{ "id": "/fuzhou/festivals/2031", "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": 2031, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/fuzhou/festivals/2031/ekadashi?on=2031-01-04", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23560, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-01-03T13:23:20+08:00", "utc": "2031-01-03T05:23:20Z", "ms": 1925184200285.877 }, "end": { "local": "2031-01-04T15:50:20+08:00", "utc": "2031-01-04T07:50:20Z", "ms": 1925279419693.6309 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-01-03T13:23:20+08:00", "utc": "2031-01-03T05:23:20Z", "ms": 1925184200285.877 }, "end": { "local": "2031-01-04T15:50:20+08:00", "utc": "2031-01-04T07:50:20Z", "ms": 1925279419693.6309 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-01-03", "window": { "start": { "local": "2031-01-03T06:50:40+08:00", "utc": "2031-01-02T22:50:40Z", "ms": 1925160640158.0488 }, "end": { "local": "2031-01-03T06:50:40+08:00", "utc": "2031-01-02T22:50:40Z", "ms": 1925160640158.0488 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-01-04", "window": { "start": { "local": "2031-01-04T06:50:54+08:00", "utc": "2031-01-03T22:50:54Z", "ms": 1925247054129.6414 }, "end": { "local": "2031-01-04T06:50:54+08:00", "utc": "2031-01-03T22:50:54Z", "ms": 1925247054129.6414 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:23 on Fri 3 Jan to 15:50 on Sat 4 Jan.", "fact": "2031-01-03T05:23:20Z → 2031-01-04T07:50:20Z" }, { "step": "kaala", "text": "Sunrise is at 06:51 on the 3rd and 06:51 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 23560 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Fuzhou, 2031: Saturday 4 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": "2031-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Putradā Ekādaśī 2031 falls on Saturday 4 January. Ekādaśī runs from 13:23 on Fri 3 Jan to 15:50 on Sat 4 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-01-06", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-06", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2411, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-01-05T18:32:12+08:00", "utc": "2031-01-05T10:32:12Z", "ms": 1925375531822.3892 }, "end": { "local": "2031-01-06T21:17:49+08:00", "utc": "2031-01-06T13:17:49Z", "ms": 1925471869157.7637 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-01-05T18:32:12+08:00", "utc": "2031-01-05T10:32:12Z", "ms": 1925375531822.3892 }, "end": { "local": "2031-01-06T21:17:49+08:00", "utc": "2031-01-06T13:17:49Z", "ms": 1925471869157.7637 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-01-05", "window": { "start": { "local": "2031-01-05T17:24:52+08:00", "utc": "2031-01-05T09:24:52Z", "ms": 1925371491845.0776 }, "end": { "local": "2031-01-05T19:12:23+08:00", "utc": "2031-01-05T11:12:23Z", "ms": 1925377943301.902 } }, "covered_min": 40, "window_min": 108, "qualifies": true }, { "local_date": "2031-01-06", "window": { "start": { "local": "2031-01-06T17:25:34+08:00", "utc": "2031-01-06T09:25:34Z", "ms": 1925457934451.41 }, "end": { "local": "2031-01-06T19:13:02+08:00", "utc": "2031-01-06T11:13:02Z", "ms": 1925464381513.1929 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:32 on Sun 5 Jan to 21:18 on Mon 6 Jan.", "fact": "2031-01-05T10:32:12Z → 2031-01-06T13:17:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:25–19:12 on the 5th, 17:26–19:13 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 40 of 108 minutes on the 5th and 107 of 107 on the 6th.", "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 2411 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Monday 6 January.", "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": "2031-01-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-06", "confidence": "boundary" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Monday 6 January. Trayodaśī runs from 18:32 on Sun 5 Jan to 21:18 on Mon 6 Jan and covers all of pradoṣa that evening. It also reaches the previous evening for 40 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/2031/pradosha-vrata?on=2031-01-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-01-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 43489, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-01-12T07:55:28+08:00", "utc": "2031-01-11T23:55:28Z", "ms": 1925942128255.8928 }, "end": { "local": "2031-01-13T08:58:39+08:00", "utc": "2031-01-13T00:58:39Z", "ms": 1926032319365.7485 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-12T07:55:28+08:00", "utc": "2031-01-11T23:55:28Z", "ms": 1925942128255.8928 }, "end": { "local": "2031-01-13T08:58:39+08:00", "utc": "2031-01-13T00:58:39Z", "ms": 1926032319365.7485 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-01-11", "window": { "start": { "local": "2031-01-11T19:50:39+08:00", "utc": "2031-01-11T11:50:39Z", "ms": 1925898639269.6707 }, "end": { "local": "2031-01-11T19:50:39+08:00", "utc": "2031-01-11T11:50:39Z", "ms": 1925898639269.6707 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-01-12", "window": { "start": { "local": "2031-01-12T20:44:03+08:00", "utc": "2031-01-12T12:44:03Z", "ms": 1925988242808.0994 }, "end": { "local": "2031-01-12T20:44:03+08:00", "utc": "2031-01-12T12:44:03Z", "ms": 1925988242808.0994 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:55 on Sun 12 Jan to 08:59 on Mon 13 Jan.", "fact": "2031-01-11T23:55:28Z → 2031-01-13T00:58:39Z" }, { "step": "kaala", "text": "Moonrise is at 19:51 on the 11th and 20:44 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 43489 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Sunday 12 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Sunday 12 January. Caturthī runs from 07:55 on Sun 12 Jan to 08:59 on Mon 13 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-01-12", "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/2031/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24621, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-02-13T13:20:12+08:00", "utc": "2031-02-13T05:20:12Z", "ms": 1928726412042.5962 } }, "span": { "of": "transit", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 } }, "kaala": "sunset-day", "days": [ { "local_date": "2031-01-14", "window": { "start": { "local": "2031-01-13T17:30:45+08:00", "utc": "2031-01-13T09:30:45Z", "ms": 1926063045246.5146 }, "end": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2031-01-15", "window": { "start": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 }, "end": { "local": "2031-01-15T17:32:17+08:00", "utc": "2031-01-15T09:32:17Z", "ms": 1926235937004.9265 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2031-01-15", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:22 on Wed 15 Jan.", "fact": "2031-01-14T16:21:52Z · 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 17:32.", "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 14th and 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 sunset → only-day · margin 24621 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 15 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Fuzhou, 2031: Tuesday 14 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": "2031-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2031-01-14", "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": "2031-01-13", "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 2031 falls on Tuesday 14 January. It is kept the day before Pongal, which falls on Wednesday 15 January. The Sun enters Makara at 00:22 on Wed 15 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24621, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-02-13T13:20:12+08:00", "utc": "2031-02-13T05:20:12Z", "ms": 1928726412042.5962 } }, "span": { "of": "transit", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 } }, "kaala": "sunset-day", "days": [ { "local_date": "2031-01-14", "window": { "start": { "local": "2031-01-13T17:30:45+08:00", "utc": "2031-01-13T09:30:45Z", "ms": 1926063045246.5146 }, "end": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2031-01-15", "window": { "start": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 }, "end": { "local": "2031-01-15T17:32:17+08:00", "utc": "2031-01-15T09:32:17Z", "ms": 1926235937004.9265 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:22 on Wed 15 Jan.", "fact": "2031-01-14T16:21:52Z · 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 17:32.", "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 14th and 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 sunset → only-day · margin 24621 s" }, { "step": "ruling", "text": "Pongal, Fuzhou, 2031: Wednesday 15 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": "2031-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2031-01-15", "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": "2031-01-14", "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 2031 falls on Wednesday 15 January. The Sun enters Makara at 00:22 on Wed 15 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1312, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-02-13T13:20:12+08:00", "utc": "2031-02-13T05:20:12Z", "ms": 1928726412042.5962 } }, "span": { "of": "transit", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 } }, "kaala": "civil-day", "days": [ { "local_date": "2031-01-14", "window": { "start": { "local": "2031-01-14T00:00:00+08:00", "utc": "2031-01-13T16:00:00Z", "ms": 1926086400000 }, "end": { "local": "2031-01-15T00:00:00+08:00", "utc": "2031-01-14T16:00:00Z", "ms": 1926172800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2031-01-15", "window": { "start": { "local": "2031-01-15T00:00:00+08:00", "utc": "2031-01-14T16:00:00Z", "ms": 1926172800000 }, "end": { "local": "2031-01-16T00:00:00+08:00", "utc": "2031-01-15T16:00:00Z", "ms": 1926259200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:22 on Wed 15 Jan.", "fact": "2031-01-14T16:21:52Z · 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 15th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 1312 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Fuzhou, 2031: Wednesday 15 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": "2031-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2031-01-14", "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": "2031-01-15", "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 2031 falls on Wednesday 15 January. The Sun enters Makara at 00:22 on Wed 15 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24621, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-02-13T13:20:12+08:00", "utc": "2031-02-13T05:20:12Z", "ms": 1928726412042.5962 } }, "span": { "of": "transit", "start": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 }, "end": { "local": "2031-01-15T00:21:52+08:00", "utc": "2031-01-14T16:21:52Z", "ms": 1926174112368.1475 } }, "kaala": "sunset-day", "days": [ { "local_date": "2031-01-14", "window": { "start": { "local": "2031-01-13T17:30:45+08:00", "utc": "2031-01-13T09:30:45Z", "ms": 1926063045246.5146 }, "end": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2031-01-15", "window": { "start": { "local": "2031-01-14T17:31:31+08:00", "utc": "2031-01-14T09:31:31Z", "ms": 1926149491007.7993 }, "end": { "local": "2031-01-15T17:32:17+08:00", "utc": "2031-01-15T09:32:17Z", "ms": 1926235937004.9265 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2031-01-15", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:22 on Wed 15 Jan.", "fact": "2031-01-14T16:21:52Z · 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 17:32.", "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 14th and 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 sunset → only-day · margin 24621 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 15 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Fuzhou, 2031: Thursday 16 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": "2031-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-16", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2031-01-16", "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": "2031-01-15", "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 2031 falls on Thursday 16 January. It is kept the day after Pongal, which falls on Wednesday 15 January. The Sun enters Makara at 00:22 on Wed 15 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 14th and the 15th. Counted from sunrise, as in Orissa, it is 15 January.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-01-19", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8621, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-01-19T04:27:47+08:00", "utc": "2031-01-18T20:27:47Z", "ms": 1926534466650.9072 }, "end": { "local": "2031-01-20T01:49:04+08:00", "utc": "2031-01-19T17:49:04Z", "ms": 1926611343707.671 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-19T04:27:47+08:00", "utc": "2031-01-18T20:27:47Z", "ms": 1926534466650.9072 }, "end": { "local": "2031-01-20T01:49:04+08:00", "utc": "2031-01-19T17:49:04Z", "ms": 1926611343707.671 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-01-19", "window": { "start": { "local": "2031-01-19T06:51:27+08:00", "utc": "2031-01-18T22:51:27Z", "ms": 1926543087188.395 }, "end": { "local": "2031-01-19T06:51:27+08:00", "utc": "2031-01-18T22:51:27Z", "ms": 1926543087188.395 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-01-20", "window": { "start": { "local": "2031-01-20T06:51:17+08:00", "utc": "2031-01-19T22:51:17Z", "ms": 1926629477455.7522 }, "end": { "local": "2031-01-20T06:51:17+08:00", "utc": "2031-01-19T22:51:17Z", "ms": 1926629477455.7522 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:28 on Sun 19 Jan to 01:49 on Mon 20 Jan.", "fact": "2031-01-18T20:27:47Z → 2031-01-19T17:49:04Z" }, { "step": "kaala", "text": "Sunrise is at 06:51 on the 19th and 06:51 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is 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 8621 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Fuzhou, 2031: Sunday 19 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṣaṭtilā Ekādaśī 2031 falls on Sunday 19 January. Ekādaśī runs from 04:28 on Sun 19 Jan to 01:49 on Mon 20 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-01-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-21", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 191, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-01-20T22:46:02+08:00", "utc": "2031-01-20T14:46:02Z", "ms": 1926686762021.804 }, "end": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-20T22:46:02+08:00", "utc": "2031-01-20T14:46:02Z", "ms": 1926686762021.804 }, "end": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-01-20", "window": { "start": { "local": "2031-01-20T17:36:09+08:00", "utc": "2031-01-20T09:36:09Z", "ms": 1926668169313.3987 }, "end": { "local": "2031-01-20T19:22:09+08:00", "utc": "2031-01-20T11:22:09Z", "ms": 1926674528903.2317 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2031-01-21", "window": { "start": { "local": "2031-01-21T17:36:56+08:00", "utc": "2031-01-21T09:36:56Z", "ms": 1926754615989.8608 }, "end": { "local": "2031-01-21T19:22:48+08:00", "utc": "2031-01-21T11:22:48Z", "ms": 1926760967662.6514 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:46 on Mon 20 Jan to 19:26 on Tue 21 Jan.", "fact": "2031-01-20T14:46:02Z → 2031-01-21T11:25:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:36–19:22 on the 20th, 17:37–19:23 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 20th and 106 of 106 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 191 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Tuesday 21 January.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Tuesday 21 January. Trayodaśī runs from 22:46 on Mon 20 Jan to 19:26 on Tue 21 Jan and covers all of pradoṣa that evening. It is 3 min 11 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-01-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/shivaratri?on=2031-01-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15836, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 }, "end": { "local": "2031-01-22T15:57:40+08:00", "utc": "2031-01-22T07:57:40Z", "ms": 1926835060086.618 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 }, "end": { "local": "2031-01-22T15:57:40+08:00", "utc": "2031-01-22T07:57:40Z", "ms": 1926835060086.618 } }, "kaala": "nishita", "days": [ { "local_date": "2031-01-21", "window": { "start": { "local": "2031-01-21T23:49:55+08:00", "utc": "2031-01-21T15:49:55Z", "ms": 1926776994762.825 }, "end": { "local": "2031-01-22T00:37:55+08:00", "utc": "2031-01-21T16:37:55Z", "ms": 1926779874762.825 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-01-22", "window": { "start": { "local": "2031-01-22T23:50:11+08:00", "utc": "2031-01-22T15:50:11Z", "ms": 1926863411003.5356 }, "end": { "local": "2031-01-23T00:38:11+08:00", "utc": "2031-01-22T16:38:11Z", "ms": 1926866291003.5356 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:26 on Tue 21 Jan to 15:58 on Wed 22 Jan.", "fact": "2031-01-21T11:25:59Z → 2031-01-22T07:57:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 21st, 23:50–00:38 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15836 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Tuesday 21 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": "2031-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Tuesday 21 January. Caturdaśī runs from 19:26 on Tue 21 Jan to 15:58 on Wed 22 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-01-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32807, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 }, "end": { "local": "2031-01-22T15:57:40+08:00", "utc": "2031-01-22T07:57:40Z", "ms": 1926835060086.618 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-21T19:25:59+08:00", "utc": "2031-01-21T11:25:59Z", "ms": 1926761158546.6262 }, "end": { "local": "2031-01-22T15:57:40+08:00", "utc": "2031-01-22T07:57:40Z", "ms": 1926835060086.618 } }, "kaala": "arunodaya", "days": [ { "local_date": "2031-01-21", "window": { "start": { "local": "2031-01-21T05:05:07+08:00", "utc": "2031-01-20T21:05:07Z", "ms": 1926709506647.3137 }, "end": { "local": "2031-01-21T06:51:06+08:00", "utc": "2031-01-20T22:51:06Z", "ms": 1926715866237.1467 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2031-01-22", "window": { "start": { "local": "2031-01-22T05:05:02+08:00", "utc": "2031-01-21T21:05:02Z", "ms": 1926795901862.9985 }, "end": { "local": "2031-01-22T06:50:54+08:00", "utc": "2031-01-21T22:50:54Z", "ms": 1926802253535.789 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:26 on Tue 21 Jan to 15:58 on Wed 22 Jan.", "fact": "2031-01-21T11:25:59Z → 2031-01-22T07:57:40Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:05–06:51 on the 21st, 05:05–06:51 on the 22nd.", "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 106 minutes on the 21st and 106 of 106 on the 22nd.", "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 32807 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Fuzhou, 2031: Wednesday 22 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": "2031-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Tarpaṇa 2031 falls on Wednesday 22 January. Caturdaśī runs from 19:26 on Tue 21 Jan to 15:58 on Wed 22 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27817, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-01-26T04:07:41+08:00", "utc": "2031-01-25T20:07:41Z", "ms": 1927138060903.1707 }, "end": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-26T04:07:41+08:00", "utc": "2031-01-25T20:07:41Z", "ms": 1927138060903.1707 }, "end": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-01-26", "window": { "start": { "local": "2031-01-26T11:51:18+08:00", "utc": "2031-01-26T03:51:18Z", "ms": 1927165878213.4785 }, "end": { "local": "2031-01-26T12:39:18+08:00", "utc": "2031-01-26T04:39:18Z", "ms": 1927168758213.4785 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-01-27", "window": { "start": { "local": "2031-01-27T11:51:31+08:00", "utc": "2031-01-27T03:51:31Z", "ms": 1927252291227.0842 }, "end": { "local": "2031-01-27T12:39:31+08:00", "utc": "2031-01-27T04:39:31Z", "ms": 1927255171227.0842 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:08 on Sun 26 Jan to 02:33 on Mon 27 Jan.", "fact": "2031-01-25T20:07:41Z → 2031-01-26T18:32:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 26th, 11:52–12:40 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27817 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Fuzhou, 2031: Sunday 26 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": "2031-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2031 falls on Sunday 26 January. Caturthī runs from 04:08 on Sun 26 Jan to 02:33 on Mon 27 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25608, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-01-26T04:07:41+08:00", "utc": "2031-01-25T20:07:41Z", "ms": 1927138060903.1707 }, "end": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-26T04:07:41+08:00", "utc": "2031-01-25T20:07:41Z", "ms": 1927138060903.1707 }, "end": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-01-25", "window": { "start": { "local": "2031-01-25T17:40:02+08:00", "utc": "2031-01-25T09:40:02Z", "ms": 1927100402192.4766 }, "end": { "local": "2031-01-25T19:25:20+08:00", "utc": "2031-01-25T11:25:20Z", "ms": 1927106720297.6875 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2031-01-26", "window": { "start": { "local": "2031-01-26T17:40:48+08:00", "utc": "2031-01-26T09:40:48Z", "ms": 1927186848445.398 }, "end": { "local": "2031-01-26T19:25:58+08:00", "utc": "2031-01-26T11:25:58Z", "ms": 1927193157710.8743 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:08 on Sun 26 Jan to 02:33 on Mon 27 Jan.", "fact": "2031-01-25T20:07:41Z → 2031-01-26T18:32:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:40–19:25 on the 25th, 17:41–19:26 on the 26th.", "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 105 minutes on the 25th and 105 of 105 on the 26th.", "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 25608 s" }, { "step": "ruling", "text": "Tila Caturthī, Fuzhou, 2031: Sunday 26 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": "2031-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Tila Caturthī 2031 falls on Sunday 26 January. Caturthī runs from 04:08 on Sun 26 Jan to 02:33 on Mon 27 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33526, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "end": { "local": "2031-01-28T01:47:33+08:00", "utc": "2031-01-27T17:47:33Z", "ms": 1927302452891.2764 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "end": { "local": "2031-01-28T01:47:33+08:00", "utc": "2031-01-27T17:47:33Z", "ms": 1927302452891.2764 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-01-27", "window": { "start": { "local": "2031-01-27T11:51:31+08:00", "utc": "2031-01-27T03:51:31Z", "ms": 1927252291227.0842 }, "end": { "local": "2031-01-27T12:39:31+08:00", "utc": "2031-01-27T04:39:31Z", "ms": 1927255171227.0842 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-01-28", "window": { "start": { "local": "2031-01-28T11:51:43+08:00", "utc": "2031-01-28T03:51:43Z", "ms": 1927338703415.2373 }, "end": { "local": "2031-01-28T12:39:43+08:00", "utc": "2031-01-28T04:39:43Z", "ms": 1927341583415.2373 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:33 on Mon 27 Jan to 01:48 on Tue 28 Jan.", "fact": "2031-01-26T18:32:46Z → 2031-01-27T17:47:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 27th, 11:52–12:40 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33526 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Fuzhou, 2031: Monday 27 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": "2031-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Śrī Pañcamī 2031 falls on Monday 27 January. Pañcamī runs from 02:33 on Mon 27 Jan to 01:48 on Tue 28 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33526, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "end": { "local": "2031-01-28T01:47:33+08:00", "utc": "2031-01-27T17:47:33Z", "ms": 1927302452891.2764 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-27T02:32:46+08:00", "utc": "2031-01-26T18:32:46Z", "ms": 1927218765557.357 }, "end": { "local": "2031-01-28T01:47:33+08:00", "utc": "2031-01-27T17:47:33Z", "ms": 1927302452891.2764 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-01-27", "window": { "start": { "local": "2031-01-27T11:51:31+08:00", "utc": "2031-01-27T03:51:31Z", "ms": 1927252291227.0842 }, "end": { "local": "2031-01-27T12:39:31+08:00", "utc": "2031-01-27T04:39:31Z", "ms": 1927255171227.0842 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-01-28", "window": { "start": { "local": "2031-01-28T11:51:43+08:00", "utc": "2031-01-28T03:51:43Z", "ms": 1927338703415.2373 }, "end": { "local": "2031-01-28T12:39:43+08:00", "utc": "2031-01-28T04:39:43Z", "ms": 1927341583415.2373 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:33 on Mon 27 Jan to 01:48 on Tue 28 Jan.", "fact": "2031-01-26T18:32:46Z → 2031-01-27T17:47:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 27th, 11:52–12:40 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33526 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Fuzhou, 2031: Monday 27 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": "2031-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Vasanta Pañcamī 2031 falls on Monday 27 January. Pañcamī runs from 02:33 on Mon 27 Jan to 01:48 on Tue 28 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7692, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-01-29T01:55:29+08:00", "utc": "2031-01-28T17:55:29Z", "ms": 1927389329443.2212 }, "end": { "local": "2031-01-30T02:55:26+08:00", "utc": "2031-01-29T18:55:26Z", "ms": 1927479325930.6304 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-01-29T01:55:29+08:00", "utc": "2031-01-28T17:55:29Z", "ms": 1927389329443.2212 }, "end": { "local": "2031-01-30T02:55:26+08:00", "utc": "2031-01-29T18:55:26Z", "ms": 1927479325930.6304 } }, "kaala": "arunodaya", "days": [ { "local_date": "2031-01-29", "window": { "start": { "local": "2031-01-29T05:03:52+08:00", "utc": "2031-01-28T21:03:52Z", "ms": 1927400632442.4504 }, "end": { "local": "2031-01-29T06:48:44+08:00", "utc": "2031-01-28T22:48:44Z", "ms": 1927406923528.5647 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "2031-01-30", "window": { "start": { "local": "2031-01-30T05:03:37+08:00", "utc": "2031-01-29T21:03:37Z", "ms": 1927487017436.7107 }, "end": { "local": "2031-01-30T06:48:19+08:00", "utc": "2031-01-29T22:48:19Z", "ms": 1927493299193.746 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 01:55 on Wed 29 Jan to 02:55 on Thu 30 Jan.", "fact": "2031-01-28T17:55:29Z → 2031-01-29T18:55:26Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:04–06:49 on the 29th, 05:04–06:48 on the 30th.", "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 105 of 105 minutes on the 29th and 0 of 105 on the 30th.", "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 7692 s" }, { "step": "ruling", "text": "Ratha Saptamī, Fuzhou, 2031: Wednesday 29 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": "2031-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-01-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Ratha Saptamī 2031 falls on Wednesday 29 January. Saptamī runs from 01:55 on Wed 29 Jan to 02:55 on Thu 30 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-02-03", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10489, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-02-02T09:41:47+08:00", "utc": "2031-02-02T01:41:47Z", "ms": 1927762907021.2163 }, "end": { "local": "2031-02-03T12:27:33+08:00", "utc": "2031-02-03T04:27:33Z", "ms": 1927859252682.8887 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-02-02T09:41:47+08:00", "utc": "2031-02-02T01:41:47Z", "ms": 1927762907021.2163 }, "end": { "local": "2031-02-03T12:27:33+08:00", "utc": "2031-02-03T04:27:33Z", "ms": 1927859252682.8887 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-02-02", "window": { "start": { "local": "2031-02-02T06:46:58+08:00", "utc": "2031-02-01T22:46:58Z", "ms": 1927752417866.319 }, "end": { "local": "2031-02-02T06:46:58+08:00", "utc": "2031-02-01T22:46:58Z", "ms": 1927752417866.319 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-02-03", "window": { "start": { "local": "2031-02-03T06:46:28+08:00", "utc": "2031-02-02T22:46:28Z", "ms": 1927838788045.8914 }, "end": { "local": "2031-02-03T06:46:28+08:00", "utc": "2031-02-02T22:46:28Z", "ms": 1927838788045.8914 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:42 on Sun 2 Feb to 12:28 on Mon 3 Feb.", "fact": "2031-02-02T01:41:47Z → 2031-02-03T04:27:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 2nd and 06:46 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10489 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Fuzhou, 2031: Monday 3 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": "2031-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Jayā Ekādaśī 2031 falls on Monday 3 February. Ekādaśī runs from 09:42 on Sun 2 Feb to 12:28 on Mon 3 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-02-03", "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/2031/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 786, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-02-03T12:27:33+08:00", "utc": "2031-02-03T04:27:33Z", "ms": 1927859252682.8887 }, "end": { "local": "2031-02-04T15:05:05+08:00", "utc": "2031-02-04T07:05:05Z", "ms": 1927955104513.466 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-02-03T12:27:33+08:00", "utc": "2031-02-03T04:27:33Z", "ms": 1927859252682.8887 }, "end": { "local": "2031-02-04T15:05:05+08:00", "utc": "2031-02-04T07:05:05Z", "ms": 1927955104513.466 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-02-03", "window": { "start": { "local": "2031-02-03T11:52:39+08:00", "utc": "2031-02-03T03:52:39Z", "ms": 1927857159018.018 }, "end": { "local": "2031-02-03T12:40:39+08:00", "utc": "2031-02-03T04:40:39Z", "ms": 1927860039018.018 } }, "covered_min": 13, "window_min": 48, "qualifies": true }, { "local_date": "2031-02-04", "window": { "start": { "local": "2031-02-04T11:52:45+08:00", "utc": "2031-02-04T03:52:45Z", "ms": 1927943565366.2812 }, "end": { "local": "2031-02-04T12:40:45+08:00", "utc": "2031-02-04T04:40:45Z", "ms": 1927946445366.2812 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:28 on Mon 3 Feb to 15:05 on Tue 4 Feb.", "fact": "2031-02-03T04:27:33Z → 2031-02-04T07:05:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 3rd, 11:53–12:41 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 13 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 786 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Fuzhou, 2031: Monday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Bhīṣma Dvādaśī 2031 falls on Monday 3 February. Dvādaśī runs from 12:28 on Mon 3 Feb to 15:05 on Tue 4 Feb and covers 13 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-02-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1443, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-02-04T15:05:05+08:00", "utc": "2031-02-04T07:05:05Z", "ms": 1927955104513.466 }, "end": { "local": "2031-02-05T17:24:14+08:00", "utc": "2031-02-05T09:24:14Z", "ms": 1928049854106.6616 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-02-04T15:05:05+08:00", "utc": "2031-02-04T07:05:05Z", "ms": 1927955104513.466 }, "end": { "local": "2031-02-05T17:24:14+08:00", "utc": "2031-02-05T09:24:14Z", "ms": 1928049854106.6616 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-02-04", "window": { "start": { "local": "2031-02-04T17:47:34+08:00", "utc": "2031-02-04T09:47:34Z", "ms": 1927964853828.5576 }, "end": { "local": "2031-02-04T19:31:17+08:00", "utc": "2031-02-04T11:31:17Z", "ms": 1927971076579.7644 } }, "covered_min": 104, "window_min": 104, "qualifies": true }, { "local_date": "2031-02-05", "window": { "start": { "local": "2031-02-05T17:48:17+08:00", "utc": "2031-02-05T09:48:17Z", "ms": 1928051297316.8225 }, "end": { "local": "2031-02-05T19:31:50+08:00", "utc": "2031-02-05T11:31:50Z", "ms": 1928057509773.8503 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:05 on Tue 4 Feb to 17:24 on Wed 5 Feb.", "fact": "2031-02-04T07:05:05Z → 2031-02-05T09:24:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:48–19:31 on the 4th, 17:48–19:32 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 104 of 104 minutes on the 4th and 0 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 1443 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Tuesday 4 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": "2031-02-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Tuesday 4 February. Trayodaśī runs from 15:05 on Tue 4 Feb to 17:24 on Wed 5 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-02-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23874, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-02-06T19:18:50+08:00", "utc": "2031-02-06T11:18:50Z", "ms": 1928143129512.5574 }, "end": { "local": "2031-02-07T20:46:14+08:00", "utc": "2031-02-07T12:46:14Z", "ms": 1928234773626.9807 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2031-02-06T19:18:50+08:00", "utc": "2031-02-06T11:18:50Z", "ms": 1928143129512.5574 }, "end": { "local": "2031-02-07T20:46:14+08:00", "utc": "2031-02-07T12:46:14Z", "ms": 1928234773626.9807 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-02-06", "window": { "start": { "local": "2031-02-06T11:52:56+08:00", "utc": "2031-02-06T03:52:56Z", "ms": 1928116375594.6956 }, "end": { "local": "2031-02-06T12:40:56+08:00", "utc": "2031-02-06T04:40:56Z", "ms": 1928119255594.6956 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-02-07", "window": { "start": { "local": "2031-02-07T11:52:59+08:00", "utc": "2031-02-07T03:52:59Z", "ms": 1928202779488.8262 }, "end": { "local": "2031-02-07T12:40:59+08:00", "utc": "2031-02-07T04:40:59Z", "ms": 1928205659488.8262 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:19 on Thu 6 Feb to 20:46 on Fri 7 Feb.", "fact": "2031-02-06T11:18:50Z → 2031-02-07T12:46:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 6th, 11:53–12:41 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23874 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Fuzhou, 2031: Friday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maghi-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Maghi purnima (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Māghī Pūrṇimā 2031 falls on Friday 7 February. Pūrṇimā runs from 19:19 on Thu 6 Feb to 20:46 on Fri 7 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-02-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3301, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-02-10T22:31:43+08:00", "utc": "2031-02-10T14:31:43Z", "ms": 1928500302757.1445 }, "end": { "local": "2031-02-11T22:20:13+08:00", "utc": "2031-02-11T14:20:13Z", "ms": 1928586013107.3608 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-02-10T22:31:43+08:00", "utc": "2031-02-10T14:31:43Z", "ms": 1928500302757.1445 }, "end": { "local": "2031-02-11T22:20:13+08:00", "utc": "2031-02-11T14:20:13Z", "ms": 1928586013107.3608 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-02-10", "window": { "start": { "local": "2031-02-10T20:28:39+08:00", "utc": "2031-02-10T12:28:39Z", "ms": 1928492919435.0942 }, "end": { "local": "2031-02-10T20:28:39+08:00", "utc": "2031-02-10T12:28:39Z", "ms": 1928492919435.0942 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-02-11", "window": { "start": { "local": "2031-02-11T21:25:12+08:00", "utc": "2031-02-11T13:25:12Z", "ms": 1928582712020.351 }, "end": { "local": "2031-02-11T21:25:12+08:00", "utc": "2031-02-11T13:25:12Z", "ms": 1928582712020.351 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:32 on Mon 10 Feb to 22:20 on Tue 11 Feb.", "fact": "2031-02-10T14:31:43Z → 2031-02-11T14:20:13Z" }, { "step": "kaala", "text": "Moonrise is at 20:29 on the 10th and 21:25 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3301 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Tuesday 11 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": "2031-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Tuesday 11 February. Caturthī runs from 22:32 on Mon 10 Feb to 22:20 on Tue 11 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-02-11", "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/2031/ekadashi?on=2031-02-18", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15685, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-02-17T13:35:50+08:00", "utc": "2031-02-17T05:35:50Z", "ms": 1929072949716.1775 }, "end": { "local": "2031-02-18T10:58:01+08:00", "utc": "2031-02-18T02:58:01Z", "ms": 1929149880772.0686 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-02-17T13:35:50+08:00", "utc": "2031-02-17T05:35:50Z", "ms": 1929072949716.1775 }, "end": { "local": "2031-02-18T10:58:01+08:00", "utc": "2031-02-18T02:58:01Z", "ms": 1929149880772.0686 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-02-17", "window": { "start": { "local": "2031-02-17T06:37:23+08:00", "utc": "2031-02-16T22:37:23Z", "ms": 1929047842775.1008 }, "end": { "local": "2031-02-17T06:37:23+08:00", "utc": "2031-02-16T22:37:23Z", "ms": 1929047842775.1008 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-02-18", "window": { "start": { "local": "2031-02-18T06:36:36+08:00", "utc": "2031-02-17T22:36:36Z", "ms": 1929134195727.755 }, "end": { "local": "2031-02-18T06:36:36+08:00", "utc": "2031-02-17T22:36:36Z", "ms": 1929134195727.755 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:36 on Mon 17 Feb to 10:58 on Tue 18 Feb.", "fact": "2031-02-17T05:35:50Z → 2031-02-18T02:58:01Z" }, { "step": "kaala", "text": "Sunrise is at 06:37 on the 17th and 06:37 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 15685 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Fuzhou, 2031: Tuesday 18 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Vijayā Ekādaśī 2031 falls on Tuesday 18 February. Ekādaśī runs from 13:36 on Mon 17 Feb to 10:58 on Tue 18 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-02-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-02-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34575, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-02-19T08:08:43+08:00", "utc": "2031-02-19T00:08:43Z", "ms": 1929226123204.9907 }, "end": { "local": "2031-02-20T05:14:58+08:00", "utc": "2031-02-19T21:14:58Z", "ms": 1929302098466.2764 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-02-19T08:08:43+08:00", "utc": "2031-02-19T00:08:43Z", "ms": 1929226123204.9907 }, "end": { "local": "2031-02-20T05:14:58+08:00", "utc": "2031-02-19T21:14:58Z", "ms": 1929302098466.2764 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-02-18", "window": { "start": { "local": "2031-02-18T17:57:08+08:00", "utc": "2031-02-18T09:57:08Z", "ms": 1929175027990.2905 }, "end": { "local": "2031-02-18T19:38:17+08:00", "utc": "2031-02-18T11:38:17Z", "ms": 1929181097290.059 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "2031-02-19", "window": { "start": { "local": "2031-02-19T17:57:46+08:00", "utc": "2031-02-19T09:57:46Z", "ms": 1929261466032.9563 }, "end": { "local": "2031-02-19T19:38:44+08:00", "utc": "2031-02-19T11:38:44Z", "ms": 1929267523739.3857 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:09 on Wed 19 Feb to 05:15 on Thu 20 Feb.", "fact": "2031-02-19T00:08:43Z → 2031-02-19T21:14:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:38 on the 18th, 17:58–19:39 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 101 minutes on the 18th and 101 of 101 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34575 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Wednesday 19 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": "2031-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Wednesday 19 February. Trayodaśī runs from 08:09 on Wed 19 Feb to 05:15 on Thu 20 