of 140 on the 2nd.", "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 12462 s" }, { "step": "ruling", "text": "Holikā Dahana, Fuzhou, 2037: Sunday 1 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": "2037-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Holikā Dahana 2037 falls on Sunday 1 March. Pūrṇimā runs from 12:17 on Sun 1 Mar to 08:28 on Mon 2 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12462, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-01T12:16:49+08:00", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-03-01T12:16:49+08:00", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-03-01", "window": { "start": { "local": "2037-03-01T15:44:30+08:00", "utc": "2037-03-01T07:44:30Z", "ms": 2119506270470.129 }, "end": { "local": "2037-03-01T18:04:01+08:00", "utc": "2037-03-01T10:04:01Z", "ms": 2119514640580.5776 } }, "covered_min": 140, "window_min": 140, "qualifies": true }, { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T15:44:46+08:00", "utc": "2037-03-02T07:44:46Z", "ms": 2119592685612.18 }, "end": { "local": "2037-03-02T18:04:34+08:00", "utc": "2037-03-02T10:04:34Z", "ms": 2119601073809.0466 } }, "covered_min": 0, "window_min": 140, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2037-03-01", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:17 on Sun 1 Mar to 08:28 on Mon 2 Mar.", "fact": "2037-03-01T04:16:49Z → 2037-03-02T00:28:13Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:45–18:04 on the 1st, 15:45–18:05 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 140 of 140 minutes on the 1st and 0 of 140 on the 2nd.", "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 12462 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Sunday 1 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Fuzhou, 2037: Monday 2 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": "2037-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Holī 2037 falls on Monday 2 March. It is kept the day after Holikā Dahana, which falls on Sunday 1 March. Pūrṇimā runs from 12:17 on Sun 1 Mar to 08:28 on Mon 2 Mar and covers all of sāyāhna on the 1st.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-02", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 6287, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "end": { "local": "2037-03-03T04:39:48+08:00", "utc": "2037-03-02T20:39:48Z", "ms": 2119639188442.4778 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-02T08:28:13+08:00", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "end": { "local": "2037-03-03T04:39:48+08:00", "utc": "2037-03-02T20:39:48Z", "ms": 2119639188442.4778 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T06:25:33+08:00", "utc": "2037-03-01T22:25:33Z", "ms": 2119559132824.7126 }, "end": { "local": "2037-03-02T06:25:33+08:00", "utc": "2037-03-01T22:25:33Z", "ms": 2119559132824.7126 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-03-03", "window": { "start": { "local": "2037-03-03T06:24:35+08:00", "utc": "2037-03-02T22:24:35Z", "ms": 2119645475007.0566 }, "end": { "local": "2037-03-03T06:24:35+08:00", "utc": "2037-03-02T22:24:35Z", "ms": 2119645475007.0566 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:28 on Mon 2 Mar to 04:40 on Tue 3 Mar.", "fact": "2037-03-02T00:28:13Z → 2037-03-02T20:39:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:26 on the 2nd and 06:25 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: purvaviddha → tithi-day · margin 6287 s" }, { "step": "ruling", "text": "Vasantotsava, Fuzhou, 2037: Monday 2 March.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2037-03-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-02", "confidence": "boundary" } ], "quote": "In Fuzhou, Vasantotsava 2037 falls on Monday 2 March. Pratipadā runs from 08:28 on Mon 2 Mar to 04:40 on Tue 3 Mar, and is current at sunrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-03-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-04", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3965, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-03-04T21:46:40+08:00", "utc": "2037-03-04T13:46:40Z", "ms": 2119787199680.1367 }, "end": { "local": "2037-03-05T19:02:43+08:00", "utc": "2037-03-05T11:02:43Z", "ms": 2119863762993.938 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-04T21:46:40+08:00", "utc": "2037-03-04T13:46:40Z", "ms": 2119787199680.1367 }, "end": { "local": "2037-03-05T19:02:43+08:00", "utc": "2037-03-05T11:02:43Z", "ms": 2119863762993.938 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-03-04", "window": { "start": { "local": "2037-03-04T20:40:34+08:00", "utc": "2037-03-04T12:40:34Z", "ms": 2119783234489.091 }, "end": { "local": "2037-03-04T20:40:34+08:00", "utc": "2037-03-04T12:40:34Z", "ms": 2119783234489.091 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-03-05", "window": { "start": { "local": "2037-03-05T21:43:42+08:00", "utc": "2037-03-05T13:43:42Z", "ms": 2119873422475.4258 }, "end": { "local": "2037-03-05T21:43:42+08:00", "utc": "2037-03-05T13:43:42Z", "ms": 2119873422475.4258 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:47 on Wed 4 Mar to 19:03 on Thu 5 Mar.", "fact": "2037-03-04T13:46:40Z → 2037-03-05T11:02:43Z" }, { "step": "kaala", "text": "Moonrise is at 20:41 on the 4th and 21:44 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is not on the 5th.", "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 3965 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Wednesday 4 March.", "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": "2037-03-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-04", "confidence": "boundary" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Wednesday 4 March. Caturthī runs from 21:47 on Wed 4 Mar to 19:03 on Thu 5 Mar, and is current at moonrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-03-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9645, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-03-08T15:18:27+08:00", "utc": "2037-03-08T07:18:27Z", "ms": 2120109506830.799 }, "end": { "local": "2037-03-09T15:44:31+08:00", "utc": "2037-03-09T07:44:31Z", "ms": 2120197471479.3726 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-08T15:18:27+08:00", "utc": "2037-03-08T07:18:27Z", "ms": 2120109506830.799 }, "end": { "local": "2037-03-09T15:44:31+08:00", "utc": "2037-03-09T07:44:31Z", "ms": 2120197471479.3726 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-08", "window": { "start": { "local": "2037-03-08T11:49:42+08:00", "utc": "2037-03-08T03:49:42Z", "ms": 2120096982063.12 }, "end": { "local": "2037-03-08T12:37:42+08:00", "utc": "2037-03-08T04:37:42Z", "ms": 2120099862063.12 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-09", "window": { "start": { "local": "2037-03-09T11:49:27+08:00", "utc": "2037-03-09T03:49:27Z", "ms": 2120183367171.9197 }, "end": { "local": "2037-03-09T12:37:27+08:00", "utc": "2037-03-09T04:37:27Z", "ms": 2120186247171.9197 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:18 on Sun 8 Mar to 15:45 on Mon 9 Mar.", "fact": "2037-03-08T07:18:27Z → 2037-03-09T07:44:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 8th, 11:49–12:37 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9645 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Fuzhou, 2037: Monday 9 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": "2037-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Śītalāṣṭamī 2037 falls on Monday 9 March. Aṣṭamī runs from 15:18 on Sun 8 Mar to 15:45 on Mon 9 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-03-12", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32717, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-03-11T18:49:11+08:00", "utc": "2037-03-11T10:49:11Z", "ms": 2120381351428.6948 }, "end": { "local": "2037-03-12T21:09:13+08:00", "utc": "2037-03-12T13:09:13Z", "ms": 2120476152989.637 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-11T18:49:11+08:00", "utc": "2037-03-11T10:49:11Z", "ms": 2120381351428.6948 }, "end": { "local": "2037-03-12T21:09:13+08:00", "utc": "2037-03-12T13:09:13Z", "ms": 2120476152989.637 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-12", "window": { "start": { "local": "2037-03-12T06:15:32+08:00", "utc": "2037-03-11T22:15:32Z", "ms": 2120422532049.6401 }, "end": { "local": "2037-03-12T06:15:32+08:00", "utc": "2037-03-11T22:15:32Z", "ms": 2120422532049.6401 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-03-13", "window": { "start": { "local": "2037-03-13T06:14:30+08:00", "utc": "2037-03-12T22:14:30Z", "ms": 2120508869728.051 }, "end": { "local": "2037-03-13T06:14:30+08:00", "utc": "2037-03-12T22:14:30Z", "ms": 2120508869728.051 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:49 on Wed 11 Mar to 21:09 on Thu 12 Mar.", "fact": "2037-03-11T10:49:11Z → 2037-03-12T13:09:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:16 on the 12th and 06:14 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32717 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Fuzhou, 2037: Thursday 12 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": "2037-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Pāpamocanī Ekādaśī 2037 falls on Thursday 12 March. Ekādaśī runs from 18:49 on Wed 11 Mar to 21:09 on Thu 12 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-03-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14350, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-13T23:45:55+08:00", "utc": "2037-03-13T15:45:55Z", "ms": 2120571954642.7598 }, "end": { "local": "2037-03-15T02:28:20+08:00", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-13T23:45:55+08:00", "utc": "2037-03-13T15:45:55Z", "ms": 2120571954642.7598 }, "end": { "local": "2037-03-15T02:28:20+08:00", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-03-13", "window": { "start": { "local": "2037-03-13T18:10:19+08:00", "utc": "2037-03-13T10:10:19Z", "ms": 2120551819220.015 }, "end": { "local": "2037-03-13T19:46:44+08:00", "utc": "2037-03-13T11:46:44Z", "ms": 2120557604271.325 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2037-03-14", "window": { "start": { "local": "2037-03-14T18:10:49+08:00", "utc": "2037-03-14T10:10:49Z", "ms": 2120638249109.72 }, "end": { "local": "2037-03-14T19:47:02+08:00", "utc": "2037-03-14T11:47:02Z", "ms": 2120644021789.1313 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:46 on Fri 13 Mar to 02:28 on Sun 15 Mar.", "fact": "2037-03-13T15:45:55Z → 2037-03-14T18:28:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:47 on the 13th, 18:11–19:47 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 14350 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Saturday 14 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": "2037-03-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Saturday 14 March. Trayodaśī runs from 23:46 on Fri 13 Mar to 02:28 on Sun 15 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-03-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6764, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-03-15T02:28:20+08:00", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "end": { "local": "2037-03-16T05:07:24+08:00", "utc": "2037-03-15T21:07:24Z", "ms": 2120764044369.1772 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-15T02:28:20+08:00", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "end": { "local": "2037-03-16T05:07:24+08:00", "utc": "2037-03-15T21:07:24Z", "ms": 2120764044369.1772 } }, "kaala": "nishita", "days": [ { "local_date": "2037-03-14", "window": { "start": { "local": "2037-03-14T23:47:37+08:00", "utc": "2037-03-14T15:47:37Z", "ms": 2120658456657.5125 }, "end": { "local": "2037-03-15T00:35:37+08:00", "utc": "2037-03-14T16:35:37Z", "ms": 2120661336657.5125 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-15", "window": { "start": { "local": "2037-03-15T23:47:20+08:00", "utc": "2037-03-15T15:47:20Z", "ms": 2120744839923.797 }, "end": { "local": "2037-03-16T00:35:20+08:00", "utc": "2037-03-15T16:35:20Z", "ms": 2120747719923.797 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:28 on Sun 15 Mar to 05:07 on Mon 16 Mar.", "fact": "2037-03-14T18:28:20Z → 2037-03-15T21:07:24Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:48–00:36 on the 14th, 23:47–00:35 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 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6764 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Sunday 15 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Sunday 15 March. Caturdaśī runs from 02:28 on Sun 15 Mar to 05:07 on Mon 16 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-03-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7012, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-03-17T07:36:16+08:00", "utc": "2037-03-16T23:36:16Z", "ms": 2120859376271.6536 }, "end": { "local": "2037-03-18T09:50:08+08:00", "utc": "2037-03-18T01:50:08Z", "ms": 2120953808174.837 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-17T07:36:16+08:00", "utc": "2037-03-16T23:36:16Z", "ms": 2120859376271.6536 }, "end": { "local": "2037-03-18T09:50:08+08:00", "utc": "2037-03-18T01:50:08Z", "ms": 2120953808174.837 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-17", "window": { "start": { "local": "2037-03-17T11:47:18+08:00", "utc": "2037-03-17T03:47:18Z", "ms": 2120874437628.938 }, "end": { "local": "2037-03-17T12:35:18+08:00", "utc": "2037-03-17T04:35:18Z", "ms": 2120877317628.938 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-18", "window": { "start": { "local": "2037-03-18T11:47:00+08:00", "utc": "2037-03-18T03:47:00Z", "ms": 2120960820401.491 }, "end": { "local": "2037-03-18T12:35:00+08:00", "utc": "2037-03-18T04:35:00Z", "ms": 2120963700401.491 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 07:36 on Tue 17 Mar to 09:50 on Wed 18 Mar.", "fact": "2037-03-16T23:36:16Z → 2037-03-18T01:50:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 17th, 11:47–12:35 on the 18th.", "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 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7012 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Fuzhou, 2037: Tuesday 17 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": "2037-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Navarātrārambha (Caitra) (Chaitra Navratri) 2037 falls on Tuesday 17 March. Pratipadā runs from 07:36 on Tue 17 Mar to 09:50 on Wed 18 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-19", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 68, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-03-19T11:45:35+08:00", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-19T11:45:35+08:00", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-19", "window": { "start": { "local": "2037-03-19T11:46:43+08:00", "utc": "2037-03-19T03:46:43Z", "ms": 2121047203002.2656 }, "end": { "local": "2037-03-19T12:34:43+08:00", "utc": "2037-03-19T04:34:43Z", "ms": 2121050083002.2656 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:46:25+08:00", "utc": "2037-03-20T03:46:25Z", "ms": 2121133585448.6277 }, "end": { "local": "2037-03-20T12:34:25+08:00", "utc": "2037-03-20T04:34:25Z", "ms": 2121136465448.6277 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:46 on Thu 19 Mar to 13:20 on Fri 20 Mar.", "fact": "2037-03-19T03:45:35Z → 2037-03-20T05:19:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 19th, 11:46–12:34 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 68 s < 300 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Fuzhou, 2037: Thursday 19 March.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "2037-03-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-20", "confidence": "boundary" } ], "quote": "In Fuzhou, Gaurī Tṛtīyā (Gangaur) 2037 falls on Thursday 19 March. Tṛtīyā runs from 11:46 on Thu 19 Mar to 13:20 on Fri 20 Mar 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. It is 1 min 08 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-20", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 68, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-03-19T11:45:35+08:00", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-19T11:45:35+08:00", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-19", "window": { "start": { "local": "2037-03-19T11:46:43+08:00", "utc": "2037-03-19T03:46:43Z", "ms": 2121047203002.2656 }, "end": { "local": "2037-03-19T12:34:43+08:00", "utc": "2037-03-19T04:34:43Z", "ms": 2121050083002.2656 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:46:25+08:00", "utc": "2037-03-20T03:46:25Z", "ms": 2121133585448.6277 }, "end": { "local": "2037-03-20T12:34:25+08:00", "utc": "2037-03-20T04:34:25Z", "ms": 2121136465448.6277 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:46 on Thu 19 Mar to 13:20 on Fri 20 Mar.", "fact": "2037-03-19T03:45:35Z → 2037-03-20T05:19:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 19th, 11:46–12:34 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 68 s < 300 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Fuzhou, 2037: Friday 20 March.", "fact": "confidence: boundary (margin)" } ], "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": "2037-03-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-20", "confidence": "boundary" } ], "quote": "In Fuzhou, Saubhāgya Śayana Vrata 2037 falls on Friday 20 March. Tṛtīyā runs from 11:46 on Thu 19 Mar to 13:20 on Fri 20 Mar and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 1 min 08 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-03-21", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2722, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "end": { "local": "2037-03-21T14:29:56+08:00", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-20T13:19:47+08:00", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "end": { "local": "2037-03-21T14:29:56+08:00", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:46:25+08:00", "utc": "2037-03-20T03:46:25Z", "ms": 2121133585448.6277 }, "end": { "local": "2037-03-20T12:34:25+08:00", "utc": "2037-03-20T04:34:25Z", "ms": 2121136465448.6277 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-21", "window": { "start": { "local": "2037-03-21T11:46:08+08:00", "utc": "2037-03-21T03:46:08Z", "ms": 2121219967758.0637 }, "end": { "local": "2037-03-21T12:34:08+08:00", "utc": "2037-03-21T04:34:08Z", "ms": 2121222847758.0637 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:20 on Fri 20 Mar to 14:30 on Sat 21 Mar.", "fact": "2037-03-20T05:19:47Z → 2037-03-21T06:29:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 20th, 11:46–12:34 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2722 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Saturday 21 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": "2037-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-21", "confidence": "boundary" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Saturday 21 March. Caturthī runs from 13:20 on Fri 20 Mar to 14:30 on Sat 21 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-03-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6948, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-03-21T14:29:56+08:00", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "end": { "local": "2037-03-22T15:12:52+08:00", "utc": "2037-03-22T07:12:52Z", "ms": 2121318771974.197 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-21T14:29:56+08:00", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "end": { "local": "2037-03-22T15:12:52+08:00", "utc": "2037-03-22T07:12:52Z", "ms": 2121318771974.197 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-21", "window": { "start": { "local": "2037-03-21T11:46:08+08:00", "utc": "2037-03-21T03:46:08Z", "ms": 2121219967758.0637 }, "end": { "local": "2037-03-21T12:34:08+08:00", "utc": "2037-03-21T04:34:08Z", "ms": 2121222847758.0637 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-22", "window": { "start": { "local": "2037-03-22T11:45:50+08:00", "utc": "2037-03-22T03:45:50Z", "ms": 2121306349948.248 }, "end": { "local": "2037-03-22T12:33:50+08:00", "utc": "2037-03-22T04:33:50Z", "ms": 2121309229948.248 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:30 on Sat 21 Mar to 15:13 on Sun 22 Mar.", "fact": "2037-03-21T06:29:56Z → 2037-03-22T07:12:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 21st, 11:46–12:34 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6948 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Fuzhou, 2037: Sunday 22 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": "2037-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Lakṣmī Pañcamī 2037 falls on Sunday 22 March. Pañcamī runs from 14:30 on Sat 21 Mar to 15:13 on Sun 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5606, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-03-24T15:03:47+08:00", "utc": "2037-03-24T07:03:47Z", "ms": 2121491027229.1455 }, "end": { "local": "2037-03-25T14:06:21+08:00", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-24T15:03:47+08:00", "utc": "2037-03-24T07:03:47Z", "ms": 2121491027229.1455 }, "end": { "local": "2037-03-25T14:06:21+08:00", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-24", "window": { "start": { "local": "2037-03-24T11:45:14+08:00", "utc": "2037-03-24T03:45:14Z", "ms": 2121479114043.084 }, "end": { "local": "2037-03-24T12:33:14+08:00", "utc": "2037-03-24T04:33:14Z", "ms": 2121481994043.084 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-25", "window": { "start": { "local": "2037-03-25T11:44:56+08:00", "utc": "2037-03-25T03:44:56Z", "ms": 2121565495984.962 }, "end": { "local": "2037-03-25T12:32:56+08:00", "utc": "2037-03-25T04:32:56Z", "ms": 2121568375984.962 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:04 on Tue 24 Mar to 14:06 on Wed 25 Mar.", "fact": "2037-03-24T07:03:47Z → 2037-03-25T06:06:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 24th, 11:45–12:33 on the 25th.", "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 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 5606 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Fuzhou, 2037: Wednesday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Bhavānī Utpatti 2037 falls on Wednesday 25 March. Aṣṭamī runs from 15:04 on Tue 24 Mar to 14:06 on Wed 25 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-26", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 27, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-03-25T14:06:21+08:00", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "end": { "local": "2037-03-26T12:32:11+08:00", "utc": "2037-03-26T04:32:11Z", "ms": 2121654731154.903 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-25T14:06:21+08:00", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "end": { "local": "2037-03-26T12:32:11+08:00", "utc": "2037-03-26T04:32:11Z", "ms": 2121654731154.903 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-25", "window": { "start": { "local": "2037-03-25T11:44:56+08:00", "utc": "2037-03-25T03:44:56Z", "ms": 2121565495984.962 }, "end": { "local": "2037-03-25T12:32:56+08:00", "utc": "2037-03-25T04:32:56Z", "ms": 2121568375984.962 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-26", "window": { "start": { "local": "2037-03-26T11:44:38+08:00", "utc": "2037-03-26T03:44:38Z", "ms": 2121651877882.3428 }, "end": { "local": "2037-03-26T12:32:38+08:00", "utc": "2037-03-26T04:32:38Z", "ms": 2121654757882.3428 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 14:06 on Wed 25 Mar to 12:32 on Thu 26 Mar.", "fact": "2037-03-25T06:06:21Z → 2037-03-26T04:32:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 25th, 11:45–12:33 on the 26th.", "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 25th and 48 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: unstated → only-day · margin 27 s < 300 s" }, { "step": "ruling", "text": "Rāma Navamī, Fuzhou, 2037: Thursday 26 March.", "fact": "confidence: boundary (margin)" } ], "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": "2037-03-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Rāma Navamī 2037 falls on Thursday 26 March. Navamī runs from 14:06 on Wed 25 Mar to 12:32 on Thu 26 Mar and covers all of madhyāhna that midday. It is 0 min 27 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-03-28", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6146, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-03-27T10:22:33+08:00", "utc": "2037-03-27T02:22:33Z", "ms": 2121733353463.2395 }, "end": { "local": "2037-03-28T07:40:58+08:00", "utc": "2037-03-27T23:40:58Z", "ms": 2121810058329.32 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-27T10:22:33+08:00", "utc": "2037-03-27T02:22:33Z", "ms": 2121733353463.2395 }, "end": { "local": "2037-03-28T07:40:58+08:00", "utc": "2037-03-27T23:40:58Z", "ms": 2121810058329.32 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-27", "window": { "start": { "local": "2037-03-27T05:59:37+08:00", "utc": "2037-03-26T21:59:37Z", "ms": 2121717576934.2725 }, "end": { "local": "2037-03-27T05:59:37+08:00", "utc": "2037-03-26T21:59:37Z", "ms": 2121717576934.2725 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-03-28", "window": { "start": { "local": "2037-03-28T05:58:33+08:00", "utc": "2037-03-27T21:58:33Z", "ms": 2121803912729.5757 }, "end": { "local": "2037-03-28T05:58:33+08:00", "utc": "2037-03-27T21:58:33Z", "ms": 2121803912729.5757 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:23 on Fri 27 Mar to 07:41 on Sat 28 Mar.", "fact": "2037-03-27T02:22:33Z → 2037-03-27T23:40:58Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 27th and 05:59 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is 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 6146 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Fuzhou, 2037: Saturday 28 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": "2037-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Kāmadā Ekādaśī 2037 falls on Saturday 28 March. Ekādaśī runs from 10:23 on Fri 27 Mar to 07:41 on Sat 28 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-03-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25840, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-29T04:33:04+08:00", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-29T04:33:04+08:00", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T11:43:44+08:00", "utc": "2037-03-29T03:43:44Z", "ms": 2121911023517.452 }, "end": { "local": "2037-03-29T12:31:44+08:00", "utc": "2037-03-29T04:31:44Z", "ms": 2121913903517.452 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-30", "window": { "start": { "local": "2037-03-30T11:43:25+08:00", "utc": "2037-03-30T03:43:25Z", "ms": 2121997405452.211 }, "end": { "local": "2037-03-30T12:31:25+08:00", "utc": "2037-03-30T04:31:25Z", "ms": 2122000285452.211 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:33 on Sun 29 Mar to 01:06 on Mon 30 Mar.", "fact": "2037-03-28T20:33:04Z → 2037-03-29T17:06:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 29th, 11:43–12:31 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī 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 25840 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Fuzhou, 2037: Sunday 29 March.", "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": "2037-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Anaṅga Trayodaśī 2037 falls on Sunday 29 March. Trayodaśī runs from 04:33 on Sun 29 Mar to 01:06 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-03-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18915, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-29T04:33:04+08:00", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-29T04:33:04+08:00", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-03-28", "window": { "start": { "local": "2037-03-28T18:17:31+08:00", "utc": "2037-03-28T10:17:31Z", "ms": 2121848250523.432 }, "end": { "local": "2037-03-28T19:50:50+08:00", "utc": "2037-03-28T11:50:50Z", "ms": 2121853850268.4958 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T18:17:58+08:00", "utc": "2037-03-29T10:17:58Z", "ms": 2121934678423.4927 }, "end": { "local": "2037-03-29T19:51:06+08:00", "utc": "2037-03-29T11:51:06Z", "ms": 2121940265914.9893 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:33 on Sun 29 Mar to 01:06 on Mon 30 Mar.", "fact": "2037-03-28T20:33:04Z → 2037-03-29T17:06:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:51 on the 28th, 18:18–19:51 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 93 minutes on the 28th and 93 of 93 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 18915 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Sunday 29 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": "2037-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Sunday 29 March. Trayodaśī runs from 04:33 on Sun 29 Mar to 01:06 on Mon 30 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-03-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32303, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "end": { "local": "2037-03-30T21:29:49+08:00", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-30T01:06:21+08:00", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "end": { "local": "2037-03-30T21:29:49+08:00", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T11:43:44+08:00", "utc": "2037-03-29T03:43:44Z", "ms": 2121911023517.452 }, "end": { "local": "2037-03-29T12:31:44+08:00", "utc": "2037-03-29T04:31:44Z", "ms": 2121913903517.452 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-30", "window": { "start": { "local": "2037-03-30T11:43:25+08:00", "utc": "2037-03-30T03:43:25Z", "ms": 2121997405452.211 }, "end": { "local": "2037-03-30T12:31:25+08:00", "utc": "2037-03-30T04:31:25Z", "ms": 2122000285452.211 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:06 on Mon 30 Mar to 21:30 on Mon 30 Mar.", "fact": "2037-03-29T17:06:21Z → 2037-03-30T13:29:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 29th, 11:43–12:31 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32303 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Fuzhou, 2037: Monday 30 March.", "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": "2037-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-30", "confidence": "determinate" } ], "quote": "In Fuzhou, Viṣṇudamanaka Caturdaśī 2037 falls on Monday 30 March. Caturdaśī runs from 01:06 on Mon 30 Mar to 21:30 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19348, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-30T21:29:49+08:00", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "end": { "local": "2037-03-31T17:53:35+08:00", "utc": "2037-03-31T09:53:35Z", "ms": 2122106015441.342 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-30T21:29:49+08:00", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "end": { "local": "2037-03-31T17:53:35+08:00", "utc": "2037-03-31T09:53:35Z", "ms": 2122106015441.342 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-30", "window": { "start": { "local": "2037-03-30T11:43:25+08:00", "utc": "2037-03-30T03:43:25Z", "ms": 2121997405452.211 }, "end": { "local": "2037-03-30T12:31:25+08:00", "utc": "2037-03-30T04:31:25Z", "ms": 2122000285452.211 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-31", "window": { "start": { "local": "2037-03-31T11:43:07+08:00", "utc": "2037-03-31T03:43:07Z", "ms": 2122083787455.1687 }, "end": { "local": "2037-03-31T12:31:07+08:00", "utc": "2037-03-31T04:31:07Z", "ms": 2122086667455.1687 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:30 on Mon 30 Mar to 17:54 on Tue 31 Mar.", "fact": "2037-03-30T13:29:49Z → 2037-03-31T09:53:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 30th, 11:43–12:31 on the 31st.", "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 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19348 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Fuzhou, 2037: Tuesday 31 March.", "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": "2037-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-31", "confidence": "determinate" } ], "quote": "In Fuzhou, Caitrī Pūrṇimā 2037 falls on Tuesday 31 March. Pūrṇimā runs from 21:30 on Mon 30 Mar to 17:54 on Tue 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-04-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34611, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-04-03T08:54:44+08:00", "utc": "2037-04-03T00:54:44Z", "ms": 2122332884210.5337 }, "end": { "local": "2037-04-04T07:06:02+08:00", "utc": "2037-04-03T23:06:02Z", "ms": 2122412761943.7085 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-03T08:54:44+08:00", "utc": "2037-04-03T00:54:44Z", "ms": 2122332884210.5337 }, "end": { "local": "2037-04-04T07:06:02+08:00", "utc": "2037-04-03T23:06:02Z", "ms": 2122412761943.7085 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-04-02", "window": { "start": { "local": "2037-04-02T20:26:36+08:00", "utc": "2037-04-02T12:26:36Z", "ms": 2122287996054.2434 }, "end": { "local": "2037-04-02T20:26:36+08:00", "utc": "2037-04-02T12:26:36Z", "ms": 2122287996054.2434 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-03", "window": { "start": { "local": "2037-04-03T21:29:11+08:00", "utc": "2037-04-03T13:29:11Z", "ms": 2122378150765.4338 }, "end": { "local": "2037-04-03T21:29:11+08:00", "utc": "2037-04-03T13:29:11Z", "ms": 2122378150765.4338 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:55 on Fri 3 Apr to 07:06 on Sat 4 Apr.", "fact": "2037-04-03T00:54:44Z → 2037-04-03T23:06:02Z" }, { "step": "kaala", "text": "Moonrise is at 20:27 on the 2nd and 21:29 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34611 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Friday 3 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": "2037-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Friday 3 April. Caturthī runs from 08:55 on Fri 3 Apr to 07:06 on Sat 4 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-04-11", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25838, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-04-10T12:55:35+08:00", "utc": "2037-04-10T04:55:35Z", "ms": 2122952135058.2783 }, "end": { "local": "2037-04-11T15:35:29+08:00", "utc": "2037-04-11T07:35:29Z", "ms": 2123048128642.569 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-10T12:55:35+08:00", "utc": "2037-04-10T04:55:35Z", "ms": 2122952135058.2783 }, "end": { "local": "2037-04-11T15:35:29+08:00", "utc": "2037-04-11T07:35:29Z", "ms": 2123048128642.569 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-04-10", "window": { "start": { "local": "2037-04-10T05:44:57+08:00", "utc": "2037-04-09T21:44:57Z", "ms": 2122926296761.8818 }, "end": { "local": "2037-04-10T05:44:57+08:00", "utc": "2037-04-09T21:44:57Z", "ms": 2122926296761.8818 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-11", "window": { "start": { "local": "2037-04-11T05:43:56+08:00", "utc": "2037-04-10T21:43:56Z", "ms": 2123012636419.0237 }, "end": { "local": "2037-04-11T05:43:56+08:00", "utc": "2037-04-10T21:43:56Z", "ms": 2123012636419.0237 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:56 on Fri 10 Apr to 15:35 on Sat 11 Apr.", "fact": "2037-04-10T04:55:35Z → 2037-04-11T07:35:29Z" }, { "step": "kaala", "text": "Sunrise is at 05:45 on the 10th and 05:44 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 25838 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Fuzhou, 2037: Saturday 11 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": "2037-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Varūthinī Ekādaśī 2037 falls on Saturday 11 April. Ekādaśī runs from 12:56 on Fri 10 Apr to 15:35 on Sat 11 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-04-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-12", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 813, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-04-12T18:11:00+08:00", "utc": "2037-04-12T10:11:00Z", "ms": 2123143860356.1953 }, "end": { "local": "2037-04-13T20:32:03+08:00", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-12T18:11:00+08:00", "utc": "2037-04-12T10:11:00Z", "ms": 2123143860356.1953 }, "end": { "local": "2037-04-13T20:32:03+08:00", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-12", "window": { "start": { "local": "2037-04-12T18:24:33+08:00", "utc": "2037-04-12T10:24:33Z", "ms": 2123144673248.7437 }, "end": { "local": "2037-04-12T19:54:52+08:00", "utc": "2037-04-12T11:54:52Z", "ms": 2123150092439.8044 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T18:25:02+08:00", "utc": "2037-04-13T10:25:02Z", "ms": 2123231102220.4045 }, "end": { "local": "2037-04-13T19:55:10+08:00", "utc": "2037-04-13T11:55:10Z", "ms": 2123236509702.224 } }, "covered_min": 90, "window_min": 90, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:11 on Sun 12 Apr to 20:32 on Mon 13 Apr.", "fact": "2037-04-12T10:11:00Z → 2037-04-13T12:32:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:25–19:55 on the 12th, 18:25–19:55 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 90 of 90 minutes on the 12th and 90 of 90 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 813 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Sunday 12 April.