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-02-19", "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/2031/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6297, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-02-20T05:14:58+08:00", "utc": "2031-02-19T21:14:58Z", "ms": 1929302098466.2764 }, "end": { "local": "2031-02-21T02:25:13+08:00", "utc": "2031-02-20T18:25:13Z", "ms": 1929378313066.773 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-02-20T05:14:58+08:00", "utc": "2031-02-19T21:14:58Z", "ms": 1929302098466.2764 }, "end": { "local": "2031-02-21T02:25:13+08:00", "utc": "2031-02-20T18:25:13Z", "ms": 1929378313066.773 } }, "kaala": "nishita", "days": [ { "local_date": "2031-02-19", "window": { "start": { "local": "2031-02-19T23:52:22+08:00", "utc": "2031-02-19T15:52:22Z", "ms": 1929282742432.0671 }, "end": { "local": "2031-02-20T00:40:22+08:00", "utc": "2031-02-19T16:40:22Z", "ms": 1929285622432.0671 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-02-20", "window": { "start": { "local": "2031-02-20T23:52:16+08:00", "utc": "2031-02-20T15:52:16Z", "ms": 1929369136346.2256 }, "end": { "local": "2031-02-21T00:40:16+08:00", "utc": "2031-02-20T16:40:16Z", "ms": 1929372016346.2256 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:15 on Thu 20 Feb to 02:25 on Fri 21 Feb.", "fact": "2031-02-19T21:14:58Z → 2031-02-20T18:25:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:52–00:40 on the 19th, 23:52–00:40 on the 20th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 6297 s" }, { "step": "ruling", "text": "Mahāśivarātri, Fuzhou, 2031: Thursday 20 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": "2031-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahāśivarātri 2031 falls on Thursday 20 February. Caturdaśī runs from 05:15 on Thu 20 Feb to 02:25 on Fri 21 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-02-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21866, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-02-24T18:56:28+08:00", "utc": "2031-02-24T10:56:28Z", "ms": 1929696987781.4875 }, "end": { "local": "2031-02-25T18:44:30+08:00", "utc": "2031-02-25T10:44:30Z", "ms": 1929782669699.9353 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-02-24T18:56:28+08:00", "utc": "2031-02-24T10:56:28Z", "ms": 1929696987781.4875 }, "end": { "local": "2031-02-25T18:44:30+08:00", "utc": "2031-02-25T10:44:30Z", "ms": 1929782669699.9353 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-02-24", "window": { "start": { "local": "2031-02-24T11:52:12+08:00", "utc": "2031-02-24T03:52:12Z", "ms": 1929671532246.771 }, "end": { "local": "2031-02-24T12:40:12+08:00", "utc": "2031-02-24T04:40:12Z", "ms": 1929674412246.771 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-02-25", "window": { "start": { "local": "2031-02-25T11:52:03+08:00", "utc": "2031-02-25T03:52:03Z", "ms": 1929757923440.8838 }, "end": { "local": "2031-02-25T12:40:03+08:00", "utc": "2031-02-25T04:40:03Z", "ms": 1929760803440.8838 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:56 on Mon 24 Feb to 18:44 on Tue 25 Feb.", "fact": "2031-02-24T10:56:28Z → 2031-02-25T10:44:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 24th, 11:52–12:40 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21866 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Tuesday 25 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": "2031-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-02-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Tuesday 25 February. Caturthī runs from 18:56 on Mon 24 Feb to 18:44 on Tue 25 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-02-25", "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/2031/ekadashi?on=2031-03-05", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 629, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-03-04T06:34:38+08:00", "utc": "2031-03-03T22:34:38Z", "ms": 1930343677777.034 }, "end": { "local": "2031-03-05T08:50:02+08:00", "utc": "2031-03-05T00:50:02Z", "ms": 1930438201661.8745 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-03-04T06:34:38+08:00", "utc": "2031-03-03T22:34:38Z", "ms": 1930343677777.034 }, "end": { "local": "2031-03-05T08:50:02+08:00", "utc": "2031-03-05T00:50:02Z", "ms": 1930438201661.8745 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-03-04", "window": { "start": { "local": "2031-03-04T06:24:09+08:00", "utc": "2031-03-03T22:24:09Z", "ms": 1930343048946.163 }, "end": { "local": "2031-03-04T06:24:09+08:00", "utc": "2031-03-03T22:24:09Z", "ms": 1930343048946.163 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-03-05", "window": { "start": { "local": "2031-03-05T06:23:10+08:00", "utc": "2031-03-04T22:23:10Z", "ms": 1930429390320.4773 }, "end": { "local": "2031-03-05T06:23:10+08:00", "utc": "2031-03-04T22:23:10Z", "ms": 1930429390320.4773 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:35 on Tue 4 Mar to 08:50 on Wed 5 Mar.", "fact": "2031-03-03T22:34:38Z → 2031-03-05T00:50:02Z" }, { "step": "kaala", "text": "Sunrise is at 06:24 on the 4th and 06:23 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 629 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Fuzhou, 2031: Wednesday 5 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": "2031-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Āmalakī Ekādaśī 2031 falls on Wednesday 5 March. Ekādaśī runs from 06:35 on Tue 4 Mar to 08:50 on Wed 5 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-03-05", "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/2031/pradosha-vrata?on=2031-03-06", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22718, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-03-06T10:36:17+08:00", "utc": "2031-03-06T02:36:17Z", "ms": 1930530977100.5232 }, "end": { "local": "2031-03-07T11:48:21+08:00", "utc": "2031-03-07T03:48:21Z", "ms": 1930621700969.6995 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-03-06T10:36:17+08:00", "utc": "2031-03-06T02:36:17Z", "ms": 1930530977100.5232 }, "end": { "local": "2031-03-07T11:48:21+08:00", "utc": "2031-03-07T03:48:21Z", "ms": 1930621700969.6995 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-03-06", "window": { "start": { "local": "2031-03-06T18:06:28+08:00", "utc": "2031-03-06T10:06:28Z", "ms": 1930557987604.0117 }, "end": { "local": "2031-03-06T19:44:25+08:00", "utc": "2031-03-06T11:44:25Z", "ms": 1930563865446.827 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "2031-03-07", "window": { "start": { "local": "2031-03-07T18:06:59+08:00", "utc": "2031-03-07T10:06:59Z", "ms": 1930644419354.0613 }, "end": { "local": "2031-03-07T19:44:45+08:00", "utc": "2031-03-07T11:44:45Z", "ms": 1930650284935.513 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:36 on Thu 6 Mar to 11:48 on Fri 7 Mar.", "fact": "2031-03-06T02:36:17Z → 2031-03-07T03:48:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:06–19:44 on the 6th, 18:07–19:45 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 98 of 98 minutes on the 6th and 0 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 22718 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Thursday 6 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": "2031-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Thursday 6 March. Trayodaśī runs from 10:36 on Thu 6 Mar to 11:48 on Fri 7 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11796, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-03-08T12:25:23+08:00", "utc": "2031-03-08T04:25:23Z", "ms": 1930710322940.4373 }, "end": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-03-08T12:25:23+08:00", "utc": "2031-03-08T04:25:23Z", "ms": 1930710322940.4373 }, "end": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 } }, "kaala": "sayahna", "days": [ { "local_date": "2031-03-08", "window": { "start": { "local": "2031-03-08T15:46:03+08:00", "utc": "2031-03-08T07:46:03Z", "ms": 1930722362873.9407 }, "end": { "local": "2031-03-08T18:07:31+08:00", "utc": "2031-03-08T10:07:31Z", "ms": 1930730850788.6887 } }, "covered_min": 141, "window_min": 141, "qualifies": true }, { "local_date": "2031-03-09", "window": { "start": { "local": "2031-03-09T15:46:16+08:00", "utc": "2031-03-09T07:46:16Z", "ms": 1930808775645.5188 }, "end": { "local": "2031-03-09T18:08:02+08:00", "utc": "2031-03-09T10:08:02Z", "ms": 1930817281923.0195 } }, "covered_min": 0, "window_min": 142, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:25 on Sat 8 Mar to 12:30 on Sun 9 Mar.", "fact": "2031-03-08T04:25:23Z → 2031-03-09T04:29:40Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:46–18:08 on the 8th, 15:46–18:08 on the 9th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 141 of 141 minutes on the 8th and 0 of 142 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11796 s" }, { "step": "ruling", "text": "Holikā Dahana, Fuzhou, 2031: Saturday 8 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": "2031-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Holikā Dahana 2031 falls on Saturday 8 March. Pūrṇimā runs from 12:25 on Sat 8 Mar to 12:30 on Sun 9 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11796, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-03-08T12:25:23+08:00", "utc": "2031-03-08T04:25:23Z", "ms": 1930710322940.4373 }, "end": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2031-03-08T12:25:23+08:00", "utc": "2031-03-08T04:25:23Z", "ms": 1930710322940.4373 }, "end": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 } }, "kaala": "sayahna", "days": [ { "local_date": "2031-03-08", "window": { "start": { "local": "2031-03-08T15:46:03+08:00", "utc": "2031-03-08T07:46:03Z", "ms": 1930722362873.9407 }, "end": { "local": "2031-03-08T18:07:31+08:00", "utc": "2031-03-08T10:07:31Z", "ms": 1930730850788.6887 } }, "covered_min": 141, "window_min": 141, "qualifies": true }, { "local_date": "2031-03-09", "window": { "start": { "local": "2031-03-09T15:46:16+08:00", "utc": "2031-03-09T07:46:16Z", "ms": 1930808775645.5188 }, "end": { "local": "2031-03-09T18:08:02+08:00", "utc": "2031-03-09T10:08:02Z", "ms": 1930817281923.0195 } }, "covered_min": 0, "window_min": 142, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2031-03-08", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:25 on Sat 8 Mar to 12:30 on Sun 9 Mar.", "fact": "2031-03-08T04:25:23Z → 2031-03-09T04:29:40Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:46–18:08 on the 8th, 15:46–18:08 on the 9th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 141 of 141 minutes on the 8th and 0 of 142 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11796 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Saturday 8 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Fuzhou, 2031: Sunday 9 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": "2031-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Holī 2031 falls on Sunday 9 March. It is kept the day after Holikā Dahana, which falls on Saturday 8 March. Pūrṇimā runs from 12:25 on Sat 8 Mar to 12:30 on Sun 9 Mar and covers all of sāyāhna on the 8th.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20832, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 }, "end": { "local": "2031-03-10T12:05:21+08:00", "utc": "2031-03-10T04:05:21Z", "ms": 1930881921451.0364 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-09T12:29:40+08:00", "utc": "2031-03-09T04:29:40Z", "ms": 1930796980113.019 }, "end": { "local": "2031-03-10T12:05:21+08:00", "utc": "2031-03-10T04:05:21Z", "ms": 1930881921451.0364 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-03-09", "window": { "start": { "local": "2031-03-09T06:19:11+08:00", "utc": "2031-03-08T22:19:11Z", "ms": 1930774750535.5164 }, "end": { "local": "2031-03-09T06:19:11+08:00", "utc": "2031-03-08T22:19:11Z", "ms": 1930774750535.5164 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-03-10", "window": { "start": { "local": "2031-03-10T06:18:09+08:00", "utc": "2031-03-09T22:18:09Z", "ms": 1930861089417.6619 }, "end": { "local": "2031-03-10T06:18:09+08:00", "utc": "2031-03-09T22:18:09Z", "ms": 1930861089417.6619 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 12:30 on Sun 9 Mar to 12:05 on Mon 10 Mar.", "fact": "2031-03-09T04:29:40Z → 2031-03-10T04:05:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:19 on the 9th and 06:18 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20832 s" }, { "step": "ruling", "text": "Vasantotsava, Fuzhou, 2031: Monday 10 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasantotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "sunrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Vasantotsava 2031 falls on Monday 10 March. Pratipadā runs from 12:30 on Sun 9 Mar to 12:05 on Mon 10 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-03-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40016, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-03-12T10:10:15+08:00", "utc": "2031-03-12T02:10:15Z", "ms": 1931047815441.1648 }, "end": { "local": "2031-03-13T08:48:07+08:00", "utc": "2031-03-13T00:48:07Z", "ms": 1931129286939.719 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-12T10:10:15+08:00", "utc": "2031-03-12T02:10:15Z", "ms": 1931047815441.1648 }, "end": { "local": "2031-03-13T08:48:07+08:00", "utc": "2031-03-13T00:48:07Z", "ms": 1931129286939.719 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-03-12", "window": { "start": { "local": "2031-03-12T21:17:12+08:00", "utc": "2031-03-12T13:17:12Z", "ms": 1931087831531.592 }, "end": { "local": "2031-03-12T21:17:12+08:00", "utc": "2031-03-12T13:17:12Z", "ms": 1931087831531.592 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-03-13", "window": { "start": { "local": "2031-03-13T22:18:57+08:00", "utc": "2031-03-13T14:18:57Z", "ms": 1931177937236.0771 }, "end": { "local": "2031-03-13T22:18:57+08:00", "utc": "2031-03-13T14:18:57Z", "ms": 1931177937236.0771 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:10 on Wed 12 Mar to 08:48 on Thu 13 Mar.", "fact": "2031-03-12T02:10:15Z → 2031-03-13T00:48:07Z" }, { "step": "kaala", "text": "Moonrise is at 21:17 on the 12th and 22:19 on the 13th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 12th and is not on the 13th.", "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 40016 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Wednesday 12 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Wednesday 12 March. Caturthī runs from 10:10 on Wed 12 Mar to 08:48 on Thu 13 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-03-12", "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/2031/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29523, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-03-16T03:35:41+08:00", "utc": "2031-03-15T19:35:41Z", "ms": 1931369741252.238 }, "end": { "local": "2031-03-17T01:34:07+08:00", "utc": "2031-03-16T17:34:07Z", "ms": 1931448846597.2395 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-16T03:35:41+08:00", "utc": "2031-03-15T19:35:41Z", "ms": 1931369741252.238 }, "end": { "local": "2031-03-17T01:34:07+08:00", "utc": "2031-03-16T17:34:07Z", "ms": 1931448846597.2395 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-16", "window": { "start": { "local": "2031-03-16T11:47:44+08:00", "utc": "2031-03-16T03:47:44Z", "ms": 1931399264040.2532 }, "end": { "local": "2031-03-16T12:35:44+08:00", "utc": "2031-03-16T04:35:44Z", "ms": 1931402144040.2532 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-17", "window": { "start": { "local": "2031-03-17T11:47:27+08:00", "utc": "2031-03-17T03:47:27Z", "ms": 1931485647037.0754 }, "end": { "local": "2031-03-17T12:35:27+08:00", "utc": "2031-03-17T04:35:27Z", "ms": 1931488527037.0754 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:36 on Sun 16 Mar to 01:34 on Mon 17 Mar.", "fact": "2031-03-15T19:35:41Z → 2031-03-16T17:34:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 16th, 11:47–12:35 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29523 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Fuzhou, 2031: Sunday 16 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Śītalāṣṭamī 2031 falls on Sunday 16 March. Aṣṭamī runs from 03:36 on Sun 16 Mar to 01:34 on Mon 17 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-03-19", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32125, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-03-18T21:13:19+08:00", "utc": "2031-03-18T13:13:19Z", "ms": 1931605999435.3364 }, "end": { "local": "2031-03-19T18:59:49+08:00", "utc": "2031-03-19T10:59:49Z", "ms": 1931684389339.2017 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-18T21:13:19+08:00", "utc": "2031-03-18T13:13:19Z", "ms": 1931605999435.3364 }, "end": { "local": "2031-03-19T18:59:49+08:00", "utc": "2031-03-19T10:59:49Z", "ms": 1931684389339.2017 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-03-19", "window": { "start": { "local": "2031-03-19T06:08:45+08:00", "utc": "2031-03-18T22:08:45Z", "ms": 1931638124646.9604 }, "end": { "local": "2031-03-19T06:08:45+08:00", "utc": "2031-03-18T22:08:45Z", "ms": 1931638124646.9604 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-03-20", "window": { "start": { "local": "2031-03-20T06:07:41+08:00", "utc": "2031-03-19T22:07:41Z", "ms": 1931724460796.598 }, "end": { "local": "2031-03-20T06:07:41+08:00", "utc": "2031-03-19T22:07:41Z", "ms": 1931724460796.598 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:13 on Tue 18 Mar to 19:00 on Wed 19 Mar.", "fact": "2031-03-18T13:13:19Z → 2031-03-19T10:59:49Z" }, { "step": "kaala", "text": "Sunrise is at 06:09 on the 19th and 06:08 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 32125 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Fuzhou, 2031: Wednesday 19 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": "2031-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Pāpamocanī Ekādaśī 2031 falls on Wednesday 19 March. Ekādaśī runs from 21:13 on Tue 18 Mar to 19:00 on Wed 19 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-03-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-03-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4997, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-03-20T16:50:12+08:00", "utc": "2031-03-20T08:50:12Z", "ms": 1931763012028.5952 }, "end": { "local": "2031-03-21T14:50:30+08:00", "utc": "2031-03-21T06:50:30Z", "ms": 1931842229711.7 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-20T16:50:12+08:00", "utc": "2031-03-20T08:50:12Z", "ms": 1931763012028.5952 }, "end": { "local": "2031-03-21T14:50:30+08:00", "utc": "2031-03-21T06:50:30Z", "ms": 1931842229711.7 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-03-20", "window": { "start": { "local": "2031-03-20T18:13:29+08:00", "utc": "2031-03-20T10:13:29Z", "ms": 1931768009255.215 }, "end": { "local": "2031-03-20T19:48:34+08:00", "utc": "2031-03-20T11:48:34Z", "ms": 1931773714264.569 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2031-03-21", "window": { "start": { "local": "2031-03-21T18:13:58+08:00", "utc": "2031-03-21T10:13:58Z", "ms": 1931854438005.4436 }, "end": { "local": "2031-03-21T19:48:51+08:00", "utc": "2031-03-21T11:48:51Z", "ms": 1931860130639.0527 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:50 on Thu 20 Mar to 14:50 on Fri 21 Mar.", "fact": "2031-03-20T08:50:12Z → 2031-03-21T06:50:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:49 on the 20th, 18:14–19:49 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 20th and 0 of 95 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4997 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Thursday 20 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": "2031-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Thursday 20 March. Trayodaśī runs from 16:50 on Thu 20 Mar to 14:50 on Fri 21 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-03-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/shivaratri?on=2031-03-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32116, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-03-21T14:50:30+08:00", "utc": "2031-03-21T06:50:30Z", "ms": 1931842229711.7 }, "end": { "local": "2031-03-22T13:07:40+08:00", "utc": "2031-03-22T05:07:40Z", "ms": 1931922460206.0198 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-21T14:50:30+08:00", "utc": "2031-03-21T06:50:30Z", "ms": 1931842229711.7 }, "end": { "local": "2031-03-22T13:07:40+08:00", "utc": "2031-03-22T05:07:40Z", "ms": 1931922460206.0198 } }, "kaala": "nishita", "days": [ { "local_date": "2031-03-21", "window": { "start": { "local": "2031-03-21T23:45:45+08:00", "utc": "2031-03-21T15:45:45Z", "ms": 1931874345381.4778 }, "end": { "local": "2031-03-22T00:33:45+08:00", "utc": "2031-03-21T16:33:45Z", "ms": 1931877225381.4778 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-22", "window": { "start": { "local": "2031-03-22T23:45:28+08:00", "utc": "2031-03-22T15:45:28Z", "ms": 1931960727626.0244 }, "end": { "local": "2031-03-23T00:33:28+08:00", "utc": "2031-03-22T16:33:28Z", "ms": 1931963607626.0244 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:50 on Fri 21 Mar to 13:08 on Sat 22 Mar.", "fact": "2031-03-21T06:50:30Z → 2031-03-22T05:07:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 21st, 23:45–00:33 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32116 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Friday 21 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": "2031-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Friday 21 March. Caturdaśī runs from 14:50 on Fri 21 Mar to 13:08 on Sat 22 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-03-21", "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/2031/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-23", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 205, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-03-23T11:49:07+08:00", "utc": "2031-03-23T03:49:07Z", "ms": 1932004146567.6162 }, "end": { "local": "2031-03-24T11:01:55+08:00", "utc": "2031-03-24T03:01:55Z", "ms": 1932087715002.7222 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-23T11:49:07+08:00", "utc": "2031-03-23T03:49:07Z", "ms": 1932004146567.6162 }, "end": { "local": "2031-03-24T11:01:55+08:00", "utc": "2031-03-24T03:01:55Z", "ms": 1932087715002.7222 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-23", "window": { "start": { "local": "2031-03-23T11:45:42+08:00", "utc": "2031-03-23T03:45:42Z", "ms": 1932003941885.1685 }, "end": { "local": "2031-03-23T12:33:42+08:00", "utc": "2031-03-23T04:33:42Z", "ms": 1932006821885.1685 } }, "covered_min": 45, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-24", "window": { "start": { "local": "2031-03-24T11:45:24+08:00", "utc": "2031-03-24T03:45:24Z", "ms": 1932090323997.789 }, "end": { "local": "2031-03-24T12:33:24+08:00", "utc": "2031-03-24T04:33:24Z", "ms": 1932093203997.789 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 11:49 on Sun 23 Mar to 11:02 on Mon 24 Mar.", "fact": "2031-03-23T03:49:07Z → 2031-03-24T03:01:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 23rd, 11:45–12:33 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 45 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 205 s < 300 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Fuzhou, 2031: Sunday 23 March.", "fact": "confidence: boundary (margin)" } ], "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": "2031-03-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Navarātrārambha (Caitra) (Chaitra Navratri) 2031 falls on Sunday 23 March. Pratipadā runs from 11:49 on Sun 23 Mar to 11:02 on Mon 24 Mar and covers 45 of 48 minutes of madhyāhna that midday. It is 3 min 25 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1305, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-03-25T10:52:01+08:00", "utc": "2031-03-25T02:52:01Z", "ms": 1932173520690.221 }, "end": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-25T10:52:01+08:00", "utc": "2031-03-25T02:52:01Z", "ms": 1932173520690.221 }, "end": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-25", "window": { "start": { "local": "2031-03-25T11:45:06+08:00", "utc": "2031-03-25T03:45:06Z", "ms": 1932176706050.5679 }, "end": { "local": "2031-03-25T12:33:06+08:00", "utc": "2031-03-25T04:33:06Z", "ms": 1932179586050.5679 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-26", "window": { "start": { "local": "2031-03-26T11:44:48+08:00", "utc": "2031-03-26T03:44:48Z", "ms": 1932263088060.1313 }, "end": { "local": "2031-03-26T12:32:48+08:00", "utc": "2031-03-26T04:32:48Z", "ms": 1932265968060.1313 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:52 on Tue 25 Mar to 11:23 on Wed 26 Mar.", "fact": "2031-03-25T02:52:01Z → 2031-03-26T03:23:03Z" }, { "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": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1305 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Fuzhou, 2031: Tuesday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-25", "confidence": "boundary" } ], "quote": "In Fuzhou, Gaurī Tṛtīyā (Gangaur) 2031 falls on Tuesday 25 March. Tṛtīyā runs from 10:52 on Tue 25 Mar to 11:23 on Wed 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1305, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-03-25T10:52:01+08:00", "utc": "2031-03-25T02:52:01Z", "ms": 1932173520690.221 }, "end": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-25T10:52:01+08:00", "utc": "2031-03-25T02:52:01Z", "ms": 1932173520690.221 }, "end": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-25", "window": { "start": { "local": "2031-03-25T11:45:06+08:00", "utc": "2031-03-25T03:45:06Z", "ms": 1932176706050.5679 }, "end": { "local": "2031-03-25T12:33:06+08:00", "utc": "2031-03-25T04:33:06Z", "ms": 1932179586050.5679 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-26", "window": { "start": { "local": "2031-03-26T11:44:48+08:00", "utc": "2031-03-26T03:44:48Z", "ms": 1932263088060.1313 }, "end": { "local": "2031-03-26T12:32:48+08:00", "utc": "2031-03-26T04:32:48Z", "ms": 1932265968060.1313 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:52 on Tue 25 Mar to 11:23 on Wed 26 Mar.", "fact": "2031-03-25T02:52:01Z → 2031-03-26T03:23:03Z" }, { "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": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1305 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Fuzhou, 2031: Tuesday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-26", "confidence": "boundary" } ], "quote": "In Fuzhou, Saubhāgya Śayana Vrata 2031 falls on Tuesday 25 March. Tṛtīyā runs from 10:52 on Tue 25 Mar to 11:23 on Wed 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-03-26", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-26", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 167, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 }, "end": { "local": "2031-03-27T12:35:17+08:00", "utc": "2031-03-27T04:35:17Z", "ms": 1932352516607.2979 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-26T11:23:03+08:00", "utc": "2031-03-26T03:23:03Z", "ms": 1932261782961.478 }, "end": { "local": "2031-03-27T12:35:17+08:00", "utc": "2031-03-27T04:35:17Z", "ms": 1932352516607.2979 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-26", "window": { "start": { "local": "2031-03-26T11:44:48+08:00", "utc": "2031-03-26T03:44:48Z", "ms": 1932263088060.1313 }, "end": { "local": "2031-03-26T12:32:48+08:00", "utc": "2031-03-26T04:32:48Z", "ms": 1932265968060.1313 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-03-27", "window": { "start": { "local": "2031-03-27T11:44:30+08:00", "utc": "2031-03-27T03:44:30Z", "ms": 1932349470043.5513 }, "end": { "local": "2031-03-27T12:32:30+08:00", "utc": "2031-03-27T04:32:30Z", "ms": 1932352350043.5513 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:23 on Wed 26 Mar to 12:35 on Thu 27 Mar.", "fact": "2031-03-26T03:23:03Z → 2031-03-27T04:35:17Z" }, { "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": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 167 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Wednesday 26 March.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-03-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-26", "confidence": "boundary" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Wednesday 26 March. Caturthī runs from 11:23 on Wed 26 Mar to 12:35 on Thu 27 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 2 min 47 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-03-26", "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/2031/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-28", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 167, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-03-27T12:35:17+08:00", "utc": "2031-03-27T04:35:17Z", "ms": 1932352516607.2979 }, "end": { "local": "2031-03-28T14:24:35+08:00", "utc": "2031-03-28T06:24:35Z", "ms": 1932445474726.0823 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-27T12:35:17+08:00", "utc": "2031-03-27T04:35:17Z", "ms": 1932352516607.2979 }, "end": { "local": "2031-03-28T14:24:35+08:00", "utc": "2031-03-28T06:24:35Z", "ms": 1932445474726.0823 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-27", "window": { "start": { "local": "2031-03-27T11:44:30+08:00", "utc": "2031-03-27T03:44:30Z", "ms": 1932349470043.5513 }, "end": { "local": "2031-03-27T12:32:30+08:00", "utc": "2031-03-27T04:32:30Z", "ms": 1932352350043.5513 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-03-28", "window": { "start": { "local": "2031-03-28T11:44:12+08:00", "utc": "2031-03-28T03:44:12Z", "ms": 1932435852018.372 }, "end": { "local": "2031-03-28T12:32:12+08:00", "utc": "2031-03-28T04:32:12Z", "ms": 1932438732018.372 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:35 on Thu 27 Mar to 14:25 on Fri 28 Mar.", "fact": "2031-03-27T04:35:17Z → 2031-03-28T06:24:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 27th, 11:44–12:32 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 167 s < 300 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Fuzhou, 2031: Friday 28 March.", "fact": "confidence: boundary (margin)" } ], "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": "2031-03-28", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Lakṣmī Pañcamī 2031 falls on Friday 28 March. Pañcamī runs from 12:35 on Thu 27 Mar to 14:25 on Fri 28 Mar and covers all of madhyāhna that midday. It is 2 min 47 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24199, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-03-30T19:14:55+08:00", "utc": "2031-03-30T11:14:55Z", "ms": 1932635695194.2983 }, "end": { "local": "2031-03-31T21:47:38+08:00", "utc": "2031-03-31T13:47:38Z", "ms": 1932731258230.2432 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-30T19:14:55+08:00", "utc": "2031-03-30T11:14:55Z", "ms": 1932635695194.2983 }, "end": { "local": "2031-03-31T21:47:38+08:00", "utc": "2031-03-31T13:47:38Z", "ms": 1932731258230.2432 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-30", "window": { "start": { "local": "2031-03-30T11:43:36+08:00", "utc": "2031-03-30T03:43:36Z", "ms": 1932608616014.6094 }, "end": { "local": "2031-03-30T12:31:36+08:00", "utc": "2031-03-30T04:31:36Z", "ms": 1932611496014.6094 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-03-31", "window": { "start": { "local": "2031-03-31T11:43:18+08:00", "utc": "2031-03-31T03:43:18Z", "ms": 1932694998073.184 }, "end": { "local": "2031-03-31T12:31:18+08:00", "utc": "2031-03-31T04:31:18Z", "ms": 1932697878073.184 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:15 on Sun 30 Mar to 21:48 on Mon 31 Mar.", "fact": "2031-03-30T11:14:55Z → 2031-03-31T13:47:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 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": "Aṣṭamī 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 24199 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Fuzhou, 2031: Monday 31 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": "2031-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-03-31", "confidence": "determinate" } ], "quote": "In Fuzhou, Bhavānī Utpatti 2031 falls on Monday 31 March. Aṣṭamī runs from 19:15 on Sun 30 Mar to 21:48 on Mon 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33380, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2031-03-31T21:47:38+08:00", "utc": "2031-03-31T13:47:38Z", "ms": 1932731258230.2432 }, "end": { "local": "2031-04-02T00:04:57+08:00", "utc": "2031-04-01T16:04:57Z", "ms": 1932825896786.6658 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-03-31T21:47:38+08:00", "utc": "2031-03-31T13:47:38Z", "ms": 1932731258230.2432 }, "end": { "local": "2031-04-02T00:04:57+08:00", "utc": "2031-04-01T16:04:57Z", "ms": 1932825896786.6658 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-03-31", "window": { "start": { "local": "2031-03-31T11:43:18+08:00", "utc": "2031-03-31T03:43:18Z", "ms": 1932694998073.184 }, "end": { "local": "2031-03-31T12:31:18+08:00", "utc": "2031-03-31T04:31:18Z", "ms": 1932697878073.184 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-04-01", "window": { "start": { "local": "2031-04-01T11:43:00+08:00", "utc": "2031-04-01T03:43:00Z", "ms": 1932781380197.395 }, "end": { "local": "2031-04-01T12:31:00+08:00", "utc": "2031-04-01T04:31:00Z", "ms": 1932784260197.395 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 21:48 on Mon 31 Mar to 00:05 on Wed 2 Apr.", "fact": "2031-03-31T13:47:38Z → 2031-04-01T16:04:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 31st, 11:43–12:31 on the 1st.", "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 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33380 s" }, { "step": "ruling", "text": "Rāma Navamī, Fuzhou, 2031: Tuesday 1 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Rāma Navamī 2031 falls on Tuesday 1 April. Navamī runs from 21:48 on Mon 31 Mar to 00:05 on Wed 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-04-03", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9936, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-04-03T01:54:00+08:00", "utc": "2031-04-02T17:54:00Z", "ms": 1932918840255.692 }, "end": { "local": "2031-04-04T03:06:06+08:00", "utc": "2031-04-03T19:06:06Z", "ms": 1933009565857.9392 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-04-03T01:54:00+08:00", "utc": "2031-04-02T17:54:00Z", "ms": 1932918840255.692 }, "end": { "local": "2031-04-04T03:06:06+08:00", "utc": "2031-04-03T19:06:06Z", "ms": 1933009565857.9392 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-04-03", "window": { "start": { "local": "2031-04-03T05:52:45+08:00", "utc": "2031-04-02T21:52:45Z", "ms": 1932933165170.7292 }, "end": { "local": "2031-04-03T05:52:45+08:00", "utc": "2031-04-02T21:52:45Z", "ms": 1932933165170.7292 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-04-04", "window": { "start": { "local": "2031-04-04T05:51:42+08:00", "utc": "2031-04-03T21:51:42Z", "ms": 1933019502073.9653 }, "end": { "local": "2031-04-04T05:51:42+08:00", "utc": "2031-04-03T21:51:42Z", "ms": 1933019502073.9653 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:54 on Thu 3 Apr to 03:06 on Fri 4 Apr.", "fact": "2031-04-02T17:54:00Z → 2031-04-03T19:06:06Z" }, { "step": "kaala", "text": "Sunrise is at 05:53 on the 3rd and 05:52 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 9936 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Fuzhou, 2031: Thursday 3 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": "2031-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Kāmadā Ekādaśī 2031 falls on Thursday 3 April. Ekādaśī runs from 01:54 on Thu 3 Apr to 03:06 on Fri 4 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-04-03", "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/2031/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29079, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-04-05T03:37:11+08:00", "utc": "2031-04-04T19:37:11Z", "ms": 1933097830942.5107 }, "end": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-04-05T03:37:11+08:00", "utc": "2031-04-04T19:37:11Z", "ms": 1933097830942.5107 }, "end": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-05", "window": { "start": { "local": "2031-04-05T11:41:50+08:00", "utc": "2031-04-05T03:41:50Z", "ms": 1933126909743.9749 }, "end": { "local": "2031-04-05T12:29:50+08:00", "utc": "2031-04-05T04:29:50Z", "ms": 1933129789743.9749 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-06", "window": { "start": { "local": "2031-04-06T11:41:32+08:00", "utc": "2031-04-06T03:41:32Z", "ms": 1933213292494.917 }, "end": { "local": "2031-04-06T12:29:32+08:00", "utc": "2031-04-06T04:29:32Z", "ms": 1933216172494.917 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:37 on Sat 5 Apr to 03:27 on Sun 6 Apr.", "fact": "2031-04-04T19:37:11Z → 2031-04-05T19:27:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 5th, 11:42–12:30 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29079 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Fuzhou, 2031: Saturday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Anaṅga Trayodaśī 2031 falls on Saturday 5 April. Trayodaśī runs from 03:37 on Sat 5 Apr to 03:27 on Sun 6 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-04-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27278, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-04-05T03:37:11+08:00", "utc": "2031-04-04T19:37:11Z", "ms": 1933097830942.5107 }, "end": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-04-05T03:37:11+08:00", "utc": "2031-04-04T19:37:11Z", "ms": 1933097830942.5107 }, "end": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-04-04", "window": { "start": { "local": "2031-04-04T18:20:32+08:00", "utc": "2031-04-04T10:20:32Z", "ms": 1933064432245.1868 }, "end": { "local": "2031-04-04T19:52:33+08:00", "utc": "2031-04-04T11:52:33Z", "ms": 1933069953177.1746 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "2031-04-05", "window": { "start": { "local": "2031-04-05T18:21:00+08:00", "utc": "2031-04-05T10:21:00Z", "ms": 1933150860252.8542 }, "end": { "local": "2031-04-05T19:52:49+08:00", "utc": "2031-04-05T11:52:49Z", "ms": 1933156369110.0952 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:37 on Sat 5 Apr to 03:27 on Sun 6 Apr.", "fact": "2031-04-04T19:37:11Z → 2031-04-05T19:27:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:53 on the 4th, 18:21–19:53 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 92 minutes on the 4th and 92 of 92 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27278 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Saturday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Saturday 5 April. Trayodaśī runs from 03:37 on Sat 5 Apr to 03:27 on Sun 6 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29646, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 }, "end": { "local": "2031-04-07T02:40:20+08:00", "utc": "2031-04-06T18:40:20Z", "ms": 1933267219675.7578 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-04-06T03:27:27+08:00", "utc": "2031-04-05T19:27:27Z", "ms": 1933183646938.1326 }, "end": { "local": "2031-04-07T02:40:20+08:00", "utc": "2031-04-06T18:40:20Z", "ms": 1933267219675.7578 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-06", "window": { "start": { "local": "2031-04-06T11:41:32+08:00", "utc": "2031-04-06T03:41:32Z", "ms": 1933213292494.917 }, "end": { "local": "2031-04-06T12:29:32+08:00", "utc": "2031-04-06T04:29:32Z", "ms": 1933216172494.917 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-07", "window": { "start": { "local": "2031-04-07T11:41:15+08:00", "utc": "2031-04-07T03:41:15Z", "ms": 1933299675433.9307 }, "end": { "local": "2031-04-07T12:29:15+08:00", "utc": "2031-04-07T04:29:15Z", "ms": 1933302555433.9307 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:27 on Sun 6 Apr to 02:40 on Mon 7 Apr.", "fact": "2031-04-05T19:27:27Z → 2031-04-06T18:40:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 6th, 11:41–12:29 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29646 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Fuzhou, 2031: Sunday 6 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vishnu-damanaka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Madanabhanji, (Bengal & Orissa) (paraviddha), Sivadamanaka caturdasi, Visnudamanaka caturdasi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Viṣṇudamanaka Caturdaśī 2031 falls on Sunday 6 April. Caturdaśī runs from 03:27 on Sun 6 Apr to 02:40 on Mon 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32456, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-04-07T02:40:20+08:00", "utc": "2031-04-06T18:40:20Z", "ms": 1933267219675.7578 }, "end": { "local": "2031-04-08T01:21:21+08:00", "utc": "2031-04-07T17:21:21Z", "ms": 1933348880519.8816 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2031-04-07T02:40:20+08:00", "utc": "2031-04-06T18:40:20Z", "ms": 1933267219675.7578 }, "end": { "local": "2031-04-08T01:21:21+08:00", "utc": "2031-04-07T17:21:21Z", "ms": 1933348880519.8816 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-07", "window": { "start": { "local": "2031-04-07T11:41:15+08:00", "utc": "2031-04-07T03:41:15Z", "ms": 1933299675433.9307 }, "end": { "local": "2031-04-07T12:29:15+08:00", "utc": "2031-04-07T04:29:15Z", "ms": 1933302555433.9307 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-08", "window": { "start": { "local": "2031-04-08T11:40:59+08:00", "utc": "2031-04-08T03:40:59Z", "ms": 1933386058582.9019 }, "end": { "local": "2031-04-08T12:28:59+08:00", "utc": "2031-04-08T04:28:59Z", "ms": 1933388938582.9019 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:40 on Mon 7 Apr to 01:21 on Tue 8 Apr.", "fact": "2031-04-06T18:40:20Z → 2031-04-07T17:21:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 7th, 11:41–12:29 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32456 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Fuzhou, 2031: Monday 7 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chaitri-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Caitrī Pūrṇimā 2031 falls on Monday 7 April. Pūrṇimā runs from 02:40 on Mon 7 Apr to 01:21 on Tue 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-04-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6744, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-04-10T19:19:33+08:00", "utc": "2031-04-10T11:19:33Z", "ms": 1933586372592.242 }, "end": { "local": "2031-04-11T16:58:30+08:00", "utc": "2031-04-11T08:58:30Z", "ms": 1933664310436.9841 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-10T19:19:33+08:00", "utc": "2031-04-10T11:19:33Z", "ms": 1933586372592.242 }, "end": { "local": "2031-04-11T16:58:30+08:00", "utc": "2031-04-11T08:58:30Z", "ms": 1933664310436.9841 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-04-10", "window": { "start": { "local": "2031-04-10T21:11:57+08:00", "utc": "2031-04-10T13:11:57Z", "ms": 1933593117020.3455 }, "end": { "local": "2031-04-10T21:11:57+08:00", "utc": "2031-04-10T13:11:57Z", "ms": 1933593117020.3455 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-04-11", "window": { "start": { "local": "2031-04-11T22:14:34+08:00", "utc": "2031-04-11T14:14:34Z", "ms": 1933683273850.5393 }, "end": { "local": "2031-04-11T22:14:34+08:00", "utc": "2031-04-11T14:14:34Z", "ms": 1933683273850.5393 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:20 on Thu 10 Apr to 16:59 on Fri 11 Apr.", "fact": "2031-04-10T11:19:33Z → 2031-04-11T08:58:30Z" }, { "step": "kaala", "text": "Moonrise is at 21:12 on the 10th and 22:15 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6744 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Thursday 10 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": "2031-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Thursday 10 April. Caturthī runs from 19:20 on Thu 10 Apr to 16:59 on Fri 11 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-04-10", "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/2031/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39637, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2031-04-14T18:39:55+08:00", "utc": "2031-04-14T10:39:55Z", "ms": 1933929594514.7532 }, "end": { "local": "2031-05-15T15:29:42+08:00", "utc": "2031-05-15T07:29:42Z", "ms": 1936596581993.9219 } }, "span": { "of": "transit", "start": { "local": "2031-04-14T18:39:55+08:00", "utc": "2031-04-14T10:39:55Z", "ms": 1933929594514.7532 }, "end": { "local": "2031-04-14T18:39:55+08:00", "utc": "2031-04-14T10:39:55Z", "ms": 1933929594514.7532 } }, "kaala": "day", "days": [ { "local_date": "2031-04-14", "window": { "start": { "local": "2031-04-14T05:41:30+08:00", "utc": "2031-04-13T21:41:30Z", "ms": 1933882890024.9114 }, "end": { "local": "2031-04-15T05:40:31+08:00", "utc": "2031-04-14T21:40:31Z", "ms": 1933969231346.5535 } }, "covered_min": 1, "window_min": 1439, "qualifies": true }, { "local_date": "2031-04-15", "window": { "start": { "local": "2031-04-15T05:40:31+08:00", "utc": "2031-04-14T21:40:31Z", "ms": 1933969231346.5535 }, "end": { "local": "2031-04-16T05:39:33+08:00", "utc": "2031-04-15T21:39:33Z", "ms": 1934055573238.02 } }, "covered_min": 0, "window_min": 1439, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 18:40 on Mon 14 Apr.", "fact": "2031-04-14T10:39:55Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:42 on the 14th, and from 05:41 on the 15th.", "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 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 sunrise → only-day · margin 39637 s" }, { "step": "ruling", "text": "Vaiśākhī, Fuzhou, 2031: Monday 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": "2031-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2031-04-14", "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": "2031-04-15", "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 2031 falls on Monday 14 April. The Sun enters Meṣa at 18:40 on Mon 14 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 15 April.