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-12", "confidence": "boundary" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Sunday 12 April. Trayodaśī runs from 18:11 on Sun 12 Apr to 20:32 on Mon 13 Apr and covers all of pradoṣa that evening. It also reaches the next evening for 90 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/fuzhou/festivals/2037/pradosha-vrata?on=2037-04-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-04-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4003, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-04-13T20:32:03+08:00", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "end": { "local": "2037-04-14T22:32:03+08:00", "utc": "2037-04-14T14:32:03Z", "ms": 2123332322560.2368 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-13T20:32:03+08:00", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "end": { "local": "2037-04-14T22:32:03+08:00", "utc": "2037-04-14T14:32:03Z", "ms": 2123332322560.2368 } }, "kaala": "nishita", "days": [ { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T23:39:00+08:00", "utc": "2037-04-13T15:39:00Z", "ms": 2123249940277.2278 }, "end": { "local": "2037-04-14T00:27:00+08:00", "utc": "2037-04-13T16:27:00Z", "ms": 2123252820277.2278 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-14", "window": { "start": { "local": "2037-04-14T23:38:46+08:00", "utc": "2037-04-14T15:38:46Z", "ms": 2123336325681.1094 }, "end": { "local": "2037-04-15T00:26:46+08:00", "utc": "2037-04-14T16:26:46Z", "ms": 2123339205681.1094 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:32 on Mon 13 Apr to 22:32 on Tue 14 Apr.", "fact": "2037-04-13T12:32:03Z → 2037-04-14T14:32:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:39–00:27 on the 13th, 23:39–00:27 on the 14th.", "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 13th and 0 of 48 on the 14th.", "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 4003 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Monday 13 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": "2037-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Monday 13 April. Caturdaśī runs from 20:32 on Mon 13 Apr to 22:32 on Tue 14 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-04-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7222, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2037-04-14T07:41:20+08:00", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 }, "end": { "local": "2037-05-15T04:30:54+08:00", "utc": "2037-05-14T20:30:54Z", "ms": 2125945853812.3438 } }, "span": { "of": "transit", "start": { "local": "2037-04-14T07:41:20+08:00", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 }, "end": { "local": "2037-04-14T07:41:20+08:00", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 } }, "kaala": "day", "days": [ { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T05:41:57+08:00", "utc": "2037-04-12T21:41:57Z", "ms": 2123185317181.7002 }, "end": { "local": "2037-04-14T05:40:58+08:00", "utc": "2037-04-13T21:40:58Z", "ms": 2123271658334.051 } }, "covered_min": 0, "window_min": 1439, "qualifies": false }, { "local_date": "2037-04-14", "window": { "start": { "local": "2037-04-14T05:40:58+08:00", "utc": "2037-04-13T21:40:58Z", "ms": 2123271658334.051 }, "end": { "local": "2037-04-15T05:40:00+08:00", "utc": "2037-04-14T21:40:00Z", "ms": 2123358000030.8975 } }, "covered_min": 1, "window_min": 1439, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 07:41 on Tue 14 Apr.", "fact": "2037-04-13T23:41:20Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:42 on the 13th, and from 05:41 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 7222 s" }, { "step": "ruling", "text": "Vaiśākhī, Fuzhou, 2037: Tuesday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2037-04-14", "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 Fuzhou, Vaiśākhī 2037 falls on Tuesday 14 April. The Sun enters Meṣa at 07:41 on Tue 14 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11382, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-04-18T02:04:18+08:00", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-18T02:04:18+08:00", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-04-18", "window": { "start": { "local": "2037-04-18T05:37:09+08:00", "utc": "2037-04-17T21:37:09Z", "ms": 2123617028610.2107 }, "end": { "local": "2037-04-18T09:53:55+08:00", "utc": "2037-04-18T01:53:55Z", "ms": 2123632435476.6404 } }, "covered_min": 257, "window_min": 257, "qualifies": true }, { "local_date": "2037-04-19", "window": { "start": { "local": "2037-04-19T05:36:13+08:00", "utc": "2037-04-18T21:36:13Z", "ms": 2123703372705.4177 }, "end": { "local": "2037-04-19T09:53:28+08:00", "utc": "2037-04-19T01:53:28Z", "ms": 2123718808150.5366 } }, "covered_min": 0, "window_min": 257, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:04 on Sat 18 Apr to 02:27 on Sun 19 Apr.", "fact": "2037-04-17T18:04:18Z → 2037-04-18T18:26:31Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:37–09:54 on the 18th, 05:36–09:53 on the 19th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 257 of 257 minutes on the 18th and 0 of 257 on the 19th.", "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 11382 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Fuzhou, 2037: Saturday 18 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": "2037-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Akṣaya Tṛtīyā 2037 falls on Saturday 18 April. Tṛtīyā runs from 02:04 on Sat 18 Apr to 02:27 on Sun 19 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22078, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-04-18T02:04:18+08:00", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-18T02:04:18+08:00", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-17", "window": { "start": { "local": "2037-04-17T18:27:00+08:00", "utc": "2037-04-17T10:27:00Z", "ms": 2123576819522.7595 }, "end": { "local": "2037-04-17T19:56:21+08:00", "utc": "2037-04-17T11:56:21Z", "ms": 2123582180734.4197 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "2037-04-18", "window": { "start": { "local": "2037-04-18T18:27:29+08:00", "utc": "2037-04-18T10:27:29Z", "ms": 2123663249209.4995 }, "end": { "local": "2037-04-18T19:56:39+08:00", "utc": "2037-04-18T11:56:39Z", "ms": 2123668599008.9553 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:04 on Sat 18 Apr to 02:27 on Sun 19 Apr.", "fact": "2037-04-17T18:04:18Z → 2037-04-18T18:26:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–19:56 on the 17th, 18:27–19:57 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 89 minutes on the 17th and 89 of 89 on the 18th.", "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 22078 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Fuzhou, 2037: Saturday 18 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": "2037-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Paraśurāma Jayantī 2037 falls on Saturday 18 April. Tṛtīyā runs from 02:04 on Sat 18 Apr to 02:27 on Sun 19 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-04-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33095, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "end": { "local": "2037-04-20T02:25:28+08:00", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-19T02:26:31+08:00", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "end": { "local": "2037-04-20T02:25:28+08:00", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-19", "window": { "start": { "local": "2037-04-19T11:38:06+08:00", "utc": "2037-04-19T03:38:06Z", "ms": 2123725085873.096 }, "end": { "local": "2037-04-19T12:26:06+08:00", "utc": "2037-04-19T04:26:06Z", "ms": 2123727965873.096 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-20", "window": { "start": { "local": "2037-04-20T11:37:53+08:00", "utc": "2037-04-20T03:37:53Z", "ms": 2123811473234.891 }, "end": { "local": "2037-04-20T12:25:53+08:00", "utc": "2037-04-20T04:25:53Z", "ms": 2123814353234.891 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:27 on Sun 19 Apr to 02:25 on Mon 20 Apr.", "fact": "2037-04-18T18:26:31Z → 2037-04-19T18:25:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 19th, 11:38–12:26 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33095 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Sunday 19 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": "2037-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Sunday 19 April. Caturthī runs from 02:27 on Sun 19 Apr to 02:25 on Mon 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-04-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33146, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-04-20T02:25:28+08:00", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "end": { "local": "2037-04-21T02:00:57+08:00", "utc": "2037-04-20T18:00:57Z", "ms": 2123863257470.711 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-20T02:25:28+08:00", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "end": { "local": "2037-04-21T02:00:57+08:00", "utc": "2037-04-20T18:00:57Z", "ms": 2123863257470.711 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-20", "window": { "start": { "local": "2037-04-20T11:37:53+08:00", "utc": "2037-04-20T03:37:53Z", "ms": 2123811473234.891 }, "end": { "local": "2037-04-20T12:25:53+08:00", "utc": "2037-04-20T04:25:53Z", "ms": 2123814353234.891 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-21", "window": { "start": { "local": "2037-04-21T11:37:41+08:00", "utc": "2037-04-21T03:37:41Z", "ms": 2123897861005.3416 }, "end": { "local": "2037-04-21T12:25:41+08:00", "utc": "2037-04-21T04:25:41Z", "ms": 2123900741005.3416 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:25 on Mon 20 Apr to 02:01 on Tue 21 Apr.", "fact": "2037-04-19T18:25:28Z → 2037-04-20T18:00:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 20th, 11:38–12:26 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33146 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Fuzhou, 2037: Monday 20 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": "2037-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Śaṅkara Jayantī 2037 falls on Monday 20 April. Pañcamī runs from 02:25 on Mon 20 Apr to 02:01 on Tue 21 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37516, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-04-22T01:12:13+08:00", "utc": "2037-04-21T17:12:13Z", "ms": 2123946732938.9707 }, "end": { "local": "2037-04-22T23:58:14+08:00", "utc": "2037-04-22T15:58:14Z", "ms": 2124028694389.3872 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-22T01:12:13+08:00", "utc": "2037-04-21T17:12:13Z", "ms": 2123946732938.9707 }, "end": { "local": "2037-04-22T23:58:14+08:00", "utc": "2037-04-22T15:58:14Z", "ms": 2124028694389.3872 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-22", "window": { "start": { "local": "2037-04-22T11:37:29+08:00", "utc": "2037-04-22T03:37:29Z", "ms": 2123984249194.603 }, "end": { "local": "2037-04-22T12:25:29+08:00", "utc": "2037-04-22T04:25:29Z", "ms": 2123987129194.603 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-23", "window": { "start": { "local": "2037-04-23T11:37:18+08:00", "utc": "2037-04-23T03:37:18Z", "ms": 2124070637813.0818 }, "end": { "local": "2037-04-23T12:25:18+08:00", "utc": "2037-04-23T04:25:18Z", "ms": 2124073517813.0818 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 01:12 on Wed 22 Apr to 23:58 on Wed 22 Apr.", "fact": "2037-04-21T17:12:13Z → 2037-04-22T15:58:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 22nd, 11:37–12:25 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37516 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Fuzhou, 2037: Wednesday 22 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": "2037-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṅgotpatti (Ganga Saptami) 2037 falls on Wednesday 22 April. Saptamī runs from 01:12 on Wed 22 Apr to 23:58 on Wed 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-04-26", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34060, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-04-25T17:45:10+08:00", "utc": "2037-04-25T09:45:10Z", "ms": 2124265509823.8152 }, "end": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-25T17:45:10+08:00", "utc": "2037-04-25T09:45:10Z", "ms": 2124265509823.8152 }, "end": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-04-25", "window": { "start": { "local": "2037-04-25T05:30:52+08:00", "utc": "2037-04-24T21:30:52Z", "ms": 2124221451775.1455 }, "end": { "local": "2037-04-25T05:30:52+08:00", "utc": "2037-04-24T21:30:52Z", "ms": 2124221451775.1455 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T05:30:01+08:00", "utc": "2037-04-25T21:30:01Z", "ms": 2124307800915.7373 }, "end": { "local": "2037-04-26T05:30:01+08:00", "utc": "2037-04-25T21:30:01Z", "ms": 2124307800915.7373 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:45 on Sat 25 Apr to 14:58 on Sun 26 Apr.", "fact": "2037-04-25T09:45:10Z → 2037-04-26T06:57:41Z" }, { "step": "kaala", "text": "Sunrise is at 05:31 on the 25th and 05:30 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 34060 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Fuzhou, 2037: Sunday 26 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": "2037-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Mohinī Ekādaśī 2037 falls on Sunday 26 April. Ekādaśī runs from 17:45 on Sat 25 Apr to 14:58 on Sun 26 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1208, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T11:36:46+08:00", "utc": "2037-04-26T03:36:46Z", "ms": 2124329806355.679 }, "end": { "local": "2037-04-26T12:24:46+08:00", "utc": "2037-04-26T04:24:46Z", "ms": 2124332686355.679 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T11:36:37+08:00", "utc": "2037-04-27T03:36:37Z", "ms": 2124416196806.3389 }, "end": { "local": "2037-04-27T12:24:37+08:00", "utc": "2037-04-27T04:24:37Z", "ms": 2124419076806.3389 } }, "covered_min": 20, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:58 on Sun 26 Apr to 11:57 on Mon 27 Apr.", "fact": "2037-04-26T06:57:41Z → 2037-04-27T03:56:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 26th, 11:37–12:25 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 20 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 1208 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Fuzhou, 2037: Monday 27 April.", "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": "2037-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Paraśurāma Dvādaśī 2037 falls on Monday 27 April. Dvādaśī runs from 14:58 on Sun 26 Apr to 11:57 on Mon 27 Apr and covers 20 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1208, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-26T14:57:41+08:00", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T11:36:46+08:00", "utc": "2037-04-26T03:36:46Z", "ms": 2124329806355.679 }, "end": { "local": "2037-04-26T12:24:46+08:00", "utc": "2037-04-26T04:24:46Z", "ms": 2124332686355.679 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T11:36:37+08:00", "utc": "2037-04-27T03:36:37Z", "ms": 2124416196806.3389 }, "end": { "local": "2037-04-27T12:24:37+08:00", "utc": "2037-04-27T04:24:37Z", "ms": 2124419076806.3389 } }, "covered_min": 20, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:58 on Sun 26 Apr to 11:57 on Mon 27 Apr.", "fact": "2037-04-26T06:57:41Z → 2037-04-27T03:56:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 26th, 11:37–12:25 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 20 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 1208 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Fuzhou, 2037: Monday 27 April.", "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": "2037-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Rukmiṇī Dvādaśī 2037 falls on Monday 27 April. Dvādaśī runs from 14:58 on Sun 26 Apr to 11:57 on Mon 27 Apr and covers 20 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-04-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23717, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "end": { "local": "2037-04-28T08:49:50+08:00", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-27T11:56:45+08:00", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "end": { "local": "2037-04-28T08:49:50+08:00", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T18:32:03+08:00", "utc": "2037-04-27T10:32:03Z", "ms": 2124441122741.008 }, "end": { "local": "2037-04-27T19:59:33+08:00", "utc": "2037-04-27T11:59:33Z", "ms": 2124446373264.631 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "2037-04-28", "window": { "start": { "local": "2037-04-28T18:32:34+08:00", "utc": "2037-04-28T10:32:34Z", "ms": 2124527553826.2012 }, "end": { "local": "2037-04-28T19:59:54+08:00", "utc": "2037-04-28T11:59:54Z", "ms": 2124532793760.131 } }, "covered_min": 0, "window_min": 87, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:57 on Mon 27 Apr to 08:50 on Tue 28 Apr.", "fact": "2037-04-27T03:56:45Z → 2037-04-28T00:49:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:00 on the 27th, 18:33–20:00 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 88 of 88 minutes on the 27th and 0 of 87 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 23717 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Monday 27 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": "2037-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Monday 27 April. Trayodaśī runs from 11:57 on Mon 27 Apr to 08:50 on Tue 28 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34963, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-04-28T08:49:50+08:00", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "end": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-28T08:49:50+08:00", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "end": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-28", "window": { "start": { "local": "2037-04-28T18:32:34+08:00", "utc": "2037-04-28T10:32:34Z", "ms": 2124527553826.2012 }, "end": { "local": "2037-04-28T19:59:54+08:00", "utc": "2037-04-28T11:59:54Z", "ms": 2124532793760.131 } }, "covered_min": 87, "window_min": 87, "qualifies": true }, { "local_date": "2037-04-29", "window": { "start": { "local": "2037-04-29T18:33:05+08:00", "utc": "2037-04-29T10:33:05Z", "ms": 2124613985052.9966 }, "end": { "local": "2037-04-29T20:00:14+08:00", "utc": "2037-04-29T12:00:14Z", "ms": 2124619214497.1885 } }, "covered_min": 0, "window_min": 87, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:50 on Tue 28 Apr to 05:46 on Wed 29 Apr.", "fact": "2037-04-28T00:49:50Z → 2037-04-28T21:45:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:33–20:00 on the 28th, 18:33–20:00 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 87 of 87 minutes on the 28th and 0 of 87 on the 29th.", "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 34963 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Fuzhou, 2037: Tuesday 28 April.", "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": "2037-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2037 falls on Tuesday 28 April. Caturdaśī runs from 08:50 on Tue 28 Apr to 05:46 on Wed 29 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21038, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-30T02:53:56+08:00", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-30T02:53:56+08:00", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-29", "window": { "start": { "local": "2037-04-29T11:36:19+08:00", "utc": "2037-04-29T03:36:19Z", "ms": 2124588979191.836 }, "end": { "local": "2037-04-29T12:24:19+08:00", "utc": "2037-04-29T04:24:19Z", "ms": 2124591859191.836 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-30", "window": { "start": { "local": "2037-04-30T11:36:11+08:00", "utc": "2037-04-30T03:36:11Z", "ms": 2124675371153.5547 }, "end": { "local": "2037-04-30T12:24:11+08:00", "utc": "2037-04-30T04:24:11Z", "ms": 2124678251153.5547 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 05:46 on Wed 29 Apr to 02:54 on Thu 30 Apr.", "fact": "2037-04-28T21:45:42Z → 2037-04-29T18:53:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 29th, 11:36–12:24 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21038 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Fuzhou, 2037: Wednesday 29 April.", "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": "2037-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Buddha Pūrṇimā 2037 falls on Wednesday 29 April. Pūrṇimā runs from 05:46 on Wed 29 Apr to 02:54 on Thu 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21038, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-30T02:53:56+08:00", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-29T05:45:42+08:00", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-30T02:53:56+08:00", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-29", "window": { "start": { "local": "2037-04-29T11:36:19+08:00", "utc": "2037-04-29T03:36:19Z", "ms": 2124588979191.836 }, "end": { "local": "2037-04-29T12:24:19+08:00", "utc": "2037-04-29T04:24:19Z", "ms": 2124591859191.836 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-30", "window": { "start": { "local": "2037-04-30T11:36:11+08:00", "utc": "2037-04-30T03:36:11Z", "ms": 2124675371153.5547 }, "end": { "local": "2037-04-30T12:24:11+08:00", "utc": "2037-04-30T04:24:11Z", "ms": 2124678251153.5547 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 05:46 on Wed 29 Apr to 02:54 on Thu 30 Apr.", "fact": "2037-04-28T21:45:42Z → 2037-04-29T18:53:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 29th, 11:36–12:24 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21038 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Fuzhou, 2037: Wednesday 29 April.", "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": "2037-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Sampat Gaurī Vrata 2037 falls on Wednesday 29 April. Pūrṇimā runs from 05:46 on Wed 29 Apr to 02:54 on Thu 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-05-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-02", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 175, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-05-02T21:09:53+08:00", "utc": "2037-05-02T13:09:53Z", "ms": 2124882593258.8943 }, "end": { "local": "2037-05-03T20:39:15+08:00", "utc": "2037-05-03T12:39:15Z", "ms": 2124967154735.6716 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-02T21:09:53+08:00", "utc": "2037-05-02T13:09:53Z", "ms": 2124882593258.8943 }, "end": { "local": "2037-05-03T20:39:15+08:00", "utc": "2037-05-03T12:39:15Z", "ms": 2124967154735.6716 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-05-02", "window": { "start": { "local": "2037-05-02T21:12:49+08:00", "utc": "2037-05-02T13:12:49Z", "ms": 2124882768557.781 }, "end": { "local": "2037-05-02T21:12:49+08:00", "utc": "2037-05-02T13:12:49Z", "ms": 2124882768557.781 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-05-03", "window": { "start": { "local": "2037-05-03T22:10:14+08:00", "utc": "2037-05-03T14:10:14Z", "ms": 2124972613904.1006 }, "end": { "local": "2037-05-03T22:10:14+08:00", "utc": "2037-05-03T14:10:14Z", "ms": 2124972613904.1006 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:10 on Sat 2 May to 20:39 on Sun 3 May.", "fact": "2037-05-02T13:09:53Z → 2037-05-03T12:39:15Z" }, { "step": "kaala", "text": "Moonrise is at 21:13 on the 2nd and 22:10 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 175 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Saturday 2 May.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Saturday 2 May. Caturthī runs from 21:10 on Sat 2 May to 20:39 on Sun 3 May and is current at moonrise that day. It is 2 min 55 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-05-11", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6557, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-05-10T07:09:03+08:00", "utc": "2037-05-09T23:09:03Z", "ms": 2125523342558.1692 }, "end": { "local": "2037-05-11T09:25:59+08:00", "utc": "2037-05-11T01:25:59Z", "ms": 2125617958577.6653 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-10T07:09:03+08:00", "utc": "2037-05-09T23:09:03Z", "ms": 2125523342558.1692 }, "end": { "local": "2037-05-11T09:25:59+08:00", "utc": "2037-05-11T01:25:59Z", "ms": 2125617958577.6653 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-05-10", "window": { "start": { "local": "2037-05-10T05:19:46+08:00", "utc": "2037-05-09T21:19:46Z", "ms": 2125516785508.5344 }, "end": { "local": "2037-05-10T05:19:46+08:00", "utc": "2037-05-09T21:19:46Z", "ms": 2125516785508.5344 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-05-11", "window": { "start": { "local": "2037-05-11T05:19:09+08:00", "utc": "2037-05-10T21:19:09Z", "ms": 2125603149317.7258 }, "end": { "local": "2037-05-11T05:19:09+08:00", "utc": "2037-05-10T21:19:09Z", "ms": 2125603149317.7258 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:09 on Sun 10 May to 09:26 on Mon 11 May.", "fact": "2037-05-09T23:09:03Z → 2037-05-11T01:25:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 10th and 05:19 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 6557 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Fuzhou, 2037: Monday 11 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": "2037-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Aparā Ekādaśī 2037 falls on Monday 11 May. Ekādaśī runs from 07:09 on Sun 10 May to 09:26 on Mon 11 May and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-05-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21502, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-05-12T11:18:59+08:00", "utc": "2037-05-12T03:18:59Z", "ms": 2125711139168.4514 }, "end": { "local": "2037-05-13T12:42:13+08:00", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-12T11:18:59+08:00", "utc": "2037-05-12T03:18:59Z", "ms": 2125711139168.4514 }, "end": { "local": "2037-05-13T12:42:13+08:00", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-05-12", "window": { "start": { "local": "2037-05-12T18:40:02+08:00", "utc": "2037-05-12T10:40:02Z", "ms": 2125737602275.5288 }, "end": { "local": "2037-05-12T20:05:06+08:00", "utc": "2037-05-12T12:05:06Z", "ms": 2125742706017.1643 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "2037-05-13", "window": { "start": { "local": "2037-05-13T18:40:35+08:00", "utc": "2037-05-13T10:40:35Z", "ms": 2125824034880.5083 }, "end": { "local": "2037-05-13T20:05:30+08:00", "utc": "2037-05-13T12:05:30Z", "ms": 2125829129906.2844 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:19 on Tue 12 May to 12:42 on Wed 13 May.", "fact": "2037-05-12T03:18:59Z → 2037-05-13T04:42:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:05 on the 12th, 18:41–20:05 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 85 of 85 minutes on the 12th and 0 of 85 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21502 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Tuesday 12 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": "2037-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Tuesday 12 May. Trayodaśī runs from 11:19 on Tue 12 May to 12:42 on Wed 13 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-05-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-05-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36081, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-05-13T12:42:13+08:00", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "end": { "local": "2037-05-14T13:33:41+08:00", "utc": "2037-05-14T05:33:41Z", "ms": 2125892021208.4006 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-13T12:42:13+08:00", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "end": { "local": "2037-05-14T13:33:41+08:00", "utc": "2037-05-14T05:33:41Z", "ms": 2125892021208.4006 } }, "kaala": "nishita", "days": [ { "local_date": "2037-05-13", "window": { "start": { "local": "2037-05-13T23:35:01+08:00", "utc": "2037-05-13T15:35:01Z", "ms": 2125841701227.1685 }, "end": { "local": "2037-05-14T00:23:01+08:00", "utc": "2037-05-13T16:23:01Z", "ms": 2125844581227.1685 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-05-14", "window": { "start": { "local": "2037-05-14T23:35:02+08:00", "utc": "2037-05-14T15:35:02Z", "ms": 2125928101726.254 }, "end": { "local": "2037-05-15T00:23:02+08:00", "utc": "2037-05-14T16:23:02Z", "ms": 2125930981726.254 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:42 on Wed 13 May to 13:34 on Thu 14 May.", "fact": "2037-05-13T04:42:13Z → 2037-05-14T05:33:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:35–00:23 on the 13th, 23:35–00:23 on the 14th.", "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 13th and 0 of 48 on the 14th.", "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 36081 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Wednesday 13 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": "2037-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Wednesday 13 May. Caturdaśī runs from 12:42 on Wed 13 May to 13:34 on Thu 14 May and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-05-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-05-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-18", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 21, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-05-18T12:23:02+08:00", "utc": "2037-05-18T04:23:02Z", "ms": 2126233381680.3184 }, "end": { "local": "2037-05-19T11:12:30+08:00", "utc": "2037-05-19T03:12:30Z", "ms": 2126315550413.4724 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-18T12:23:02+08:00", "utc": "2037-05-18T04:23:02Z", "ms": 2126233381680.3184 }, "end": { "local": "2037-05-19T11:12:30+08:00", "utc": "2037-05-19T03:12:30Z", "ms": 2126315550413.