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-04-17", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4756, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-04-17T04:19:20+08:00", "utc": "2031-04-16T20:19:20Z", "ms": 1934137159571.5627 }, "end": { "local": "2031-04-18T02:53:30+08:00", "utc": "2031-04-17T18:53:30Z", "ms": 1934218409789.9941 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-17T04:19:20+08:00", "utc": "2031-04-16T20:19:20Z", "ms": 1934137159571.5627 }, "end": { "local": "2031-04-18T02:53:30+08:00", "utc": "2031-04-17T18:53:30Z", "ms": 1934218409789.9941 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-04-17", "window": { "start": { "local": "2031-04-17T05:38:36+08:00", "utc": "2031-04-16T21:38:36Z", "ms": 1934141915723.9011 }, "end": { "local": "2031-04-17T05:38:36+08:00", "utc": "2031-04-16T21:38:36Z", "ms": 1934141915723.9011 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-04-18", "window": { "start": { "local": "2031-04-18T05:37:39+08:00", "utc": "2031-04-17T21:37:39Z", "ms": 1934228258827.6301 }, "end": { "local": "2031-04-18T05:37:39+08:00", "utc": "2031-04-17T21:37:39Z", "ms": 1934228258827.6301 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:19 on Thu 17 Apr to 02:53 on Fri 18 Apr.", "fact": "2031-04-16T20:19:20Z → 2031-04-17T18:53:30Z" }, { "step": "kaala", "text": "Sunrise is at 05:39 on the 17th and 05:38 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4756 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Fuzhou, 2031: Thursday 17 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": "2031-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Varūthinī Ekādaśī 2031 falls on Thursday 17 April. Ekādaśī runs from 04:19 on Thu 17 Apr to 02:53 on Fri 18 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-04-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-04-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18363, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-04-19T01:46:50+08:00", "utc": "2031-04-18T17:46:50Z", "ms": 1934300809632.1096 }, "end": { "local": "2031-04-20T01:02:51+08:00", "utc": "2031-04-19T17:02:51Z", "ms": 1934384570649.751 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-19T01:46:50+08:00", "utc": "2031-04-18T17:46:50Z", "ms": 1934300809632.1096 }, "end": { "local": "2031-04-20T01:02:51+08:00", "utc": "2031-04-19T17:02:51Z", "ms": 1934384570649.751 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-04-18", "window": { "start": { "local": "2031-04-18T18:27:13+08:00", "utc": "2031-04-18T10:27:13Z", "ms": 1934274433488.6277 }, "end": { "local": "2031-04-18T19:56:29+08:00", "utc": "2031-04-18T11:56:29Z", "ms": 1934279789366.3567 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "2031-04-19", "window": { "start": { "local": "2031-04-19T18:27:43+08:00", "utc": "2031-04-19T10:27:43Z", "ms": 1934360863235.7192 }, "end": { "local": "2031-04-19T19:56:48+08:00", "utc": "2031-04-19T11:56:48Z", "ms": 1934366207734.5977 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:47 on Sat 19 Apr to 01:03 on Sun 20 Apr.", "fact": "2031-04-18T17:46:50Z → 2031-04-19T17:02:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–19:56 on the 18th, 18:28–19:57 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 89 minutes on the 18th and 89 of 89 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18363 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Saturday 19 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": "2031-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Saturday 19 April. Trayodaśī runs from 01:47 on Sat 19 Apr to 01:03 on Sun 20 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-04-19", "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/2031/shivaratri?on=2031-04-20", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1178, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-04-20T01:02:51+08:00", "utc": "2031-04-19T17:02:51Z", "ms": 1934384570649.751 }, "end": { "local": "2031-04-21T00:45:11+08:00", "utc": "2031-04-20T16:45:11Z", "ms": 1934469910593.7542 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-20T01:02:51+08:00", "utc": "2031-04-19T17:02:51Z", "ms": 1934384570649.751 }, "end": { "local": "2031-04-21T00:45:11+08:00", "utc": "2031-04-20T16:45:11Z", "ms": 1934469910593.7542 } }, "kaala": "nishita", "days": [ { "local_date": "2031-04-19", "window": { "start": { "local": "2031-04-19T23:37:45+08:00", "utc": "2031-04-19T15:37:45Z", "ms": 1934379465106.5132 }, "end": { "local": "2031-04-20T00:25:45+08:00", "utc": "2031-04-19T16:25:45Z", "ms": 1934382345106.5132 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-04-20", "window": { "start": { "local": "2031-04-20T23:37:33+08:00", "utc": "2031-04-20T15:37:33Z", "ms": 1934465852607.23 }, "end": { "local": "2031-04-21T00:25:33+08:00", "utc": "2031-04-20T16:25:33Z", "ms": 1934468732607.23 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:03 on Sun 20 Apr to 00:45 on Mon 21 Apr.", "fact": "2031-04-19T17:02:51Z → 2031-04-20T16:45:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 19th, 23:38–00:26 on the 20th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1178 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Sunday 20 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": "2031-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Sunday 20 April. Caturdaśī runs from 01:03 on Sun 20 Apr to 00:45 on Mon 21 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2867, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-04-24T02:57:05+08:00", "utc": "2031-04-23T18:57:05Z", "ms": 1934737025499.4553 }, "end": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-24T02:57:05+08:00", "utc": "2031-04-23T18:57:05Z", "ms": 1934737025499.4553 }, "end": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 } }, "kaala": "purvahna", "days": [ { "local_date": "2031-04-24", "window": { "start": { "local": "2031-04-24T05:32:12+08:00", "utc": "2031-04-23T21:32:12Z", "ms": 1934746331629.5527 }, "end": { "local": "2031-04-24T09:51:33+08:00", "utc": "2031-04-24T01:51:33Z", "ms": 1934761892558.544 } }, "covered_min": 259, "window_min": 259, "qualifies": true }, { "local_date": "2031-04-25", "window": { "start": { "local": "2031-04-25T05:31:20+08:00", "utc": "2031-04-24T21:31:20Z", "ms": 1934832679651.23 }, "end": { "local": "2031-04-25T09:51:08+08:00", "utc": "2031-04-25T01:51:08Z", "ms": 1934848268141.0356 } }, "covered_min": 0, "window_min": 260, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:57 on Thu 24 Apr to 04:44 on Fri 25 Apr.", "fact": "2031-04-23T18:57:05Z → 2031-04-24T20:43:33Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:32–09:52 on the 24th, 05:31–09:51 on the 25th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 259 of 259 minutes on the 24th and 0 of 260 on the 25th.", "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 2867 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Fuzhou, 2031: Thursday 24 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": "2031-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Akṣaya Tṛtīyā 2031 falls on Thursday 24 April. Tṛtīyā runs from 02:57 on Thu 24 Apr to 04:44 on Fri 25 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25142, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-04-24T02:57:05+08:00", "utc": "2031-04-23T18:57:05Z", "ms": 1934737025499.4553 }, "end": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-24T02:57:05+08:00", "utc": "2031-04-23T18:57:05Z", "ms": 1934737025499.4553 }, "end": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-04-23", "window": { "start": { "local": "2031-04-23T18:29:44+08:00", "utc": "2031-04-23T10:29:44Z", "ms": 1934706583863.5005 }, "end": { "local": "2031-04-23T19:58:04+08:00", "utc": "2031-04-23T11:58:04Z", "ms": 1934711883565.6409 } }, "covered_min": 0, "window_min": 88, "qualifies": false }, { "local_date": "2031-04-24", "window": { "start": { "local": "2031-04-24T18:30:14+08:00", "utc": "2031-04-24T10:30:14Z", "ms": 1934793014416.5264 }, "end": { "local": "2031-04-24T19:58:23+08:00", "utc": "2031-04-24T11:58:23Z", "ms": 1934798303114.4868 } }, "covered_min": 88, "window_min": 88, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:57 on Thu 24 Apr to 04:44 on Fri 25 Apr.", "fact": "2031-04-23T18:57:05Z → 2031-04-24T20:43:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–19:58 on the 23rd, 18:30–19:58 on the 24th.", "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 88 minutes on the 23rd and 88 of 88 on the 24th.", "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 25142 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Fuzhou, 2031: Thursday 24 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": "2031-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Paraśurāma Jayantī 2031 falls on Thursday 24 April. Tṛtīyā runs from 02:57 on Thu 24 Apr to 04:44 on Fri 25 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-04-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16919, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 }, "end": { "local": "2031-04-26T06:54:53+08:00", "utc": "2031-04-25T22:54:53Z", "ms": 1934924092991.834 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-25T04:43:33+08:00", "utc": "2031-04-24T20:43:33Z", "ms": 1934829812513.6816 }, "end": { "local": "2031-04-26T06:54:53+08:00", "utc": "2031-04-25T22:54:53Z", "ms": 1934924092991.834 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-25", "window": { "start": { "local": "2031-04-25T11:37:02+08:00", "utc": "2031-04-25T03:37:02Z", "ms": 1934854622385.9385 }, "end": { "local": "2031-04-25T12:25:02+08:00", "utc": "2031-04-25T04:25:02Z", "ms": 1934857502385.9385 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-26", "window": { "start": { "local": "2031-04-26T11:36:52+08:00", "utc": "2031-04-26T03:36:52Z", "ms": 1934941012214.267 }, "end": { "local": "2031-04-26T12:24:52+08:00", "utc": "2031-04-26T04:24:52Z", "ms": 1934943892214.267 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:44 on Fri 25 Apr to 06:55 on Sat 26 Apr.", "fact": "2031-04-24T20:43:33Z → 2031-04-25T22:54:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 25th, 11:37–12:25 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16919 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Friday 25 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": "2031-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Friday 25 April. Caturthī runs from 04:44 on Fri 25 Apr to 06:55 on Sat 26 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-04-25", "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/2031/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8067, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-04-26T06:54:53+08:00", "utc": "2031-04-25T22:54:53Z", "ms": 1934924092991.834 }, "end": { "local": "2031-04-27T09:22:16+08:00", "utc": "2031-04-27T01:22:16Z", "ms": 1935019335559.4866 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-26T06:54:53+08:00", "utc": "2031-04-25T22:54:53Z", "ms": 1934924092991.834 }, "end": { "local": "2031-04-27T09:22:16+08:00", "utc": "2031-04-27T01:22:16Z", "ms": 1935019335559.4866 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-26", "window": { "start": { "local": "2031-04-26T11:36:52+08:00", "utc": "2031-04-26T03:36:52Z", "ms": 1934941012214.267 }, "end": { "local": "2031-04-26T12:24:52+08:00", "utc": "2031-04-26T04:24:52Z", "ms": 1934943892214.267 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-27", "window": { "start": { "local": "2031-04-27T11:36:43+08:00", "utc": "2031-04-27T03:36:43Z", "ms": 1935027402515.9983 }, "end": { "local": "2031-04-27T12:24:43+08:00", "utc": "2031-04-27T04:24:43Z", "ms": 1935030282515.9983 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:55 on Sat 26 Apr to 09:22 on Sun 27 Apr.", "fact": "2031-04-25T22:54:53Z → 2031-04-27T01:22:16Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8067 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Fuzhou, 2031: Saturday 26 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": "2031-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Śaṅkara Jayantī 2031 falls on Saturday 26 April. Pañcamī runs from 06:55 on Sat 26 Apr to 09:22 on Sun 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1037, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-04-28T11:53:50+08:00", "utc": "2031-04-28T03:53:50Z", "ms": 1935114829923.334 }, "end": { "local": "2031-04-29T14:16:05+08:00", "utc": "2031-04-29T06:16:05Z", "ms": 1935209764831.7312 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-04-28T11:53:50+08:00", "utc": "2031-04-28T03:53:50Z", "ms": 1935114829923.334 }, "end": { "local": "2031-04-29T14:16:05+08:00", "utc": "2031-04-29T06:16:05Z", "ms": 1935209764831.7312 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-04-28", "window": { "start": { "local": "2031-04-28T11:36:33+08:00", "utc": "2031-04-28T03:36:33Z", "ms": 1935113793299.0261 }, "end": { "local": "2031-04-28T12:24:33+08:00", "utc": "2031-04-28T04:24:33Z", "ms": 1935116673299.0261 } }, "covered_min": 31, "window_min": 48, "qualifies": true }, { "local_date": "2031-04-29", "window": { "start": { "local": "2031-04-29T11:36:25+08:00", "utc": "2031-04-29T03:36:25Z", "ms": 1935200184571.15 }, "end": { "local": "2031-04-29T12:24:25+08:00", "utc": "2031-04-29T04:24:25Z", "ms": 1935203064571.15 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Saptamī runs from 11:54 on Mon 28 Apr to 14:16 on Tue 29 Apr.", "fact": "2031-04-28T03:53:50Z → 2031-04-29T06:16:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 28th, 11:36–12:24 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 31 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1037 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Fuzhou, 2031: Monday 28 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": "2031-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-04-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṅgotpatti (Ganga Saptami) 2031 falls on Monday 28 April. Saptamī runs from 11:54 on Mon 28 Apr to 14:16 on Tue 29 Apr and covers 31 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-05-03", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39560, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-05-02T18:25:34+08:00", "utc": "2031-05-02T10:25:34Z", "ms": 1935483933934.0886 }, "end": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-02T18:25:34+08:00", "utc": "2031-05-02T10:25:34Z", "ms": 1935483933934.0886 }, "end": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-05-03", "window": { "start": { "local": "2031-05-03T05:24:54+08:00", "utc": "2031-05-02T21:24:54Z", "ms": 1935523493786.5757 }, "end": { "local": "2031-05-03T05:24:54+08:00", "utc": "2031-05-02T21:24:54Z", "ms": 1935523493786.5757 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-05-04", "window": { "start": { "local": "2031-05-04T05:24:10+08:00", "utc": "2031-05-03T21:24:10Z", "ms": 1935609849611.6636 }, "end": { "local": "2031-05-04T05:24:10+08:00", "utc": "2031-05-03T21:24:10Z", "ms": 1935609849611.6636 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:26 on Fri 2 May to 18:25 on Sat 3 May.", "fact": "2031-05-02T10:25:34Z → 2031-05-03T10:24:38Z" }, { "step": "kaala", "text": "Sunrise is at 05:25 on the 3rd and 05:24 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 39560 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Fuzhou, 2031: Saturday 3 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Mohinī Ekādaśī 2031 falls on Saturday 3 May. Ekādaśī runs from 18:26 on Fri 2 May to 18:25 on Sat 3 May and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-05-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18909, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 }, "end": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 }, "end": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-03", "window": { "start": { "local": "2031-05-03T11:35:55+08:00", "utc": "2031-05-03T03:35:55Z", "ms": 1935545754703.954 }, "end": { "local": "2031-05-03T12:23:55+08:00", "utc": "2031-05-03T04:23:55Z", "ms": 1935548634703.954 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-04", "window": { "start": { "local": "2031-05-04T11:35:49+08:00", "utc": "2031-05-04T03:35:49Z", "ms": 1935632148536.6797 }, "end": { "local": "2031-05-04T12:23:49+08:00", "utc": "2031-05-04T04:23:49Z", "ms": 1935635028536.6797 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:25 on Sat 3 May to 17:39 on Sun 4 May.", "fact": "2031-05-03T10:24:38Z → 2031-05-04T09:38:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 3rd, 11:36–12:24 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18909 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Fuzhou, 2031: Sunday 4 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Paraśurāma Dvādaśī 2031 falls on Sunday 4 May. Dvādaśī runs from 18:25 on Sat 3 May to 17:39 on Sun 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18909, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 }, "end": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-03T18:24:38+08:00", "utc": "2031-05-03T10:24:38Z", "ms": 1935570277829.8457 }, "end": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-03", "window": { "start": { "local": "2031-05-03T11:35:55+08:00", "utc": "2031-05-03T03:35:55Z", "ms": 1935545754703.954 }, "end": { "local": "2031-05-03T12:23:55+08:00", "utc": "2031-05-03T04:23:55Z", "ms": 1935548634703.954 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-04", "window": { "start": { "local": "2031-05-04T11:35:49+08:00", "utc": "2031-05-04T03:35:49Z", "ms": 1935632148536.6797 }, "end": { "local": "2031-05-04T12:23:49+08:00", "utc": "2031-05-04T04:23:49Z", "ms": 1935635028536.6797 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:25 on Sat 3 May to 17:39 on Sun 4 May.", "fact": "2031-05-03T10:24:38Z → 2031-05-04T09:38:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 3rd, 11:36–12:24 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18909 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Fuzhou, 2031: Sunday 4 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Rukmiṇī Dvādaśī 2031 falls on Sunday 4 May. Dvādaśī runs from 18:25 on Sat 3 May to 17:39 on Sun 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-05-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3390, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 }, "end": { "local": "2031-05-05T16:12:07+08:00", "utc": "2031-05-05T08:12:07Z", "ms": 1935735127466.6187 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-04T17:38:58+08:00", "utc": "2031-05-04T09:38:58Z", "ms": 1935653937512.5916 }, "end": { "local": "2031-05-05T16:12:07+08:00", "utc": "2031-05-05T08:12:07Z", "ms": 1935735127466.6187 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-05-04", "window": { "start": { "local": "2031-05-04T18:35:27+08:00", "utc": "2031-05-04T10:35:27Z", "ms": 1935657327461.6956 }, "end": { "local": "2031-05-04T20:01:51+08:00", "utc": "2031-05-04T12:01:51Z", "ms": 1935662511321.385 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "2031-05-05", "window": { "start": { "local": "2031-05-05T18:35:59+08:00", "utc": "2031-05-05T10:35:59Z", "ms": 1935743759400.8528 }, "end": { "local": "2031-05-05T20:02:13+08:00", "utc": "2031-05-05T12:02:13Z", "ms": 1935748933374.2778 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:39 on Sun 4 May to 16:12 on Mon 5 May.", "fact": "2031-05-04T09:38:58Z → 2031-05-05T08:12:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:35–20:02 on the 4th, 18:36–20:02 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 86 of 86 minutes on the 4th and 0 of 86 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 3390 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Sunday 4 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Sunday 4 May. Trayodaśī runs from 17:39 on Sun 4 May to 16:12 on Mon 5 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8632, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-05-05T16:12:07+08:00", "utc": "2031-05-05T08:12:07Z", "ms": 1935735127466.6187 }, "end": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-05T16:12:07+08:00", "utc": "2031-05-05T08:12:07Z", "ms": 1935735127466.6187 }, "end": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-05-05", "window": { "start": { "local": "2031-05-05T18:35:59+08:00", "utc": "2031-05-05T10:35:59Z", "ms": 1935743759400.8528 }, "end": { "local": "2031-05-05T20:02:13+08:00", "utc": "2031-05-05T12:02:13Z", "ms": 1935748933374.2778 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "2031-05-06", "window": { "start": { "local": "2031-05-06T18:36:31+08:00", "utc": "2031-05-06T10:36:31Z", "ms": 1935830191433.6348 }, "end": { "local": "2031-05-06T20:02:36+08:00", "utc": "2031-05-06T12:02:36Z", "ms": 1935835355643.8562 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:12 on Mon 5 May to 14:10 on Tue 6 May.", "fact": "2031-05-05T08:12:07Z → 2031-05-06T06:10:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:02 on the 5th, 18:37–20:03 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 86 of 86 minutes on the 5th and 0 of 86 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8632 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Fuzhou, 2031: Monday 5 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2031 falls on Monday 5 May. Caturdaśī runs from 16:12 on Mon 5 May to 14:10 on Tue 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-07", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 260, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 }, "end": { "local": "2031-05-07T11:39:54+08:00", "utc": "2031-05-07T03:39:54Z", "ms": 1935891593685.2 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 }, "end": { "local": "2031-05-07T11:39:54+08:00", "utc": "2031-05-07T03:39:54Z", "ms": 1935891593685.2 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-06", "window": { "start": { "local": "2031-05-06T11:35:38+08:00", "utc": "2031-05-06T03:35:38Z", "ms": 1935804937817.588 }, "end": { "local": "2031-05-06T12:23:38+08:00", "utc": "2031-05-06T04:23:38Z", "ms": 1935807817817.588 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-07", "window": { "start": { "local": "2031-05-07T11:35:33+08:00", "utc": "2031-05-07T03:35:33Z", "ms": 1935891333282.5684 }, "end": { "local": "2031-05-07T12:23:33+08:00", "utc": "2031-05-07T04:23:33Z", "ms": 1935894213282.5684 } }, "covered_min": 4, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:10 on Tue 6 May to 11:40 on Wed 7 May.", "fact": "2031-05-06T06:10:00Z → 2031-05-07T03:39:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 6th, 11:36–12:24 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 4 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 260 s < 300 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Fuzhou, 2031: Wednesday 7 May.", "fact": "confidence: boundary (margin)" } ], "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": "2031-05-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Buddha Pūrṇimā 2031 falls on Wednesday 7 May. Pūrṇimā runs from 14:10 on Tue 6 May to 11:40 on Wed 7 May and covers 4 of 48 minutes of madhyāhna that midday. It is 4 min 20 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-07", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 260, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 }, "end": { "local": "2031-05-07T11:39:54+08:00", "utc": "2031-05-07T03:39:54Z", "ms": 1935891593685.2 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-06T14:10:00+08:00", "utc": "2031-05-06T06:10:00Z", "ms": 1935814200049.2144 }, "end": { "local": "2031-05-07T11:39:54+08:00", "utc": "2031-05-07T03:39:54Z", "ms": 1935891593685.2 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-06", "window": { "start": { "local": "2031-05-06T11:35:38+08:00", "utc": "2031-05-06T03:35:38Z", "ms": 1935804937817.588 }, "end": { "local": "2031-05-06T12:23:38+08:00", "utc": "2031-05-06T04:23:38Z", "ms": 1935807817817.588 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-07", "window": { "start": { "local": "2031-05-07T11:35:33+08:00", "utc": "2031-05-07T03:35:33Z", "ms": 1935891333282.5684 }, "end": { "local": "2031-05-07T12:23:33+08:00", "utc": "2031-05-07T04:23:33Z", "ms": 1935894213282.5684 } }, "covered_min": 4, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:10 on Tue 6 May to 11:40 on Wed 7 May.", "fact": "2031-05-06T06:10:00Z → 2031-05-07T03:39:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 6th, 11:36–12:24 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 4 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 260 s < 300 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Fuzhou, 2031: Wednesday 7 May.", "fact": "confidence: boundary (margin)" } ], "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": "2031-05-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Sampat Gaurī Vrata 2031 falls on Wednesday 7 May. Pūrṇimā runs from 14:10 on Tue 6 May to 11:40 on Wed 7 May and covers 4 of 48 minutes of madhyāhna that midday. It is 4 min 20 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-05-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5935, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-05-10T02:42:38+08:00", "utc": "2031-05-09T18:42:38Z", "ms": 1936118558147.2983 }, "end": { "local": "2031-05-10T23:41:06+08:00", "utc": "2031-05-10T15:41:06Z", "ms": 1936194065679.9568 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-10T02:42:38+08:00", "utc": "2031-05-09T18:42:38Z", "ms": 1936118558147.2983 }, "end": { "local": "2031-05-10T23:41:06+08:00", "utc": "2031-05-10T15:41:06Z", "ms": 1936194065679.9568 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-05-09", "window": { "start": { "local": "2031-05-09T21:03:28+08:00", "utc": "2031-05-09T13:03:28Z", "ms": 1936098208365.0427 }, "end": { "local": "2031-05-09T21:03:28+08:00", "utc": "2031-05-09T13:03:28Z", "ms": 1936098208365.0427 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-05-10", "window": { "start": { "local": "2031-05-10T22:02:11+08:00", "utc": "2031-05-10T14:02:11Z", "ms": 1936188131106.503 }, "end": { "local": "2031-05-10T22:02:11+08:00", "utc": "2031-05-10T14:02:11Z", "ms": 1936188131106.503 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:43 on Sat 10 May to 23:41 on Sat 10 May.", "fact": "2031-05-09T18:42:38Z → 2031-05-10T15:41:06Z" }, { "step": "kaala", "text": "Moonrise is at 21:03 on the 9th and 22:02 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5935 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Saturday 10 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Saturday 10 May. Caturthī runs from 02:43 on Sat 10 May to 23:41 on Sat 10 May and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/ekadashi?on=2031-05-17", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23557, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-05-16T12:08:19+08:00", "utc": "2031-05-16T04:08:19Z", "ms": 1936670899300.736 }, "end": { "local": "2031-05-17T11:48:48+08:00", "utc": "2031-05-17T03:48:48Z", "ms": 1936756128311.5474 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-16T12:08:19+08:00", "utc": "2031-05-16T04:08:19Z", "ms": 1936670899300.736 }, "end": { "local": "2031-05-17T11:48:48+08:00", "utc": "2031-05-17T03:48:48Z", "ms": 1936756128311.5474 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-05-16", "window": { "start": { "local": "2031-05-16T05:16:42+08:00", "utc": "2031-05-15T21:16:42Z", "ms": 1936646201535.7993 }, "end": { "local": "2031-05-16T05:16:42+08:00", "utc": "2031-05-15T21:16:42Z", "ms": 1936646201535.7993 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-05-17", "window": { "start": { "local": "2031-05-17T05:16:12+08:00", "utc": "2031-05-16T21:16:12Z", "ms": 1936732571616.3381 }, "end": { "local": "2031-05-17T05:16:12+08:00", "utc": "2031-05-16T21:16:12Z", "ms": 1936732571616.3381 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:08 on Fri 16 May to 11:49 on Sat 17 May.", "fact": "2031-05-16T04:08:19Z → 2031-05-17T03:48:48Z" }, { "step": "kaala", "text": "Sunrise is at 05:17 on the 16th and 05:16 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23557 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Fuzhou, 2031: Saturday 17 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": "2031-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Aparā Ekādaśī 2031 falls on Saturday 17 May. Ekādaśī runs from 12:08 on Fri 16 May to 11:49 on Sat 17 May and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-05-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-05-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21919, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-05-18T11:59:03+08:00", "utc": "2031-05-18T03:59:03Z", "ms": 1936843143074.9607 }, "end": { "local": "2031-05-19T12:38:13+08:00", "utc": "2031-05-19T04:38:13Z", "ms": 1936931893312.139 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-18T11:59:03+08:00", "utc": "2031-05-18T03:59:03Z", "ms": 1936843143074.9607 }, "end": { "local": "2031-05-19T12:38:13+08:00", "utc": "2031-05-19T04:38:13Z", "ms": 1936931893312.139 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-05-18", "window": { "start": { "local": "2031-05-18T18:43:00+08:00", "utc": "2031-05-18T10:43:00Z", "ms": 1936867379967 }, "end": { "local": "2031-05-18T20:07:18+08:00", "utc": "2031-05-18T12:07:18Z", "ms": 1936872438025.7637 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "2031-05-19", "window": { "start": { "local": "2031-05-19T18:43:32+08:00", "utc": "2031-05-19T10:43:32Z", "ms": 1936953812228.8674 }, "end": { "local": "2031-05-19T20:07:42+08:00", "utc": "2031-05-19T12:07:42Z", "ms": 1936958862482.799 } }, "covered_min": 0, "window_min": 84, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:59 on Sun 18 May to 12:38 on Mon 19 May.", "fact": "2031-05-18T03:59:03Z → 2031-05-19T04:38:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:43–20:07 on the 18th, 18:44–20:08 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 84 of 84 minutes on the 18th and 0 of 84 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21919 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Sunday 18 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": "2031-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Sunday 18 May. Trayodaśī runs from 11:59 on Sun 18 May to 12:38 on Mon 19 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-05-18", "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/2031/shivaratri?on=2031-05-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35417, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-05-19T12:38:13+08:00", "utc": "2031-05-19T04:38:13Z", "ms": 1936931893312.139 }, "end": { "local": "2031-05-20T13:44:57+08:00", "utc": "2031-05-20T05:44:57Z", "ms": 1937022296842.947 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-19T12:38:13+08:00", "utc": "2031-05-19T04:38:13Z", "ms": 1936931893312.139 }, "end": { "local": "2031-05-20T13:44:57+08:00", "utc": "2031-05-20T05:44:57Z", "ms": 1937022296842.947 } }, "kaala": "nishita", "days": [ { "local_date": "2031-05-19", "window": { "start": { "local": "2031-05-19T23:35:11+08:00", "utc": "2031-05-19T15:35:11Z", "ms": 1936971310681.111 }, "end": { "local": "2031-05-20T00:23:11+08:00", "utc": "2031-05-19T16:23:11Z", "ms": 1936974190681.111 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-05-20", "window": { "start": { "local": "2031-05-20T23:35:14+08:00", "utc": "2031-05-20T15:35:14Z", "ms": 1937057714229.2378 }, "end": { "local": "2031-05-21T00:23:14+08:00", "utc": "2031-05-20T16:23:14Z", "ms": 1937060594229.2378 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:38 on Mon 19 May to 13:45 on Tue 20 May.", "fact": "2031-05-19T04:38:13Z → 2031-05-20T05:44:57Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:35–00:23 on the 19th, 23:35–00:23 on the 20th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35417 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Monday 19 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": "2031-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Monday 19 May. Caturdaśī runs from 12:38 on Mon 19 May to 13:45 on Tue 20 May and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-05-19", "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/2031/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25314, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-05-23T19:25:33+08:00", "utc": "2031-05-23T11:25:33Z", "ms": 1937301932939.607 }, "end": { "local": "2031-05-24T21:51:28+08:00", "utc": "2031-05-24T13:51:28Z", "ms": 1937397087690.8208 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-23T19:25:33+08:00", "utc": "2031-05-23T11:25:33Z", "ms": 1937301932939.607 }, "end": { "local": "2031-05-24T21:51:28+08:00", "utc": "2031-05-24T13:51:28Z", "ms": 1937397087690.8208 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-23", "window": { "start": { "local": "2031-05-23T11:35:39+08:00", "utc": "2031-05-23T03:35:39Z", "ms": 1937273738755.5083 }, "end": { "local": "2031-05-23T12:23:39+08:00", "utc": "2031-05-23T04:23:39Z", "ms": 1937276618755.5083 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-24", "window": { "start": { "local": "2031-05-24T11:35:44+08:00", "utc": "2031-05-24T03:35:44Z", "ms": 1937360143783.4243 }, "end": { "local": "2031-05-24T12:23:44+08:00", "utc": "2031-05-24T04:23:44Z", "ms": 1937363023783.4243 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:26 on Fri 23 May to 21:51 on Sat 24 May.", "fact": "2031-05-23T11:25:33Z → 2031-05-24T13:51:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 23rd, 11:36–12:24 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25314 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Fuzhou, 2031: Saturday 24 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Rambhā Tṛtīyā 2031 falls on Saturday 24 May. Tṛtīyā runs from 19:26 on Fri 23 May to 21:51 on Sat 24 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-05-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34064, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-05-24T21:51:28+08:00", "utc": "2031-05-24T13:51:28Z", "ms": 