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-05-18", "window": { "start": { "local": "2037-05-18T11:35:23+08:00", "utc": "2037-05-18T03:35:23Z", "ms": 2126230522792.3552 }, "end": { "local": "2037-05-18T12:23:23+08:00", "utc": "2037-05-18T04:23:23Z", "ms": 2126233402792.3552 } }, "covered_min": 0, "window_min": 48, "qualifies": true }, { "local_date": "2037-05-19", "window": { "start": { "local": "2037-05-19T11:35:25+08:00", "utc": "2037-05-19T03:35:25Z", "ms": 2126316925467.308 }, "end": { "local": "2037-05-19T12:23:25+08:00", "utc": "2037-05-19T04:23:25Z", "ms": 2126319805467.308 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:23 on Mon 18 May to 11:13 on Tue 19 May.", "fact": "2037-05-18T04:23:02Z → 2037-05-19T03:12:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 18th, 11:35–12:23 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 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": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Monday 18 May.", "fact": "confidence: boundary (margin)" } ], "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": "2037-05-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-18", "confidence": "boundary" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Monday 18 May. Caturthī runs from 12:23 on Mon 18 May to 11:13 on Tue 19 May and covers 0 of 48 minutes of madhyāhna that midday. It is 0 min 21 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-05-25", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21098, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-05-24T23:21:08+08:00", "utc": "2037-05-24T15:21:08Z", "ms": 2126791268260.6074 }, "end": { "local": "2037-05-25T20:52:22+08:00", "utc": "2037-05-25T12:52:22Z", "ms": 2126868741621.5696 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-24T23:21:08+08:00", "utc": "2037-05-24T15:21:08Z", "ms": 2126791268260.6074 }, "end": { "local": "2037-05-25T20:52:22+08:00", "utc": "2037-05-25T12:52:22Z", "ms": 2126868741621.5696 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-05-25", "window": { "start": { "local": "2037-05-25T05:12:46+08:00", "utc": "2037-05-24T21:12:46Z", "ms": 2126812365835.5132 }, "end": { "local": "2037-05-25T05:12:46+08:00", "utc": "2037-05-24T21:12:46Z", "ms": 2126812365835.5132 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-05-26", "window": { "start": { "local": "2037-05-26T05:12:28+08:00", "utc": "2037-05-25T21:12:28Z", "ms": 2126898747553.2437 }, "end": { "local": "2037-05-26T05:12:28+08:00", "utc": "2037-05-25T21:12:28Z", "ms": 2126898747553.2437 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:21 on Sun 24 May to 20:52 on Mon 25 May.", "fact": "2037-05-24T15:21:08Z → 2037-05-25T12:52:22Z" }, { "step": "kaala", "text": "Sunrise is at 05:13 on the 25th and 05:12 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21098 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Fuzhou, 2037: Monday 25 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": "2037-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Ekādaśī 2037 falls on Monday 25 May. Ekādaśī runs from 23:21 on Sun 24 May to 20:52 on Mon 25 May and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-05-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1327, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-05-26T18:25:23+08:00", "utc": "2037-05-26T10:25:23Z", "ms": 2126946322510.1653 }, "end": { "local": "2037-05-27T16:06:44+08:00", "utc": "2037-05-27T08:06:44Z", "ms": 2127024403830.5266 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-26T18:25:23+08:00", "utc": "2037-05-26T10:25:23Z", "ms": 2126946322510.1653 }, "end": { "local": "2037-05-27T16:06:44+08:00", "utc": "2037-05-27T08:06:44Z", "ms": 2127024403830.5266 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-05-26", "window": { "start": { "local": "2037-05-26T18:47:29+08:00", "utc": "2037-05-26T10:47:29Z", "ms": 2126947649078.2957 }, "end": { "local": "2037-05-26T20:10:47+08:00", "utc": "2037-05-26T12:10:47Z", "ms": 2126952646603.8823 } }, "covered_min": 83, "window_min": 83, "qualifies": true }, { "local_date": "2037-05-27", "window": { "start": { "local": "2037-05-27T18:47:59+08:00", "utc": "2037-05-27T10:47:59Z", "ms": 2127034079314.4978 }, "end": { "local": "2037-05-27T20:11:11+08:00", "utc": "2037-05-27T12:11:11Z", "ms": 2127039070704.8118 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:25 on Tue 26 May to 16:07 on Wed 27 May.", "fact": "2037-05-26T10:25:23Z → 2037-05-27T08:06:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:47–20:11 on the 26th, 18:48–20:11 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 83 of 83 minutes on the 26th and 0 of 83 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1327 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Tuesday 26 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": "2037-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Tuesday 26 May. Trayodaśī runs from 18:25 on Tue 26 May to 16:07 on Wed 27 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-06-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38841, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-06-01T10:52:24+08:00", "utc": "2037-06-01T02:52:24Z", "ms": 2127437544284.9214 }, "end": { "local": "2037-06-02T11:43:26+08:00", "utc": "2037-06-02T03:43:26Z", "ms": 2127527005540.9302 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-01T10:52:24+08:00", "utc": "2037-06-01T02:52:24Z", "ms": 2127437544284.9214 }, "end": { "local": "2037-06-02T11:43:26+08:00", "utc": "2037-06-02T03:43:26Z", "ms": 2127527005540.9302 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-06-01", "window": { "start": { "local": "2037-06-01T21:43:51+08:00", "utc": "2037-06-01T13:43:51Z", "ms": 2127476631159.8247 }, "end": { "local": "2037-06-01T21:43:51+08:00", "utc": "2037-06-01T13:43:51Z", "ms": 2127476631159.8247 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-06-02", "window": { "start": { "local": "2037-06-02T22:30:46+08:00", "utc": "2037-06-02T14:30:46Z", "ms": 2127565846437.3735 }, "end": { "local": "2037-06-02T22:30:46+08:00", "utc": "2037-06-02T14:30:46Z", "ms": 2127565846437.3735 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:52 on Mon 1 Jun to 11:43 on Tue 2 Jun.", "fact": "2037-06-01T02:52:24Z → 2037-06-02T03:43:26Z" }, { "step": "kaala", "text": "Moonrise is at 21:44 on the 1st and 22:31 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 1st and is not on the 2nd.", "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 38841 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Monday 1 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": "2037-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Monday 1 June. Caturthī runs from 10:52 on Mon 1 Jun to 11:43 on Tue 2 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-06-09", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12685, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-06-09T00:15:03+08:00", "utc": "2037-06-08T16:15:03Z", "ms": 2128090503227.557 }, "end": { "local": "2037-06-10T01:38:59+08:00", "utc": "2037-06-09T17:38:59Z", "ms": 2128181939489.9663 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-09T00:15:03+08:00", "utc": "2037-06-08T16:15:03Z", "ms": 2128090503227.557 }, "end": { "local": "2037-06-10T01:38:59+08:00", "utc": "2037-06-09T17:38:59Z", "ms": 2128181939489.9663 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-06-09", "window": { "start": { "local": "2037-06-09T05:10:24+08:00", "utc": "2037-06-08T21:10:24Z", "ms": 2128108223763.5522 }, "end": { "local": "2037-06-09T05:10:24+08:00", "utc": "2037-06-08T21:10:24Z", "ms": 2128108223763.5522 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-06-10", "window": { "start": { "local": "2037-06-10T05:10:24+08:00", "utc": "2037-06-09T21:10:24Z", "ms": 2128194624252.8179 }, "end": { "local": "2037-06-10T05:10:24+08:00", "utc": "2037-06-09T21:10:24Z", "ms": 2128194624252.8179 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:15 on Tue 9 Jun to 01:39 on Wed 10 Jun.", "fact": "2037-06-08T16:15:03Z → 2037-06-09T17:38:59Z" }, { "step": "kaala", "text": "Sunrise is at 05:10 on the 9th and 05:10 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12685 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Fuzhou, 2037: Tuesday 9 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": "2037-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Ekādaśī 2037 falls on Tuesday 9 June. Ekādaśī runs from 00:15 on Tue 9 Jun to 01:39 on Wed 10 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-06-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22189, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-06-11T02:26:13+08:00", "utc": "2037-06-10T18:26:13Z", "ms": 2128271172940.156 }, "end": { "local": "2037-06-12T02:35:30+08:00", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-11T02:26:13+08:00", "utc": "2037-06-10T18:26:13Z", "ms": 2128271172940.156 }, "end": { "local": "2037-06-12T02:35:30+08:00", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-10", "window": { "start": { "local": "2037-06-10T18:54:15+08:00", "utc": "2037-06-10T10:54:15Z", "ms": 2128244054535.8042 }, "end": { "local": "2037-06-10T20:16:24+08:00", "utc": "2037-06-10T12:16:24Z", "ms": 2128248984055.8235 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2037-06-11", "window": { "start": { "local": "2037-06-11T18:54:37+08:00", "utc": "2037-06-11T10:54:37Z", "ms": 2128330476793.6907 }, "end": { "local": "2037-06-11T20:16:44+08:00", "utc": "2037-06-11T12:16:44Z", "ms": 2128335403727.3577 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:26 on Thu 11 Jun to 02:35 on Fri 12 Jun.", "fact": "2037-06-10T18:26:13Z → 2037-06-11T18:35:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:16 on the 10th, 18:55–20:17 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 10th and 82 of 82 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22189 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Thursday 11 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": "2037-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 11 June. Trayodaśī runs from 02:26 on Thu 11 Jun to 02:35 on Fri 12 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-06-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6123, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-06-12T02:35:30+08:00", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "end": { "local": "2037-06-13T02:08:49+08:00", "utc": "2037-06-12T18:08:49Z", "ms": 2128442928844.3892 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-12T02:35:30+08:00", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "end": { "local": "2037-06-13T02:08:49+08:00", "utc": "2037-06-12T18:08:49Z", "ms": 2128442928844.3892 } }, "kaala": "nishita", "days": [ { "local_date": "2037-06-11", "window": { "start": { "local": "2037-06-11T23:38:33+08:00", "utc": "2037-06-11T15:38:33Z", "ms": 2128347512794.9421 }, "end": { "local": "2037-06-12T00:26:33+08:00", "utc": "2037-06-11T16:26:33Z", "ms": 2128350392794.9421 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-12", "window": { "start": { "local": "2037-06-12T23:38:46+08:00", "utc": "2037-06-12T15:38:46Z", "ms": 2128433925549.184 }, "end": { "local": "2037-06-13T00:26:46+08:00", "utc": "2037-06-12T16:26:46Z", "ms": 2128436805549.184 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:35 on Fri 12 Jun to 02:09 on Sat 13 Jun.", "fact": "2037-06-11T18:35:30Z → 2037-06-12T18:08:49Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:39–00:27 on the 11th, 23:39–00:27 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6123 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Friday 12 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": "2037-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Friday 12 June. Caturdaśī runs from 02:35 on Fri 12 Jun to 02:09 on Sat 13 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27065, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-06-15T21:59:36+08:00", "utc": "2037-06-15T13:59:36Z", "ms": 2128687175645.436 }, "end": { "local": "2037-06-16T19:58:39+08:00", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-15T21:59:36+08:00", "utc": "2037-06-15T13:59:36Z", "ms": 2128687175645.436 }, "end": { "local": "2037-06-16T19:58:39+08:00", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-15", "window": { "start": { "local": "2037-06-15T11:39:21+08:00", "utc": "2037-06-15T03:39:21Z", "ms": 2128649961030.4387 }, "end": { "local": "2037-06-15T12:27:21+08:00", "utc": "2037-06-15T04:27:21Z", "ms": 2128652841030.4387 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-16", "window": { "start": { "local": "2037-06-16T11:39:34+08:00", "utc": "2037-06-16T03:39:34Z", "ms": 2128736373757.755 }, "end": { "local": "2037-06-16T12:27:34+08:00", "utc": "2037-06-16T04:27:34Z", "ms": 2128739253757.755 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:00 on Mon 15 Jun to 19:59 on Tue 16 Jun.", "fact": "2037-06-15T13:59:36Z → 2037-06-16T11:58:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 15th, 11:40–12:28 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27065 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Fuzhou, 2037: Tuesday 16 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Rambhā Tṛtīyā 2037 falls on Tuesday 16 June. Tṛtīyā runs from 22:00 on Mon 15 Jun to 19:59 on Tue 16 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-06-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19185, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-06-16T19:58:39+08:00", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "end": { "local": "2037-06-17T17:47:32+08:00", "utc": "2037-06-17T09:47:32Z", "ms": 2128844851581.9788 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-16T19:58:39+08:00", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "end": { "local": "2037-06-17T17:47:32+08:00", "utc": "2037-06-17T09:47:32Z", "ms": 2128844851581.9788 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-16", "window": { "start": { "local": "2037-06-16T11:39:34+08:00", "utc": "2037-06-16T03:39:34Z", "ms": 2128736373757.755 }, "end": { "local": "2037-06-16T12:27:34+08:00", "utc": "2037-06-16T04:27:34Z", "ms": 2128739253757.755 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-17", "window": { "start": { "local": "2037-06-17T11:39:47+08:00", "utc": "2037-06-17T03:39:47Z", "ms": 2128822786553.5408 }, "end": { "local": "2037-06-17T12:27:47+08:00", "utc": "2037-06-17T04:27:47Z", "ms": 2128825666553.5408 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:59 on Tue 16 Jun to 17:48 on Wed 17 Jun.", "fact": "2037-06-16T11:58:39Z → 2037-06-17T09:47:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 16th, 11:40–12:28 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19185 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Wednesday 17 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": "2037-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Wednesday 17 June. Caturthī runs from 19:59 on Tue 16 Jun to 17:48 on Wed 17 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2592, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-06-18T15:30:33+08:00", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T13:11:24+08:00", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-18T15:30:33+08:00", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T13:11:24+08:00", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-18", "window": { "start": { "local": "2037-06-18T11:39:59+08:00", "utc": "2037-06-18T03:39:59Z", "ms": 2128909199390.1475 }, "end": { "local": "2037-06-18T12:27:59+08:00", "utc": "2037-06-18T04:27:59Z", "ms": 2128912079390.1475 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-19", "window": { "start": { "local": "2037-06-19T11:40:12+08:00", "utc": "2037-06-19T03:40:12Z", "ms": 2128995612240.8213 }, "end": { "local": "2037-06-19T12:28:12+08:00", "utc": "2037-06-19T04:28:12Z", "ms": 2128998492240.8213 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:31 on Thu 18 Jun to 13:11 on Fri 19 Jun.", "fact": "2037-06-18T07:30:33Z → 2037-06-19T05:11:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 18th, 11:40–12:28 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2592 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Fuzhou, 2037: Friday 19 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Araṇya Gaurī Vrata 2037 falls on Friday 19 June. Ṣaṣṭhī runs from 15:31 on Thu 18 Jun to 13:11 on Fri 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2592, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-06-18T15:30:33+08:00", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T13:11:24+08:00", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-18T15:30:33+08:00", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T13:11:24+08:00", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-18", "window": { "start": { "local": "2037-06-18T11:39:59+08:00", "utc": "2037-06-18T03:39:59Z", "ms": 2128909199390.1475 }, "end": { "local": "2037-06-18T12:27:59+08:00", "utc": "2037-06-18T04:27:59Z", "ms": 2128912079390.1475 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-19", "window": { "start": { "local": "2037-06-19T11:40:12+08:00", "utc": "2037-06-19T03:40:12Z", "ms": 2128995612240.8213 }, "end": { "local": "2037-06-19T12:28:12+08:00", "utc": "2037-06-19T04:28:12Z", "ms": 2128998492240.8213 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:31 on Thu 18 Jun to 13:11 on Fri 19 Jun.", "fact": "2037-06-18T07:30:33Z → 2037-06-19T05:11:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 18th, 11:40–12:28 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2592 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Fuzhou, 2037: Friday 19 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2037 falls on Friday 19 June. Ṣaṣṭhī runs from 15:31 on Thu 18 Jun to 13:11 on Fri 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-06-23", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2345, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-06-23T04:33:07+08:00", "utc": "2037-06-22T20:33:07Z", "ms": 2129315587116.06 }, "end": { "local": "2037-06-24T02:48:13+08:00", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-23T04:33:07+08:00", "utc": "2037-06-22T20:33:07Z", "ms": 2129315587116.06 }, "end": { "local": "2037-06-24T02:48:13+08:00", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-06-23", "window": { "start": { "local": "2037-06-23T05:12:12+08:00", "utc": "2037-06-22T21:12:12Z", "ms": 2129317931748.9834 }, "end": { "local": "2037-06-23T05:12:12+08:00", "utc": "2037-06-22T21:12:12Z", "ms": 2129317931748.9834 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T05:12:27+08:00", "utc": "2037-06-23T21:12:27Z", "ms": 2129404346994.731 }, "end": { "local": "2037-06-24T05:12:27+08:00", "utc": "2037-06-23T21:12:27Z", "ms": 2129404346994.731 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:33 on Tue 23 Jun to 02:48 on Wed 24 Jun.", "fact": "2037-06-22T20:33:07Z → 2037-06-23T18:48:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:12 on the 23rd and 05:12 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2345 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Fuzhou, 2037: Tuesday 23 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": "2037-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Nirjalā Ekādaśī 2037 falls on Tuesday 23 June. Ekādaśī runs from 04:33 on Tue 23 Jun to 02:48 on Wed 24 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31983, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-06-24T02:48:13+08:00", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "end": { "local": "2037-06-25T01:20:16+08:00", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-24T02:48:13+08:00", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "end": { "local": "2037-06-25T01:20:16+08:00", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T11:41:16+08:00", "utc": "2037-06-24T03:41:16Z", "ms": 2129427675856.2563 }, "end": { "local": "2037-06-24T12:29:16+08:00", "utc": "2037-06-24T04:29:16Z", "ms": 2129430555856.2563 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-06-25", "window": { "start": { "local": "2037-06-25T11:41:28+08:00", "utc": "2037-06-25T03:41:28Z", "ms": 2129514088299.0237 }, "end": { "local": "2037-06-25T12:29:28+08:00", "utc": "2037-06-25T04:29:28Z", "ms": 2129516968299.0237 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:48 on Wed 24 Jun to 01:20 on Thu 25 Jun.", "fact": "2037-06-23T18:48:13Z → 2037-06-24T17:20:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 24th, 11:41–12:29 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31983 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Fuzhou, 2037: Wednesday 24 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": "2037-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Śrī Rāma Dvādaśī 2037 falls on Wednesday 24 June. Dvādaśī runs from 02:48 on Wed 24 Jun to 01:20 on Thu 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-06-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13996, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-06-25T01:20:16+08:00", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "end": { "local": "2037-06-26T00:13:28+08:00", "utc": "2037-06-25T16:13:28Z", "ms": 2129559208057.914 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-25T01:20:16+08:00", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "end": { "local": "2037-06-26T00:13:28+08:00", "utc": "2037-06-25T16:13:28Z", "ms": 2129559208057.914 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T18:58:05+08:00", "utc": "2037-06-24T10:58:05Z", "ms": 2129453884717.782 }, "end": { "local": "2037-06-24T20:20:02+08:00", "utc": "2037-06-24T12:20:02Z", "ms": 2129458801838.0815 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2037-06-25", "window": { "start": { "local": "2037-06-25T18:58:13+08:00", "utc": "2037-06-25T10:58:13Z", "ms": 2129540293478.0193 }, "end": { "local": "2037-06-25T20:20:12+08:00", "utc": "2037-06-25T12:20:12Z", "ms": 2129545211694.5212 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:20 on Thu 25 Jun to 00:13 on Fri 26 Jun.", "fact": "2037-06-24T17:20:16Z → 2037-06-25T16:13:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:20 on the 24th, 18:58–20:20 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 24th and 82 of 82 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13996 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Thursday 25 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": "2037-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Thursday 25 June. Trayodaśī runs from 01:20 on Thu 25 Jun to 00:13 on Fri 26 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-06-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10770, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-06-26T23:32:04+08:00", "utc": "2037-06-26T15:32:04Z", "ms": 2129643124416.8057 }, "end": { "local": "2037-06-27T23:19:59+08:00", "utc": "2037-06-27T15:19:59Z", "ms": 2129728799178.3853 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-26T23:32:04+08:00", "utc": "2037-06-26T15:32:04Z", "ms": 2129643124416.8057 }, "end": { "local": "2037-06-27T23:19:59+08:00", "utc": "2037-06-27T15:19:59Z", "ms": 2129728799178.3853 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-26", "window": { "start": { "local": "2037-06-26T18:58:21+08:00", "utc": "2037-06-26T10:58:21Z", "ms": 2129626701102.0134 }, "end": { "local": "2037-06-26T20:20:21+08:00", "utc": "2037-06-26T12:20:21Z", "ms": 2129631620677.3135 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2037-06-27", "window": { "start": { "local": "2037-06-27T18:58:28+08:00", "utc": "2037-06-27T10:58:28Z", "ms": 2129713107575.581 }, "end": { "local": "2037-06-27T20:20:29+08:00", "utc": "2037-06-27T12:20:29Z", "ms": 2129718028771.0342 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:32 on Fri 26 Jun to 23:20 on Sat 27 Jun.", "fact": "2037-06-26T15:32:04Z → 2037-06-27T15:19:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:20 on the 26th, 18:58–20:20 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 82 minutes on the 26th and 82 of 82 on the 27th.", "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 10770 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Fuzhou, 2037: Saturday 27 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": "2037-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Vaṭa Sāvitrī Vrata 2037 falls on Saturday 27 June. Pūrṇimā runs from 23:32 on Fri 26 Jun to 23:20 on Sat 27 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-07-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17494, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-07-01T02:00:04+08:00", "utc": "2037-06-30T18:00:04Z", "ms": 2129997603742.042 }, "end": { "local": "2037-07-02T03:54:23+08:00", "utc": "2037-07-01T19:54:23Z", "ms": 2130090863103.2776 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-01T02:00:04+08:00", "utc": "2037-06-30T18:00:04Z", "ms": 2129997603742.042 }, "end": { "local": "2037-07-02T03:54:23+08:00", "utc": "2037-07-01T19:54:23Z", "ms": 2130090863103.2776 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-06-30", "window": { "start": { "local": "2037-06-30T21:08:30+08:00", "utc": "2037-06-30T13:08:30Z", "ms": 2129980110023.8193 }, "end": { "local": "2037-06-30T21:08:30+08:00", "utc": "2037-06-30T13:08:30Z", "ms": 2129980110023.8193 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-01", "window": { "start": { "local": "2037-07-01T21:48:57+08:00", "utc": "2037-07-01T13:48:57Z", "ms": 2130068937481.1604 }, "end": { "local": "2037-07-01T21:48:57+08:00", "utc": "2037-07-01T13:48:57Z", "ms": 2130068937481.1604 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:00 on Wed 1 Jul to 03:54 on Thu 2 Jul.", "fact": "2037-06-30T18:00:04Z → 2037-07-01T19:54:23Z" }, { "step": "kaala", "text": "Moonrise is at 21:09 on the 30th and 21:49 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 30th and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17494 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Wednesday 1 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": "2037-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Wednesday 1 July. Caturthī runs from 02:00 on Wed 1 Jul to 03:54 on Thu 2 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-07-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-07-09", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37190, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-07-08T15:37:12+08:00", "utc": "2037-07-08T07:37:12Z", "ms": 2130651432022.715 }, "end": { "local": "2037-07-09T15:55:20+08:00", "utc": "2037-07-09T07:55:20Z", "ms": 2130738920325.9382 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-08T15:37:12+08:00", "utc": "2037-07-08T07:37:12Z", "ms": 2130651432022.715 }, "end": { "local": "2037-07-09T15:55:20+08:00", "utc": "2037-07-09T07:55:20Z", "ms": 2130738920325.9382 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-07-08", "window": { "start": { "local": "2037-07-08T05:17:22+08:00", "utc": "2037-07-07T21:17:22Z", "ms": 2130614241770.1958 }, "end": { "local": "2037-07-08T05:17:22+08:00", "utc": "2037-07-07T21:17:22Z", "ms": 2130614241770.1958 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-09", "window": { "start": { "local": "2037-07-09T05:17:48+08:00", "utc": "2037-07-08T21:17:48Z", "ms": 2130700667589.858 }, "end": { "local": "2037-07-09T05:17:48+08:00", "utc": "2037-07-08T21:17:48Z", "ms": 2130700667589.858 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:37 on Wed 8 Jul to 15:55 on Thu 9 Jul.", "fact": "2037-07-08T07:37:12Z → 2037-07-09T07:55:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:17 on the 8th and 05:18 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37190 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Fuzhou, 2037: Thursday 9 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": "2037-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Yoginī Ekādaśī 2037 falls on Thursday 9 July. Ekādaśī runs from 15:37 on Wed 8 Jul to 15:55 on Thu 9 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-07-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12452, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-07-10T15:30:30+08:00", "utc": "2037-07-10T07:30:30Z", "ms": 2130823830065.001 }, "end": { "local": "2037-07-11T14:24:54+08:00", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-10T15:30:30+08:00", "utc": "2037-07-10T07:30:30Z", "ms": 2130823830065.001 }, "end": { "local": "2037-07-11T14:24:54+08:00", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-10", "window": { "start": { "local": "2037-07-10T18:58:02+08:00", "utc": "2037-07-10T10:58:02Z", "ms": 2130836281710.9346 }, "end": { "local": "2037-07-10T20:20:47+08:00", "utc": "2037-07-10T12:20:47Z", "ms": 2130841246901.7952 } }, "covered_min": 83, "window_min": 83, "qualifies": true }, { "local_date": "2037-07-11", "window": { "start": { "local": "2037-07-11T18:57:51+08:00", "utc": "2037-07-11T10:57:51Z", "ms": 2130922670927.2808 }, "end": { "local": "2037-07-11T20:20:41+08:00", "utc": "2037-07-11T12:20:41Z", "ms": 2130927641178.4177 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:31 on Fri 10 Jul to 14:25 on Sat 11 Jul.", "fact": "2037-07-10T07:30:30Z → 2037-07-11T06:24:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:21 on the 10th, 18:58–20:21 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 83 of 83 minutes on the 10th and 0 of 83 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12452 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Friday 10 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": "2037-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Friday 10 July. Trayodaśī runs from 15:31 on Fri 10 Jul to 14:25 on Sat 11 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-07-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-07-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33576, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-07-11T14:24:54+08:00", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "end": { "local": "2037-07-12T12:43:14+08:00", "utc": "2037-07-12T04:43:14Z", "ms": 2130986593662.463 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-11T14:24:54+08:00", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "end": { "local": "2037-07-12T12:43:14+08:00", "utc": "2037-07-12T04:43:14Z", "ms": 2130986593662.463 } }, "kaala": "nishita", "days": [ { "local_date": "2037-07-11", "window": { "start": { "local": "2037-07-11T23:44:29+08:00", "utc": "2037-07-11T15:44:29Z", "ms": 2130939869369.045 }, "end": { "local": "2037-07-12T00:32:29+08:00", "utc": "2037-07-11T16:32:29Z", "ms": 2130942749369.045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-12", "window": { "start": { "local": "2037-07-12T23:44:37+08:00", "utc": "2037-07-12T15:44:37Z", "ms": 2131026277106.6157 }, "end": { "local": "2037-07-13T00:32:37+08:00", "utc": "2037-07-12T16:32:37Z", "ms": 2131029157106.6157 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:25 on Sat 11 Jul to 12:43 on Sun 12 Jul.", "fact": "2037-07-11T06:24:54Z → 2037-07-12T04:43:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:44–00:32 on the 11th, 23:45–00:33 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33576 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Saturday 11 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Saturday 11 July. Caturdaśī runs from 14:25 on Sat 11 Jul to 12:43 on Sun 12 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13594, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-07-14T07:58:03+08:00", "utc": "2037-07-13T23:58:03Z", "ms": 2131142282859.9478 }, "end": { "local": "2037-07-15T05:09:28+08:00", "utc": "2037-07-14T21:09:28Z", "ms": 2131218567566.3926 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-14T07:58:03+08:00", "utc": "2037-07-13T23:58:03Z", "ms": 2131142282859.9478 }, "end": { "local": "2037-07-15T05:09:28+08:00", "utc": "2037-07-14T21:09:28Z", "ms": 2131218567566.3926 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-14", "window": { "start": { "local": "2037-07-14T11:44:37+08:00", "utc": "2037-07-14T03:44:37Z", "ms": 2131155877028.194 }, "end": { "local": "2037-07-14T12:32:37+08:00", "utc": "2037-07-14T04:32:37Z", "ms": 2131158757028.194 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-15", "window": { "start": { "local": "2037-07-15T11:44:43+08:00", "utc": "2037-07-15T03:44:43Z", "ms": 2131242283141.0571 }, "end": { "local": "2037-07-15T12:32:43+08:00", "utc": "2037-07-15T04:32:43Z", "ms": 2131245163141.0571 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 07:58 on Tue 14 Jul to 05:09 on Wed 15 Jul.", "fact": "2037-07-13T23:58:03Z → 2037-07-14T21:09:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 14th, 11:45–12:33 on the 15th.", "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 14th and 0 of 48 on the 15th.", "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 13594 s" }, { "step": "ruling", "text": "Rathayātrā, Fuzhou, 2037: Tuesday 14 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Rathayātrā 2037 falls on Tuesday 14 July. Dvitīyā runs from 07:58 on Tue 14 Jul to 05:09 on Wed 15 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-07-16", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34268, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-07-16T02:13:40+08:00", "utc": "2037-07-15T18:13:40Z", "ms": 2131294420281.2258 }, "end": { "local": "2037-07-16T23:17:54+08:00", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-16T02:13:40+08:00", "utc": "2037-07-15T18:13:40Z", "ms": 2131294420281.2258 }, "end": { "local": "2037-07-16T23:17:54+08:00", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-16", "window": { "start": { "local": "2037-07-16T11:44:49+08:00", "utc": "2037-07-16T03:44:49Z", "ms": 2131328688738.478 }, "end": { "local": "2037-07-16T12:32:49+08:00", "utc": "2037-07-16T04:32:49Z", "ms": 2131331568738.478 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-17", "window": { "start": { "local": "2037-07-17T11:44:54+08:00", "utc": "2037-07-17T03:44:54Z", "ms": 2131415093803.7378 }, "end": { "local": "2037-07-17T12:32:54+08:00", "utc": "2037-07-17T04:32:54Z", "ms": 2131417973803.7378 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:14 on Thu 16 Jul to 23:18 on Thu 16 Jul.", "fact": "2037-07-15T18:13:40Z → 2037-07-16T15:17:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 16th, 11:45–12:33 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34268 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Thursday 16 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": "2037-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Thursday 16 July. Caturthī runs from 02:14 on Thu 16 Jul to 23:18 on Thu 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28553, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-07-16T23:17:54+08:00", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "end": { "local": "2037-07-17T20:28:47+08:00", "utc": "2037-07-17T12:28:47Z", "ms": 2131446526713.7024 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-16T23:17:54+08:00", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "end": { "local": "2037-07-17T20:28:47+08:00", "utc": "2037-07-17T12:28:47Z", "ms": 2131446526713.7024 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-16", "window": { "start": { "local": "2037-07-16T11:44:49+08:00", "utc": "2037-07-16T03:44:49Z", "ms": 2131328688738.478 }, "end": { "local": "2037-07-16T12:32:49+08:00", "utc": "2037-07-16T04:32:49Z", "ms": 2131331568738.478 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-17", "window": { "start": { "local": "2037-07-17T11:44:54+08:00", "utc": "2037-07-17T03:44:54Z", "ms": 2131415093803.7378 }, "end": { "local": "2037-07-17T12:32:54+08:00", "utc": "2037-07-17T04:32:54Z", "ms": 2131417973803.7378 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:18 on Thu 16 Jul to 20:29 on Fri 17 Jul.", "fact": "2037-07-16T15:17:54Z → 2037-07-17T12:28:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 16th, 11:45–12:33 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28553 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Fuzhou, 2037: Friday 17 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Pañcamī 2037 falls on Friday 17 July. Pañcamī runs from 23:18 on Thu 16 Jul to 20:29 on Fri 17 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10793, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-07-18T17:52:08+08:00", "utc": "2037-07-18T09:52:08Z", "ms": 2131523528421.6797 }, "end": { "local": "2037-07-19T15:32:55+08:00", "utc": "2037-07-19T07:32:55Z", "ms": 2131601575252.0872 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-18T17:52:08+08:00", "utc": "2037-07-18T09:52:08Z", "ms": 2131523528421.6797 }, "end": { "local": "2037-07-19T15:32:55+08:00", "utc": "2037-07-19T07:32:55Z", "ms": 2131601575252.0872 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-18", "window": { "start": { "local": "2037-07-18T11:44:58+08:00", "utc": "2037-07-18T03:44:58Z", "ms": 2131501498322.1265 }, "end": { "local": "2037-07-18T12:32:58+08:00", "utc": "2037-07-18T04:32:58Z", "ms": 2131504378322.1265 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-19", "window": { "start": { "local": "2037-07-19T11:45:02+08:00", "utc": "2037-07-19T03:45:02Z", "ms": 2131587902281.1152 }, "end": { "local": "2037-07-19T12:33:02+08:00", "utc": "2037-07-19T04:33:02Z", "ms": 2131590782281.1152 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 17:52 on Sat 18 Jul to 15:33 on Sun 19 Jul.", "fact": "2037-07-18T09:52:08Z → 2037-07-19T07:32:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 18th, 11:45–12:33 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10793 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Fuzhou, 2037: Sunday 19 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Vivasvat Saptamī 2037 falls on Sunday 19 July. Saptamī runs from 17:52 on Sat 18 Jul to 15:33 on Sun 19 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-07-23", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17408, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-07-22T10:54:16+08:00", "utc": "2037-07-22T02:54:16Z", "ms": 2131844055928.3923 }, "end": { "local": "2037-07-23T10:14:33+08:00", "utc": "2037-07-23T02:14:33Z", "ms": 2131928073483.6353 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-22T10:54:16+08:00", "utc": "2037-07-22T02:54:16Z", "ms": 2131844055928.3923 }, "end": { "local": "2037-07-23T10:14:33+08:00", "utc": "2037-07-23T02:14:33Z", "ms": 2131928073483.6353 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-07-22", "window": { "start": { "local": "2037-07-22T05:23:55+08:00", "utc": "2037-07-21T21:23:55Z", "ms": 2131824235298.5276 }, "end": { "local": "2037-07-22T05:23:55+08:00", "utc": "2037-07-21T21:23:55Z", "ms": 2131824235298.5276 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-23", "window": { "start": { "local": "2037-07-23T05:24:25+08:00", "utc": "2037-07-22T21:24:25Z", "ms": 2131910664994.755 }, "end": { "local": "2037-07-23T05:24:25+08:00", "utc": "2037-07-22T21:24:25Z", "ms": 2131910664994.755 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:54 on Wed 22 Jul to 10:15 on Thu 23 Jul.", "fact": "2037-07-22T02:54:16Z → 2037-07-23T02:14:33Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 22nd and 05:24 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17408 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Fuzhou, 2037: Thursday 23 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": "2037-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Hariśayanī Ekādaśī 2037 falls on Thursday 23 July. Ekādaśī runs from 10:54 on Wed 22 Jul to 10:15 on Thu 23 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-07-24", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30809, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-07-24T10:02:58+08:00", "utc": "2037-07-24T02:02:58Z", "ms": 2132013777934.1511 }, "end": { "local": "2037-07-25T10:19:34+08:00", "utc": "2037-07-25T02:19:34Z", "ms": 2132101174001.1782 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-24T10:02:58+08:00", "utc": "2037-07-24T02:02:58Z", "ms": 2132013777934.1511 }, "end": { "local": "2037-07-25T10:19:34+08:00", "utc": "2037-07-25T02:19:34Z", "ms": 2132101174001.1782 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-24", "window": { "start": { "local": "2037-07-24T18:53:32+08:00", "utc": "2037-07-24T10:53:32Z", "ms": 2132045612006.081 }, "end": { "local": "2037-07-24T20:17:47+08:00", "utc": "2037-07-24T12:17:47Z", "ms": 2132050667018.978 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "2037-07-25", "window": { "start": { "local": "2037-07-25T18:53:03+08:00", "utc": "2037-07-25T10:53:03Z", "ms": 2132131983067.3035 }, "end": { "local": "2037-07-25T20:17:26+08:00", "utc": "2037-07-25T12:17:26Z", "ms": 2132137045922.1448 } }, "covered_min": 0, "window_min": 84, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:03 on Fri 24 Jul to 10:20 on Sat 25 Jul.", "fact": "2037-07-24T02:02:58Z → 2037-07-25T02:19:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:54–20:18 on the 24th, 18:53–20:17 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 84 of 84 minutes on the 24th and 0 of 84 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30809 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Friday 24 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": "2037-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Friday 24 July. Trayodaśī runs from 10:03 on Fri 24 Jul to 10:20 on Sat 25 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-07-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14142, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T16:11:13+08:00", "utc": "2037-07-26T08:11:13Z", "ms": 2132208673209.4536 }, "end": { "local": "2037-07-26T18:52:33+08:00", "utc": "2037-07-26T10:52:33Z", "ms": 2132218352892.1638 } }, "covered_min": 161, "window_min": 161, "qualifies": true }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T16:10:54+08:00", "utc": "2037-07-27T08:10:54Z", "ms": 2132295054072.7869 }, "end": { "local": "2037-07-27T18:52:01+08:00", "utc": "2037-07-27T10:52:01Z", "ms": 2132304721495.947 } }, "covered_min": 0, "window_min": 161, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:11–18:53 on the 26th, 16:11–18:52 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 161 of 161 minutes on the 26th and 0 of 161 on the 27th.", "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 14142 s" }, { "step": "ruling", "text": "Kokilā Vrata, Fuzhou, 2037: Sunday 26 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": "2037-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Kokilā Vrata 2037 falls on Sunday 26 July. Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23809, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T18:52:33+08:00", "utc": "2037-07-26T10:52:33Z", "ms": 2132218352892.1638 }, "end": { "local": "2037-07-26T20:17:04+08:00", "utc": "2037-07-26T12:17:04Z", "ms": 2132223423757.228 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T18:52:01+08:00", "utc": "2037-07-27T10:52:01Z", "ms": 2132304721495.947 }, "end": { "local": "2037-07-27T20:16:41+08:00", "utc": "2037-07-27T12:16:41Z", "ms": 2132309800535.4243 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:17 on the 26th, 18:52–20:17 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 85 of 85 minutes on the 26th and 0 of 85 on the 27th.", "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 23809 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Fuzhou, 2037: Sunday 26 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": "2037-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Śiva Śayanotsava 2037 falls on Sunday 26 July. Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10604, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "udaya-3", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T05:25:54+08:00", "utc": "2037-07-25T21:25:54Z", "ms": 2132169954478.613 }, "end": { "local": "2037-07-26T08:07:14+08:00", "utc": "2037-07-26T00:07:14Z", "ms": 2132179634161.3232 } }, "covered_min": 0, "window_min": 161, "qualifies": false }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T05:26:24+08:00", "utc": "2037-07-26T21:26:24Z", "ms": 2132256384380.1458 }, "end": { "local": "2037-07-27T08:07:32+08:00", "utc": "2037-07-27T00:07:32Z", "ms": 2132266051803.306 } }, "covered_min": 161, "window_min": 161, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:26–08:07 on the 26th, 05:26–08:08 on the 27th.", "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 161 minutes on the 26th and 161 of 161 on the 27th.", "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 10604 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Fuzhou, 2037: Monday 27 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": "2037-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Vyāsa Pūjā 2037 falls on Monday 27 July. Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1081, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T11:03:58+08:00", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T12:15:12+08:00", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T11:45:14+08:00", "utc": "2037-07-26T03:45:14Z", "ms": 2132192713685.3884 }, "end": { "local": "2037-07-26T12:33:14+08:00", "utc": "2037-07-26T04:33:14Z", "ms": 2132195593685.3884 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T11:45:13+08:00", "utc": "2037-07-27T03:45:13Z", "ms": 2132279112938.0464 }, "end": { "local": "2037-07-27T12:33:13+08:00", "utc": "2037-07-27T04:33:13Z", "ms": 2132281992938.0464 } }, "covered_min": 30, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 26th, 11:45–12:33 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 30 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1081 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Fuzhou, 2037: Monday 27 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": "2037-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Guru Pūrṇimā 2037 falls on Monday 27 July. Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul and covers 30 of 48 minutes 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/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16503, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-07-28T13:51:24+08:00", "utc": "2037-07-28T05:51:24Z", "ms": 2132373084283.9153 }, "end": { "local": "2037-07-29T15:49:26+08:00", "utc": "2037-07-29T07:49:26Z", "ms": 2132466566102.6804 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-07-28T13:51:24+08:00", "utc": "2037-07-28T05:51:24Z", "ms": 2132373084283.9153 }, "end": { "local": "2037-07-29T15:49:26+08:00", "utc": "2037-07-29T07:49:26Z", "ms": 2132466566102.6804 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-07-28", "window": { "start": { "local": "2037-07-28T19:46:10+08:00", "utc": "2037-07-28T11:46:10Z", "ms": 2132394370447.87 }, "end": { "local": "2037-07-28T19:46:10+08:00", "utc": "2037-07-28T11:46:10Z", "ms": 2132394370447.87 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-07-29", "window": { "start": { "local": "2037-07-29T20:24:29+08:00", "utc": "2037-07-29T12:24:29Z", "ms": 2132483069075.158 }, "end": { "local": "2037-07-29T20:24:29+08:00", "utc": "2037-07-29T12:24:29Z", "ms": 2132483069075.158 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 13:51 on Tue 28 Jul to 15:49 on Wed 29 Jul.", "fact": "2037-07-28T05:51:24Z → 2037-07-29T07:49:26Z" }, { "step": "kaala", "text": "Moonrise is at 19:46 on the 28th and 20:24 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 28th and is not on the 29th.", "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 16503 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Fuzhou, 2037: Tuesday 28 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": "2037-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Aśūnya Śayana Vrata (Āṣāḍha) 2037 falls on Tuesday 28 July. Dvitīyā runs from 13:51 on Tue 28 Jul to 15:49 on Wed 29 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-07-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3859, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-07-30T18:04:23+08:00", "utc": "2037-07-30T10:04:23Z", "ms": 2132561062624.6616 }, "end": { "local": "2037-07-31T20:29:13+08:00", "utc": "2037-07-31T12:29:13Z", "ms": 2132656153052.2593 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-07-30T18:04:23+08:00", "utc": "2037-07-30T10:04:23Z", "ms": 2132561062624.6616 }, "end": { "local": "2037-07-31T20:29:13+08:00", "utc": "2037-07-31T12:29:13Z", "ms": 2132656153052.2593 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-07-30", "window": { "start": { "local": "2037-07-30T20:59:58+08:00", "utc": "2037-07-30T12:59:58Z", "ms": 2132571598269.418 }, "end": { "local": "2037-07-30T20:59:58+08:00", "utc": "2037-07-30T12:59:58Z", "ms": 2132571598269.418 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-07-31", "window": { "start": { "local": "2037-07-31T21:33:32+08:00", "utc": "2037-07-31T13:33:32Z", "ms": 2132660012291.016 }, "end": { "local": "2037-07-31T21:33:32+08:00", "utc": "2037-07-31T13:33:32Z", "ms": 2132660012291.016 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:04 on Thu 30 Jul to 20:29 on Fri 31 Jul.", "fact": "2037-07-30T10:04:23Z → 2037-07-31T12:29:13Z" }, { "step": "kaala", "text": "Moonrise is at 21:00 on the 30th and 21:34 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 30th and is not on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3859 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Thursday 30 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": "2037-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-30", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Thursday 30 July. Caturthī runs from 18:04 on Thu 30 Jul to 20:29 on Fri 31 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-08-07", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1321, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-08-07T05:09:50+08:00", "utc": "2037-08-06T21:09:50Z", "ms": 2133205789845.9272 }, "end": { "local": "2037-08-08T04:21:55+08:00", "utc": "2037-08-07T20:21:55Z", "ms": 2133289315003.5496 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-07T05:09:50+08:00", "utc": "2037-08-06T21:09:50Z", "ms": 2133205789845.9272 }, "end": { "local": "2037-08-08T04:21:55+08:00", "utc": "2037-08-07T20:21:55Z", "ms": 2133289315003.5496 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-08-07", "window": { "start": { "local": "2037-08-07T05:31:51+08:00", "utc": "2037-08-06T21:31:51Z", "ms": 2133207111045.6682 }, "end": { "local": "2037-08-07T05:31:51+08:00", "utc": "2037-08-06T21:31:51Z", "ms": 2133207111045.6682 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-08-08", "window": { "start": { "local": "2037-08-08T05:32:20+08:00", "utc": "2037-08-07T21:32:20Z", "ms": 2133293540221.42 }, "end": { "local": "2037-08-08T05:32:20+08:00", "utc": "2037-08-07T21:32:20Z", "ms": 2133293540221.42 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:10 on Fri 7 Aug to 04:22 on Sat 8 Aug.", "fact": "2037-08-06T21:09:50Z → 2037-08-07T20:21:55Z" }, { "step": "kaala", "text": "Sunrise is at 05:32 on the 7th and 05:32 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1321 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Fuzhou, 2037: Friday 7 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": "2037-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Kāmikā Ekādaśī 2037 falls on Friday 7 August. Ekādaśī runs from 05:10 on Fri 7 Aug to 04:22 on Sat 8 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-08-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16025, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-08-09T02:49:30+08:00", "utc": "2037-08-08T18:49:30Z", "ms": 2133370169771.2173 }, "end": { "local": "2037-08-10T00:37:13+08:00", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-09T02:49:30+08:00", "utc": "2037-08-08T18:49:30Z", "ms": 2133370169771.2173 }, "end": { "local": "2037-08-10T00:37:13+08:00", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-08-08", "window": { "start": { "local": "2037-08-08T18:44:16+08:00", "utc": "2037-08-08T10:44:16Z", "ms": 2133341055604.5088 }, "end": { "local": "2037-08-08T20:10:44+08:00", "utc": "2037-08-08T12:10:44Z", "ms": 2133346244092.0413 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "2037-08-09", "window": { "start": { "local": "2037-08-09T18:43:30+08:00", "utc": "2037-08-09T10:43:30Z", "ms": 2133427409886.446 }, "end": { "local": "2037-08-09T20:10:08+08:00", "utc": "2037-08-09T12:10:08Z", "ms": 2133432608321.9302 } }, "covered_min": 87, "window_min": 87, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:49 on Sun 9 Aug to 00:37 on Mon 10 Aug.", "fact": "2037-08-08T18:49:30Z → 2037-08-09T16:37:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:11 on the 8th, 18:43–20:10 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 86 minutes on the 8th and 87 of 87 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16025 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Sunday 9 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": "2037-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Sunday 9 August. Trayodaśī runs from 02:49 on Sun 9 Aug to 00:37 on Mon 10 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-08-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-09", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 289, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-08-10T00:37:13+08:00", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "end": { "local": "2037-08-10T21:51:51+08:00", "utc": "2037-08-10T13:51:51Z", "ms": 2133525111255.492 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-10T00:37:13+08:00", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "end": { "local": "2037-08-10T21:51:51+08:00", "utc": "2037-08-10T13:51:51Z", "ms": 2133525111255.492 } }, "kaala": "nishita", "days": [ { "local_date": "2037-08-09", "window": { "start": { "local": "2037-08-09T23:44:24+08:00", "utc": "2037-08-09T15:44:24Z", "ms": 2133445464019.5115 }, "end": { "local": "2037-08-10T00:32:24+08:00", "utc": "2037-08-09T16:32:24Z", "ms": 2133448344019.5115 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-08-10", "window": { "start": { "local": "2037-08-10T23:44:15+08:00", "utc": "2037-08-10T15:44:15Z", "ms": 2133531855036.7773 }, "end": { "local": "2037-08-11T00:32:15+08:00", "utc": "2037-08-10T16:32:15Z", "ms": 2133534735036.7773 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:37 on Mon 10 Aug to 21:52 on Mon 10 Aug.", "fact": "2037-08-09T16:37:13Z → 2037-08-10T13:51:51Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:44–00:32 on the 9th, 23:44–00:32 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 0 of 48 on the 10th.", "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 289 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Sunday 9 August.", "fact": "confidence: boundary (margin, 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": "2037-08-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-09", "confidence": "boundary" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Sunday 9 August. Caturdaśī runs from 00:37 on Mon 10 Aug to 21:52 on Mon 10 Aug, and reaches niśītha on neither day. It is 4 min 49 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-13", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 1, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-08-13T11:43:30+08:00", "utc": "2037-08-13T03:43:30Z", "ms": 2133747809682.0527 }, "end": { "local": "2037-08-14T08:14:38+08:00", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-13T11:43:30+08:00", "utc": "2037-08-13T03:43:30Z", "ms": 2133747809682.0527 }, "end": { "local": "2037-08-14T08:14:38+08:00", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-13", "window": { "start": { "local": "2037-08-13T11:43:31+08:00", "utc": "2037-08-13T03:43:31Z", "ms": 2133747810602.0781 }, "end": { "local": "2037-08-13T12:31:31+08:00", "utc": "2037-08-13T04:31:31Z", "ms": 2133750690602.0781 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-14", "window": { "start": { "local": "2037-08-14T11:43:19+08:00", "utc": "2037-08-14T03:43:19Z", "ms": 2133834199466.6829 }, "end": { "local": "2037-08-14T12:31:19+08:00", "utc": "2037-08-14T04:31:19Z", "ms": 2133837079466.6829 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:43 on Thu 13 Aug to 08:15 on Fri 14 Aug.", "fact": "2037-08-13T03:43:30Z → 2037-08-14T00:14:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 13th, 11:43–12:31 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1 s < 300 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Fuzhou, 2037: Thursday 13 August.", "fact": "confidence: boundary (margin)" } ], "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": "2037-08-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Madhusravā Tṛtīyā (Hariyali Teej) 2037 falls on Thursday 13 August. Tṛtīyā runs from 11:43 on Thu 13 Aug to 08:15 on Fri 14 Aug and covers all of madhyāhna that midday. It is 0 min 01 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-08-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12521, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-14T08:14:38+08:00", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "end": { "local": "2037-08-15T04:58:18+08:00", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-14T08:14:38+08:00", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "end": { "local": "2037-08-15T04:58:18+08:00", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-14", "window": { "start": { "local": "2037-08-14T11:43:19+08:00", "utc": "2037-08-14T03:43:19Z", "ms": 2133834199466.6829 }, "end": { "local": "2037-08-14T12:31:19+08:00", "utc": "2037-08-14T04:31:19Z", "ms": 2133837079466.6829 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-15", "window": { "start": { "local": "2037-08-15T11:43:08+08:00", "utc": "2037-08-15T03:43:08Z", "ms": 2133920587781.7007 }, "end": { "local": "2037-08-15T12:31:08+08:00", "utc": "2037-08-15T04:31:08Z", "ms": 2133923467781.7007 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:15 on Fri 14 Aug to 04:58 on Sat 15 Aug.", "fact": "2037-08-14T00:14:38Z → 2037-08-14T20:58:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 14th, 11:43–12:31 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12521 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Friday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Friday 14 August. Caturthī runs from 08:15 on Fri 14 Aug to 04:58 on Sat 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24290, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-08-15T04:58:18+08:00", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "end": { "local": "2037-08-16T02:02:55+08:00", "utc": "2037-08-15T18:02:55Z", "ms": 2133972175002.4663 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-15T04:58:18+08:00", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "end": { "local": "2037-08-16T02:02:55+08:00", "utc": "2037-08-15T18:02:55Z", "ms": 2133972175002.4663 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-15", "window": { "start": { "local": "2037-08-15T11:43:08+08:00", "utc": "2037-08-15T03:43:08Z", "ms": 2133920587781.7007 }, "end": { "local": "2037-08-15T12:31:08+08:00", "utc": "2037-08-15T04:31:08Z", "ms": 2133923467781.7007 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-16", "window": { "start": { "local": "2037-08-16T11:42:56+08:00", "utc": "2037-08-16T03:42:56Z", "ms": 2134006975553.6018 }, "end": { "local": "2037-08-16T12:30:56+08:00", "utc": "2037-08-16T04:30:56Z", "ms": 2134009855553.6018 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:58 on Sat 15 Aug to 02:03 on Sun 16 Aug.", "fact": "2037-08-14T20:58:18Z → 2037-08-15T18:02:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 15th, 11:43–12:31 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24290 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Fuzhou, 2037: Saturday 15 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Pañcamī 2037 falls on Saturday 15 August. Pañcamī runs from 04:58 on Sat 15 Aug to 02:03 on Sun 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-08-21", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33119, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-08-20T19:50:46+08:00", "utc": "2037-08-20T11:50:46Z", "ms": 2134381845668.0454 }, "end": { "local": "2037-08-21T20:26:51+08:00", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-20T19:50:46+08:00", "utc": "2037-08-20T11:50:46Z", "ms": 2134381845668.0454 }, "end": { "local": "2037-08-21T20:26:51+08:00", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-08-21", "window": { "start": { "local": "2037-08-21T05:38:23+08:00", "utc": "2037-08-20T21:38:23Z", "ms": 2134417103347.7432 }, "end": { "local": "2037-08-21T05:38:23+08:00", "utc": "2037-08-20T21:38:23Z", "ms": 2134417103347.7432 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-08-22", "window": { "start": { "local": "2037-08-22T05:38:50+08:00", "utc": "2037-08-21T21:38:50Z", "ms": 2134503529825.0283 }, "end": { "local": "2037-08-22T05:38:50+08:00", "utc": "2037-08-21T21:38:50Z", "ms": 2134503529825.0283 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:51 on Thu 20 Aug to 20:27 on Fri 21 Aug.", "fact": "2037-08-20T11:50:46Z → 2037-08-21T12:26:51Z" }, { "step": "kaala", "text": "Sunrise is at 05:38 on the 21st and 05:39 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33119 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Fuzhou, 2037: Friday 21 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": "2037-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Putradā Ekādaśī 2037 falls on Friday 21 August. Ekādaśī runs from 19:51 on Thu 20 Aug to 20:27 on Fri 21 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-08-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28625, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-08-21T20:26:51+08:00", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "end": { "local": "2037-08-22T21:33:46+08:00", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-21T20:26:51+08:00", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "end": { "local": "2037-08-22T21:33:46+08:00", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-21", "window": { "start": { "local": "2037-08-21T11:41:47+08:00", "utc": "2037-08-21T03:41:47Z", "ms": 2134438906615.6206 }, "end": { "local": "2037-08-21T12:29:47+08:00", "utc": "2037-08-21T04:29:47Z", "ms": 2134441786615.6206 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-08-22", "window": { "start": { "local": "2037-08-22T11:41:31+08:00", "utc": "2037-08-22T03:41:31Z", "ms": 2134525291358.444 }, "end": { "local": "2037-08-22T12:29:31+08:00", "utc": "2037-08-22T04:29:31Z", "ms": 2134528171358.444 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 20:27 on Fri 21 Aug to 21:34 on Sat 22 Aug.", "fact": "2037-08-21T12:26:51Z → 2037-08-22T13:33:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 21st, 11:42–12:30 on the 22nd.", "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 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 28625 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Fuzhou, 2037: Saturday 22 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Dāmodara Dvādaśī 2037 falls on Saturday 22 August. Dvādaśī runs from 20:27 on Fri 21 Aug to 21:34 on Sat 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-08-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5556, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-08-22T21:33:46+08:00", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "end": { "local": "2037-08-23T23:06:31+08:00", "utc": "2037-08-23T15:06:31Z", "ms": 2134652791213.7295 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-22T21:33:46+08:00", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "end": { "local": "2037-08-23T23:06:31+08:00", "utc": "2037-08-23T15:06:31Z", "ms": 2134652791213.7295 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-08-22", "window": { "start": { "local": "2037-08-22T18:32:13+08:00", "utc": "2037-08-22T10:32:13Z", "ms": 2134549932891.8599 }, "end": { "local": "2037-08-22T20:01:09+08:00", "utc": "2037-08-22T12:01:09Z", "ms": 2134555269319.2236 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "2037-08-23", "window": { "start": { "local": "2037-08-23T18:31:15+08:00", "utc": "2037-08-23T10:31:15Z", "ms": 2134636275195.8037 }, "end": { "local": "2037-08-23T20:00:23+08:00", "utc": "2037-08-23T12:00:23Z", "ms": 2134641622792.401 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:34 on Sat 22 Aug to 23:07 on Sun 23 Aug.", "fact": "2037-08-22T13:33:46Z → 2037-08-23T15:06:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:01 on the 22nd, 18:31–20:00 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 89 minutes on the 22nd and 89 of 89 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5556 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Sunday 23 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": "2037-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Sunday 23 August. Trayodaśī runs from 21:34 on Sat 22 Aug to 23:07 on Sun 23 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-08-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9070, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-08-25T01:00:02+08:00", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-26T03:09:23+08:00", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2037-08-25T14:03:02+08:00", "utc": "2037-08-25T06:03:02Z", "ms": 2134792981964.6987 }, "end": { "local": "2037-08-26T03:09:23+08:00", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 } }, "kaala": "day", "days": [ { "local_date": "2037-08-25", "window": { "start": { "local": "2037-08-25T05:40:08+08:00", "utc": "2037-08-24T21:40:08Z", "ms": 2134762808051.9424 }, "end": { "local": "2037-08-26T05:40:34+08:00", "utc": "2037-08-25T21:40:34Z", "ms": 2134849233750.2373 } }, "covered_min": 786, "window_min": 1440, "qualifies": true }, { "local_date": "2037-08-26", "window": { "start": { "local": "2037-08-26T05:40:34+08:00", "utc": "2037-08-25T21:40:34Z", "ms": 2134849233750.2373 }, "end": { "local": "2037-08-27T05:40:59+08:00", "utc": "2037-08-26T21:40:59Z", "ms": 2134935659274.0222 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:00 on Tue 25 Aug to 03:09 on Wed 26 Aug. Its second half begins at 14:03 on Tue 25 Aug.", "fact": "2037-08-24T17:00:02Z → 2037-08-25T19:09:23Z · second half from 2037-08-25T06:03:02Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:40 on the 25th, and from 05:41 on the 26th.", "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 786 of 1440 minutes on the 25th and 0 of 1440 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9070 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Fuzhou, 2037: Tuesday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Rakṣā Bandhana (Rakhi) 2037 falls on Tuesday 25 August. The second half of Pūrṇimā runs from 14:03 on Tue 25 Aug to 03:09 on Wed 26 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30663, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-08-25T01:00:02+08:00", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-26T03:09:23+08:00", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-25T01:00:02+08:00", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-26T03:09:23+08:00", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-25", "window": { "start": { "local": "2037-08-25T11:40:43+08:00", "utc": "2037-08-25T03:40:43Z", "ms": 2134784442924.9648 }, "end": { "local": "2037-08-25T12:28:43+08:00", "utc": "2037-08-25T04:28:43Z", "ms": 2134787322924.9648 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-26", "window": { "start": { "local": "2037-08-26T11:40:26+08:00", "utc": "2037-08-26T03:40:26Z", "ms": 2134870825950.2764 }, "end": { "local": "2037-08-26T12:28:26+08:00", "utc": "2037-08-26T04:28:26Z", "ms": 2134873705950.2764 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:00 on Tue 25 Aug to 03:09 on Wed 26 Aug.", "fact": "2037-08-24T17:00:02Z → 2037-08-25T19:09:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 25th, 11:40–12:28 on the 26th.", "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 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 30663 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Fuzhou, 2037: Tuesday 25 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": "2037-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṛṣi Tarpaṇa 2037 falls on Tuesday 25 August. Pūrṇimā runs from 01:00 on Tue 25 Aug to 03:09 on Wed 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37779, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-08-27T05:29:47+08:00", "utc": "2037-08-26T21:29:47Z", "ms": 2134934987073.375 }, "end": { "local": "2037-08-28T07:56:13+08:00", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-27T05:29:47+08:00", "utc": "2037-08-26T21:29:47Z", "ms": 2134934987073.375 }, "end": { "local": "2037-08-28T07:56:13+08:00", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-08-26", "window": { "start": { "local": "2037-08-26T19:00:08+08:00", "utc": "2037-08-26T11:00:08Z", "ms": 2134897208294.6262 }, "end": { "local": "2037-08-26T19:00:08+08:00", "utc": "2037-08-26T11:00:08Z", "ms": 2134897208294.6262 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-08-27", "window": { "start": { "local": "2037-08-27T19:34:12+08:00", "utc": "2037-08-27T11:34:12Z", "ms": 2134985652197.3247 }, "end": { "local": "2037-08-27T19:34:12+08:00", "utc": "2037-08-27T11:34:12Z", "ms": 2134985652197.3247 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 05:30 on Thu 27 Aug to 07:56 on Fri 28 Aug.", "fact": "2037-08-26T21:29:47Z → 2037-08-27T23:56:13Z" }, { "step": "kaala", "text": "Moonrise is at 19:00 on the 26th and 19:34 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 26th and is on the 27th.", "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 37779 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Fuzhou, 2037: Thursday 27 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": "2037-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Aśūnya Śayana Vrata 2037 falls on Thursday 27 August. Dvitīyā runs from 05:30 on Thu 27 Aug to 07:56 on Fri 28 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4594, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-08-28T07:56:13+08:00", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "end": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-28T07:56:13+08:00", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "end": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-28", "window": { "start": { "local": "2037-08-28T11:39:51+08:00", "utc": "2037-08-28T03:39:51Z", "ms": 2135043590862.8364 }, "end": { "local": "2037-08-28T12:27:51+08:00", "utc": "2037-08-28T04:27:51Z", "ms": 2135046470862.8364 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T11:39:33+08:00", "utc": "2037-08-29T03:39:33Z", "ms": 2135129972786.7612 }, "end": { "local": "2037-08-29T12:27:33+08:00", "utc": "2037-08-29T04:27:33Z", "ms": 2135132852786.7612 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:56 on Fri 28 Aug to 10:23 on Sat 29 Aug.", "fact": "2037-08-27T23:56:13Z → 2037-08-29T02:22:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 28th, 11:40–12:28 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4594 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Fuzhou, 2037: Friday 28 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": "2037-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Kajjalī Tṛtīyā (Kajari Teej) 2037 falls on Friday 28 August. Tṛtīyā runs from 07:56 on Fri 28 Aug to 10:23 on Sat 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11313, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T12:43:17+08:00", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T12:43:17+08:00", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T15:52:35+08:00", "utc": "2037-08-29T07:52:35Z", "ms": 2135145154557.1484 }, "end": { "local": "2037-08-29T18:25:16+08:00", "utc": "2037-08-29T10:25:16Z", "ms": 2135154315737.4067 } }, "covered_min": 153, "window_min": 153, "qualifies": true }, { "local_date": "2037-08-30", "window": { "start": { "local": "2037-08-30T15:51:50+08:00", "utc": "2037-08-30T07:51:50Z", "ms": 2135231510072.0886 }, "end": { "local": "2037-08-30T18:24:14+08:00", "utc": "2037-08-30T10:24:14Z", "ms": 2135240653866.504 } }, "covered_min": 0, "window_min": 152, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:23 on Sat 29 Aug to 12:43 on Sun 30 Aug.", "fact": "2037-08-29T02:22:59Z → 2037-08-30T04:43:17Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:53–18:25 on the 29th, 15:52–18:24 on the 30th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 153 of 153 minutes on the 29th and 0 of 152 on the 30th.", "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 11313 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Fuzhou, 2037: Saturday 29 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": "2037-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Bahulā Caturthī 2037 falls on Saturday 29 August. Caturthī runs from 10:23 on Sat 29 Aug to 12:43 on Sun 30 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-08-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30541, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T12:43:17+08:00", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-29T10:22:59+08:00", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T12:43:17+08:00", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T20:39:22+08:00", "utc": "2037-08-29T12:39:22Z", "ms": 2135162361954.3394 }, "end": { "local": "2037-08-29T20:39:22+08:00", "utc": "2037-08-29T12:39:22Z", "ms": 2135162361954.3394 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-08-30", "window": { "start": { "local": "2037-08-30T21:12:18+08:00", "utc": "2037-08-30T13:12:18Z", "ms": 2135250738086.6914 }, "end": { "local": "2037-08-30T21:12:18+08:00", "utc": "2037-08-30T13:12:18Z", "ms": 2135250738086.6914 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:23 on Sat 29 Aug to 12:43 on Sun 30 Aug.", "fact": "2037-08-29T02:22:59Z → 2037-08-30T04:43:17Z" }, { "step": "kaala", "text": "Moonrise is at 20:39 on the 29th and 21:12 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 29th and is not on the 30th.", "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 30541 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Saturday 29 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": "2037-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Saturday 29 August. Caturthī runs from 10:23 on Sat 29 Aug to 12:43 on Sun 30 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-08-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8532, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-08-31T14:49:07+08:00", "utc": "2037-08-31T06:49:07Z", "ms": 2135314147373.6814 }, "end": { "local": "2037-09-01T16:31:44+08:00", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-31T14:49:07+08:00", "utc": "2037-08-31T06:49:07Z", "ms": 2135314147373.6814 }, "end": { "local": "2037-09-01T16:31:44+08:00", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-31", "window": { "start": { "local": "2037-08-31T11:38:56+08:00", "utc": "2037-08-31T03:38:56Z", "ms": 2135302735662.545 }, "end": { "local": "2037-08-31T12:26:56+08:00", "utc": "2037-08-31T04:26:56Z", "ms": 2135305615662.545 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-01", "window": { "start": { "local": "2037-09-01T11:38:37+08:00", "utc": "2037-09-01T03:38:37Z", "ms": 2135389116651.582 }, "end": { "local": "2037-09-01T12:26:37+08:00", "utc": "2037-09-01T04:26:37Z", "ms": 2135391996651.582 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:49 on Mon 31 Aug to 16:32 on Tue 1 Sep.", "fact": "2037-08-31T06:49:07Z → 2037-09-01T08:31:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 31st, 11:39–12:27 on the 1st.", "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 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8532 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Fuzhou, 2037: Tuesday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Hala Ṣaṣṭhī 2037 falls on Tuesday 1 September. Ṣaṣṭhī runs from 14:49 on Mon 31 Aug to 16:32 on Tue 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19473, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-09-02T17:42:25+08:00", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "end": { "local": "2037-09-03T18:13:37+08:00", "utc": "2037-09-03T10:13:37Z", "ms": 2135585617187.988 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-02T17:42:25+08:00", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "end": { "local": "2037-09-03T18:13:37+08:00", "utc": "2037-09-03T10:13:37Z", "ms": 2135585617187.988 } }, "kaala": "nishita", "days": [ { "local_date": "2037-09-02", "window": { "start": { "local": "2037-09-02T23:38:30+08:00", "utc": "2037-09-02T15:38:30Z", "ms": 2135518709657.4736 }, "end": { "local": "2037-09-03T00:26:30+08:00", "utc": "2037-09-02T16:26:30Z", "ms": 2135521589657.4736 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-03", "window": { "start": { "local": "2037-09-03T23:38:10+08:00", "utc": "2037-09-03T15:38:10Z", "ms": 2135605090069.347 }, "end": { "local": "2037-09-04T00:26:10+08:00", "utc": "2037-09-03T16:26:10Z", "ms": 2135607970069.347 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 17:42 on Wed 2 Sep to 18:14 on Thu 3 Sep.", "fact": "2037-09-02T09:42:25Z → 2037-09-03T10:13:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 2nd, 23:38–00:26 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "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 19473 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Fuzhou, 2037: Wednesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Janmāṣṭamī 2037 falls on Wednesday 2 September. Aṣṭamī runs from 17:42 on Wed 2 Sep to 18:14 on Thu 3 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14708, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-09-01T16:31:44+08:00", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "end": { "local": "2037-09-02T17:42:25+08:00", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-01T16:31:44+08:00", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "end": { "local": "2037-09-02T17:42:25+08:00", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-01", "window": { "start": { "local": "2037-09-01T11:38:37+08:00", "utc": "2037-09-01T03:38:37Z", "ms": 2135389116651.582 }, "end": { "local": "2037-09-01T12:26:37+08:00", "utc": "2037-09-01T04:26:37Z", "ms": 2135391996651.582 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-02", "window": { "start": { "local": "2037-09-02T11:38:17+08:00", "utc": "2037-09-02T03:38:17Z", "ms": 2135475497366.0767 }, "end": { "local": "2037-09-02T12:26:17+08:00", "utc": "2037-09-02T04:26:17Z", "ms": 2135478377366.0767 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 16:32 on Tue 1 Sep to 17:42 on Wed 2 Sep.", "fact": "2037-09-01T08:31:44Z → 2037-09-02T09:42:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 1st, 11:38–12:26 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14708 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Fuzhou, 2037: Wednesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Śītalā Saptamī 2037 falls on Wednesday 2 September. Saptamī runs from 16:32 on Tue 1 Sep to 17:42 on Wed 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-09-06", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34096, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-09-05T16:59:42+08:00", "utc": "2037-09-05T08:59:42Z", "ms": 2135753981816.954 }, "end": { "local": "2037-09-06T15:13:24+08:00", "utc": "2037-09-06T07:13:24Z", "ms": 2135834003603.6538 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-05T16:59:42+08:00", "utc": "2037-09-05T08:59:42Z", "ms": 2135753981816.954 }, "end": { "local": "2037-09-06T15:13:24+08:00", "utc": "2037-09-06T07:13:24Z", "ms": 2135834003603.6538 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-09-05", "window": { "start": { "local": "2037-09-05T05:44:43+08:00", "utc": "2037-09-04T21:44:43Z", "ms": 2135713482783.2144 }, "end": { "local": "2037-09-05T05:44:43+08:00", "utc": "2037-09-04T21:44:43Z", "ms": 2135713482783.2144 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-06", "window": { "start": { "local": "2037-09-06T05:45:07+08:00", "utc": "2037-09-05T21:45:07Z", "ms": 2135799907116.582 }, "end": { "local": "2037-09-06T05:45:07+08:00", "utc": "2037-09-05T21:45:07Z", "ms": 2135799907116.582 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:00 on Sat 5 Sep to 15:13 on Sun 6 Sep.", "fact": "2037-09-05T08:59:42Z → 2037-09-06T07:13:24Z" }, { "step": "kaala", "text": "Sunrise is at 05:45 on the 5th and 05:45 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 34096 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Fuzhou, 2037: Sunday 6 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": "2037-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Ajā Ekādaśī 2037 falls on Sunday 6 September. Ekādaśī runs from 17:00 on Sat 5 Sep to 15:13 on Sun 6 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-09-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19826, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-09-07T12:45:18+08:00", "utc": "2037-09-07T04:45:18Z", "ms": 2135911517818.0137 }, "end": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-07T12:45:18+08:00", "utc": "2037-09-07T04:45:18Z", "ms": 2135911517818.0137 }, "end": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-07", "window": { "start": { "local": "2037-09-07T18:15:44+08:00", "utc": "2037-09-07T10:15:44Z", "ms": 2135931343510.6675 }, "end": { "local": "2037-09-07T19:47:45+08:00", "utc": "2037-09-07T11:47:45Z", "ms": 2135936865121.8916 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T18:14:38+08:00", "utc": "2037-09-08T10:14:38Z", "ms": 2136017678171.6755 }, "end": { "local": "2037-09-08T19:46:52+08:00", "utc": "2037-09-08T11:46:52Z", "ms": 2136023211715.9595 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:45 on Mon 7 Sep to 09:42 on Tue 8 Sep.", "fact": "2037-09-07T04:45:18Z → 2037-09-08T01:42:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:16–19:48 on the 7th, 18:15–19:47 on the 8th.", "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 7th and 0 of 92 on the 8th.", "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 19826 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Monday 7 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": "2037-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Monday 7 September. Trayodaśī runs from 12:45 on Mon 7 Sep to 09:42 on Tue 8 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-09-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30756, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T06:12:09+08:00", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T06:12:09+08:00", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T18:14:38+08:00", "utc": "2037-09-08T10:14:38Z", "ms": 2136017678171.6755 }, "end": { "local": "2037-09-08T19:46:52+08:00", "utc": "2037-09-08T11:46:52Z", "ms": 2136023211715.9595 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "2037-09-09", "window": { "start": { "local": "2037-09-09T18:13:33+08:00", "utc": "2037-09-09T10:13:33Z", "ms": 2136104012567.4836 }, "end": { "local": "2037-09-09T19:45:58+08:00", "utc": "2037-09-09T11:45:58Z", "ms": 2136109558074.1672 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:42 on Tue 8 Sep to 06:12 on Wed 9 Sep.", "fact": "2037-09-08T01:42:02Z → 2037-09-08T22:12:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:15–19:47 on the 8th, 18:14–19:46 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 92 of 92 minutes on the 8th and 0 of 92 on the 9th.", "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 30756 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Fuzhou, 2037: Tuesday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Aghora Caturdaśī 2037 falls on Tuesday 8 September. Caturdaśī runs from 09:42 on Tue 8 Sep to 06:12 on Wed 9 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shivaratri?on=2037-09-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20860, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T06:12:09+08:00", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-08T09:42:02+08:00", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T06:12:09+08:00", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 } }, "kaala": "nishita", "days": [ { "local_date": "2037-09-07", "window": { "start": { "local": "2037-09-07T23:36:50+08:00", "utc": "2037-09-07T15:36:50Z", "ms": 2135950609552.7583 }, "end": { "local": "2037-09-08T00:24:50+08:00", "utc": "2037-09-07T16:24:50Z", "ms": 2135953489552.7583 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T23:36:29+08:00", "utc": "2037-09-08T15:36:29Z", "ms": 2136036988962.74 }, "end": { "local": "2037-09-09T00:24:29+08:00", "utc": "2037-09-08T16:24:29Z", "ms": 2136039868962.74 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:42 on Tue 8 Sep to 06:12 on Wed 9 Sep.", "fact": "2037-09-08T01:42:02Z → 2037-09-08T22:12:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:37–00:25 on the 7th, 23:36–00:24 on the 8th.", "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 7th and 48 of 48 on the 8th.", "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 20860 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Tuesday 8 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": "2037-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Tuesday 8 September. Caturdaśī runs from 09:42 on Tue 8 Sep to 06:12 on Wed 9 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-09-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33003, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-09-10T02:25:32+08:00", "utc": "2037-09-09T18:25:32Z", "ms": 2136133531877.5342 }, "end": { "local": "2037-09-10T22:32:51+08:00", "utc": "2037-09-10T14:32:51Z", "ms": 2136205971056.1753 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-10T02:25:32+08:00", "utc": "2037-09-09T18:25:32Z", "ms": 2136133531877.5342 }, "end": { "local": "2037-09-10T22:32:51+08:00", "utc": "2037-09-10T14:32:51Z", "ms": 2136205971056.1753 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-10", "window": { "start": { "local": "2037-09-10T11:35:35+08:00", "utc": "2037-09-10T03:35:35Z", "ms": 2136166535293.7495 }, "end": { "local": "2037-09-10T12:23:35+08:00", "utc": "2037-09-10T04:23:35Z", "ms": 2136169415293.7495 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-11", "window": { "start": { "local": "2037-09-11T11:35:14+08:00", "utc": "2037-09-11T03:35:14Z", "ms": 2136252914295.4355 }, "end": { "local": "2037-09-11T12:23:14+08:00", "utc": "2037-09-11T04:23:14Z", "ms": 2136255794295.4355 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:26 on Thu 10 Sep to 22:33 on Thu 10 Sep.", "fact": "2037-09-09T18:25:32Z → 2037-09-10T14:32:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 10th, 11:35–12:23 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33003 s" }, { "step": "ruling", "text": "Rudra Vrata, Fuzhou, 2037: Thursday 10 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Rudra Vrata 2037 falls on Thursday 10 September. Pratipadā runs from 02:26 on Thu 10 Sep to 22:33 on Thu 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10225, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-09-11T18:45:08+08:00", "utc": "2037-09-11T10:45:08Z", "ms": 2136278708156.28 }, "end": { "local": "2037-09-12T15:13:18+08:00", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-11T18:45:08+08:00", "utc": "2037-09-11T10:45:08Z", "ms": 2136278708156.28 }, "end": { "local": "2037-09-12T15:13:18+08:00", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-11", "window": { "start": { "local": "2037-09-11T11:35:14+08:00", "utc": "2037-09-11T03:35:14Z", "ms": 2136252914295.4355 }, "end": { "local": "2037-09-11T12:23:14+08:00", "utc": "2037-09-11T04:23:14Z", "ms": 2136255794295.4355 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-12", "window": { "start": { "local": "2037-09-12T11:34:53+08:00", "utc": "2037-09-12T03:34:53Z", "ms": 2136339293180.546 }, "end": { "local": "2037-09-12T12:22:53+08:00", "utc": "2037-09-12T04:22:53Z", "ms": 2136342173180.546 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 18:45 on Fri 11 Sep to 15:13 on Sat 12 Sep.", "fact": "2037-09-11T10:45:08Z → 2037-09-12T07:13:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 11th, 11:35–12:23 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10225 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Fuzhou, 2037: Saturday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Haritālikā Vrata (Hartalika Teej) 2037 falls on Saturday 12 September. Tṛtīyā runs from 18:45 on Fri 11 Sep to 15:13 on Sat 12 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 892, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-09-12T15:13:18+08:00", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "end": { "local": "2037-09-13T12:07:40+08:00", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-12T15:13:18+08:00", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "end": { "local": "2037-09-13T12:07:40+08:00", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-12", "window": { "start": { "local": "2037-09-12T11:34:53+08:00", "utc": "2037-09-12T03:34:53Z", "ms": 2136339293180.546 }, "end": { "local": "2037-09-12T12:22:53+08:00", "utc": "2037-09-12T04:22:53Z", "ms": 2136342173180.546 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-13", "window": { "start": { "local": "2037-09-13T11:34:32+08:00", "utc": "2037-09-13T03:34:32Z", "ms": 2136425671963.8838 }, "end": { "local": "2037-09-13T12:22:32+08:00", "utc": "2037-09-13T04:22:32Z", "ms": 2136428551963.8838 } }, "covered_min": 33, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:13 on Sat 12 Sep to 12:08 on Sun 13 Sep.", "fact": "2037-09-12T07:13:18Z → 2037-09-13T04:07:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 12th, 11:35–12:23 on the 13th.", "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 12th and 33 of 48 on the 13th.", "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 892 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Fuzhou, 2037: Sunday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṇeśa Caturthī 2037 falls on Sunday 13 September. Caturthī runs from 15:13 on Sat 12 Sep to 12:08 on Sun 13 Sep and covers 33 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 892, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-09-13T12:07:40+08:00", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "end": { "local": "2037-09-14T09:37:20+08:00", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-13T12:07:40+08:00", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "end": { "local": "2037-09-14T09:37:20+08:00", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-13", "window": { "start": { "local": "2037-09-13T11:34:32+08:00", "utc": "2037-09-13T03:34:32Z", "ms": 2136425671963.8838 }, "end": { "local": "2037-09-13T12:22:32+08:00", "utc": "2037-09-13T04:22:32Z", "ms": 2136428551963.8838 } }, "covered_min": 15, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-14", "window": { "start": { "local": "2037-09-14T11:34:11+08:00", "utc": "2037-09-14T03:34:11Z", "ms": 2136512050661.758 }, "end": { "local": "2037-09-14T12:22:11+08:00", "utc": "2037-09-14T04:22:11Z", "ms": 2136514930661.758 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:08 on Sun 13 Sep to 09:37 on Mon 14 Sep.", "fact": "2037-09-13T04:07:40Z → 2037-09-14T01:37:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 13th, 11:34–12:22 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 15 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 892 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Fuzhou, 2037: Sunday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṛṣi Pañcamī 2037 falls on Sunday 13 September. Pañcamī runs from 12:08 on Sun 13 Sep to 09:37 on Mon 14 Sep and covers 15 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7011, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-09-14T09:37:20+08:00", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "end": { "local": "2037-09-15T07:49:27+08:00", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-14T09:37:20+08:00", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "end": { "local": "2037-09-15T07:49:27+08:00", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-14", "window": { "start": { "local": "2037-09-14T11:34:11+08:00", "utc": "2037-09-14T03:34:11Z", "ms": 2136512050661.758 }, "end": { "local": "2037-09-14T12:22:11+08:00", "utc": "2037-09-14T04:22:11Z", "ms": 2136514930661.758 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-15", "window": { "start": { "local": "2037-09-15T11:33:49+08:00", "utc": "2037-09-15T03:33:49Z", "ms": 2136598429291.801 }, "end": { "local": "2037-09-15T12:21:49+08:00", "utc": "2037-09-15T04:21:49Z", "ms": 2136601309291.801 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:37 on Mon 14 Sep to 07:49 on Tue 15 Sep.", "fact": "2037-09-14T01:37:20Z → 2037-09-14T23:49:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 14th, 11:34–12:22 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7011 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Fuzhou, 2037: Monday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Sūrya Ṣaṣṭhī (Bhādrapada) 2037 falls on Monday 14 September. Ṣaṣṭhī runs from 09:37 on Mon 14 Sep to 07:49 on Tue 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13462, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-09-15T07:49:27+08:00", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "end": { "local": "2037-09-16T06:48:32+08:00", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-15T07:49:27+08:00", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "end": { "local": "2037-09-16T06:48:32+08:00", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-15", "window": { "start": { "local": "2037-09-15T11:33:49+08:00", "utc": "2037-09-15T03:33:49Z", "ms": 2136598429291.801 }, "end": { "local": "2037-09-15T12:21:49+08:00", "utc": "2037-09-15T04:21:49Z", "ms": 2136601309291.801 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-16", "window": { "start": { "local": "2037-09-16T11:33:28+08:00", "utc": "2037-09-16T03:33:28Z", "ms": 2136684807872.8867 }, "end": { "local": "2037-09-16T12:21:28+08:00", "utc": "2037-09-16T04:21:28Z", "ms": 2136687687872.8867 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:49 on Tue 15 Sep to 06:49 on Wed 16 Sep.", "fact": "2037-09-14T23:49:27Z → 2037-09-15T22:48:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 15th, 11:33–12:21 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13462 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Fuzhou, 2037: Tuesday 15 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Muktābharaṇa Vrata 2037 falls on Tuesday 15 September. Saptamī runs from 07:49 on Tue 15 Sep to 06:49 on Wed 16 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17096, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-09-16T06:48:32+08:00", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "end": { "local": "2037-09-17T06:35:44+08:00", "utc": "2037-09-16T22:35:44Z", "ms": 2136753344416.4707 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-16T06:48:32+08:00", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "end": { "local": "2037-09-17T06:35:44+08:00", "utc": "2037-09-16T22:35:44Z", "ms": 2136753344416.4707 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-16", "window": { "start": { "local": "2037-09-16T11:33:28+08:00", "utc": "2037-09-16T03:33:28Z", "ms": 2136684807872.8867 }, "end": { "local": "2037-09-16T12:21:28+08:00", "utc": "2037-09-16T04:21:28Z", "ms": 2136687687872.8867 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-17", "window": { "start": { "local": "2037-09-17T11:33:06+08:00", "utc": "2037-09-17T03:33:06Z", "ms": 2136771186424.9626 }, "end": { "local": "2037-09-17T12:21:06+08:00", "utc": "2037-09-17T04:21:06Z", "ms": 2136774066424.9626 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:49 on Wed 16 Sep to 06:36 on Thu 17 Sep.", "fact": "2037-09-15T22:48:32Z → 2037-09-16T22:35:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 16th, 11:33–12:21 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17096 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Fuzhou, 2037: Wednesday 16 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Rādhāṣṭamī 2037 falls on Wednesday 16 September. Aṣṭamī runs from 06:49 on Wed 16 Sep to 06:36 on Thu 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-09-20", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9069, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-09-19T08:21:29+08:00", "utc": "2037-09-19T00:21:29Z", "ms": 2136932489148.8794 }, "end": { "local": "2037-09-20T10:06:14+08:00", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-19T08:21:29+08:00", "utc": "2037-09-19T00:21:29Z", "ms": 2136932489148.8794 }, "end": { "local": "2037-09-20T10:06:14+08:00", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-09-19", "window": { "start": { "local": "2037-09-19T05:50:20+08:00", "utc": "2037-09-18T21:50:20Z", "ms": 2136923420149.2256 }, "end": { "local": "2037-09-19T05:50:20+08:00", "utc": "2037-09-18T21:50:20Z", "ms": 2136923420149.2256 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-20", "window": { "start": { "local": "2037-09-20T05:50:44+08:00", "utc": "2037-09-19T21:50:44Z", "ms": 2137009844305.2559 }, "end": { "local": "2037-09-20T05:50:44+08:00", "utc": "2037-09-19T21:50:44Z", "ms": 2137009844305.2559 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:21 on Sat 19 Sep to 10:06 on Sun 20 Sep.", "fact": "2037-09-19T00:21:29Z → 2037-09-20T02:06:14Z" }, { "step": "kaala", "text": "Sunrise is at 05:50 on the 19th and 05:51 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 9069 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Fuzhou, 2037: Sunday 20 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": "2037-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Parivartanī Ekādaśī 2037 falls on Sunday 20 September. Ekādaśī runs from 08:21 on Sat 19 Sep to 10:06 on Sun 20 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 355, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-09-20T10:06:14+08:00", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "end": { "local": "2037-09-21T12:13:46+08:00", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-20T10:06:14+08:00", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "end": { "local": "2037-09-21T12:13:46+08:00", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-20", "window": { "start": { "local": "2037-09-20T11:32:02+08:00", "utc": "2037-09-20T03:32:02Z", "ms": 2137030322118.9043 }, "end": { "local": "2037-09-20T12:20:02+08:00", "utc": "2037-09-20T04:20:02Z", "ms": 2137033202118.9043 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-21", "window": { "start": { "local": "2037-09-21T11:31:41+08:00", "utc": "2037-09-21T03:31:41Z", "ms": 2137116700769.6997 }, "end": { "local": "2037-09-21T12:19:41+08:00", "utc": "2037-09-21T04:19:41Z", "ms": 2137119580769.6997 } }, "covered_min": 42, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:06 on Sun 20 Sep to 12:14 on Mon 21 Sep.", "fact": "2037-09-20T02:06:14Z → 2037-09-21T04:13:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 20th, 11:32–12:20 on the 21st.", "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 20th and 42 of 48 on the 21st.", "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 355 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Fuzhou, 2037: Sunday 20 September.", "fact": "confidence: boundary (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": "2037-09-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-20", "confidence": "boundary" } ], "quote": "In Fuzhou, Vāmana Jayantī 2037 falls on Sunday 20 September. Dvādaśī runs from 10:06 on Sun 20 Sep to 12:14 on Mon 21 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 42 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-09-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12228, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-09-21T12:13:46+08:00", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "end": { "local": "2037-09-22T14:35:18+08:00", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-21T12:13:46+08:00", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "end": { "local": "2037-09-22T14:35:18+08:00", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-21", "window": { "start": { "local": "2037-09-21T18:00:13+08:00", "utc": "2037-09-21T10:00:13Z", "ms": 2137140012999.5383 }, "end": { "local": "2037-09-21T19:35:04+08:00", "utc": "2037-09-21T11:35:04Z", "ms": 2137145703648.9246 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2037-09-22", "window": { "start": { "local": "2037-09-22T17:59:06+08:00", "utc": "2037-09-22T09:59:06Z", "ms": 2137226346132.9233 }, "end": { "local": "2037-09-22T19:34:09+08:00", "utc": "2037-09-22T11:34:09Z", "ms": 2137232048956.9053 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:14 on Mon 21 Sep to 14:35 on Tue 22 Sep.", "fact": "2037-09-21T04:13:46Z → 2037-09-22T06:35:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:35 on the 21st, 17:59–19:34 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 95 of 95 minutes on the 21st and 0 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 12228 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Monday 21 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": "2037-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Monday 21 September. Trayodaśī runs from 12:14 on Mon 21 Sep to 14:35 on Tue 22 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-09-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22694, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-22T14:35:18+08:00", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "end": { "local": "2037-09-23T17:03:17+08:00", "utc": "2037-09-23T09:03:17Z", "ms": 2137309397100.2258 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-22T14:35:18+08:00", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "end": { "local": "2037-09-23T17:03:17+08:00", "utc": "2037-09-23T09:03:17Z", "ms": 2137309397100.2258 } }, "kaala": "udaya-3", "days": [ { "local_date": "2037-09-22", "window": { "start": { "local": "2037-09-22T05:51:33+08:00", "utc": "2037-09-21T21:51:33Z", "ms": 2137182692869.9355 }, "end": { "local": "2037-09-22T08:17:04+08:00", "utc": "2037-09-22T00:17:04Z", "ms": 2137191423522.5332 } }, "covered_min": 0, "window_min": 146, "qualifies": false }, { "local_date": "2037-09-23", "window": { "start": { "local": "2037-09-23T05:51:57+08:00", "utc": "2037-09-22T21:51:57Z", "ms": 2137269117312.787 }, "end": { "local": "2037-09-23T08:17:10+08:00", "utc": "2037-09-23T00:17:10Z", "ms": 2137277829722.578 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:35 on Tue 22 Sep to 17:03 on Wed 23 Sep.", "fact": "2037-09-22T06:35:18Z → 2037-09-23T09:03:17Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:52–08:17 on the 22nd, 05:52–08:17 on the 23rd.", "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 146 minutes on the 22nd and 145 of 145 on the 23rd.", "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 22694 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Fuzhou, 2037: Wednesday 23 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": "2037-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Ananta Caturdaśī 2037 falls on Wednesday 23 September. Caturdaśī runs from 14:35 on Tue 22 Sep to 17:03 on Wed 23 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-09-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23287, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-09-28T02:15:35+08:00", "utc": "2037-09-27T18:15:35Z", "ms": 2137688134630.937 }, "end": { "local": "2037-09-29T04:01:44+08:00", "utc": "2037-09-28T20:01:44Z", "ms": 2137780904395.8237 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-09-28T02:15:35+08:00", "utc": "2037-09-27T18:15:35Z", "ms": 2137688134630.937 }, "end": { "local": "2037-09-29T04:01:44+08:00", "utc": "2037-09-28T20:01:44Z", "ms": 2137780904395.8237 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-09-27", "window": { "start": { "local": "2037-09-27T19:47:27+08:00", "utc": "2037-09-27T11:47:27Z", "ms": 2137664847286.503 }, "end": { "local": "2037-09-27T19:47:27+08:00", "utc": "2037-09-27T11:47:27Z", "ms": 2137664847286.503 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-28", "window": { "start": { "local": "2037-09-28T20:23:22+08:00", "utc": "2037-09-28T12:23:22Z", "ms": 2137753401693.919 }, "end": { "local": "2037-09-28T20:23:22+08:00", "utc": "2037-09-28T12:23:22Z", "ms": 2137753401693.919 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:16 on Mon 28 Sep to 04:02 on Tue 29 Sep.", "fact": "2037-09-27T18:15:35Z → 2037-09-28T20:01:44Z" }, { "step": "kaala", "text": "Moonrise is at 19:47 on the 27th and 20:23 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 27th and is on the 28th.", "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 23287 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Monday 28 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": "2037-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Monday 28 September. Caturthī runs from 02:16 on Mon 28 Sep to 04:02 on Tue 29 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-09-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30140, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-09-30T05:24:41+08:00", "utc": "2037-09-29T21:24:41Z", "ms": 2137872281280.123 }, "end": { "local": "2037-10-01T06:18:01+08:00", "utc": "2037-09-30T22:18:01Z", "ms": 2137961881081.1953 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-09-30T05:24:41+08:00", "utc": "2037-09-29T21:24:41Z", "ms": 2137872281280.123 }, "end": { "local": "2037-10-01T06:18:01+08:00", "utc": "2037-09-30T22:18:01Z", "ms": 2137961881081.1953 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-09-29", "window": { "start": { "local": "2037-09-29T21:02:22+08:00", "utc": "2037-09-29T13:02:22Z", "ms": 2137842141749.985 }, "end": { "local": "2037-09-29T21:02:22+08:00", "utc": "2037-09-29T13:02:22Z", "ms": 2137842141749.985 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-30", "window": { "start": { "local": "2037-09-30T21:45:24+08:00", "utc": "2037-09-30T13:45:24Z", "ms": 2137931124345.143 }, "end": { "local": "2037-09-30T21:45:24+08:00", "utc": "2037-09-30T13:45:24Z", "ms": 2137931124345.143 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:25 on Wed 30 Sep to 06:18 on Thu 1 Oct.", "fact": "2037-09-29T21:24:41Z → 2037-09-30T22:18:01Z" }, { "step": "kaala", "text": "Moonrise is at 21:02 on the 29th and 21:45 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 29th and is on the 30th.", "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 30140 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Fuzhou, 2037: Wednesday 30 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": "2037-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-30", "confidence": "determinate" } ], "quote": "In Fuzhou, Candra Ṣaṣṭhī 2037 falls on Wednesday 30 September. Ṣaṣṭhī runs from 05:25 on Wed 30 Sep to 06:18 on Thu 1 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38832, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-02T06:35:33+08:00", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T06:12:24+08:00", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-02T06:35:33+08:00", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T06:12:24+08:00", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-01", "window": { "start": { "local": "2037-10-01T17:49:12+08:00", "utc": "2037-10-01T09:49:12Z", "ms": 2138003352122.609 }, "end": { "local": "2037-10-01T19:26:05+08:00", "utc": "2037-10-01T11:26:05Z", "ms": 2138009164544.043 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2037-10-02", "window": { "start": { "local": "2037-10-02T17:48:08+08:00", "utc": "2037-10-02T09:48:08Z", "ms": 2138089687518.012 }, "end": { "local": "2037-10-02T19:25:12+08:00", "utc": "2037-10-02T11:25:12Z", "ms": 2138095512090.5989 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:36 on Fri 2 Oct to 06:12 on Sat 3 Oct.", "fact": "2037-10-01T22:35:33Z → 2037-10-02T22:12:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:49–19:26 on the 1st, 17:48–19:25 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 97 minutes on the 1st and 97 of 97 on the 2nd.", "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 38832 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Fuzhou, 2037: Friday 2 October.", "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": "2037-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Jitāṣṭamī (Jitiya) 2037 falls on Friday 2 October. Aṣṭamī runs from 06:36 on Fri 2 Oct to 06:12 on Sat 3 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24365, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-02T06:35:33+08:00", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T06:12:24+08:00", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-02T06:35:33+08:00", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T06:12:24+08:00", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-01", "window": { "start": { "local": "2037-10-01T22:33:16+08:00", "utc": "2037-10-01T14:33:16Z", "ms": 2138020395963.7488 }, "end": { "local": "2037-10-01T22:33:16+08:00", "utc": "2037-10-01T14:33:16Z", "ms": 2138020395963.7488 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-10-02", "window": { "start": { "local": "2037-10-02T23:26:19+08:00", "utc": "2037-10-02T15:26:19Z", "ms": 2138109979288.0503 }, "end": { "local": "2037-10-02T23:26:19+08:00", "utc": "2037-10-02T15:26:19Z", "ms": 2138109979288.0503 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:36 on Fri 2 Oct to 06:12 on Sat 3 Oct.", "fact": "2037-10-01T22:35:33Z → 2037-10-02T22:12:24Z" }, { "step": "kaala", "text": "Moonrise is at 22:33 on the 1st and 23:26 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 1st and is on the 2nd.", "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 24365 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Fuzhou, 2037: Friday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahālakṣmī Vrata Samāpana 2037 falls on Friday 2 October. Aṣṭamī runs from 06:36 on Fri 2 Oct to 06:12 on Sat 3 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-10-05", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9654, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-10-05T03:16:12+08:00", "utc": "2037-10-04T19:16:12Z", "ms": 2138296571629.9736 }, "end": { "local": "2037-10-06T00:46:27+08:00", "utc": "2037-10-05T16:46:27Z", "ms": 2138373986881.2388 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-05T03:16:12+08:00", "utc": "2037-10-04T19:16:12Z", "ms": 2138296571629.9736 }, "end": { "local": "2037-10-06T00:46:27+08:00", "utc": "2037-10-05T16:46:27Z", "ms": 2138373986881.2388 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-10-05", "window": { "start": { "local": "2037-10-05T05:57:06+08:00", "utc": "2037-10-04T21:57:06Z", "ms": 2138306225770.7295 }, "end": { "local": "2037-10-05T05:57:06+08:00", "utc": "2037-10-04T21:57:06Z", "ms": 2138306225770.7295 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-06", "window": { "start": { "local": "2037-10-06T05:57:33+08:00", "utc": "2037-10-05T21:57:33Z", "ms": 2138392653223.1992 }, "end": { "local": "2037-10-06T05:57:33+08:00", "utc": "2037-10-05T21:57:33Z", "ms": 2138392653223.1992 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:16 on Mon 5 Oct to 00:46 on Tue 6 Oct.", "fact": "2037-10-04T19:16:12Z → 2037-10-05T16:46:27Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 5th and 05:58 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not 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 9654 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Fuzhou, 2037: Monday 5 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": "2037-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Indirā Ekādaśī 2037 falls on Monday 5 October. Ekādaśī runs from 03:16 on Mon 5 Oct to 00:46 on Tue 6 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-10-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1783, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-10-06T21:42:32+08:00", "utc": "2037-10-06T13:42:32Z", "ms": 2138449351985.1414 }, "end": { "local": "2037-10-07T18:12:33+08:00", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-06T21:42:32+08:00", "utc": "2037-10-06T13:42:32Z", "ms": 2138449351985.1414 }, "end": { "local": "2037-10-07T18:12:33+08:00", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-06", "window": { "start": { "local": "2037-10-06T17:43:53+08:00", "utc": "2037-10-06T09:43:53Z", "ms": 2138435033206.0413 }, "end": { "local": "2037-10-06T19:21:46+08:00", "utc": "2037-10-06T11:21:46Z", "ms": 2138440906245.7874 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2037-10-07", "window": { "start": { "local": "2037-10-07T17:42:51+08:00", "utc": "2037-10-07T09:42:51Z", "ms": 2138521370785.3882 }, "end": { "local": "2037-10-07T19:20:56+08:00", "utc": "2037-10-07T11:20:56Z", "ms": 2138527255896.8467 } }, "covered_min": 30, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:43 on Tue 6 Oct to 18:13 on Wed 7 Oct.", "fact": "2037-10-06T13:42:32Z → 2037-10-07T10:12:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:44–19:22 on the 6th, 17:43–19:21 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 30 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 1783 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Wednesday 7 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": "2037-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Wednesday 7 October. Trayodaśī runs from 21:43 on Tue 6 Oct to 18:13 on Wed 7 Oct and covers 30 of 98 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-10-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18847, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-10-07T18:12:33+08:00", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "end": { "local": "2037-10-08T14:26:17+08:00", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-07T18:12:33+08:00", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "end": { "local": "2037-10-08T14:26:17+08:00", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 } }, "kaala": "nishita", "days": [ { "local_date": "2037-10-07", "window": { "start": { "local": "2037-10-07T23:26:40+08:00", "utc": "2037-10-07T15:26:40Z", "ms": 2138541999953.3574 }, "end": { "local": "2037-10-08T00:14:40+08:00", "utc": "2037-10-07T16:14:40Z", "ms": 2138544879953.3574 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-10-08", "window": { "start": { "local": "2037-10-08T23:26:23+08:00", "utc": "2037-10-08T15:26:23Z", "ms": 2138628383228.9473 }, "end": { "local": "2037-10-09T00:14:23+08:00", "utc": "2037-10-08T16:14:23Z", "ms": 2138631263228.9473 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:13 on Wed 7 Oct to 14:26 on Thu 8 Oct.", "fact": "2037-10-07T10:12:33Z → 2037-10-08T06:26:17Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:27–00:15 on the 7th, 23:26–00:14 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18847 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Wednesday 7 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Wednesday 7 October. Caturdaśī runs from 18:13 on Wed 7 Oct to 14:26 on Thu 8 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3292, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-10-08T14:26:17+08:00", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "end": { "local": "2037-10-09T10:34:35+08:00", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-08T14:26:17+08:00", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "end": { "local": "2037-10-09T10:34:35+08:00", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 } }, "kaala": "aparahna", "days": [ { "local_date": "2037-10-08", "window": { "start": { "local": "2037-10-08T13:00:29+08:00", "utc": "2037-10-08T05:00:29Z", "ms": 2138590828974.529 }, "end": { "local": "2037-10-08T15:21:09+08:00", "utc": "2037-10-08T07:21:09Z", "ms": 2138599268925.5967 } }, "covered_min": 55, "window_min": 141, "qualifies": true }, { "local_date": "2037-10-09", "window": { "start": { "local": "2037-10-09T13:00:04+08:00", "utc": "2037-10-09T05:00:04Z", "ms": 2138677203534.2283 }, "end": { "local": "2037-10-09T15:20:26+08:00", "utc": "2037-10-09T07:20:26Z", "ms": 2138685625518.561 } }, "covered_min": 0, "window_min": 140, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:26 on Thu 8 Oct to 10:35 on Fri 9 Oct.", "fact": "2037-10-08T06:26:17Z → 2037-10-09T02:34:35Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:00–15:21 on the 8th, 13:00–15:20 on the 9th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 55 of 141 minutes on the 8th and 0 of 140 on the 9th.", "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 3292 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Fuzhou, 2037: Thursday 8 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahālaya Amāvāsyā 2037 falls on Thursday 8 October. Amāvasyā runs from 14:26 on Thu 8 Oct to 10:35 on Fri 9 Oct and covers 55 of 141 minutes of aparāhṇa that afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3078, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-10-09T10:34:35+08:00", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "end": { "local": "2037-10-10T06:48:55+08:00", "utc": "2037-10-09T22:48:55Z", "ms": 2138741334836.843 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-09T10:34:35+08:00", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "end": { "local": "2037-10-10T06:48:55+08:00", "utc": "2037-10-09T22:48:55Z", "ms": 2138741334836.843 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-09", "window": { "start": { "local": "2037-10-09T11:25:53+08:00", "utc": "2037-10-09T03:25:53Z", "ms": 2138671552542.062 }, "end": { "local": "2037-10-09T12:13:53+08:00", "utc": "2037-10-09T04:13:53Z", "ms": 2138674432542.062 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-10-10", "window": { "start": { "local": "2037-10-10T11:25:37+08:00", "utc": "2037-10-10T03:25:37Z", "ms": 2138757936538.1 }, "end": { "local": "2037-10-10T12:13:37+08:00", "utc": "2037-10-10T04:13:37Z", "ms": 2138760816538.1 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 10:35 on Fri 9 Oct to 06:49 on Sat 10 Oct.", "fact": "2037-10-09T02:34:35Z → 2037-10-09T22:48:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 9th, 11:26–12:14 on the 10th.", "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 9th and 0 of 48 on the 10th.", "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 3078 s" }, { "step": "ruling", "text": "Navarātrārambha, Fuzhou, 2037: Friday 9 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": "2037-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Navarātrārambha (Navratri) 2037 falls on Friday 9 October. Pratipadā runs from 10:35 on Fri 9 Oct to 06:49 on Sat 10 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-10-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35250, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-12T00:21:26+08:00", "utc": "2037-10-11T16:21:26Z", "ms": 2138890885515.5317 }, "end": { "local": "2037-10-12T22:00:35+08:00", "utc": "2037-10-12T14:00:35Z", "ms": 2138968835447.0808 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-12T00:21:26+08:00", "utc": "2037-10-11T16:21:26Z", "ms": 2138890885515.5317 }, "end": { "local": "2037-10-12T22:00:35+08:00", "utc": "2037-10-12T14:00:35Z", "ms": 2138968835447.0808 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-11", "window": { "start": { "local": "2037-10-11T11:25:21+08:00", "utc": "2037-10-11T03:25:21Z", "ms": 2138844321001.158 }, "end": { "local": "2037-10-11T12:13:21+08:00", "utc": "2037-10-11T04:13:21Z", "ms": 2138847201001.158 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-12", "window": { "start": { "local": "2037-10-12T11:25:06+08:00", "utc": "2037-10-12T03:25:06Z", "ms": 2138930705945.6724 }, "end": { "local": "2037-10-12T12:13:06+08:00", "utc": "2037-10-12T04:13:06Z", "ms": 2138933585945.6724 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:21 on Mon 12 Oct to 22:01 on Mon 12 Oct.", "fact": "2037-10-11T16:21:26Z → 2037-10-12T14:00:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 11th, 11:25–12:13 on the 12th.", "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 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35250 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Monday 12 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": "2037-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Monday 12 October. Caturthī runs from 00:21 on Mon 12 Oct to 22:01 on Mon 12 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36609, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-10-14T19:43:08+08:00", "utc": "2037-10-14T11:43:08Z", "ms": 2139133388009.6448 }, "end": { "local": "2037-10-15T19:52:18+08:00", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-14T19:43:08+08:00", "utc": "2037-10-14T11:43:08Z", "ms": 2139133388009.6448 }, "end": { "local": "2037-10-15T19:52:18+08:00", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 } }, "kaala": "udaya-1", "days": [ { "local_date": "2037-10-15", "window": { "start": { "local": "2037-10-15T06:01:56+08:00", "utc": "2037-10-14T22:01:56Z", "ms": 2139170515832.874 }, "end": { "local": "2037-10-15T06:48:08+08:00", "utc": "2037-10-14T22:48:08Z", "ms": 2139173287564.9692 } }, "covered_min": 46, "window_min": 46, "qualifies": true }, { "local_date": "2037-10-16", "window": { "start": { "local": "2037-10-16T06:02:27+08:00", "utc": "2037-10-15T22:02:27Z", "ms": 2139256946844.207 }, "end": { "local": "2037-10-16T06:48:33+08:00", "utc": "2037-10-15T22:48:33Z", "ms": 2139259712712.1077 } }, "covered_min": 0, "window_min": 46, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:43 on Wed 14 Oct to 19:52 on Thu 15 Oct.", "fact": "2037-10-14T11:43:08Z → 2037-10-15T11:52:18Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:02–06:48 on the 15th, 06:02–06:49 on the 16th.", "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 46 of 46 minutes on the 15th and 0 of 46 on the 16th.", "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 36609 s" }, { "step": "ruling", "text": "Durgā Saptamī, Fuzhou, 2037: Thursday 15 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": "2037-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Durgā Saptamī 2037 falls on Thursday 15 October. Saptamī runs from 19:43 on Wed 14 Oct to 19:52 on Thu 15 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27594, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-15T19:52:18+08:00", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "end": { "local": "2037-10-16T20:50:13+08:00", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-15T19:52:18+08:00", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "end": { "local": "2037-10-16T20:50:13+08:00", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-15", "window": { "start": { "local": "2037-10-15T11:24:24+08:00", "utc": "2037-10-15T03:24:24Z", "ms": 2139189863823.5874 }, "end": { "local": "2037-10-15T12:12:24+08:00", "utc": "2037-10-15T04:12:24Z", "ms": 2139192743823.5874 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-16", "window": { "start": { "local": "2037-10-16T11:24:11+08:00", "utc": "2037-10-16T03:24:11Z", "ms": 2139276250853.462 }, "end": { "local": "2037-10-16T12:12:11+08:00", "utc": "2037-10-16T04:12:11Z", "ms": 2139279130853.462 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:52 on Thu 15 Oct to 20:50 on Fri 16 Oct.", "fact": "2037-10-15T11:52:18Z → 2037-10-16T12:50:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 15th, 11:24–12:12 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27594 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Fuzhou, 2037: Friday 16 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": "2037-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahāṣṭamī (Durga Ashtami) 2037 falls on Friday 16 October. Aṣṭamī runs from 19:52 on Thu 15 Oct to 20:50 on Fri 16 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31082, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-10-16T20:50:13+08:00", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "end": { "local": "2037-10-17T22:29:07+08:00", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-16T20:50:13+08:00", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "end": { "local": "2037-10-17T22:29:07+08:00", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-16", "window": { "start": { "local": "2037-10-16T11:24:11+08:00", "utc": "2037-10-16T03:24:11Z", "ms": 2139276250853.462 }, "end": { "local": "2037-10-16T12:12:11+08:00", "utc": "2037-10-16T04:12:11Z", "ms": 2139279130853.462 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-17", "window": { "start": { "local": "2037-10-17T11:23:58+08:00", "utc": "2037-10-17T03:23:58Z", "ms": 2139362638448.011 }, "end": { "local": "2037-10-17T12:11:58+08:00", "utc": "2037-10-17T04:11:58Z", "ms": 2139365518448.011 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 20:50 on Fri 16 Oct to 22:29 on Sat 17 Oct.", "fact": "2037-10-16T12:50:13Z → 2037-10-17T14:29:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 16th, 11:24–12:12 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31082 s" }, { "step": "ruling", "text": "Mahānavamī, Fuzhou, 2037: Saturday 17 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": "2037-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahānavamī 2037 falls on Saturday 17 October. Navamī runs from 20:50 on Fri 16 Oct to 22:29 on Sat 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9649, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2037-10-17T22:29:07+08:00", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "end": { "local": "2037-10-19T00:38:10+08:00", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "2037-10-17T22:29:07+08:00", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "end": { "local": "2037-10-18T08:44:19+08:00", "utc": "2037-10-18T00:44:19Z", "ms": 2139439458828.4539 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "2037-10-17T06:21:06+08:00", "utc": "2037-10-16T22:21:06Z", "ms": 2139344465601.661 }, "end": { "local": "2037-10-18T08:44:19+08:00", "utc": "2037-10-18T00:44:19Z", "ms": 2139439458828.4539 } } }, "kaala": "daytime", "days": [ { "local_date": "2037-10-17", "window": { "start": { "local": "2037-10-17T06:02:58+08:00", "utc": "2037-10-16T22:02:58Z", "ms": 2139343378246.5244 }, "end": { "local": "2037-10-17T17:32:59+08:00", "utc": "2037-10-17T09:32:59Z", "ms": 2139384778649.4976 } }, "covered_min": 0, "window_min": 690, "qualifies": false }, { "local_date": "2037-10-18", "window": { "start": { "local": "2037-10-18T06:03:30+08:00", "utc": "2037-10-17T22:03:30Z", "ms": 2139429810047.7874 }, "end": { "local": "2037-10-18T17:32:03+08:00", "utc": "2037-10-18T09:32:03Z", "ms": 2139471123203.0112 } }, "covered_min": 161, "window_min": 689, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 22:29 on Sat 17 Oct to 00:38 on Mon 19 Oct, and Śravaṇa from 06:21 on Sat 17 Oct to 08:44 on Sun 18 Oct. They are together from 22:29 on Sat 17 Oct to 08:44 on Sun 18 Oct.", "fact": "2037-10-17T14:29:07Z → 2037-10-18T00:44:19Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:03–17:33 on the 17th, 06:04–17:32 on the 18th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 0 of 690 minutes on the 17th and 161 of 689 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9649 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Fuzhou, 2037: Sunday 18 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": "2037-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Vijayā Daśamī (Dussehra) 2037 falls on Sunday 18 October. Daśamī runs from 22:29 on Sat 17 Oct to 00:38 on Mon 19 Oct and is with Śravaṇa in the day time that day, for 161 minutes.