1937397087690.8208 }, "end": { "local": "2031-05-26T00:22:03+08:00", "utc": "2031-05-25T16:22:03Z", "ms": 1937492522669.3562 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-24T21:51:28+08:00", "utc": "2031-05-24T13:51:28Z", "ms": 1937397087690.8208 }, "end": { "local": "2031-05-26T00:22:03+08:00", "utc": "2031-05-25T16:22:03Z", "ms": 1937492522669.3562 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-24", "window": { "start": { "local": "2031-05-24T11:35:44+08:00", "utc": "2031-05-24T03:35:44Z", "ms": 1937360143783.4243 }, "end": { "local": "2031-05-24T12:23:44+08:00", "utc": "2031-05-24T04:23:44Z", "ms": 1937363023783.4243 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-05-25", "window": { "start": { "local": "2031-05-25T11:35:49+08:00", "utc": "2031-05-25T03:35:49Z", "ms": 1937446549303.436 }, "end": { "local": "2031-05-25T12:23:49+08:00", "utc": "2031-05-25T04:23:49Z", "ms": 1937449429303.436 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:51 on Sat 24 May to 00:22 on Mon 26 May.", "fact": "2031-05-24T13:51:28Z → 2031-05-25T16:22:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 24th, 11:36–12:24 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34064 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Sunday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Sunday 25 May. Caturthī runs from 21:51 on Sat 24 May to 00:22 on Mon 26 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-05-25", "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/2031/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23917, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-05-27T02:47:39+08:00", "utc": "2031-05-26T18:47:39Z", "ms": 1937587659226.9238 }, "end": { "local": "2031-05-28T04:57:31+08:00", "utc": "2031-05-27T20:57:31Z", "ms": 1937681851347.5813 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-27T02:47:39+08:00", "utc": "2031-05-26T18:47:39Z", "ms": 1937587659226.9238 }, "end": { "local": "2031-05-28T04:57:31+08:00", "utc": "2031-05-27T20:57:31Z", "ms": 1937681851347.5813 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-27", "window": { "start": { "local": "2031-05-27T11:36:02+08:00", "utc": "2031-05-27T03:36:02Z", "ms": 1937619361765.435 }, "end": { "local": "2031-05-27T12:24:02+08:00", "utc": "2031-05-27T04:24:02Z", "ms": 1937622241765.435 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-05-28", "window": { "start": { "local": "2031-05-28T11:36:09+08:00", "utc": "2031-05-28T03:36:09Z", "ms": 1937705768679.391 }, "end": { "local": "2031-05-28T12:24:09+08:00", "utc": "2031-05-28T04:24:09Z", "ms": 1937708648679.391 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:48 on Tue 27 May to 04:58 on Wed 28 May.", "fact": "2031-05-26T18:47:39Z → 2031-05-27T20:57:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 27th, 11:36–12:24 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23917 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Fuzhou, 2031: Tuesday 27 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Araṇya Gaurī Vrata 2031 falls on Tuesday 27 May. Ṣaṣṭhī runs from 02:48 on Tue 27 May to 04:58 on Wed 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-05-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23917, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-05-27T02:47:39+08:00", "utc": "2031-05-26T18:47:39Z", "ms": 1937587659226.9238 }, "end": { "local": "2031-05-28T04:57:31+08:00", "utc": "2031-05-27T20:57:31Z", "ms": 1937681851347.5813 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-05-27T02:47:39+08:00", "utc": "2031-05-26T18:47:39Z", "ms": 1937587659226.9238 }, "end": { "local": "2031-05-28T04:57:31+08:00", "utc": "2031-05-27T20:57:31Z", "ms": 1937681851347.5813 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-05-27", "window": { "start": { "local": "2031-05-27T11:36:02+08:00", "utc": "2031-05-27T03:36:02Z", "ms": 1937619361765.435 }, "end": { "local": "2031-05-27T12:24:02+08:00", "utc": "2031-05-27T04:24:02Z", "ms": 1937622241765.435 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-05-28", "window": { "start": { "local": "2031-05-28T11:36:09+08:00", "utc": "2031-05-28T03:36:09Z", "ms": 1937705768679.391 }, "end": { "local": "2031-05-28T12:24:09+08:00", "utc": "2031-05-28T04:24:09Z", "ms": 1937708648679.391 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:48 on Tue 27 May to 04:58 on Wed 28 May.", "fact": "2031-05-26T18:47:39Z → 2031-05-27T20:57:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 27th, 11:36–12:24 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23917 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Fuzhou, 2031: Tuesday 27 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-05-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-05-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2031 falls on Tuesday 27 May. Ṣaṣṭhī runs from 02:48 on Tue 27 May to 04:58 on Wed 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-06-02", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5529, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-06-01T07:51:21+08:00", "utc": "2031-05-31T23:51:21Z", "ms": 1938037880907.907 }, "end": { "local": "2031-06-02T06:43:10+08:00", "utc": "2031-06-01T22:43:10Z", "ms": 1938120189677.7988 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-01T07:51:21+08:00", "utc": "2031-05-31T23:51:21Z", "ms": 1938037880907.907 }, "end": { "local": "2031-06-02T06:43:10+08:00", "utc": "2031-06-01T22:43:10Z", "ms": 1938120189677.7988 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-06-01", "window": { "start": { "local": "2031-06-01T05:11:10+08:00", "utc": "2031-05-31T21:11:10Z", "ms": 1938028270473.661 }, "end": { "local": "2031-06-01T05:11:10+08:00", "utc": "2031-05-31T21:11:10Z", "ms": 1938028270473.661 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-06-02", "window": { "start": { "local": "2031-06-02T05:11:00+08:00", "utc": "2031-06-01T21:11:00Z", "ms": 1938114660339.0432 }, "end": { "local": "2031-06-02T05:11:00+08:00", "utc": "2031-06-01T21:11:00Z", "ms": 1938114660339.0432 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:51 on Sun 1 Jun to 06:43 on Mon 2 Jun.", "fact": "2031-05-31T23:51:21Z → 2031-06-01T22:43:10Z" }, { "step": "kaala", "text": "Sunrise is at 05:11 on the 1st and 05:11 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5529 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Fuzhou, 2031: Monday 2 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": "2031-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Nirjalā Ekādaśī 2031 falls on Monday 2 June. Ekādaśī runs from 07:51 on Sun 1 Jun to 06:43 on Mon 2 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-06-02", "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/2031/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17620, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-06-02T06:43:10+08:00", "utc": "2031-06-01T22:43:10Z", "ms": 1938120189677.7988 }, "end": { "local": "2031-06-03T04:51:26+08:00", "utc": "2031-06-02T20:51:26Z", "ms": 1938199886093.8013 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-02T06:43:10+08:00", "utc": "2031-06-01T22:43:10Z", "ms": 1938120189677.7988 }, "end": { "local": "2031-06-03T04:51:26+08:00", "utc": "2031-06-02T20:51:26Z", "ms": 1938199886093.8013 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-06-02", "window": { "start": { "local": "2031-06-02T11:36:49+08:00", "utc": "2031-06-02T03:36:49Z", "ms": 1938137809498.7478 }, "end": { "local": "2031-06-02T12:24:49+08:00", "utc": "2031-06-02T04:24:49Z", "ms": 1938140689498.7478 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-06-03", "window": { "start": { "local": "2031-06-03T11:36:59+08:00", "utc": "2031-06-03T03:36:59Z", "ms": 1938224218811.2483 }, "end": { "local": "2031-06-03T12:24:59+08:00", "utc": "2031-06-03T04:24:59Z", "ms": 1938227098811.2483 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:43 on Mon 2 Jun to 04:51 on Tue 3 Jun.", "fact": "2031-06-01T22:43:10Z → 2031-06-02T20:51:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 2nd, 11:37–12:25 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17620 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Fuzhou, 2031: Monday 2 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Śrī Rāma Dvādaśī 2031 falls on Monday 2 June. Dvādaśī runs from 06:43 on Mon 2 Jun to 04:51 on Tue 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-06-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22076, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-06-03T04:51:26+08:00", "utc": "2031-06-02T20:51:26Z", "ms": 1938199886093.8013 }, "end": { "local": "2031-06-04T02:21:40+08:00", "utc": "2031-06-03T18:21:40Z", "ms": 1938277299520.3008 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-03T04:51:26+08:00", "utc": "2031-06-02T20:51:26Z", "ms": 1938199886093.8013 }, "end": { "local": "2031-06-04T02:21:40+08:00", "utc": "2031-06-03T18:21:40Z", "ms": 1938277299520.3008 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-06-02", "window": { "start": { "local": "2031-06-02T18:50:39+08:00", "utc": "2031-06-02T10:50:39Z", "ms": 1938163838658.4524 }, "end": { "local": "2031-06-02T20:13:20+08:00", "utc": "2031-06-02T12:13:20Z", "ms": 1938168800363.2854 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "2031-06-03", "window": { "start": { "local": "2031-06-03T18:51:06+08:00", "utc": "2031-06-03T10:51:06Z", "ms": 1938250266177.797 }, "end": { "local": "2031-06-03T20:13:43+08:00", "utc": "2031-06-03T12:13:43Z", "ms": 1938255223192.5732 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:51 on Tue 3 Jun to 02:22 on Wed 4 Jun.", "fact": "2031-06-02T20:51:26Z → 2031-06-03T18:21:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:13 on the 2nd, 18:51–20:14 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 83 minutes on the 2nd and 83 of 83 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22076 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Tuesday 3 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Tuesday 3 June. Trayodaśī runs from 04:51 on Tue 3 Jun to 02:22 on Wed 4 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 955, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-06-04T23:21:10+08:00", "utc": "2031-06-04T15:21:10Z", "ms": 1938352870345.0999 }, "end": { "local": "2031-06-05T19:58:33+08:00", "utc": "2031-06-05T11:58:33Z", "ms": 1938427113182.517 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-04T23:21:10+08:00", "utc": "2031-06-04T15:21:10Z", "ms": 1938352870345.0999 }, "end": { "local": "2031-06-05T19:58:33+08:00", "utc": "2031-06-05T11:58:33Z", "ms": 1938427113182.517 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-06-04", "window": { "start": { "local": "2031-06-04T18:51:33+08:00", "utc": "2031-06-04T10:51:33Z", "ms": 1938336693159.717 }, "end": { "local": "2031-06-04T20:14:06+08:00", "utc": "2031-06-04T12:14:06Z", "ms": 1938341645720.914 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "2031-06-05", "window": { "start": { "local": "2031-06-05T18:52:00+08:00", "utc": "2031-06-05T10:52:00Z", "ms": 1938423119579.9087 }, "end": { "local": "2031-06-05T20:14:28+08:00", "utc": "2031-06-05T12:14:28Z", "ms": 1938428067926.9421 } }, "covered_min": 67, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:21 on Wed 4 Jun to 19:59 on Thu 5 Jun.", "fact": "2031-06-04T15:21:10Z → 2031-06-05T11:58:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:14 on the 4th, 18:52–20:14 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 83 minutes on the 4th and 67 of 82 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 955 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Fuzhou, 2031: Thursday 5 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Vaṭa Sāvitrī Vrata 2031 falls on Thursday 5 June. Pūrṇimā runs from 23:21 on Wed 4 Jun to 19:59 on Thu 5 Jun and covers 67 of 82 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-06-08", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29923, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-06-08T09:12:14+08:00", "utc": "2031-06-08T01:12:14Z", "ms": 1938647534208.5244 }, "end": { "local": "2031-06-09T05:55:38+08:00", "utc": "2031-06-08T21:55:38Z", "ms": 1938722138205.527 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-08T09:12:14+08:00", "utc": "2031-06-08T01:12:14Z", "ms": 1938647534208.5244 }, "end": { "local": "2031-06-09T05:55:38+08:00", "utc": "2031-06-08T21:55:38Z", "ms": 1938722138205.527 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-06-07", "window": { "start": { "local": "2031-06-07T20:45:00+08:00", "utc": "2031-06-07T12:45:00Z", "ms": 1938602699735.1978 }, "end": { "local": "2031-06-07T20:45:00+08:00", "utc": "2031-06-07T12:45:00Z", "ms": 1938602699735.1978 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-06-08", "window": { "start": { "local": "2031-06-08T21:36:55+08:00", "utc": "2031-06-08T13:36:55Z", "ms": 1938692215022.5955 }, "end": { "local": "2031-06-08T21:36:55+08:00", "utc": "2031-06-08T13:36:55Z", "ms": 1938692215022.5955 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:12 on Sun 8 Jun to 05:56 on Mon 9 Jun.", "fact": "2031-06-08T01:12:14Z → 2031-06-08T21:55:38Z" }, { "step": "kaala", "text": "Moonrise is at 20:45 on the 7th and 21:37 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29923 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Sunday 8 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": "2031-06-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Sunday 8 June. Caturthī runs from 09:12 on Sun 8 Jun to 05:56 on Mon 9 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-06-08", "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/2031/ekadashi?on=2031-06-15", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23314, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-06-14T21:48:42+08:00", "utc": "2031-06-14T13:48:42Z", "ms": 1939211322497.2388 }, "end": { "local": "2031-06-15T22:42:13+08:00", "utc": "2031-06-15T14:42:13Z", "ms": 1939300932798.0195 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-14T21:48:42+08:00", "utc": "2031-06-14T13:48:42Z", "ms": 1939211322497.2388 }, "end": { "local": "2031-06-15T22:42:13+08:00", "utc": "2031-06-15T14:42:13Z", "ms": 1939300932798.0195 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-06-15", "window": { "start": { "local": "2031-06-15T05:10:40+08:00", "utc": "2031-06-14T21:10:40Z", "ms": 1939237840109.9324 }, "end": { "local": "2031-06-15T05:10:40+08:00", "utc": "2031-06-14T21:10:40Z", "ms": 1939237840109.9324 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-06-16", "window": { "start": { "local": "2031-06-16T05:10:47+08:00", "utc": "2031-06-15T21:10:47Z", "ms": 1939324246843.8284 }, "end": { "local": "2031-06-16T05:10:47+08:00", "utc": "2031-06-15T21:10:47Z", "ms": 1939324246843.8284 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:49 on Sat 14 Jun to 22:42 on Sun 15 Jun.", "fact": "2031-06-14T13:48:42Z → 2031-06-15T14:42:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:11 on the 15th and 05:11 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23314 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Fuzhou, 2031: Sunday 15 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": "2031-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Yoginī Ekādaśī 2031 falls on Sunday 15 June. Ekādaśī runs from 21:49 on Sat 14 Jun to 22:42 on Sun 15 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-06-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-06-17", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13715, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-06-17T00:06:40+08:00", "utc": "2031-06-16T16:06:40Z", "ms": 1939392399581.8806 }, "end": { "local": "2031-06-18T01:56:00+08:00", "utc": "2031-06-17T17:56:00Z", "ms": 1939485359639.8706 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-17T00:06:40+08:00", "utc": "2031-06-16T16:06:40Z", "ms": 1939392399581.8806 }, "end": { "local": "2031-06-18T01:56:00+08:00", "utc": "2031-06-17T17:56:00Z", "ms": 1939485359639.8706 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-06-16", "window": { "start": { "local": "2031-06-16T18:56:06+08:00", "utc": "2031-06-16T10:56:06Z", "ms": 1939373765829.03 }, "end": { "local": "2031-06-16T20:18:04+08:00", "utc": "2031-06-16T12:18:04Z", "ms": 1939378684342.7798 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2031-06-17", "window": { "start": { "local": "2031-06-17T18:56:23+08:00", "utc": "2031-06-17T10:56:23Z", "ms": 1939460183453.1587 }, "end": { "local": "2031-06-17T20:18:21+08:00", "utc": "2031-06-17T12:18:21Z", "ms": 1939465100806.2659 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:07 on Tue 17 Jun to 01:56 on Wed 18 Jun.", "fact": "2031-06-16T16:06:40Z → 2031-06-17T17:56:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:56–20:18 on the 16th, 18:56–20:18 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 16th and 82 of 82 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13715 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Tuesday 17 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": "2031-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Tuesday 17 June. Trayodaśī runs from 00:07 on Tue 17 Jun to 01:56 on Wed 18 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-06-17", "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/2031/shivaratri?on=2031-06-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5296, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-06-18T01:56:00+08:00", "utc": "2031-06-17T17:56:00Z", "ms": 1939485359639.8706 }, "end": { "local": "2031-06-19T04:04:00+08:00", "utc": "2031-06-18T20:04:00Z", "ms": 1939579440417.9128 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-18T01:56:00+08:00", "utc": "2031-06-17T17:56:00Z", "ms": 1939485359639.8706 }, "end": { "local": "2031-06-19T04:04:00+08:00", "utc": "2031-06-18T20:04:00Z", "ms": 1939579440417.9128 } }, "kaala": "nishita", "days": [ { "local_date": "2031-06-17", "window": { "start": { "local": "2031-06-17T23:39:44+08:00", "utc": "2031-06-17T15:39:44Z", "ms": 1939477183527.3105 }, "end": { "local": "2031-06-18T00:27:44+08:00", "utc": "2031-06-17T16:27:44Z", "ms": 1939480063527.3105 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-06-18", "window": { "start": { "local": "2031-06-18T23:39:57+08:00", "utc": "2031-06-18T15:39:57Z", "ms": 1939563596866.4602 }, "end": { "local": "2031-06-19T00:27:57+08:00", "utc": "2031-06-18T16:27:57Z", "ms": 1939566476866.4602 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:56 on Wed 18 Jun to 04:04 on Thu 19 Jun.", "fact": "2031-06-17T17:56:00Z → 2031-06-18T20:04:00Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 17th, 23:40–00:28 on the 18th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5296 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Wednesday 18 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": "2031-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Wednesday 18 June. Caturdaśī runs from 01:56 on Wed 18 Jun to 04:04 on Thu 19 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1163, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2031-06-21T08:52:24+08:00", "utc": "2031-06-21T00:52:24Z", "ms": 1939769544434.4106 }, "end": { "local": "2031-06-22T11:21:21+08:00", "utc": "2031-06-22T03:21:21Z", "ms": 1939864880865.1501 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-21T08:52:24+08:00", "utc": "2031-06-21T00:52:24Z", "ms": 1939769544434.4106 }, "end": { "local": "2031-06-22T11:21:21+08:00", "utc": "2031-06-22T03:21:21Z", "ms": 1939864880865.1501 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-06-21", "window": { "start": { "local": "2031-06-21T11:40:31+08:00", "utc": "2031-06-21T03:40:31Z", "ms": 1939779630519.1729 }, "end": { "local": "2031-06-21T12:28:31+08:00", "utc": "2031-06-21T04:28:31Z", "ms": 1939782510519.1729 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-06-22", "window": { "start": { "local": "2031-06-22T11:40:43+08:00", "utc": "2031-06-22T03:40:43Z", "ms": 1939866043378.3257 }, "end": { "local": "2031-06-22T12:28:43+08:00", "utc": "2031-06-22T04:28:43Z", "ms": 1939868923378.3257 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 08:52 on Sat 21 Jun to 11:21 on Sun 22 Jun.", "fact": "2031-06-21T00:52:24Z → 2031-06-22T03:21:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 21st, 11:41–12:29 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1163 s" }, { "step": "ruling", "text": "Rathayātrā, Fuzhou, 2031: Saturday 21 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Rathayātrā 2031 falls on Saturday 21 June. Dvitīyā runs from 08:52 on Sat 21 Jun to 11:21 on Sun 22 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-06-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4589, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-06-23T13:45:25+08:00", "utc": "2031-06-23T05:45:25Z", "ms": 1939959924838.016 }, "end": { "local": "2031-06-24T15:57:46+08:00", "utc": "2031-06-24T07:57:46Z", "ms": 1940054266462.4082 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-23T13:45:25+08:00", "utc": "2031-06-23T05:45:25Z", "ms": 1939959924838.016 }, "end": { "local": "2031-06-24T15:57:46+08:00", "utc": "2031-06-24T07:57:46Z", "ms": 1940054266462.4082 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-06-23", "window": { "start": { "local": "2031-06-23T11:40:56+08:00", "utc": "2031-06-23T03:40:56Z", "ms": 1939952456181.9854 }, "end": { "local": "2031-06-23T12:28:56+08:00", "utc": "2031-06-23T04:28:56Z", "ms": 1939955336181.9854 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-06-24", "window": { "start": { "local": "2031-06-24T11:41:09+08:00", "utc": "2031-06-24T03:41:09Z", "ms": 1940038868903.581 }, "end": { "local": "2031-06-24T12:29:09+08:00", "utc": "2031-06-24T04:29:09Z", "ms": 1940041748903.581 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:45 on Mon 23 Jun to 15:58 on Tue 24 Jun.", "fact": "2031-06-23T05:45:25Z → 2031-06-24T07:57:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 23rd, 11:41–12:29 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4589 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Tuesday 24 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Tuesday 24 June. Caturthī runs from 13:45 on Mon 23 Jun to 15:58 on Tue 24 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12518, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-06-24T15:57:46+08:00", "utc": "2031-06-24T07:57:46Z", "ms": 1940054266462.4082 }, "end": { "local": "2031-06-25T17:50:53+08:00", "utc": "2031-06-25T09:50:53Z", "ms": 1940147452715.4058 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-24T15:57:46+08:00", "utc": "2031-06-24T07:57:46Z", "ms": 1940054266462.4082 }, "end": { "local": "2031-06-25T17:50:53+08:00", "utc": "2031-06-25T09:50:53Z", "ms": 1940147452715.4058 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-06-24", "window": { "start": { "local": "2031-06-24T11:41:09+08:00", "utc": "2031-06-24T03:41:09Z", "ms": 1940038868903.581 }, "end": { "local": "2031-06-24T12:29:09+08:00", "utc": "2031-06-24T04:29:09Z", "ms": 1940041748903.581 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-06-25", "window": { "start": { "local": "2031-06-25T11:41:22+08:00", "utc": "2031-06-25T03:41:22Z", "ms": 1940125281516.973 }, "end": { "local": "2031-06-25T12:29:22+08:00", "utc": "2031-06-25T04:29:22Z", "ms": 1940128161516.973 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 15:58 on Tue 24 Jun to 17:51 on Wed 25 Jun.", "fact": "2031-06-24T07:57:46Z → 2031-06-25T09:50:53Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12518 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Fuzhou, 2031: Wednesday 25 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Pañcamī 2031 falls on Wednesday 25 June. Pañcamī runs from 15:58 on Tue 24 Jun to 17:51 on Wed 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24437, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-06-26T19:16:51+08:00", "utc": "2031-06-26T11:16:51Z", "ms": 1940239011111.0398 }, "end": { "local": "2031-06-27T20:08:16+08:00", "utc": "2031-06-27T12:08:16Z", "ms": 1940328495749.2559 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-26T19:16:51+08:00", "utc": "2031-06-26T11:16:51Z", "ms": 1940239011111.0398 }, "end": { "local": "2031-06-27T20:08:16+08:00", "utc": "2031-06-27T12:08:16Z", "ms": 1940328495749.2559 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-06-26", "window": { "start": { "local": "2031-06-26T11:41:34+08:00", "utc": "2031-06-26T03:41:34Z", "ms": 1940211693996.5642 }, "end": { "local": "2031-06-26T12:29:34+08:00", "utc": "2031-06-26T04:29:34Z", "ms": 1940214573996.5642 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-06-27", "window": { "start": { "local": "2031-06-27T11:41:46+08:00", "utc": "2031-06-27T03:41:46Z", "ms": 1940298106317.4094 }, "end": { "local": "2031-06-27T12:29:46+08:00", "utc": "2031-06-27T04:29:46Z", "ms": 1940300986317.4094 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:17 on Thu 26 Jun to 20:08 on Fri 27 Jun.", "fact": "2031-06-26T11:16:51Z → 2031-06-27T12:08:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 26th, 11:42–12:30 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24437 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Fuzhou, 2031: Friday 27 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-06-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Vivasvat Saptamī 2031 falls on Friday 27 June. Saptamī runs from 19:17 on Thu 26 Jun to 20:08 on Fri 27 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-07-01", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38875, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-06-30T18:26:31+08:00", "utc": "2031-06-30T10:26:31Z", "ms": 1940581590879.4146 }, "end": { "local": "2031-07-01T16:24:03+08:00", "utc": "2031-07-01T08:24:03Z", "ms": 1940660643424.8557 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-06-30T18:26:31+08:00", "utc": "2031-06-30T10:26:31Z", "ms": 1940581590879.4146 }, "end": { "local": "2031-07-01T16:24:03+08:00", "utc": "2031-07-01T08:24:03Z", "ms": 1940660643424.8557 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-07-01", "window": { "start": { "local": "2031-07-01T05:14:26+08:00", "utc": "2031-06-30T21:14:26Z", "ms": 1940620465860.186 }, "end": { "local": "2031-07-01T05:14:26+08:00", "utc": "2031-06-30T21:14:26Z", "ms": 1940620465860.186 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-07-02", "window": { "start": { "local": "2031-07-02T05:14:47+08:00", "utc": "2031-07-01T21:14:47Z", "ms": 1940706887077.1306 }, "end": { "local": "2031-07-02T05:14:47+08:00", "utc": "2031-07-01T21:14:47Z", "ms": 1940706887077.1306 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:27 on Mon 30 Jun to 16:24 on Tue 1 Jul.", "fact": "2031-06-30T10:26:31Z → 2031-07-01T08:24:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:14 on the 1st and 05:15 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38875 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Fuzhou, 2031: Tuesday 1 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-01", "confidence": "determinate" } ], "quote": "In Fuzhou, Hariśayanī Ekādaśī 2031 falls on Tuesday 1 July. Ekādaśī runs from 18:27 on Mon 30 Jun to 16:24 on Tue 1 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-07-01", "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/2031/pradosha-vrata?on=2031-07-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18960, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-07-02T13:42:42+08:00", "utc": "2031-07-02T05:42:42Z", "ms": 1940737362178.9194 }, "end": { "local": "2031-07-03T10:29:16+08:00", "utc": "2031-07-03T02:29:16Z", "ms": 1940812155895.092 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-07-02T13:42:42+08:00", "utc": "2031-07-02T05:42:42Z", "ms": 1940737362178.9194 }, "end": { "local": "2031-07-03T10:29:16+08:00", "utc": "2031-07-03T02:29:16Z", "ms": 1940812155895.092 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-07-02", "window": { "start": { "local": "2031-07-02T18:58:42+08:00", "utc": "2031-07-02T10:58:42Z", "ms": 1940756322386.111 }, "end": { "local": "2031-07-02T20:20:54+08:00", "utc": "2031-07-02T12:20:54Z", "ms": 1940761253929.8384 } }, "covered_min": 82, "window_min": 82, "qualifies": true }, { "local_date": "2031-07-03", "window": { "start": { "local": "2031-07-03T18:58:42+08:00", "utc": "2031-07-03T10:58:42Z", "ms": 1940842722299.7563 }, "end": { "local": "2031-07-03T20:20:57+08:00", "utc": "2031-07-03T12:20:57Z", "ms": 1940847656859.244 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:43 on Wed 2 Jul to 10:29 on Thu 3 Jul.", "fact": "2031-07-02T05:42:42Z → 2031-07-03T02:29:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:59–20:21 on the 2nd, 18:59–20:21 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 82 of 82 minutes on the 2nd and 0 of 82 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18960 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Wednesday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Wednesday 2 July. Trayodaśī runs from 13:43 on Wed 2 Jul to 10:29 on Thu 3 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-04", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4074, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 } }, "kaala": "udaya-3", "days": [ { "local_date": "2031-07-04", "window": { "start": { "local": "2031-07-04T05:15:31+08:00", "utc": "2031-07-03T21:15:31Z", "ms": 1940879731495.9138 }, "end": { "local": "2031-07-04T08:00:09+08:00", "utc": "2031-07-04T00:00:09Z", "ms": 1940889609389.5354 } }, "covered_min": 68, "window_min": 165, "qualifies": false }, { "local_date": "2031-07-05", "window": { "start": { "local": "2031-07-05T05:15:55+08:00", "utc": "2031-07-04T21:15:55Z", "ms": 1940966154648.6392 }, "end": { "local": "2031-07-05T08:00:27+08:00", "utc": "2031-07-05T00:00:27Z", "ms": 1940976027393.4075 } }, "covered_min": 0, "window_min": 165, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul.", "fact": "2031-07-03T22:52:15Z → 2031-07-04T19:01:23Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:16–08:00 on the 4th, 05:16–08:00 on the 5th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 68 of 165 minutes on the 4th and 0 of 165 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 4074 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Fuzhou, 2031: Friday 4 July.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2031-07-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-04", "confidence": "boundary" } ], "quote": "In Fuzhou, Vyāsa Pūjā 2031 falls on Friday 4 July. Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17451, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-07-04", "window": { "start": { "local": "2031-07-04T11:43:06+08:00", "utc": "2031-07-04T03:43:06Z", "ms": 1940902986229.9678 }, "end": { "local": "2031-07-04T12:31:06+08:00", "utc": "2031-07-04T04:31:06Z", "ms": 1940905866229.9678 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-07-05", "window": { "start": { "local": "2031-07-05T11:43:17+08:00", "utc": "2031-07-05T03:43:17Z", "ms": 1940989396510.5598 }, "end": { "local": "2031-07-05T12:31:17+08:00", "utc": "2031-07-05T04:31:17Z", "ms": 1940992276510.5598 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul.", "fact": "2031-07-03T22:52:15Z → 2031-07-04T19:01:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 4th, 11:43–12:31 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17451 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Fuzhou, 2031: Friday 4 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": "2031-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Guru Pūrṇimā 2031 falls on Friday 4 July. Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28962, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 } }, "kaala": "sayahna", "days": [ { "local_date": "2031-07-03", "window": { "start": { "local": "2031-07-03T16:14:00+08:00", "utc": "2031-07-03T08:14:00Z", "ms": 1940832839632.6184 }, "end": { "local": "2031-07-03T18:58:42+08:00", "utc": "2031-07-03T10:58:42Z", "ms": 1940842722299.7563 } }, "covered_min": 0, "window_min": 165, "qualifies": false }, { "local_date": "2031-07-04", "window": { "start": { "local": "2031-07-04T16:14:03+08:00", "utc": "2031-07-04T08:14:03Z", "ms": 1940919243070.4004 }, "end": { "local": "2031-07-04T18:58:41+08:00", "utc": "2031-07-04T10:58:41Z", "ms": 1940929120964.022 } }, "covered_min": 165, "window_min": 165, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul.", "fact": "2031-07-03T22:52:15Z → 2031-07-04T19:01:23Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:14–18:59 on the 3rd, 16:14–18:59 on the 4th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 165 minutes on the 3rd and 165 of 165 on the 4th.", "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 28962 s" }, { "step": "ruling", "text": "Kokilā Vrata, Fuzhou, 2031: Friday 4 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kokila-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Kokilā Vrata 2031 falls on Friday 4 July. Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24024, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2031-07-04T06:52:15+08:00", "utc": "2031-07-03T22:52:15Z", "ms": 1940885535331.1309 }, "end": { "local": "2031-07-05T03:01:23+08:00", "utc": "2031-07-04T19:01:23Z", "ms": 1940958082948.94 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-07-03", "window": { "start": { "local": "2031-07-03T18:58:42+08:00", "utc": "2031-07-03T10:58:42Z", "ms": 1940842722299.7563 }, "end": { "local": "2031-07-03T20:20:57+08:00", "utc": "2031-07-03T12:20:57Z", "ms": 1940847656859.244 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2031-07-04", "window": { "start": { "local": "2031-07-04T18:58:41+08:00", "utc": "2031-07-04T10:58:41Z", "ms": 1940929120964.022 }, "end": { "local": "2031-07-04T20:20:59+08:00", "utc": "2031-07-04T12:20:59Z", "ms": 1940934058788.6377 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul.", "fact": "2031-07-03T22:52:15Z → 2031-07-04T19:01:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:59–20:21 on the 3rd, 18:59–20:21 on the 4th.", "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 3rd and 82 of 82 on the 4th.", "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 24024 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Fuzhou, 2031: Friday 4 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shiva-shayanotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Śiva Śayanotsava 2031 falls on Friday 4 July. Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-05", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3242, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2031-07-05T23:07:06+08:00", "utc": "2031-07-05T15:07:06Z", "ms": 1941030425930.0022 }, "end": { "local": "2031-07-06T19:20:12+08:00", "utc": "2031-07-06T11:20:12Z", "ms": 1941103211516.233 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-05T23:07:06+08:00", "utc": "2031-07-05T15:07:06Z", "ms": 1941030425930.0022 }, "end": { "local": "2031-07-06T19:20:12+08:00", "utc": "2031-07-06T11:20:12Z", "ms": 1941103211516.233 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-07-05", "window": { "start": { "local": "2031-07-05T19:23:38+08:00", "utc": "2031-07-05T11:23:38Z", "ms": 1941017017568.285 }, "end": { "local": "2031-07-05T19:23:38+08:00", "utc": "2031-07-05T11:23:38Z", "ms": 1941017017568.285 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-07-06", "window": { "start": { "local": "2031-07-06T20:14:13+08:00", "utc": "2031-07-06T12:14:13Z", "ms": 1941106453271.969 }, "end": { "local": "2031-07-06T20:14:13+08:00", "utc": "2031-07-06T12:14:13Z", "ms": 1941106453271.969 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 23:07 on Sat 5 Jul to 19:20 on Sun 6 Jul.", "fact": "2031-07-05T15:07:06Z → 2031-07-06T11:20:12Z" }, { "step": "kaala", "text": "Moonrise is at 19:24 on the 5th and 20:14 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 3242 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Fuzhou, 2031: Saturday 5 July.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2031-07-05", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-05", "confidence": "boundary" } ], "quote": "In Fuzhou, Aśūnya Śayana Vrata (Āṣāḍha) 2031 falls on Saturday 5 July. Dvitīyā runs from 23:07 on Sat 5 Jul to 19:20 on Sun 6 Jul, and is current at moonrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-07-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18515, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-07-07T15:51:22+08:00", "utc": "2031-07-07T07:51:22Z", "ms": 1941177081742.7827 }, "end": { "local": "2031-07-08T12:50:44+08:00", "utc": "2031-07-08T04:50:44Z", "ms": 1941252643889.5295 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-07T15:51:22+08:00", "utc": "2031-07-07T07:51:22Z", "ms": 1941177081742.7827 }, "end": { "local": "2031-07-08T12:50:44+08:00", "utc": "2031-07-08T04:50:44Z", "ms": 1941252643889.5295 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-07-07", "window": { "start": { "local": "2031-07-07T20:59:57+08:00", "utc": "2031-07-07T12:59:57Z", "ms": 1941195597113.6316 }, "end": { "local": "2031-07-07T20:59:57+08:00", "utc": "2031-07-07T12:59:57Z", "ms": 1941195597113.6316 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-07-08", "window": { "start": { "local": "2031-07-08T21:41:58+08:00", "utc": "2031-07-08T13:41:58Z", "ms": 1941284518428.9548 }, "end": { "local": "2031-07-08T21:41:58+08:00", "utc": "2031-07-08T13:41:58Z", "ms": 1941284518428.9548 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:51 on Mon 7 Jul to 12:51 on Tue 8 Jul.", "fact": "2031-07-07T07:51:22Z → 2031-07-08T04:50:44Z" }, { "step": "kaala", "text": "Moonrise is at 21:00 on the 7th and 21:42 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18515 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Monday 7 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": "2031-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Monday 7 July. Caturthī runs from 15:51 on Mon 7 Jul to 12:51 on Tue 8 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-07-07", "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/2031/ekadashi?on=2031-07-15", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17038, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-07-14T10:03:45+08:00", "utc": "2031-07-14T02:03:45Z", "ms": 1941761025350.6448 }, "end": { "local": "2031-07-15T11:59:03+08:00", "utc": "2031-07-15T03:59:03Z", "ms": 1941854343494.5974 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-14T10:03:45+08:00", "utc": "2031-07-14T02:03:45Z", "ms": 1941761025350.6448 }, "end": { "local": "2031-07-15T11:59:03+08:00", "utc": "2031-07-15T03:59:03Z", "ms": 1941854343494.5974 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-07-14", "window": { "start": { "local": "2031-07-14T05:19:47+08:00", "utc": "2031-07-13T21:19:47Z", "ms": 1941743986966.2573 }, "end": { "local": "2031-07-14T05:19:47+08:00", "utc": "2031-07-13T21:19:47Z", "ms": 1941743986966.2573 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-07-15", "window": { "start": { "local": "2031-07-15T05:20:15+08:00", "utc": "2031-07-14T21:20:15Z", "ms": 1941830414943.9683 }, "end": { "local": "2031-07-15T05:20:15+08:00", "utc": "2031-07-14T21:20:15Z", "ms": 1941830414943.9683 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:04 on Mon 14 Jul to 11:59 on Tue 15 Jul.", "fact": "2031-07-14T02:03:45Z → 2031-07-15T03:59:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 14th and 05:20 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17038 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Fuzhou, 2031: Tuesday 15 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": "2031-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Kāmikā Ekādaśī 2031 falls on Tuesday 15 July. Ekādaśī runs from 10:04 on Mon 14 Jul to 11:59 on Tue 15 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-07-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-07-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8014, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-07-16T14:15:20+08:00", "utc": "2031-07-16T06:15:20Z", "ms": 1941948919975.9204 }, "end": { "local": "2031-07-17T16:42:53+08:00", "utc": "2031-07-17T08:42:53Z", "ms": 1942044173451.9058 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-16T14:15:20+08:00", "utc": "2031-07-16T06:15:20Z", "ms": 1941948919975.9204 }, "end": { "local": "2031-07-17T16:42:53+08:00", "utc": "2031-07-17T08:42:53Z", "ms": 1942044173451.9058 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-07-16", "window": { "start": { "local": "2031-07-16T18:56:46+08:00", "utc": "2031-07-16T10:56:46Z", "ms": 1941965805846.5425 }, "end": { "local": "2031-07-16T20:20:01+08:00", "utc": "2031-07-16T12:20:01Z", "ms": 1941970801312.5942 } }, "covered_min": 83, "window_min": 83, "qualifies": true }, { "local_date": "2031-07-17", "window": { "start": { "local": "2031-07-17T18:56:28+08:00", "utc": "2031-07-17T10:56:28Z", "ms": 1942052187905.3535 }, "end": { "local": "2031-07-17T20:19:50+08:00", "utc": "2031-07-17T12:19:50Z", "ms": 1942057189611.5005 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:15 on Wed 16 Jul to 16:43 on Thu 17 Jul.", "fact": "2031-07-16T06:15:20Z → 2031-07-17T08:42:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:57–20:20 on the 16th, 18:56–20:20 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 83 of 83 minutes on the 16th and 0 of 83 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8014 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Wednesday 16 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": "2031-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Wednesday 16 July. Trayodaśī runs from 14:15 on Wed 16 Jul to 16:43 on Thu 17 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-07-16", "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/2031/shivaratri?on=2031-07-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16305, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-07-17T16:42:53+08:00", "utc": "2031-07-17T08:42:53Z", "ms": 1942044173451.9058 }, "end": { "local": "2031-07-18T19:13:24+08:00", "utc": "2031-07-18T11:13:24Z", "ms": 1942139603772.9019 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-17T16:42:53+08:00", "utc": "2031-07-17T08:42:53Z", "ms": 1942044173451.9058 }, "end": { "local": "2031-07-18T19:13:24+08:00", "utc": "2031-07-18T11:13:24Z", "ms": 1942139603772.9019 } }, "kaala": "nishita", "days": [ { "local_date": "2031-07-17", "window": { "start": { "local": "2031-07-17T23:45:04+08:00", "utc": "2031-07-17T15:45:04Z", "ms": 1942069504303.4048 }, "end": { "local": "2031-07-18T00:33:04+08:00", "utc": "2031-07-17T16:33:04Z", "ms": 1942072384303.4048 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-07-18", "window": { "start": { "local": "2031-07-18T23:45:09+08:00", "utc": "2031-07-18T15:45:09Z", "ms": 1942155909234.277 }, "end": { "local": "2031-07-19T00:33:09+08:00", "utc": "2031-07-18T16:33:09Z", "ms": 1942158789234.277 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:43 on Thu 17 Jul to 19:13 on Fri 18 Jul.", "fact": "2031-07-17T08:42:53Z → 2031-07-18T11:13:24Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 17th, 23:45–00:33 on the 18th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16305 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Thursday 17 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": "2031-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Thursday 17 July. Caturdaśī runs from 16:43 on Thu 17 Jul to 19:13 on Fri 18 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-07-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28349, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-07-22T02:03:54+08:00", "utc": "2031-07-21T18:03:54Z", "ms": 1942423433718.9167 }, "end": { "local": "2031-07-23T03:52:41+08:00", "utc": "2031-07-22T19:52:41Z", "ms": 1942516361287.0642 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-22T02:03:54+08:00", "utc": "2031-07-21T18:03:54Z", "ms": 1942423433718.9167 }, "end": { "local": "2031-07-23T03:52:41+08:00", "utc": "2031-07-22T19:52:41Z", "ms": 1942516361287.0642 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-07-22", "window": { "start": { "local": "2031-07-22T11:45:09+08:00", "utc": "2031-07-22T03:45:09Z", "ms": 1942458308534.3262 }, "end": { "local": "2031-07-22T12:33:09+08:00", "utc": "2031-07-22T04:33:09Z", "ms": 1942461188534.3262 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-07-23", "window": { "start": { "local": "2031-07-23T11:45:11+08:00", "utc": "2031-07-23T03:45:11Z", "ms": 1942544710581.5264 }, "end": { "local": "2031-07-23T12:33:11+08:00", "utc": "2031-07-23T04:33:11Z", "ms": 1942547590581.5264 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:04 on Tue 22 Jul to 03:53 on Wed 23 Jul.", "fact": "2031-07-21T18:03:54Z → 2031-07-22T19:52:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 22nd, 11:45–12:33 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28349 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Fuzhou, 2031: Tuesday 22 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Madhusravā Tṛtīyā (Hariyali Teej) 2031 falls on Tuesday 22 July. Tṛtīyā runs from 02:04 on Tue 22 Jul to 03:53 on Wed 23 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-07-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23074, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-07-23T03:52:41+08:00", "utc": "2031-07-22T19:52:41Z", "ms": 1942516361287.0642 }, "end": { "local": "2031-07-24T05:20:38+08:00", "utc": "2031-07-23T21:20:38Z", "ms": 1942608038215.9375 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-23T03:52:41+08:00", "utc": "2031-07-22T19:52:41Z", "ms": 1942516361287.0642 }, "end": { "local": "2031-07-24T05:20:38+08:00", "utc": "2031-07-23T21:20:38Z", "ms": 1942608038215.9375 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-07-23", "window": { "start": { "local": "2031-07-23T11:45:11+08:00", "utc": "2031-07-23T03:45:11Z", "ms": 1942544710581.5264 }, "end": { "local": "2031-07-23T12:33:11+08:00", "utc": "2031-07-23T04:33:11Z", "ms": 1942547590581.5264 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-07-24", "window": { "start": { "local": "2031-07-24T11:45:12+08:00", "utc": "2031-07-24T03:45:12Z", "ms": 1942631112041.3267 }, "end": { "local": "2031-07-24T12:33:12+08:00", "utc": "2031-07-24T04:33:12Z", "ms": 1942633992041.3267 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:53 on Wed 23 Jul to 05:21 on Thu 24 Jul.", "fact": "2031-07-22T19:52:41Z → 2031-07-23T21:20:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 23rd, 11:45–12:33 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23074 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Wednesday 23 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Wednesday 23 July. Caturthī runs from 03:53 on Wed 23 Jul to 05:21 on Thu 24 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-07-23", "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/2031/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19333, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-07-24T05:20:38+08:00", "utc": "2031-07-23T21:20:38Z", "ms": 1942608038215.9375 }, "end": { "local": "2031-07-25T06:23:00+08:00", "utc": "2031-07-24T22:23:00Z", "ms": 1942698179678.623 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-24T05:20:38+08:00", "utc": "2031-07-23T21:20:38Z", "ms": 1942608038215.9375 }, "end": { "local": "2031-07-25T06:23:00+08:00", "utc": "2031-07-24T22:23:00Z", "ms": 1942698179678.623 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-07-24", "window": { "start": { "local": "2031-07-24T11:45:12+08:00", "utc": "2031-07-24T03:45:12Z", "ms": 1942631112041.3267 }, "end": { "local": "2031-07-24T12:33:12+08:00", "utc": "2031-07-24T04:33:12Z", "ms": 1942633992041.3267 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-07-25", "window": { "start": { "local": "2031-07-25T11:45:13+08:00", "utc": "2031-07-25T03:45:13Z", "ms": 1942717512904.8042 }, "end": { "local": "2031-07-25T12:33:13+08:00", "utc": "2031-07-25T04:33:13Z", "ms": 1942720392904.8042 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:21 on Thu 24 Jul to 06:23 on Fri 25 Jul.", "fact": "2031-07-23T21:20:38Z → 2031-07-24T22:23:00Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19333 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Fuzhou, 2031: Thursday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Pañcamī 2031 falls on Thursday 24 July. Pañcamī runs from 05:21 on Thu 24 Jul to 06:23 on Fri 25 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-07-30", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9910, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-07-30T02:42:27+08:00", "utc": "2031-07-29T18:42:27Z", "ms": 1943116947061.0754 }, "end": { "local": "2031-07-31T00:03:11+08:00", "utc": "2031-07-30T16:03:11Z", "ms": 1943193790924.4026 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-30T02:42:27+08:00", "utc": "2031-07-29T18:42:27Z", "ms": 1943116947061.0754 }, "end": { "local": "2031-07-31T00:03:11+08:00", "utc": "2031-07-30T16:03:11Z", "ms": 1943193790924.4026 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-07-30", "window": { "start": { "local": "2031-07-30T05:27:37+08:00", "utc": "2031-07-29T21:27:37Z", "ms": 1943126857423.652 }, "end": { "local": "2031-07-30T05:27:37+08:00", "utc": "2031-07-29T21:27:37Z", "ms": 1943126857423.652 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-07-31", "window": { "start": { "local": "2031-07-31T05:28:07+08:00", "utc": "2031-07-30T21:28:07Z", "ms": 1943213287286.8123 }, "end": { "local": "2031-07-31T05:28:07+08:00", "utc": "2031-07-30T21:28:07Z", "ms": 1943213287286.8123 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:42 on Wed 30 Jul to 00:03 on Thu 31 Jul.", "fact": "2031-07-29T18:42:27Z → 2031-07-30T16:03:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:28 on the 30th and 05:28 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9910 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Fuzhou, 2031: Wednesday 30 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-30", "confidence": "determinate" } ], "quote": "In Fuzhou, Putradā Ekādaśī 2031 falls on Wednesday 30 July. Ekādaśī runs from 02:42 on Wed 30 Jul to 00:03 on Thu 31 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-07-30", "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/2031/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30015, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-07-31T00:03:11+08:00", "utc": "2031-07-30T16:03:11Z", "ms": 1943193790924.4026 }, "end": { "local": "2031-07-31T20:53:20+08:00", "utc": "2031-07-31T12:53:20Z", "ms": 1943268799954.579 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-31T00:03:11+08:00", "utc": "2031-07-30T16:03:11Z", "ms": 1943193790924.4026 }, "end": { "local": "2031-07-31T20:53:20+08:00", "utc": "2031-07-31T12:53:20Z", "ms": 1943268799954.579 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-07-30", "window": { "start": { "local": "2031-07-30T11:45:08+08:00", "utc": "2031-07-30T03:45:08Z", "ms": 1943149508057.0747 }, "end": { "local": "2031-07-30T12:33:08+08:00", "utc": "2031-07-30T04:33:08Z", "ms": 1943152388057.0747 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-07-31", "window": { "start": { "local": "2031-07-31T11:45:05+08:00", "utc": "2031-07-31T03:45:05Z", "ms": 1943235905232.0454 }, "end": { "local": "2031-07-31T12:33:05+08:00", "utc": "2031-07-31T04:33:05Z", "ms": 1943238785232.0454 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 00:03 on Thu 31 Jul to 20:53 on Thu 31 Jul.", "fact": "2031-07-30T16:03:11Z → 2031-07-31T12:53:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 30th, 11:45–12:33 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30015 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Fuzhou, 2031: Thursday 31 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-31", "confidence": "determinate" } ], "quote": "In Fuzhou, Dāmodara Dvādaśī 2031 falls on Thursday 31 July. Dvādaśī runs from 00:03 on Thu 31 Jul to 20:53 on Thu 31 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-07-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-07-31", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2288, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-07-31T20:53:20+08:00", "utc": "2031-07-31T12:53:20Z", "ms": 1943268799954.579 }, "end": { "local": "2031-08-01T17:20:43+08:00", "utc": "2031-08-01T09:20:43Z", "ms": 1943342442617.098 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-07-31T20:53:20+08:00", "utc": "2031-07-31T12:53:20Z", "ms": 1943268799954.579 }, "end": { "local": "2031-08-01T17:20:43+08:00", "utc": "2031-08-01T09:20:43Z", "ms": 1943342442617.098 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-07-31", "window": { "start": { "local": "2031-07-31T18:50:03+08:00", "utc": "2031-07-31T10:50:03Z", "ms": 1943261403177.2788 }, "end": { "local": "2031-07-31T20:15:12+08:00", "utc": "2031-07-31T12:15:12Z", "ms": 1943266511698.1467 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2031-08-01", "window": { "start": { "local": "2031-08-01T18:49:26+08:00", "utc": "2031-08-01T10:49:26Z", "ms": 1943347766494.6785 }, "end": { "local": "2031-08-01T20:14:44+08:00", "utc": "2031-08-01T12:14:44Z", "ms": 1943352883869.1548 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:53 on Thu 31 Jul to 17:21 on Fri 1 Aug.", "fact": "2031-07-31T12:53:20Z → 2031-08-01T09:20:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:50–20:15 on the 31st, 18:49–20:15 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 31st and 0 of 85 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2288 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Thursday 31 July.", "fact": "confidence: boundary (absent-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": "2031-07-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-07-31", "confidence": "boundary" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Thursday 31 July. Trayodaśī runs from 20:53 on Thu 31 Jul to 17:21 on Fri 1 Aug, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-07-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-02", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 15362, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-08-02T13:34:40+08:00", "utc": "2031-08-02T05:34:40Z", "ms": 1943415280179.4243 }, "end": { "local": "2031-08-03T09:45:38+08:00", "utc": "2031-08-03T01:45:38Z", "ms": 1943487938053.7979 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2031-08-02T23:39:51+08:00", "utc": "2031-08-02T15:39:51Z", "ms": 1943451590746.9546 }, "end": { "local": "2031-08-03T09:45:38+08:00", "utc": "2031-08-03T01:45:38Z", "ms": 1943487938053.7979 } }, "kaala": "day", "days": [ { "local_date": "2031-08-02", "window": { "start": { "local": "2031-08-02T05:29:07+08:00", "utc": "2031-08-01T21:29:07Z", "ms": 1943386146803.2515 }, "end": { "local": "2031-08-03T05:29:36+08:00", "utc": "2031-08-02T21:29:36Z", "ms": 1943472576436.0571 } }, "covered_min": 350, "window_min": 1440, "qualifies": true }, { "local_date": "2031-08-03", "window": { "start": { "local": "2031-08-03T05:29:36+08:00", "utc": "2031-08-02T21:29:36Z", "ms": 1943472576436.0571 }, "end": { "local": "2031-08-04T05:30:06+08:00", "utc": "2031-08-03T21:30:06Z", "ms": 1943559005974.816 } }, "covered_min": 256, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:35 on Sat 2 Aug to 09:46 on Sun 3 Aug. Its second half begins at 23:40 on Sat 2 Aug.", "fact": "2031-08-02T05:34:40Z → 2031-08-03T01:45:38Z · second half from 2031-08-02T15:39:51Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:29 on the 2nd, and from 05:30 on the 3rd.", "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 350 of 1440 minutes on the 2nd and 256 of 1440 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 15362 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Fuzhou, 2031: Saturday 2 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-02", "confidence": "boundary" } ], "quote": "In Fuzhou, Rakṣā Bandhana (Rakhi) 2031 falls on Saturday 2 August. The second half of Pūrṇimā runs from 23:40 on Sat 2 Aug to 09:46 on Sun 3 Aug and falls on two days: 350 minutes of it on the 2nd, 256 on the 3rd; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3702, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-08-02T13:34:40+08:00", "utc": "2031-08-02T05:34:40Z", "ms": 1943415280179.4243 }, "end": { "local": "2031-08-03T09:45:38+08:00", "utc": "2031-08-03T01:45:38Z", "ms": 1943487938053.7979 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2031-08-02T13:34:40+08:00", "utc": "2031-08-02T05:34:40Z", "ms": 1943415280179.4243 }, "end": { "local": "2031-08-03T09:45:38+08:00", "utc": "2031-08-03T01:45:38Z", "ms": 1943487938053.7979 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-08-02", "window": { "start": { "local": "2031-08-02T11:44:58+08:00", "utc": "2031-08-02T03:44:58Z", "ms": 1943408697732.6016 }, "end": { "local": "2031-08-02T12:32:58+08:00", "utc": "2031-08-02T04:32:58Z", "ms": 1943411577732.6016 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-08-03", "window": { "start": { "local": "2031-08-03T11:44:53+08:00", "utc": "2031-08-03T03:44:53Z", "ms": 1943495093067.7139 }, "end": { "local": "2031-08-03T12:32:53+08:00", "utc": "2031-08-03T04:32:53Z", "ms": 1943497973067.7139 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:35 on Sat 2 Aug to 09:46 on Sun 3 Aug.", "fact": "2031-08-02T05:34:40Z → 2031-08-03T01:45:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 2nd, 11:45–12:33 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 3702 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Fuzhou, 2031: Sunday 3 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-03", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṛṣi Tarpaṇa 2031 falls on Sunday 3 August. Pūrṇimā runs from 13:35 on Sat 2 Aug to 09:46 on Sun 3 Aug, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25743, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2031-08-04T06:04:38+08:00", "utc": "2031-08-03T22:04:38Z", "ms": 1943561077893.7844 }, "end": { "local": "2031-08-05T02:42:49+08:00", "utc": "2031-08-04T18:42:49Z", "ms": 1943635368584.3481 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-04T06:04:38+08:00", "utc": "2031-08-03T22:04:38Z", "ms": 1943561077893.7844 }, "end": { "local": "2031-08-05T02:42:49+08:00", "utc": "2031-08-04T18:42:49Z", "ms": 1943635368584.3481 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-08-03", "window": { "start": { "local": "2031-08-03T18:48:57+08:00", "utc": "2031-08-03T10:48:57Z", "ms": 1943520537254.0735 }, "end": { "local": "2031-08-03T18:48:57+08:00", "utc": "2031-08-03T10:48:57Z", "ms": 1943520537254.0735 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-08-04", "window": { "start": { "local": "2031-08-04T19:33:46+08:00", "utc": "2031-08-04T11:33:46Z", "ms": 1943609626007.9724 }, "end": { "local": "2031-08-04T19:33:46+08:00", "utc": "2031-08-04T11:33:46Z", "ms": 1943609626007.9724 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 06:05 on Mon 4 Aug to 02:43 on Tue 5 Aug.", "fact": "2031-08-03T22:04:38Z → 2031-08-04T18:42:49Z" }, { "step": "kaala", "text": "Moonrise is at 18:49 on the 3rd and 19:34 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25743 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Fuzhou, 2031: Monday 4 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": "2031-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Aśūnya Śayana Vrata 2031 falls on Monday 4 August. Dvitīyā runs from 06:05 on Mon 4 Aug to 02:43 on Tue 5 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32513, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-08-05T02:42:49+08:00", "utc": "2031-08-04T18:42:49Z", "ms": 1943635368584.3481 }, "end": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-05T02:42:49+08:00", "utc": "2031-08-04T18:42:49Z", "ms": 1943635368584.3481 }, "end": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-08-05", "window": { "start": { "local": "2031-08-05T11:44:42+08:00", "utc": "2031-08-05T03:44:42Z", "ms": 1943667881941.0195 }, "end": { "local": "2031-08-05T12:32:42+08:00", "utc": "2031-08-05T04:32:42Z", "ms": 1943670761941.0195 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-08-06", "window": { "start": { "local": "2031-08-06T11:44:35+08:00", "utc": "2031-08-06T03:44:35Z", "ms": 1943754275494.4258 }, "end": { "local": "2031-08-06T12:32:35+08:00", "utc": "2031-08-06T04:32:35Z", "ms": 1943757155494.4258 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:43 on Tue 5 Aug to 23:51 on Tue 5 Aug.", "fact": "2031-08-04T18:42:49Z → 2031-08-05T15:50:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 5th, 11:45–12:33 on the 6th.", "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 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32513 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Fuzhou, 2031: Tuesday 5 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": "2031-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-05", "confidence": "determinate" } ], "quote": "In Fuzhou, Kajjalī Tṛtīyā (Kajari Teej) 2031 falls on Tuesday 5 August. Tṛtīyā runs from 02:43 on Tue 5 Aug to 23:51 on Tue 5 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10336, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 }, "end": { "local": "2031-08-06T21:38:22+08:00", "utc": "2031-08-06T13:38:22Z", "ms": 1943789902414.878 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 }, "end": { "local": "2031-08-06T21:38:22+08:00", "utc": "2031-08-06T13:38:22Z", "ms": 1943789902414.878 } }, "kaala": "sayahna", "days": [ { "local_date": "2031-08-05", "window": { "start": { "local": "2031-08-05T16:07:34+08:00", "utc": "2031-08-05T08:07:34Z", "ms": 1943683653857.6982 }, "end": { "local": "2031-08-05T18:46:48+08:00", "utc": "2031-08-05T10:46:48Z", "ms": 1943693208468.8174 } }, "covered_min": 0, "window_min": 159, "qualifies": false }, { "local_date": "2031-08-06", "window": { "start": { "local": "2031-08-06T16:07:06+08:00", "utc": "2031-08-06T08:07:06Z", "ms": 1943770025943.9033 }, "end": { "local": "2031-08-06T18:46:06+08:00", "utc": "2031-08-06T10:46:06Z", "ms": 1943779566243.555 } }, "covered_min": 159, "window_min": 159, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:51 on Tue 5 Aug to 21:38 on Wed 6 Aug.", "fact": "2031-08-05T15:50:52Z → 2031-08-06T13:38:22Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:08–18:47 on the 5th, 16:07–18:46 on the 6th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 159 minutes on the 5th and 159 of 159 on the 6th.", "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 10336 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Fuzhou, 2031: Wednesday 6 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": "2031-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Bahulā Caturthī 2031 falls on Wednesday 6 August. Caturthī runs from 23:51 on Tue 5 Aug to 21:38 on Wed 6 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-08-06", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2537, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 }, "end": { "local": "2031-08-06T21:38:22+08:00", "utc": "2031-08-06T13:38:22Z", "ms": 1943789902414.878 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-05T23:50:52+08:00", "utc": "2031-08-05T15:50:52Z", "ms": 1943711452403.6206 }, "end": { "local": "2031-08-06T21:38:22+08:00", "utc": "2031-08-06T13:38:22Z", "ms": 1943789902414.878 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-08-05", "window": { "start": { "local": "2031-08-05T20:15:45+08:00", "utc": "2031-08-05T12:15:45Z", "ms": 1943698544689.446 }, "end": { "local": "2031-08-05T20:15:45+08:00", "utc": "2031-08-05T12:15:45Z", "ms": 1943698544689.446 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-08-06", "window": { "start": { "local": "2031-08-06T20:56:05+08:00", "utc": "2031-08-06T12:56:05Z", "ms": 1943787364949.5767 }, "end": { "local": "2031-08-06T20:56:05+08:00", "utc": "2031-08-06T12:56:05Z", "ms": 1943787364949.5767 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:51 on Tue 5 Aug to 21:38 on Wed 6 Aug.", "fact": "2031-08-05T15:50:52Z → 2031-08-06T13:38:22Z" }, { "step": "kaala", "text": "Moonrise is at 20:16 on the 5th and 20:56 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2537 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Wednesday 6 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": "2031-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Wednesday 6 August. Caturthī runs from 23:51 on Tue 5 Aug to 21:38 on Wed 6 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-08-06", "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/2031/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25580, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-08-07T20:12:49+08:00", "utc": "2031-08-07T12:12:49Z", "ms": 1943871169260.8452 }, "end": { "local": "2031-08-08T19:38:41+08:00", "utc": "2031-08-08T11:38:41Z", "ms": 1943955520765.7773 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-07T20:12:49+08:00", "utc": "2031-08-07T12:12:49Z", "ms": 1943871169260.8452 }, "end": { "local": "2031-08-08T19:38:41+08:00", "utc": "2031-08-08T11:38:41Z", "ms": 1943955520765.7773 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-08-07", "window": { "start": { "local": "2031-08-07T11:44:28+08:00", "utc": "2031-08-07T03:44:28Z", "ms": 1943840668469.0784 }, "end": { "local": "2031-08-07T12:32:28+08:00", "utc": "2031-08-07T04:32:28Z", "ms": 1943843548469.0784 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-08-08", "window": { "start": { "local": "2031-08-08T11:44:21+08:00", "utc": "2031-08-08T03:44:21Z", "ms": 1943927060872.0576 }, "end": { "local": "2031-08-08T12:32:21+08:00", "utc": "2031-08-08T04:32:21Z", "ms": 1943929940872.0576 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:13 on Thu 7 Aug to 19:39 on Fri 8 Aug.", "fact": "2031-08-07T12:12:49Z → 2031-08-08T11:38:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 7th, 11:44–12:32 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25580 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Fuzhou, 2031: Friday 8 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Hala Ṣaṣṭhī 2031 falls on Friday 8 August. Ṣaṣṭhī runs from 20:13 on Thu 7 Aug to 19:39 on Fri 8 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9735, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-08-09T19:56:26+08:00", "utc": "2031-08-09T11:56:26Z", "ms": 1944042985918.784 }, "end": { "local": "2031-08-10T21:02:03+08:00", "utc": "2031-08-10T13:02:03Z", "ms": 1944133322935.5884 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-09T19:56:26+08:00", "utc": "2031-08-09T11:56:26Z", "ms": 1944042985918.784 }, "end": { "local": "2031-08-10T21:02:03+08:00", "utc": "2031-08-10T13:02:03Z", "ms": 1944133322935.5884 } }, "kaala": "nishita", "days": [ { "local_date": "2031-08-09", "window": { "start": { "local": "2031-08-09T23:44:27+08:00", "utc": "2031-08-09T15:44:27Z", "ms": 1944056667129.2373 }, "end": { "local": "2031-08-10T00:32:27+08:00", "utc": "2031-08-09T16:32:27Z", "ms": 1944059547129.2373 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-08-10", "window": { "start": { "local": "2031-08-10T23:44:18+08:00", "utc": "2031-08-10T15:44:18Z", "ms": 1944143058337.0432 }, "end": { "local": "2031-08-11T00:32:18+08:00", "utc": "2031-08-10T16:32:18Z", "ms": 1944145938337.0432 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:56 on Sat 9 Aug to 21:02 on Sun 10 Aug.", "fact": "2031-08-09T11:56:26Z → 2031-08-10T13:02:03Z" }, { "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": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9735 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Fuzhou, 2031: Saturday 9 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Janmāṣṭamī 2031 falls on Saturday 9 August. Aṣṭamī runs from 19:56 on Sat 9 Aug to 21:02 on Sun 10 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25580, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-08-08T19:38:41+08:00", "utc": "2031-08-08T11:38:41Z", "ms": 1943955520765.7773 }, "end": { "local": "2031-08-09T19:56:26+08:00", "utc": "2031-08-09T11:56:26Z", "ms": 1944042985918.784 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-08T19:38:41+08:00", "utc": "2031-08-08T11:38:41Z", "ms": 1943955520765.7773 }, "end": { "local": "2031-08-09T19:56:26+08:00", "utc": "2031-08-09T11:56:26Z", "ms": 1944042985918.784 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-08-08", "window": { "start": { "local": "2031-08-08T11:44:21+08:00", "utc": "2031-08-08T03:44:21Z", "ms": 1943927060872.0576 }, "end": { "local": "2031-08-08T12:32:21+08:00", "utc": "2031-08-08T04:32:21Z", "ms": 1943929940872.0576 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-08-09", "window": { "start": { "local": "2031-08-09T11:44:13+08:00", "utc": "2031-08-09T03:44:13Z", "ms": 1944013452709.9868 }, "end": { "local": "2031-08-09T12:32:13+08:00", "utc": "2031-08-09T04:32:13Z", "ms": 1944016332709.9868 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:39 on Fri 8 Aug to 19:56 on Sat 9 Aug.", "fact": "2031-08-08T11:38:41Z → 2031-08-09T11:56:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 8th, 11:44–12:32 on the 9th.", "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 8th and 48 of 48 on the 9th.", "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 25580 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Fuzhou, 2031: Saturday 9 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-09", "confidence": "determinate" } ], "quote": "In Fuzhou, Śītalā Saptamī 2031 falls on Saturday 9 August. Saptamī runs from 19:39 on Fri 8 Aug to 19:56 on Sat 9 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-08-13", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7553, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-08-13T01:00:27+08:00", "utc": "2031-08-12T17:00:27Z", "ms": 1944320427353.6155 }, "end": { "local": "2031-08-14T03:29:02+08:00", "utc": "2031-08-13T19:29:02Z", "ms": 1944415741718.9578 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-13T01:00:27+08:00", "utc": "2031-08-12T17:00:27Z", "ms": 1944320427353.6155 }, "end": { "local": "2031-08-14T03:29:02+08:00", "utc": "2031-08-13T19:29:02Z", "ms": 1944415741718.9578 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-08-13", "window": { "start": { "local": "2031-08-13T05:34:27+08:00", "utc": "2031-08-12T21:34:27Z", "ms": 1944336866504.4683 }, "end": { "local": "2031-08-13T05:34:27+08:00", "utc": "2031-08-12T21:34:27Z", "ms": 1944336866504.4683 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-08-14", "window": { "start": { "local": "2031-08-14T05:34:55+08:00", "utc": "2031-08-13T21:34:55Z", "ms": 1944423294725.7712 }, "end": { "local": "2031-08-14T05:34:55+08:00", "utc": "2031-08-13T21:34:55Z", "ms": 1944423294725.7712 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:00 on Wed 13 Aug to 03:29 on Thu 14 Aug.", "fact": "2031-08-12T17:00:27Z → 2031-08-13T19:29:02Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 13th and 05:35 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7553 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Fuzhou, 2031: Wednesday 13 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": "2031-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Ajā Ekādaśī 2031 falls on Wednesday 13 August. Ekādaśī runs from 01:00 on Wed 13 Aug to 03:29 on Thu 14 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-08-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-08-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35616, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-08-15T06:00:53+08:00", "utc": "2031-08-14T22:00:53Z", "ms": 1944511253067.058 }, "end": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-15T06:00:53+08:00", "utc": "2031-08-14T22:00:53Z", "ms": 1944511253067.058 }, "end": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-08-14", "window": { "start": { "local": "2031-08-14T18:39:53+08:00", "utc": "2031-08-14T10:39:53Z", "ms": 1944470392554.5574 }, "end": { "local": "2031-08-14T20:07:17+08:00", "utc": "2031-08-14T12:07:17Z", "ms": 1944475636583.8945 } }, "covered_min": 0, "window_min": 87, "qualifies": false }, { "local_date": "2031-08-15", "window": { "start": { "local": "2031-08-15T18:39:02+08:00", "utc": "2031-08-15T10:39:02Z", "ms": 1944556741661.0913 }, "end": { "local": "2031-08-15T20:06:36+08:00", "utc": "2031-08-15T12:06:36Z", "ms": 1944561996192.215 } }, "covered_min": 88, "window_min": 88, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:01 on Fri 15 Aug to 08:26 on Sat 16 Aug.", "fact": "2031-08-14T22:00:53Z → 2031-08-16T00:26:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:07 on the 14th, 18:39–20:07 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 87 minutes on the 14th and 88 of 88 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35616 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Friday 15 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": "2031-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Friday 15 August. Trayodaśī runs from 06:01 on Fri 15 Aug to 08:26 on Sat 16 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-08-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28752, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 }, "end": { "local": "2031-08-17T10:38:05+08:00", "utc": "2031-08-17T02:38:05Z", "ms": 1944700684837.5251 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 }, "end": { "local": "2031-08-17T10:38:05+08:00", "utc": "2031-08-17T02:38:05Z", "ms": 1944700684837.5251 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-08-16", "window": { "start": { "local": "2031-08-16T18:38:10+08:00", "utc": "2031-08-16T10:38:10Z", "ms": 1944643089904.8389 }, "end": { "local": "2031-08-16T20:05:55+08:00", "utc": "2031-08-16T12:05:55Z", "ms": 1944648355028.1545 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "2031-08-17", "window": { "start": { "local": "2031-08-17T18:37:17+08:00", "utc": "2031-08-17T10:37:17Z", "ms": 1944729437305.7449 }, "end": { "local": "2031-08-17T20:05:13+08:00", "utc": "2031-08-17T12:05:13Z", "ms": 1944734713108.2922 } }, "covered_min": 0, "window_min": 88, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:26 on Sat 16 Aug to 10:38 on Sun 17 Aug.", "fact": "2031-08-16T00:26:12Z → 2031-08-17T02:38:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:38–20:06 on the 16th, 18:37–20:05 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 88 of 88 minutes on the 16th and 0 of 88 on the 17th.", "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 28752 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Fuzhou, 2031: Saturday 16 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Aghora Caturdaśī 2031 falls on Saturday 16 August. Caturdaśī runs from 08:26 on Sat 16 Aug to 10:38 on Sun 17 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/shivaratri?on=2031-08-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28486, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 }, "end": { "local": "2031-08-17T10:38:05+08:00", "utc": "2031-08-17T02:38:05Z", "ms": 1944700684837.5251 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-16T08:26:12+08:00", "utc": "2031-08-16T00:26:12Z", "ms": 1944606372423.9036 }, "end": { "local": "2031-08-17T10:38:05+08:00", "utc": "2031-08-17T02:38:05Z", "ms": 1944700684837.5251 } }, "kaala": "nishita", "days": [ { "local_date": "2031-08-15", "window": { "start": { "local": "2031-08-15T23:43:26+08:00", "utc": "2031-08-15T15:43:26Z", "ms": 1944575006152.8052 }, "end": { "local": "2031-08-16T00:31:26+08:00", "utc": "2031-08-15T16:31:26Z", "ms": 1944577886152.8052 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-08-16", "window": { "start": { "local": "2031-08-16T23:43:14+08:00", "utc": "2031-08-16T15:43:14Z", "ms": 1944661394117.2722 }, "end": { "local": "2031-08-17T00:31:14+08:00", "utc": "2031-08-16T16:31:14Z", "ms": 1944664274117.2722 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:26 on Sat 16 Aug to 10:38 on Sun 17 Aug.", "fact": "2031-08-16T00:26:12Z → 2031-08-17T02:38:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:43–00:31 on the 15th, 23:43–00:31 on the 16th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28486 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Saturday 16 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Saturday 16 August. Caturdaśī runs from 08:26 on Sat 16 Aug to 10:38 on Sun 17 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-08-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/ekadashi?on=2031-08-29", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2911, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-08-28T09:23:34+08:00", "utc": "2031-08-28T01:23:34Z", "ms": 1945646614418.9648 }, "end": { "local": "2031-08-29T06:30:06+08:00", "utc": "2031-08-28T22:30:06Z", "ms": 1945722606327.0522 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-28T09:23:34+08:00", "utc": "2031-08-28T01:23:34Z", "ms": 1945646614418.9648 }, "end": { "local": "2031-08-29T06:30:06+08:00", "utc": "2031-08-28T22:30:06Z", "ms": 1945722606327.0522 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-08-28", "window": { "start": { "local": "2031-08-28T05:41:10+08:00", "utc": "2031-08-27T21:41:10Z", "ms": 1945633269708.3005 }, "end": { "local": "2031-08-28T05:41:10+08:00", "utc": "2031-08-27T21:41:10Z", "ms": 1945633269708.3005 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-08-29", "window": { "start": { "local": "2031-08-29T05:41:35+08:00", "utc": "2031-08-28T21:41:35Z", "ms": 1945719695003.2283 }, "end": { "local": "2031-08-29T05:41:35+08:00", "utc": "2031-08-28T21:41:35Z", "ms": 1945719695003.2283 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:24 on Thu 28 Aug to 06:30 on Fri 29 Aug.", "fact": "2031-08-28T01:23:34Z → 2031-08-28T22:30:06Z" }, { "step": "kaala", "text": "Sunrise is at 05:41 on the 28th and 05:42 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2911 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Fuzhou, 2031: Friday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-29", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Ekādaśī 2031 falls on Friday 29 August. Ekādaśī runs from 09:24 on Thu 28 Aug to 06:30 on Fri 29 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-08-29", "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/2031/pradosha-vrata?on=2031-08-30", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14478, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-08-30T03:18:20+08:00", "utc": "2031-08-29T19:18:20Z", "ms": 1945797500443.9329 }, "end": { "local": "2031-08-30T23:56:26+08:00", "utc": "2031-08-30T15:56:26Z", "ms": 1945871785637.3452 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-08-30T03:18:20+08:00", "utc": "2031-08-29T19:18:20Z", "ms": 1945797500443.9329 }, "end": { "local": "2031-08-30T23:56:26+08:00", "utc": "2031-08-30T15:56:26Z", "ms": 1945871785637.3452 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-08-29", "window": { "start": { "local": "2031-08-29T18:25:48+08:00", "utc": "2031-08-29T10:25:48Z", "ms": 1945765547904.5105 }, "end": { "local": "2031-08-29T19:55:58+08:00", "utc": "2031-08-29T11:55:58Z", "ms": 1945770957533.285 } }, "covered_min": 0, "window_min": 90, "qualifies": false }, { "local_date": "2031-08-30", "window": { "start": { "local": "2031-08-30T18:24:46+08:00", "utc": "2031-08-30T10:24:46Z", "ms": 1945851886288.6814 }, "end": { "local": "2031-08-30T19:55:07+08:00", "utc": "2031-08-30T11:55:07Z", "ms": 1945857307459.6255 } }, "covered_min": 90, "window_min": 90, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:18 on Sat 30 Aug to 23:56 on Sat 30 Aug.", "fact": "2031-08-29T19:18:20Z → 2031-08-30T15:56:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–19:56 