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-10-19", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10762, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-10-19T00:38:10+08:00", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "end": { "local": "2037-10-20T03:05:13+08:00", "utc": "2037-10-19T19:05:13Z", "ms": 2139591913254.2046 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-19T00:38:10+08:00", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "end": { "local": "2037-10-20T03:05:13+08:00", "utc": "2037-10-19T19:05:13Z", "ms": 2139591913254.2046 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-10-19", "window": { "start": { "local": "2037-10-19T06:04:02+08:00", "utc": "2037-10-18T22:04:02Z", "ms": 2139516242256.0132 }, "end": { "local": "2037-10-19T06:04:02+08:00", "utc": "2037-10-18T22:04:02Z", "ms": 2139516242256.0132 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-20", "window": { "start": { "local": "2037-10-20T06:04:35+08:00", "utc": "2037-10-19T22:04:35Z", "ms": 2139602674879.1365 }, "end": { "local": "2037-10-20T06:04:35+08:00", "utc": "2037-10-19T22:04:35Z", "ms": 2139602674879.1365 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:38 on Mon 19 Oct to 03:05 on Tue 20 Oct.", "fact": "2037-10-18T16:38:10Z → 2037-10-19T19:05:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:04 on the 19th and 06:05 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 10762 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Fuzhou, 2037: Monday 19 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": "2037-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Pāśāṅkuśā Ekādaśī 2037 falls on Monday 19 October. Ekādaśī runs from 00:38 on Mon 19 Oct to 03:05 on Tue 20 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-10-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-10-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33558, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-10-21T05:38:43+08:00", "utc": "2037-10-20T21:38:43Z", "ms": 2139687523140.5217 }, "end": { "local": "2037-10-22T08:09:12+08:00", "utc": "2037-10-22T00:09:12Z", "ms": 2139782951956.2473 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-21T05:38:43+08:00", "utc": "2037-10-20T21:38:43Z", "ms": 2139687523140.5217 }, "end": { "local": "2037-10-22T08:09:12+08:00", "utc": "2037-10-22T00:09:12Z", "ms": 2139782951956.2473 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-21", "window": { "start": { "local": "2037-10-21T17:29:22+08:00", "utc": "2037-10-21T09:29:22Z", "ms": 2139730161750.6587 }, "end": { "local": "2037-10-21T19:10:12+08:00", "utc": "2037-10-21T11:10:12Z", "ms": 2139736212370.678 } }, "covered_min": 101, "window_min": 101, "qualifies": true }, { "local_date": "2037-10-22", "window": { "start": { "local": "2037-10-22T17:28:30+08:00", "utc": "2037-10-22T09:28:30Z", "ms": 2139816509658.3728 }, "end": { "local": "2037-10-22T19:09:32+08:00", "utc": "2037-10-22T11:09:32Z", "ms": 2139822571745.7822 } }, "covered_min": 0, "window_min": 101, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:39 on Wed 21 Oct to 08:09 on Thu 22 Oct.", "fact": "2037-10-20T21:38:43Z → 2037-10-22T00:09:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:29–19:10 on the 21st, 17:28–19:10 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 101 of 101 minutes on the 21st and 0 of 101 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33558 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Wednesday 21 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": "2037-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Wednesday 21 October. Trayodaśī runs from 05:39 on Wed 21 Oct to 08:09 on Thu 22 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9004, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-27T17:10:32+08:00", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T17:59:53+08:00", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-27T17:10:32+08:00", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T17:59:53+08:00", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-27", "window": { "start": { "local": "2037-10-27T19:43:47+08:00", "utc": "2037-10-27T11:43:47Z", "ms": 2140256626900.2886 }, "end": { "local": "2037-10-27T19:43:47+08:00", "utc": "2037-10-27T11:43:47Z", "ms": 2140256626900.2886 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-28", "window": { "start": { "local": "2037-10-28T20:29:57+08:00", "utc": "2037-10-28T12:29:57Z", "ms": 2140345797376.8965 }, "end": { "local": "2037-10-28T20:29:57+08:00", "utc": "2037-10-28T12:29:57Z", "ms": 2140345797376.8965 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:11 on Tue 27 Oct to 18:00 on Wed 28 Oct.", "fact": "2037-10-27T09:10:32Z → 2037-10-28T09:59:53Z" }, { "step": "kaala", "text": "Moonrise is at 19:44 on the 27th and 20:30 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "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 9004 s" }, { "step": "ruling", "text": "Karaka Caturthī, Fuzhou, 2037: Tuesday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Karaka Caturthī (Karwa Chauth) 2037 falls on Tuesday 27 October. Caturthī runs from 17:11 on Tue 27 Oct to 18:00 on Wed 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-10-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9004, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-27T17:10:32+08:00", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T17:59:53+08:00", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-27T17:10:32+08:00", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T17:59:53+08:00", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-27", "window": { "start": { "local": "2037-10-27T19:43:47+08:00", "utc": "2037-10-27T11:43:47Z", "ms": 2140256626900.2886 }, "end": { "local": "2037-10-27T19:43:47+08:00", "utc": "2037-10-27T11:43:47Z", "ms": 2140256626900.2886 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-28", "window": { "start": { "local": "2037-10-28T20:29:57+08:00", "utc": "2037-10-28T12:29:57Z", "ms": 2140345797376.8965 }, "end": { "local": "2037-10-28T20:29:57+08:00", "utc": "2037-10-28T12:29:57Z", "ms": 2140345797376.8965 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:11 on Tue 27 Oct to 18:00 on Wed 28 Oct.", "fact": "2037-10-27T09:10:32Z → 2037-10-28T09:59:53Z" }, { "step": "kaala", "text": "Moonrise is at 19:44 on the 27th and 20:30 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "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 9004 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Tuesday 27 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": "2037-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Tuesday 27 October. Caturthī runs from 17:11 on Tue 27 Oct to 18:00 on Wed 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20186, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-31T17:38:57+08:00", "utc": "2037-10-31T09:38:57Z", "ms": 2140594737350.2683 }, "end": { "local": "2037-11-01T16:25:25+08:00", "utc": "2037-11-01T08:25:25Z", "ms": 2140676724946.7095 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-31T17:38:57+08:00", "utc": "2037-10-31T09:38:57Z", "ms": 2140594737350.2683 }, "end": { "local": "2037-11-01T16:25:25+08:00", "utc": "2037-11-01T08:25:25Z", "ms": 2140676724946.7095 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-31", "window": { "start": { "local": "2037-10-31T23:15:23+08:00", "utc": "2037-10-31T15:15:23Z", "ms": 2140614923161.5298 }, "end": { "local": "2037-10-31T23:15:23+08:00", "utc": "2037-10-31T15:15:23Z", "ms": 2140614923161.5298 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-11-01", "window": { "start": { "local": "2037-11-02T00:17:08+08:00", "utc": "2037-11-01T16:17:08Z", "ms": 2140705028340.3892 }, "end": { "local": "2037-11-02T00:17:08+08:00", "utc": "2037-11-01T16:17:08Z", "ms": 2140705028340.3892 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 17:39 on Sat 31 Oct to 16:25 on Sun 1 Nov.", "fact": "2037-10-31T09:38:57Z → 2037-11-01T08:25:25Z" }, { "step": "kaala", "text": "Moonrise is at 23:15 on the 31st and 00:17 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 31st and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20186 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Fuzhou, 2037: Saturday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-31", "confidence": "determinate" } ], "quote": "In Fuzhou, Ahoyī Aṣṭamī 2037 falls on Saturday 31 October. Aṣṭamī runs from 17:39 on Sat 31 Oct to 16:25 on Sun 1 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-11-04", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11507, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-11-03T12:15:15+08:00", "utc": "2037-11-03T04:15:15Z", "ms": 2140834514652.8245 }, "end": { "local": "2037-11-04T09:25:25+08:00", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-03T12:15:15+08:00", "utc": "2037-11-03T04:15:15Z", "ms": 2140834514652.8245 }, "end": { "local": "2037-11-04T09:25:25+08:00", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-11-03", "window": { "start": { "local": "2037-11-03T06:12:59+08:00", "utc": "2037-11-02T22:12:59Z", "ms": 2140812778522.0352 }, "end": { "local": "2037-11-03T06:12:59+08:00", "utc": "2037-11-02T22:12:59Z", "ms": 2140812778522.0352 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T06:13:38+08:00", "utc": "2037-11-03T22:13:38Z", "ms": 2140899217927.5286 }, "end": { "local": "2037-11-04T06:13:38+08:00", "utc": "2037-11-03T22:13:38Z", "ms": 2140899217927.5286 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:15 on Tue 3 Nov to 09:25 on Wed 4 Nov.", "fact": "2037-11-03T04:15:15Z → 2037-11-04T01:25:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 3rd and 06:14 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 11507 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Fuzhou, 2037: Wednesday 4 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": "2037-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Ramā Ekādaśī 2037 falls on Wednesday 4 November. Ekādaśī runs from 12:15 on Tue 3 Nov to 09:25 on Wed 4 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28400, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-11-04T09:25:25+08:00", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "end": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-04T09:25:25+08:00", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "end": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T17:18:46+08:00", "utc": "2037-11-04T09:18:46Z", "ms": 2140939125611.165 }, "end": { "local": "2037-11-04T19:02:10+08:00", "utc": "2037-11-04T11:02:10Z", "ms": 2140945329898.5168 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T17:18:09+08:00", "utc": "2037-11-05T09:18:09Z", "ms": 2141025488780.847 }, "end": { "local": "2037-11-05T19:01:43+08:00", "utc": "2037-11-05T11:01:43Z", "ms": 2141031703346.719 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:25 on Wed 4 Nov to 06:14 on Thu 5 Nov.", "fact": "2037-11-04T01:25:25Z → 2037-11-04T22:14:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:02 on the 4th, 17:18–19:02 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 103 of 103 minutes on the 4th and 0 of 104 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28400 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Fuzhou, 2037: Wednesday 4 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": "2037-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Govatsa Dvādaśī (Vasu Baras) 2037 falls on Wednesday 4 November. Dvādaśī runs from 09:25 on Wed 4 Nov to 06:14 on Thu 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28094, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T17:18:46+08:00", "utc": "2037-11-04T09:18:46Z", "ms": 2140939125611.165 }, "end": { "local": "2037-11-04T19:02:10+08:00", "utc": "2037-11-04T11:02:10Z", "ms": 2140945329898.5168 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T17:18:09+08:00", "utc": "2037-11-05T09:18:09Z", "ms": 2141025488780.847 }, "end": { "local": "2037-11-05T19:01:43+08:00", "utc": "2037-11-05T11:01:43Z", "ms": 2141031703346.719 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:14 on Thu 5 Nov to 02:50 on Fri 6 Nov.", "fact": "2037-11-04T22:14:08Z → 2037-11-05T18:49:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:02 on the 4th, 17:18–19:02 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 0 of 103 minutes on the 4th and 104 of 104 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28094 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Fuzhou, 2037: Thursday 5 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": "2037-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Dīpadāna 2037 falls on Thursday 5 November. Trayodaśī runs from 06:14 on Thu 5 Nov to 02:50 on Fri 6 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-11-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28094, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T06:14:08+08:00", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T17:18:46+08:00", "utc": "2037-11-04T09:18:46Z", "ms": 2140939125611.165 }, "end": { "local": "2037-11-04T19:02:10+08:00", "utc": "2037-11-04T11:02:10Z", "ms": 2140945329898.5168 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T17:18:09+08:00", "utc": "2037-11-05T09:18:09Z", "ms": 2141025488780.847 }, "end": { "local": "2037-11-05T19:01:43+08:00", "utc": "2037-11-05T11:01:43Z", "ms": 2141031703346.719 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:14 on Thu 5 Nov to 02:50 on Fri 6 Nov.", "fact": "2037-11-04T22:14:08Z → 2037-11-05T18:49:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:02 on the 4th, 17:18–19:02 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 0 of 103 minutes on the 4th and 104 of 104 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 28094 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Thursday 5 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": "2037-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 5 November. Trayodaśī runs from 06:14 on Thu 5 Nov to 02:50 on Fri 6 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6087, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T04:31:23+08:00", "utc": "2037-11-05T20:31:23Z", "ms": 2141065883459.0159 }, "end": { "local": "2037-11-06T06:14:58+08:00", "utc": "2037-11-05T22:14:58Z", "ms": 2141072098024.888 } }, "covered_min": 104, "window_min": 104, "qualifies": true }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T04:31:54+08:00", "utc": "2037-11-06T20:31:54Z", "ms": 2141152313958.7776 }, "end": { "local": "2037-11-07T06:15:39+08:00", "utc": "2037-11-06T22:15:39Z", "ms": 2141158538687.531 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:50 on Fri 6 Nov to 23:23 on Fri 6 Nov.", "fact": "2037-11-05T18:49:57Z → 2037-11-06T15:22:45Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:31–06:15 on the 6th, 04:32–06:16 on the 7th.", "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 104 of 104 minutes on the 6th and 0 of 104 on the 7th.", "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 6087 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Fuzhou, 2037: Friday 6 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": "2037-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Naraka Caturdaśī (Choti Diwali) 2037 falls on Friday 6 November. Caturdaśī runs from 02:50 on Fri 6 Nov to 23:23 on Fri 6 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-06", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 9, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T23:22:36+08:00", "utc": "2037-11-06T15:22:36Z", "ms": 2141133755954.7056 }, "end": { "local": "2037-11-07T00:10:36+08:00", "utc": "2037-11-06T16:10:36Z", "ms": 2141136635954.7056 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T23:22:39+08:00", "utc": "2037-11-07T15:22:39Z", "ms": 2141220159344.128 }, "end": { "local": "2037-11-08T00:10:39+08:00", "utc": "2037-11-07T16:10:39Z", "ms": 2141223039344.128 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 23:23 on Fri 6 Nov to 20:03 on Sat 7 Nov.", "fact": "2037-11-06T15:22:45Z → 2037-11-07T12:03:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:23–00:11 on the 6th, 23:23–00:11 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "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 9 s < 300 s" }, { "step": "ruling", "text": "Kālī Pūjā, Fuzhou, 2037: Friday 6 November.", "fact": "confidence: boundary (margin)" } ], "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": "2037-11-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "boundary" } ], "quote": "In Fuzhou, Kālī Pūjā 2037 falls on Friday 6 November. Amāvasyā runs from 23:23 on Fri 6 Nov to 20:03 on Sat 7 Nov and covers all of niśītha that night. It is 0 min 09 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/shivaratri?on=2037-11-06", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-06", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 9, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T02:49:57+08:00", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T23:22:33+08:00", "utc": "2037-11-05T15:22:33Z", "ms": 2141047353402.8674 }, "end": { "local": "2037-11-06T00:10:33+08:00", "utc": "2037-11-05T16:10:33Z", "ms": 2141050233402.8674 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T23:22:36+08:00", "utc": "2037-11-06T15:22:36Z", "ms": 2141133755954.7056 }, "end": { "local": "2037-11-07T00:10:36+08:00", "utc": "2037-11-06T16:10:36Z", "ms": 2141136635954.7056 } }, "covered_min": 0, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:50 on Fri 6 Nov to 23:23 on Fri 6 Nov.", "fact": "2037-11-05T18:49:57Z → 2037-11-06T15:22:45Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:23–00:11 on the 5th, 23:23–00:11 on the 6th.", "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 5th and 0 of 48 on the 6th.", "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 9 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Friday 6 November.", "fact": "confidence: boundary (margin)" } ], "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": "2037-11-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "boundary" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Friday 6 November. Caturdaśī runs from 02:50 on Fri 6 Nov to 23:23 on Fri 6 Nov and covers 0 of 48 minutes of niśītha that night. It is 0 min 09 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-11-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3737, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T23:22:45+08:00", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T17:17:33+08:00", "utc": "2037-11-06T09:17:33Z", "ms": 2141111853221.8801 }, "end": { "local": "2037-11-06T19:01:18+08:00", "utc": "2037-11-06T11:01:18Z", "ms": 2141118077950.6335 } }, "covered_min": 0, "window_min": 104, "qualifies": false }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T17:16:59+08:00", "utc": "2037-11-07T09:16:59Z", "ms": 2141198218951.7632 }, "end": { "local": "2037-11-07T19:00:54+08:00", "utc": "2037-11-07T11:00:54Z", "ms": 2141204453723.0605 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 23:23 on Fri 6 Nov to 20:03 on Sat 7 Nov.", "fact": "2037-11-06T15:22:45Z → 2037-11-07T12:03:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:18–19:01 on the 6th, 17:17–19:01 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 104 minutes on the 6th and 104 of 104 on the 7th.", "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 3737 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Fuzhou, 2037: Saturday 7 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": "2037-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Lakṣmī Pūjā (Diwali) 2037 falls on Saturday 7 November. Amāvasyā runs from 23:23 on Fri 6 Nov to 20:03 on Sat 7 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-07", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 860, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T17:16:59+08:00", "utc": "2037-11-07T09:16:59Z", "ms": 2141198218951.7632 }, "end": { "local": "2037-11-07T19:00:54+08:00", "utc": "2037-11-07T11:00:54Z", "ms": 2141204453723.0605 } }, "covered_min": 0, "window_min": 104, "qualifies": false }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T17:16:26+08:00", "utc": "2037-11-08T09:16:26Z", "ms": 2141284585987.0522 }, "end": { "local": "2037-11-08T19:00:31+08:00", "utc": "2037-11-08T11:00:31Z", "ms": 2141290830675.7783 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:17–19:01 on the 7th, 17:16–19:01 on the 8th.", "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 104 minutes on the 7th and 0 of 104 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 860 s" }, { "step": "ruling", "text": "Bali Pūjā, Fuzhou, 2037: Saturday 7 November.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2037-11-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-07", "confidence": "boundary" } ], "quote": "In Fuzhou, Bali Pūjā 2037 falls on Saturday 7 November. Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17504, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T11:22:19+08:00", "utc": "2037-11-07T03:22:19Z", "ms": 2141176938819.647 }, "end": { "local": "2037-11-07T12:10:19+08:00", "utc": "2037-11-07T04:10:19Z", "ms": 2141179818819.647 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T11:22:23+08:00", "utc": "2037-11-08T03:22:23Z", "ms": 2141263342861.7725 }, "end": { "local": "2037-11-08T12:10:23+08:00", "utc": "2037-11-08T04:10:23Z", "ms": 2141266222861.7725 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 7th, 11:22–12:10 on the 8th.", "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 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17504 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Fuzhou, 2037: Sunday 8 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": "2037-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Govardhana Pūjā 2037 falls on Sunday 8 November. Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25545, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T20:03:11+08:00", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T06:15:39+08:00", "utc": "2037-11-06T22:15:39Z", "ms": 2141158538687.531 }, "end": { "local": "2037-11-07T09:56:05+08:00", "utc": "2037-11-07T01:56:05Z", "ms": 2141171765442.2751 } }, "covered_min": 0, "window_min": 220, "qualifies": false }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T06:16:20+08:00", "utc": "2037-11-07T22:16:20Z", "ms": 2141244979736.4927 }, "end": { "local": "2037-11-08T09:56:22+08:00", "utc": "2037-11-08T01:56:22Z", "ms": 2141258181820.0125 } }, "covered_min": 220, "window_min": 220, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:16–09:56 on the 7th, 06:16–09:56 on the 8th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 220 minutes on the 7th and 220 of 220 on the 8th.", "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 25545 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Fuzhou, 2037: Sunday 8 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": "2037-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Dyūta Pratipad 2037 falls on Sunday 8 November. Pratipadā runs from 20:03 on Sat 7 Nov to 17:02 on Sun 8 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8376, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "end": { "local": "2037-11-09T14:30:04+08:00", "utc": "2037-11-09T06:30:04Z", "ms": 2141361003603.195 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-08T17:02:06+08:00", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "end": { "local": "2037-11-09T14:30:04+08:00", "utc": "2037-11-09T06:30:04Z", "ms": 2141361003603.195 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T11:22:23+08:00", "utc": "2037-11-08T03:22:23Z", "ms": 2141263342861.7725 }, "end": { "local": "2037-11-08T12:10:23+08:00", "utc": "2037-11-08T04:10:23Z", "ms": 2141266222861.7725 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-09", "window": { "start": { "local": "2037-11-09T11:22:28+08:00", "utc": "2037-11-09T03:22:28Z", "ms": 2141349747748.2026 }, "end": { "local": "2037-11-09T12:10:28+08:00", "utc": "2037-11-09T04:10:28Z", "ms": 2141352627748.2026 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 17:02 on Sun 8 Nov to 14:30 on Mon 9 Nov.", "fact": "2037-11-08T09:02:06Z → 2037-11-09T06:30:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 8th, 11:22–12:10 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "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 8376 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Fuzhou, 2037: Monday 9 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": "2037-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Dvitīyā (Bhai Dooj) 2037 falls on Monday 9 November. Dvitīyā runs from 17:02 on Sun 8 Nov to 14:30 on Mon 9 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 366, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-10T12:36:28+08:00", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T11:28:46+08:00", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-10T12:36:28+08:00", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T11:28:46+08:00", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-10", "window": { "start": { "local": "2037-11-10T11:22:33+08:00", "utc": "2037-11-10T03:22:33Z", "ms": 2141436153476.9062 }, "end": { "local": "2037-11-10T12:10:33+08:00", "utc": "2037-11-10T04:10:33Z", "ms": 2141439033476.9062 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-11", "window": { "start": { "local": "2037-11-11T11:22:40+08:00", "utc": "2037-11-11T03:22:40Z", "ms": 2141522560045.7363 }, "end": { "local": "2037-11-11T12:10:40+08:00", "utc": "2037-11-11T04:10:40Z", "ms": 2141525440045.7363 } }, "covered_min": 6, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov.", "fact": "2037-11-10T04:36:28Z → 2037-11-11T03:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 10th, 11:23–12:11 on the 11th.", "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 10th and 6 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 366 s" }, { "step": "ruling", "text": "Nāga Caturthī, Fuzhou, 2037: Wednesday 11 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": "2037-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Caturthī 2037 falls on Wednesday 11 November. Caturthī runs from 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov and covers 6 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-11-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 366, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-10T12:36:28+08:00", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T11:28:46+08:00", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-10T12:36:28+08:00", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T11:28:46+08:00", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-10", "window": { "start": { "local": "2037-11-10T11:22:33+08:00", "utc": "2037-11-10T03:22:33Z", "ms": 2141436153476.9062 }, "end": { "local": "2037-11-10T12:10:33+08:00", "utc": "2037-11-10T04:10:33Z", "ms": 2141439033476.9062 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-11", "window": { "start": { "local": "2037-11-11T11:22:40+08:00", "utc": "2037-11-11T03:22:40Z", "ms": 2141522560045.7363 }, "end": { "local": "2037-11-11T12:10:40+08:00", "utc": "2037-11-11T04:10:40Z", "ms": 2141525440045.7363 } }, "covered_min": 6, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov.", "fact": "2037-11-10T04:36:28Z → 2037-11-11T03:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 10th, 11:23–12:11 on the 11th.", "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 10th and 6 of 48 on the 11th.", "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 366 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Wednesday 11 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": "2037-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-11", "confidence": "boundary" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Wednesday 11 November. Caturthī runs from 12:36 on Tue 10 Nov to 11:29 on Wed 11 Nov and covers 6 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-11-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-12", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 686, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-11-12T11:11:22+08:00", "utc": "2037-11-12T03:11:22Z", "ms": 2141608281701.1724 }, "end": { "local": "2037-11-13T11:44:37+08:00", "utc": "2037-11-13T03:44:37Z", "ms": 2141696677090.1436 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-12T11:11:22+08:00", "utc": "2037-11-12T03:11:22Z", "ms": 2141608281701.1724 }, "end": { "local": "2037-11-13T11:44:37+08:00", "utc": "2037-11-13T03:44:37Z", "ms": 2141696677090.1436 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-12", "window": { "start": { "local": "2037-11-12T11:22:47+08:00", "utc": "2037-11-12T03:22:47Z", "ms": 2141608967452.5972 }, "end": { "local": "2037-11-12T12:10:47+08:00", "utc": "2037-11-12T04:10:47Z", "ms": 2141611847452.5972 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-13", "window": { "start": { "local": "2037-11-13T11:22:56+08:00", "utc": "2037-11-13T03:22:56Z", "ms": 2141695375695.4297 }, "end": { "local": "2037-11-13T12:10:56+08:00", "utc": "2037-11-13T04:10:56Z", "ms": 2141698255695.4297 } }, "covered_min": 22, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:11 on Thu 12 Nov to 11:45 on Fri 13 Nov.", "fact": "2037-11-12T03:11:22Z → 2037-11-13T03:44:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 12th, 11:23–12:11 on the 13th.", "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 12th and 22 of 48 on the 13th.", "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 686 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Fuzhou, 2037: Thursday 12 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2037-11-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-12", "confidence": "boundary" } ], "quote": "In Fuzhou, Sūrya Ṣaṣṭhī (Chhath) 2037 falls on Thursday 12 November. Ṣaṣṭhī runs from 11:11 on Thu 12 Nov to 11:45 on Fri 13 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 22 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/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3190, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-11-14T13:04:14+08:00", "utc": "2037-11-14T05:04:14Z", "ms": 2141787854368.1794 }, "end": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-14T13:04:14+08:00", "utc": "2037-11-14T05:04:14Z", "ms": 2141787854368.1794 }, "end": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-14", "window": { "start": { "local": "2037-11-14T11:23:05+08:00", "utc": "2037-11-14T03:23:05Z", "ms": 2141781784772.088 }, "end": { "local": "2037-11-14T12:11:05+08:00", "utc": "2037-11-14T04:11:05Z", "ms": 2141784664772.088 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T11:23:15+08:00", "utc": "2037-11-15T03:23:15Z", "ms": 2141868194680.1694 }, "end": { "local": "2037-11-15T12:11:15+08:00", "utc": "2037-11-15T04:11:15Z", "ms": 2141871074680.1694 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:04 on Sat 14 Nov to 15:01 on Sun 15 Nov.", "fact": "2037-11-14T05:04:14Z → 2037-11-15T07:01:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 14th, 11:23–12:11 on the 15th.", "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 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3190 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Fuzhou, 2037: Sunday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Gopāṣṭamī 2037 falls on Sunday 15 November. Aṣṭamī runs from 13:04 on Sat 14 Nov to 15:01 on Sun 15 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18167, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T17:23:43+08:00", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T17:23:43+08:00", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T06:21:16+08:00", "utc": "2037-11-14T22:21:16Z", "ms": 2141850076199.6099 }, "end": { "local": "2037-11-15T09:58:35+08:00", "utc": "2037-11-15T01:58:35Z", "ms": 2141863115186.6497 } }, "covered_min": 0, "window_min": 217, "qualifies": false }, { "local_date": "2037-11-16", "window": { "start": { "local": "2037-11-16T06:22:00+08:00", "utc": "2037-11-15T22:22:00Z", "ms": 2141936519602.622 }, "end": { "local": "2037-11-16T09:58:57+08:00", "utc": "2037-11-16T01:58:57Z", "ms": 2141949536812.115 } }, "covered_min": 217, "window_min": 217, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 15:01 on Sun 15 Nov to 17:24 on Mon 16 Nov.", "fact": "2037-11-15T07:01:22Z → 2037-11-16T09:23:43Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:21–09:59 on the 15th, 06:22–09:59 on the 16th.", "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 217 minutes on the 15th and 217 of 217 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 18167 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Fuzhou, 2037: Monday 16 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": "2037-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Akṣaya Navamī (Amla Navami) 2037 falls on Monday 16 November. Navamī runs from 15:01 on Sun 15 Nov to 17:24 on Mon 16 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10208, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T17:23:43+08:00", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-15T15:01:22+08:00", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T17:23:43+08:00", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T11:23:15+08:00", "utc": "2037-11-15T03:23:15Z", "ms": 2141868194680.1694 }, "end": { "local": "2037-11-15T12:11:15+08:00", "utc": "2037-11-15T04:11:15Z", "ms": 2141871074680.1694 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-16", "window": { "start": { "local": "2037-11-16T11:23:25+08:00", "utc": "2037-11-16T03:23:25Z", "ms": 2141954605416.8613 }, "end": { "local": "2037-11-16T12:11:25+08:00", "utc": "2037-11-16T04:11:25Z", "ms": 2141957485416.8613 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 15:01 on Sun 15 Nov to 17:24 on Mon 16 Nov.", "fact": "2037-11-15T07:01:22Z → 2037-11-16T09:23:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 15th, 11:23–12:11 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10208 s" }, { "step": "ruling", "text": "Durgā Navamī, Fuzhou, 2037: Monday 16 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": "2037-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Durgā Navamī 2037 falls on Monday 16 November. Navamī runs from 15:01 on Sun 15 Nov to 17:24 on Mon 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-11-18", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28491, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-11-17T19:57:25+08:00", "utc": "2037-11-17T11:57:25Z", "ms": 2142071844846.1797 }, "end": { "local": "2037-11-18T22:29:20+08:00", "utc": "2037-11-18T14:29:20Z", "ms": 2142167360219.3728 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-17T19:57:25+08:00", "utc": "2037-11-17T11:57:25Z", "ms": 2142071844846.1797 }, "end": { "local": "2037-11-18T22:29:20+08:00", "utc": "2037-11-18T14:29:20Z", "ms": 2142167360219.3728 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-11-18", "window": { "start": { "local": "2037-11-18T06:23:27+08:00", "utc": "2037-11-17T22:23:27Z", "ms": 2142109406980.2644 }, "end": { "local": "2037-11-18T06:23:27+08:00", "utc": "2037-11-17T22:23:27Z", "ms": 2142109406980.2644 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-11-19", "window": { "start": { "local": "2037-11-19T06:24:11+08:00", "utc": "2037-11-18T22:24:11Z", "ms": 2142195850908.942 }, "end": { "local": "2037-11-19T06:24:11+08:00", "utc": "2037-11-18T22:24:11Z", "ms": 2142195850908.942 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:57 on Tue 17 Nov to 22:29 on Wed 18 Nov.", "fact": "2037-11-17T11:57:25Z → 2037-11-18T14:29:20Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 18th and 06:24 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 28491 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Fuzhou, 2037: Wednesday 18 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": "2037-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Prabodhinī Ekādaśī 2037 falls on Wednesday 18 November. Ekādaśī runs from 19:57 on Tue 17 Nov to 22:29 on Wed 18 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-11-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-11-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21070, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-20T00:48:48+08:00", "utc": "2037-11-19T16:48:48Z", "ms": 2142262127863.381 }, "end": { "local": "2037-11-21T02:48:29+08:00", "utc": "2037-11-20T18:48:29Z", "ms": 2142355709139.9448 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-20T00:48:48+08:00", "utc": "2037-11-19T16:48:48Z", "ms": 2142262127863.381 }, "end": { "local": "2037-11-21T02:48:29+08:00", "utc": "2037-11-20T18:48:29Z", "ms": 2142355709139.9448 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-19", "window": { "start": { "local": "2037-11-19T17:11:54+08:00", "utc": "2037-11-19T09:11:54Z", "ms": 2142234714215.252 }, "end": { "local": "2037-11-19T18:57:38+08:00", "utc": "2037-11-19T10:57:38Z", "ms": 2142241058315.336 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2037-11-20", "window": { "start": { "local": "2037-11-20T17:11:38+08:00", "utc": "2037-11-20T09:11:38Z", "ms": 2142321098181.162 }, "end": { "local": "2037-11-20T18:57:30+08:00", "utc": "2037-11-20T10:57:30Z", "ms": 2142327450307.2195 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:49 on Fri 20 Nov to 02:48 on Sat 21 Nov.", "fact": "2037-11-19T16:48:48Z → 2037-11-20T18:48:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:12–18:58 on the 19th, 17:12–18:58 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 106 minutes on the 19th and 106 of 106 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 21070 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Friday 20 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": "2037-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Friday 20 November. Trayodaśī runs from 00:49 on Fri 20 Nov to 02:48 on Sat 21 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20986, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-11-22T04:24:26+08:00", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T05:35:18+08:00", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-22T04:24:26+08:00", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T05:35:18+08:00", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-22", "window": { "start": { "local": "2037-11-22T11:24:47+08:00", "utc": "2037-11-22T03:24:47Z", "ms": 2142473087005.9717 }, "end": { "local": "2037-11-22T12:12:47+08:00", "utc": "2037-11-22T04:12:47Z", "ms": 2142475967005.9717 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-23", "window": { "start": { "local": "2037-11-23T11:25:03+08:00", "utc": "2037-11-23T03:25:03Z", "ms": 2142559503412.767 }, "end": { "local": "2037-11-23T12:13:03+08:00", "utc": "2037-11-23T04:13:03Z", "ms": 2142562383412.767 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:24 on Sun 22 Nov to 05:35 on Mon 23 Nov.", "fact": "2037-11-21T20:24:26Z → 2037-11-22T21:35:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 22nd, 11:25–12:13 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "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 20986 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Fuzhou, 2037: Sunday 22 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": "2037-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Kārtikī Pūrṇimā 2037 falls on Sunday 22 November. Pūrṇimā runs from 04:24 on Sun 22 Nov to 05:35 on Mon 23 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15092, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-11-22T04:24:26+08:00", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T05:35:18+08:00", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-22T04:24:26+08:00", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T05:35:18+08:00", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-21", "window": { "start": { "local": "2037-11-21T23:24:54+08:00", "utc": "2037-11-21T15:24:54Z", "ms": 2142429893510.0728 }, "end": { "local": "2037-11-22T00:12:54+08:00", "utc": "2037-11-21T16:12:54Z", "ms": 2142432773510.0728 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-22", "window": { "start": { "local": "2037-11-22T23:25:09+08:00", "utc": "2037-11-22T15:25:09Z", "ms": 2142516309152.0986 }, "end": { "local": "2037-11-23T00:13:09+08:00", "utc": "2037-11-22T16:13:09Z", "ms": 2142519189152.0986 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:24 on Sun 22 Nov to 05:35 on Mon 23 Nov.", "fact": "2037-11-21T20:24:26Z → 2037-11-22T21:35:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 21st, 23:25–00:13 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15092 s" }, { "step": "ruling", "text": "Rāsayātrā, Fuzhou, 2037: Sunday 22 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": "2037-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Rāsayātrā 2037 falls on Sunday 22 November. Pūrṇimā runs from 04:24 on Sun 22 Nov to 05:35 on Mon 23 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-11-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36578, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-26T06:43:33+08:00", "utc": "2037-11-25T22:43:33Z", "ms": 2142801812795.0442 }, "end": { "local": "2037-11-27T06:21:04+08:00", "utc": "2037-11-26T22:21:04Z", "ms": 2142886863617.8074 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-11-26T06:43:33+08:00", "utc": "2037-11-25T22:43:33Z", "ms": 2142801812795.0442 }, "end": { "local": "2037-11-27T06:21:04+08:00", "utc": "2037-11-26T22:21:04Z", "ms": 2142886863617.8074 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-11-25", "window": { "start": { "local": "2037-11-25T19:16:49+08:00", "utc": "2037-11-25T11:16:49Z", "ms": 2142760609330.0269 }, "end": { "local": "2037-11-25T19:16:49+08:00", "utc": "2037-11-25T11:16:49Z", "ms": 2142760609330.0269 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-11-26", "window": { "start": { "local": "2037-11-26T20:11:26+08:00", "utc": "2037-11-26T12:11:26Z", "ms": 2142850285770.5066 }, "end": { "local": "2037-11-26T20:11:26+08:00", "utc": "2037-11-26T12:11:26Z", "ms": 2142850285770.5066 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:44 on Thu 26 Nov to 06:21 on Fri 27 Nov.", "fact": "2037-11-25T22:43:33Z → 2037-11-26T22:21:04Z" }, { "step": "kaala", "text": "Moonrise is at 19:17 on the 25th and 20:11 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "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 36578 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Thursday 26 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": "2037-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Thursday 26 November. Caturthī runs from 06:44 on Thu 26 Nov to 06:21 on Fri 27 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/ekadashi?on=2037-12-03", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36331, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-12-02T20:28:56+08:00", "utc": "2037-12-02T12:28:56Z", "ms": 2143369736204.0466 }, "end": { "local": "2037-12-03T17:49:25+08:00", "utc": "2037-12-03T09:49:25Z", "ms": 2143446564564.566 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-02T20:28:56+08:00", "utc": "2037-12-02T12:28:56Z", "ms": 2143369736204.0466 }, "end": { "local": "2037-12-03T17:49:25+08:00", "utc": "2037-12-03T09:49:25Z", "ms": 2143446564564.566 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-12-03", "window": { "start": { "local": "2037-12-03T06:34:27+08:00", "utc": "2037-12-02T22:34:27Z", "ms": 2143406067088.2244 }, "end": { "local": "2037-12-03T06:34:27+08:00", "utc": "2037-12-02T22:34:27Z", "ms": 2143406067088.2244 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-12-04", "window": { "start": { "local": "2037-12-04T06:35:10+08:00", "utc": "2037-12-03T22:35:10Z", "ms": 2143492509940.8228 }, "end": { "local": "2037-12-04T06:35:10+08:00", "utc": "2037-12-03T22:35:10Z", "ms": 2143492509940.8228 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:29 on Wed 2 Dec to 17:49 on Thu 3 Dec.", "fact": "2037-12-02T12:28:56Z → 2037-12-03T09:49:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 3rd and 06:35 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 36331 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Fuzhou, 2037: Thursday 3 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": "2037-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Utpannā Ekādaśī 2037 falls on Thursday 3 December. Ekādaśī runs from 20:29 on Wed 2 Dec to 17:49 on Thu 3 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-12-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7555, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-12-04T15:04:40+08:00", "utc": "2037-12-04T07:04:40Z", "ms": 2143523080191.0872 }, "end": { "local": "2037-12-05T12:22:17+08:00", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-04T15:04:40+08:00", "utc": "2037-12-04T07:04:40Z", "ms": 2143523080191.0872 }, "end": { "local": "2037-12-05T12:22:17+08:00", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-04", "window": { "start": { "local": "2037-12-04T17:10:36+08:00", "utc": "2037-12-04T09:10:36Z", "ms": 2143530635666.9026 }, "end": { "local": "2037-12-04T18:57:58+08:00", "utc": "2037-12-04T10:57:58Z", "ms": 2143537077903.119 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2037-12-05", "window": { "start": { "local": "2037-12-05T17:10:43+08:00", "utc": "2037-12-05T09:10:43Z", "ms": 2143617042872.0298 }, "end": { "local": "2037-12-05T18:58:10+08:00", "utc": "2037-12-05T10:58:10Z", "ms": 2143623489760.641 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:05 on Fri 4 Dec to 12:22 on Sat 5 Dec.", "fact": "2037-12-04T07:04:40Z → 2037-12-05T04:22:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:11–18:58 on the 4th, 17:11–18:58 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 107 of 107 minutes on the 4th and 0 of 107 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 7555 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2037: Friday 4 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": "2037-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2037 falls on Friday 4 December. Trayodaśī runs from 15:05 on Fri 4 Dec to 12:22 on Sat 5 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-12-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/shivaratri?on=2037-12-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34379, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-12-05T12:22:17+08:00", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "end": { "local": "2037-12-06T09:50:37+08:00", "utc": "2037-12-06T01:50:37Z", "ms": 2143677037428.827 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-05T12:22:17+08:00", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "end": { "local": "2037-12-06T09:50:37+08:00", "utc": "2037-12-06T01:50:37Z", "ms": 2143677037428.827 } }, "kaala": "nishita", "days": [ { "local_date": "2037-12-04", "window": { "start": { "local": "2037-12-04T23:29:14+08:00", "utc": "2037-12-04T15:29:14Z", "ms": 2143553354052.7134 }, "end": { "local": "2037-12-05T00:17:14+08:00", "utc": "2037-12-04T16:17:14Z", "ms": 2143556234052.7134 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-12-05", "window": { "start": { "local": "2037-12-05T23:29:39+08:00", "utc": "2037-12-05T15:29:39Z", "ms": 2143639778704.3223 }, "end": { "local": "2037-12-06T00:17:39+08:00", "utc": "2037-12-05T16:17:39Z", "ms": 2143642658704.3223 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:22 on Sat 5 Dec to 09:51 on Sun 6 Dec.", "fact": "2037-12-05T04:22:17Z → 2037-12-06T01:50:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:29–00:17 on the 4th, 23:30–00:18 on the 5th.", "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 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34379 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2037: Saturday 5 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": "2037-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2037 falls on Saturday 5 December. Caturdaśī runs from 12:22 on Sat 5 Dec to 09:51 on Sun 6 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2037/shivaratri?on=2037-12-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-12-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24988, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-12-10T04:18:09+08:00", "utc": "2037-12-09T20:18:09Z", "ms": 2144002689191.7322 }, "end": { "local": "2037-12-11T04:35:29+08:00", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-10T04:18:09+08:00", "utc": "2037-12-09T20:18:09Z", "ms": 2144002689191.7322 }, "end": { "local": "2037-12-11T04:35:29+08:00", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-10", "window": { "start": { "local": "2037-12-10T11:31:30+08:00", "utc": "2037-12-10T03:31:30Z", "ms": 2144028689677.045 }, "end": { "local": "2037-12-10T12:19:30+08:00", "utc": "2037-12-10T04:19:30Z", "ms": 2144031569677.045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-11", "window": { "start": { "local": "2037-12-11T11:31:57+08:00", "utc": "2037-12-11T03:31:57Z", "ms": 2144115117405.124 }, "end": { "local": "2037-12-11T12:19:57+08:00", "utc": "2037-12-11T04:19:57Z", "ms": 2144117997405.124 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:18 on Thu 10 Dec to 04:35 on Fri 11 Dec.", "fact": "2037-12-09T20:18:09Z → 2037-12-10T20:35:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 10th, 11:32–12:20 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24988 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2037: Thursday 10 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": "2037-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2037 falls on Thursday 10 December. Caturthī runs from 04:18 on Thu 10 Dec to 04:35 on Fri 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/vinayaka-chaturthi?on=2037-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21328, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-12-11T04:35:29+08:00", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "end": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-11T04:35:29+08:00", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "end": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-11", "window": { "start": { "local": "2037-12-11T11:31:57+08:00", "utc": "2037-12-11T03:31:57Z", "ms": 2144115117405.124 }, "end": { "local": "2037-12-11T12:19:57+08:00", "utc": "2037-12-11T04:19:57Z", "ms": 2144117997405.124 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:32:25+08:00", "utc": "2037-12-12T03:32:25Z", "ms": 2144201545497.4355 }, "end": { "local": "2037-12-12T12:20:25+08:00", "utc": "2037-12-12T04:20:25Z", "ms": 2144204425497.4355 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:35 on Fri 11 Dec to 05:37 on Sat 12 Dec.", "fact": "2037-12-10T20:35:29Z → 2037-12-11T21:36:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 11th, 11:32–12:20 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21328 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Fuzhou, 2037: Friday 11 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": "2037-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Pañcamī (Mārgaśīrṣa) 2037 falls on Friday 11 December. Pañcamī runs from 04:35 on Fri 11 Dec to 05:37 on Sat 12 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15305, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:32:25+08:00", "utc": "2037-12-12T03:32:25Z", "ms": 2144201545497.4355 }, "end": { "local": "2037-12-12T12:20:25+08:00", "utc": "2037-12-12T04:20:25Z", "ms": 2144204425497.4355 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:32:54+08:00", "utc": "2037-12-13T03:32:54Z", "ms": 2144287973921.2595 }, "end": { "local": "2037-12-13T12:20:54+08:00", "utc": "2037-12-13T04:20:54Z", "ms": 2144290853921.2595 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:37 on Sat 12 Dec to 07:18 on Sun 13 Dec.", "fact": "2037-12-11T21:36:57Z → 2037-12-12T23:17:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 12th, 11:33–12:21 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15305 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Fuzhou, 2037: Saturday 12 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": "2037-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Campā Ṣaṣṭhī 2037 falls on Saturday 12 December. Ṣaṣṭhī runs from 05:37 on Sat 12 Dec to 07:18 on Sun 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15305, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-12T05:36:57+08:00", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:32:25+08:00", "utc": "2037-12-12T03:32:25Z", "ms": 2144201545497.4355 }, "end": { "local": "2037-12-12T12:20:25+08:00", "utc": "2037-12-12T04:20:25Z", "ms": 2144204425497.4355 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:32:54+08:00", "utc": "2037-12-13T03:32:54Z", "ms": 2144287973921.2595 }, "end": { "local": "2037-12-13T12:20:54+08:00", "utc": "2037-12-13T04:20:54Z", "ms": 2144290853921.2595 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:37 on Sat 12 Dec to 07:18 on Sun 13 Dec.", "fact": "2037-12-11T21:36:57Z → 2037-12-12T23:17:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 12th, 11:33–12:21 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15305 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Fuzhou, 2037: Saturday 12 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": "2037-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Ṣaṣṭhī 2037 falls on Saturday 12 December. Ṣaṣṭhī runs from 05:37 on Sat 12 Dec to 07:18 on Sun 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7465, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "end": { "local": "2037-12-14T09:28:58+08:00", "utc": "2037-12-14T01:28:58Z", "ms": 2144366938094.3157 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-13T07:17:49+08:00", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "end": { "local": "2037-12-14T09:28:58+08:00", "utc": "2037-12-14T01:28:58Z", "ms": 2144366938094.3157 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:32:54+08:00", "utc": "2037-12-13T03:32:54Z", "ms": 2144287973921.2595 }, "end": { "local": "2037-12-13T12:20:54+08:00", "utc": "2037-12-13T04:20:54Z", "ms": 2144290853921.2595 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-14", "window": { "start": { "local": "2037-12-14T11:33:23+08:00", "utc": "2037-12-14T03:33:23Z", "ms": 2144374402644.005 }, "end": { "local": "2037-12-14T12:21:23+08:00", "utc": "2037-12-14T04:21:23Z", "ms": 2144377282644.005 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:18 on Sun 13 Dec to 09:29 on Mon 14 Dec.", "fact": "2037-12-12T23:17:49Z → 2037-12-14T01:28:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 13th, 11:33–12:21 on the 14th.", "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 13th and 0 of 48 on the 14th.", "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 7465 s" }, { "step": "ruling", "text": "Mitra Saptamī, Fuzhou, 2037: Sunday 13 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": "2037-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Mitra Saptamī 2037 falls on Sunday 13 December. Saptamī runs from 07:18 on Sun 13 Dec to 09:29 on Mon 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/ekadashi?on=2037-12-18", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36541, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-12-17T16:52:39+08:00", "utc": "2037-12-17T08:52:39Z", "ms": 2144652758854.4648 }, "end": { "local": "2037-12-18T18:53:21+08:00", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-17T16:52:39+08:00", "utc": "2037-12-17T08:52:39Z", "ms": 2144652758854.4648 }, "end": { "local": "2037-12-18T18:53:21+08:00", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-12-17", "window": { "start": { "local": "2037-12-17T06:43:38+08:00", "utc": "2037-12-16T22:43:38Z", "ms": 2144616218220.5884 }, "end": { "local": "2037-12-17T06:43:38+08:00", "utc": "2037-12-16T22:43:38Z", "ms": 2144616218220.5884 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-12-18", "window": { "start": { "local": "2037-12-18T06:44:12+08:00", "utc": "2037-12-17T22:44:12Z", "ms": 2144702652040.939 }, "end": { "local": "2037-12-18T06:44:12+08:00", "utc": "2037-12-17T22:44:12Z", "ms": 2144702652040.939 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:53 on Thu 17 Dec to 18:53 on Fri 18 Dec.", "fact": "2037-12-17T08:52:39Z → 2037-12-18T10:53:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:44 on the 17th and 06:44 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is 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 36541 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Fuzhou, 2037: Friday 18 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": "2037-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Mokṣadā Ekādaśī 2037 falls on Friday 18 December. Ekādaśī runs from 16:53 on Thu 17 Dec to 18:53 on Fri 18 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/ekadashi?on=2037-12-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23401, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-12-18T18:53:21+08:00", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "end": { "local": "2037-12-19T20:24:41+08:00", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-18T18:53:21+08:00", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "end": { "local": "2037-12-19T20:24:41+08:00", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-18", "window": { "start": { "local": "2037-12-18T11:35:20+08:00", "utc": "2037-12-18T03:35:20Z", "ms": 2144720119875.15 }, "end": { "local": "2037-12-18T12:23:20+08:00", "utc": "2037-12-18T04:23:20Z", "ms": 2144722999875.15 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-12-19", "window": { "start": { "local": "2037-12-19T11:35:50+08:00", "utc": "2037-12-19T03:35:50Z", "ms": 2144806549606.7024 }, "end": { "local": "2037-12-19T12:23:50+08:00", "utc": "2037-12-19T04:23:50Z", "ms": 2144809429606.7024 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:53 on Fri 18 Dec to 20:25 on Sat 19 Dec.", "fact": "2037-12-18T10:53:21Z → 2037-12-19T12:24:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 18th, 11:36–12:24 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23401 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Fuzhou, 2037: Saturday 19 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": "2037-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Akhaṇḍa Dvādaśī 2037 falls on Saturday 19 December. Dvādaśī runs from 18:53 on Fri 18 Dec to 20:25 on Sat 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2037/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": "/fuzhou/festivals/2037/pradosha-vrata?on=2037-12-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4904, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-12-19T20:24:41+08:00", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "end": { "local": "2037-12-20T21:22:42+08:00", "utc": "2037-12-20T13:22:42Z", "ms": 2144928162055.9055 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-19T20:24:41+08:00", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "end": { "local": "2037-12-20T21:22:42+08:00", "utc": "2037-12-20T13:22:42Z", "ms": 2144928162055.9055 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-19", "window": { "start": { "local": "2037-12-19T17:14:54+08:00", "utc": "2037-12-19T09:14:54Z", "ms": 2144826894303.91 }, "end": { "local": "2037-12-19T19:02:57+08:00", "utc": "2037-12-19T11:02:57Z", "ms": 2144833377302.2703 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2037-12-20", "window": { "start": { "local": "2037-12-20T17:15:22+08:00", "utc": "2037-12-20T09:15:22Z", "ms": 2144913322096.41 }, "end": { "local": "2037-12-20T19:03:26+08:00", "utc": "2037-12-20T11:03:26Z", "ms": 2144919805504.1023 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:25 on Sat 19 Dec to 21:23 on Sun 20 Dec.", "fact": "2037-12-19T12:24:41Z → 2037-12-20T13:22:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–19:03 on the 19th, 17:15–19:03 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 108 minutes on the 19th and 108 of 108 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 4904 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2037: Sunday 20 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": "2037-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2037 falls on Sunday 20 December. Trayodaśī runs from 20:25 on Sat 19 Dec to 21:23 on Sun 20 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/pradosha-vrata?on=2037-12-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9257, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-12-21T21:46:45+08:00", "utc": "2037-12-21T13:46:45Z", "ms": 2145016004877.27 }, "end": { "local": "2037-12-22T21:38:41+08:00", "utc": "2037-12-22T13:38:41Z", "ms": 2145101921248.4924 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-21T21:46:45+08:00", "utc": "2037-12-21T13:46:45Z", "ms": 2145016004877.27 }, "end": { "local": "2037-12-22T21:38:41+08:00", "utc": "2037-12-22T13:38:41Z", "ms": 2145101921248.4924 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-21", "window": { "start": { "local": "2037-12-21T17:15:51+08:00", "utc": "2037-12-21T09:15:51Z", "ms": 2144999751057.5195 }, "end": { "local": "2037-12-21T19:03:55+08:00", "utc": "2037-12-21T11:03:55Z", "ms": 2145006234578.548 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2037-12-22", "window": { "start": { "local": "2037-12-22T17:16:21+08:00", "utc": "2037-12-22T09:16:21Z", "ms": 2145086181157.3203 }, "end": { "local": "2037-12-22T19:04:24+08:00", "utc": "2037-12-22T11:04:24Z", "ms": 2145092664495.6355 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:47 on Mon 21 Dec to 21:39 on Tue 22 Dec.", "fact": "2037-12-21T13:46:45Z → 2037-12-22T13:38:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:16–19:04 on the 21st, 17:16–19:04 on the 22nd.", "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 108 minutes on the 21st and 108 of 108 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9257 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Fuzhou, 2037: Tuesday 22 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": "2037-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Dattātreyotpatti (Datta Jayanti) 2037 falls on Tuesday 22 December. Pūrṇimā runs from 21:47 on Mon 21 Dec to 21:39 on Tue 22 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2037/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-12-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2037, "local_date": "2037-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5031, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-12-25T18:39:17+08:00", "utc": "2037-12-25T10:39:17Z", "ms": 2145350356968.7573 }, "end": { "local": "2037-12-26T17:01:51+08:00", "utc": "2037-12-26T09:01:51Z", "ms": 2145430911267.037 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-25T18:39:17+08:00", "utc": "2037-12-25T10:39:17Z", "ms": 2145350356968.7573 }, "end": { "local": "2037-12-26T17:01:51+08:00", "utc": "2037-12-26T09:01:51Z", "ms": 2145430911267.037 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-12-25", "window": { "start": { "local": "2037-12-25T20:03:08+08:00", "utc": "2037-12-25T12:03:08Z", "ms": 2145355387657.8096 }, "end": { "local": "2037-12-25T20:03:08+08:00", "utc": "2037-12-25T12:03:08Z", "ms": 2145355387657.8096 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-12-26", "window": { "start": { "local": "2037-12-26T21:05:46+08:00", "utc": "2037-12-26T13:05:46Z", "ms": 2145445545908.2922 }, "end": { "local": "2037-12-26T21:05:46+08:00", "utc": "2037-12-26T13:05:46Z", "ms": 2145445545908.2922 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:39 on Fri 25 Dec to 17:02 on Sat 26 Dec.", "fact": "2037-12-25T10:39:17Z → 2037-12-26T09:01:51Z" }, { "step": "kaala", "text": "Moonrise is at 20:03 on the 25th and 21:06 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 25th and is not on the 26th.", "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 5031 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2037: Friday 25 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": "2037-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2037 falls on Friday 25 December. Caturthī runs from 18:39 on Fri 25 Dec to 17:02 on Sat 26 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2037/sankashta-chaturthi?on=2037-12-25", "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" } }