on the 29th, 18:25–19:55 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 90 minutes on the 29th and 90 of 90 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14478 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Saturday 30 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-08-30", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Saturday 30 August. Trayodaśī runs from 03:18 on Sat 30 Aug to 23:56 on Sat 30 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-09-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35454, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-09-04T10:19:23+08:00", "utc": "2031-09-04T02:19:23Z", "ms": 1946254763376.3777 }, "end": { "local": "2031-09-05T09:20:52+08:00", "utc": "2031-09-05T01:20:52Z", "ms": 1946337651571.5898 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-04T10:19:23+08:00", "utc": "2031-09-04T02:19:23Z", "ms": 1946254763376.3777 }, "end": { "local": "2031-09-05T09:20:52+08:00", "utc": "2031-09-05T01:20:52Z", "ms": 1946337651571.5898 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-09-04", "window": { "start": { "local": "2031-09-04T20:10:17+08:00", "utc": "2031-09-04T12:10:17Z", "ms": 1946290217296.6016 }, "end": { "local": "2031-09-04T20:10:17+08:00", "utc": "2031-09-04T12:10:17Z", "ms": 1946290217296.6016 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-09-05", "window": { "start": { "local": "2031-09-05T20:52:27+08:00", "utc": "2031-09-05T12:52:27Z", "ms": 1946379147359.6394 }, "end": { "local": "2031-09-05T20:52:27+08:00", "utc": "2031-09-05T12:52:27Z", "ms": 1946379147359.6394 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:19 on Thu 4 Sep to 09:21 on Fri 5 Sep.", "fact": "2031-09-04T02:19:23Z → 2031-09-05T01:20:52Z" }, { "step": "kaala", "text": "Moonrise is at 20:10 on the 4th and 20:52 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35454 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Thursday 4 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": "2031-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Thursday 4 September. Caturthī runs from 10:19 on Thu 4 Sep to 09:21 on Fri 5 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-09-04", "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/2031/ekadashi?on=2031-09-12", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33082, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-09-11T18:11:04+08:00", "utc": "2031-09-11T10:11:04Z", "ms": 1946887863546.448 }, "end": { "local": "2031-09-12T20:36:18+08:00", "utc": "2031-09-12T12:36:18Z", "ms": 1946982978487.602 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-11T18:11:04+08:00", "utc": "2031-09-11T10:11:04Z", "ms": 1946887863546.448 }, "end": { "local": "2031-09-12T20:36:18+08:00", "utc": "2031-09-12T12:36:18Z", "ms": 1946982978487.602 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-09-12", "window": { "start": { "local": "2031-09-12T05:47:16+08:00", "utc": "2031-09-11T21:47:16Z", "ms": 1946929636446.7834 }, "end": { "local": "2031-09-12T05:47:16+08:00", "utc": "2031-09-11T21:47:16Z", "ms": 1946929636446.7834 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-09-13", "window": { "start": { "local": "2031-09-13T05:47:40+08:00", "utc": "2031-09-12T21:47:40Z", "ms": 1947016060437.075 }, "end": { "local": "2031-09-13T05:47:40+08:00", "utc": "2031-09-12T21:47:40Z", "ms": 1947016060437.075 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:11 on Thu 11 Sep to 20:36 on Fri 12 Sep.", "fact": "2031-09-11T10:11:04Z → 2031-09-12T12:36:18Z" }, { "step": "kaala", "text": "Sunrise is at 05:47 on the 12th and 05:48 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 33082 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Fuzhou, 2031: Friday 12 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": "2031-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Ekādaśī 2031 falls on Friday 12 September. Ekādaśī runs from 18:11 on Thu 11 Sep to 20:36 on Fri 12 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-09-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-09-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10980, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-09-13T22:45:49+08:00", "utc": "2031-09-13T14:45:49Z", "ms": 1947077148844.6987 }, "end": { "local": "2031-09-15T00:32:37+08:00", "utc": "2031-09-14T16:32:37Z", "ms": 1947169956625.208 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-13T22:45:49+08:00", "utc": "2031-09-13T14:45:49Z", "ms": 1947077148844.6987 }, "end": { "local": "2031-09-15T00:32:37+08:00", "utc": "2031-09-14T16:32:37Z", "ms": 1947169956625.208 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-09-13", "window": { "start": { "local": "2031-09-13T18:09:42+08:00", "utc": "2031-09-13T10:09:42Z", "ms": 1947060581771.6357 }, "end": { "local": "2031-09-13T19:42:49+08:00", "utc": "2031-09-13T11:42:49Z", "ms": 1947066168793.2424 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "2031-09-14", "window": { "start": { "local": "2031-09-14T18:08:35+08:00", "utc": "2031-09-14T10:08:35Z", "ms": 1947146915252.177 }, "end": { "local": "2031-09-14T19:41:54+08:00", "utc": "2031-09-14T11:41:54Z", "ms": 1947152514344.7805 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:46 on Sat 13 Sep to 00:33 on Mon 15 Sep.", "fact": "2031-09-13T14:45:49Z → 2031-09-14T16:32:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:43 on the 13th, 18:09–19:42 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 93 minutes on the 13th and 93 of 93 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 10980 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Sunday 14 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": "2031-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Sunday 14 September. Trayodaśī runs from 22:46 on Sat 13 Sep to 00:33 on Mon 15 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-09-14", "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/2031/shivaratri?on=2031-09-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 605, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-09-15T00:32:37+08:00", "utc": "2031-09-14T16:32:37Z", "ms": 1947169956625.208 }, "end": { "local": "2031-09-16T01:53:13+08:00", "utc": "2031-09-15T17:53:13Z", "ms": 1947261193104.0283 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": true, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-15T00:32:37+08:00", "utc": "2031-09-14T16:32:37Z", "ms": 1947169956625.208 }, "end": { "local": "2031-09-16T01:53:13+08:00", "utc": "2031-09-15T17:53:13Z", "ms": 1947261193104.0283 } }, "kaala": "nishita", "days": [ { "local_date": "2031-09-14", "window": { "start": { "local": "2031-09-14T23:34:32+08:00", "utc": "2031-09-14T15:34:32Z", "ms": 1947166471849.4404 }, "end": { "local": "2031-09-15T00:22:32+08:00", "utc": "2031-09-14T16:22:32Z", "ms": 1947169351849.4404 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-09-15", "window": { "start": { "local": "2031-09-15T23:34:11+08:00", "utc": "2031-09-15T15:34:11Z", "ms": 1947252850549.6309 }, "end": { "local": "2031-09-16T00:22:11+08:00", "utc": "2031-09-15T16:22:11Z", "ms": 1947255730549.6309 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:33 on Mon 15 Sep to 01:53 on Tue 16 Sep.", "fact": "2031-09-14T16:32:37Z → 2031-09-15T17:53:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:35–00:23 on the 14th, 23:34–00:22 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 605 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Monday 15 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Monday 15 September. Caturdaśī runs from 00:33 on Mon 15 Sep to 01:53 on Tue 16 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-09-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29893, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-09-17T02:46:55+08:00", "utc": "2031-09-16T18:46:55Z", "ms": 1947350814595.767 }, "end": { "local": "2031-09-18T03:14:41+08:00", "utc": "2031-09-17T19:14:41Z", "ms": 1947438881452.3442 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-17T02:46:55+08:00", "utc": "2031-09-16T18:46:55Z", "ms": 1947350814595.767 }, "end": { "local": "2031-09-18T03:14:41+08:00", "utc": "2031-09-17T19:14:41Z", "ms": 1947438881452.3442 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-17", "window": { "start": { "local": "2031-09-17T11:33:16+08:00", "utc": "2031-09-17T03:33:16Z", "ms": 1947382395816.7295 }, "end": { "local": "2031-09-17T12:21:16+08:00", "utc": "2031-09-17T04:21:16Z", "ms": 1947385275816.7295 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-09-18", "window": { "start": { "local": "2031-09-18T11:32:54+08:00", "utc": "2031-09-18T03:32:54Z", "ms": 1947468774449.6045 }, "end": { "local": "2031-09-18T12:20:54+08:00", "utc": "2031-09-18T04:20:54Z", "ms": 1947471654449.6045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:47 on Wed 17 Sep to 03:15 on Thu 18 Sep.", "fact": "2031-09-16T18:46:55Z → 2031-09-17T19:14:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 17th, 11:33–12:21 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29893 s" }, { "step": "ruling", "text": "Rudra Vrata, Fuzhou, 2031: Wednesday 17 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": "2031-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Rudra Vrata 2031 falls on Wednesday 17 September. Pratipadā runs from 02:47 on Wed 17 Sep to 03:15 on Thu 18 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29654, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2031-09-19T03:18:19+08:00", "utc": "2031-09-18T19:18:19Z", "ms": 1947525498684.0852 }, "end": { "local": "2031-09-20T02:59:30+08:00", "utc": "2031-09-19T18:59:30Z", "ms": 1947610769752.9175 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-19T03:18:19+08:00", "utc": "2031-09-18T19:18:19Z", "ms": 1947525498684.0852 }, "end": { "local": "2031-09-20T02:59:30+08:00", "utc": "2031-09-19T18:59:30Z", "ms": 1947610769752.9175 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-19", "window": { "start": { "local": "2031-09-19T11:32:33+08:00", "utc": "2031-09-19T03:32:33Z", "ms": 1947555153097.4023 }, "end": { "local": "2031-09-19T12:20:33+08:00", "utc": "2031-09-19T04:20:33Z", "ms": 1947558033097.4023 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-09-20", "window": { "start": { "local": "2031-09-20T11:32:12+08:00", "utc": "2031-09-20T03:32:12Z", "ms": 1947641531776.6294 }, "end": { "local": "2031-09-20T12:20:12+08:00", "utc": "2031-09-20T04:20:12Z", "ms": 1947644411776.6294 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:18 on Fri 19 Sep to 02:59 on Sat 20 Sep.", "fact": "2031-09-18T19:18:19Z → 2031-09-19T18:59:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 19th, 11:32–12:20 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 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29654 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Fuzhou, 2031: Friday 19 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": "2031-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Haritālikā Vrata (Hartalika Teej) 2031 falls on Friday 19 September. Tṛtīyā runs from 03:18 on Fri 19 Sep to 02:59 on Sat 20 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30762, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-09-20T02:59:30+08:00", "utc": "2031-09-19T18:59:30Z", "ms": 1947610769752.9175 }, "end": { "local": "2031-09-21T02:19:29+08:00", "utc": "2031-09-20T18:19:29Z", "ms": 1947694769369.115 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-20T02:59:30+08:00", "utc": "2031-09-19T18:59:30Z", "ms": 1947610769752.9175 }, "end": { "local": "2031-09-21T02:19:29+08:00", "utc": "2031-09-20T18:19:29Z", "ms": 1947694769369.115 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-20", "window": { "start": { "local": "2031-09-20T11:32:12+08:00", "utc": "2031-09-20T03:32:12Z", "ms": 1947641531776.6294 }, "end": { "local": "2031-09-20T12:20:12+08:00", "utc": "2031-09-20T04:20:12Z", "ms": 1947644411776.6294 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-09-21", "window": { "start": { "local": "2031-09-21T11:31:51+08:00", "utc": "2031-09-21T03:31:51Z", "ms": 1947727910504.037 }, "end": { "local": "2031-09-21T12:19:51+08:00", "utc": "2031-09-21T04:19:51Z", "ms": 1947730790504.037 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:59 on Sat 20 Sep to 02:19 on Sun 21 Sep.", "fact": "2031-09-19T18:59:30Z → 2031-09-20T18:19:29Z" }, { "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": "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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30762 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Fuzhou, 2031: Saturday 20 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": "2031-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Gaṇeśa Caturthī 2031 falls on Saturday 20 September. Caturthī runs from 02:59 on Sat 20 Sep to 02:19 on Sun 21 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33141, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-09-21T02:19:29+08:00", "utc": "2031-09-20T18:19:29Z", "ms": 1947694769369.115 }, "end": { "local": "2031-09-22T01:18:57+08:00", "utc": "2031-09-21T17:18:57Z", "ms": 1947777536959.6353 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-21T02:19:29+08:00", "utc": "2031-09-20T18:19:29Z", "ms": 1947694769369.115 }, "end": { "local": "2031-09-22T01:18:57+08:00", "utc": "2031-09-21T17:18:57Z", "ms": 1947777536959.6353 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-21", "window": { "start": { "local": "2031-09-21T11:31:51+08:00", "utc": "2031-09-21T03:31:51Z", "ms": 1947727910504.037 }, "end": { "local": "2031-09-21T12:19:51+08:00", "utc": "2031-09-21T04:19:51Z", "ms": 1947730790504.037 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-09-22", "window": { "start": { "local": "2031-09-22T11:31:29+08:00", "utc": "2031-09-22T03:31:29Z", "ms": 1947814289296.8035 }, "end": { "local": "2031-09-22T12:19:29+08:00", "utc": "2031-09-22T04:19:29Z", "ms": 1947817169296.8035 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:19 on Sun 21 Sep to 01:19 on Mon 22 Sep.", "fact": "2031-09-20T18:19:29Z → 2031-09-21T17:18:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 21st, 11:31–12:19 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 33141 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Fuzhou, 2031: Sunday 21 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": "2031-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Ṛṣi Pañcamī 2031 falls on Sunday 21 September. Pañcamī runs from 02:19 on Sun 21 Sep to 01:19 on Mon 22 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36752, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-09-22T01:18:57+08:00", "utc": "2031-09-21T17:18:57Z", "ms": 1947777536959.6353 }, "end": { "local": "2031-09-22T23:58:09+08:00", "utc": "2031-09-22T15:58:09Z", "ms": 1947859088919.519 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-22T01:18:57+08:00", "utc": "2031-09-21T17:18:57Z", "ms": 1947777536959.6353 }, "end": { "local": "2031-09-22T23:58:09+08:00", "utc": "2031-09-22T15:58:09Z", "ms": 1947859088919.519 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-22", "window": { "start": { "local": "2031-09-22T11:31:29+08:00", "utc": "2031-09-22T03:31:29Z", "ms": 1947814289296.8035 }, "end": { "local": "2031-09-22T12:19:29+08:00", "utc": "2031-09-22T04:19:29Z", "ms": 1947817169296.8035 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-09-23", "window": { "start": { "local": "2031-09-23T11:31:08+08:00", "utc": "2031-09-23T03:31:08Z", "ms": 1947900668172.7202 }, "end": { "local": "2031-09-23T12:19:08+08:00", "utc": "2031-09-23T04:19:08Z", "ms": 1947903548172.7202 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:19 on Mon 22 Sep to 23:58 on Mon 22 Sep.", "fact": "2031-09-21T17:18:57Z → 2031-09-22T15:58:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 22nd, 11:31–12:19 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "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 36752 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Fuzhou, 2031: Monday 22 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": "2031-09-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Sūrya Ṣaṣṭhī (Bhādrapada) 2031 falls on Monday 22 September. Ṣaṣṭhī runs from 01:19 on Mon 22 Sep to 23:58 on Mon 22 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35896, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-09-22T23:58:09+08:00", "utc": "2031-09-22T15:58:09Z", "ms": 1947859088919.519 }, "end": { "local": "2031-09-23T22:17:24+08:00", "utc": "2031-09-23T14:17:24Z", "ms": 1947939444342.753 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-22T23:58:09+08:00", "utc": "2031-09-22T15:58:09Z", "ms": 1947859088919.519 }, "end": { "local": "2031-09-23T22:17:24+08:00", "utc": "2031-09-23T14:17:24Z", "ms": 1947939444342.753 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-22", "window": { "start": { "local": "2031-09-22T11:31:29+08:00", "utc": "2031-09-22T03:31:29Z", "ms": 1947814289296.8035 }, "end": { "local": "2031-09-22T12:19:29+08:00", "utc": "2031-09-22T04:19:29Z", "ms": 1947817169296.8035 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-09-23", "window": { "start": { "local": "2031-09-23T11:31:08+08:00", "utc": "2031-09-23T03:31:08Z", "ms": 1947900668172.7202 }, "end": { "local": "2031-09-23T12:19:08+08:00", "utc": "2031-09-23T04:19:08Z", "ms": 1947903548172.7202 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 23:58 on Mon 22 Sep to 22:17 on Tue 23 Sep.", "fact": "2031-09-22T15:58:09Z → 2031-09-23T14:17:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 22nd, 11:31–12:19 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 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 35896 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Fuzhou, 2031: Tuesday 23 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": "2031-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Muktābharaṇa Vrata 2031 falls on Tuesday 23 September. Saptamī runs from 23:58 on Mon 22 Sep to 22:17 on Tue 23 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28729, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-09-23T22:17:24+08:00", "utc": "2031-09-23T14:17:24Z", "ms": 1947939444342.753 }, "end": { "local": "2031-09-24T20:17:36+08:00", "utc": "2031-09-24T12:17:36Z", "ms": 1948018656341.1025 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-23T22:17:24+08:00", "utc": "2031-09-23T14:17:24Z", "ms": 1947939444342.753 }, "end": { "local": "2031-09-24T20:17:36+08:00", "utc": "2031-09-24T12:17:36Z", "ms": 1948018656341.1025 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-23", "window": { "start": { "local": "2031-09-23T11:31:08+08:00", "utc": "2031-09-23T03:31:08Z", "ms": 1947900668172.7202 }, "end": { "local": "2031-09-23T12:19:08+08:00", "utc": "2031-09-23T04:19:08Z", "ms": 1947903548172.7202 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-09-24", "window": { "start": { "local": "2031-09-24T11:30:47+08:00", "utc": "2031-09-24T03:30:47Z", "ms": 1947987047150.3774 }, "end": { "local": "2031-09-24T12:18:47+08:00", "utc": "2031-09-24T04:18:47Z", "ms": 1947989927150.3774 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 22:17 on Tue 23 Sep to 20:18 on Wed 24 Sep.", "fact": "2031-09-23T14:17:24Z → 2031-09-24T12:17:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 23rd, 11:31–12:19 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28729 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Fuzhou, 2031: Wednesday 24 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": "2031-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Rādhāṣṭamī 2031 falls on Wednesday 24 September. Aṣṭamī runs from 22:17 on Tue 23 Sep to 20:18 on Wed 24 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-09-27", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25001, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-09-26T15:29:54+08:00", "utc": "2031-09-26T07:29:54Z", "ms": 1948174194042.333 }, "end": { "local": "2031-09-27T12:50:03+08:00", "utc": "2031-09-27T04:50:03Z", "ms": 1948251002626.8894 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-26T15:29:54+08:00", "utc": "2031-09-26T07:29:54Z", "ms": 1948174194042.333 }, "end": { "local": "2031-09-27T12:50:03+08:00", "utc": "2031-09-27T04:50:03Z", "ms": 1948251002626.8894 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-09-26", "window": { "start": { "local": "2031-09-26T05:52:57+08:00", "utc": "2031-09-25T21:52:57Z", "ms": 1948139576505.273 }, "end": { "local": "2031-09-26T05:52:57+08:00", "utc": "2031-09-25T21:52:57Z", "ms": 1948139576505.273 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-09-27", "window": { "start": { "local": "2031-09-27T05:53:22+08:00", "utc": "2031-09-26T21:53:22Z", "ms": 1948226001514.72 }, "end": { "local": "2031-09-27T05:53:22+08:00", "utc": "2031-09-26T21:53:22Z", "ms": 1948226001514.72 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:30 on Fri 26 Sep to 12:50 on Sat 27 Sep.", "fact": "2031-09-26T07:29:54Z → 2031-09-27T04:50:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:53 on the 26th and 05:53 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25001 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Fuzhou, 2031: Saturday 27 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Parivartanī Ekādaśī 2031 falls on Saturday 27 September. Ekādaśī runs from 15:30 on Fri 26 Sep to 12:50 on Sat 27 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-09-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1938, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-09-27T12:50:03+08:00", "utc": "2031-09-27T04:50:03Z", "ms": 1948251002626.8894 }, "end": { "local": "2031-09-28T10:07:16+08:00", "utc": "2031-09-28T02:07:16Z", "ms": 1948327635502.0693 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-27T12:50:03+08:00", "utc": "2031-09-27T04:50:03Z", "ms": 1948251002626.8894 }, "end": { "local": "2031-09-28T10:07:16+08:00", "utc": "2031-09-28T02:07:16Z", "ms": 1948327635502.0693 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-09-27", "window": { "start": { "local": "2031-09-27T11:29:45+08:00", "utc": "2031-09-27T03:29:45Z", "ms": 1948246184894.7927 }, "end": { "local": "2031-09-27T12:17:45+08:00", "utc": "2031-09-27T04:17:45Z", "ms": 1948249064894.7927 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-09-28", "window": { "start": { "local": "2031-09-28T11:29:24+08:00", "utc": "2031-09-28T03:29:24Z", "ms": 1948332564486.0366 }, "end": { "local": "2031-09-28T12:17:24+08:00", "utc": "2031-09-28T04:17:24Z", "ms": 1948335444486.0366 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:50 on Sat 27 Sep to 10:07 on Sun 28 Sep.", "fact": "2031-09-27T04:50:03Z → 2031-09-28T02:07:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 27th, 11:29–12:17 on the 28th.", "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 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 1938 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Fuzhou, 2031: Sunday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vamana-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Vāmana Jayantī 2031 falls on Sunday 28 September. Dvādaśī runs from 12:50 on Sat 27 Sep to 10:07 on Sun 28 Sep, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-09-28", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27947, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-09-28T10:07:16+08:00", "utc": "2031-09-28T02:07:16Z", "ms": 1948327635502.0693 }, "end": { "local": "2031-09-29T07:28:51+08:00", "utc": "2031-09-28T23:28:51Z", "ms": 1948404531056.6953 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-28T10:07:16+08:00", "utc": "2031-09-28T02:07:16Z", "ms": 1948327635502.0693 }, "end": { "local": "2031-09-29T07:28:51+08:00", "utc": "2031-09-28T23:28:51Z", "ms": 1948404531056.6953 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-09-28", "window": { "start": { "local": "2031-09-28T17:53:02+08:00", "utc": "2031-09-28T09:53:02Z", "ms": 1948355582281.5112 }, "end": { "local": "2031-09-28T19:29:12+08:00", "utc": "2031-09-28T11:29:12Z", "ms": 1948361351584.0837 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "2031-09-29", "window": { "start": { "local": "2031-09-29T17:51:57+08:00", "utc": "2031-09-29T09:51:57Z", "ms": 1948441916524.876 }, "end": { "local": "2031-09-29T19:28:18+08:00", "utc": "2031-09-29T11:28:18Z", "ms": 1948447698003.4778 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:07 on Sun 28 Sep to 07:29 on Mon 29 Sep.", "fact": "2031-09-28T02:07:16Z → 2031-09-28T23:28:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:53–19:29 on the 28th, 17:52–19:28 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 96 of 96 minutes on the 28th and 0 of 96 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 27947 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Sunday 28 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": "2031-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Sunday 28 September. Trayodaśī runs from 10:07 on Sun 28 Sep to 07:29 on Mon 29 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-09-28", "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/2031/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-09-29", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2934, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-09-29T07:28:51+08:00", "utc": "2031-09-28T23:28:51Z", "ms": 1948404531056.6953 }, "end": { "local": "2031-09-30T05:02:55+08:00", "utc": "2031-09-29T21:02:55Z", "ms": 1948482175160.6218 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2031-09-29T07:28:51+08:00", "utc": "2031-09-28T23:28:51Z", "ms": 1948404531056.6953 }, "end": { "local": "2031-09-30T05:02:55+08:00", "utc": "2031-09-29T21:02:55Z", "ms": 1948482175160.6218 } }, "kaala": "udaya-3", "days": [ { "local_date": "2031-09-29", "window": { "start": { "local": "2031-09-29T05:54:12+08:00", "utc": "2031-09-28T21:54:12Z", "ms": 1948398852050.806 }, "end": { "local": "2031-09-29T08:17:45+08:00", "utc": "2031-09-29T00:17:45Z", "ms": 1948407464945.6199 } }, "covered_min": 49, "window_min": 144, "qualifies": false }, { "local_date": "2031-09-30", "window": { "start": { "local": "2031-09-30T05:54:38+08:00", "utc": "2031-09-29T21:54:38Z", "ms": 1948485277614.3892 }, "end": { "local": "2031-09-30T08:17:52+08:00", "utc": "2031-09-30T00:17:52Z", "ms": 1948493872298.5667 } }, "covered_min": 0, "window_min": 143, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:29 on Mon 29 Sep to 05:03 on Tue 30 Sep.", "fact": "2031-09-28T23:28:51Z → 2031-09-29T21:02:55Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:54–08:18 on the 29th, 05:55–08:18 on the 30th.", "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 49 of 144 minutes on the 29th and 0 of 143 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2934 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Fuzhou, 2031: Monday 29 September.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2031-09-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-09-29", "confidence": "boundary" } ], "quote": "In Fuzhou, Ananta Caturdaśī 2031 falls on Monday 29 September. Caturdaśī runs from 07:29 on Mon 29 Sep to 05:03 on Tue 30 Sep, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-10-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15358, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-10-04T00:04:02+08:00", "utc": "2031-10-03T16:04:02Z", "ms": 1948809841657.2417 }, "end": { "local": "2031-10-05T00:29:55+08:00", "utc": "2031-10-04T16:29:55Z", "ms": 1948897794901.5498 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-04T00:04:02+08:00", "utc": "2031-10-03T16:04:02Z", "ms": 1948809841657.2417 }, "end": { "local": "2031-10-05T00:29:55+08:00", "utc": "2031-10-04T16:29:55Z", "ms": 1948897794901.5498 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-10-03", "window": { "start": { "local": "2031-10-03T19:28:14+08:00", "utc": "2031-10-03T11:28:14Z", "ms": 1948793294109.125 }, "end": { "local": "2031-10-03T19:28:14+08:00", "utc": "2031-10-03T11:28:14Z", "ms": 1948793294109.125 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-10-04", "window": { "start": { "local": "2031-10-04T20:13:56+08:00", "utc": "2031-10-04T12:13:56Z", "ms": 1948882436416.506 }, "end": { "local": "2031-10-04T20:13:56+08:00", "utc": "2031-10-04T12:13:56Z", "ms": 1948882436416.506 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:04 on Sat 4 Oct to 00:30 on Sun 5 Oct.", "fact": "2031-10-03T16:04:02Z → 2031-10-04T16:29:55Z" }, { "step": "kaala", "text": "Moonrise is at 19:28 on the 3rd and 20:14 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15358 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Saturday 4 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": "2031-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-04", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Saturday 4 October. Caturthī runs from 00:04 on Sat 4 Oct to 00:30 on Sun 5 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-10-04", "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/2031/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16619, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-10-06T01:38:34+08:00", "utc": "2031-10-05T17:38:34Z", "ms": 1948988314359.1152 }, "end": { "local": "2031-10-07T03:24:23+08:00", "utc": "2031-10-06T19:24:23Z", "ms": 1949081062723.9963 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-06T01:38:34+08:00", "utc": "2031-10-05T17:38:34Z", "ms": 1948988314359.1152 }, "end": { "local": "2031-10-07T03:24:23+08:00", "utc": "2031-10-06T19:24:23Z", "ms": 1949081062723.9963 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-10-05", "window": { "start": { "local": "2031-10-05T21:01:36+08:00", "utc": "2031-10-05T13:01:36Z", "ms": 1948971695756.0044 }, "end": { "local": "2031-10-05T21:01:36+08:00", "utc": "2031-10-05T13:01:36Z", "ms": 1948971695756.0044 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-10-06", "window": { "start": { "local": "2031-10-06T21:50:54+08:00", "utc": "2031-10-06T13:50:54Z", "ms": 1949061053658.913 }, "end": { "local": "2031-10-06T21:50:54+08:00", "utc": "2031-10-06T13:50:54Z", "ms": 1949061053658.913 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:39 on Mon 6 Oct to 03:24 on Tue 7 Oct.", "fact": "2031-10-05T17:38:34Z → 2031-10-06T19:24:23Z" }, { "step": "kaala", "text": "Moonrise is at 21:02 on the 5th and 21:51 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16619 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Fuzhou, 2031: Monday 6 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-06", "confidence": "determinate" } ], "quote": "In Fuzhou, Candra Ṣaṣṭhī 2031 falls on Monday 6 October. Ṣaṣṭhī runs from 01:39 on Mon 6 Oct to 03:24 on Tue 7 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34590, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-10-08T05:37:29+08:00", "utc": "2031-10-07T21:37:29Z", "ms": 1949175448682.266 }, "end": { "local": "2031-10-09T08:04:49+08:00", "utc": "2031-10-09T00:04:49Z", "ms": 1949270689038.423 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-08T05:37:29+08:00", "utc": "2031-10-07T21:37:29Z", "ms": 1949175448682.266 }, "end": { "local": "2031-10-09T08:04:49+08:00", "utc": "2031-10-09T00:04:49Z", "ms": 1949270689038.423 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-10-08", "window": { "start": { "local": "2031-10-08T17:42:20+08:00", "utc": "2031-10-08T09:42:20Z", "ms": 1949218940370.7798 }, "end": { "local": "2031-10-08T19:20:31+08:00", "utc": "2031-10-08T11:20:31Z", "ms": 1949224830964.1912 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "2031-10-09", "window": { "start": { "local": "2031-10-09T17:41:19+08:00", "utc": "2031-10-09T09:41:19Z", "ms": 1949305278635.9443 }, "end": { "local": "2031-10-09T19:19:41+08:00", "utc": "2031-10-09T11:19:41Z", "ms": 1949311181266.0637 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:37 on Wed 8 Oct to 08:05 on Thu 9 Oct.", "fact": "2031-10-07T21:37:29Z → 2031-10-09T00:04:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:42–19:21 on the 8th, 17:41–19:20 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 98 of 98 minutes on the 8th and 0 of 98 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 34590 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Fuzhou, 2031: Wednesday 8 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": "2031-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Jitāṣṭamī (Jitiya) 2031 falls on Wednesday 8 October. Aṣṭamī runs from 05:37 on Wed 8 Oct to 08:05 on Thu 9 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24968, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-10-08T05:37:29+08:00", "utc": "2031-10-07T21:37:29Z", "ms": 1949175448682.266 }, "end": { "local": "2031-10-09T08:04:49+08:00", "utc": "2031-10-09T00:04:49Z", "ms": 1949270689038.423 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-08T05:37:29+08:00", "utc": "2031-10-07T21:37:29Z", "ms": 1949175448682.266 }, "end": { "local": "2031-10-09T08:04:49+08:00", "utc": "2031-10-09T00:04:49Z", "ms": 1949270689038.423 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-10-07", "window": { "start": { "local": "2031-10-07T22:41:21+08:00", "utc": "2031-10-07T14:41:21Z", "ms": 1949150480818.1914 }, "end": { "local": "2031-10-07T22:41:21+08:00", "utc": "2031-10-07T14:41:21Z", "ms": 1949150480818.1914 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-10-08", "window": { "start": { "local": "2031-10-08T23:32:27+08:00", "utc": "2031-10-08T15:32:27Z", "ms": 1949239947052.9194 }, "end": { "local": "2031-10-08T23:32:27+08:00", "utc": "2031-10-08T15:32:27Z", "ms": 1949239947052.9194 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:37 on Wed 8 Oct to 08:05 on Thu 9 Oct.", "fact": "2031-10-07T21:37:29Z → 2031-10-09T00:04:49Z" }, { "step": "kaala", "text": "Moonrise is at 22:41 on the 7th and 23:32 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24968 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Fuzhou, 2031: Wednesday 8 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": "2031-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-08", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahālakṣmī Vrata Samāpana 2031 falls on Wednesday 8 October. Aṣṭamī runs from 05:37 on Wed 8 Oct to 08:05 on Thu 9 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-10-12", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24355, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-10-11T12:45:32+08:00", "utc": "2031-10-11T04:45:32Z", "ms": 1949460332202.4734 }, "end": { "local": "2031-10-12T14:34:37+08:00", "utc": "2031-10-12T06:34:37Z", "ms": 1949553277020.6414 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-11T12:45:32+08:00", "utc": "2031-10-11T04:45:32Z", "ms": 1949460332202.4734 }, "end": { "local": "2031-10-12T14:34:37+08:00", "utc": "2031-10-12T06:34:37Z", "ms": 1949553277020.6414 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-10-11", "window": { "start": { "local": "2031-10-11T05:59:37+08:00", "utc": "2031-10-10T21:59:37Z", "ms": 1949435977272.9746 }, "end": { "local": "2031-10-11T05:59:37+08:00", "utc": "2031-10-10T21:59:37Z", "ms": 1949435977272.9746 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-10-12", "window": { "start": { "local": "2031-10-12T06:00:07+08:00", "utc": "2031-10-11T22:00:07Z", "ms": 1949522406564.2378 }, "end": { "local": "2031-10-12T06:00:07+08:00", "utc": "2031-10-11T22:00:07Z", "ms": 1949522406564.2378 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:46 on Sat 11 Oct to 14:35 on Sun 12 Oct.", "fact": "2031-10-11T04:45:32Z → 2031-10-12T06:34:37Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 11th and 06:00 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 24355 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Fuzhou, 2031: Sunday 12 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": "2031-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Indirā Ekādaśī 2031 falls on Sunday 12 October. Ekādaśī runs from 12:46 on Sat 11 Oct to 14:35 on Sun 12 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-10-12", "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/2031/pradosha-vrata?on=2031-10-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3661, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-10-13T15:52:15+08:00", "utc": "2031-10-13T07:52:15Z", "ms": 1949644334650.385 }, "end": { "local": "2031-10-14T16:35:18+08:00", "utc": "2031-10-14T08:35:18Z", "ms": 1949733317744.7402 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-13T15:52:15+08:00", "utc": "2031-10-13T07:52:15Z", "ms": 1949644334650.385 }, "end": { "local": "2031-10-14T16:35:18+08:00", "utc": "2031-10-14T08:35:18Z", "ms": 1949733317744.7402 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-10-13", "window": { "start": { "local": "2031-10-13T17:37:18+08:00", "utc": "2031-10-13T09:37:18Z", "ms": 1949650637571.0146 }, "end": { "local": "2031-10-13T19:16:28+08:00", "utc": "2031-10-13T11:16:28Z", "ms": 1949656588070.8909 } }, "covered_min": 99, "window_min": 99, "qualifies": true }, { "local_date": "2031-10-14", "window": { "start": { "local": "2031-10-14T17:36:19+08:00", "utc": "2031-10-14T09:36:19Z", "ms": 1949736978905.343 }, "end": { "local": "2031-10-14T19:15:41+08:00", "utc": "2031-10-14T11:15:41Z", "ms": 1949742941291.0972 } }, "covered_min": 0, "window_min": 99, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:52 on Mon 13 Oct to 16:35 on Tue 14 Oct.", "fact": "2031-10-13T07:52:15Z → 2031-10-14T08:35:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:16 on the 13th, 17:36–19:16 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 99 of 99 minutes on the 13th and 0 of 99 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 3661 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Monday 13 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": "2031-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Monday 13 October. Trayodaśī runs from 15:52 on Mon 13 Oct to 16:35 on Tue 14 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-10-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/shivaratri?on=2031-10-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24047, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-10-14T16:35:18+08:00", "utc": "2031-10-14T08:35:18Z", "ms": 1949733317744.7402 }, "end": { "local": "2031-10-15T16:43:57+08:00", "utc": "2031-10-15T08:43:57Z", "ms": 1949820236864.7747 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-14T16:35:18+08:00", "utc": "2031-10-14T08:35:18Z", "ms": 1949733317744.7402 }, "end": { "local": "2031-10-15T16:43:57+08:00", "utc": "2031-10-15T08:43:57Z", "ms": 1949820236864.7747 } }, "kaala": "nishita", "days": [ { "local_date": "2031-10-14", "window": { "start": { "local": "2031-10-14T23:24:58+08:00", "utc": "2031-10-14T15:24:58Z", "ms": 1949757897851.921 }, "end": { "local": "2031-10-15T00:12:58+08:00", "utc": "2031-10-14T16:12:58Z", "ms": 1949760777851.921 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-10-15", "window": { "start": { "local": "2031-10-15T23:24:44+08:00", "utc": "2031-10-15T15:24:44Z", "ms": 1949844284307.6365 }, "end": { "local": "2031-10-16T00:12:44+08:00", "utc": "2031-10-15T16:12:44Z", "ms": 1949847164307.6365 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:35 on Tue 14 Oct to 16:44 on Wed 15 Oct.", "fact": "2031-10-14T08:35:18Z → 2031-10-15T08:43:57Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 14th, 23:25–00:13 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 24047 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Tuesday 14 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": "2031-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Tuesday 14 October. Caturdaśī runs from 16:35 on Tue 14 Oct to 16:44 on Wed 15 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3889, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2031-10-15T16:43:57+08:00", "utc": "2031-10-15T08:43:57Z", "ms": 1949820236864.7747 }, "end": { "local": "2031-10-16T16:20:45+08:00", "utc": "2031-10-16T08:20:45Z", "ms": 1949905245225.209 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-15T16:43:57+08:00", "utc": "2031-10-15T08:43:57Z", "ms": 1949820236864.7747 }, "end": { "local": "2031-10-16T16:20:45+08:00", "utc": "2031-10-16T08:20:45Z", "ms": 1949905245225.209 } }, "kaala": "aparahna", "days": [ { "local_date": "2031-10-15", "window": { "start": { "local": "2031-10-15T12:57:51+08:00", "utc": "2031-10-15T04:57:51Z", "ms": 1949806671277.8115 }, "end": { "local": "2031-10-15T15:16:36+08:00", "utc": "2031-10-15T07:16:36Z", "ms": 1949814996104.249 } }, "covered_min": 0, "window_min": 139, "qualifies": false }, { "local_date": "2031-10-16", "window": { "start": { "local": "2031-10-16T12:57:29+08:00", "utc": "2031-10-16T04:57:29Z", "ms": 1949893049276.6367 }, "end": { "local": "2031-10-16T15:15:56+08:00", "utc": "2031-10-16T07:15:56Z", "ms": 1949901356473.9868 } }, "covered_min": 138, "window_min": 138, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 16:44 on Wed 15 Oct to 16:21 on Thu 16 Oct.", "fact": "2031-10-15T08:43:57Z → 2031-10-16T08:20:45Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 12:58–15:17 on the 15th, 12:57–15:16 on the 16th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 139 minutes on the 15th and 138 of 138 on the 16th.", "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 3889 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Fuzhou, 2031: Thursday 16 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": "2031-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahālaya Amāvāsyā 2031 falls on Thursday 16 October. Amāvasyā runs from 16:44 on Wed 15 Oct to 16:21 on Thu 16 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11858, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-10-16T16:20:45+08:00", "utc": "2031-10-16T08:20:45Z", "ms": 1949905245225.209 }, "end": { "local": "2031-10-17T15:29:41+08:00", "utc": "2031-10-17T07:29:41Z", "ms": 1949988581440.2646 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-16T16:20:45+08:00", "utc": "2031-10-16T08:20:45Z", "ms": 1949905245225.209 }, "end": { "local": "2031-10-17T15:29:41+08:00", "utc": "2031-10-17T07:29:41Z", "ms": 1949988581440.2646 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-10-16", "window": { "start": { "local": "2031-10-16T11:24:16+08:00", "utc": "2031-10-16T03:24:16Z", "ms": 1949887455677.9614 }, "end": { "local": "2031-10-16T12:12:16+08:00", "utc": "2031-10-16T04:12:16Z", "ms": 1949890335677.9614 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-10-17", "window": { "start": { "local": "2031-10-17T11:24:03+08:00", "utc": "2031-10-17T03:24:03Z", "ms": 1949973843066.7373 }, "end": { "local": "2031-10-17T12:12:03+08:00", "utc": "2031-10-17T04:12:03Z", "ms": 1949976723066.7373 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:21 on Thu 16 Oct to 15:30 on Fri 17 Oct.", "fact": "2031-10-16T08:20:45Z → 2031-10-17T07:29:41Z" }, { "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": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11858 s" }, { "step": "ruling", "text": "Navarātrārambha, Fuzhou, 2031: Friday 17 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Navarātrārambha (Navratri) 2031 falls on Friday 17 October. Pratipadā runs from 16:21 on Thu 16 Oct to 15:30 on Fri 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-10-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1711, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-10-19T12:42:21+08:00", "utc": "2031-10-19T04:42:21Z", "ms": 1950151340938.0737 }, "end": { "local": "2031-10-20T10:54:58+08:00", "utc": "2031-10-20T02:54:58Z", "ms": 1950231297861.7065 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-19T12:42:21+08:00", "utc": "2031-10-19T04:42:21Z", "ms": 1950151340938.0737 }, "end": { "local": "2031-10-20T10:54:58+08:00", "utc": "2031-10-20T02:54:58Z", "ms": 1950231297861.7065 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-10-19", "window": { "start": { "local": "2031-10-19T11:23:40+08:00", "utc": "2031-10-19T03:23:40Z", "ms": 1950146619622.777 }, "end": { "local": "2031-10-19T12:11:40+08:00", "utc": "2031-10-19T04:11:40Z", "ms": 1950149499622.777 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-10-20", "window": { "start": { "local": "2031-10-20T11:23:29+08:00", "utc": "2031-10-20T03:23:29Z", "ms": 1950233008815.1694 }, "end": { "local": "2031-10-20T12:11:29+08:00", "utc": "2031-10-20T04:11:29Z", "ms": 1950235888815.1694 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:42 on Sun 19 Oct to 10:55 on Mon 20 Oct.", "fact": "2031-10-19T04:42:21Z → 2031-10-20T02:54:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 19th, 11:23–12:11 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 1711 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Monday 20 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-20", "confidence": "boundary" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Monday 20 October. Caturthī runs from 12:42 on Sun 19 Oct to 10:55 on Mon 20 Oct, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-22", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 45, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-10-22T06:51:41+08:00", "utc": "2031-10-21T22:51:41Z", "ms": 1950389501067.8723 }, "end": { "local": "2031-10-23T04:42:03+08:00", "utc": "2031-10-22T20:42:03Z", "ms": 1950468122574.8809 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-22T06:51:41+08:00", "utc": "2031-10-21T22:51:41Z", "ms": 1950389501067.8723 }, "end": { "local": "2031-10-23T04:42:03+08:00", "utc": "2031-10-22T20:42:03Z", "ms": 1950468122574.8809 } }, "kaala": "udaya-1", "days": [ { "local_date": "2031-10-22", "window": { "start": { "local": "2031-10-22T06:05:22+08:00", "utc": "2031-10-21T22:05:22Z", "ms": 1950386721728.7415 }, "end": { "local": "2031-10-22T06:50:56+08:00", "utc": "2031-10-21T22:50:56Z", "ms": 1950389456043.7773 } }, "covered_min": 0, "window_min": 46, "qualifies": false }, { "local_date": "2031-10-23", "window": { "start": { "local": "2031-10-23T06:05:56+08:00", "utc": "2031-10-22T22:05:56Z", "ms": 1950473155539.1719 }, "end": { "local": "2031-10-23T06:51:24+08:00", "utc": "2031-10-22T22:51:24Z", "ms": 1950475884160.8438 } }, "covered_min": 0, "window_min": 45, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 06:52 on Wed 22 Oct to 04:42 on Thu 23 Oct.", "fact": "2031-10-21T22:51:41Z → 2031-10-22T20:42:03Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:05–06:51 on the 22nd, 06:06–06:51 on the 23rd.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 46 minutes on the 22nd and 0 of 45 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 45 s < 300 s" }, { "step": "ruling", "text": "Durgā Saptamī, Fuzhou, 2031: Wednesday 22 October.", "fact": "confidence: boundary (margin, absent-unstated)" } ], "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": "2031-10-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-22", "confidence": "boundary" } ], "quote": "In Fuzhou, Durgā Saptamī 2031 falls on Wednesday 22 October. Saptamī runs from 06:52 on Wed 22 Oct to 04:42 on Thu 23 Oct, and reaches the first muhūrta after sunrise on neither day. It is 0 min 45 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24058, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-10-23T04:42:03+08:00", "utc": "2031-10-22T20:42:03Z", "ms": 1950468122574.8809 }, "end": { "local": "2031-10-24T02:30:53+08:00", "utc": "2031-10-23T18:30:53Z", "ms": 1950546653474.9336 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-23T04:42:03+08:00", "utc": "2031-10-22T20:42:03Z", "ms": 1950468122574.8809 }, "end": { "local": "2031-10-24T02:30:53+08:00", "utc": "2031-10-23T18:30:53Z", "ms": 1950546653474.9336 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-10-23", "window": { "start": { "local": "2031-10-23T11:23:00+08:00", "utc": "2031-10-23T03:23:00Z", "ms": 1950492180201.7102 }, "end": { "local": "2031-10-23T12:11:00+08:00", "utc": "2031-10-23T04:11:00Z", "ms": 1950495060201.7102 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-10-24", "window": { "start": { "local": "2031-10-24T11:22:52+08:00", "utc": "2031-10-24T03:22:52Z", "ms": 1950578571978.4956 }, "end": { "local": "2031-10-24T12:10:52+08:00", "utc": "2031-10-24T04:10:52Z", "ms": 1950581451978.4956 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 04:42 on Thu 23 Oct to 02:31 on Fri 24 Oct.", "fact": "2031-10-22T20:42:03Z → 2031-10-23T18:30:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 23rd, 11:23–12:11 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24058 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Fuzhou, 2031: Thursday 23 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": "2031-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-23", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahāṣṭamī (Durga Ashtami) 2031 falls on Thursday 23 October. Aṣṭamī runs from 04:42 on Thu 23 Oct to 02:31 on Fri 24 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31919, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2031-10-24T02:30:53+08:00", "utc": "2031-10-23T18:30:53Z", "ms": 1950546653474.9336 }, "end": { "local": "2031-10-25T00:21:12+08:00", "utc": "2031-10-24T16:21:12Z", "ms": 1950625271901.4724 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-24T02:30:53+08:00", "utc": "2031-10-23T18:30:53Z", "ms": 1950546653474.9336 }, "end": { "local": "2031-10-25T00:21:12+08:00", "utc": "2031-10-24T16:21:12Z", "ms": 1950625271901.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-10-24", "window": { "start": { "local": "2031-10-24T11:22:52+08:00", "utc": "2031-10-24T03:22:52Z", "ms": 1950578571978.4956 }, "end": { "local": "2031-10-24T12:10:52+08:00", "utc": "2031-10-24T04:10:52Z", "ms": 1950581451978.4956 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-10-25", "window": { "start": { "local": "2031-10-25T11:22:44+08:00", "utc": "2031-10-25T03:22:44Z", "ms": 1950664964436.6958 }, "end": { "local": "2031-10-25T12:10:44+08:00", "utc": "2031-10-25T04:10:44Z", "ms": 1950667844436.6958 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 02:31 on Fri 24 Oct to 00:21 on Sat 25 Oct.", "fact": "2031-10-23T18:30:53Z → 2031-10-24T16:21:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 24th, 11:23–12:11 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31919 s" }, { "step": "ruling", "text": "Mahānavamī, Fuzhou, 2031: Friday 24 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": "2031-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Mahānavamī 2031 falls on Friday 24 October. Navamī runs from 02:31 on Fri 24 Oct to 00:21 on Sat 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24838, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2031-10-25T00:21:12+08:00", "utc": "2031-10-24T16:21:12Z", "ms": 1950625271901.4724 }, "end": { "local": "2031-10-25T22:16:17+08:00", "utc": "2031-10-25T14:16:17Z", "ms": 1950704176948.1838 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-25T00:21:12+08:00", "utc": "2031-10-24T16:21:12Z", "ms": 1950625271901.4724 }, "end": { "local": "2031-10-25T22:16:17+08:00", "utc": "2031-10-25T14:16:17Z", "ms": 1950704176948.1838 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-10-24", "window": { "start": { "local": "2031-10-24T11:22:52+08:00", "utc": "2031-10-24T03:22:52Z", "ms": 1950578571978.4956 }, "end": { "local": "2031-10-24T12:10:52+08:00", "utc": "2031-10-24T04:10:52Z", "ms": 1950581451978.4956 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-10-25", "window": { "start": { "local": "2031-10-25T11:22:44+08:00", "utc": "2031-10-25T03:22:44Z", "ms": 1950664964436.6958 }, "end": { "local": "2031-10-25T12:10:44+08:00", "utc": "2031-10-25T04:10:44Z", "ms": 1950667844436.6958 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 00:21 on Sat 25 Oct to 22:16 on Sat 25 Oct.", "fact": "2031-10-24T16:21:12Z → 2031-10-25T14:16:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 24th, 11:23–12:11 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24838 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Fuzhou, 2031: Saturday 25 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": "2031-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Vijayā Daśamī (Dussehra) 2031 falls on Saturday 25 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 00:21 on Sat 25 Oct to 22:16 on Sat 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-10-26", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28283, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-10-25T22:16:17+08:00", "utc": "2031-10-25T14:16:17Z", "ms": 1950704176948.1838 }, "end": { "local": "2031-10-26T20:19:57+08:00", "utc": "2031-10-26T12:19:57Z", "ms": 1950783597384.6511 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-25T22:16:17+08:00", "utc": "2031-10-25T14:16:17Z", "ms": 1950704176948.1838 }, "end": { "local": "2031-10-26T20:19:57+08:00", "utc": "2031-10-26T12:19:57Z", "ms": 1950783597384.6511 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-10-26", "window": { "start": { "local": "2031-10-26T06:07:40+08:00", "utc": "2031-10-25T22:07:40Z", "ms": 1950732459526.159 }, "end": { "local": "2031-10-26T06:07:40+08:00", "utc": "2031-10-25T22:07:40Z", "ms": 1950732459526.159 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-10-27", "window": { "start": { "local": "2031-10-27T06:08:15+08:00", "utc": "2031-10-26T22:08:15Z", "ms": 1950818895051.1702 }, "end": { "local": "2031-10-27T06:08:15+08:00", "utc": "2031-10-26T22:08:15Z", "ms": 1950818895051.1702 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:16 on Sat 25 Oct to 20:20 on Sun 26 Oct.", "fact": "2031-10-25T14:16:17Z → 2031-10-26T12:19:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:08 on the 26th and 06:08 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 28283 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Fuzhou, 2031: Sunday 26 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": "2031-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Pāśāṅkuśā Ekādaśī 2031 falls on Sunday 26 October. Ekādaśī runs from 22:16 on Sat 25 Oct to 20:20 on Sun 26 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-10-26", "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/2031/pradosha-vrata?on=2031-10-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 787, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-10-27T18:36:34+08:00", "utc": "2031-10-27T10:36:34Z", "ms": 1950863794020.74 }, "end": { "local": "2031-10-28T17:10:55+08:00", "utc": "2031-10-28T09:10:55Z", "ms": 1950945054556.575 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2031-10-27T18:36:34+08:00", "utc": "2031-10-27T10:36:34Z", "ms": 1950863794020.74 }, "end": { "local": "2031-10-28T17:10:55+08:00", "utc": "2031-10-28T09:10:55Z", "ms": 1950945054556.575 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-10-27", "window": { "start": { "local": "2031-10-27T17:24:48+08:00", "utc": "2031-10-27T09:24:48Z", "ms": 1950859487868.6028 }, "end": { "local": "2031-10-27T19:06:40+08:00", "utc": "2031-10-27T11:06:40Z", "ms": 1950865600287.9858 } }, "covered_min": 30, "window_min": 102, "qualifies": true }, { "local_date": "2031-10-28", "window": { "start": { "local": "2031-10-28T17:24:01+08:00", "utc": "2031-10-28T09:24:01Z", "ms": 1950945841100.5186 }, "end": { "local": "2031-10-28T19:06:05+08:00", "utc": "2031-10-28T11:06:05Z", "ms": 1950951964609.5754 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:37 on Mon 27 Oct to 17:11 on Tue 28 Oct.", "fact": "2031-10-27T10:36:34Z → 2031-10-28T09:10:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:25–19:07 on the 27th, 17:24–19:06 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 30 of 102 minutes on the 27th and 0 of 102 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 787 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Monday 27 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": "2031-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-10-27", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Monday 27 October. Trayodaśī runs from 18:37 on Mon 27 Oct to 17:11 on Tue 28 Oct and covers 30 of 102 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-10-27", "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/2031/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6327, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-11-02T17:07:01+08:00", "utc": "2031-11-02T09:07:01Z", "ms": 1951376821113.0518 }, "end": { "local": "2031-11-03T18:46:40+08:00", "utc": "2031-11-03T10:46:40Z", "ms": 1951469199608.8167 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-02T17:07:01+08:00", "utc": "2031-11-02T09:07:01Z", "ms": 1951376821113.0518 }, "end": { "local": "2031-11-03T18:46:40+08:00", "utc": "2031-11-03T10:46:40Z", "ms": 1951469199608.8167 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-11-02", "window": { "start": { "local": "2031-11-02T19:41:34+08:00", "utc": "2031-11-02T11:41:34Z", "ms": 1951386093611.2227 }, "end": { "local": "2031-11-02T19:41:34+08:00", "utc": "2031-11-02T11:41:34Z", "ms": 1951386093611.2227 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-11-03", "window": { "start": { "local": "2031-11-03T20:32:07+08:00", "utc": "2031-11-03T12:32:07Z", "ms": 1951475526995.4436 }, "end": { "local": "2031-11-03T20:32:07+08:00", "utc": "2031-11-03T12:32:07Z", "ms": 1951475526995.4436 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:07 on Sun 2 Nov to 18:47 on Mon 3 Nov.", "fact": "2031-11-02T09:07:01Z → 2031-11-03T10:46:40Z" }, { "step": "kaala", "text": "Moonrise is at 19:42 on the 2nd and 20:32 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. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6327 s" }, { "step": "ruling", "text": "Karaka Caturthī, Fuzhou, 2031: Sunday 2 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Karaka Caturthī (Karwa Chauth) 2031 falls on Sunday 2 November. Caturthī runs from 17:07 on Sun 2 Nov to 18:47 on Mon 3 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-11-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6327, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-11-02T17:07:01+08:00", "utc": "2031-11-02T09:07:01Z", "ms": 1951376821113.0518 }, "end": { "local": "2031-11-03T18:46:40+08:00", "utc": "2031-11-03T10:46:40Z", "ms": 1951469199608.8167 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-02T17:07:01+08:00", "utc": "2031-11-02T09:07:01Z", "ms": 1951376821113.0518 }, "end": { "local": "2031-11-03T18:46:40+08:00", "utc": "2031-11-03T10:46:40Z", "ms": 1951469199608.8167 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-11-02", "window": { "start": { "local": "2031-11-02T19:41:34+08:00", "utc": "2031-11-02T11:41:34Z", "ms": 1951386093611.2227 }, "end": { "local": "2031-11-02T19:41:34+08:00", "utc": "2031-11-02T11:41:34Z", "ms": 1951386093611.2227 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-11-03", "window": { "start": { "local": "2031-11-03T20:32:07+08:00", "utc": "2031-11-03T12:32:07Z", "ms": 1951475526995.4436 }, "end": { "local": "2031-11-03T20:32:07+08:00", "utc": "2031-11-03T12:32:07Z", "ms": 1951475526995.4436 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:07 on Sun 2 Nov to 18:47 on Mon 3 Nov.", "fact": "2031-11-02T09:07:01Z → 2031-11-03T10:46:40Z" }, { "step": "kaala", "text": "Moonrise is at 19:42 on the 2nd and 20:32 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 6327 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Sunday 2 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": "2031-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Sunday 2 November. Caturthī runs from 17:07 on Sun 2 Nov to 18:47 on Mon 3 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-11-02", "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/2031/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9776, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-11-07T01:49:07+08:00", "utc": "2031-11-06T17:49:07Z", "ms": 1951753747345.4177 }, "end": { "local": "2031-11-08T04:11:44+08:00", "utc": "2031-11-07T20:11:44Z", "ms": 1951848703693.0974 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-07T01:49:07+08:00", "utc": "2031-11-06T17:49:07Z", "ms": 1951753747345.4177 }, "end": { "local": "2031-11-08T04:11:44+08:00", "utc": "2031-11-07T20:11:44Z", "ms": 1951848703693.0974 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-11-06", "window": { "start": { "local": "2031-11-06T23:06:11+08:00", "utc": "2031-11-06T15:06:11Z", "ms": 1951743970965.7908 }, "end": { "local": "2031-11-06T23:06:11+08:00", "utc": "2031-11-06T15:06:11Z", "ms": 1951743970965.7908 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-11-07", "window": { "start": { "local": "2031-11-07T23:57:24+08:00", "utc": "2031-11-07T15:57:24Z", "ms": 1951833443970.385 }, "end": { "local": "2031-11-07T23:57:24+08:00", "utc": "2031-11-07T15:57:24Z", "ms": 1951833443970.385 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:49 on Fri 7 Nov to 04:12 on Sat 8 Nov.", "fact": "2031-11-06T17:49:07Z → 2031-11-07T20:11:44Z" }, { "step": "kaala", "text": "Moonrise is at 23:06 on the 6th and 23:57 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 6th and is on the 7th.", "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 9776 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Fuzhou, 2031: Friday 7 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-07", "confidence": "determinate" } ], "quote": "In Fuzhou, Ahoyī Aṣṭamī 2031 falls on Friday 7 November. Aṣṭamī runs from 01:49 on Fri 7 Nov to 04:12 on Sat 8 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-11-11", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5117, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-11-10T07:42:36+08:00", "utc": "2031-11-09T23:42:36Z", "ms": 1952034155500.6082 }, "end": { "local": "2031-11-11T08:32:50+08:00", "utc": "2031-11-11T00:32:50Z", "ms": 1952123569715.0679 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-10T07:42:36+08:00", "utc": "2031-11-09T23:42:36Z", "ms": 1952034155500.6082 }, "end": { "local": "2031-11-11T08:32:50+08:00", "utc": "2031-11-11T00:32:50Z", "ms": 1952123569715.0679 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-11-10", "window": { "start": { "local": "2031-11-10T06:17:19+08:00", "utc": "2031-11-09T22:17:19Z", "ms": 1952029038519.3691 }, "end": { "local": "2031-11-10T06:17:19+08:00", "utc": "2031-11-09T22:17:19Z", "ms": 1952029038519.3691 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-11-11", "window": { "start": { "local": "2031-11-11T06:18:00+08:00", "utc": "2031-11-10T22:18:00Z", "ms": 1952115480431.4812 }, "end": { "local": "2031-11-11T06:18:00+08:00", "utc": "2031-11-10T22:18:00Z", "ms": 1952115480431.4812 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:43 on Mon 10 Nov to 08:33 on Tue 11 Nov.", "fact": "2031-11-09T23:42:36Z → 2031-11-11T00:32:50Z" }, { "step": "kaala", "text": "Sunrise is at 06:17 on the 10th and 06:18 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 5117 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Fuzhou, 2031: Tuesday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Ramā Ekādaśī 2031 falls on Tuesday 11 November. Ekādaśī runs from 07:43 on Mon 10 Nov to 08:33 on Tue 11 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-11-11", "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/2031/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30839, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-11-11T08:32:50+08:00", "utc": "2031-11-11T00:32:50Z", "ms": 1952123569715.0679 }, "end": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-11T08:32:50+08:00", "utc": "2031-11-11T00:32:50Z", "ms": 1952123569715.0679 }, "end": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-11", "window": { "start": { "local": "2031-11-11T17:15:09+08:00", "utc": "2031-11-11T09:15:09Z", "ms": 1952154908948.2202 }, "end": { "local": "2031-11-11T18:59:37+08:00", "utc": "2031-11-11T10:59:37Z", "ms": 1952161177447.272 } }, "covered_min": 104, "window_min": 104, "qualifies": true }, { "local_date": "2031-11-12", "window": { "start": { "local": "2031-11-12T17:14:41+08:00", "utc": "2031-11-12T09:14:41Z", "ms": 1952241280673.7915 }, "end": { "local": "2031-11-12T18:59:19+08:00", "utc": "2031-11-12T10:59:19Z", "ms": 1952247558621.0635 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:33 on Tue 11 Nov to 08:41 on Wed 12 Nov.", "fact": "2031-11-11T00:32:50Z → 2031-11-12T00:40:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–19:00 on the 11th, 17:15–18:59 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 104 of 104 minutes on the 11th and 0 of 105 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30839 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Fuzhou, 2031: Tuesday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-11", "confidence": "determinate" } ], "quote": "In Fuzhou, Govatsa Dvādaśī (Vasu Baras) 2031 falls on Tuesday 11 November. Dvādaśī runs from 08:33 on Tue 11 Nov to 08:41 on Wed 12 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30839, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 }, "end": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 }, "end": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-12", "window": { "start": { "local": "2031-11-12T17:14:41+08:00", "utc": "2031-11-12T09:14:41Z", "ms": 1952241280673.7915 }, "end": { "local": "2031-11-12T18:59:19+08:00", "utc": "2031-11-12T10:59:19Z", "ms": 1952247558621.0635 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T17:14:14+08:00", "utc": "2031-11-13T09:14:14Z", "ms": 1952327653804.4573 }, "end": { "local": "2031-11-13T18:59:01+08:00", "utc": "2031-11-13T10:59:01Z", "ms": 1952333941053.3455 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:41 on Wed 12 Nov to 08:07 on Thu 13 Nov.", "fact": "2031-11-12T00:40:42Z → 2031-11-13T00:06:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:59 on the 12th, 17:14–18:59 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 105 of 105 minutes on the 12th and 0 of 105 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30839 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Fuzhou, 2031: Wednesday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Dīpadāna 2031 falls on Wednesday 12 November. Trayodaśī runs from 08:41 on Wed 12 Nov to 08:07 on Thu 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-11-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30839, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 }, "end": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-12T08:40:42+08:00", "utc": "2031-11-12T00:40:42Z", "ms": 1952210441887.6052 }, "end": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-12", "window": { "start": { "local": "2031-11-12T17:14:41+08:00", "utc": "2031-11-12T09:14:41Z", "ms": 1952241280673.7915 }, "end": { "local": "2031-11-12T18:59:19+08:00", "utc": "2031-11-12T10:59:19Z", "ms": 1952247558621.0635 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T17:14:14+08:00", "utc": "2031-11-13T09:14:14Z", "ms": 1952327653804.4573 }, "end": { "local": "2031-11-13T18:59:01+08:00", "utc": "2031-11-13T10:59:01Z", "ms": 1952333941053.3455 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:41 on Wed 12 Nov to 08:07 on Thu 13 Nov.", "fact": "2031-11-12T00:40:42Z → 2031-11-13T00:06:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:59 on the 12th, 17:14–18:59 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 105 of 105 minutes on the 12th and 0 of 105 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 30839 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Wednesday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Wednesday 12 November. Trayodaśī runs from 08:41 on Wed 12 Nov to 08:07 on Thu 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-11-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/shivaratri?on=2031-11-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24200, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "end": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "end": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 } }, "kaala": "nishita", "days": [ { "local_date": "2031-11-12", "window": { "start": { "local": "2031-11-12T23:23:03+08:00", "utc": "2031-11-12T15:23:03Z", "ms": 1952263382976.0613 }, "end": { "local": "2031-11-13T00:11:03+08:00", "utc": "2031-11-12T16:11:03Z", "ms": 1952266262976.0613 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T23:23:11+08:00", "utc": "2031-11-13T15:23:11Z", "ms": 1952349790987.7876 }, "end": { "local": "2031-11-14T00:11:11+08:00", "utc": "2031-11-13T16:11:11Z", "ms": 1952352670987.7876 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:07 on Thu 13 Nov to 06:55 on Fri 14 Nov.", "fact": "2031-11-13T00:06:45Z → 2031-11-13T22:54:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:23–00:11 on the 12th, 23:23–00:11 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24200 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Thursday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-13", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Thursday 13 November. Caturdaśī runs from 08:07 on Thu 13 Nov to 06:55 on Fri 14 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-11-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2063, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "end": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-13T08:06:45+08:00", "utc": "2031-11-13T00:06:45Z", "ms": 1952294805137.153 }, "end": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 } }, "kaala": "arunodaya", "days": [ { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T04:34:47+08:00", "utc": "2031-11-12T20:34:47Z", "ms": 1952282087331.059 }, "end": { "local": "2031-11-13T06:19:25+08:00", "utc": "2031-11-12T22:19:25Z", "ms": 1952288365278.331 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2031-11-14", "window": { "start": { "local": "2031-11-14T04:35:21+08:00", "utc": "2031-11-13T20:35:21Z", "ms": 1952368520922.2297 }, "end": { "local": "2031-11-14T06:20:08+08:00", "utc": "2031-11-13T22:20:08Z", "ms": 1952374808171.118 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:07 on Thu 13 Nov to 06:55 on Fri 14 Nov.", "fact": "2031-11-13T00:06:45Z → 2031-11-13T22:54:31Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:35–06:19 on the 13th, 04:35–06:20 on the 14th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 105 minutes on the 13th and 105 of 105 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2063 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Fuzhou, 2031: Friday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Naraka Caturdaśī (Choti Diwali) 2031 falls on Friday 14 November. Caturdaśī runs from 08:07 on Thu 13 Nov to 06:55 on Fri 14 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36654, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "end": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "end": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T17:14:14+08:00", "utc": "2031-11-13T09:14:14Z", "ms": 1952327653804.4573 }, "end": { "local": "2031-11-13T18:59:01+08:00", "utc": "2031-11-13T10:59:01Z", "ms": 1952333941053.3455 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2031-11-14", "window": { "start": { "local": "2031-11-14T17:13:48+08:00", "utc": "2031-11-14T09:13:48Z", "ms": 1952414028354.173 }, "end": { "local": "2031-11-14T18:58:45+08:00", "utc": "2031-11-14T10:58:45Z", "ms": 1952420324752.9902 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 06:55 on Fri 14 Nov to 05:10 on Sat 15 Nov.", "fact": "2031-11-13T22:54:31Z → 2031-11-14T21:09:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:59 on the 13th, 17:14–18:59 on the 14th.", "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 105 minutes on the 13th and 105 of 105 on the 14th.", "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 36654 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Fuzhou, 2031: Friday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Lakṣmī Pūjā (Diwali) 2031 falls on Friday 14 November. Amāvasyā runs from 06:55 on Fri 14 Nov to 05:10 on Sat 15 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17899, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "end": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-14T06:54:31+08:00", "utc": "2031-11-13T22:54:31Z", "ms": 1952376871329.0347 }, "end": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 } }, "kaala": "nishita", "days": [ { "local_date": "2031-11-13", "window": { "start": { "local": "2031-11-13T23:23:11+08:00", "utc": "2031-11-13T15:23:11Z", "ms": 1952349790987.7876 }, "end": { "local": "2031-11-14T00:11:11+08:00", "utc": "2031-11-13T16:11:11Z", "ms": 1952352670987.7876 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-14", "window": { "start": { "local": "2031-11-14T23:23:20+08:00", "utc": "2031-11-14T15:23:20Z", "ms": 1952436199849.7373 }, "end": { "local": "2031-11-15T00:11:20+08:00", "utc": "2031-11-14T16:11:20Z", "ms": 1952439079849.7373 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 06:55 on Fri 14 Nov to 05:10 on Sat 15 Nov.", "fact": "2031-11-13T22:54:31Z → 2031-11-14T21:09:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:23–00:11 on the 13th, 23:23–00:11 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17899 s" }, { "step": "ruling", "text": "Kālī Pūjā, Fuzhou, 2031: Friday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-14", "confidence": "determinate" } ], "quote": "In Fuzhou, Kālī Pūjā 2031 falls on Friday 14 November. Amāvasyā runs from 06:55 on Fri 14 Nov to 05:10 on Sat 15 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22409, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-15", "window": { "start": { "local": "2031-11-15T11:23:08+08:00", "utc": "2031-11-15T03:23:08Z", "ms": 1952479387840.2617 }, "end": { "local": "2031-11-15T12:11:08+08:00", "utc": "2031-11-15T04:11:08Z", "ms": 1952482267840.2617 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-11-16", "window": { "start": { "local": "2031-11-16T11:23:18+08:00", "utc": "2031-11-16T03:23:18Z", "ms": 1952565798266.571 }, "end": { "local": "2031-11-16T12:11:18+08:00", "utc": "2031-11-16T04:11:18Z", "ms": 1952568678266.571 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov.", "fact": "2031-11-14T21:09:38Z → 2031-11-15T18:59:02Z" }, { "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": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22409 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Fuzhou, 2031: Saturday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Govardhana Pūjā 2031 falls on Saturday 15 November. Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28832, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-14", "window": { "start": { "local": "2031-11-14T17:13:48+08:00", "utc": "2031-11-14T09:13:48Z", "ms": 1952414028354.173 }, "end": { "local": "2031-11-14T18:58:45+08:00", "utc": "2031-11-14T10:58:45Z", "ms": 1952420324752.9902 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2031-11-15", "window": { "start": { "local": "2031-11-15T17:13:24+08:00", "utc": "2031-11-15T09:13:24Z", "ms": 1952500404335.222 }, "end": { "local": "2031-11-15T18:58:30+08:00", "utc": "2031-11-15T10:58:30Z", "ms": 1952506709727.1487 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov.", "fact": "2031-11-14T21:09:38Z → 2031-11-15T18:59:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:59 on the 14th, 17:13–18:58 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 0 of 105 minutes on the 14th and 105 of 105 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28832 s" }, { "step": "ruling", "text": "Bali Pūjā, Fuzhou, 2031: Saturday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Bali Pūjā 2031 falls on Saturday 15 November. Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4273, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-15T05:09:38+08:00", "utc": "2031-11-14T21:09:38Z", "ms": 1952456978497.8267 }, "end": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 } }, "kaala": "purvahna", "days": [ { "local_date": "2031-11-15", "window": { "start": { "local": "2031-11-15T06:20:51+08:00", "utc": "2031-11-14T22:20:51Z", "ms": 1952461251345.3015 }, "end": { "local": "2031-11-15T09:58:22+08:00", "utc": "2031-11-15T01:58:22Z", "ms": 1952474302341.9417 } }, "covered_min": 218, "window_min": 218, "qualifies": true }, { "local_date": "2031-11-16", "window": { "start": { "local": "2031-11-16T06:21:35+08:00", "utc": "2031-11-15T22:21:35Z", "ms": 1952547694774.672 }, "end": { "local": "2031-11-16T09:58:44+08:00", "utc": "2031-11-16T01:58:44Z", "ms": 1952560723769.2715 } }, "covered_min": 0, "window_min": 217, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov.", "fact": "2031-11-14T21:09:38Z → 2031-11-15T18:59:02Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:21–09:58 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": "Pratipadā must be present during pūrvāhṇa. It covers 218 of 218 minutes on the 15th and 0 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 4273 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Fuzhou, 2031: Saturday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-15", "confidence": "determinate" } ], "quote": "In Fuzhou, Dyūta Pratipad 2031 falls on Saturday 15 November. Pratipadā runs from 05:10 on Sat 15 Nov to 02:59 on Sun 16 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30256, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 }, "end": { "local": "2031-11-17T00:30:15+08:00", "utc": "2031-11-16T16:30:15Z", "ms": 1952613014818.7314 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-16T02:59:02+08:00", "utc": "2031-11-15T18:59:02Z", "ms": 1952535542062.8835 }, "end": { "local": "2031-11-17T00:30:15+08:00", "utc": "2031-11-16T16:30:15Z", "ms": 1952613014818.7314 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-16", "window": { "start": { "local": "2031-11-16T11:23:18+08:00", "utc": "2031-11-16T03:23:18Z", "ms": 1952565798266.571 }, "end": { "local": "2031-11-16T12:11:18+08:00", "utc": "2031-11-16T04:11:18Z", "ms": 1952568678266.571 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-11-17", "window": { "start": { "local": "2031-11-17T11:23:30+08:00", "utc": "2031-11-17T03:23:30Z", "ms": 1952652209532.5198 }, "end": { "local": "2031-11-17T12:11:30+08:00", "utc": "2031-11-17T04:11:30Z", "ms": 1952655089532.5198 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 02:59 on Sun 16 Nov to 00:30 on Mon 17 Nov.", "fact": "2031-11-15T18:59:02Z → 2031-11-16T16:30:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 16th, 11:23–12:11 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30256 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Fuzhou, 2031: Sunday 16 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-16", "confidence": "determinate" } ], "quote": "In Fuzhou, Yama Dvitīyā (Bhai Dooj) 2031 falls on Sunday 16 November. Dvitīyā runs from 02:59 on Sun 16 Nov to 00:30 on Mon 17 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25006, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-11-17T21:50:56+08:00", "utc": "2031-11-17T13:50:56Z", "ms": 1952689856024.8875 }, "end": { "local": "2031-11-18T19:08:28+08:00", "utc": "2031-11-18T11:08:28Z", "ms": 1952766507817.1584 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-17T21:50:56+08:00", "utc": "2031-11-17T13:50:56Z", "ms": 1952689856024.8875 }, "end": { "local": "2031-11-18T19:08:28+08:00", "utc": "2031-11-18T11:08:28Z", "ms": 1952766507817.1584 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-17", "window": { "start": { "local": "2031-11-17T11:23:30+08:00", "utc": "2031-11-17T03:23:30Z", "ms": 1952652209532.5198 }, "end": { "local": "2031-11-17T12:11:30+08:00", "utc": "2031-11-17T04:11:30Z", "ms": 1952655089532.5198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-18", "window": { "start": { "local": "2031-11-18T11:23:42+08:00", "utc": "2031-11-18T03:23:42Z", "ms": 1952738621628.1343 }, "end": { "local": "2031-11-18T12:11:42+08:00", "utc": "2031-11-18T04:11:42Z", "ms": 1952741501628.1343 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:51 on Mon 17 Nov to 19:08 on Tue 18 Nov.", "fact": "2031-11-17T13:50:56Z → 2031-11-18T11:08:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 17th, 11:24–12:12 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25006 s" }, { "step": "ruling", "text": "Nāga Caturthī, Fuzhou, 2031: Tuesday 18 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Caturthī 2031 falls on Tuesday 18 November. Caturthī runs from 21:51 on Mon 17 Nov to 19:08 on Tue 18 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/vinayaka-chaturthi?on=2031-11-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25006, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-11-17T21:50:56+08:00", "utc": "2031-11-17T13:50:56Z", "ms": 1952689856024.8875 }, "end": { "local": "2031-11-18T19:08:28+08:00", "utc": "2031-11-18T11:08:28Z", "ms": 1952766507817.1584 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-17T21:50:56+08:00", "utc": "2031-11-17T13:50:56Z", "ms": 1952689856024.8875 }, "end": { "local": "2031-11-18T19:08:28+08:00", "utc": "2031-11-18T11:08:28Z", "ms": 1952766507817.1584 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-17", "window": { "start": { "local": "2031-11-17T11:23:30+08:00", "utc": "2031-11-17T03:23:30Z", "ms": 1952652209532.5198 }, "end": { "local": "2031-11-17T12:11:30+08:00", "utc": "2031-11-17T04:11:30Z", "ms": 1952655089532.5198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-18", "window": { "start": { "local": "2031-11-18T11:23:42+08:00", "utc": "2031-11-18T03:23:42Z", "ms": 1952738621628.1343 }, "end": { "local": "2031-11-18T12:11:42+08:00", "utc": "2031-11-18T04:11:42Z", "ms": 1952741501628.1343 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:51 on Mon 17 Nov to 19:08 on Tue 18 Nov.", "fact": "2031-11-17T13:50:56Z → 2031-11-18T11:08:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 17th, 11:24–12:12 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25006 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Tuesday 18 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Tuesday 18 November. Caturthī runs from 21:51 on Mon 17 Nov to 19:08 on Tue 18 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-11-18", "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/2031/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6492, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-11-19T16:29:37+08:00", "utc": "2031-11-19T08:29:37Z", "ms": 1952843376926.0222 }, "end": { "local": "2031-11-20T14:00:20+08:00", "utc": "2031-11-20T06:00:20Z", "ms": 1952920820488.2554 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-19T16:29:37+08:00", "utc": "2031-11-19T08:29:37Z", "ms": 1952843376926.0222 }, "end": { "local": "2031-11-20T14:00:20+08:00", "utc": "2031-11-20T06:00:20Z", "ms": 1952920820488.2554 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-19", "window": { "start": { "local": "2031-11-19T11:23:55+08:00", "utc": "2031-11-19T03:23:55Z", "ms": 1952825034543.0027 }, "end": { "local": "2031-11-19T12:11:55+08:00", "utc": "2031-11-19T04:11:55Z", "ms": 1952827914543.0027 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-20", "window": { "start": { "local": "2031-11-20T11:24:08+08:00", "utc": "2031-11-20T03:24:08Z", "ms": 1952911448266.6665 }, "end": { "local": "2031-11-20T12:12:08+08:00", "utc": "2031-11-20T04:12:08Z", "ms": 1952914328266.6665 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:30 on Wed 19 Nov to 14:00 on Thu 20 Nov.", "fact": "2031-11-19T08:29:37Z → 2031-11-20T06:00:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 19th, 11:24–12:12 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6492 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Fuzhou, 2031: Thursday 20 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Sūrya Ṣaṣṭhī (Chhath) 2031 falls on Thursday 20 November. Ṣaṣṭhī runs from 16:30 on Wed 19 Nov to 14:00 on Thu 20 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1273, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2031-11-21T11:45:36+08:00", "utc": "2031-11-21T03:45:36Z", "ms": 1952999135904.616 }, "end": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-21T11:45:36+08:00", "utc": "2031-11-21T03:45:36Z", "ms": 1952999135904.616 }, "end": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-21", "window": { "start": { "local": "2031-11-21T11:24:23+08:00", "utc": "2031-11-21T03:24:23Z", "ms": 1952997862788.849 }, "end": { "local": "2031-11-21T12:12:23+08:00", "utc": "2031-11-21T04:12:23Z", "ms": 1953000742788.849 } }, "covered_min": 27, "window_min": 48, "qualifies": true }, { "local_date": "2031-11-22", "window": { "start": { "local": "2031-11-22T11:24:38+08:00", "utc": "2031-11-22T03:24:38Z", "ms": 1953084278099.5112 }, "end": { "local": "2031-11-22T12:12:38+08:00", "utc": "2031-11-22T04:12:38Z", "ms": 1953087158099.5112 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 11:46 on Fri 21 Nov to 09:49 on Sat 22 Nov.", "fact": "2031-11-21T03:45:36Z → 2031-11-22T01:49:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 21st, 11:25–12:13 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 27 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1273 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Fuzhou, 2031: Friday 21 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": "2031-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-21", "confidence": "determinate" } ], "quote": "In Fuzhou, Gopāṣṭamī 2031 falls on Friday 21 November. Aṣṭamī runs from 11:46 on Fri 21 Nov to 09:49 on Sat 22 Nov and covers 27 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5722, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 }, "end": { "local": "2031-11-23T08:14:08+08:00", "utc": "2031-11-23T00:14:08Z", "ms": 1953159248494.8784 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 }, "end": { "local": "2031-11-23T08:14:08+08:00", "utc": "2031-11-23T00:14:08Z", "ms": 1953159248494.8784 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-22", "window": { "start": { "local": "2031-11-22T11:24:38+08:00", "utc": "2031-11-22T03:24:38Z", "ms": 1953084278099.5112 }, "end": { "local": "2031-11-22T12:12:38+08:00", "utc": "2031-11-22T04:12:38Z", "ms": 1953087158099.5112 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-11-23", "window": { "start": { "local": "2031-11-23T11:24:54+08:00", "utc": "2031-11-23T03:24:54Z", "ms": 1953170694188.7656 }, "end": { "local": "2031-11-23T12:12:54+08:00", "utc": "2031-11-23T04:12:54Z", "ms": 1953173574188.7656 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:49 on Sat 22 Nov to 08:14 on Sun 23 Nov.", "fact": "2031-11-22T01:49:16Z → 2031-11-23T00:14:08Z" }, { "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": "Navamī 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: purvaviddha → only-day · margin 5722 s" }, { "step": "ruling", "text": "Durgā Navamī, Fuzhou, 2031: Saturday 22 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": "2031-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-22", "confidence": "determinate" } ], "quote": "In Fuzhou, Durgā Navamī 2031 falls on Saturday 22 November. Navamī runs from 09:49 on Sat 22 Nov to 08:14 on Sun 23 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 709, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 }, "end": { "local": "2031-11-23T08:14:08+08:00", "utc": "2031-11-23T00:14:08Z", "ms": 1953159248494.8784 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-22T09:49:16+08:00", "utc": "2031-11-22T01:49:16Z", "ms": 1953078555679.2534 }, "end": { "local": "2031-11-23T08:14:08+08:00", "utc": "2031-11-23T00:14:08Z", "ms": 1953159248494.8784 } }, "kaala": "purvahna", "days": [ { "local_date": "2031-11-22", "window": { "start": { "local": "2031-11-22T06:25:59+08:00", "utc": "2031-11-21T22:25:59Z", "ms": 1953066359082.7358 }, "end": { "local": "2031-11-22T10:01:05+08:00", "utc": "2031-11-22T02:01:05Z", "ms": 1953079265093.9194 } }, "covered_min": 12, "window_min": 215, "qualifies": true }, { "local_date": "2031-11-23", "window": { "start": { "local": "2031-11-23T06:26:43+08:00", "utc": "2031-11-22T22:26:43Z", "ms": 1953152803478.3179 }, "end": { "local": "2031-11-23T10:01:31+08:00", "utc": "2031-11-23T02:01:31Z", "ms": 1953165690618.6162 } }, "covered_min": 107, "window_min": 215, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:49 on Sat 22 Nov to 08:14 on Sun 23 Nov.", "fact": "2031-11-22T01:49:16Z → 2031-11-23T00:14:08Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:26–10:01 on the 22nd, 06:27–10:02 on the 23rd.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 12 of 215 minutes on the 22nd and 107 of 215 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 709 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Fuzhou, 2031: Sunday 23 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-11-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-23", "confidence": "boundary" } ], "quote": "In Fuzhou, Akṣaya Navamī (Amla Navami) 2031 falls on Sunday 23 November. Navamī runs from 09:49 on Sat 22 Nov to 08:14 on Sun 23 Nov and covers 107 of 215 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 12 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-11-24", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 830, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-11-24T07:02:07+08:00", "utc": "2031-11-23T23:02:07Z", "ms": 1953241327105.835 }, "end": { "local": "2031-11-25T06:14:22+08:00", "utc": "2031-11-24T22:14:22Z", "ms": 1953324862003.899 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-24T07:02:07+08:00", "utc": "2031-11-23T23:02:07Z", "ms": 1953241327105.835 }, "end": { "local": "2031-11-25T06:14:22+08:00", "utc": "2031-11-24T22:14:22Z", "ms": 1953324862003.899 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-11-24", "window": { "start": { "local": "2031-11-24T06:27:28+08:00", "utc": "2031-11-23T22:27:28Z", "ms": 1953239247894.4265 }, "end": { "local": "2031-11-24T06:27:28+08:00", "utc": "2031-11-23T22:27:28Z", "ms": 1953239247894.4265 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2031-11-25", "window": { "start": { "local": "2031-11-25T06:28:12+08:00", "utc": "2031-11-24T22:28:12Z", "ms": 1953325692302.3828 }, "end": { "local": "2031-11-25T06:28:12+08:00", "utc": "2031-11-24T22:28:12Z", "ms": 1953325692302.3828 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:02 on Mon 24 Nov to 06:14 on Tue 25 Nov.", "fact": "2031-11-23T23:02:07Z → 2031-11-24T22:14:22Z" }, { "step": "kaala", "text": "Sunrise is at 06:27 on the 24th and 06:28 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 830 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Fuzhou, 2031: Monday 24 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": "2031-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Prabodhinī Ekādaśī 2031 falls on Monday 24 November. Ekādaśī runs from 07:02 on Mon 24 Nov to 06:14 on Tue 25 Nov, and is current at sunrise on neither day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-11-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/pradosha-vrata?on=2031-11-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39267, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-11-26T05:51:38+08:00", "utc": "2031-11-25T21:51:38Z", "ms": 1953409897748.6858 }, "end": { "local": "2031-11-27T05:54:27+08:00", "utc": "2031-11-26T21:54:27Z", "ms": 1953496467192.0515 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-26T05:51:38+08:00", "utc": "2031-11-25T21:51:38Z", "ms": 1953409897748.6858 }, "end": { "local": "2031-11-27T05:54:27+08:00", "utc": "2031-11-26T21:54:27Z", "ms": 1953496467192.0515 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-11-25", "window": { "start": { "local": "2031-11-25T17:10:45+08:00", "utc": "2031-11-25T09:10:45Z", "ms": 1953364245024.035 }, "end": { "local": "2031-11-25T18:57:11+08:00", "utc": "2031-11-25T10:57:11Z", "ms": 1953370630577.272 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2031-11-26", "window": { "start": { "local": "2031-11-26T17:10:37+08:00", "utc": "2031-11-26T09:10:37Z", "ms": 1953450637382.0737 }, "end": { "local": "2031-11-26T18:57:10+08:00", "utc": "2031-11-26T10:57:10Z", "ms": 1953457029861.5159 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:52 on Wed 26 Nov to 05:54 on Thu 27 Nov.", "fact": "2031-11-25T21:51:38Z → 2031-11-26T21:54:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:11–18:57 on the 25th, 17:11–18:57 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 25th and 107 of 107 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 39267 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Wednesday 26 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": "2031-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Wednesday 26 November. Trayodaśī runs from 05:52 on Wed 26 Nov to 05:54 on Thu 27 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-11-26", "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/2031/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14897, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-11-28T06:23:18+08:00", "utc": "2031-11-27T22:23:18Z", "ms": 1953584598285.4258 }, "end": { "local": "2031-11-29T07:18:29+08:00", "utc": "2031-11-28T23:18:29Z", "ms": 1953674309000.2568 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-28T06:23:18+08:00", "utc": "2031-11-27T22:23:18Z", "ms": 1953584598285.4258 }, "end": { "local": "2031-11-29T07:18:29+08:00", "utc": "2031-11-28T23:18:29Z", "ms": 1953674309000.2568 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-11-28", "window": { "start": { "local": "2031-11-28T11:26:26+08:00", "utc": "2031-11-28T03:26:26Z", "ms": 1953602785954.7954 }, "end": { "local": "2031-11-28T12:14:26+08:00", "utc": "2031-11-28T04:14:26Z", "ms": 1953605665954.7954 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-11-29", "window": { "start": { "local": "2031-11-29T11:26:46+08:00", "utc": "2031-11-29T03:26:46Z", "ms": 1953689206492.1523 }, "end": { "local": "2031-11-29T12:14:46+08:00", "utc": "2031-11-29T04:14:46Z", "ms": 1953692086492.1523 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:23 on Fri 28 Nov to 07:18 on Sat 29 Nov.", "fact": "2031-11-27T22:23:18Z → 2031-11-28T23:18:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 28th, 11:27–12:15 on the 29th.", "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 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14897 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Fuzhou, 2031: Friday 28 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": "2031-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Kārtikī Pūrṇimā 2031 falls on Friday 28 November. Pūrṇimā runs from 06:23 on Fri 28 Nov to 07:18 on Sat 29 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22130, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-11-28T06:23:18+08:00", "utc": "2031-11-27T22:23:18Z", "ms": 1953584598285.4258 }, "end": { "local": "2031-11-29T07:18:29+08:00", "utc": "2031-11-28T23:18:29Z", "ms": 1953674309000.2568 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2031-11-28T06:23:18+08:00", "utc": "2031-11-27T22:23:18Z", "ms": 1953584598285.4258 }, "end": { "local": "2031-11-29T07:18:29+08:00", "utc": "2031-11-28T23:18:29Z", "ms": 1953674309000.2568 } }, "kaala": "nishita", "days": [ { "local_date": "2031-11-27", "window": { "start": { "local": "2031-11-27T23:26:28+08:00", "utc": "2031-11-27T15:26:28Z", "ms": 1953559588233.0312 }, "end": { "local": "2031-11-28T00:14:28+08:00", "utc": "2031-11-27T16:14:28Z", "ms": 1953562468233.0312 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-11-28", "window": { "start": { "local": "2031-11-28T23:26:48+08:00", "utc": "2031-11-28T15:26:48Z", "ms": 1953646007995.2744 }, "end": { "local": "2031-11-29T00:14:48+08:00", "utc": "2031-11-28T16:14:48Z", "ms": 1953648887995.2744 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:23 on Fri 28 Nov to 07:18 on Sat 29 Nov.", "fact": "2031-11-27T22:23:18Z → 2031-11-28T23:18:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 27th, 23:27–00:15 on the 28th.", "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 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22130 s" }, { "step": "ruling", "text": "Rāsayātrā, Fuzhou, 2031: Friday 28 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": "2031-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-11-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Rāsayātrā 2031 falls on Friday 28 November. Pūrṇimā runs from 06:23 on Fri 28 Nov to 07:18 on Sat 29 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/sankashta-chaturthi?on=2031-12-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21533, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-12-02T12:34:13+08:00", "utc": "2031-12-02T04:34:13Z", "ms": 1953952452833.696 }, "end": { "local": "2031-12-03T14:59:02+08:00", "utc": "2031-12-03T06:59:02Z", "ms": 1954047541588.7527 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-02T12:34:13+08:00", "utc": "2031-12-02T04:34:13Z", "ms": 1953952452833.696 }, "end": { "local": "2031-12-03T14:59:02+08:00", "utc": "2031-12-03T06:59:02Z", "ms": 1954047541588.7527 } }, "kaala": "moonrise", "days": [ { "local_date": "2031-12-02", "window": { "start": { "local": "2031-12-02T20:06:24+08:00", "utc": "2031-12-02T12:06:24Z", "ms": 1953979583513.2734 }, "end": { "local": "2031-12-02T20:06:24+08:00", "utc": "2031-12-02T12:06:24Z", "ms": 1953979583513.2734 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-12-03", "window": { "start": { "local": "2031-12-03T20:57:54+08:00", "utc": "2031-12-03T12:57:54Z", "ms": 1954069074128.392 }, "end": { "local": "2031-12-03T20:57:54+08:00", "utc": "2031-12-03T12:57:54Z", "ms": 1954069074128.392 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:34 on Tue 2 Dec to 14:59 on Wed 3 Dec.", "fact": "2031-12-02T04:34:13Z → 2031-12-03T06:59:02Z" }, { "step": "kaala", "text": "Moonrise is at 20:06 on the 2nd and 20:58 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 21533 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Fuzhou, 2031: Tuesday 2 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": "2031-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-02", "confidence": "determinate" } ], "quote": "In Fuzhou, Saṅkaṣṭa Caturthī 2031 falls on Tuesday 2 December. Caturthī runs from 12:34 on Tue 2 Dec to 14:59 on Wed 3 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/sankashta-chaturthi?on=2031-12-02", "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/2031/ekadashi?on=2031-12-10", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17232, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-12-10T01:51:44+08:00", "utc": "2031-12-09T17:51:44Z", "ms": 1954605103587.0652 }, "end": { "local": "2031-12-11T01:31:31+08:00", "utc": "2031-12-10T17:31:31Z", "ms": 1954690291322.492 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-10T01:51:44+08:00", "utc": "2031-12-09T17:51:44Z", "ms": 1954605103587.0652 }, "end": { "local": "2031-12-11T01:31:31+08:00", "utc": "2031-12-10T17:31:31Z", "ms": 1954690291322.492 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-12-10", "window": { "start": { "local": "2031-12-10T06:38:56+08:00", "utc": "2031-12-09T22:38:56Z", "ms": 1954622335860.5198 }, "end": { "local": "2031-12-10T06:38:56+08:00", "utc": "2031-12-09T22:38:56Z", "ms": 1954622335860.5198 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-12-11", "window": { "start": { "local": "2031-12-11T06:39:36+08:00", "utc": "2031-12-10T22:39:36Z", "ms": 1954708775627.0344 }, "end": { "local": "2031-12-11T06:39:36+08:00", "utc": "2031-12-10T22:39:36Z", "ms": 1954708775627.0344 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:52 on Wed 10 Dec to 01:32 on Thu 11 Dec.", "fact": "2031-12-09T17:51:44Z → 2031-12-10T17:31:31Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 10th and 06:40 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 17232 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Fuzhou, 2031: Wednesday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-10", "confidence": "determinate" } ], "quote": "In Fuzhou, Utpannā Ekādaśī 2031 falls on Wednesday 10 December. Ekādaśī runs from 01:52 on Wed 10 Dec to 01:32 on Thu 11 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-12-10", "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/2031/pradosha-vrata?on=2031-12-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12715, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-12-12T00:23:33+08:00", "utc": "2031-12-11T16:23:33Z", "ms": 1954772613438.4358 }, "end": { "local": "2031-12-12T22:31:51+08:00", "utc": "2031-12-12T14:31:51Z", "ms": 1954852310715.756 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-12T00:23:33+08:00", "utc": "2031-12-11T16:23:33Z", "ms": 1954772613438.4358 }, "end": { "local": "2031-12-12T22:31:51+08:00", "utc": "2031-12-12T14:31:51Z", "ms": 1954852310715.756 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-12-11", "window": { "start": { "local": "2031-12-11T17:11:48+08:00", "utc": "2031-12-11T09:11:48Z", "ms": 1954746707985.4363 }, "end": { "local": "2031-12-11T18:59:36+08:00", "utc": "2031-12-11T10:59:36Z", "ms": 1954753175557.2908 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2031-12-12", "window": { "start": { "local": "2031-12-12T17:12:05+08:00", "utc": "2031-12-12T09:12:05Z", "ms": 1954833124767.1433 }, "end": { "local": "2031-12-12T18:59:55+08:00", "utc": "2031-12-12T10:59:55Z", "ms": 1954839595232.6533 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:24 on Fri 12 Dec to 22:32 on Fri 12 Dec.", "fact": "2031-12-11T16:23:33Z → 2031-12-12T14:31:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:12–19:00 on the 11th, 17:12–19:00 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 108 minutes on the 11th and 108 of 108 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 12715 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Fuzhou, 2031: Friday 12 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Kṛṣṇa Pradoṣa Vrata 2031 falls on Friday 12 December. Trayodaśī runs from 00:24 on Fri 12 Dec to 22:32 on Fri 12 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/shivaratri?on=2031-12-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3638, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2031-12-12T22:31:51+08:00", "utc": "2031-12-12T14:31:51Z", "ms": 1954852310715.756 }, "end": { "local": "2031-12-13T20:03:05+08:00", "utc": "2031-12-13T12:03:05Z", "ms": 1954929785093.877 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-12T22:31:51+08:00", "utc": "2031-12-12T14:31:51Z", "ms": 1954852310715.756 }, "end": { "local": "2031-12-13T20:03:05+08:00", "utc": "2031-12-13T12:03:05Z", "ms": 1954929785093.877 } }, "kaala": "nishita", "days": [ { "local_date": "2031-12-12", "window": { "start": { "local": "2031-12-12T23:32:29+08:00", "utc": "2031-12-12T15:32:29Z", "ms": 1954855949012.8057 }, "end": { "local": "2031-12-13T00:20:29+08:00", "utc": "2031-12-12T16:20:29Z", "ms": 1954858829012.8057 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-12-13", "window": { "start": { "local": "2031-12-13T23:32:57+08:00", "utc": "2031-12-13T15:32:57Z", "ms": 1954942377001.6543 }, "end": { "local": "2031-12-14T00:20:57+08:00", "utc": "2031-12-13T16:20:57Z", "ms": 1954945257001.6543 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:32 on Fri 12 Dec to 20:03 on Sat 13 Dec.", "fact": "2031-12-12T14:31:51Z → 2031-12-13T12:03:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:32–00:20 on the 12th, 23:33–00:21 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3638 s" }, { "step": "ruling", "text": "Śivarātri, Fuzhou, 2031: Friday 12 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2031-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-12", "confidence": "determinate" } ], "quote": "In Fuzhou, Śivarātri 2031 falls on Friday 12 December. Caturdaśī runs from 22:32 on Fri 12 Dec to 20:03 on Sat 13 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/fuzhou/festivals/2031/shivaratri?on=2031-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-12-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16367, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2031-12-17T07:01:48+08:00", "utc": "2031-12-16T23:01:48Z", "ms": 1955228507953.3801 }, "end": { "local": "2031-12-18T03:49:52+08:00", "utc": "2031-12-17T19:49:52Z", "ms": 1955303392277.7043 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-17T07:01:48+08:00", "utc": "2031-12-16T23:01:48Z", "ms": 1955228507953.3801 }, "end": { "local": "2031-12-18T03:49:52+08:00", "utc": "2031-12-17T19:49:52Z", "ms": 1955303392277.7043 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-17", "window": { "start": { "local": "2031-12-17T11:34:35+08:00", "utc": "2031-12-17T03:34:35Z", "ms": 1955244874527.0112 }, "end": { "local": "2031-12-17T12:22:35+08:00", "utc": "2031-12-17T04:22:35Z", "ms": 1955247754527.0112 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-12-18", "window": { "start": { "local": "2031-12-18T11:35:04+08:00", "utc": "2031-12-18T03:35:04Z", "ms": 1955331304198.17 }, "end": { "local": "2031-12-18T12:23:04+08:00", "utc": "2031-12-18T04:23:04Z", "ms": 1955334184198.17 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:02 on Wed 17 Dec to 03:50 on Thu 18 Dec.", "fact": "2031-12-16T23:01:48Z → 2031-12-17T19:49:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 17th, 11:35–12:23 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16367 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Fuzhou, 2031: Wednesday 17 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": "2031-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-17", "confidence": "determinate" } ], "quote": "In Fuzhou, Vināyaka Caturthī 2031 falls on Wednesday 17 December. Caturthī runs from 07:02 on Wed 17 Dec to 03:50 on Thu 18 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/vinayaka-chaturthi?on=2031-12-17", "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/2031/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27912, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2031-12-18T03:49:52+08:00", "utc": "2031-12-17T19:49:52Z", "ms": 1955303392277.7043 }, "end": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-18T03:49:52+08:00", "utc": "2031-12-17T19:49:52Z", "ms": 1955303392277.7043 }, "end": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-18", "window": { "start": { "local": "2031-12-18T11:35:04+08:00", "utc": "2031-12-18T03:35:04Z", "ms": 1955331304198.17 }, "end": { "local": "2031-12-18T12:23:04+08:00", "utc": "2031-12-18T04:23:04Z", "ms": 1955334184198.17 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2031-12-19", "window": { "start": { "local": "2031-12-19T11:35:34+08:00", "utc": "2031-12-19T03:35:34Z", "ms": 1955417734020.3457 }, "end": { "local": "2031-12-19T12:23:34+08:00", "utc": "2031-12-19T04:23:34Z", "ms": 1955420614020.3457 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:50 on Thu 18 Dec to 00:58 on Fri 19 Dec.", "fact": "2031-12-17T19:49:52Z → 2031-12-18T16:58:03Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27912 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Fuzhou, 2031: Thursday 18 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": "2031-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-18", "confidence": "determinate" } ], "quote": "In Fuzhou, Nāga Pañcamī (Mārgaśīrṣa) 2031 falls on Thursday 18 December. Pañcamī runs from 03:50 on Thu 18 Dec to 00:58 on Fri 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36611, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 }, "end": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 }, "end": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-18", "window": { "start": { "local": "2031-12-18T11:35:04+08:00", "utc": "2031-12-18T03:35:04Z", "ms": 1955331304198.17 }, "end": { "local": "2031-12-18T12:23:04+08:00", "utc": "2031-12-18T04:23:04Z", "ms": 1955334184198.17 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-12-19", "window": { "start": { "local": "2031-12-19T11:35:34+08:00", "utc": "2031-12-19T03:35:34Z", "ms": 1955417734020.3457 }, "end": { "local": "2031-12-19T12:23:34+08:00", "utc": "2031-12-19T04:23:34Z", "ms": 1955420614020.3457 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec.", "fact": "2031-12-18T16:58:03Z → 2031-12-19T14:33:46Z" }, { "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": "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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36611 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Fuzhou, 2031: Friday 19 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": "2031-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Campā Ṣaṣṭhī 2031 falls on Friday 19 December. Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36611, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 }, "end": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-19T00:58:03+08:00", "utc": "2031-12-18T16:58:03Z", "ms": 1955379482705.0923 }, "end": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-18", "window": { "start": { "local": "2031-12-18T11:35:04+08:00", "utc": "2031-12-18T03:35:04Z", "ms": 1955331304198.17 }, "end": { "local": "2031-12-18T12:23:04+08:00", "utc": "2031-12-18T04:23:04Z", "ms": 1955334184198.17 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-12-19", "window": { "start": { "local": "2031-12-19T11:35:34+08:00", "utc": "2031-12-19T03:35:34Z", "ms": 1955417734020.3457 }, "end": { "local": "2031-12-19T12:23:34+08:00", "utc": "2031-12-19T04:23:34Z", "ms": 1955420614020.3457 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec.", "fact": "2031-12-18T16:58:03Z → 2031-12-19T14:33:46Z" }, { "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": "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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36611 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Fuzhou, 2031: Friday 19 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": "2031-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-19", "confidence": "determinate" } ], "quote": "In Fuzhou, Skanda Ṣaṣṭhī 2031 falls on Friday 19 December. Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29911, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 }, "end": { "local": "2031-12-20T20:42:35+08:00", "utc": "2031-12-20T12:42:35Z", "ms": 1955536955142.0017 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-19T22:33:46+08:00", "utc": "2031-12-19T14:33:46Z", "ms": 1955457225512.659 }, "end": { "local": "2031-12-20T20:42:35+08:00", "utc": "2031-12-20T12:42:35Z", "ms": 1955536955142.0017 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-19", "window": { "start": { "local": "2031-12-19T11:35:34+08:00", "utc": "2031-12-19T03:35:34Z", "ms": 1955417734020.3457 }, "end": { "local": "2031-12-19T12:23:34+08:00", "utc": "2031-12-19T04:23:34Z", "ms": 1955420614020.3457 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-12-20", "window": { "start": { "local": "2031-12-20T11:36:04+08:00", "utc": "2031-12-20T03:36:04Z", "ms": 1955504163957.262 }, "end": { "local": "2031-12-20T12:24:04+08:00", "utc": "2031-12-20T04:24:04Z", "ms": 1955507043957.262 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:34 on Fri 19 Dec to 20:43 on Sat 20 Dec.", "fact": "2031-12-19T14:33:46Z → 2031-12-20T12:42:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 19th, 11:36–12:24 on the 20th.", "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 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29911 s" }, { "step": "ruling", "text": "Mitra Saptamī, Fuzhou, 2031: Saturday 20 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": "2031-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-20", "confidence": "determinate" } ], "quote": "In Fuzhou, Mitra Saptamī 2031 falls on Saturday 20 December. Saptamī runs from 22:34 on Fri 19 Dec to 20:43 on Sat 20 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/ekadashi?on=2031-12-24", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41214, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2031-12-23T18:49:04+08:00", "utc": "2031-12-23T10:49:04Z", "ms": 1955789344265.4146 }, "end": { "local": "2031-12-24T19:20:33+08:00", "utc": "2031-12-24T11:20:33Z", "ms": 1955877632948.7236 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-23T18:49:04+08:00", "utc": "2031-12-23T10:49:04Z", "ms": 1955789344265.4146 }, "end": { "local": "2031-12-24T19:20:33+08:00", "utc": "2031-12-24T11:20:33Z", "ms": 1955877632948.7236 } }, "kaala": "sunrise", "days": [ { "local_date": "2031-12-24", "window": { "start": { "local": "2031-12-24T06:47:00+08:00", "utc": "2031-12-23T22:47:00Z", "ms": 1955832420089.2153 }, "end": { "local": "2031-12-24T06:47:00+08:00", "utc": "2031-12-23T22:47:00Z", "ms": 1955832420089.2153 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2031-12-25", "window": { "start": { "local": "2031-12-25T06:47:27+08:00", "utc": "2031-12-24T22:47:27Z", "ms": 1955918847260.901 }, "end": { "local": "2031-12-25T06:47:27+08:00", "utc": "2031-12-24T22:47:27Z", "ms": 1955918847260.901 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:49 on Tue 23 Dec to 19:21 on Wed 24 Dec.", "fact": "2031-12-23T10:49:04Z → 2031-12-24T11:20:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 24th and 06:47 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 41214 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Fuzhou, 2031: Wednesday 24 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": "2031-12-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-24", "confidence": "determinate" } ], "quote": "In Fuzhou, Mokṣadā Ekādaśī 2031 falls on Wednesday 24 December. Ekādaśī runs from 18:49 on Tue 23 Dec to 19:21 on Wed 24 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/fuzhou/festivals/2031/ekadashi?on=2031-12-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24869, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2031-12-24T19:20:33+08:00", "utc": "2031-12-24T11:20:33Z", "ms": 1955877632948.7236 }, "end": { "local": "2031-12-25T20:20:47+08:00", "utc": "2031-12-25T12:20:47Z", "ms": 1955967647383.183 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-24T19:20:33+08:00", "utc": "2031-12-24T11:20:33Z", "ms": 1955877632948.7236 }, "end": { "local": "2031-12-25T20:20:47+08:00", "utc": "2031-12-25T12:20:47Z", "ms": 1955967647383.183 } }, "kaala": "madhyahna", "days": [ { "local_date": "2031-12-24", "window": { "start": { "local": "2031-12-24T11:38:04+08:00", "utc": "2031-12-24T03:38:04Z", "ms": 1955849884166.4739 }, "end": { "local": "2031-12-24T12:26:04+08:00", "utc": "2031-12-24T04:26:04Z", "ms": 1955852764166.4739 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2031-12-25", "window": { "start": { "local": "2031-12-25T11:38:34+08:00", "utc": "2031-12-25T03:38:34Z", "ms": 1955936314170.4111 }, "end": { "local": "2031-12-25T12:26:34+08:00", "utc": "2031-12-25T04:26:34Z", "ms": 1955939194170.4111 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 19:21 on Wed 24 Dec to 20:21 on Thu 25 Dec.", "fact": "2031-12-24T11:20:33Z → 2031-12-25T12:20:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 24th, 11:39–12:27 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24869 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Fuzhou, 2031: Thursday 25 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": "2031-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-25", "confidence": "determinate" } ], "quote": "In Fuzhou, Akhaṇḍa Dvādaśī 2031 falls on Thursday 25 December. Dvādaśī runs from 19:21 on Wed 24 Dec to 20:21 on Thu 25 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/fuzhou/festivals/2031/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/2031/pradosha-vrata?on=2031-12-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4505, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2031-12-25T20:20:47+08:00", "utc": "2031-12-25T12:20:47Z", "ms": 1955967647383.183 }, "end": { "local": "2031-12-26T21:45:29+08:00", "utc": "2031-12-26T13:45:29Z", "ms": 1956059128798.322 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-25T20:20:47+08:00", "utc": "2031-12-25T12:20:47Z", "ms": 1955967647383.183 }, "end": { "local": "2031-12-26T21:45:29+08:00", "utc": "2031-12-26T13:45:29Z", "ms": 1956059128798.322 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-12-25", "window": { "start": { "local": "2031-12-25T17:17:41+08:00", "utc": "2031-12-25T09:17:41Z", "ms": 1955956661079.9211 }, "end": { "local": "2031-12-25T19:05:43+08:00", "utc": "2031-12-25T11:05:43Z", "ms": 1955963142703.7205 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2031-12-26", "window": { "start": { "local": "2031-12-26T17:18:15+08:00", "utc": "2031-12-26T09:18:15Z", "ms": 1956043094925.1194 }, "end": { "local": "2031-12-26T19:06:15+08:00", "utc": "2031-12-26T11:06:15Z", "ms": 1956049575342.3188 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:21 on Thu 25 Dec to 21:45 on Fri 26 Dec.", "fact": "2031-12-25T12:20:47Z → 2031-12-26T13:45:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:18–19:06 on the 25th, 17:18–19:06 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 108 minutes on the 25th and 108 of 108 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4505 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Fuzhou, 2031: Friday 26 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": "2031-12-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-26", "confidence": "determinate" } ], "quote": "In Fuzhou, Śukla Pradoṣa Vrata 2031 falls on Friday 26 December. Trayodaśī runs from 20:21 on Thu 25 Dec to 21:45 on Fri 26 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/pradosha-vrata?on=2031-12-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/fuzhou/festivals/2031/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "1810821", "year": 2031, "local_date": "2031-12-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15833, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2031-12-27T23:30:41+08:00", "utc": "2031-12-27T15:30:41Z", "ms": 1956151841170.992 }, "end": { "local": "2031-12-29T01:33:02+08:00", "utc": "2031-12-28T17:33:02Z", "ms": 1956245582315.967 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2031-12-27T23:30:41+08:00", "utc": "2031-12-27T15:30:41Z", "ms": 1956151841170.992 }, "end": { "local": "2031-12-29T01:33:02+08:00", "utc": "2031-12-28T17:33:02Z", "ms": 1956245582315.967 } }, "kaala": "pradosha", "days": [ { "local_date": "2031-12-27", "window": { "start": { "local": "2031-12-27T17:18:50+08:00", "utc": "2031-12-27T09:18:50Z", "ms": 1956129529745.4211 }, "end": { "local": "2031-12-27T19:06:49+08:00", "utc": "2031-12-27T11:06:49Z", "ms": 1956136008662.249 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2031-12-28", "window": { "start": { "local": "2031-12-28T17:19:26+08:00", "utc": "2031-12-28T09:19:26Z", "ms": 1956215965506.398 }, "end": { "local": "2031-12-28T19:07:23+08:00", "utc": "2031-12-28T11:07:23Z", "ms": 1956222442630.3184 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:31 on Sat 27 Dec to 01:33 on Mon 29 Dec.", "fact": "2031-12-27T15:30:41Z → 2031-12-28T17:33:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:07 on the 27th, 17:19–19:07 on the 28th.", "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 27th and 108 of 108 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15833 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Fuzhou, 2031: Sunday 28 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": "2031-12-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2031-12-28", "confidence": "determinate" } ], "quote": "In Fuzhou, Dattātreyotpatti (Datta Jayanti) 2031 falls on Sunday 28 December. Pūrṇimā runs from 23:31 on Sat 27 Dec to 01:33 on Mon 29 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/fuzhou/festivals/2031/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }