{ "id": "/mashhad/festivals/2037", "place": { "id": "124665", "slug": "mashhad", "name": "Mashhad", "region": "Razavi Khorasan, Iran", "country": "IR", "lat": 36.29807, "lon": 59.60567, "elevation_m": 980, "tz": "Asia/Tehran" }, "year": 2037, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-01-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-04", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 5317, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-04T20:46:18+03:30", "utc": "2037-01-04T17:16:18Z", "ms": 2114702178028.9995 }, "end": { "local": "2037-01-05T17:47:08+03:30", "utc": "2037-01-05T14:17:08Z", "ms": 2114777827619.5398 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-04T20:46:18+03:30", "utc": "2037-01-04T17:16:18Z", "ms": 2114702178028.9995 }, "end": { "local": "2037-01-05T17:47:08+03:30", "utc": "2037-01-05T14:17:08Z", "ms": 2114777827619.5398 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-01-04", "window": { "start": { "local": "2037-01-04T19:17:41+03:30", "utc": "2037-01-04T15:47:41Z", "ms": 2114696861199.239 }, "end": { "local": "2037-01-04T19:17:41+03:30", "utc": "2037-01-04T15:47:41Z", "ms": 2114696861199.239 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-01-05", "window": { "start": { "local": "2037-01-05T20:27:56+03:30", "utc": "2037-01-05T16:57:56Z", "ms": 2114787476159.1191 }, "end": { "local": "2037-01-05T20:27:56+03:30", "utc": "2037-01-05T16:57:56Z", "ms": 2114787476159.1191 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:46 on Sun 4 Jan to 17:47 on Mon 5 Jan.", "fact": "2037-01-04T17:16:18Z → 2037-01-05T14:17:08Z" }, { "step": "kaala", "text": "Moonrise is at 19:18 on the 4th and 20:28 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 5317 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Sunday 4 January.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-04", "confidence": "boundary" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Sunday 4 January. Caturthī runs from 20:46 on Sun 4 Jan to 17:47 on Mon 5 Jan, and is current at moonrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-01-12", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4456, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-01-11T07:57:34+03:30", "utc": "2037-01-11T04:27:34Z", "ms": 2115260853939.21 }, "end": { "local": "2037-01-12T08:02:41+03:30", "utc": "2037-01-12T04:32:41Z", "ms": 2115347560764.9656 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-11T07:57:34+03:30", "utc": "2037-01-11T04:27:34Z", "ms": 2115260853939.21 }, "end": { "local": "2037-01-12T08:02:41+03:30", "utc": "2037-01-12T04:32:41Z", "ms": 2115347560764.9656 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-01-11", "window": { "start": { "local": "2037-01-11T06:43:18+03:30", "utc": "2037-01-11T03:13:18Z", "ms": 2115256398049.133 }, "end": { "local": "2037-01-11T06:43:18+03:30", "utc": "2037-01-11T03:13:18Z", "ms": 2115256398049.133 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-01-12", "window": { "start": { "local": "2037-01-12T06:43:07+03:30", "utc": "2037-01-12T03:13:07Z", "ms": 2115342787379.2485 }, "end": { "local": "2037-01-12T06:43:07+03:30", "utc": "2037-01-12T03:13:07Z", "ms": 2115342787379.2485 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:58 on Sun 11 Jan to 08:03 on Mon 12 Jan.", "fact": "2037-01-11T04:27:34Z → 2037-01-12T04:32:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:43 on the 11th and 06:43 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 4456 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Mashhad, 2037: Monday 12 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-12", "confidence": "determinate" } ], "quote": "In Mashhad, Ṣaṭtilā Ekādaśī 2037 falls on Monday 12 January. Ekādaśī runs from 07:58 on Sun 11 Jan to 08:03 on Mon 12 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28363, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-12T21:47:25+03:30", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T16:37:57+03:30", "utc": "2037-01-13T13:07:57Z", "ms": 2115464877045.698 }, "end": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 }, "end": { "local": "2037-01-15T16:39:56+03:30", "utc": "2037-01-15T13:09:56Z", "ms": 2115637795880.7559 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2037-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 08:46 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:39, and the day of the 15th ends at 16:40.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 28363 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Mashhad, 2037: Tuesday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2037-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Mashhad, Bhogi 2037 falls on Tuesday 13 January. It is kept the day before Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 08:46 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/mashhad/festivals/2037/bhogi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-01-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25106, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-01-13T08:37:26+03:30", "utc": "2037-01-13T05:07:26Z", "ms": 2115436045606.5217 }, "end": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-13T08:37:26+03:30", "utc": "2037-01-13T05:07:26Z", "ms": 2115436045606.5217 }, "end": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-13", "window": { "start": { "local": "2037-01-13T16:37:57+03:30", "utc": "2037-01-13T13:07:57Z", "ms": 2115464877045.698 }, "end": { "local": "2037-01-13T18:30:35+03:30", "utc": "2037-01-13T15:00:35Z", "ms": 2115471634794.0852 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 }, "end": { "local": "2037-01-14T18:31:24+03:30", "utc": "2037-01-14T15:01:24Z", "ms": 2115558083807.0146 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:37 on Tue 13 Jan to 09:40 on Wed 14 Jan.", "fact": "2037-01-13T05:07:26Z → 2037-01-14T06:10:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:38–18:31 on the 13th, 16:39–18:31 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 113 of 113 minutes on the 13th and 0 of 112 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 25106 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Tuesday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-13", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Tuesday 13 January. Trayodaśī runs from 08:37 on Tue 13 Jan to 09:40 on Wed 14 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-01-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28363, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-12T21:47:25+03:30", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T16:37:57+03:30", "utc": "2037-01-13T13:07:57Z", "ms": 2115464877045.698 }, "end": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 }, "end": { "local": "2037-01-15T16:39:56+03:30", "utc": "2037-01-15T13:09:56Z", "ms": 2115637795880.7559 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 08:46 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:39, and the day of the 15th ends at 16:40.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 28363 s" }, { "step": "ruling", "text": "Pongal, Mashhad, 2037: Wednesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2037-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Mashhad, Pongal 2037 falls on Wednesday 14 January. The Sun enters Makara at 08:46 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/mashhad/festivals/2037/pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31573, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-12T21:47:25+03:30", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "civil-day", "days": [ { "local_date": "2037-01-13", "window": { "start": { "local": "2037-01-13T00:00:00+03:30", "utc": "2037-01-12T20:30:00Z", "ms": 2115405000000 }, "end": { "local": "2037-01-14T00:00:00+03:30", "utc": "2037-01-13T20:30:00Z", "ms": 2115491400000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T00:00:00+03:30", "utc": "2037-01-13T20:30:00Z", "ms": 2115491400000 }, "end": { "local": "2037-01-15T00:00:00+03:30", "utc": "2037-01-14T20:30:00Z", "ms": 2115577800000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 08:46 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Mashhad.", "fact": "civil-day: midnight-to-midnight · Asia/Tehran" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 31573 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Mashhad, 2037: Wednesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2037-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2037-01-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Mashhad, Makara Saṅkrānti 2037 falls on Wednesday 14 January. The Sun enters Makara at 08:46 on Wed 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/mashhad/festivals/2037/makara-sankranti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-01-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34571, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T11:10:14+03:30", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T11:10:14+03:30", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 } }, "kaala": "nishita", "days": [ { "local_date": "2037-01-13", "window": { "start": { "local": "2037-01-13T23:16:19+03:30", "utc": "2037-01-13T19:46:19Z", "ms": 2115488778602.15 }, "end": { "local": "2037-01-14T00:04:19+03:30", "utc": "2037-01-13T20:34:19Z", "ms": 2115491658602.15 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T23:16:40+03:30", "utc": "2037-01-14T19:46:40Z", "ms": 2115575199881.0225 }, "end": { "local": "2037-01-15T00:04:40+03:30", "utc": "2037-01-14T20:34:40Z", "ms": 2115578079881.0225 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:40 on Wed 14 Jan to 11:10 on Thu 15 Jan.", "fact": "2037-01-14T06:10:30Z → 2037-01-15T07:40:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:16–00:04 on the 13th, 23:17–00:05 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34571 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Wednesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-14", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Wednesday 14 January. Caturdaśī runs from 09:40 on Wed 14 Jan to 11:10 on Thu 15 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-01-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28363, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-02-12T21:47:25+03:30", "utc": "2037-02-12T18:17:25Z", "ms": 2118075444892.0356 } }, "span": { "of": "transit", "start": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 }, "end": { "local": "2037-01-14T08:46:13+03:30", "utc": "2037-01-14T05:16:13Z", "ms": 2115522972848.6733 } }, "kaala": "sunset-day", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-13T16:37:57+03:30", "utc": "2037-01-13T13:07:57Z", "ms": 2115464877045.698 }, "end": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-14T16:38:56+03:30", "utc": "2037-01-14T13:08:56Z", "ms": 2115551336143.739 }, "end": { "local": "2037-01-15T16:39:56+03:30", "utc": "2037-01-15T13:09:56Z", "ms": 2115637795880.7559 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2037-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 08:46 on Wed 14 Jan.", "fact": "2037-01-14T05:16:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:39, and the day of the 15th ends at 16:40.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 28363 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Mashhad, 2037: Thursday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2037-01-15", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Mashhad, Mattu Pongal 2037 falls on Thursday 15 January. It is kept the day after Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 08:46 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/mashhad/festivals/2037/mattu-pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10670, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T11:10:14+03:30", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-14T09:40:30+03:30", "utc": "2037-01-14T06:10:30Z", "ms": 2115526229659.1934 }, "end": { "local": "2037-01-15T11:10:14+03:30", "utc": "2037-01-15T07:40:14Z", "ms": 2115618013859.9358 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-01-14", "window": { "start": { "local": "2037-01-14T04:50:02+03:30", "utc": "2037-01-14T01:20:02Z", "ms": 2115508802410.2144 }, "end": { "local": "2037-01-14T06:42:40+03:30", "utc": "2037-01-14T03:12:40Z", "ms": 2115515560158.6016 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "2037-01-15", "window": { "start": { "local": "2037-01-15T04:49:56+03:30", "utc": "2037-01-15T01:19:56Z", "ms": 2115595195955.03 }, "end": { "local": "2037-01-15T06:42:24+03:30", "utc": "2037-01-15T03:12:24Z", "ms": 2115601943618.3057 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:40 on Wed 14 Jan to 11:10 on Thu 15 Jan.", "fact": "2037-01-14T06:10:30Z → 2037-01-15T07:40:14Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:50–06:43 on the 14th, 04:50–06:42 on the 15th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 113 minutes on the 14th and 112 of 112 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10670 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Mashhad, 2037: Thursday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-15", "confidence": "determinate" } ], "quote": "In Mashhad, Yama Tarpaṇa 2037 falls on Thursday 15 January. Caturdaśī runs from 09:40 on Wed 14 Jan to 11:10 on Thu 15 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mashhad/festivals/2037/yama-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30494, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-19T20:34:43+03:30", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-19T20:34:43+03:30", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-19", "window": { "start": { "local": "2037-01-19T11:18:29+03:30", "utc": "2037-01-19T07:48:29Z", "ms": 2115964109153.857 }, "end": { "local": "2037-01-19T12:06:29+03:30", "utc": "2037-01-19T08:36:29Z", "ms": 2115966989153.857 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-01-20", "window": { "start": { "local": "2037-01-20T11:18:47+03:30", "utc": "2037-01-20T07:48:47Z", "ms": 2116050527162.4326 }, "end": { "local": "2037-01-20T12:06:47+03:30", "utc": "2037-01-20T08:36:47Z", "ms": 2116053407162.4326 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:35 on Mon 19 Jan to 23:19 on Tue 20 Jan.", "fact": "2037-01-19T17:04:43Z → 2037-01-20T19:48:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 19th, 11:19–12:07 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30494 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Mashhad, 2037: Tuesday 20 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-20", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2037 falls on Tuesday 20 January. Caturthī runs from 20:35 on Mon 19 Jan to 23:19 on Tue 20 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/ganesha-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7151, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-01-19T20:34:43+03:30", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-19T20:34:43+03:30", "utc": "2037-01-19T17:04:43Z", "ms": 2115997483248.349 }, "end": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-19", "window": { "start": { "local": "2037-01-19T16:44:00+03:30", "utc": "2037-01-19T13:14:00Z", "ms": 2115983640194.7815 }, "end": { "local": "2037-01-19T18:35:32+03:30", "utc": "2037-01-19T15:05:32Z", "ms": 2115990332429.6929 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "2037-01-20", "window": { "start": { "local": "2037-01-20T16:45:02+03:30", "utc": "2037-01-20T13:15:02Z", "ms": 2116070102368.2478 }, "end": { "local": "2037-01-20T18:36:23+03:30", "utc": "2037-01-20T15:06:23Z", "ms": 2116076782574.687 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:35 on Mon 19 Jan to 23:19 on Tue 20 Jan.", "fact": "2037-01-19T17:04:43Z → 2037-01-20T19:48:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:44–18:36 on the 19th, 16:45–18:36 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 112 minutes on the 19th and 111 of 111 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7151 s" }, { "step": "ruling", "text": "Tila Caturthī, Mashhad, 2037: Tuesday 20 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-20", "confidence": "determinate" } ], "quote": "In Mashhad, Tila Caturthī 2037 falls on Tuesday 20 January. Caturthī runs from 20:35 on Mon 19 Jan to 23:19 on Tue 20 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/tila-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33971, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T01:53:10+03:30", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T01:53:10+03:30", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-21", "window": { "start": { "local": "2037-01-21T11:19:04+03:30", "utc": "2037-01-21T07:49:04Z", "ms": 2116136944401.0688 }, "end": { "local": "2037-01-21T12:07:04+03:30", "utc": "2037-01-21T08:37:04Z", "ms": 2116139824401.0688 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-22", "window": { "start": { "local": "2037-01-22T11:19:21+03:30", "utc": "2037-01-22T07:49:21Z", "ms": 2116223360856.0178 }, "end": { "local": "2037-01-22T12:07:21+03:30", "utc": "2037-01-22T08:37:21Z", "ms": 2116226240856.0178 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:19 on Tue 20 Jan to 01:53 on Thu 22 Jan.", "fact": "2037-01-20T19:48:33Z → 2037-01-21T22:23:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 21st, 11:19–12:07 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33971 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Mashhad, 2037: Wednesday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-21", "confidence": "determinate" } ], "quote": "In Mashhad, Śrī Pañcamī 2037 falls on Wednesday 21 January. Pañcamī runs from 23:19 on Tue 20 Jan to 01:53 on Thu 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/shri-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33971, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T01:53:10+03:30", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-20T23:18:33+03:30", "utc": "2037-01-20T19:48:33Z", "ms": 2116093712780.6846 }, "end": { "local": "2037-01-22T01:53:10+03:30", "utc": "2037-01-21T22:23:10Z", "ms": 2116189390181.2556 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-21", "window": { "start": { "local": "2037-01-21T11:19:04+03:30", "utc": "2037-01-21T07:49:04Z", "ms": 2116136944401.0688 }, "end": { "local": "2037-01-21T12:07:04+03:30", "utc": "2037-01-21T08:37:04Z", "ms": 2116139824401.0688 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-22", "window": { "start": { "local": "2037-01-22T11:19:21+03:30", "utc": "2037-01-22T07:49:21Z", "ms": 2116223360856.0178 }, "end": { "local": "2037-01-22T12:07:21+03:30", "utc": "2037-01-22T08:37:21Z", "ms": 2116226240856.0178 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:19 on Tue 20 Jan to 01:53 on Thu 22 Jan.", "fact": "2037-01-20T19:48:33Z → 2037-01-21T22:23:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 21st, 11:19–12:07 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33971 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Mashhad, 2037: Wednesday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-21", "confidence": "determinate" } ], "quote": "In Mashhad, Vasanta Pañcamī 2037 falls on Wednesday 21 January. Pañcamī runs from 23:19 on Tue 20 Jan to 01:53 on Thu 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vasanta-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2464, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-01-23T04:07:03+03:30", "utc": "2037-01-23T00:37:03Z", "ms": 2116283822650.7698 }, "end": { "local": "2037-01-24T05:49:04+03:30", "utc": "2037-01-24T02:19:04Z", "ms": 2116376344052.356 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-23T04:07:03+03:30", "utc": "2037-01-23T00:37:03Z", "ms": 2116283822650.7698 }, "end": { "local": "2037-01-24T05:49:04+03:30", "utc": "2037-01-24T02:19:04Z", "ms": 2116376344052.356 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-01-23", "window": { "start": { "local": "2037-01-23T04:48:07+03:30", "utc": "2037-01-23T01:18:07Z", "ms": 2116286286981.2322 }, "end": { "local": "2037-01-23T06:39:02+03:30", "utc": "2037-01-23T03:09:02Z", "ms": 2116292942254.9155 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "2037-01-24", "window": { "start": { "local": "2037-01-24T04:47:46+03:30", "utc": "2037-01-24T01:17:46Z", "ms": 2116372666286.1033 }, "end": { "local": "2037-01-24T06:38:29+03:30", "utc": "2037-01-24T03:08:29Z", "ms": 2116379308672.3733 } }, "covered_min": 61, "window_min": 111, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:07 on Fri 23 Jan to 05:49 on Sat 24 Jan.", "fact": "2037-01-23T00:37:03Z → 2037-01-24T02:19:04Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:48–06:39 on the 23rd, 04:48–06:38 on the 24th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 111 of 111 minutes on the 23rd and 61 of 111 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2464 s" }, { "step": "ruling", "text": "Ratha Saptamī, Mashhad, 2037: Friday 23 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-23", "confidence": "boundary" } ], "quote": "In Mashhad, Ratha Saptamī 2037 falls on Friday 23 January. Saptamī runs from 04:07 on Fri 23 Jan to 05:49 on Sat 24 Jan and covers all of aruṇodaya that dawn. It also reaches the next dawn for 61 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/mashhad/festivals/2037/ratha-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-01-27", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 465, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-01-27T06:28:52+03:30", "utc": "2037-01-27T02:58:52Z", "ms": 2116637932291.3105 }, "end": { "local": "2037-01-28T05:05:43+03:30", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-27T06:28:52+03:30", "utc": "2037-01-27T02:58:52Z", "ms": 2116637932291.3105 }, "end": { "local": "2037-01-28T05:05:43+03:30", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-01-27", "window": { "start": { "local": "2037-01-27T06:36:37+03:30", "utc": "2037-01-27T03:06:37Z", "ms": 2116638397186.1753 }, "end": { "local": "2037-01-27T06:36:37+03:30", "utc": "2037-01-27T03:06:37Z", "ms": 2116638397186.1753 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T06:35:57+03:30", "utc": "2037-01-28T03:05:57Z", "ms": 2116724756529.016 }, "end": { "local": "2037-01-28T06:35:57+03:30", "utc": "2037-01-28T03:05:57Z", "ms": 2116724756529.016 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:29 on Tue 27 Jan to 05:06 on Wed 28 Jan.", "fact": "2037-01-27T02:58:52Z → 2037-01-28T01:35:43Z" }, { "step": "kaala", "text": "Sunrise is at 06:37 on the 27th and 06:36 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 465 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Mashhad, 2037: Tuesday 27 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-27", "confidence": "determinate" } ], "quote": "In Mashhad, Jayā Ekādaśī 2037 falls on Tuesday 27 January. Ekādaśī runs from 06:29 on Tue 27 Jan to 05:06 on Wed 28 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-01-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22500, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-01-28T05:05:43+03:30", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "end": { "local": "2037-01-29T02:59:07+03:30", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-28T05:05:43+03:30", "utc": "2037-01-28T01:35:43Z", "ms": 2116719342938.8208 }, "end": { "local": "2037-01-29T02:59:07+03:30", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T11:20:43+03:30", "utc": "2037-01-28T07:50:43Z", "ms": 2116741842566.2383 }, "end": { "local": "2037-01-28T12:08:43+03:30", "utc": "2037-01-28T08:38:43Z", "ms": 2116744722566.2383 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-01-29", "window": { "start": { "local": "2037-01-29T11:20:53+03:30", "utc": "2037-01-29T07:50:53Z", "ms": 2116828253292.2246 }, "end": { "local": "2037-01-29T12:08:53+03:30", "utc": "2037-01-29T08:38:53Z", "ms": 2116831133292.2246 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:06 on Wed 28 Jan to 02:59 on Thu 29 Jan.", "fact": "2037-01-28T01:35:43Z → 2037-01-28T23:29:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 28th, 11:21–12:09 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22500 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Mashhad, 2037: Wednesday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-28", "confidence": "determinate" } ], "quote": "In Mashhad, Bhīṣma Dvādaśī 2037 falls on Wednesday 28 January. Dvādaśī runs from 05:06 on Wed 28 Jan to 02:59 on Thu 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/bhishma-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-01-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19922, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-01-29T02:59:07+03:30", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "end": { "local": "2037-01-30T00:15:54+03:30", "utc": "2037-01-29T20:45:54Z", "ms": 2116874753699.2207 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-29T02:59:07+03:30", "utc": "2037-01-28T23:29:07Z", "ms": 2116798147126.6387 }, "end": { "local": "2037-01-30T00:15:54+03:30", "utc": "2037-01-29T20:45:54Z", "ms": 2116874753699.2207 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-01-28", "window": { "start": { "local": "2037-01-28T16:53:29+03:30", "utc": "2037-01-28T13:23:29Z", "ms": 2116761808603.4607 }, "end": { "local": "2037-01-28T18:43:03+03:30", "utc": "2037-01-28T15:13:03Z", "ms": 2116768382679.1294 } }, "covered_min": 0, "window_min": 110, "qualifies": false }, { "local_date": "2037-01-29", "window": { "start": { "local": "2037-01-29T16:54:32+03:30", "utc": "2037-01-29T13:24:32Z", "ms": 2116848272413.4736 }, "end": { "local": "2037-01-29T18:43:52+03:30", "utc": "2037-01-29T15:13:52Z", "ms": 2116854832110.6912 } }, "covered_min": 109, "window_min": 109, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:59 on Thu 29 Jan to 00:16 on Fri 30 Jan.", "fact": "2037-01-28T23:29:07Z → 2037-01-29T20:45:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:53–18:43 on the 28th, 16:55–18:44 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 110 minutes on the 28th and 109 of 109 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 19922 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Thursday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-29", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Thursday 29 January. Trayodaśī runs from 02:59 on Thu 29 Jan to 00:16 on Fri 30 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19500, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-01-30T21:04:28+03:30", "utc": "2037-01-30T17:34:28Z", "ms": 2116949667593.0088 }, "end": { "local": "2037-01-31T17:34:12+03:30", "utc": "2037-01-31T14:04:12Z", "ms": 2117023452268.4482 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2037-01-30T21:04:28+03:30", "utc": "2037-01-30T17:34:28Z", "ms": 2116949667593.0088 }, "end": { "local": "2037-01-31T17:34:12+03:30", "utc": "2037-01-31T14:04:12Z", "ms": 2117023452268.4482 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-01-30", "window": { "start": { "local": "2037-01-30T11:21:03+03:30", "utc": "2037-01-30T07:51:03Z", "ms": 2116914663187.9756 }, "end": { "local": "2037-01-30T12:09:03+03:30", "utc": "2037-01-30T08:39:03Z", "ms": 2116917543187.9756 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-01-31", "window": { "start": { "local": "2037-01-31T11:21:12+03:30", "utc": "2037-01-31T07:51:12Z", "ms": 2117001072256.8096 }, "end": { "local": "2037-01-31T12:09:12+03:30", "utc": "2037-01-31T08:39:12Z", "ms": 2117003952256.8096 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:04 on Fri 30 Jan to 17:34 on Sat 31 Jan.", "fact": "2037-01-30T17:34:28Z → 2037-01-31T14:04:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 30th, 11:21–12:09 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19500 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Mashhad, 2037: Saturday 31 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maghi-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Maghi purnima (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-01-31", "confidence": "determinate" } ], "quote": "In Mashhad, Māghī Pūrṇimā 2037 falls on Saturday 31 January. Pūrṇimā runs from 21:04 on Fri 30 Jan to 17:34 on Sat 31 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/maghi-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-02-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26067, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-02-03T06:49:39+03:30", "utc": "2037-02-03T03:19:39Z", "ms": 2117243978537.8147 }, "end": { "local": "2037-02-04T03:42:33+03:30", "utc": "2037-02-04T00:12:33Z", "ms": 2117319153123.2856 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-03T06:49:39+03:30", "utc": "2037-02-03T03:19:39Z", "ms": 2117243978537.8147 }, "end": { "local": "2037-02-04T03:42:33+03:30", "utc": "2037-02-04T00:12:33Z", "ms": 2117319153123.2856 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-02-02", "window": { "start": { "local": "2037-02-02T19:17:16+03:30", "utc": "2037-02-02T15:47:16Z", "ms": 2117202435790.9536 }, "end": { "local": "2037-02-02T19:17:16+03:30", "utc": "2037-02-02T15:47:16Z", "ms": 2117202435790.9536 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-02-03", "window": { "start": { "local": "2037-02-03T20:28:06+03:30", "utc": "2037-02-03T16:58:06Z", "ms": 2117293086355.2764 }, "end": { "local": "2037-02-03T20:28:06+03:30", "utc": "2037-02-03T16:58:06Z", "ms": 2117293086355.2764 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:50 on Tue 3 Feb to 03:43 on Wed 4 Feb.", "fact": "2037-02-03T03:19:39Z → 2037-02-04T00:12:33Z" }, { "step": "kaala", "text": "Moonrise is at 19:17 on the 2nd and 20:28 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26067 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Tuesday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-03", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Tuesday 3 February. Caturthī runs from 06:50 on Tue 3 Feb to 03:43 on Wed 4 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-02-10", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25972, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-02-09T21:49:21+03:30", "utc": "2037-02-09T18:19:21Z", "ms": 2117816361393.9404 }, "end": { "local": "2037-02-10T23:10:51+03:30", "utc": "2037-02-10T19:40:51Z", "ms": 2117907651208.2808 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-09T21:49:21+03:30", "utc": "2037-02-09T18:19:21Z", "ms": 2117816361393.9404 }, "end": { "local": "2037-02-10T23:10:51+03:30", "utc": "2037-02-10T19:40:51Z", "ms": 2117907651208.2808 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-02-10", "window": { "start": { "local": "2037-02-10T06:24:45+03:30", "utc": "2037-02-10T02:54:45Z", "ms": 2117847284905.9932 }, "end": { "local": "2037-02-10T06:24:45+03:30", "utc": "2037-02-10T02:54:45Z", "ms": 2117847284905.9932 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-02-11", "window": { "start": { "local": "2037-02-11T06:23:43+03:30", "utc": "2037-02-11T02:53:43Z", "ms": 2117933623359.0503 }, "end": { "local": "2037-02-11T06:23:43+03:30", "utc": "2037-02-11T02:53:43Z", "ms": 2117933623359.0503 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:49 on Mon 9 Feb to 23:11 on Tue 10 Feb.", "fact": "2037-02-09T18:19:21Z → 2037-02-10T19:40:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:25 on the 10th and 06:24 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 25972 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Mashhad, 2037: Tuesday 10 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-10", "confidence": "determinate" } ], "quote": "In Mashhad, Vijayā Ekādaśī 2037 falls on Tuesday 10 February. Ekādaśī runs from 21:49 on Mon 9 Feb to 23:11 on Tue 10 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-02-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-02-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22076, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-02-12T01:02:06+03:30", "utc": "2037-02-11T21:32:06Z", "ms": 2118000726330.1282 }, "end": { "local": "2037-02-13T03:16:03+03:30", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-12T01:02:06+03:30", "utc": "2037-02-11T21:32:06Z", "ms": 2118000726330.1282 }, "end": { "local": "2037-02-13T03:16:03+03:30", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-02-11", "window": { "start": { "local": "2037-02-11T17:08:15+03:30", "utc": "2037-02-11T13:38:15Z", "ms": 2117972295075.5298 }, "end": { "local": "2037-02-11T18:54:10+03:30", "utc": "2037-02-11T15:24:10Z", "ms": 2117978650472.6772 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2037-02-12", "window": { "start": { "local": "2037-02-12T17:09:17+03:30", "utc": "2037-02-12T13:39:17Z", "ms": 2118058757142.3918 }, "end": { "local": "2037-02-12T18:54:56+03:30", "utc": "2037-02-12T15:24:56Z", "ms": 2118065095726.1895 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:02 on Thu 12 Feb to 03:16 on Fri 13 Feb.", "fact": "2037-02-11T21:32:06Z → 2037-02-12T23:46:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:54 on the 11th, 17:09–18:55 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 106 minutes on the 11th and 106 of 106 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 22076 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Thursday 12 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-12", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 12 February. Trayodaśī runs from 01:02 on Thu 12 Feb to 03:16 on Fri 13 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-02-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11196, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-02-13T03:16:03+03:30", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "end": { "local": "2037-02-14T05:45:37+03:30", "utc": "2037-02-14T02:15:37Z", "ms": 2118190536573.5 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-13T03:16:03+03:30", "utc": "2037-02-12T23:46:03Z", "ms": 2118095162754.4153 }, "end": { "local": "2037-02-14T05:45:37+03:30", "utc": "2037-02-14T02:15:37Z", "ms": 2118190536573.5 } }, "kaala": "nishita", "days": [ { "local_date": "2037-02-12", "window": { "start": { "local": "2037-02-12T23:21:27+03:30", "utc": "2037-02-12T19:51:27Z", "ms": 2118081086831.6328 }, "end": { "local": "2037-02-13T00:09:27+03:30", "utc": "2037-02-12T20:39:27Z", "ms": 2118083966831.6328 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-02-13", "window": { "start": { "local": "2037-02-13T23:21:25+03:30", "utc": "2037-02-13T19:51:25Z", "ms": 2118167485117.086 }, "end": { "local": "2037-02-14T00:09:25+03:30", "utc": "2037-02-13T20:39:25Z", "ms": 2118170365117.086 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:16 on Fri 13 Feb to 05:46 on Sat 14 Feb.", "fact": "2037-02-12T23:46:03Z → 2037-02-14T02:15:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:21–00:09 on the 12th, 23:21–00:09 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 11196 s" }, { "step": "ruling", "text": "Mahāśivarātri, Mashhad, 2037: Friday 13 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-13", "confidence": "determinate" } ], "quote": "In Mashhad, Mahāśivarātri 2037 falls on Friday 13 February. Caturdaśī runs from 03:16 on Fri 13 Feb to 05:46 on Sat 14 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/maha-shivaratri", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-02-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14490, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-02-18T16:11:11+03:30", "utc": "2037-02-18T12:41:11Z", "ms": 2118573671020.964 }, "end": { "local": "2037-02-19T18:22:42+03:30", "utc": "2037-02-19T14:52:42Z", "ms": 2118667961718.0393 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-18T16:11:11+03:30", "utc": "2037-02-18T12:41:11Z", "ms": 2118573671020.964 }, "end": { "local": "2037-02-19T18:22:42+03:30", "utc": "2037-02-19T14:52:42Z", "ms": 2118667961718.0393 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-02-18", "window": { "start": { "local": "2037-02-18T11:21:41+03:30", "utc": "2037-02-18T07:51:41Z", "ms": 2118556301245.9424 }, "end": { "local": "2037-02-18T12:09:41+03:30", "utc": "2037-02-18T08:39:41Z", "ms": 2118559181245.9424 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-02-19", "window": { "start": { "local": "2037-02-19T11:21:36+03:30", "utc": "2037-02-19T07:51:36Z", "ms": 2118642695831.8296 }, "end": { "local": "2037-02-19T12:09:36+03:30", "utc": "2037-02-19T08:39:36Z", "ms": 2118645575831.8296 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:11 on Wed 18 Feb to 18:23 on Thu 19 Feb.", "fact": "2037-02-18T12:41:11Z → 2037-02-19T14:52:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 18th, 11:22–12:10 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14490 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Thursday 19 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-19", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Thursday 19 February. Caturthī runs from 16:11 on Wed 18 Feb to 18:23 on Thu 19 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-02-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-02-26", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37233, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-02-25T19:45:33+03:30", "utc": "2037-02-25T16:15:33Z", "ms": 2119191332815.6406 }, "end": { "local": "2037-02-26T17:32:30+03:30", "utc": "2037-02-26T14:02:30Z", "ms": 2119269749573.2952 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-25T19:45:33+03:30", "utc": "2037-02-25T16:15:33Z", "ms": 2119191332815.6406 }, "end": { "local": "2037-02-26T17:32:30+03:30", "utc": "2037-02-26T14:02:30Z", "ms": 2119269749573.2952 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-02-26", "window": { "start": { "local": "2037-02-26T06:06:06+03:30", "utc": "2037-02-26T02:36:06Z", "ms": 2119228565905.865 }, "end": { "local": "2037-02-26T06:06:06+03:30", "utc": "2037-02-26T02:36:06Z", "ms": 2119228565905.865 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-02-27", "window": { "start": { "local": "2037-02-27T06:04:48+03:30", "utc": "2037-02-27T02:34:48Z", "ms": 2119314887851.5225 }, "end": { "local": "2037-02-27T06:04:48+03:30", "utc": "2037-02-27T02:34:48Z", "ms": 2119314887851.5225 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:46 on Wed 25 Feb to 17:32 on Thu 26 Feb.", "fact": "2037-02-25T16:15:33Z → 2037-02-26T14:02:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 26th and 06:05 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 37233 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Mashhad, 2037: Thursday 26 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-26", "confidence": "determinate" } ], "quote": "In Mashhad, Āmalakī Ekādaśī 2037 falls on Thursday 26 February. Ekādaśī runs from 19:46 on Wed 25 Feb to 17:32 on Thu 26 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-02-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-02-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9655, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-02-27T14:43:15+03:30", "utc": "2037-02-27T11:13:15Z", "ms": 2119345995150.0208 }, "end": { "local": "2037-02-28T11:25:06+03:30", "utc": "2037-02-28T07:55:06Z", "ms": 2119420506114.0928 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-02-27T14:43:15+03:30", "utc": "2037-02-27T11:13:15Z", "ms": 2119345995150.0208 }, "end": { "local": "2037-02-28T11:25:06+03:30", "utc": "2037-02-28T07:55:06Z", "ms": 2119420506114.0928 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-02-27", "window": { "start": { "local": "2037-02-27T17:24:11+03:30", "utc": "2037-02-27T13:54:11Z", "ms": 2119355650567.0288 }, "end": { "local": "2037-02-27T19:05:25+03:30", "utc": "2037-02-27T15:35:25Z", "ms": 2119361725029.7915 } }, "covered_min": 101, "window_min": 101, "qualifies": true }, { "local_date": "2037-02-28", "window": { "start": { "local": "2037-02-28T17:25:07+03:30", "utc": "2037-02-28T13:55:07Z", "ms": 2119442107384.7131 }, "end": { "local": "2037-02-28T19:06:04+03:30", "utc": "2037-02-28T15:36:04Z", "ms": 2119448163666.7373 } }, "covered_min": 0, "window_min": 101, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:43 on Fri 27 Feb to 11:25 on Sat 28 Feb.", "fact": "2037-02-27T11:13:15Z → 2037-02-28T07:55:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:24–19:05 on the 27th, 17:25–19:06 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 101 of 101 minutes on the 27th and 0 of 101 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 9655 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Friday 27 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-02-27", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Friday 27 February. Trayodaśī runs from 14:43 on Fri 27 Feb to 11:25 on Sat 28 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26548, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-01T07:46:49+03:30", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-03-01T07:46:49+03:30", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-03-01", "window": { "start": { "local": "2037-03-01T15:09:17+03:30", "utc": "2037-03-01T11:39:17Z", "ms": 2119520356997.6597 }, "end": { "local": "2037-03-01T17:26:04+03:30", "utc": "2037-03-01T13:56:04Z", "ms": 2119528563872.1008 } }, "covered_min": 137, "window_min": 137, "qualifies": true }, { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T15:09:46+03:30", "utc": "2037-03-02T11:39:46Z", "ms": 2119606785887.242 }, "end": { "local": "2037-03-02T17:27:00+03:30", "utc": "2037-03-02T13:57:00Z", "ms": 2119615020040.6824 } }, "covered_min": 0, "window_min": 137, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:47 on Sun 1 Mar to 03:58 on Mon 2 Mar.", "fact": "2037-03-01T04:16:49Z → 2037-03-02T00:28:13Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:09–17:26 on the 1st, 15:10–17:27 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 137 of 137 minutes on the 1st and 0 of 137 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26548 s" }, { "step": "ruling", "text": "Holikā Dahana, Mashhad, 2037: Sunday 1 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holika-dahana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "not_evaluated": "The hour the row gives for the rite (\"it should be observed on second half of purnima at night\") is not tested: sāyāhna alone settles the day.", "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-01", "confidence": "determinate" } ], "quote": "In Mashhad, Holikā Dahana 2037 falls on Sunday 1 March. Pūrṇimā runs from 07:47 on Sun 1 Mar to 03:58 on Mon 2 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/holika-dahana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26548, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-01T07:46:49+03:30", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2037-03-01T07:46:49+03:30", "utc": "2037-03-01T04:16:49Z", "ms": 2119493808786.1697 }, "end": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-03-01", "window": { "start": { "local": "2037-03-01T15:09:17+03:30", "utc": "2037-03-01T11:39:17Z", "ms": 2119520356997.6597 }, "end": { "local": "2037-03-01T17:26:04+03:30", "utc": "2037-03-01T13:56:04Z", "ms": 2119528563872.1008 } }, "covered_min": 137, "window_min": 137, "qualifies": true }, { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T15:09:46+03:30", "utc": "2037-03-02T11:39:46Z", "ms": 2119606785887.242 }, "end": { "local": "2037-03-02T17:27:00+03:30", "utc": "2037-03-02T13:57:00Z", "ms": 2119615020040.6824 } }, "covered_min": 0, "window_min": 137, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2037-03-01", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:47 on Sun 1 Mar to 03:58 on Mon 2 Mar.", "fact": "2037-03-01T04:16:49Z → 2037-03-02T00:28:13Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:09–17:26 on the 1st, 15:10–17:27 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 137 of 137 minutes on the 1st and 0 of 137 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26548 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Sunday 1 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Mashhad, 2037: Monday 2 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holi", "follows": { "festival": "holika-dahana", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-02", "confidence": "determinate" } ], "quote": "In Mashhad, Holī 2037 falls on Monday 2 March. It is kept the day after Holikā Dahana, which falls on Sunday 1 March. Pūrṇimā runs from 07:47 on Sun 1 Mar to 03:58 on Mon 2 Mar and covers all of sāyāhna on the 1st.", "cite": "https://ahargana.org/mashhad/festivals/2037/holi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7356, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "end": { "local": "2037-03-03T00:09:48+03:30", "utc": "2037-03-02T20:39:48Z", "ms": 2119639188442.4778 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-02T03:58:13+03:30", "utc": "2037-03-02T00:28:13Z", "ms": 2119566492926.4375 }, "end": { "local": "2037-03-03T00:09:48+03:30", "utc": "2037-03-02T20:39:48Z", "ms": 2119639188442.4778 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-02", "window": { "start": { "local": "2037-03-02T06:00:49+03:30", "utc": "2037-03-02T02:30:49Z", "ms": 2119573849273.4802 }, "end": { "local": "2037-03-02T06:00:49+03:30", "utc": "2037-03-02T02:30:49Z", "ms": 2119573849273.4802 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-03-03", "window": { "start": { "local": "2037-03-03T05:59:28+03:30", "utc": "2037-03-03T02:29:28Z", "ms": 2119660168393.8716 }, "end": { "local": "2037-03-03T05:59:28+03:30", "utc": "2037-03-03T02:29:28Z", "ms": 2119660168393.8716 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 03:58 on Mon 2 Mar to 00:10 on Tue 3 Mar.", "fact": "2037-03-02T00:28:13Z → 2037-03-02T20:39:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:01 on the 2nd and 05:59 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7356 s" }, { "step": "ruling", "text": "Vasantotsava, Mashhad, 2037: Monday 2 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": "2037-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-02", "confidence": "determinate" } ], "quote": "In Mashhad, Vasantotsava 2037 falls on Monday 2 March. Pratipadā runs from 03:58 on Mon 2 Mar to 00:10 on Tue 3 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/vasantotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-03-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11261, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-03-04T17:16:40+03:30", "utc": "2037-03-04T13:46:40Z", "ms": 2119787199680.1367 }, "end": { "local": "2037-03-05T14:32:43+03:30", "utc": "2037-03-05T11:02:43Z", "ms": 2119863762993.938 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-04T17:16:40+03:30", "utc": "2037-03-04T13:46:40Z", "ms": 2119787199680.1367 }, "end": { "local": "2037-03-05T14:32:43+03:30", "utc": "2037-03-05T11:02:43Z", "ms": 2119863762993.938 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-03-04", "window": { "start": { "local": "2037-03-04T20:24:20+03:30", "utc": "2037-03-04T16:54:20Z", "ms": 2119798460384.8806 }, "end": { "local": "2037-03-04T20:24:20+03:30", "utc": "2037-03-04T16:54:20Z", "ms": 2119798460384.8806 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-03-05", "window": { "start": { "local": "2037-03-05T21:32:28+03:30", "utc": "2037-03-05T18:02:28Z", "ms": 2119888948448.9749 }, "end": { "local": "2037-03-05T21:32:28+03:30", "utc": "2037-03-05T18:02:28Z", "ms": 2119888948448.9749 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:17 on Wed 4 Mar to 14:33 on Thu 5 Mar.", "fact": "2037-03-04T13:46:40Z → 2037-03-05T11:02:43Z" }, { "step": "kaala", "text": "Moonrise is at 20:24 on the 4th and 21:32 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 11261 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Wednesday 4 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": "2037-03-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-04", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Wednesday 4 March. Caturthī runs from 17:17 on Wed 4 Mar to 14:33 on Thu 5 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-03-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-08", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 227, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-03-08T10:48:27+03:30", "utc": "2037-03-08T07:18:27Z", "ms": 2120109506830.799 }, "end": { "local": "2037-03-09T11:14:31+03:30", "utc": "2037-03-09T07:44:31Z", "ms": 2120197471479.3726 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-08T10:48:27+03:30", "utc": "2037-03-08T07:18:27Z", "ms": 2120109506830.799 }, "end": { "local": "2037-03-09T11:14:31+03:30", "utc": "2037-03-09T07:44:31Z", "ms": 2120197471479.3726 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-08", "window": { "start": { "local": "2037-03-08T11:18:33+03:30", "utc": "2037-03-08T07:48:33Z", "ms": 2120111313224.442 }, "end": { "local": "2037-03-08T12:06:33+03:30", "utc": "2037-03-08T08:36:33Z", "ms": 2120114193224.442 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-09", "window": { "start": { "local": "2037-03-09T11:18:18+03:30", "utc": "2037-03-09T07:48:18Z", "ms": 2120197698313.4482 }, "end": { "local": "2037-03-09T12:06:18+03:30", "utc": "2037-03-09T08:36:18Z", "ms": 2120200578313.4482 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:48 on Sun 8 Mar to 11:15 on Mon 9 Mar.", "fact": "2037-03-08T07:18:27Z → 2037-03-09T07:44:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 8th, 11:18–12:06 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 227 s < 300 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Mashhad, 2037: Sunday 8 March.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-08", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-08", "confidence": "determinate" } ], "quote": "In Mashhad, Śītalāṣṭamī 2037 falls on Sunday 8 March. Aṣṭamī runs from 10:48 on Sun 8 Mar to 11:15 on Mon 9 Mar and covers all of madhyāhna that midday. It is 3 min 47 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/shitalashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-03-12", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30650, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-03-11T14:19:11+03:30", "utc": "2037-03-11T10:49:11Z", "ms": 2120381351428.6948 }, "end": { "local": "2037-03-12T16:39:13+03:30", "utc": "2037-03-12T13:09:13Z", "ms": 2120476152989.637 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-11T14:19:11+03:30", "utc": "2037-03-11T10:49:11Z", "ms": 2120381351428.6948 }, "end": { "local": "2037-03-12T16:39:13+03:30", "utc": "2037-03-12T13:09:13Z", "ms": 2120476152989.637 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-11", "window": { "start": { "local": "2037-03-11T05:48:22+03:30", "utc": "2037-03-11T02:18:22Z", "ms": 2120350701882.1987 }, "end": { "local": "2037-03-11T05:48:22+03:30", "utc": "2037-03-11T02:18:22Z", "ms": 2120350701882.1987 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-03-12", "window": { "start": { "local": "2037-03-12T05:46:57+03:30", "utc": "2037-03-12T02:16:57Z", "ms": 2120437016607.2285 }, "end": { "local": "2037-03-12T05:46:57+03:30", "utc": "2037-03-12T02:16:57Z", "ms": 2120437016607.2285 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:19 on Wed 11 Mar to 16:39 on Thu 12 Mar.", "fact": "2037-03-11T10:49:11Z → 2037-03-12T13:09:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:48 on the 11th and 05:47 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 30650 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Mashhad, 2037: Thursday 12 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-12", "confidence": "determinate" } ], "quote": "In Mashhad, Pāpamocanī Ekādaśī 2037 falls on Thursday 12 March. Ekādaśī runs from 14:19 on Wed 11 Mar to 16:39 on Thu 12 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-03-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-14", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 118, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-13T19:15:55+03:30", "utc": "2037-03-13T15:45:55Z", "ms": 2120571954642.7598 }, "end": { "local": "2037-03-14T21:58:20+03:30", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-13T19:15:55+03:30", "utc": "2037-03-13T15:45:55Z", "ms": 2120571954642.7598 }, "end": { "local": "2037-03-14T21:58:20+03:30", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-03-13", "window": { "start": { "local": "2037-03-13T17:37:00+03:30", "utc": "2037-03-13T14:07:00Z", "ms": 2120566020125.8933 }, "end": { "local": "2037-03-13T19:13:57+03:30", "utc": "2037-03-13T15:43:57Z", "ms": 2120571836785.8652 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2037-03-14", "window": { "start": { "local": "2037-03-14T17:37:53+03:30", "utc": "2037-03-14T14:07:53Z", "ms": 2120652473296.5579 }, "end": { "local": "2037-03-14T19:14:31+03:30", "utc": "2037-03-14T15:44:31Z", "ms": 2120658271373.7646 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:16 on Fri 13 Mar to 21:58 on Sat 14 Mar.", "fact": "2037-03-13T15:45:55Z → 2037-03-14T18:28:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:14 on the 13th, 17:38–19:15 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 97 minutes on the 13th and 97 of 97 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 118 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Saturday 14 March.", "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": "2037-03-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-14", "confidence": "boundary" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Saturday 14 March. Trayodaśī runs from 19:16 on Fri 13 Mar to 21:58 on Sat 14 Mar and covers all of pradoṣa that evening. It is 1 min 58 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-03-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2005, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-03-14T21:58:20+03:30", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "end": { "local": "2037-03-16T00:37:24+03:30", "utc": "2037-03-15T21:07:24Z", "ms": 2120764044369.1772 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-14T21:58:20+03:30", "utc": "2037-03-14T18:28:20Z", "ms": 2120668100477.668 }, "end": { "local": "2037-03-16T00:37:24+03:30", "utc": "2037-03-15T21:07:24Z", "ms": 2120764044369.1772 } }, "kaala": "nishita", "days": [ { "local_date": "2037-03-14", "window": { "start": { "local": "2037-03-14T23:16:16+03:30", "utc": "2037-03-14T19:46:16Z", "ms": 2120672776086.083 }, "end": { "local": "2037-03-15T00:04:16+03:30", "utc": "2037-03-14T20:34:16Z", "ms": 2120675656086.083 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-15", "window": { "start": { "local": "2037-03-15T23:15:59+03:30", "utc": "2037-03-15T19:45:59Z", "ms": 2120759159346.22 }, "end": { "local": "2037-03-16T00:03:59+03:30", "utc": "2037-03-15T20:33:59Z", "ms": 2120762039346.22 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:58 on Sat 14 Mar to 00:37 on Mon 16 Mar.", "fact": "2037-03-14T18:28:20Z → 2037-03-15T21:07:24Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:16–00:04 on the 14th, 23:16–00:04 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 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2005 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Saturday 14 March.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-14", "confidence": "boundary" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Saturday 14 March. Caturdaśī runs from 21:58 on Sat 14 Mar to 00:37 on Mon 16 Mar and covers all of niśītha that night. It also reaches the next night for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21343, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-03-17T03:06:16+03:30", "utc": "2037-03-16T23:36:16Z", "ms": 2120859376271.6536 }, "end": { "local": "2037-03-18T05:20:08+03:30", "utc": "2037-03-18T01:50:08Z", "ms": 2120953808174.837 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-17T03:06:16+03:30", "utc": "2037-03-16T23:36:16Z", "ms": 2120859376271.6536 }, "end": { "local": "2037-03-18T05:20:08+03:30", "utc": "2037-03-18T01:50:08Z", "ms": 2120953808174.837 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-17", "window": { "start": { "local": "2037-03-17T11:16:09+03:30", "utc": "2037-03-17T07:46:09Z", "ms": 2120888768697.6685 }, "end": { "local": "2037-03-17T12:04:09+03:30", "utc": "2037-03-17T08:34:09Z", "ms": 2120891648697.6685 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-18", "window": { "start": { "local": "2037-03-18T11:15:51+03:30", "utc": "2037-03-18T07:45:51Z", "ms": 2120975151471.276 }, "end": { "local": "2037-03-18T12:03:51+03:30", "utc": "2037-03-18T08:33:51Z", "ms": 2120978031471.276 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 03:06 on Tue 17 Mar to 05:20 on Wed 18 Mar.", "fact": "2037-03-16T23:36:16Z → 2037-03-18T01:50:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 17th, 11:16–12:04 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21343 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Mashhad, 2037: Tuesday 17 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-17", "confidence": "determinate" } ], "quote": "In Mashhad, Navarātrārambha (Caitra) (Chaitra Navratri) 2037 falls on Tuesday 17 March. Pratipadā runs from 03:06 on Tue 17 Mar to 05:20 on Wed 18 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/navaratra-arambha-caitra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8729, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-03-19T07:15:35+03:30", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-19T07:15:35+03:30", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-19", "window": { "start": { "local": "2037-03-19T11:15:34+03:30", "utc": "2037-03-19T07:45:34Z", "ms": 2121061534075.297 }, "end": { "local": "2037-03-19T12:03:34+03:30", "utc": "2037-03-19T08:33:34Z", "ms": 2121064414075.297 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:15:17+03:30", "utc": "2037-03-20T07:45:17Z", "ms": 2121147916527.1006 }, "end": { "local": "2037-03-20T12:03:17+03:30", "utc": "2037-03-20T08:33:17Z", "ms": 2121150796527.1006 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:16 on Thu 19 Mar to 08:50 on Fri 20 Mar.", "fact": "2037-03-19T03:45:35Z → 2037-03-20T05:19:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 19th, 11:15–12:03 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8729 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Mashhad, 2037: Thursday 19 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": "2037-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-19", "confidence": "determinate" } ], "quote": "In Mashhad, Gaurī Tṛtīyā (Gangaur) 2037 falls on Thursday 19 March. Tṛtīyā runs from 07:16 on Thu 19 Mar to 08:50 on Fri 20 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/gauri-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8729, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-03-19T07:15:35+03:30", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-19T07:15:35+03:30", "utc": "2037-03-19T03:45:35Z", "ms": 2121047134831.769 }, "end": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-19", "window": { "start": { "local": "2037-03-19T11:15:34+03:30", "utc": "2037-03-19T07:45:34Z", "ms": 2121061534075.297 }, "end": { "local": "2037-03-19T12:03:34+03:30", "utc": "2037-03-19T08:33:34Z", "ms": 2121064414075.297 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:15:17+03:30", "utc": "2037-03-20T07:45:17Z", "ms": 2121147916527.1006 }, "end": { "local": "2037-03-20T12:03:17+03:30", "utc": "2037-03-20T08:33:17Z", "ms": 2121150796527.1006 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:16 on Thu 19 Mar to 08:50 on Fri 20 Mar.", "fact": "2037-03-19T03:45:35Z → 2037-03-20T05:19:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 19th, 11:15–12:03 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8729 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Mashhad, 2037: Thursday 19 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": "2037-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-19", "confidence": "determinate" } ], "quote": "In Mashhad, Saubhāgya Śayana Vrata 2037 falls on Thursday 19 March. Tṛtīyā runs from 07:16 on Thu 19 Mar to 08:50 on Fri 20 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/saubhagya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-03-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4503, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "end": { "local": "2037-03-21T09:59:56+03:30", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-20T08:49:47+03:30", "utc": "2037-03-20T05:19:47Z", "ms": 2121139187475.2488 }, "end": { "local": "2037-03-21T09:59:56+03:30", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-20", "window": { "start": { "local": "2037-03-20T11:15:17+03:30", "utc": "2037-03-20T07:45:17Z", "ms": 2121147916527.1006 }, "end": { "local": "2037-03-20T12:03:17+03:30", "utc": "2037-03-20T08:33:17Z", "ms": 2121150796527.1006 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-21", "window": { "start": { "local": "2037-03-21T11:14:59+03:30", "utc": "2037-03-21T07:44:59Z", "ms": 2121234298844.1758 }, "end": { "local": "2037-03-21T12:02:59+03:30", "utc": "2037-03-21T08:32:59Z", "ms": 2121237178844.1758 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:50 on Fri 20 Mar to 10:00 on Sat 21 Mar.", "fact": "2037-03-20T05:19:47Z → 2037-03-21T06:29:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 20th, 11:15–12:03 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4503 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Friday 20 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-20", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Friday 20 March. Caturthī runs from 08:50 on Fri 20 Mar to 10:00 on Sat 21 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-03-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1909, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-03-21T09:59:56+03:30", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "end": { "local": "2037-03-22T10:42:52+03:30", "utc": "2037-03-22T07:12:52Z", "ms": 2121318771974.197 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-21T09:59:56+03:30", "utc": "2037-03-21T06:29:56Z", "ms": 2121229796235.4883 }, "end": { "local": "2037-03-22T10:42:52+03:30", "utc": "2037-03-22T07:12:52Z", "ms": 2121318771974.197 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-21", "window": { "start": { "local": "2037-03-21T11:14:59+03:30", "utc": "2037-03-21T07:44:59Z", "ms": 2121234298844.1758 }, "end": { "local": "2037-03-21T12:02:59+03:30", "utc": "2037-03-21T08:32:59Z", "ms": 2121237178844.1758 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-22", "window": { "start": { "local": "2037-03-22T11:14:41+03:30", "utc": "2037-03-22T07:44:41Z", "ms": 2121320681044.2192 }, "end": { "local": "2037-03-22T12:02:41+03:30", "utc": "2037-03-22T08:32:41Z", "ms": 2121323561044.2192 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 10:00 on Sat 21 Mar to 10:43 on Sun 22 Mar.", "fact": "2037-03-21T06:29:56Z → 2037-03-22T07:12:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 21st, 11:15–12:03 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1909 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Mashhad, 2037: Saturday 21 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-21", "confidence": "determinate" } ], "quote": "In Mashhad, Lakṣmī Pañcamī 2037 falls on Saturday 21 March. Pañcamī runs from 10:00 on Sat 21 Mar to 10:43 on Sun 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/lakshmi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2418, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-03-24T10:33:47+03:30", "utc": "2037-03-24T07:03:47Z", "ms": 2121491027229.1455 }, "end": { "local": "2037-03-25T09:36:21+03:30", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-24T10:33:47+03:30", "utc": "2037-03-24T07:03:47Z", "ms": 2121491027229.1455 }, "end": { "local": "2037-03-25T09:36:21+03:30", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-24", "window": { "start": { "local": "2037-03-24T11:14:05+03:30", "utc": "2037-03-24T07:44:05Z", "ms": 2121493445165.6006 }, "end": { "local": "2037-03-24T12:02:05+03:30", "utc": "2037-03-24T08:32:05Z", "ms": 2121496325165.6006 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-25", "window": { "start": { "local": "2037-03-25T11:13:47+03:30", "utc": "2037-03-25T07:43:47Z", "ms": 2121579827124.3057 }, "end": { "local": "2037-03-25T12:01:47+03:30", "utc": "2037-03-25T08:31:47Z", "ms": 2121582707124.3057 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:34 on Tue 24 Mar to 09:36 on Wed 25 Mar.", "fact": "2037-03-24T07:03:47Z → 2037-03-25T06:06:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 24th, 11:14–12:02 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2418 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Mashhad, 2037: Tuesday 24 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-24", "confidence": "determinate" } ], "quote": "In Mashhad, Bhavānī Utpatti 2037 falls on Tuesday 24 March. Aṣṭamī runs from 10:34 on Tue 24 Mar to 09:36 on Wed 25 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/bhavani-utpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5846, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-03-25T09:36:21+03:30", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "end": { "local": "2037-03-26T08:02:11+03:30", "utc": "2037-03-26T04:32:11Z", "ms": 2121654731154.903 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-25T09:36:21+03:30", "utc": "2037-03-25T06:06:21Z", "ms": 2121573981494.6982 }, "end": { "local": "2037-03-26T08:02:11+03:30", "utc": "2037-03-26T04:32:11Z", "ms": 2121654731154.903 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-25", "window": { "start": { "local": "2037-03-25T11:13:47+03:30", "utc": "2037-03-25T07:43:47Z", "ms": 2121579827124.3057 }, "end": { "local": "2037-03-25T12:01:47+03:30", "utc": "2037-03-25T08:31:47Z", "ms": 2121582707124.3057 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-03-26", "window": { "start": { "local": "2037-03-26T11:13:29+03:30", "utc": "2037-03-26T07:43:29Z", "ms": 2121666209041.0327 }, "end": { "local": "2037-03-26T12:01:29+03:30", "utc": "2037-03-26T08:31:29Z", "ms": 2121669089041.0327 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:36 on Wed 25 Mar to 08:02 on Thu 26 Mar.", "fact": "2037-03-25T06:06:21Z → 2037-03-26T04:32:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 25th, 11:13–12:01 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 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 5846 s" }, { "step": "ruling", "text": "Rāma Navamī, Mashhad, 2037: Wednesday 25 March.", "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": "2037-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-25", "confidence": "determinate" } ], "quote": "In Mashhad, Rāma Navamī 2037 falls on Wednesday 25 March. Navamī runs from 09:36 on Wed 25 Mar to 08:02 on Thu 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rama-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-03-27", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1641, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-03-27T05:52:33+03:30", "utc": "2037-03-27T02:22:33Z", "ms": 2121733353463.2395 }, "end": { "local": "2037-03-28T03:10:58+03:30", "utc": "2037-03-27T23:40:58Z", "ms": 2121810058329.32 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-27T05:52:33+03:30", "utc": "2037-03-27T02:22:33Z", "ms": 2121733353463.2395 }, "end": { "local": "2037-03-28T03:10:58+03:30", "utc": "2037-03-27T23:40:58Z", "ms": 2121810058329.32 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-03-27", "window": { "start": { "local": "2037-03-27T05:25:13+03:30", "utc": "2037-03-27T01:55:13Z", "ms": 2121731712687.737 }, "end": { "local": "2037-03-27T05:25:13+03:30", "utc": "2037-03-27T01:55:13Z", "ms": 2121731712687.737 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-03-28", "window": { "start": { "local": "2037-03-28T05:23:45+03:30", "utc": "2037-03-28T01:53:45Z", "ms": 2121818025380.7021 }, "end": { "local": "2037-03-28T05:23:45+03:30", "utc": "2037-03-28T01:53:45Z", "ms": 2121818025380.7021 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:53 on Fri 27 Mar to 03:11 on Sat 28 Mar.", "fact": "2037-03-27T02:22:33Z → 2037-03-27T23:40:58Z" }, { "step": "kaala", "text": "Sunrise is at 05:25 on the 27th and 05:24 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1641 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Mashhad, 2037: Friday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-27", "confidence": "determinate" } ], "quote": "In Mashhad, Kāmadā Ekādaśī 2037 falls on Friday 27 March. Ekādaśī runs from 05:53 on Fri 27 Mar to 03:11 on Sat 28 Mar, and is current at sunrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30946, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-29T00:03:04+03:30", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-29T00:03:04+03:30", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-28", "window": { "start": { "local": "2037-03-28T11:12:53+03:30", "utc": "2037-03-28T07:42:53Z", "ms": 2121838972832.1382 }, "end": { "local": "2037-03-28T12:00:53+03:30", "utc": "2037-03-28T08:30:53Z", "ms": 2121841852832.1382 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T11:12:35+03:30", "utc": "2037-03-29T07:42:35Z", "ms": 2121925354751.1016 }, "end": { "local": "2037-03-29T12:00:35+03:30", "utc": "2037-03-29T08:30:35Z", "ms": 2121928234751.1016 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:03 on Sun 29 Mar to 20:36 on Sun 29 Mar.", "fact": "2037-03-28T20:33:04Z → 2037-03-29T17:06:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 28th, 11:13–12:01 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "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 30946 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Mashhad, 2037: Sunday 29 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-29", "confidence": "determinate" } ], "quote": "In Mashhad, Anaṅga Trayodaśī 2037 falls on Sunday 29 March. Trayodaśī runs from 00:03 on Sun 29 Mar to 20:36 on Sun 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/ananga-trayodashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-03-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4409, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-03-29T00:03:04+03:30", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-29T00:03:04+03:30", "utc": "2037-03-28T20:33:04Z", "ms": 2121885183894.7764 }, "end": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-03-28", "window": { "start": { "local": "2037-03-28T17:50:00+03:30", "utc": "2037-03-28T14:20:00Z", "ms": 2121862800283.5742 }, "end": { "local": "2037-03-28T19:22:19+03:30", "utc": "2037-03-28T15:52:19Z", "ms": 2121868338671.722 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T17:50:51+03:30", "utc": "2037-03-29T14:20:51Z", "ms": 2121949251307.5205 }, "end": { "local": "2037-03-29T19:22:51+03:30", "utc": "2037-03-29T15:52:51Z", "ms": 2121954771288.121 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:03 on Sun 29 Mar to 20:36 on Sun 29 Mar.", "fact": "2037-03-28T20:33:04Z → 2037-03-29T17:06:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:22 on the 28th, 17:51–19:23 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 92 minutes on the 28th and 92 of 92 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 4409 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Sunday 29 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-29", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Sunday 29 March. Trayodaśī runs from 00:03 on Sun 29 Mar to 20:36 on Sun 29 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-03-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17972, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "end": { "local": "2037-03-30T16:59:49+03:30", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-29T20:36:21+03:30", "utc": "2037-03-29T17:06:21Z", "ms": 2121959180565.1394 }, "end": { "local": "2037-03-30T16:59:49+03:30", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-29", "window": { "start": { "local": "2037-03-29T11:12:35+03:30", "utc": "2037-03-29T07:42:35Z", "ms": 2121925354751.1016 }, "end": { "local": "2037-03-29T12:00:35+03:30", "utc": "2037-03-29T08:30:35Z", "ms": 2121928234751.1016 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-30", "window": { "start": { "local": "2037-03-30T11:12:17+03:30", "utc": "2037-03-30T07:42:17Z", "ms": 2122011736717.1558 }, "end": { "local": "2037-03-30T12:00:17+03:30", "utc": "2037-03-30T08:30:17Z", "ms": 2122014616717.1558 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:36 on Sun 29 Mar to 17:00 on Mon 30 Mar.", "fact": "2037-03-29T17:06:21Z → 2037-03-30T13:29:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 29th, 11:12–12:00 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17972 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Mashhad, 2037: Monday 30 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vishnu-damanaka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Madanabhanji, (Bengal & Orissa) (paraviddha), Sivadamanaka caturdasi, Visnudamanaka caturdasi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-30", "confidence": "determinate" } ], "quote": "In Mashhad, Viṣṇudamanaka Caturdaśī 2037 falls on Monday 30 March. Caturdaśī runs from 20:36 on Sun 29 Mar to 17:00 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vishnu-damanaka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5017, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-03-30T16:59:49+03:30", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "end": { "local": "2037-03-31T13:23:35+03:30", "utc": "2037-03-31T09:53:35Z", "ms": 2122106015441.342 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2037-03-30T16:59:49+03:30", "utc": "2037-03-30T13:29:49Z", "ms": 2122032588949.5945 }, "end": { "local": "2037-03-31T13:23:35+03:30", "utc": "2037-03-31T09:53:35Z", "ms": 2122106015441.342 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-03-30", "window": { "start": { "local": "2037-03-30T11:12:17+03:30", "utc": "2037-03-30T07:42:17Z", "ms": 2122011736717.1558 }, "end": { "local": "2037-03-30T12:00:17+03:30", "utc": "2037-03-30T08:30:17Z", "ms": 2122014616717.1558 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-03-31", "window": { "start": { "local": "2037-03-31T11:11:59+03:30", "utc": "2037-03-31T07:41:59Z", "ms": 2122098118754.7756 }, "end": { "local": "2037-03-31T11:59:59+03:30", "utc": "2037-03-31T08:29:59Z", "ms": 2122100998754.7756 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:00 on Mon 30 Mar to 13:24 on Tue 31 Mar.", "fact": "2037-03-30T13:29:49Z → 2037-03-31T09:53:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 30th, 11:12–12:00 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5017 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Mashhad, 2037: Tuesday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chaitri-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-03-31", "confidence": "determinate" } ], "quote": "In Mashhad, Caitrī Pūrṇimā 2037 falls on Tuesday 31 March. Pūrṇimā runs from 17:00 on Mon 30 Mar to 13:24 on Tue 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/chaitri-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-04-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18661, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-04-03T04:24:44+03:30", "utc": "2037-04-03T00:54:44Z", "ms": 2122332884210.5337 }, "end": { "local": "2037-04-04T02:36:02+03:30", "utc": "2037-04-03T23:06:02Z", "ms": 2122412761943.7085 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-03T04:24:44+03:30", "utc": "2037-04-03T00:54:44Z", "ms": 2122332884210.5337 }, "end": { "local": "2037-04-04T02:36:02+03:30", "utc": "2037-04-03T23:06:02Z", "ms": 2122412761943.7085 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-04-02", "window": { "start": { "local": "2037-04-02T20:18:13+03:30", "utc": "2037-04-02T16:48:13Z", "ms": 2122303692542.0632 }, "end": { "local": "2037-04-02T20:18:13+03:30", "utc": "2037-04-02T16:48:13Z", "ms": 2122303692542.0632 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-03", "window": { "start": { "local": "2037-04-03T21:25:01+03:30", "utc": "2037-04-03T17:55:01Z", "ms": 2122394101362.6409 }, "end": { "local": "2037-04-03T21:25:01+03:30", "utc": "2037-04-03T17:55:01Z", "ms": 2122394101362.6409 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:25 on Fri 3 Apr to 02:36 on Sat 4 Apr.", "fact": "2037-04-03T00:54:44Z → 2037-04-03T23:06:02Z" }, { "step": "kaala", "text": "Moonrise is at 20:18 on the 2nd and 21:25 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18661 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Friday 3 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-03", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Friday 3 April. Caturthī runs from 04:25 on Fri 3 Apr to 02:36 on Sat 4 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-04-11", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12022, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-04-10T08:25:35+03:30", "utc": "2037-04-10T04:55:35Z", "ms": 2122952135058.2783 }, "end": { "local": "2037-04-11T11:05:29+03:30", "utc": "2037-04-11T07:35:29Z", "ms": 2123048128642.569 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-10T08:25:35+03:30", "utc": "2037-04-10T04:55:35Z", "ms": 2122952135058.2783 }, "end": { "local": "2037-04-11T11:05:29+03:30", "utc": "2037-04-11T07:35:29Z", "ms": 2123048128642.569 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-04-10", "window": { "start": { "local": "2037-04-10T05:05:13+03:30", "utc": "2037-04-10T01:35:13Z", "ms": 2122940113054.6472 }, "end": { "local": "2037-04-10T05:05:13+03:30", "utc": "2037-04-10T01:35:13Z", "ms": 2122940113054.6472 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-11", "window": { "start": { "local": "2037-04-11T05:03:50+03:30", "utc": "2037-04-11T01:33:50Z", "ms": 2123026430312.6775 }, "end": { "local": "2037-04-11T05:03:50+03:30", "utc": "2037-04-11T01:33:50Z", "ms": 2123026430312.6775 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:26 on Fri 10 Apr to 11:05 on Sat 11 Apr.", "fact": "2037-04-10T04:55:35Z → 2037-04-11T07:35:29Z" }, { "step": "kaala", "text": "Sunrise is at 05:05 on the 10th and 05:04 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12022 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Mashhad, 2037: Saturday 11 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-11", "confidence": "determinate" } ], "quote": "In Mashhad, Varūthinī Ekādaśī 2037 falls on Saturday 11 April. Ekādaśī runs from 08:26 on Fri 10 Apr to 11:05 on Sat 11 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-04-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7294, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-04-12T13:41:00+03:30", "utc": "2037-04-12T10:11:00Z", "ms": 2123143860356.1953 }, "end": { "local": "2037-04-13T16:02:03+03:30", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-12T13:41:00+03:30", "utc": "2037-04-12T10:11:00Z", "ms": 2123143860356.1953 }, "end": { "local": "2037-04-13T16:02:03+03:30", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-12", "window": { "start": { "local": "2037-04-12T18:02:45+03:30", "utc": "2037-04-12T14:32:45Z", "ms": 2123159565499.9736 }, "end": { "local": "2037-04-12T19:30:32+03:30", "utc": "2037-04-12T16:00:32Z", "ms": 2123164832300.091 } }, "covered_min": 88, "window_min": 88, "qualifies": true }, { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T18:03:37+03:30", "utc": "2037-04-13T14:33:37Z", "ms": 2123246016840.965 }, "end": { "local": "2037-04-13T19:31:06+03:30", "utc": "2037-04-13T16:01:06Z", "ms": 2123251265993.613 } }, "covered_min": 0, "window_min": 87, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:41 on Sun 12 Apr to 16:02 on Mon 13 Apr.", "fact": "2037-04-12T10:11:00Z → 2037-04-13T12:32:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:03–19:31 on the 12th, 18:04–19:31 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 88 of 88 minutes on the 12th and 0 of 87 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 7294 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Sunday 12 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-12", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Sunday 12 April. Trayodaśī runs from 13:41 on Sun 12 Apr to 16:02 on Mon 13 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-04-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6506, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2037-04-14T03:11:20+03:30", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 }, "end": { "local": "2037-05-15T00:00:54+03:30", "utc": "2037-05-14T20:30:54Z", "ms": 2125945853812.3438 } }, "span": { "of": "transit", "start": { "local": "2037-04-14T03:11:20+03:30", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 }, "end": { "local": "2037-04-14T03:11:20+03:30", "utc": "2037-04-13T23:41:20Z", "ms": 2123278879916.7327 } }, "kaala": "day", "days": [ { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T05:01:07+03:30", "utc": "2037-04-13T01:31:07Z", "ms": 2123199066500.8535 }, "end": { "local": "2037-04-14T04:59:45+03:30", "utc": "2037-04-14T01:29:45Z", "ms": 2123285385485.8245 } }, "covered_min": 1, "window_min": 1439, "qualifies": true }, { "local_date": "2037-04-14", "window": { "start": { "local": "2037-04-14T04:59:45+03:30", "utc": "2037-04-14T01:29:45Z", "ms": 2123285385485.8245 }, "end": { "local": "2037-04-15T04:58:25+03:30", "utc": "2037-04-15T01:28:25Z", "ms": 2123371705100.8108 } }, "covered_min": 0, "window_min": 1439, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 03:11 on Tue 14 Apr.", "fact": "2037-04-13T23:41:20Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:01 on the 13th, and from 05:00 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 6506 s" }, { "step": "ruling", "text": "Vaiśākhī, Mashhad, 2037: Monday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2037-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2037-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Mashhad, Vaiśākhī 2037 falls on Monday 13 April. The Sun enters Meṣa at 03:11 on Tue 14 Apr, and the rule counts the day from sunrise. Counted from midnight, or by the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/mashhad/festivals/2037/vaishakhi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-04-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18324, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-04-13T16:02:03+03:30", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "end": { "local": "2037-04-14T18:02:03+03:30", "utc": "2037-04-14T14:32:03Z", "ms": 2123332322560.2368 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-13T16:02:03+03:30", "utc": "2037-04-13T12:32:03Z", "ms": 2123238722580.312 }, "end": { "local": "2037-04-14T18:02:03+03:30", "utc": "2037-04-14T14:32:03Z", "ms": 2123332322560.2368 } }, "kaala": "nishita", "days": [ { "local_date": "2037-04-13", "window": { "start": { "local": "2037-04-13T23:07:41+03:30", "utc": "2037-04-13T19:37:41Z", "ms": 2123264261163.3948 }, "end": { "local": "2037-04-13T23:55:41+03:30", "utc": "2037-04-13T20:25:41Z", "ms": 2123267141163.3948 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-14", "window": { "start": { "local": "2037-04-14T23:07:27+03:30", "utc": "2037-04-14T19:37:27Z", "ms": 2123350646670.9692 }, "end": { "local": "2037-04-14T23:55:27+03:30", "utc": "2037-04-14T20:25:27Z", "ms": 2123353526670.9692 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:02 on Mon 13 Apr to 18:02 on Tue 14 Apr.", "fact": "2037-04-13T12:32:03Z → 2037-04-14T14:32:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:08–23:56 on the 13th, 23:07–23:55 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18324 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Monday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-13", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Monday 13 April. Caturdaśī runs from 16:02 on Mon 13 Apr to 18:02 on Tue 14 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-04-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25000, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-04-17T21:34:18+03:30", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-17T21:34:18+03:30", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-04-18", "window": { "start": { "local": "2037-04-18T04:54:28+03:30", "utc": "2037-04-18T01:24:28Z", "ms": 2123630667992.8005 }, "end": { "local": "2037-04-18T09:18:57+03:30", "utc": "2037-04-18T05:48:57Z", "ms": 2123646536788.7878 } }, "covered_min": 264, "window_min": 264, "qualifies": true }, { "local_date": "2037-04-19", "window": { "start": { "local": "2037-04-19T04:53:10+03:30", "utc": "2037-04-19T01:23:10Z", "ms": 2123716990394.367 }, "end": { "local": "2037-04-19T09:18:22+03:30", "utc": "2037-04-19T05:48:22Z", "ms": 2123732902272.3489 } }, "covered_min": 0, "window_min": 265, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:34 on Fri 17 Apr to 21:57 on Sat 18 Apr.", "fact": "2037-04-17T18:04:18Z → 2037-04-18T18:26:31Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 04:54–09:19 on the 18th, 04:53–09:18 on the 19th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 264 of 264 minutes on the 18th and 0 of 265 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25000 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Mashhad, 2037: Saturday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-18", "confidence": "determinate" } ], "quote": "In Mashhad, Akṣaya Tṛtīyā 2037 falls on Saturday 18 April. Tṛtīyā runs from 21:34 on Fri 17 Apr to 21:57 on Sat 18 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/akshaya-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7256, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-04-17T21:34:18+03:30", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-17T21:34:18+03:30", "utc": "2037-04-17T18:04:18Z", "ms": 2123604258485.023 }, "end": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-17", "window": { "start": { "local": "2037-04-17T18:07:03+03:30", "utc": "2037-04-17T14:37:03Z", "ms": 2123591822772.8882 }, "end": { "local": "2037-04-17T19:33:22+03:30", "utc": "2037-04-17T16:03:22Z", "ms": 2123597002135.5432 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "2037-04-18", "window": { "start": { "local": "2037-04-18T18:07:54+03:30", "utc": "2037-04-18T14:37:54Z", "ms": 2123678274380.7627 }, "end": { "local": "2037-04-18T19:33:57+03:30", "utc": "2037-04-18T16:03:57Z", "ms": 2123683436515.91 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:34 on Fri 17 Apr to 21:57 on Sat 18 Apr.", "fact": "2037-04-17T18:04:18Z → 2037-04-18T18:26:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:07–19:33 on the 17th, 18:08–19:34 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 86 minutes on the 17th and 86 of 86 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7256 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Mashhad, 2037: Saturday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-18", "confidence": "determinate" } ], "quote": "In Mashhad, Paraśurāma Jayantī 2037 falls on Saturday 18 April. Tṛtīyā runs from 21:34 on Fri 17 Apr to 21:57 on Sat 18 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/parashurama-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-04-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36029, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "end": { "local": "2037-04-19T21:55:28+03:30", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-18T21:56:31+03:30", "utc": "2037-04-18T18:26:31Z", "ms": 2123691990850.0703 }, "end": { "local": "2037-04-19T21:55:28+03:30", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-18", "window": { "start": { "local": "2037-04-18T11:07:11+03:30", "utc": "2037-04-18T07:37:11Z", "ms": 2123653031186.7817 }, "end": { "local": "2037-04-18T11:55:11+03:30", "utc": "2037-04-18T08:25:11Z", "ms": 2123655911186.7817 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-04-19", "window": { "start": { "local": "2037-04-19T11:06:58+03:30", "utc": "2037-04-19T07:36:58Z", "ms": 2123739418211.3398 }, "end": { "local": "2037-04-19T11:54:58+03:30", "utc": "2037-04-19T08:24:58Z", "ms": 2123742298211.3398 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:57 on Sat 18 Apr to 21:55 on Sun 19 Apr.", "fact": "2037-04-18T18:26:31Z → 2037-04-19T18:25:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 18th, 11:07–11:55 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36029 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Sunday 19 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-19", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Sunday 19 April. Caturthī runs from 21:57 on Sat 18 Apr to 21:55 on Sun 19 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-04-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34572, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-04-19T21:55:28+03:30", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "end": { "local": "2037-04-20T21:30:57+03:30", "utc": "2037-04-20T18:00:57Z", "ms": 2123863257470.711 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-19T21:55:28+03:30", "utc": "2037-04-19T18:25:28Z", "ms": 2123778327520.8228 }, "end": { "local": "2037-04-20T21:30:57+03:30", "utc": "2037-04-20T18:00:57Z", "ms": 2123863257470.711 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-19", "window": { "start": { "local": "2037-04-19T11:06:58+03:30", "utc": "2037-04-19T07:36:58Z", "ms": 2123739418211.3398 }, "end": { "local": "2037-04-19T11:54:58+03:30", "utc": "2037-04-19T08:24:58Z", "ms": 2123742298211.3398 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-04-20", "window": { "start": { "local": "2037-04-20T11:06:46+03:30", "utc": "2037-04-20T07:36:46Z", "ms": 2123825805634.0981 }, "end": { "local": "2037-04-20T11:54:46+03:30", "utc": "2037-04-20T08:24:46Z", "ms": 2123828685634.0981 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:55 on Sun 19 Apr to 21:31 on Mon 20 Apr.", "fact": "2037-04-19T18:25:28Z → 2037-04-20T18:00:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 19th, 11:07–11:55 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34572 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Mashhad, 2037: Monday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-20", "confidence": "determinate" } ], "quote": "In Mashhad, Śaṅkara Jayantī 2037 falls on Monday 20 April. Pañcamī runs from 21:55 on Sun 19 Apr to 21:31 on Mon 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/shankara-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27233, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-04-21T20:42:13+03:30", "utc": "2037-04-21T17:12:13Z", "ms": 2123946732938.9707 }, "end": { "local": "2037-04-22T19:28:14+03:30", "utc": "2037-04-22T15:58:14Z", "ms": 2124028694389.3872 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-21T20:42:13+03:30", "utc": "2037-04-21T17:12:13Z", "ms": 2123946732938.9707 }, "end": { "local": "2037-04-22T19:28:14+03:30", "utc": "2037-04-22T15:58:14Z", "ms": 2124028694389.3872 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-21", "window": { "start": { "local": "2037-04-21T11:06:33+03:30", "utc": "2037-04-21T07:36:33Z", "ms": 2123912193465.0698 }, "end": { "local": "2037-04-21T11:54:33+03:30", "utc": "2037-04-21T08:24:33Z", "ms": 2123915073465.0698 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-04-22", "window": { "start": { "local": "2037-04-22T11:06:22+03:30", "utc": "2037-04-22T07:36:22Z", "ms": 2123998581714.3604 }, "end": { "local": "2037-04-22T11:54:22+03:30", "utc": "2037-04-22T08:24:22Z", "ms": 2124001461714.3604 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:42 on Tue 21 Apr to 19:28 on Wed 22 Apr.", "fact": "2037-04-21T17:12:13Z → 2037-04-22T15:58:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 21st, 11:06–11:54 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27233 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Mashhad, 2037: Wednesday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-22", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṅgotpatti (Ganga Saptami) 2037 falls on Wednesday 22 April. Saptamī runs from 20:42 on Tue 21 Apr to 19:28 on Wed 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/gangotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-04-26", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20591, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-04-25T13:15:10+03:30", "utc": "2037-04-25T09:45:10Z", "ms": 2124265509823.8152 }, "end": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-25T13:15:10+03:30", "utc": "2037-04-25T09:45:10Z", "ms": 2124265509823.8152 }, "end": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-04-25", "window": { "start": { "local": "2037-04-25T04:45:42+03:30", "utc": "2037-04-25T01:15:42Z", "ms": 2124234941804.0398 }, "end": { "local": "2037-04-25T04:45:42+03:30", "utc": "2037-04-25T01:15:42Z", "ms": 2124234941804.0398 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T04:44:30+03:30", "utc": "2037-04-26T01:14:30Z", "ms": 2124321270140.3445 }, "end": { "local": "2037-04-26T04:44:30+03:30", "utc": "2037-04-26T01:14:30Z", "ms": 2124321270140.3445 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:15 on Sat 25 Apr to 10:28 on Sun 26 Apr.", "fact": "2037-04-25T09:45:10Z → 2037-04-26T06:57:41Z" }, { "step": "kaala", "text": "Sunrise is at 04:46 on the 25th and 04:45 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20591 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Mashhad, 2037: Sunday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-26", "confidence": "determinate" } ], "quote": "In Mashhad, Mohinī Ekādaśī 2037 falls on Sunday 26 April. Ekādaśī runs from 13:15 on Sat 25 Apr to 10:28 on Sun 26 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2278, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T11:05:39+03:30", "utc": "2037-04-26T07:35:39Z", "ms": 2124344139111.1108 }, "end": { "local": "2037-04-26T11:53:39+03:30", "utc": "2037-04-26T08:23:39Z", "ms": 2124347019111.1108 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T11:05:30+03:30", "utc": "2037-04-27T07:35:30Z", "ms": 2124430529619.98 }, "end": { "local": "2037-04-27T11:53:30+03:30", "utc": "2037-04-27T08:23:30Z", "ms": 2124433409619.98 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:28 on Sun 26 Apr to 07:27 on Mon 27 Apr.", "fact": "2037-04-26T06:57:41Z → 2037-04-27T03:56:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 26th, 11:05–11:53 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 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: purvaviddha → only-day · margin 2278 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Mashhad, 2037: Sunday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-26", "confidence": "determinate" } ], "quote": "In Mashhad, Paraśurāma Dvādaśī 2037 falls on Sunday 26 April. Dvādaśī runs from 10:28 on Sun 26 Apr to 07:27 on Mon 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/parashurama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2278, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-26T10:27:41+03:30", "utc": "2037-04-26T06:57:41Z", "ms": 2124341860775.0159 }, "end": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T11:05:39+03:30", "utc": "2037-04-26T07:35:39Z", "ms": 2124344139111.1108 }, "end": { "local": "2037-04-26T11:53:39+03:30", "utc": "2037-04-26T08:23:39Z", "ms": 2124347019111.1108 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T11:05:30+03:30", "utc": "2037-04-27T07:35:30Z", "ms": 2124430529619.98 }, "end": { "local": "2037-04-27T11:53:30+03:30", "utc": "2037-04-27T08:23:30Z", "ms": 2124433409619.98 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:28 on Sun 26 Apr to 07:27 on Mon 27 Apr.", "fact": "2037-04-26T06:57:41Z → 2037-04-27T03:56:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 26th, 11:05–11:53 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 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: purvaviddha → only-day · margin 2278 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Mashhad, 2037: Sunday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-26", "confidence": "determinate" } ], "quote": "In Mashhad, Rukmiṇī Dvādaśī 2037 falls on Sunday 26 April. Dvādaśī runs from 10:28 on Sun 26 Apr to 07:27 on Mon 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rukmini-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-04-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31239, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "end": { "local": "2037-04-28T04:19:50+03:30", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-27T07:26:45+03:30", "utc": "2037-04-27T03:56:45Z", "ms": 2124417405280.7632 }, "end": { "local": "2037-04-28T04:19:50+03:30", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-26", "window": { "start": { "local": "2037-04-26T18:14:48+03:30", "utc": "2037-04-26T14:44:48Z", "ms": 2124369888081.8774 }, "end": { "local": "2037-04-26T19:38:36+03:30", "utc": "2037-04-26T16:08:36Z", "ms": 2124374916263.4033 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T18:15:40+03:30", "utc": "2037-04-27T14:45:40Z", "ms": 2124456339796.6384 }, "end": { "local": "2037-04-27T19:39:12+03:30", "utc": "2037-04-27T16:09:12Z", "ms": 2124461351789.6597 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:27 on Mon 27 Apr to 04:20 on Tue 28 Apr.", "fact": "2037-04-27T03:56:45Z → 2037-04-28T00:49:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:15–19:39 on the 26th, 18:16–19:39 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 84 minutes on the 26th and 84 of 84 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31239 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Monday 27 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-27", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Monday 27 April. Trayodaśī runs from 07:27 on Mon 27 Apr to 04:20 on Tue 28 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20154, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-04-28T04:19:50+03:30", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "end": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-28T04:19:50+03:30", "utc": "2037-04-28T00:49:50Z", "ms": 2124492590373.8784 }, "end": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-04-27", "window": { "start": { "local": "2037-04-27T18:15:40+03:30", "utc": "2037-04-27T14:45:40Z", "ms": 2124456339796.6384 }, "end": { "local": "2037-04-27T19:39:12+03:30", "utc": "2037-04-27T16:09:12Z", "ms": 2124461351789.6597 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "2037-04-28", "window": { "start": { "local": "2037-04-28T18:16:31+03:30", "utc": "2037-04-28T14:46:31Z", "ms": 2124542791493.4702 }, "end": { "local": "2037-04-28T19:39:47+03:30", "utc": "2037-04-28T16:09:47Z", "ms": 2124547787437.6372 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:20 on Tue 28 Apr to 01:16 on Wed 29 Apr.", "fact": "2037-04-28T00:49:50Z → 2037-04-28T21:45:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:16–19:39 on the 27th, 18:17–19:40 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 84 minutes on the 27th and 83 of 83 on the 28th.", "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 20154 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Mashhad, 2037: Tuesday 28 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-28", "confidence": "determinate" } ], "quote": "In Mashhad, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2037 falls on Tuesday 28 April. Caturdaśī runs from 04:20 on Tue 28 Apr to 01:16 on Wed 29 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/nrisimha-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35371, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-29T22:23:56+03:30", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-29T22:23:56+03:30", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-29", "window": { "start": { "local": "2037-04-29T11:05:12+03:30", "utc": "2037-04-29T07:35:12Z", "ms": 2124603312121.3599 }, "end": { "local": "2037-04-29T11:53:12+03:30", "utc": "2037-04-29T08:23:12Z", "ms": 2124606192121.3599 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-30", "window": { "start": { "local": "2037-04-30T11:05:04+03:30", "utc": "2037-04-30T07:35:04Z", "ms": 2124689704140.516 }, "end": { "local": "2037-04-30T11:53:04+03:30", "utc": "2037-04-30T08:23:04Z", "ms": 2124692584140.516 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:16 on Wed 29 Apr to 22:24 on Wed 29 Apr.", "fact": "2037-04-28T21:45:42Z → 2037-04-29T18:53:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 29th, 11:05–11:53 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35371 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Mashhad, 2037: Wednesday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "buddha-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-29", "confidence": "determinate" } ], "quote": "In Mashhad, Buddha Pūrṇimā 2037 falls on Wednesday 29 April. Pūrṇimā runs from 01:16 on Wed 29 Apr to 22:24 on Wed 29 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/buddha-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35371, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-29T22:23:56+03:30", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2037-04-29T01:15:42+03:30", "utc": "2037-04-28T21:45:42Z", "ms": 2124567941520.5452 }, "end": { "local": "2037-04-29T22:23:56+03:30", "utc": "2037-04-29T18:53:56Z", "ms": 2124644036048.0005 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-04-29", "window": { "start": { "local": "2037-04-29T11:05:12+03:30", "utc": "2037-04-29T07:35:12Z", "ms": 2124603312121.3599 }, "end": { "local": "2037-04-29T11:53:12+03:30", "utc": "2037-04-29T08:23:12Z", "ms": 2124606192121.3599 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-04-30", "window": { "start": { "local": "2037-04-30T11:05:04+03:30", "utc": "2037-04-30T07:35:04Z", "ms": 2124689704140.516 }, "end": { "local": "2037-04-30T11:53:04+03:30", "utc": "2037-04-30T08:23:04Z", "ms": 2124692584140.516 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:16 on Wed 29 Apr to 22:24 on Wed 29 Apr.", "fact": "2037-04-28T21:45:42Z → 2037-04-29T18:53:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 29th, 11:05–11:53 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35371 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Mashhad, 2037: Wednesday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sampat-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-04-29", "confidence": "determinate" } ], "quote": "In Mashhad, Sampat Gaurī Vrata 2037 falls on Wednesday 29 April. Pūrṇimā runs from 01:16 on Wed 29 Apr to 22:24 on Wed 29 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/sampat-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-05-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16406, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-05-02T16:39:53+03:30", "utc": "2037-05-02T13:09:53Z", "ms": 2124882593258.8943 }, "end": { "local": "2037-05-03T16:09:15+03:30", "utc": "2037-05-03T12:39:15Z", "ms": 2124967154735.6716 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-02T16:39:53+03:30", "utc": "2037-05-02T13:09:53Z", "ms": 2124882593258.8943 }, "end": { "local": "2037-05-03T16:09:15+03:30", "utc": "2037-05-03T12:39:15Z", "ms": 2124967154735.6716 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-05-02", "window": { "start": { "local": "2037-05-02T21:13:20+03:30", "utc": "2037-05-02T17:43:20Z", "ms": 2124898999522.6155 }, "end": { "local": "2037-05-02T21:13:20+03:30", "utc": "2037-05-02T17:43:20Z", "ms": 2124898999522.6155 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-05-03", "window": { "start": { "local": "2037-05-03T22:11:35+03:30", "utc": "2037-05-03T18:41:35Z", "ms": 2124988894749.3008 }, "end": { "local": "2037-05-03T22:11:35+03:30", "utc": "2037-05-03T18:41:35Z", "ms": 2124988894749.3008 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:40 on Sat 2 May to 16:09 on Sun 3 May.", "fact": "2037-05-02T13:09:53Z → 2037-05-03T12:39:15Z" }, { "step": "kaala", "text": "Moonrise is at 21:13 on the 2nd and 22:12 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 16406 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Saturday 2 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": "2037-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-02", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Saturday 2 May. Caturthī runs from 16:40 on Sat 2 May to 16:09 on Sun 3 May and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-05-11", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1630, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-05-10T02:39:03+03:30", "utc": "2037-05-09T23:09:03Z", "ms": 2125523342558.1692 }, "end": { "local": "2037-05-11T04:55:59+03:30", "utc": "2037-05-11T01:25:59Z", "ms": 2125617958577.6653 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-10T02:39:03+03:30", "utc": "2037-05-09T23:09:03Z", "ms": 2125523342558.1692 }, "end": { "local": "2037-05-11T04:55:59+03:30", "utc": "2037-05-11T01:25:59Z", "ms": 2125617958577.6653 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-05-10", "window": { "start": { "local": "2037-05-10T04:29:42+03:30", "utc": "2037-05-10T00:59:42Z", "ms": 2125529982298.726 }, "end": { "local": "2037-05-10T04:29:42+03:30", "utc": "2037-05-10T00:59:42Z", "ms": 2125529982298.726 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-05-11", "window": { "start": { "local": "2037-05-11T04:28:48+03:30", "utc": "2037-05-11T00:58:48Z", "ms": 2125616328281.7068 }, "end": { "local": "2037-05-11T04:28:48+03:30", "utc": "2037-05-11T00:58:48Z", "ms": 2125616328281.7068 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:39 on Sun 10 May to 04:56 on Mon 11 May.", "fact": "2037-05-09T23:09:03Z → 2037-05-11T01:25:59Z" }, { "step": "kaala", "text": "Sunrise is at 04:30 on the 10th and 04:29 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 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both sunrises qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1630 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Mashhad, 2037: Monday 11 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-11", "confidence": "determinate" } ], "quote": "In Mashhad, Aparā Ekādaśī 2037 falls on Monday 11 May. Ekādaśī runs from 02:39 on Sun 10 May to 04:56 on Mon 11 May and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-05-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37025, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-05-12T06:48:59+03:30", "utc": "2037-05-12T03:18:59Z", "ms": 2125711139168.4514 }, "end": { "local": "2037-05-13T08:12:13+03:30", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-12T06:48:59+03:30", "utc": "2037-05-12T03:18:59Z", "ms": 2125711139168.4514 }, "end": { "local": "2037-05-13T08:12:13+03:30", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-05-12", "window": { "start": { "local": "2037-05-12T18:28:28+03:30", "utc": "2037-05-12T14:58:28Z", "ms": 2125753107933.8994 }, "end": { "local": "2037-05-12T19:48:17+03:30", "utc": "2037-05-12T16:18:17Z", "ms": 2125757896801.7021 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "2037-05-13", "window": { "start": { "local": "2037-05-13T18:29:18+03:30", "utc": "2037-05-13T14:59:18Z", "ms": 2125839557880.52 }, "end": { "local": "2037-05-13T19:48:53+03:30", "utc": "2037-05-13T16:18:53Z", "ms": 2125844333451.559 } }, "covered_min": 0, "window_min": 80, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:49 on Tue 12 May to 08:12 on Wed 13 May.", "fact": "2037-05-12T03:18:59Z → 2037-05-13T04:42:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:28–19:48 on the 12th, 18:29–19:49 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 80 of 80 minutes on the 12th and 0 of 80 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 37025 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Tuesday 12 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-12", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Tuesday 12 May. Trayodaśī runs from 06:49 on Tue 12 May to 08:12 on Wed 13 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-05-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-05-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30027, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-05-13T08:12:13+03:30", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "end": { "local": "2037-05-14T09:03:41+03:30", "utc": "2037-05-14T05:33:41Z", "ms": 2125892021208.4006 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-13T08:12:13+03:30", "utc": "2037-05-13T04:42:13Z", "ms": 2125802532789.56 }, "end": { "local": "2037-05-14T09:03:41+03:30", "utc": "2037-05-14T05:33:41Z", "ms": 2125892021208.4006 } }, "kaala": "nishita", "days": [ { "local_date": "2037-05-12", "window": { "start": { "local": "2037-05-12T23:03:46+03:30", "utc": "2037-05-12T19:33:46Z", "ms": 2125769626188.1597 }, "end": { "local": "2037-05-12T23:51:46+03:30", "utc": "2037-05-12T20:21:46Z", "ms": 2125772506188.1597 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-05-13", "window": { "start": { "local": "2037-05-13T23:03:46+03:30", "utc": "2037-05-13T19:33:46Z", "ms": 2125856026271.9163 }, "end": { "local": "2037-05-13T23:51:46+03:30", "utc": "2037-05-13T20:21:46Z", "ms": 2125858906271.9163 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:12 on Wed 13 May to 09:04 on Thu 14 May.", "fact": "2037-05-13T04:42:13Z → 2037-05-14T05:33:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:04–23:52 on the 12th, 23:04–23:52 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 30027 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Wednesday 13 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-13", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Wednesday 13 May. Caturdaśī runs from 08:12 on Wed 13 May to 09:04 on Thu 14 May and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-05-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-05-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11475, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-05-18T07:53:02+03:30", "utc": "2037-05-18T04:23:02Z", "ms": 2126233381680.3184 }, "end": { "local": "2037-05-19T06:42:30+03:30", "utc": "2037-05-19T03:12:30Z", "ms": 2126315550413.4724 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-18T07:53:02+03:30", "utc": "2037-05-18T04:23:02Z", "ms": 2126233381680.3184 }, "end": { "local": "2037-05-19T06:42:30+03:30", "utc": "2037-05-19T03:12:30Z", "ms": 2126315550413.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-05-18", "window": { "start": { "local": "2037-05-18T11:04:16+03:30", "utc": "2037-05-18T07:34:16Z", "ms": 2126244856387.571 }, "end": { "local": "2037-05-18T11:52:16+03:30", "utc": "2037-05-18T08:22:16Z", "ms": 2126247736387.571 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-05-19", "window": { "start": { "local": "2037-05-19T11:04:19+03:30", "utc": "2037-05-19T07:34:19Z", "ms": 2126331259054.572 }, "end": { "local": "2037-05-19T11:52:19+03:30", "utc": "2037-05-19T08:22:19Z", "ms": 2126334139054.572 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:53 on Mon 18 May to 06:43 on Tue 19 May.", "fact": "2037-05-18T04:23:02Z → 2037-05-19T03:12:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 18th, 11:04–11:52 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11475 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Monday 18 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": "2037-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-18", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Monday 18 May. Caturthī runs from 07:53 on Mon 18 May to 06:43 on Tue 19 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-05-25", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34059, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-05-24T18:51:08+03:30", "utc": "2037-05-24T15:21:08Z", "ms": 2126791268260.6074 }, "end": { "local": "2037-05-25T16:22:22+03:30", "utc": "2037-05-25T12:52:22Z", "ms": 2126868741621.5696 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-24T18:51:08+03:30", "utc": "2037-05-24T15:21:08Z", "ms": 2126791268260.6074 }, "end": { "local": "2037-05-25T16:22:22+03:30", "utc": "2037-05-25T12:52:22Z", "ms": 2126868741621.5696 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-05-25", "window": { "start": { "local": "2037-05-25T04:18:47+03:30", "utc": "2037-05-25T00:48:47Z", "ms": 2126825326932.824 }, "end": { "local": "2037-05-25T04:18:47+03:30", "utc": "2037-05-25T00:48:47Z", "ms": 2126825326932.824 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-05-26", "window": { "start": { "local": "2037-05-26T04:18:16+03:30", "utc": "2037-05-26T00:48:16Z", "ms": 2126911695740.945 }, "end": { "local": "2037-05-26T04:18:16+03:30", "utc": "2037-05-26T00:48:16Z", "ms": 2126911695740.945 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:51 on Sun 24 May to 16:22 on Mon 25 May.", "fact": "2037-05-24T15:21:08Z → 2037-05-25T12:52:22Z" }, { "step": "kaala", "text": "Sunrise is at 04:19 on the 25th and 04:18 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34059 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Mashhad, 2037: Monday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-25", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Ekādaśī 2037 falls on Monday 25 May. Ekādaśī runs from 18:51 on Sun 24 May to 16:22 on Mon 25 May and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-05-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17045, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-05-26T13:55:23+03:30", "utc": "2037-05-26T10:25:23Z", "ms": 2126946322510.1653 }, "end": { "local": "2037-05-27T11:36:44+03:30", "utc": "2037-05-27T08:06:44Z", "ms": 2127024403830.5266 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-05-26T13:55:23+03:30", "utc": "2037-05-26T10:25:23Z", "ms": 2126946322510.1653 }, "end": { "local": "2037-05-27T11:36:44+03:30", "utc": "2037-05-27T08:06:44Z", "ms": 2127024403830.5266 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-05-26", "window": { "start": { "local": "2037-05-26T18:39:28+03:30", "utc": "2037-05-26T15:09:28Z", "ms": 2126963367636.937 }, "end": { "local": "2037-05-26T19:56:34+03:30", "utc": "2037-05-26T16:26:34Z", "ms": 2126967994112.415 } }, "covered_min": 77, "window_min": 77, "qualifies": true }, { "local_date": "2037-05-27", "window": { "start": { "local": "2037-05-27T18:40:10+03:30", "utc": "2037-05-27T15:10:10Z", "ms": 2127049810274.3657 }, "end": { "local": "2037-05-27T19:57:07+03:30", "utc": "2037-05-27T16:27:07Z", "ms": 2127054427348.8867 } }, "covered_min": 0, "window_min": 77, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:55 on Tue 26 May to 11:37 on Wed 27 May.", "fact": "2037-05-26T10:25:23Z → 2037-05-27T08:06:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–19:57 on the 26th, 18:40–19:57 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 77 of 77 minutes on the 26th and 0 of 77 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17045 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Tuesday 26 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-05-26", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Tuesday 26 May. Trayodaśī runs from 13:55 on Tue 26 May to 11:37 on Wed 27 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-06-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34125, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-06-01T06:22:24+03:30", "utc": "2037-06-01T02:52:24Z", "ms": 2127437544284.9214 }, "end": { "local": "2037-06-02T07:13:26+03:30", "utc": "2037-06-02T03:43:26Z", "ms": 2127527005540.9302 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-01T06:22:24+03:30", "utc": "2037-06-01T02:52:24Z", "ms": 2127437544284.9214 }, "end": { "local": "2037-06-02T07:13:26+03:30", "utc": "2037-06-02T03:43:26Z", "ms": 2127527005540.9302 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-05-31", "window": { "start": { "local": "2037-05-31T20:53:39+03:30", "utc": "2037-05-31T17:23:39Z", "ms": 2127403418943.2742 }, "end": { "local": "2037-05-31T20:53:39+03:30", "utc": "2037-05-31T17:23:39Z", "ms": 2127403418943.2742 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-06-01", "window": { "start": { "local": "2037-06-01T21:43:39+03:30", "utc": "2037-06-01T18:13:39Z", "ms": 2127492818714.0393 }, "end": { "local": "2037-06-01T21:43:39+03:30", "utc": "2037-06-01T18:13:39Z", "ms": 2127492818714.0393 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:22 on Mon 1 Jun to 07:13 on Tue 2 Jun.", "fact": "2037-06-01T02:52:24Z → 2037-06-02T03:43:26Z" }, { "step": "kaala", "text": "Moonrise is at 20:54 on the 31st and 21:44 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34125 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Monday 1 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-01", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Monday 1 June. Caturthī runs from 06:22 on Mon 1 Jun to 07:13 on Tue 2 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-06-09", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25492, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-06-08T19:45:03+03:30", "utc": "2037-06-08T16:15:03Z", "ms": 2128090503227.557 }, "end": { "local": "2037-06-09T21:08:59+03:30", "utc": "2037-06-09T17:38:59Z", "ms": 2128181939489.9663 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-08T19:45:03+03:30", "utc": "2037-06-08T16:15:03Z", "ms": 2128090503227.557 }, "end": { "local": "2037-06-09T21:08:59+03:30", "utc": "2037-06-09T17:38:59Z", "ms": 2128181939489.9663 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-06-09", "window": { "start": { "local": "2037-06-09T04:13:57+03:30", "utc": "2037-06-09T00:43:57Z", "ms": 2128121037483.742 }, "end": { "local": "2037-06-09T04:13:57+03:30", "utc": "2037-06-09T00:43:57Z", "ms": 2128121037483.742 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-06-10", "window": { "start": { "local": "2037-06-10T04:13:52+03:30", "utc": "2037-06-10T00:43:52Z", "ms": 2128207431977.9678 }, "end": { "local": "2037-06-10T04:13:52+03:30", "utc": "2037-06-10T00:43:52Z", "ms": 2128207431977.9678 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:45 on Mon 8 Jun to 21:09 on Tue 9 Jun.", "fact": "2037-06-08T16:15:03Z → 2037-06-09T17:38:59Z" }, { "step": "kaala", "text": "Sunrise is at 04:14 on the 9th and 04:14 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25492 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Mashhad, 2037: Tuesday 9 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-09", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Ekādaśī 2037 falls on Tuesday 9 June. Ekādaśī runs from 19:45 on Mon 8 Jun to 21:09 on Tue 9 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-06-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6740, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-06-10T21:56:13+03:30", "utc": "2037-06-10T18:26:13Z", "ms": 2128271172940.156 }, "end": { "local": "2037-06-11T22:05:30+03:30", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-10T21:56:13+03:30", "utc": "2037-06-10T18:26:13Z", "ms": 2128271172940.156 }, "end": { "local": "2037-06-11T22:05:30+03:30", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-10", "window": { "start": { "local": "2037-06-10T18:48:31+03:30", "utc": "2037-06-10T15:18:31Z", "ms": 2128259910833.1533 }, "end": { "local": "2037-06-10T20:03:53+03:30", "utc": "2037-06-10T16:33:53Z", "ms": 2128264433146.2996 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "2037-06-11", "window": { "start": { "local": "2037-06-11T18:48:58+03:30", "utc": "2037-06-11T15:18:58Z", "ms": 2128346338293.1519 }, "end": { "local": "2037-06-11T20:04:17+03:30", "utc": "2037-06-11T16:34:17Z", "ms": 2128350856665.151 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:56 on Wed 10 Jun to 22:05 on Thu 11 Jun.", "fact": "2037-06-10T18:26:13Z → 2037-06-11T18:35:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:49–20:04 on the 10th, 18:49–20:04 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 75 minutes on the 10th and 75 of 75 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6740 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Thursday 11 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-11", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 11 June. Trayodaśī runs from 21:56 on Wed 10 Jun to 22:05 on Thu 11 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-06-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3712, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-06-11T22:05:30+03:30", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "end": { "local": "2037-06-12T21:38:49+03:30", "utc": "2037-06-12T18:08:49Z", "ms": 2128442928844.3892 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-11T22:05:30+03:30", "utc": "2037-06-11T18:35:30Z", "ms": 2128358129884.5022 }, "end": { "local": "2037-06-12T21:38:49+03:30", "utc": "2037-06-12T18:08:49Z", "ms": 2128442928844.3892 } }, "kaala": "nishita", "days": [ { "local_date": "2037-06-11", "window": { "start": { "local": "2037-06-11T23:07:22+03:30", "utc": "2037-06-11T19:37:22Z", "ms": 2128361842188.1484 }, "end": { "local": "2037-06-11T23:55:22+03:30", "utc": "2037-06-11T20:25:22Z", "ms": 2128364722188.1484 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-06-12", "window": { "start": { "local": "2037-06-12T23:07:35+03:30", "utc": "2037-06-12T19:37:35Z", "ms": 2128448255060.041 }, "end": { "local": "2037-06-12T23:55:35+03:30", "utc": "2037-06-12T20:25:35Z", "ms": 2128451135060.041 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:05 on Thu 11 Jun to 21:39 on Fri 12 Jun.", "fact": "2037-06-11T18:35:30Z → 2037-06-12T18:08:49Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:07–23:55 on the 11th, 23:08–23:56 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3712 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Thursday 11 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-11", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Thursday 11 June. Caturdaśī runs from 22:05 on Thu 11 Jun to 21:39 on Fri 12 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12734, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-06-15T17:29:36+03:30", "utc": "2037-06-15T13:59:36Z", "ms": 2128687175645.436 }, "end": { "local": "2037-06-16T15:28:39+03:30", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-15T17:29:36+03:30", "utc": "2037-06-15T13:59:36Z", "ms": 2128687175645.436 }, "end": { "local": "2037-06-16T15:28:39+03:30", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-15", "window": { "start": { "local": "2037-06-15T11:08:12+03:30", "utc": "2037-06-15T07:38:12Z", "ms": 2128664292287.2195 }, "end": { "local": "2037-06-15T11:56:12+03:30", "utc": "2037-06-15T08:26:12Z", "ms": 2128667172287.2195 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-16", "window": { "start": { "local": "2037-06-16T11:08:25+03:30", "utc": "2037-06-16T07:38:25Z", "ms": 2128750704845.4568 }, "end": { "local": "2037-06-16T11:56:25+03:30", "utc": "2037-06-16T08:26:25Z", "ms": 2128753584845.4568 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:30 on Mon 15 Jun to 15:29 on Tue 16 Jun.", "fact": "2037-06-15T13:59:36Z → 2037-06-16T11:58:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 15th, 11:08–11:56 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12734 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Mashhad, 2037: Tuesday 16 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-16", "confidence": "determinate" } ], "quote": "In Mashhad, Rambhā Tṛtīyā 2037 falls on Tuesday 16 June. Tṛtīyā runs from 17:30 on Mon 15 Jun to 15:29 on Tue 16 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rambha-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-06-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4854, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-06-16T15:28:39+03:30", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "end": { "local": "2037-06-17T13:17:32+03:30", "utc": "2037-06-17T09:47:32Z", "ms": 2128844851581.9788 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-16T15:28:39+03:30", "utc": "2037-06-16T11:58:39Z", "ms": 2128766319194.3965 }, "end": { "local": "2037-06-17T13:17:32+03:30", "utc": "2037-06-17T09:47:32Z", "ms": 2128844851581.9788 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-16", "window": { "start": { "local": "2037-06-16T11:08:25+03:30", "utc": "2037-06-16T07:38:25Z", "ms": 2128750704845.4568 }, "end": { "local": "2037-06-16T11:56:25+03:30", "utc": "2037-06-16T08:26:25Z", "ms": 2128753584845.4568 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-17", "window": { "start": { "local": "2037-06-17T11:08:37+03:30", "utc": "2037-06-17T07:38:37Z", "ms": 2128837117466.4697 }, "end": { "local": "2037-06-17T11:56:37+03:30", "utc": "2037-06-17T08:26:37Z", "ms": 2128839997466.4697 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:29 on Tue 16 Jun to 13:18 on Wed 17 Jun.", "fact": "2037-06-16T11:58:39Z → 2037-06-17T09:47:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 16th, 11:09–11:57 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4854 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Wednesday 17 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-17", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Wednesday 17 June. Caturthī runs from 15:29 on Tue 16 Jun to 13:18 on Wed 17 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 497, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-06-18T11:00:33+03:30", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T08:41:24+03:30", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-18T11:00:33+03:30", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T08:41:24+03:30", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-18", "window": { "start": { "local": "2037-06-18T11:08:50+03:30", "utc": "2037-06-18T07:38:50Z", "ms": 2128923530122.9458 }, "end": { "local": "2037-06-18T11:56:50+03:30", "utc": "2037-06-18T08:26:50Z", "ms": 2128926410122.9458 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-06-19", "window": { "start": { "local": "2037-06-19T11:09:03+03:30", "utc": "2037-06-19T07:39:03Z", "ms": 2129009942788.5513 }, "end": { "local": "2037-06-19T11:57:03+03:30", "utc": "2037-06-19T08:27:03Z", "ms": 2129012822788.5513 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:01 on Thu 18 Jun to 08:41 on Fri 19 Jun.", "fact": "2037-06-18T07:30:33Z → 2037-06-19T05:11:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 18th, 11:09–11:57 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 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 497 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Mashhad, 2037: Thursday 18 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-18", "confidence": "determinate" } ], "quote": "In Mashhad, Araṇya Gaurī Vrata 2037 falls on Thursday 18 June. Ṣaṣṭhī runs from 11:01 on Thu 18 Jun to 08:41 on Fri 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/aranya-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 497, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-06-18T11:00:33+03:30", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T08:41:24+03:30", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-18T11:00:33+03:30", "utc": "2037-06-18T07:30:33Z", "ms": 2128923033089.7705 }, "end": { "local": "2037-06-19T08:41:24+03:30", "utc": "2037-06-19T05:11:24Z", "ms": 2129001083926.7236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-18", "window": { "start": { "local": "2037-06-18T11:08:50+03:30", "utc": "2037-06-18T07:38:50Z", "ms": 2128923530122.9458 }, "end": { "local": "2037-06-18T11:56:50+03:30", "utc": "2037-06-18T08:26:50Z", "ms": 2128926410122.9458 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-06-19", "window": { "start": { "local": "2037-06-19T11:09:03+03:30", "utc": "2037-06-19T07:39:03Z", "ms": 2129009942788.5513 }, "end": { "local": "2037-06-19T11:57:03+03:30", "utc": "2037-06-19T08:27:03Z", "ms": 2129012822788.5513 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:01 on Thu 18 Jun to 08:41 on Fri 19 Jun.", "fact": "2037-06-18T07:30:33Z → 2037-06-19T05:11:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 18th, 11:09–11:57 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 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 497 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Mashhad, 2037: Thursday 18 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-18", "confidence": "determinate" } ], "quote": "In Mashhad, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2037 falls on Thursday 18 June. Ṣaṣṭhī runs from 11:01 on Thu 18 Jun to 08:41 on Fri 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/skanda-shashthi-jyaishtha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-06-23", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15123, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-06-23T00:03:07+03:30", "utc": "2037-06-22T20:33:07Z", "ms": 2129315587116.06 }, "end": { "local": "2037-06-23T22:18:13+03:30", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-23T00:03:07+03:30", "utc": "2037-06-22T20:33:07Z", "ms": 2129315587116.06 }, "end": { "local": "2037-06-23T22:18:13+03:30", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-06-23", "window": { "start": { "local": "2037-06-23T04:15:10+03:30", "utc": "2037-06-23T00:45:10Z", "ms": 2129330709803.5225 }, "end": { "local": "2037-06-23T04:15:10+03:30", "utc": "2037-06-23T00:45:10Z", "ms": 2129330709803.5225 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T04:15:27+03:30", "utc": "2037-06-24T00:45:27Z", "ms": 2129417126557.209 }, "end": { "local": "2037-06-24T04:15:27+03:30", "utc": "2037-06-24T00:45:27Z", "ms": 2129417126557.209 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:03 on Tue 23 Jun to 22:18 on Tue 23 Jun.", "fact": "2037-06-22T20:33:07Z → 2037-06-23T18:48:13Z" }, { "step": "kaala", "text": "Sunrise is at 04:15 on the 23rd and 04:15 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15123 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Mashhad, 2037: Tuesday 23 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-23", "confidence": "determinate" } ], "quote": "In Mashhad, Nirjalā Ekādaśī 2037 falls on Tuesday 23 June. Ekādaśī runs from 00:03 on Tue 23 Jun to 22:18 on Tue 23 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31930, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-06-23T22:18:13+03:30", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "end": { "local": "2037-06-24T20:50:16+03:30", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-23T22:18:13+03:30", "utc": "2037-06-23T18:48:13Z", "ms": 2129395692585.5225 }, "end": { "local": "2037-06-24T20:50:16+03:30", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-06-23", "window": { "start": { "local": "2037-06-23T11:09:53+03:30", "utc": "2037-06-23T07:39:53Z", "ms": 2129355593060.4849 }, "end": { "local": "2037-06-23T11:57:53+03:30", "utc": "2037-06-23T08:27:53Z", "ms": 2129358473060.4849 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T11:10:05+03:30", "utc": "2037-06-24T07:40:05Z", "ms": 2129442005421.3735 }, "end": { "local": "2037-06-24T11:58:05+03:30", "utc": "2037-06-24T08:28:05Z", "ms": 2129444885421.3735 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:18 on Tue 23 Jun to 20:50 on Wed 24 Jun.", "fact": "2037-06-23T18:48:13Z → 2037-06-24T17:20:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 23rd, 11:10–11:58 on the 24th.", "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 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 31930 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Mashhad, 2037: Wednesday 24 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-24", "confidence": "determinate" } ], "quote": "In Mashhad, Śrī Rāma Dvādaśī 2037 falls on Wednesday 24 June. Dvādaśī runs from 22:18 on Tue 23 Jun to 20:50 on Wed 24 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/shri-rama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-06-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1468, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-06-24T20:50:16+03:30", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "end": { "local": "2037-06-25T19:43:28+03:30", "utc": "2037-06-25T16:13:28Z", "ms": 2129559208057.914 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-24T20:50:16+03:30", "utc": "2037-06-24T17:20:16Z", "ms": 2129476815907.4797 }, "end": { "local": "2037-06-25T19:43:28+03:30", "utc": "2037-06-25T16:13:28Z", "ms": 2129559208057.914 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-24", "window": { "start": { "local": "2037-06-24T18:52:44+03:30", "utc": "2037-06-24T15:22:44Z", "ms": 2129469764285.538 }, "end": { "local": "2037-06-24T20:07:48+03:30", "utc": "2037-06-24T16:37:48Z", "ms": 2129474268345.075 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "2037-06-25", "window": { "start": { "local": "2037-06-25T18:52:51+03:30", "utc": "2037-06-25T15:22:51Z", "ms": 2129556170586.3826 }, "end": { "local": "2037-06-25T20:07:56+03:30", "utc": "2037-06-25T16:37:56Z", "ms": 2129560676415.218 } }, "covered_min": 51, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:50 on Wed 24 Jun to 19:43 on Thu 25 Jun.", "fact": "2037-06-24T17:20:16Z → 2037-06-25T16:13:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:08 on the 24th, 18:53–20:08 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 75 minutes on the 24th and 51 of 75 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1468 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Thursday 25 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-25", "confidence": "boundary" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Thursday 25 June. Trayodaśī runs from 20:50 on Wed 24 Jun to 19:43 on Thu 25 Jun and covers 51 of 75 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-06-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-06-26", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 179, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-06-26T19:02:04+03:30", "utc": "2037-06-26T15:32:04Z", "ms": 2129643124416.8057 }, "end": { "local": "2037-06-27T18:49:59+03:30", "utc": "2037-06-27T15:19:59Z", "ms": 2129728799178.3853 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-26T19:02:04+03:30", "utc": "2037-06-26T15:32:04Z", "ms": 2129643124416.8057 }, "end": { "local": "2037-06-27T18:49:59+03:30", "utc": "2037-06-27T15:19:59Z", "ms": 2129728799178.3853 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-06-26", "window": { "start": { "local": "2037-06-26T18:52:55+03:30", "utc": "2037-06-26T15:22:55Z", "ms": 2129642575207.7034 }, "end": { "local": "2037-06-26T20:08:03+03:30", "utc": "2037-06-26T16:38:03Z", "ms": 2129647083212.3972 } }, "covered_min": 66, "window_min": 75, "qualifies": true }, { "local_date": "2037-06-27", "window": { "start": { "local": "2037-06-27T18:52:58+03:30", "utc": "2037-06-27T15:22:58Z", "ms": 2129728978138.6091 }, "end": { "local": "2037-06-27T20:08:09+03:30", "utc": "2037-06-27T16:38:09Z", "ms": 2129733488723.6082 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:02 on Fri 26 Jun to 18:50 on Sat 27 Jun.", "fact": "2037-06-26T15:32:04Z → 2037-06-27T15:19:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:08 on the 26th, 18:53–20:08 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 66 of 75 minutes on the 26th and 0 of 75 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 179 s < 300 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Mashhad, 2037: Friday 26 June.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-06-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-06-26", "confidence": "boundary" } ], "quote": "In Mashhad, Vaṭa Sāvitrī Vrata 2037 falls on Friday 26 June. Pūrṇimā runs from 19:02 on Fri 26 Jun to 18:50 on Sat 27 Jun and covers 66 of 75 minutes of pradoṣa that evening. It is 2 min 59 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/vata-savitri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-07-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1600, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-06-30T21:30:04+03:30", "utc": "2037-06-30T18:00:04Z", "ms": 2129997603742.042 }, "end": { "local": "2037-07-01T23:24:23+03:30", "utc": "2037-07-01T19:54:23Z", "ms": 2130090863103.2776 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-06-30T21:30:04+03:30", "utc": "2037-06-30T18:00:04Z", "ms": 2129997603742.042 }, "end": { "local": "2037-07-01T23:24:23+03:30", "utc": "2037-07-01T19:54:23Z", "ms": 2130090863103.2776 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-06-30", "window": { "start": { "local": "2037-06-30T21:03:24+03:30", "utc": "2037-06-30T17:33:24Z", "ms": 2129996003978.0354 }, "end": { "local": "2037-06-30T21:03:24+03:30", "utc": "2037-06-30T17:33:24Z", "ms": 2129996003978.0354 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-01", "window": { "start": { "local": "2037-07-01T21:39:44+03:30", "utc": "2037-07-01T18:09:44Z", "ms": 2130084583620.189 }, "end": { "local": "2037-07-01T21:39:44+03:30", "utc": "2037-07-01T18:09:44Z", "ms": 2130084583620.189 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:30 on Tue 30 Jun to 23:24 on Wed 1 Jul.", "fact": "2037-06-30T18:00:04Z → 2037-07-01T19:54:23Z" }, { "step": "kaala", "text": "Moonrise is at 21:03 on the 30th and 21:40 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 30th and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1600 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Wednesday 1 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-01", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Wednesday 1 July. Caturthī runs from 21:30 on Tue 30 Jun to 23:24 on Wed 1 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-07-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-07-09", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24334, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-07-08T11:07:12+03:30", "utc": "2037-07-08T07:37:12Z", "ms": 2130651432022.715 }, "end": { "local": "2037-07-09T11:25:20+03:30", "utc": "2037-07-09T07:55:20Z", "ms": 2130738920325.9382 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-08T11:07:12+03:30", "utc": "2037-07-08T07:37:12Z", "ms": 2130651432022.715 }, "end": { "local": "2037-07-09T11:25:20+03:30", "utc": "2037-07-09T07:55:20Z", "ms": 2130738920325.9382 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-07-08", "window": { "start": { "local": "2037-07-08T04:21:38+03:30", "utc": "2037-07-08T00:51:38Z", "ms": 2130627097659.7964 }, "end": { "local": "2037-07-08T04:21:38+03:30", "utc": "2037-07-08T00:51:38Z", "ms": 2130627097659.7964 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-09", "window": { "start": { "local": "2037-07-09T04:22:13+03:30", "utc": "2037-07-09T00:52:13Z", "ms": 2130713532672.3662 }, "end": { "local": "2037-07-09T04:22:13+03:30", "utc": "2037-07-09T00:52:13Z", "ms": 2130713532672.3662 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:07 on Wed 8 Jul to 11:25 on Thu 9 Jul.", "fact": "2037-07-08T07:37:12Z → 2037-07-09T07:55:20Z" }, { "step": "kaala", "text": "Sunrise is at 04:22 on the 8th and 04:22 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24334 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Mashhad, 2037: Thursday 9 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-09", "confidence": "determinate" } ], "quote": "In Mashhad, Yoginī Ekādaśī 2037 falls on Thursday 9 July. Ekādaśī runs from 11:07 on Wed 8 Jul to 11:25 on Thu 9 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-07-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28229, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-07-10T11:00:30+03:30", "utc": "2037-07-10T07:30:30Z", "ms": 2130823830065.001 }, "end": { "local": "2037-07-11T09:54:54+03:30", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-10T11:00:30+03:30", "utc": "2037-07-10T07:30:30Z", "ms": 2130823830065.001 }, "end": { "local": "2037-07-11T09:54:54+03:30", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-10", "window": { "start": { "local": "2037-07-10T18:50:59+03:30", "utc": "2037-07-10T15:20:59Z", "ms": 2130852059270.5137 }, "end": { "local": "2037-07-10T20:07:19+03:30", "utc": "2037-07-10T16:37:19Z", "ms": 2130856638766.4946 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "2037-07-11", "window": { "start": { "local": "2037-07-11T18:50:38+03:30", "utc": "2037-07-11T15:20:38Z", "ms": 2130938437944.7112 }, "end": { "local": "2037-07-11T20:07:05+03:30", "utc": "2037-07-11T16:37:05Z", "ms": 2130943025313.9937 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:01 on Fri 10 Jul to 09:55 on Sat 11 Jul.", "fact": "2037-07-10T07:30:30Z → 2037-07-11T06:24:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:07 on the 10th, 18:51–20:07 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 76 of 76 minutes on the 10th and 0 of 76 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28229 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Friday 10 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-10", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Friday 10 July. Trayodaśī runs from 11:01 on Fri 10 Jul to 09:55 on Sat 11 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-07-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-07-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29513, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-07-11T09:54:54+03:30", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "end": { "local": "2037-07-12T08:13:14+03:30", "utc": "2037-07-12T04:43:14Z", "ms": 2130986593662.463 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-11T09:54:54+03:30", "utc": "2037-07-11T06:24:54Z", "ms": 2130906293772.0479 }, "end": { "local": "2037-07-12T08:13:14+03:30", "utc": "2037-07-12T04:43:14Z", "ms": 2130986593662.463 } }, "kaala": "nishita", "days": [ { "local_date": "2037-07-10", "window": { "start": { "local": "2037-07-10T23:13:12+03:30", "utc": "2037-07-10T19:43:12Z", "ms": 2130867792380.4424 }, "end": { "local": "2037-07-11T00:01:12+03:30", "utc": "2037-07-10T20:31:12Z", "ms": 2130870672380.4424 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-11", "window": { "start": { "local": "2037-07-11T23:13:21+03:30", "utc": "2037-07-11T19:43:21Z", "ms": 2130954200579.521 }, "end": { "local": "2037-07-12T00:01:21+03:30", "utc": "2037-07-11T20:31:21Z", "ms": 2130957080579.521 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:55 on Sat 11 Jul to 08:13 on Sun 12 Jul.", "fact": "2037-07-11T06:24:54Z → 2037-07-12T04:43:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 10th, 23:13–00:01 on the 11th.", "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 10th and 48 of 48 on the 11th.", "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 29513 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Saturday 11 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-11", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Saturday 11 July. Caturdaśī runs from 09:55 on Sat 11 Jul to 08:13 on Sun 12 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27919, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-07-14T03:28:03+03:30", "utc": "2037-07-13T23:58:03Z", "ms": 2131142282859.9478 }, "end": { "local": "2037-07-15T00:39:28+03:30", "utc": "2037-07-14T21:09:28Z", "ms": 2131218567566.3926 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-14T03:28:03+03:30", "utc": "2037-07-13T23:58:03Z", "ms": 2131142282859.9478 }, "end": { "local": "2037-07-15T00:39:28+03:30", "utc": "2037-07-14T21:09:28Z", "ms": 2131218567566.3926 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-14", "window": { "start": { "local": "2037-07-14T11:13:22+03:30", "utc": "2037-07-14T07:43:22Z", "ms": 2131170202314.859 }, "end": { "local": "2037-07-14T12:01:22+03:30", "utc": "2037-07-14T08:31:22Z", "ms": 2131173082314.859 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-15", "window": { "start": { "local": "2037-07-15T11:13:28+03:30", "utc": "2037-07-15T07:43:28Z", "ms": 2131256608213.4856 }, "end": { "local": "2037-07-15T12:01:28+03:30", "utc": "2037-07-15T08:31:28Z", "ms": 2131259488213.4856 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 03:28 on Tue 14 Jul to 00:39 on Wed 15 Jul.", "fact": "2037-07-13T23:58:03Z → 2037-07-14T21:09:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 14th, 11:13–12:01 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27919 s" }, { "step": "ruling", "text": "Rathayātrā, Mashhad, 2037: Tuesday 14 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-14", "confidence": "determinate" } ], "quote": "In Mashhad, Rathayātrā 2037 falls on Tuesday 14 July. Dvitīyā runs from 03:28 on Tue 14 Jul to 00:39 on Wed 15 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rathayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-07-16", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24381, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-07-15T21:43:40+03:30", "utc": "2037-07-15T18:13:40Z", "ms": 2131294420281.2258 }, "end": { "local": "2037-07-16T18:47:54+03:30", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-15T21:43:40+03:30", "utc": "2037-07-15T18:13:40Z", "ms": 2131294420281.2258 }, "end": { "local": "2037-07-16T18:47:54+03:30", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-15", "window": { "start": { "local": "2037-07-15T11:13:28+03:30", "utc": "2037-07-15T07:43:28Z", "ms": 2131256608213.4856 }, "end": { "local": "2037-07-15T12:01:28+03:30", "utc": "2037-07-15T08:31:28Z", "ms": 2131259488213.4856 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-16", "window": { "start": { "local": "2037-07-16T11:13:34+03:30", "utc": "2037-07-16T07:43:34Z", "ms": 2131343013597.5918 }, "end": { "local": "2037-07-16T12:01:34+03:30", "utc": "2037-07-16T08:31:34Z", "ms": 2131345893597.5918 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:44 on Wed 15 Jul to 18:48 on Thu 16 Jul.", "fact": "2037-07-15T18:13:40Z → 2037-07-16T15:17:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 15th, 11:14–12:02 on the 16th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24381 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Thursday 16 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-16", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Thursday 16 July. Caturthī runs from 21:44 on Wed 15 Jul to 18:48 on Thu 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14228, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-07-16T18:47:54+03:30", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "end": { "local": "2037-07-17T15:58:47+03:30", "utc": "2037-07-17T12:28:47Z", "ms": 2131446526713.7024 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-16T18:47:54+03:30", "utc": "2037-07-16T15:17:54Z", "ms": 2131370274214.6516 }, "end": { "local": "2037-07-17T15:58:47+03:30", "utc": "2037-07-17T12:28:47Z", "ms": 2131446526713.7024 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-16", "window": { "start": { "local": "2037-07-16T11:13:34+03:30", "utc": "2037-07-16T07:43:34Z", "ms": 2131343013597.5918 }, "end": { "local": "2037-07-16T12:01:34+03:30", "utc": "2037-07-16T08:31:34Z", "ms": 2131345893597.5918 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-17", "window": { "start": { "local": "2037-07-17T11:13:38+03:30", "utc": "2037-07-17T07:43:38Z", "ms": 2131429418450.8174 }, "end": { "local": "2037-07-17T12:01:38+03:30", "utc": "2037-07-17T08:31:38Z", "ms": 2131432298450.8174 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:48 on Thu 16 Jul to 15:59 on Fri 17 Jul.", "fact": "2037-07-16T15:17:54Z → 2037-07-17T12:28:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 16th, 11:14–12:02 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14228 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Mashhad, 2037: Friday 17 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-17", "confidence": "determinate" } ], "quote": "In Mashhad, Skanda Pañcamī 2037 falls on Friday 17 July. Pañcamī runs from 18:48 on Thu 16 Jul to 15:59 on Fri 17 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/skanda-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 651, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-07-18T13:22:08+03:30", "utc": "2037-07-18T09:52:08Z", "ms": 2131523528421.6797 }, "end": { "local": "2037-07-19T11:02:55+03:30", "utc": "2037-07-19T07:32:55Z", "ms": 2131601575252.0872 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-18T13:22:08+03:30", "utc": "2037-07-18T09:52:08Z", "ms": 2131523528421.6797 }, "end": { "local": "2037-07-19T11:02:55+03:30", "utc": "2037-07-19T07:32:55Z", "ms": 2131601575252.0872 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-18", "window": { "start": { "local": "2037-07-18T11:13:43+03:30", "utc": "2037-07-18T07:43:43Z", "ms": 2131515822758.8643 }, "end": { "local": "2037-07-18T12:01:43+03:30", "utc": "2037-07-18T08:31:43Z", "ms": 2131518702758.8643 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-07-19", "window": { "start": { "local": "2037-07-19T11:13:47+03:30", "utc": "2037-07-19T07:43:47Z", "ms": 2131602226509.623 }, "end": { "local": "2037-07-19T12:01:47+03:30", "utc": "2037-07-19T08:31:47Z", "ms": 2131605106509.623 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:22 on Sat 18 Jul to 11:03 on Sun 19 Jul.", "fact": "2037-07-18T09:52:08Z → 2037-07-19T07:32:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 18th, 11:14–12:02 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 651 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Mashhad, 2037: Sunday 19 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-19", "confidence": "determinate" } ], "quote": "In Mashhad, Vivasvat Saptamī 2037 falls on Sunday 19 July. Saptamī runs from 13:22 on Sat 18 Jul to 11:03 on Sun 19 Jul, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/vivasvat-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-07-23", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4370, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-07-22T06:24:16+03:30", "utc": "2037-07-22T02:54:16Z", "ms": 2131844055928.3923 }, "end": { "local": "2037-07-23T05:44:33+03:30", "utc": "2037-07-23T02:14:33Z", "ms": 2131928073483.6353 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-22T06:24:16+03:30", "utc": "2037-07-22T02:54:16Z", "ms": 2131844055928.3923 }, "end": { "local": "2037-07-23T05:44:33+03:30", "utc": "2037-07-23T02:14:33Z", "ms": 2131928073483.6353 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-07-22", "window": { "start": { "local": "2037-07-22T04:30:59+03:30", "utc": "2037-07-22T01:00:59Z", "ms": 2131837258794.0198 }, "end": { "local": "2037-07-22T04:30:59+03:30", "utc": "2037-07-22T01:00:59Z", "ms": 2131837258794.0198 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-07-23", "window": { "start": { "local": "2037-07-23T04:31:43+03:30", "utc": "2037-07-23T01:01:43Z", "ms": 2131923703350.3906 }, "end": { "local": "2037-07-23T04:31:43+03:30", "utc": "2037-07-23T01:01:43Z", "ms": 2131923703350.3906 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:24 on Wed 22 Jul to 05:45 on Thu 23 Jul.", "fact": "2037-07-22T02:54:16Z → 2037-07-23T02:14:33Z" }, { "step": "kaala", "text": "Sunrise is at 04:31 on the 22nd and 04:32 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4370 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Mashhad, 2037: Thursday 23 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-23", "confidence": "determinate" } ], "quote": "In Mashhad, Hariśayanī Ekādaśī 2037 falls on Thursday 23 July. Ekādaśī runs from 06:24 on Wed 22 Jul to 05:45 on Thu 23 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-07-24", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34223, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-07-24T05:32:58+03:30", "utc": "2037-07-24T02:02:58Z", "ms": 2132013777934.1511 }, "end": { "local": "2037-07-25T05:49:34+03:30", "utc": "2037-07-25T02:19:34Z", "ms": 2132101174001.1782 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-24T05:32:58+03:30", "utc": "2037-07-24T02:02:58Z", "ms": 2132013777934.1511 }, "end": { "local": "2037-07-25T05:49:34+03:30", "utc": "2037-07-25T02:19:34Z", "ms": 2132101174001.1782 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-23", "window": { "start": { "local": "2037-07-23T18:44:08+03:30", "utc": "2037-07-23T15:14:08Z", "ms": 2131974848185.4355 }, "end": { "local": "2037-07-23T20:02:35+03:30", "utc": "2037-07-23T16:32:35Z", "ms": 2131979554870.0073 } }, "covered_min": 0, "window_min": 78, "qualifies": false }, { "local_date": "2037-07-24", "window": { "start": { "local": "2037-07-24T18:43:25+03:30", "utc": "2037-07-24T15:13:25Z", "ms": 2132061204916.6465 }, "end": { "local": "2037-07-24T20:02:03+03:30", "utc": "2037-07-24T16:32:03Z", "ms": 2132065923417.6116 } }, "covered_min": 79, "window_min": 79, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:33 on Fri 24 Jul to 05:50 on Sat 25 Jul.", "fact": "2037-07-24T02:02:58Z → 2037-07-25T02:19:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:03 on the 23rd, 18:43–20:02 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 78 minutes on the 23rd and 79 of 79 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34223 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Friday 24 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-24", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Friday 24 July. Trayodaśī runs from 05:33 on Fri 24 Jul to 05:50 on Sat 25 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-07-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12524, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T11:13:57+03:30", "utc": "2037-07-26T07:43:57Z", "ms": 2132207036541.0176 }, "end": { "local": "2037-07-26T12:01:57+03:30", "utc": "2037-07-26T08:31:57Z", "ms": 2132209916541.0176 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T11:13:56+03:30", "utc": "2037-07-27T07:43:56Z", "ms": 2132293435611.8325 }, "end": { "local": "2037-07-27T12:01:56+03:30", "utc": "2037-07-27T08:31:56Z", "ms": 2132296315611.8325 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 26th, 11:14–12:02 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 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: paraviddha → only-day · margin 12524 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Mashhad, 2037: Sunday 26 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "guru-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-26", "confidence": "determinate" } ], "quote": "In Mashhad, Guru Pūrṇimā 2037 falls on Sunday 26 July. Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/guru-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29198, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T15:52:19+03:30", "utc": "2037-07-26T12:22:19Z", "ms": 2132223738833.9932 }, "end": { "local": "2037-07-26T18:41:54+03:30", "utc": "2037-07-26T15:11:54Z", "ms": 2132233913695.9768 } }, "covered_min": 170, "window_min": 170, "qualifies": true }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T15:51:50+03:30", "utc": "2037-07-27T12:21:50Z", "ms": 2132310109720.5461 }, "end": { "local": "2037-07-27T18:41:06+03:30", "utc": "2037-07-27T15:11:06Z", "ms": 2132320265793.022 } }, "covered_min": 0, "window_min": 169, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:52–18:42 on the 26th, 15:52–18:41 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 170 of 170 minutes on the 26th and 0 of 169 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29198 s" }, { "step": "ruling", "text": "Kokilā Vrata, Mashhad, 2037: Sunday 26 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kokila-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-26", "confidence": "determinate" } ], "quote": "In Mashhad, Kokilā Vrata 2037 falls on Sunday 26 July. Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/kokila-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37948, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-07-25", "window": { "start": { "local": "2037-07-25T18:42:40+03:30", "utc": "2037-07-25T15:12:40Z", "ms": 2132147560078.754 }, "end": { "local": "2037-07-25T20:01:31+03:30", "utc": "2037-07-25T16:31:31Z", "ms": 2132152290653.0613 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T18:41:54+03:30", "utc": "2037-07-26T15:11:54Z", "ms": 2132233913695.9768 }, "end": { "local": "2037-07-26T20:00:57+03:30", "utc": "2037-07-26T16:30:57Z", "ms": 2132238656593.9324 } }, "covered_min": 79, "window_min": 79, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:43–20:02 on the 25th, 18:42–20:01 on the 26th.", "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 79 minutes on the 25th and 79 of 79 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37948 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Mashhad, 2037: Sunday 26 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shiva-shayanotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-26", "confidence": "determinate" } ], "quote": "In Mashhad, Śiva Śayanotsava 2037 falls on Sunday 26 July. Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/shiva-shayanotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1270, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2037-07-26T06:33:58+03:30", "utc": "2037-07-26T03:03:58Z", "ms": 2132190238230.2563 }, "end": { "local": "2037-07-27T07:45:12+03:30", "utc": "2037-07-27T04:15:12Z", "ms": 2132280911999.6182 } }, "kaala": "udaya-3", "days": [ { "local_date": "2037-07-26", "window": { "start": { "local": "2037-07-26T04:33:59+03:30", "utc": "2037-07-26T01:03:59Z", "ms": 2132183039386.0586 }, "end": { "local": "2037-07-26T07:23:34+03:30", "utc": "2037-07-26T03:53:34Z", "ms": 2132193214248.0422 } }, "covered_min": 50, "window_min": 170, "qualifies": false }, { "local_date": "2037-07-27", "window": { "start": { "local": "2037-07-27T04:34:45+03:30", "utc": "2037-07-27T01:04:45Z", "ms": 2132269485430.6433 }, "end": { "local": "2037-07-27T07:24:02+03:30", "utc": "2037-07-27T03:54:02Z", "ms": 2132279641503.1191 } }, "covered_min": 169, "window_min": 169, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul.", "fact": "2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 04:34–07:24 on the 26th, 04:35–07:24 on the 27th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 50 of 170 minutes on the 26th and 169 of 169 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1270 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Mashhad, 2037: Monday 27 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-27", "confidence": "determinate" } ], "quote": "In Mashhad, Vyāsa Pūjā 2037 falls on Monday 27 July. Pūrṇimā runs from 06:34 on Sun 26 Jul to 07:45 on Mon 27 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/2037/vyasa-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31987, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-07-28T09:21:24+03:30", "utc": "2037-07-28T05:51:24Z", "ms": 2132373084283.9153 }, "end": { "local": "2037-07-29T11:19:26+03:30", "utc": "2037-07-29T07:49:26Z", "ms": 2132466566102.6804 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-07-28T09:21:24+03:30", "utc": "2037-07-28T05:51:24Z", "ms": 2132373084283.9153 }, "end": { "local": "2037-07-29T11:19:26+03:30", "utc": "2037-07-29T07:49:26Z", "ms": 2132466566102.6804 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-07-28", "window": { "start": { "local": "2037-07-28T19:38:36+03:30", "utc": "2037-07-28T16:08:36Z", "ms": 2132410115759.0132 }, "end": { "local": "2037-07-28T19:38:36+03:30", "utc": "2037-07-28T16:08:36Z", "ms": 2132410115759.0132 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-07-29", "window": { "start": { "local": "2037-07-29T20:12:34+03:30", "utc": "2037-07-29T16:42:34Z", "ms": 2132498553587.5288 }, "end": { "local": "2037-07-29T20:12:34+03:30", "utc": "2037-07-29T16:42:34Z", "ms": 2132498553587.5288 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 09:21 on Tue 28 Jul to 11:19 on Wed 29 Jul.", "fact": "2037-07-28T05:51:24Z → 2037-07-29T07:49:26Z" }, { "step": "kaala", "text": "Moonrise is at 19:39 on the 28th and 20:13 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31987 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Mashhad, 2037: Tuesday 28 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata-ashadha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal)." } ], "not_evaluated": "In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-28", "confidence": "determinate" } ], "quote": "In Mashhad, Aśūnya Śayana Vrata (Āṣāḍha) 2037 falls on Tuesday 28 July. Dvitīyā runs from 09:21 on Tue 28 Jul to 11:19 on Wed 29 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ashunya-shayana-vrata-ashadha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-07-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18799, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-07-30T13:34:23+03:30", "utc": "2037-07-30T10:04:23Z", "ms": 2132561062624.6616 }, "end": { "local": "2037-07-31T15:59:13+03:30", "utc": "2037-07-31T12:29:13Z", "ms": 2132656153052.2593 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-07-30T13:34:23+03:30", "utc": "2037-07-30T10:04:23Z", "ms": 2132561062624.6616 }, "end": { "local": "2037-07-31T15:59:13+03:30", "utc": "2037-07-31T12:29:13Z", "ms": 2132656153052.2593 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-07-30", "window": { "start": { "local": "2037-07-30T20:43:31+03:30", "utc": "2037-07-30T17:13:31Z", "ms": 2132586810977.7402 }, "end": { "local": "2037-07-30T20:43:31+03:30", "utc": "2037-07-30T17:13:31Z", "ms": 2132586810977.7402 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-07-31", "window": { "start": { "local": "2037-07-31T21:12:32+03:30", "utc": "2037-07-31T17:42:32Z", "ms": 2132674952313.4275 }, "end": { "local": "2037-07-31T21:12:32+03:30", "utc": "2037-07-31T17:42:32Z", "ms": 2132674952313.4275 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:34 on Thu 30 Jul to 15:59 on Fri 31 Jul.", "fact": "2037-07-30T10:04:23Z → 2037-07-31T12:29:13Z" }, { "step": "kaala", "text": "Moonrise is at 20:44 on the 30th and 21:13 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 30th and is not on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18799 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Thursday 30 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-07-30", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Thursday 30 July. Caturthī runs from 13:34 on Thu 30 Jul to 15:59 on Fri 31 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-08-07", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14618, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-08-07T00:39:50+03:30", "utc": "2037-08-06T21:09:50Z", "ms": 2133205789845.9272 }, "end": { "local": "2037-08-07T23:51:55+03:30", "utc": "2037-08-07T20:21:55Z", "ms": 2133289315003.5496 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-07T00:39:50+03:30", "utc": "2037-08-06T21:09:50Z", "ms": 2133205789845.9272 }, "end": { "local": "2037-08-07T23:51:55+03:30", "utc": "2037-08-07T20:21:55Z", "ms": 2133289315003.5496 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-08-07", "window": { "start": { "local": "2037-08-07T04:43:27+03:30", "utc": "2037-08-07T01:13:27Z", "ms": 2133220407373.0085 }, "end": { "local": "2037-08-07T04:43:27+03:30", "utc": "2037-08-07T01:13:27Z", "ms": 2133220407373.0085 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-08-08", "window": { "start": { "local": "2037-08-08T04:44:16+03:30", "utc": "2037-08-08T01:14:16Z", "ms": 2133306855689.4092 }, "end": { "local": "2037-08-08T04:44:16+03:30", "utc": "2037-08-08T01:14:16Z", "ms": 2133306855689.4092 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:40 on Fri 7 Aug to 23:52 on Fri 7 Aug.", "fact": "2037-08-06T21:09:50Z → 2037-08-07T20:21:55Z" }, { "step": "kaala", "text": "Sunrise is at 04:43 on the 7th and 04:44 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14618 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Mashhad, 2037: Friday 7 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-07", "confidence": "determinate" } ], "quote": "In Mashhad, Kāmikā Ekādaśī 2037 falls on Friday 7 August. Ekādaśī runs from 00:40 on Fri 7 Aug to 23:52 on Fri 7 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-08-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 979, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-08-08T22:19:30+03:30", "utc": "2037-08-08T18:49:30Z", "ms": 2133370169771.2173 }, "end": { "local": "2037-08-09T20:07:13+03:30", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-08T22:19:30+03:30", "utc": "2037-08-08T18:49:30Z", "ms": 2133370169771.2173 }, "end": { "local": "2037-08-09T20:07:13+03:30", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-08-08", "window": { "start": { "local": "2037-08-08T18:29:42+03:30", "utc": "2037-08-08T14:59:42Z", "ms": 2133356381725.9326 }, "end": { "local": "2037-08-08T19:51:45+03:30", "utc": "2037-08-08T16:21:45Z", "ms": 2133361304704.5388 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2037-08-09", "window": { "start": { "local": "2037-08-09T18:28:36+03:30", "utc": "2037-08-09T14:58:36Z", "ms": 2133442716407.3975 }, "end": { "local": "2037-08-09T19:50:55+03:30", "utc": "2037-08-09T16:20:55Z", "ms": 2133447654550.6077 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:19 on Sat 8 Aug to 20:07 on Sun 9 Aug.", "fact": "2037-08-08T18:49:30Z → 2037-08-09T16:37:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–19:52 on the 8th, 18:29–19:51 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 8th and 82 of 82 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 979 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Sunday 9 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-09", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Sunday 9 August. Trayodaśī runs from 22:19 on Sat 8 Aug to 20:07 on Sun 9 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-08-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11161, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-08-09T20:07:13+03:30", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "end": { "local": "2037-08-10T17:21:51+03:30", "utc": "2037-08-10T13:51:51Z", "ms": 2133525111255.492 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-09T20:07:13+03:30", "utc": "2037-08-09T16:37:13Z", "ms": 2133448633051.992 }, "end": { "local": "2037-08-10T17:21:51+03:30", "utc": "2037-08-10T13:51:51Z", "ms": 2133525111255.492 } }, "kaala": "nishita", "days": [ { "local_date": "2037-08-09", "window": { "start": { "local": "2037-08-09T23:13:14+03:30", "utc": "2037-08-09T19:43:14Z", "ms": 2133459794444.436 }, "end": { "local": "2037-08-10T00:01:14+03:30", "utc": "2037-08-09T20:31:14Z", "ms": 2133462674444.436 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-10", "window": { "start": { "local": "2037-08-10T23:13:05+03:30", "utc": "2037-08-10T19:43:05Z", "ms": 2133546185423.192 }, "end": { "local": "2037-08-11T00:01:05+03:30", "utc": "2037-08-10T20:31:05Z", "ms": 2133549065423.192 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:07 on Sun 9 Aug to 17:22 on Mon 10 Aug.", "fact": "2037-08-09T16:37:13Z → 2037-08-10T13:51:51Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 9th, 23:13–00:01 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11161 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Sunday 9 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": "2037-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-09", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Sunday 9 August. Caturdaśī runs from 20:07 on Sun 9 Aug to 17:22 on Mon 10 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14321, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-08-13T07:13:30+03:30", "utc": "2037-08-13T03:43:30Z", "ms": 2133747809682.0527 }, "end": { "local": "2037-08-14T03:44:38+03:30", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-13T07:13:30+03:30", "utc": "2037-08-13T03:43:30Z", "ms": 2133747809682.0527 }, "end": { "local": "2037-08-14T03:44:38+03:30", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-13", "window": { "start": { "local": "2037-08-13T11:12:11+03:30", "utc": "2037-08-13T07:42:11Z", "ms": 2133762130769.4526 }, "end": { "local": "2037-08-13T12:00:11+03:30", "utc": "2037-08-13T08:30:11Z", "ms": 2133765010769.4526 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-14", "window": { "start": { "local": "2037-08-14T11:12:00+03:30", "utc": "2037-08-14T07:42:00Z", "ms": 2133848519518.28 }, "end": { "local": "2037-08-14T12:00:00+03:30", "utc": "2037-08-14T08:30:00Z", "ms": 2133851399518.28 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:13 on Thu 13 Aug to 03:45 on Fri 14 Aug.", "fact": "2037-08-13T03:43:30Z → 2037-08-14T00:14:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 13th, 11:12–12:00 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14321 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Mashhad, 2037: Thursday 13 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-13", "confidence": "determinate" } ], "quote": "In Mashhad, Madhusravā Tṛtīyā (Hariyali Teej) 2037 falls on Thursday 13 August. Tṛtīyā runs from 07:13 on Thu 13 Aug to 03:45 on Fri 14 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/madhusrava-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-08-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26841, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-14T03:44:38+03:30", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "end": { "local": "2037-08-15T00:28:18+03:30", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-14T03:44:38+03:30", "utc": "2037-08-14T00:14:38Z", "ms": 2133821678495.3633 }, "end": { "local": "2037-08-15T00:28:18+03:30", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-14", "window": { "start": { "local": "2037-08-14T11:12:00+03:30", "utc": "2037-08-14T07:42:00Z", "ms": 2133848519518.28 }, "end": { "local": "2037-08-14T12:00:00+03:30", "utc": "2037-08-14T08:30:00Z", "ms": 2133851399518.28 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-15", "window": { "start": { "local": "2037-08-15T11:11:48+03:30", "utc": "2037-08-15T07:41:48Z", "ms": 2133934907721.0273 }, "end": { "local": "2037-08-15T11:59:48+03:30", "utc": "2037-08-15T08:29:48Z", "ms": 2133937787721.0273 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:45 on Fri 14 Aug to 00:28 on Sat 15 Aug.", "fact": "2037-08-14T00:14:38Z → 2037-08-14T20:58:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 14th, 11:12–12:00 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26841 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Friday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-14", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Friday 14 August. Caturthī runs from 03:45 on Fri 14 Aug to 00:28 on Sat 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34387, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-08-15T00:28:18+03:30", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "end": { "local": "2037-08-15T21:32:55+03:30", "utc": "2037-08-15T18:02:55Z", "ms": 2133972175002.4663 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-15T00:28:18+03:30", "utc": "2037-08-14T20:58:18Z", "ms": 2133896298109.2407 }, "end": { "local": "2037-08-15T21:32:55+03:30", "utc": "2037-08-15T18:02:55Z", "ms": 2133972175002.4663 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-14", "window": { "start": { "local": "2037-08-14T11:12:00+03:30", "utc": "2037-08-14T07:42:00Z", "ms": 2133848519518.28 }, "end": { "local": "2037-08-14T12:00:00+03:30", "utc": "2037-08-14T08:30:00Z", "ms": 2133851399518.28 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-08-15", "window": { "start": { "local": "2037-08-15T11:11:48+03:30", "utc": "2037-08-15T07:41:48Z", "ms": 2133934907721.0273 }, "end": { "local": "2037-08-15T11:59:48+03:30", "utc": "2037-08-15T08:29:48Z", "ms": 2133937787721.0273 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:28 on Sat 15 Aug to 21:33 on Sat 15 Aug.", "fact": "2037-08-14T20:58:18Z → 2037-08-15T18:02:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 14th, 11:12–12:00 on the 15th.", "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 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34387 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Mashhad, 2037: Saturday 15 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-15", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Pañcamī 2037 falls on Saturday 15 August. Pañcamī runs from 00:28 on Sat 15 Aug to 21:33 on Sat 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/naga-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-08-21", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37611, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-08-20T15:20:46+03:30", "utc": "2037-08-20T11:50:46Z", "ms": 2134381845668.0454 }, "end": { "local": "2037-08-21T15:56:51+03:30", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-20T15:20:46+03:30", "utc": "2037-08-20T11:50:46Z", "ms": 2134381845668.0454 }, "end": { "local": "2037-08-21T15:56:51+03:30", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-08-20", "window": { "start": { "local": "2037-08-20T04:53:55+03:30", "utc": "2037-08-20T01:23:55Z", "ms": 2134344235018.0073 }, "end": { "local": "2037-08-20T04:53:55+03:30", "utc": "2037-08-20T01:23:55Z", "ms": 2134344235018.0073 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-08-21", "window": { "start": { "local": "2037-08-21T04:54:43+03:30", "utc": "2037-08-21T01:24:43Z", "ms": 2134430682849.4111 }, "end": { "local": "2037-08-21T04:54:43+03:30", "utc": "2037-08-21T01:24:43Z", "ms": 2134430682849.4111 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:21 on Thu 20 Aug to 15:57 on Fri 21 Aug.", "fact": "2037-08-20T11:50:46Z → 2037-08-21T12:26:51Z" }, { "step": "kaala", "text": "Sunrise is at 04:54 on the 20th and 04:55 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37611 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Mashhad, 2037: Friday 21 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-21", "confidence": "determinate" } ], "quote": "In Mashhad, Putradā Ekādaśī 2037 falls on Friday 21 August. Ekādaśī runs from 15:21 on Thu 20 Aug to 15:57 on Fri 21 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-08-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14305, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-08-21T15:56:51+03:30", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "end": { "local": "2037-08-22T17:03:46+03:30", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-21T15:56:51+03:30", "utc": "2037-08-21T12:26:51Z", "ms": 2134470411156.6929 }, "end": { "local": "2037-08-22T17:03:46+03:30", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-21", "window": { "start": { "local": "2037-08-21T11:10:26+03:30", "utc": "2037-08-21T07:40:26Z", "ms": 2134453225966.6343 }, "end": { "local": "2037-08-21T11:58:26+03:30", "utc": "2037-08-21T08:28:26Z", "ms": 2134456105966.6343 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-08-22", "window": { "start": { "local": "2037-08-22T11:10:11+03:30", "utc": "2037-08-22T07:40:11Z", "ms": 2134539610626.8237 }, "end": { "local": "2037-08-22T11:58:11+03:30", "utc": "2037-08-22T08:28:11Z", "ms": 2134542490626.8237 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 15:57 on Fri 21 Aug to 17:04 on Sat 22 Aug.", "fact": "2037-08-21T12:26:51Z → 2037-08-22T13:33:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 21st, 11:10–11:58 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14305 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Mashhad, 2037: Saturday 22 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-22", "confidence": "determinate" } ], "quote": "In Mashhad, Dāmodara Dvādaśī 2037 falls on Saturday 22 August. Dvādaśī runs from 15:57 on Fri 21 Aug to 17:04 on Sat 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/damodara-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-08-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-22", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1500, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-08-22T17:03:46+03:30", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "end": { "local": "2037-08-23T18:36:31+03:30", "utc": "2037-08-23T15:06:31Z", "ms": 2134652791213.7295 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-22T17:03:46+03:30", "utc": "2037-08-22T13:33:46Z", "ms": 2134560825648.754 }, "end": { "local": "2037-08-23T18:36:31+03:30", "utc": "2037-08-23T15:06:31Z", "ms": 2134652791213.7295 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-08-22", "window": { "start": { "local": "2037-08-22T18:12:51+03:30", "utc": "2037-08-22T14:42:51Z", "ms": 2134564970671.0046 }, "end": { "local": "2037-08-22T19:38:38+03:30", "utc": "2037-08-22T16:08:38Z", "ms": 2134570118343.9468 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "2037-08-23", "window": { "start": { "local": "2037-08-23T18:11:31+03:30", "utc": "2037-08-23T14:41:31Z", "ms": 2134651291455.4194 }, "end": { "local": "2037-08-23T19:37:36+03:30", "utc": "2037-08-23T16:07:36Z", "ms": 2134656456029.0186 } }, "covered_min": 25, "window_min": 86, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:04 on Sat 22 Aug to 18:37 on Sun 23 Aug.", "fact": "2037-08-22T13:33:46Z → 2037-08-23T15:06:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:39 on the 22nd, 18:12–19:38 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 86 of 86 minutes on the 22nd and 25 of 86 on the 23rd.", "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 1500 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Saturday 22 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-22", "confidence": "boundary" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Saturday 22 August. Trayodaśī runs from 17:04 on Sat 22 Aug to 18:37 on Sun 23 Aug and covers all of pradoṣa that evening. It also reaches the next evening for 25 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/mashhad/festivals/2037/pradosha-vrata?on=2037-08-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16509, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-08-24T20:30:02+03:30", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-25T22:39:23+03:30", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2037-08-25T09:33:02+03:30", "utc": "2037-08-25T06:03:02Z", "ms": 2134792981964.6987 }, "end": { "local": "2037-08-25T22:39:23+03:30", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 } }, "kaala": "day", "days": [ { "local_date": "2037-08-24", "window": { "start": { "local": "2037-08-24T04:57:06+03:30", "utc": "2037-08-24T01:27:06Z", "ms": 2134690025757.412 }, "end": { "local": "2037-08-25T04:57:53+03:30", "utc": "2037-08-25T01:27:53Z", "ms": 2134776473203.5813 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2037-08-25", "window": { "start": { "local": "2037-08-25T04:57:53+03:30", "utc": "2037-08-25T01:27:53Z", "ms": 2134776473203.5813 }, "end": { "local": "2037-08-26T04:58:41+03:30", "utc": "2037-08-26T01:28:41Z", "ms": 2134862920560.524 } }, "covered_min": 786, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 20:30 on Mon 24 Aug to 22:39 on Tue 25 Aug. Its second half begins at 09:33 on Tue 25 Aug.", "fact": "2037-08-24T17:00:02Z → 2037-08-25T19:09:23Z · second half from 2037-08-25T06:03:02Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 04:57 on the 24th, and from 04:58 on the 25th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 0 of 1441 minutes on the 24th and 786 of 1441 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16509 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Mashhad, 2037: Tuesday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-25", "confidence": "determinate" } ], "quote": "In Mashhad, Rakṣā Bandhana (Rakhi) 2037 falls on Tuesday 25 August. The second half of Pūrṇimā runs from 09:33 on Tue 25 Aug to 22:39 on Tue 25 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/mashhad/festivals/2037/raksha-bandhana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30744, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-08-24T20:30:02+03:30", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-25T22:39:23+03:30", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2037-08-24T20:30:02+03:30", "utc": "2037-08-24T17:00:02Z", "ms": 2134746002185.3655 }, "end": { "local": "2037-08-25T22:39:23+03:30", "utc": "2037-08-25T19:09:23Z", "ms": 2134840163323.6274 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-24", "window": { "start": { "local": "2037-08-24T11:09:39+03:30", "utc": "2037-08-24T07:39:39Z", "ms": 2134712378613.0098 }, "end": { "local": "2037-08-24T11:57:39+03:30", "utc": "2037-08-24T08:27:39Z", "ms": 2134715258613.0098 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-08-25", "window": { "start": { "local": "2037-08-25T11:09:22+03:30", "utc": "2037-08-25T07:39:22Z", "ms": 2134798761972.7837 }, "end": { "local": "2037-08-25T11:57:22+03:30", "utc": "2037-08-25T08:27:22Z", "ms": 2134801641972.7837 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 20:30 on Mon 24 Aug to 22:39 on Tue 25 Aug.", "fact": "2037-08-24T17:00:02Z → 2037-08-25T19:09:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 24th, 11:09–11:57 on the 25th.", "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 24th and 48 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: unstated → only-day · margin 30744 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Mashhad, 2037: Tuesday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-25", "confidence": "determinate" } ], "quote": "In Mashhad, Ṛṣi Tarpaṇa 2037 falls on Tuesday 25 August. Pūrṇimā runs from 20:30 on Mon 24 Aug to 22:39 on Tue 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rishi-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22474, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-08-27T00:59:47+03:30", "utc": "2037-08-26T21:29:47Z", "ms": 2134934987073.375 }, "end": { "local": "2037-08-28T03:26:13+03:30", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-27T00:59:47+03:30", "utc": "2037-08-26T21:29:47Z", "ms": 2134934987073.375 }, "end": { "local": "2037-08-28T03:26:13+03:30", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-08-26", "window": { "start": { "local": "2037-08-26T18:45:13+03:30", "utc": "2037-08-26T15:15:13Z", "ms": 2134912512942.3708 }, "end": { "local": "2037-08-26T18:45:13+03:30", "utc": "2037-08-26T15:15:13Z", "ms": 2134912512942.3708 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-08-27", "window": { "start": { "local": "2037-08-27T19:14:43+03:30", "utc": "2037-08-27T15:44:43Z", "ms": 2135000683088.6345 }, "end": { "local": "2037-08-27T19:14:43+03:30", "utc": "2037-08-27T15:44:43Z", "ms": 2135000683088.6345 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 01:00 on Thu 27 Aug to 03:26 on Fri 28 Aug.", "fact": "2037-08-26T21:29:47Z → 2037-08-27T23:56:13Z" }, { "step": "kaala", "text": "Moonrise is at 18:45 on the 26th and 19:15 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22474 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Mashhad, 2037: Thursday 27 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunyasayana vrata (Dvitiya current at moonrise; if occurs on two successive days, it is to be observed on the second day)." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-27", "confidence": "determinate" } ], "quote": "In Mashhad, Aśūnya Śayana Vrata 2037 falls on Thursday 27 August. Dvitīyā runs from 01:00 on Thu 27 Aug to 03:26 on Fri 28 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ashunya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18913, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-08-28T03:26:13+03:30", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "end": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-28T03:26:13+03:30", "utc": "2037-08-27T23:56:13Z", "ms": 2135030173001.2095 }, "end": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-28", "window": { "start": { "local": "2037-08-28T11:08:30+03:30", "utc": "2037-08-28T07:38:30Z", "ms": 2135057909730.962 }, "end": { "local": "2037-08-28T11:56:30+03:30", "utc": "2037-08-28T08:26:30Z", "ms": 2135060789730.962 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T11:08:12+03:30", "utc": "2037-08-29T07:38:12Z", "ms": 2135144291603.955 }, "end": { "local": "2037-08-29T11:56:12+03:30", "utc": "2037-08-29T08:26:12Z", "ms": 2135147171603.955 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:26 on Fri 28 Aug to 05:53 on Sat 29 Aug.", "fact": "2037-08-27T23:56:13Z → 2037-08-29T02:22:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 28th, 11:08–11:56 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18913 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Mashhad, 2037: Friday 28 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kajjali-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 3 Kajjali trtiya, (paraviddha), Angaveta trtiya (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-28", "confidence": "determinate" } ], "quote": "In Mashhad, Kajjalī Tṛtīyā (Kajari Teej) 2037 falls on Friday 28 August. Tṛtīyā runs from 03:26 on Fri 28 Aug to 05:53 on Sat 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/kajjali-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25959, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T08:13:17+03:30", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T08:13:17+03:30", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 } }, "kaala": "sayahna", "days": [ { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T15:26:53+03:30", "utc": "2037-08-29T11:56:53Z", "ms": 2135159813277.8496 }, "end": { "local": "2037-08-29T18:03:21+03:30", "utc": "2037-08-29T14:33:21Z", "ms": 2135169201060.446 } }, "covered_min": 156, "window_min": 156, "qualifies": true }, { "local_date": "2037-08-30", "window": { "start": { "local": "2037-08-30T15:25:56+03:30", "utc": "2037-08-30T11:55:56Z", "ms": 2135246155520.6511 }, "end": { "local": "2037-08-30T18:01:57+03:30", "utc": "2037-08-30T14:31:57Z", "ms": 2135255517100.3198 } }, "covered_min": 0, "window_min": 156, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:53 on Sat 29 Aug to 08:13 on Sun 30 Aug.", "fact": "2037-08-29T02:22:59Z → 2037-08-30T04:43:17Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:27–18:03 on the 29th, 15:26–18:02 on the 30th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 156 of 156 minutes on the 29th and 0 of 156 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25959 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Mashhad, 2037: Saturday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bahula-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day)." } ], "kaala": "sayahna", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-29", "confidence": "determinate" } ], "quote": "In Mashhad, Bahulā Caturthī 2037 falls on Saturday 29 August. Caturthī runs from 05:53 on Sat 29 Aug to 08:13 on Sun 30 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/bahula-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-08-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36600, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T08:13:17+03:30", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-29T05:52:59+03:30", "utc": "2037-08-29T02:22:59Z", "ms": 2135125378854.1982 }, "end": { "local": "2037-08-30T08:13:17+03:30", "utc": "2037-08-30T04:43:17Z", "ms": 2135220196615.9248 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-08-28", "window": { "start": { "local": "2037-08-28T19:42:58+03:30", "utc": "2037-08-28T16:12:58Z", "ms": 2135088778393.9836 }, "end": { "local": "2037-08-28T19:42:58+03:30", "utc": "2037-08-28T16:12:58Z", "ms": 2135088778393.9836 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-08-29", "window": { "start": { "local": "2037-08-29T20:10:58+03:30", "utc": "2037-08-29T16:40:58Z", "ms": 2135176857750.585 }, "end": { "local": "2037-08-29T20:10:58+03:30", "utc": "2037-08-29T16:40:58Z", "ms": 2135176857750.585 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:53 on Sat 29 Aug to 08:13 on Sun 30 Aug.", "fact": "2037-08-29T02:22:59Z → 2037-08-30T04:43:17Z" }, { "step": "kaala", "text": "Moonrise is at 19:43 on the 28th and 20:11 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 28th and is on the 29th.", "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 36600 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Saturday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-08-29", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Saturday 29 August. Caturthī runs from 05:53 on Sat 29 Aug to 08:13 on Sun 30 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-08-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 389, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-08-31T10:19:07+03:30", "utc": "2037-08-31T06:49:07Z", "ms": 2135314147373.6814 }, "end": { "local": "2037-09-01T12:01:44+03:30", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-08-31T10:19:07+03:30", "utc": "2037-08-31T06:49:07Z", "ms": 2135314147373.6814 }, "end": { "local": "2037-09-01T12:01:44+03:30", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-08-31", "window": { "start": { "local": "2037-08-31T11:07:34+03:30", "utc": "2037-08-31T07:37:34Z", "ms": 2135317054391.0918 }, "end": { "local": "2037-08-31T11:55:34+03:30", "utc": "2037-08-31T08:25:34Z", "ms": 2135319934391.0918 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-01", "window": { "start": { "local": "2037-09-01T11:07:15+03:30", "utc": "2037-09-01T07:37:15Z", "ms": 2135403435342.3198 }, "end": { "local": "2037-09-01T11:55:15+03:30", "utc": "2037-09-01T08:25:15Z", "ms": 2135406315342.3198 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 10:19 on Mon 31 Aug to 12:02 on Tue 1 Sep.", "fact": "2037-08-31T06:49:07Z → 2037-09-01T08:31:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 31st, 11:07–11:55 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 389 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Mashhad, 2037: Tuesday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-01", "confidence": "determinate" } ], "quote": "In Mashhad, Hala Ṣaṣṭhī 2037 falls on Tuesday 1 September. Ṣaṣṭhī runs from 10:19 on Mon 31 Aug to 12:02 on Tue 1 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/mashhad/festivals/2037/hala-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33803, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-09-02T13:12:25+03:30", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "end": { "local": "2037-09-03T13:43:37+03:30", "utc": "2037-09-03T10:13:37Z", "ms": 2135585617187.988 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-02T13:12:25+03:30", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "end": { "local": "2037-09-03T13:43:37+03:30", "utc": "2037-09-03T10:13:37Z", "ms": 2135585617187.988 } }, "kaala": "nishita", "days": [ { "local_date": "2037-09-02", "window": { "start": { "local": "2037-09-02T23:07:19+03:30", "utc": "2037-09-02T19:37:19Z", "ms": 2135533039453.1472 }, "end": { "local": "2037-09-02T23:55:19+03:30", "utc": "2037-09-02T20:25:19Z", "ms": 2135535919453.1472 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-03", "window": { "start": { "local": "2037-09-03T23:07:00+03:30", "utc": "2037-09-03T19:37:00Z", "ms": 2135619419866.5894 }, "end": { "local": "2037-09-03T23:55:00+03:30", "utc": "2037-09-03T20:25:00Z", "ms": 2135622299866.5894 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:12 on Wed 2 Sep to 13:44 on Thu 3 Sep.", "fact": "2037-09-02T09:42:25Z → 2037-09-03T10:13:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:07–23:55 on the 2nd, 23:07–23:55 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33803 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Mashhad, 2037: Wednesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-02", "confidence": "determinate" } ], "quote": "In Mashhad, Janmāṣṭamī 2037 falls on Wednesday 2 September. Aṣṭamī runs from 13:12 on Wed 2 Sep to 13:44 on Thu 3 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/janmashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 389, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-09-01T12:01:44+03:30", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "end": { "local": "2037-09-02T13:12:25+03:30", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-01T12:01:44+03:30", "utc": "2037-09-01T08:31:44Z", "ms": 2135406704453.5115 }, "end": { "local": "2037-09-02T13:12:25+03:30", "utc": "2037-09-02T09:42:25Z", "ms": 2135497344831.2034 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-01", "window": { "start": { "local": "2037-09-01T11:07:15+03:30", "utc": "2037-09-01T07:37:15Z", "ms": 2135403435342.3198 }, "end": { "local": "2037-09-01T11:55:15+03:30", "utc": "2037-09-01T08:25:15Z", "ms": 2135406315342.3198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-02", "window": { "start": { "local": "2037-09-02T11:06:56+03:30", "utc": "2037-09-02T07:36:56Z", "ms": 2135489816023.2717 }, "end": { "local": "2037-09-02T11:54:56+03:30", "utc": "2037-09-02T08:24:56Z", "ms": 2135492696023.2717 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 12:02 on Tue 1 Sep to 13:12 on Wed 2 Sep.", "fact": "2037-09-01T08:31:44Z → 2037-09-02T09:42:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 1st, 11:07–11:55 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 389 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Mashhad, 2037: Wednesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-01", "confidence": "determinate" } ], "quote": "In Mashhad, Śītalā Saptamī 2037 falls on Wednesday 2 September. Saptamī runs from 12:02 on Tue 1 Sep to 13:12 on Wed 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/shitala-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-09-06", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20166, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-09-05T12:29:42+03:30", "utc": "2037-09-05T08:59:42Z", "ms": 2135753981816.954 }, "end": { "local": "2037-09-06T10:43:24+03:30", "utc": "2037-09-06T07:13:24Z", "ms": 2135834003603.6538 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-05T12:29:42+03:30", "utc": "2037-09-05T08:59:42Z", "ms": 2135753981816.954 }, "end": { "local": "2037-09-06T10:43:24+03:30", "utc": "2037-09-06T07:13:24Z", "ms": 2135834003603.6538 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-09-05", "window": { "start": { "local": "2037-09-05T05:06:31+03:30", "utc": "2037-09-05T01:36:31Z", "ms": 2135727390530.4656 }, "end": { "local": "2037-09-05T05:06:31+03:30", "utc": "2037-09-05T01:36:31Z", "ms": 2135727390530.4656 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-06", "window": { "start": { "local": "2037-09-06T05:07:17+03:30", "utc": "2037-09-06T01:37:17Z", "ms": 2135813837316.286 }, "end": { "local": "2037-09-06T05:07:17+03:30", "utc": "2037-09-06T01:37:17Z", "ms": 2135813837316.286 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:30 on Sat 5 Sep to 10:43 on Sun 6 Sep.", "fact": "2037-09-05T08:59:42Z → 2037-09-06T07:13:24Z" }, { "step": "kaala", "text": "Sunrise is at 05:07 on the 5th and 05:07 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20166 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Mashhad, 2037: Sunday 6 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-06", "confidence": "determinate" } ], "quote": "In Mashhad, Ajā Ekādaśī 2037 falls on Sunday 6 September. Ekādaśī runs from 12:30 on Sat 5 Sep to 10:43 on Sun 6 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-09-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34510, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-09-07T08:15:18+03:30", "utc": "2037-09-07T04:45:18Z", "ms": 2135911517818.0137 }, "end": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-07T08:15:18+03:30", "utc": "2037-09-07T04:45:18Z", "ms": 2135911517818.0137 }, "end": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-07", "window": { "start": { "local": "2037-09-07T17:50:28+03:30", "utc": "2037-09-07T14:20:28Z", "ms": 2135946027907.2188 }, "end": { "local": "2037-09-07T19:20:55+03:30", "utc": "2037-09-07T15:50:55Z", "ms": 2135951454966.448 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T17:49:00+03:30", "utc": "2037-09-08T14:19:00Z", "ms": 2136032339995.0662 }, "end": { "local": "2037-09-08T19:19:45+03:30", "utc": "2037-09-08T15:49:45Z", "ms": 2136037785010.1572 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:15 on Mon 7 Sep to 05:12 on Tue 8 Sep.", "fact": "2037-09-07T04:45:18Z → 2037-09-08T01:42:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:21 on the 7th, 17:49–19:20 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 90 of 90 minutes on the 7th and 0 of 91 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34510 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Monday 7 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-07", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Monday 7 September. Trayodaśī runs from 08:15 on Mon 7 Sep to 05:12 on Tue 8 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-09-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22944, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T01:42:09+03:30", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T01:42:09+03:30", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-07", "window": { "start": { "local": "2037-09-07T17:50:28+03:30", "utc": "2037-09-07T14:20:28Z", "ms": 2135946027907.2188 }, "end": { "local": "2037-09-07T19:20:55+03:30", "utc": "2037-09-07T15:50:55Z", "ms": 2135951454966.448 } }, "covered_min": 0, "window_min": 90, "qualifies": false }, { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T17:49:00+03:30", "utc": "2037-09-08T14:19:00Z", "ms": 2136032339995.0662 }, "end": { "local": "2037-09-08T19:19:45+03:30", "utc": "2037-09-08T15:49:45Z", "ms": 2136037785010.1572 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:12 on Tue 8 Sep to 01:42 on Wed 9 Sep.", "fact": "2037-09-08T01:42:02Z → 2037-09-08T22:12:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:21 on the 7th, 17:49–19:20 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 90 minutes on the 7th and 91 of 91 on the 8th.", "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 22944 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Mashhad, 2037: Tuesday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-08", "confidence": "determinate" } ], "quote": "In Mashhad, Aghora Caturdaśī 2037 falls on Tuesday 8 September. Caturdaśī runs from 05:12 on Tue 8 Sep to 01:42 on Wed 9 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/aghora-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-09-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6530, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T01:42:09+03:30", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-08T05:12:02+03:30", "utc": "2037-09-08T01:42:02Z", "ms": 2135986922017.1516 }, "end": { "local": "2037-09-09T01:42:09+03:30", "utc": "2037-09-08T22:12:09Z", "ms": 2136060729161.0806 } }, "kaala": "nishita", "days": [ { "local_date": "2037-09-07", "window": { "start": { "local": "2037-09-07T23:05:39+03:30", "utc": "2037-09-07T19:35:39Z", "ms": 2135964939379.3281 }, "end": { "local": "2037-09-07T23:53:39+03:30", "utc": "2037-09-07T20:23:39Z", "ms": 2135967819379.3281 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-08", "window": { "start": { "local": "2037-09-08T23:05:19+03:30", "utc": "2037-09-08T19:35:19Z", "ms": 2136051318801.6572 }, "end": { "local": "2037-09-08T23:53:19+03:30", "utc": "2037-09-08T20:23:19Z", "ms": 2136054198801.6572 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:12 on Tue 8 Sep to 01:42 on Wed 9 Sep.", "fact": "2037-09-08T01:42:02Z → 2037-09-08T22:12:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:06–23:54 on the 7th, 23:05–23:53 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6530 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Tuesday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-08", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Tuesday 8 September. Caturdaśī runs from 05:12 on Tue 8 Sep to 01:42 on Wed 9 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-09-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22237, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-09-09T21:55:32+03:30", "utc": "2037-09-09T18:25:32Z", "ms": 2136133531877.5342 }, "end": { "local": "2037-09-10T18:02:51+03:30", "utc": "2037-09-10T14:32:51Z", "ms": 2136205971056.1753 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-09T21:55:32+03:30", "utc": "2037-09-09T18:25:32Z", "ms": 2136133531877.5342 }, "end": { "local": "2037-09-10T18:02:51+03:30", "utc": "2037-09-10T14:32:51Z", "ms": 2136205971056.1753 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-09", "window": { "start": { "local": "2037-09-09T11:04:35+03:30", "utc": "2037-09-09T07:34:35Z", "ms": 2136094474693.712 }, "end": { "local": "2037-09-09T11:52:35+03:30", "utc": "2037-09-09T08:22:35Z", "ms": 2136097354693.712 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-10", "window": { "start": { "local": "2037-09-10T11:04:14+03:30", "utc": "2037-09-10T07:34:14Z", "ms": 2136180853822.8755 }, "end": { "local": "2037-09-10T11:52:14+03:30", "utc": "2037-09-10T08:22:14Z", "ms": 2136183733822.8755 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:56 on Wed 9 Sep to 18:03 on Thu 10 Sep.", "fact": "2037-09-09T18:25:32Z → 2037-09-10T14:32:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 9th, 11:04–11:52 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22237 s" }, { "step": "ruling", "text": "Rudra Vrata, Mashhad, 2037: Thursday 10 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-10", "confidence": "determinate" } ], "quote": "In Mashhad, Rudra Vrata 2037 falls on Thursday 10 September. Pratipadā runs from 21:56 on Wed 9 Sep to 18:03 on Thu 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rudra-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1213, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-09-12T10:43:18+03:30", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "end": { "local": "2037-09-13T07:37:40+03:30", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-12T10:43:18+03:30", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "end": { "local": "2037-09-13T07:37:40+03:30", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-12", "window": { "start": { "local": "2037-09-12T11:03:32+03:30", "utc": "2037-09-12T07:33:32Z", "ms": 2136353611712.3037 }, "end": { "local": "2037-09-12T11:51:32+03:30", "utc": "2037-09-12T08:21:32Z", "ms": 2136356491712.3037 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-13", "window": { "start": { "local": "2037-09-13T11:03:11+03:30", "utc": "2037-09-13T07:33:11Z", "ms": 2136439990502.0293 }, "end": { "local": "2037-09-13T11:51:11+03:30", "utc": "2037-09-13T08:21:11Z", "ms": 2136442870502.0293 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:43 on Sat 12 Sep to 07:38 on Sun 13 Sep.", "fact": "2037-09-12T07:13:18Z → 2037-09-13T04:07:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 12th, 11:03–11:51 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1213 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Mashhad, 2037: Saturday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-12", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṇeśa Caturthī 2037 falls on Saturday 12 September. Caturthī runs from 10:43 on Sat 12 Sep to 07:38 on Sun 13 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/ganesha-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1213, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2037-09-11T14:15:08+03:30", "utc": "2037-09-11T10:45:08Z", "ms": 2136278708156.28 }, "end": { "local": "2037-09-12T10:43:18+03:30", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-11T14:15:08+03:30", "utc": "2037-09-11T10:45:08Z", "ms": 2136278708156.28 }, "end": { "local": "2037-09-12T10:43:18+03:30", "utc": "2037-09-12T07:13:18Z", "ms": 2136352398261.7913 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-11", "window": { "start": { "local": "2037-09-11T11:03:53+03:30", "utc": "2037-09-11T07:33:53Z", "ms": 2136267232824.335 }, "end": { "local": "2037-09-11T11:51:53+03:30", "utc": "2037-09-11T08:21:53Z", "ms": 2136270112824.335 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-09-12", "window": { "start": { "local": "2037-09-12T11:03:32+03:30", "utc": "2037-09-12T07:33:32Z", "ms": 2136353611712.3037 }, "end": { "local": "2037-09-12T11:51:32+03:30", "utc": "2037-09-12T08:21:32Z", "ms": 2136356491712.3037 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:15 on Fri 11 Sep to 10:43 on Sat 12 Sep.", "fact": "2037-09-11T10:45:08Z → 2037-09-12T07:13:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 11th, 11:04–11:52 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 1213 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Mashhad, 2037: Saturday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-12", "confidence": "determinate" } ], "quote": "In Mashhad, Haritālikā Vrata (Hartalika Teej) 2037 falls on Saturday 12 September. Tṛtīyā runs from 14:15 on Fri 11 Sep to 10:43 on Sat 12 Sep, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/haritalika-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12330, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-09-13T07:37:40+03:30", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "end": { "local": "2037-09-14T05:07:20+03:30", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-13T07:37:40+03:30", "utc": "2037-09-13T04:07:40Z", "ms": 2136427660055.5786 }, "end": { "local": "2037-09-14T05:07:20+03:30", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-13", "window": { "start": { "local": "2037-09-13T11:03:11+03:30", "utc": "2037-09-13T07:33:11Z", "ms": 2136439990502.0293 }, "end": { "local": "2037-09-13T11:51:11+03:30", "utc": "2037-09-13T08:21:11Z", "ms": 2136442870502.0293 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-14", "window": { "start": { "local": "2037-09-14T11:02:49+03:30", "utc": "2037-09-14T07:32:49Z", "ms": 2136526369209.9893 }, "end": { "local": "2037-09-14T11:50:49+03:30", "utc": "2037-09-14T08:20:49Z", "ms": 2136529249209.9893 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 07:38 on Sun 13 Sep to 05:07 on Mon 14 Sep.", "fact": "2037-09-13T04:07:40Z → 2037-09-14T01:37:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 13th, 11:03–11:51 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 12330 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Mashhad, 2037: Sunday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-13", "confidence": "determinate" } ], "quote": "In Mashhad, Ṛṣi Pañcamī 2037 falls on Sunday 13 September. Pañcamī runs from 07:38 on Sun 13 Sep to 05:07 on Mon 14 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/rishi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21330, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-09-14T05:07:20+03:30", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "end": { "local": "2037-09-15T03:19:27+03:30", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-14T05:07:20+03:30", "utc": "2037-09-14T01:37:20Z", "ms": 2136505039584.3884 }, "end": { "local": "2037-09-15T03:19:27+03:30", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-14", "window": { "start": { "local": "2037-09-14T11:02:49+03:30", "utc": "2037-09-14T07:32:49Z", "ms": 2136526369209.9893 }, "end": { "local": "2037-09-14T11:50:49+03:30", "utc": "2037-09-14T08:20:49Z", "ms": 2136529249209.9893 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-15", "window": { "start": { "local": "2037-09-15T11:02:28+03:30", "utc": "2037-09-15T07:32:28Z", "ms": 2136612747854.246 }, "end": { "local": "2037-09-15T11:50:28+03:30", "utc": "2037-09-15T08:20:28Z", "ms": 2136615627854.246 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:07 on Mon 14 Sep to 03:19 on Tue 15 Sep.", "fact": "2037-09-14T01:37:20Z → 2037-09-14T23:49:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 14th, 11:02–11:50 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21330 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Mashhad, 2037: Monday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-14", "confidence": "determinate" } ], "quote": "In Mashhad, Sūrya Ṣaṣṭhī (Bhādrapada) 2037 falls on Monday 14 September. Ṣaṣṭhī runs from 05:07 on Mon 14 Sep to 03:19 on Tue 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/surya-shashthi-bhadrapada", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27781, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-09-15T03:19:27+03:30", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "end": { "local": "2037-09-16T02:18:32+03:30", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-15T03:19:27+03:30", "utc": "2037-09-14T23:49:27Z", "ms": 2136584967268.258 }, "end": { "local": "2037-09-16T02:18:32+03:30", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-15", "window": { "start": { "local": "2037-09-15T11:02:28+03:30", "utc": "2037-09-15T07:32:28Z", "ms": 2136612747854.246 }, "end": { "local": "2037-09-15T11:50:28+03:30", "utc": "2037-09-15T08:20:28Z", "ms": 2136615627854.246 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-16", "window": { "start": { "local": "2037-09-16T11:02:06+03:30", "utc": "2037-09-16T07:32:06Z", "ms": 2136699126453.0686 }, "end": { "local": "2037-09-16T11:50:06+03:30", "utc": "2037-09-16T08:20:06Z", "ms": 2136702006453.0686 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:19 on Tue 15 Sep to 02:19 on Wed 16 Sep.", "fact": "2037-09-14T23:49:27Z → 2037-09-15T22:48:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 15th, 11:02–11:50 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27781 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Mashhad, 2037: Tuesday 15 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-15", "confidence": "determinate" } ], "quote": "In Mashhad, Muktābharaṇa Vrata 2037 falls on Tuesday 15 September. Saptamī runs from 03:19 on Tue 15 Sep to 02:19 on Wed 16 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/muktabharana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31414, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-09-16T02:18:32+03:30", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "end": { "local": "2037-09-17T02:05:44+03:30", "utc": "2037-09-16T22:35:44Z", "ms": 2136753344416.4707 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-16T02:18:32+03:30", "utc": "2037-09-15T22:48:32Z", "ms": 2136667712286.5186 }, "end": { "local": "2037-09-17T02:05:44+03:30", "utc": "2037-09-16T22:35:44Z", "ms": 2136753344416.4707 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-16", "window": { "start": { "local": "2037-09-16T11:02:06+03:30", "utc": "2037-09-16T07:32:06Z", "ms": 2136699126453.0686 }, "end": { "local": "2037-09-16T11:50:06+03:30", "utc": "2037-09-16T08:20:06Z", "ms": 2136702006453.0686 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-17", "window": { "start": { "local": "2037-09-17T11:01:45+03:30", "utc": "2037-09-17T07:31:45Z", "ms": 2136785505027.269 }, "end": { "local": "2037-09-17T11:49:45+03:30", "utc": "2037-09-17T08:19:45Z", "ms": 2136788385027.269 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:19 on Wed 16 Sep to 02:06 on Thu 17 Sep.", "fact": "2037-09-15T22:48:32Z → 2037-09-16T22:35:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 16th, 11:02–11:50 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31414 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Mashhad, 2037: Wednesday 16 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-16", "confidence": "determinate" } ], "quote": "In Mashhad, Rādhāṣṭamī 2037 falls on Wednesday 16 September. Aṣṭamī runs from 02:19 on Wed 16 Sep to 02:06 on Thu 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/radhashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-09-20", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1081, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-09-19T03:51:29+03:30", "utc": "2037-09-19T00:21:29Z", "ms": 2136932489148.8794 }, "end": { "local": "2037-09-20T05:36:14+03:30", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-19T03:51:29+03:30", "utc": "2037-09-19T00:21:29Z", "ms": 2136932489148.8794 }, "end": { "local": "2037-09-20T05:36:14+03:30", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-09-19", "window": { "start": { "local": "2037-09-19T05:17:26+03:30", "utc": "2037-09-19T01:47:26Z", "ms": 2136937645851.9714 }, "end": { "local": "2037-09-19T05:17:26+03:30", "utc": "2037-09-19T01:47:26Z", "ms": 2136937645851.9714 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-09-20", "window": { "start": { "local": "2037-09-20T05:18:13+03:30", "utc": "2037-09-20T01:48:13Z", "ms": 2137024092925.131 }, "end": { "local": "2037-09-20T05:18:13+03:30", "utc": "2037-09-20T01:48:13Z", "ms": 2137024092925.131 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:51 on Sat 19 Sep to 05:36 on Sun 20 Sep.", "fact": "2037-09-19T00:21:29Z → 2037-09-20T02:06:14Z" }, { "step": "kaala", "text": "Sunrise is at 05:17 on the 19th and 05:18 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 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both sunrises qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1081 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Mashhad, 2037: Sunday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-20", "confidence": "determinate" } ], "quote": "In Mashhad, Parivartanī Ekādaśī 2037 falls on Sunday 20 September. Ekādaśī runs from 03:51 on Sat 19 Sep to 05:36 on Sun 20 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11794, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-09-20T05:36:14+03:30", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "end": { "local": "2037-09-21T07:43:46+03:30", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-20T05:36:14+03:30", "utc": "2037-09-20T02:06:14Z", "ms": 2137025173883.2246 }, "end": { "local": "2037-09-21T07:43:46+03:30", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-09-20", "window": { "start": { "local": "2037-09-20T11:00:41+03:30", "utc": "2037-09-20T07:30:41Z", "ms": 2137044640813.1216 }, "end": { "local": "2037-09-20T11:48:41+03:30", "utc": "2037-09-20T08:18:41Z", "ms": 2137047520813.1216 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-09-21", "window": { "start": { "local": "2037-09-21T11:00:20+03:30", "utc": "2037-09-21T07:30:20Z", "ms": 2137131019503.213 }, "end": { "local": "2037-09-21T11:48:20+03:30", "utc": "2037-09-21T08:18:20Z", "ms": 2137133899503.213 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:36 on Sun 20 Sep to 07:44 on Mon 21 Sep.", "fact": "2037-09-20T02:06:14Z → 2037-09-21T04:13:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 20th, 11:00–11:48 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 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: unstated → only-day · margin 11794 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Mashhad, 2037: Sunday 20 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": "2037-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-20", "confidence": "determinate" } ], "quote": "In Mashhad, Vāmana Jayantī 2037 falls on Sunday 20 September. Dvādaśī runs from 05:36 on Sun 20 Sep to 07:44 on Mon 21 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vamana-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-09-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26571, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-09-21T07:43:46+03:30", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "end": { "local": "2037-09-22T10:05:18+03:30", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-21T07:43:46+03:30", "utc": "2037-09-21T04:13:46Z", "ms": 2137119225843.9622 }, "end": { "local": "2037-09-22T10:05:18+03:30", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-09-21", "window": { "start": { "local": "2037-09-21T17:29:39+03:30", "utc": "2037-09-21T13:59:39Z", "ms": 2137154378914.3604 }, "end": { "local": "2037-09-21T19:04:20+03:30", "utc": "2037-09-21T15:34:20Z", "ms": 2137160060041.4722 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2037-09-22", "window": { "start": { "local": "2037-09-22T17:28:09+03:30", "utc": "2037-09-22T13:58:09Z", "ms": 2137240689189.5198 }, "end": { "local": "2037-09-22T19:03:09+03:30", "utc": "2037-09-22T15:33:09Z", "ms": 2137246388599.906 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:44 on Mon 21 Sep to 10:05 on Tue 22 Sep.", "fact": "2037-09-21T04:13:46Z → 2037-09-22T06:35:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:30–19:04 on the 21st, 17:28–19:03 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 21st and 0 of 95 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26571 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Monday 21 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-21", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Monday 21 September. Trayodaśī runs from 07:44 on Mon 21 Sep to 10:05 on Tue 22 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-09-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8390, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-09-22T10:05:18+03:30", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "end": { "local": "2037-09-23T12:33:17+03:30", "utc": "2037-09-23T09:03:17Z", "ms": 2137309397100.2258 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2037-09-22T10:05:18+03:30", "utc": "2037-09-22T06:35:18Z", "ms": 2137214117721.9226 }, "end": { "local": "2037-09-23T12:33:17+03:30", "utc": "2037-09-23T09:03:17Z", "ms": 2137309397100.2258 } }, "kaala": "udaya-3", "days": [ { "local_date": "2037-09-22", "window": { "start": { "local": "2037-09-22T05:19:47+03:30", "utc": "2037-09-22T01:49:47Z", "ms": 2137196987367.6987 }, "end": { "local": "2037-09-22T07:45:28+03:30", "utc": "2037-09-22T04:15:28Z", "ms": 2137205727732.063 } }, "covered_min": 0, "window_min": 146, "qualifies": false }, { "local_date": "2037-09-23", "window": { "start": { "local": "2037-09-23T05:20:35+03:30", "utc": "2037-09-23T01:50:35Z", "ms": 2137283434767.417 }, "end": { "local": "2037-09-23T07:45:48+03:30", "utc": "2037-09-23T04:15:48Z", "ms": 2137292147725.4478 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:05 on Tue 22 Sep to 12:33 on Wed 23 Sep.", "fact": "2037-09-22T06:35:18Z → 2037-09-23T09:03:17Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:20–07:45 on the 22nd, 05:21–07:46 on the 23rd.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 0 of 146 minutes on the 22nd and 145 of 145 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8390 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Mashhad, 2037: Wednesday 23 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-23", "confidence": "determinate" } ], "quote": "In Mashhad, Ananta Caturdaśī 2037 falls on Wednesday 23 September. Caturdaśī runs from 10:05 on Tue 22 Sep to 12:33 on Wed 23 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/2037/ananta-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-09-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9217, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-09-27T21:45:35+03:30", "utc": "2037-09-27T18:15:35Z", "ms": 2137688134630.937 }, "end": { "local": "2037-09-28T23:31:44+03:30", "utc": "2037-09-28T20:01:44Z", "ms": 2137780904395.8237 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-09-27T21:45:35+03:30", "utc": "2037-09-27T18:15:35Z", "ms": 2137688134630.937 }, "end": { "local": "2037-09-28T23:31:44+03:30", "utc": "2037-09-28T20:01:44Z", "ms": 2137780904395.8237 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-09-27", "window": { "start": { "local": "2037-09-27T19:11:58+03:30", "utc": "2037-09-27T15:41:58Z", "ms": 2137678917695.6335 }, "end": { "local": "2037-09-27T19:11:58+03:30", "utc": "2037-09-27T15:41:58Z", "ms": 2137678917695.6335 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-28", "window": { "start": { "local": "2037-09-28T19:44:09+03:30", "utc": "2037-09-28T16:14:09Z", "ms": 2137767249076.2266 }, "end": { "local": "2037-09-28T19:44:09+03:30", "utc": "2037-09-28T16:14:09Z", "ms": 2137767249076.2266 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:46 on Sun 27 Sep to 23:32 on Mon 28 Sep.", "fact": "2037-09-27T18:15:35Z → 2037-09-28T20:01:44Z" }, { "step": "kaala", "text": "Moonrise is at 19:12 on the 27th and 19:44 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9217 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Monday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-28", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Monday 28 September. Caturthī runs from 21:46 on Sun 27 Sep to 23:32 on Mon 28 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-09-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16482, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-09-30T00:54:41+03:30", "utc": "2037-09-29T21:24:41Z", "ms": 2137872281280.123 }, "end": { "local": "2037-10-01T01:48:01+03:30", "utc": "2037-09-30T22:18:01Z", "ms": 2137961881081.1953 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-09-30T00:54:41+03:30", "utc": "2037-09-29T21:24:41Z", "ms": 2137872281280.123 }, "end": { "local": "2037-10-01T01:48:01+03:30", "utc": "2037-09-30T22:18:01Z", "ms": 2137961881081.1953 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-09-29", "window": { "start": { "local": "2037-09-29T20:20:00+03:30", "utc": "2037-09-29T16:50:00Z", "ms": 2137855799704.7283 }, "end": { "local": "2037-09-29T20:20:00+03:30", "utc": "2037-09-29T16:50:00Z", "ms": 2137855799704.7283 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-09-30", "window": { "start": { "local": "2037-09-30T21:00:43+03:30", "utc": "2037-09-30T17:30:43Z", "ms": 2137944642869.175 }, "end": { "local": "2037-09-30T21:00:43+03:30", "utc": "2037-09-30T17:30:43Z", "ms": 2137944642869.175 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:55 on Wed 30 Sep to 01:48 on Thu 1 Oct.", "fact": "2037-09-29T21:24:41Z → 2037-09-30T22:18:01Z" }, { "step": "kaala", "text": "Moonrise is at 20:20 on the 29th and 21:01 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16482 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Mashhad, 2037: Wednesday 30 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-09-30", "confidence": "determinate" } ], "quote": "In Mashhad, Candra Ṣaṣṭhī 2037 falls on Wednesday 30 September. Ṣaṣṭhī runs from 00:55 on Wed 30 Sep to 01:48 on Thu 1 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/chandra-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24660, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-02T02:05:33+03:30", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T01:42:24+03:30", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-02T02:05:33+03:30", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T01:42:24+03:30", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-01", "window": { "start": { "local": "2037-10-01T17:14:50+03:30", "utc": "2037-10-01T13:44:50Z", "ms": 2138017489570.2542 }, "end": { "local": "2037-10-01T18:52:34+03:30", "utc": "2037-10-01T15:22:34Z", "ms": 2138023353565.9277 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "2037-10-02", "window": { "start": { "local": "2037-10-02T17:13:22+03:30", "utc": "2037-10-02T13:43:22Z", "ms": 2138103802169.6118 }, "end": { "local": "2037-10-02T18:51:24+03:30", "utc": "2037-10-02T15:21:24Z", "ms": 2138109684417.168 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:06 on Fri 2 Oct to 01:42 on Sat 3 Oct.", "fact": "2037-10-01T22:35:33Z → 2037-10-02T22:12:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:53 on the 1st, 17:13–18:51 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 98 minutes on the 1st and 98 of 98 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24660 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Mashhad, 2037: Friday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-02", "confidence": "determinate" } ], "quote": "In Mashhad, Jitāṣṭamī (Jitiya) 2037 falls on Friday 2 October. Aṣṭamī runs from 02:06 on Fri 2 Oct to 01:42 on Sat 3 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/jitashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10898, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-02T02:05:33+03:30", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T01:42:24+03:30", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-02T02:05:33+03:30", "utc": "2037-10-01T22:35:33Z", "ms": 2138049333459.1877 }, "end": { "local": "2037-10-03T01:42:24+03:30", "utc": "2037-10-02T22:12:24Z", "ms": 2138134344404.4531 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-01", "window": { "start": { "local": "2037-10-01T21:47:25+03:30", "utc": "2037-10-01T18:17:25Z", "ms": 2138033844914.1062 }, "end": { "local": "2037-10-01T21:47:25+03:30", "utc": "2037-10-01T18:17:25Z", "ms": 2138033844914.1062 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-10-02", "window": { "start": { "local": "2037-10-02T22:40:47+03:30", "utc": "2037-10-02T19:10:47Z", "ms": 2138123446797.9692 }, "end": { "local": "2037-10-02T22:40:47+03:30", "utc": "2037-10-02T19:10:47Z", "ms": 2138123446797.9692 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:06 on Fri 2 Oct to 01:42 on Sat 3 Oct.", "fact": "2037-10-01T22:35:33Z → 2037-10-02T22:12:24Z" }, { "step": "kaala", "text": "Moonrise is at 21:47 on the 1st and 22:41 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10898 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Mashhad, 2037: Friday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-02", "confidence": "determinate" } ], "quote": "In Mashhad, Mahālakṣmī Vrata Samāpana 2037 falls on Friday 2 October. Aṣṭamī runs from 02:06 on Fri 2 Oct to 01:42 on Sat 3 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/mahalakshmi-vrata-samapana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-10-05", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24247, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-10-04T22:46:12+03:30", "utc": "2037-10-04T19:16:12Z", "ms": 2138296571629.9736 }, "end": { "local": "2037-10-05T20:16:27+03:30", "utc": "2037-10-05T16:46:27Z", "ms": 2138373986881.2388 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-04T22:46:12+03:30", "utc": "2037-10-04T19:16:12Z", "ms": 2138296571629.9736 }, "end": { "local": "2037-10-05T20:16:27+03:30", "utc": "2037-10-05T16:46:27Z", "ms": 2138373986881.2388 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-10-05", "window": { "start": { "local": "2037-10-05T05:30:19+03:30", "utc": "2037-10-05T02:00:19Z", "ms": 2138320818861.6536 }, "end": { "local": "2037-10-05T05:30:19+03:30", "utc": "2037-10-05T02:00:19Z", "ms": 2138320818861.6536 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-06", "window": { "start": { "local": "2037-10-06T05:31:09+03:30", "utc": "2037-10-06T02:01:09Z", "ms": 2138407269225.3828 }, "end": { "local": "2037-10-06T05:31:09+03:30", "utc": "2037-10-06T02:01:09Z", "ms": 2138407269225.3828 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:46 on Sun 4 Oct to 20:16 on Mon 5 Oct.", "fact": "2037-10-04T19:16:12Z → 2037-10-05T16:46:27Z" }, { "step": "kaala", "text": "Sunrise is at 05:30 on the 5th and 05:31 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24247 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Mashhad, 2037: Monday 5 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-05", "confidence": "determinate" } ], "quote": "In Mashhad, Indirā Ekādaśī 2037 falls on Monday 5 October. Ekādaśī runs from 22:46 on Sun 4 Oct to 20:16 on Mon 5 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-10-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-06", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 295, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-10-06T17:12:32+03:30", "utc": "2037-10-06T13:42:32Z", "ms": 2138449351985.1414 }, "end": { "local": "2037-10-07T13:42:33+03:30", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-06T17:12:32+03:30", "utc": "2037-10-06T13:42:32Z", "ms": 2138449351985.1414 }, "end": { "local": "2037-10-07T13:42:33+03:30", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-06", "window": { "start": { "local": "2037-10-06T17:07:37+03:30", "utc": "2037-10-06T13:37:37Z", "ms": 2138449056881.0388 }, "end": { "local": "2037-10-06T18:46:52+03:30", "utc": "2037-10-06T15:16:52Z", "ms": 2138455011949.547 } }, "covered_min": 94, "window_min": 99, "qualifies": true }, { "local_date": "2037-10-07", "window": { "start": { "local": "2037-10-07T17:06:12+03:30", "utc": "2037-10-07T13:36:12Z", "ms": 2138535371782.3167 }, "end": { "local": "2037-10-07T18:45:45+03:30", "utc": "2037-10-07T15:15:45Z", "ms": 2138541344994.5786 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:13 on Tue 6 Oct to 13:43 on Wed 7 Oct.", "fact": "2037-10-06T13:42:32Z → 2037-10-07T10:12:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:47 on the 6th, 17:06–18:46 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 94 of 99 minutes on the 6th and 0 of 100 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 295 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Tuesday 6 October.", "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": "2037-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-06", "confidence": "boundary" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Tuesday 6 October. Trayodaśī runs from 17:13 on Tue 6 Oct to 13:43 on Wed 7 Oct and covers 94 of 99 minutes of pradoṣa that evening. It is 4 min 55 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-10-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-10-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33178, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-10-07T13:42:33+03:30", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "end": { "local": "2037-10-08T09:56:17+03:30", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-07T13:42:33+03:30", "utc": "2037-10-07T10:12:33Z", "ms": 2138523153342.264 }, "end": { "local": "2037-10-08T09:56:17+03:30", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 } }, "kaala": "nishita", "days": [ { "local_date": "2037-10-07", "window": { "start": { "local": "2037-10-07T22:55:31+03:30", "utc": "2037-10-07T19:25:31Z", "ms": 2138556331328.2986 }, "end": { "local": "2037-10-07T23:43:31+03:30", "utc": "2037-10-07T20:13:31Z", "ms": 2138559211328.2986 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-10-08", "window": { "start": { "local": "2037-10-08T22:55:15+03:30", "utc": "2037-10-08T19:25:15Z", "ms": 2138642714697.311 }, "end": { "local": "2037-10-08T23:43:15+03:30", "utc": "2037-10-08T20:13:15Z", "ms": 2138645594697.311 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:43 on Wed 7 Oct to 09:56 on Thu 8 Oct.", "fact": "2037-10-07T10:12:33Z → 2037-10-08T06:26:17Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:56–23:44 on the 7th, 22:55–23:43 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33178 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Wednesday 7 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-07", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Wednesday 7 October. Caturdaśī runs from 13:43 on Wed 7 Oct to 09:56 on Thu 8 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9104, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-10-08T09:56:17+03:30", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "end": { "local": "2037-10-09T06:04:35+03:30", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-08T09:56:17+03:30", "utc": "2037-10-08T06:26:17Z", "ms": 2138595976884.7715 }, "end": { "local": "2037-10-09T06:04:35+03:30", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 } }, "kaala": "aparahna", "days": [ { "local_date": "2037-10-08", "window": { "start": { "local": "2037-10-08T12:28:01+03:30", "utc": "2037-10-08T08:58:01Z", "ms": 2138605080686.5962 }, "end": { "local": "2037-10-08T14:46:24+03:30", "utc": "2037-10-08T11:16:24Z", "ms": 2138613383957.368 } }, "covered_min": 138, "window_min": 138, "qualifies": true }, { "local_date": "2037-10-09", "window": { "start": { "local": "2037-10-09T12:27:31+03:30", "utc": "2037-10-09T08:57:31Z", "ms": 2138691450813.557 }, "end": { "local": "2037-10-09T14:45:27+03:30", "utc": "2037-10-09T11:15:27Z", "ms": 2138699727029.2485 } }, "covered_min": 0, "window_min": 138, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:56 on Thu 8 Oct to 06:05 on Fri 9 Oct.", "fact": "2037-10-08T06:26:17Z → 2037-10-09T02:34:35Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 12:28–14:46 on the 8th, 12:28–14:45 on the 9th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 138 of 138 minutes on the 8th and 0 of 138 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9104 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Mashhad, 2037: Thursday 8 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-08", "confidence": "determinate" } ], "quote": "In Mashhad, Mahālaya Amāvāsyā 2037 falls on Thursday 8 October. Amāvasyā runs from 09:56 on Thu 8 Oct to 06:05 on Fri 9 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/mahalaya-amavasya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17398, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-10-09T06:04:35+03:30", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "end": { "local": "2037-10-10T02:18:55+03:30", "utc": "2037-10-09T22:48:55Z", "ms": 2138741334836.843 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-09T06:04:35+03:30", "utc": "2037-10-09T02:34:35Z", "ms": 2138668474796.7915 }, "end": { "local": "2037-10-10T02:18:55+03:30", "utc": "2037-10-09T22:48:55Z", "ms": 2138741334836.843 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-09", "window": { "start": { "local": "2037-10-09T10:54:33+03:30", "utc": "2037-10-09T07:24:33Z", "ms": 2138685872705.711 }, "end": { "local": "2037-10-09T11:42:33+03:30", "utc": "2037-10-09T08:12:33Z", "ms": 2138688752705.711 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-10-10", "window": { "start": { "local": "2037-10-10T10:54:17+03:30", "utc": "2037-10-10T07:24:17Z", "ms": 2138772256816.1914 }, "end": { "local": "2037-10-10T11:42:17+03:30", "utc": "2037-10-10T08:12:17Z", "ms": 2138775136816.1914 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:05 on Fri 9 Oct to 02:19 on Sat 10 Oct.", "fact": "2037-10-09T02:34:35Z → 2037-10-09T22:48:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 9th, 10:54–11:42 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17398 s" }, { "step": "ruling", "text": "Navarātrārambha, Mashhad, 2037: Friday 9 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-09", "confidence": "determinate" } ], "quote": "In Mashhad, Navarātrārambha (Navratri) 2037 falls on Friday 9 October. Pratipadā runs from 06:05 on Fri 9 Oct to 02:19 on Sat 10 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/navaratra-arambha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-10-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20929, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-11T19:51:26+03:30", "utc": "2037-10-11T16:21:26Z", "ms": 2138890885515.5317 }, "end": { "local": "2037-10-12T17:30:35+03:30", "utc": "2037-10-12T14:00:35Z", "ms": 2138968835447.0808 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-11T19:51:26+03:30", "utc": "2037-10-11T16:21:26Z", "ms": 2138890885515.5317 }, "end": { "local": "2037-10-12T17:30:35+03:30", "utc": "2037-10-12T14:00:35Z", "ms": 2138968835447.0808 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-11", "window": { "start": { "local": "2037-10-11T10:54:01+03:30", "utc": "2037-10-11T07:24:01Z", "ms": 2138858641396.7556 }, "end": { "local": "2037-10-11T11:42:01+03:30", "utc": "2037-10-11T08:12:01Z", "ms": 2138861521396.7556 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-12", "window": { "start": { "local": "2037-10-12T10:53:46+03:30", "utc": "2037-10-12T07:23:46Z", "ms": 2138945026461.9604 }, "end": { "local": "2037-10-12T11:41:46+03:30", "utc": "2037-10-12T08:11:46Z", "ms": 2138947906461.9604 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:51 on Sun 11 Oct to 17:31 on Mon 12 Oct.", "fact": "2037-10-11T16:21:26Z → 2037-10-12T14:00:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 11th, 10:54–11:42 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20929 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Monday 12 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-12", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Monday 12 October. Caturthī runs from 19:51 on Sun 11 Oct to 17:31 on Mon 12 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31791, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-10-14T15:13:08+03:30", "utc": "2037-10-14T11:43:08Z", "ms": 2139133388009.6448 }, "end": { "local": "2037-10-15T15:22:18+03:30", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-14T15:13:08+03:30", "utc": "2037-10-14T11:43:08Z", "ms": 2139133388009.6448 }, "end": { "local": "2037-10-15T15:22:18+03:30", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 } }, "kaala": "udaya-1", "days": [ { "local_date": "2037-10-14", "window": { "start": { "local": "2037-10-14T05:38:03+03:30", "utc": "2037-10-14T02:08:03Z", "ms": 2139098883368.6326 }, "end": { "local": "2037-10-14T06:23:17+03:30", "utc": "2037-10-14T02:53:17Z", "ms": 2139101597333.9216 } }, "covered_min": 0, "window_min": 45, "qualifies": false }, { "local_date": "2037-10-15", "window": { "start": { "local": "2037-10-15T05:38:57+03:30", "utc": "2037-10-15T02:08:57Z", "ms": 2139185336567.5972 }, "end": { "local": "2037-10-15T06:24:02+03:30", "utc": "2037-10-15T02:54:02Z", "ms": 2139188041654.911 } }, "covered_min": 45, "window_min": 45, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 15:13 on Wed 14 Oct to 15:22 on Thu 15 Oct.", "fact": "2037-10-14T11:43:08Z → 2037-10-15T11:52:18Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:38–06:23 on the 14th, 05:39–06:24 on the 15th.", "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 45 minutes on the 14th and 45 of 45 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31791 s" }, { "step": "ruling", "text": "Durgā Saptamī, Mashhad, 2037: Thursday 15 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-15", "confidence": "determinate" } ], "quote": "In Mashhad, Durgā Saptamī 2037 falls on Thursday 15 October. Saptamī runs from 15:13 on Wed 14 Oct to 15:22 on Thu 15 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/2037/durga-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13273, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-15T15:22:18+03:30", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "end": { "local": "2037-10-16T16:20:13+03:30", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-15T15:22:18+03:30", "utc": "2037-10-15T11:52:18Z", "ms": 2139220338222.2905 }, "end": { "local": "2037-10-16T16:20:13+03:30", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-15", "window": { "start": { "local": "2037-10-15T10:53:05+03:30", "utc": "2037-10-15T07:23:05Z", "ms": 2139204184722.4507 }, "end": { "local": "2037-10-15T11:41:05+03:30", "utc": "2037-10-15T08:11:05Z", "ms": 2139207064722.4507 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-16", "window": { "start": { "local": "2037-10-16T10:52:52+03:30", "utc": "2037-10-16T07:22:52Z", "ms": 2139290571887.052 }, "end": { "local": "2037-10-16T11:40:52+03:30", "utc": "2037-10-16T08:10:52Z", "ms": 2139293451887.052 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:22 on Thu 15 Oct to 16:20 on Fri 16 Oct.", "fact": "2037-10-15T11:52:18Z → 2037-10-16T12:50:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 15th, 10:53–11:41 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13273 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Mashhad, 2037: Friday 16 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Mahastami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-16", "confidence": "determinate" } ], "quote": "In Mashhad, Mahāṣṭamī (Durga Ashtami) 2037 falls on Friday 16 October. Aṣṭamī runs from 15:22 on Thu 15 Oct to 16:20 on Fri 16 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/mahashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16761, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-10-16T16:20:13+03:30", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "end": { "local": "2037-10-17T17:59:07+03:30", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-16T16:20:13+03:30", "utc": "2037-10-16T12:50:13Z", "ms": 2139310212503.5938 }, "end": { "local": "2037-10-17T17:59:07+03:30", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-16", "window": { "start": { "local": "2037-10-16T10:52:52+03:30", "utc": "2037-10-16T07:22:52Z", "ms": 2139290571887.052 }, "end": { "local": "2037-10-16T11:40:52+03:30", "utc": "2037-10-16T08:10:52Z", "ms": 2139293451887.052 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-17", "window": { "start": { "local": "2037-10-17T10:52:40+03:30", "utc": "2037-10-17T07:22:40Z", "ms": 2139376959620.038 }, "end": { "local": "2037-10-17T11:40:40+03:30", "utc": "2037-10-17T08:10:40Z", "ms": 2139379839620.038 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 16:20 on Fri 16 Oct to 17:59 on Sat 17 Oct.", "fact": "2037-10-16T12:50:13Z → 2037-10-17T14:29:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 16th, 10:53–11:41 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16761 s" }, { "step": "ruling", "text": "Mahānavamī, Mashhad, 2037: Saturday 17 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahanavami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise)." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-17", "confidence": "determinate" } ], "quote": "In Mashhad, Mahānavamī 2037 falls on Saturday 17 October. Navamī runs from 16:20 on Fri 16 Oct to 17:59 on Sat 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/mahanavami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3991, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2037-10-17T17:59:07+03:30", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "end": { "local": "2037-10-18T20:08:10+03:30", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-17T17:59:07+03:30", "utc": "2037-10-17T14:29:07Z", "ms": 2139402546781.4683 }, "end": { "local": "2037-10-18T20:08:10+03:30", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-10-17", "window": { "start": { "local": "2037-10-17T10:52:40+03:30", "utc": "2037-10-17T07:22:40Z", "ms": 2139376959620.038 }, "end": { "local": "2037-10-17T11:40:40+03:30", "utc": "2037-10-17T08:10:40Z", "ms": 2139379839620.038 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-10-18", "window": { "start": { "local": "2037-10-18T10:52:28+03:30", "utc": "2037-10-18T07:22:28Z", "ms": 2139463347939.6045 }, "end": { "local": "2037-10-18T11:40:28+03:30", "utc": "2037-10-18T08:10:28Z", "ms": 2139466227939.6045 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 17:59 on Sat 17 Oct to 20:08 on Sun 18 Oct.", "fact": "2037-10-17T14:29:07Z → 2037-10-18T16:38:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 17th, 10:52–11:40 on the 18th.", "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 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: unstated → only-day · margin 3991 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Mashhad, 2037: Sunday 18 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-18", "confidence": "determinate" } ], "quote": "In Mashhad, Vijayā Daśamī (Dussehra) 2037 falls on Sunday 18 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 17:59 on Sat 17 Oct to 20:08 on Sun 18 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vijaya-dashami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-10-19", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25694, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-10-18T20:08:10+03:30", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "end": { "local": "2037-10-19T22:35:13+03:30", "utc": "2037-10-19T19:05:13Z", "ms": 2139591913254.2046 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-18T20:08:10+03:30", "utc": "2037-10-18T16:38:10Z", "ms": 2139496690261.8943 }, "end": { "local": "2037-10-19T22:35:13+03:30", "utc": "2037-10-19T19:05:13Z", "ms": 2139591913254.2046 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-10-19", "window": { "start": { "local": "2037-10-19T05:42:33+03:30", "utc": "2037-10-19T02:12:33Z", "ms": 2139531152647.8108 }, "end": { "local": "2037-10-19T05:42:33+03:30", "utc": "2037-10-19T02:12:33Z", "ms": 2139531152647.8108 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-20", "window": { "start": { "local": "2037-10-20T05:43:28+03:30", "utc": "2037-10-20T02:13:28Z", "ms": 2139617607505.5425 }, "end": { "local": "2037-10-20T05:43:28+03:30", "utc": "2037-10-20T02:13:28Z", "ms": 2139617607505.5425 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:08 on Sun 18 Oct to 22:35 on Mon 19 Oct.", "fact": "2037-10-18T16:38:10Z → 2037-10-19T19:05:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:43 on the 19th and 05:43 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 25694 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Mashhad, 2037: Monday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-19", "confidence": "determinate" } ], "quote": "In Mashhad, Pāśāṅkuśā Ekādaśī 2037 falls on Monday 19 October. Ekādaśī runs from 20:08 on Sun 18 Oct to 22:35 on Mon 19 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-10-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-10-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23793, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-10-21T01:08:43+03:30", "utc": "2037-10-20T21:38:43Z", "ms": 2139687523140.5217 }, "end": { "local": "2037-10-22T03:39:12+03:30", "utc": "2037-10-22T00:09:12Z", "ms": 2139782951956.2473 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2037-10-21T01:08:43+03:30", "utc": "2037-10-20T21:38:43Z", "ms": 2139687523140.5217 }, "end": { "local": "2037-10-22T03:39:12+03:30", "utc": "2037-10-22T00:09:12Z", "ms": 2139782951956.2473 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-10-20", "window": { "start": { "local": "2037-10-20T16:48:45+03:30", "utc": "2037-10-20T13:18:45Z", "ms": 2139657525318.0303 }, "end": { "local": "2037-10-20T18:32:10+03:30", "utc": "2037-10-20T15:02:10Z", "ms": 2139663730302.8784 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "2037-10-21", "window": { "start": { "local": "2037-10-21T16:47:30+03:30", "utc": "2037-10-21T13:17:30Z", "ms": 2139743850497.6848 }, "end": { "local": "2037-10-21T18:31:13+03:30", "utc": "2037-10-21T15:01:13Z", "ms": 2139750072864.2273 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:09 on Wed 21 Oct to 03:39 on Thu 22 Oct.", "fact": "2037-10-20T21:38:43Z → 2037-10-22T00:09:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:49–18:32 on the 20th, 16:48–18:31 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 103 minutes on the 20th and 104 of 104 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 23793 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Wednesday 21 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-21", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Wednesday 21 October. Trayodaśī runs from 01:09 on Wed 21 Oct to 03:39 on Thu 22 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22445, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-27T12:40:32+03:30", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T13:29:53+03:30", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-27T12:40:32+03:30", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T13:29:53+03:30", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-27", "window": { "start": { "local": "2037-10-27T18:59:26+03:30", "utc": "2037-10-27T15:29:26Z", "ms": 2140270166133.5947 }, "end": { "local": "2037-10-27T18:59:26+03:30", "utc": "2037-10-27T15:29:26Z", "ms": 2140270166133.5947 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-28", "window": { "start": { "local": "2037-10-28T19:43:58+03:30", "utc": "2037-10-28T16:13:58Z", "ms": 2140359237674.2742 }, "end": { "local": "2037-10-28T19:43:58+03:30", "utc": "2037-10-28T16:13:58Z", "ms": 2140359237674.2742 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:41 on Tue 27 Oct to 13:30 on Wed 28 Oct.", "fact": "2037-10-27T09:10:32Z → 2037-10-28T09:59:53Z" }, { "step": "kaala", "text": "Moonrise is at 18:59 on the 27th and 19:44 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22445 s" }, { "step": "ruling", "text": "Karaka Caturthī, Mashhad, 2037: Tuesday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-27", "confidence": "determinate" } ], "quote": "In Mashhad, Karaka Caturthī (Karwa Chauth) 2037 falls on Tuesday 27 October. Caturthī runs from 12:41 on Tue 27 Oct to 13:30 on Wed 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/karaka-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-10-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22445, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-10-27T12:40:32+03:30", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T13:29:53+03:30", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-27T12:40:32+03:30", "utc": "2037-10-27T09:10:32Z", "ms": 2140247432100.778 }, "end": { "local": "2037-10-28T13:29:53+03:30", "utc": "2037-10-28T09:59:53Z", "ms": 2140336793171.0771 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-27", "window": { "start": { "local": "2037-10-27T18:59:26+03:30", "utc": "2037-10-27T15:29:26Z", "ms": 2140270166133.5947 }, "end": { "local": "2037-10-27T18:59:26+03:30", "utc": "2037-10-27T15:29:26Z", "ms": 2140270166133.5947 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-10-28", "window": { "start": { "local": "2037-10-28T19:43:58+03:30", "utc": "2037-10-28T16:13:58Z", "ms": 2140359237674.2742 }, "end": { "local": "2037-10-28T19:43:58+03:30", "utc": "2037-10-28T16:13:58Z", "ms": 2140359237674.2742 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:41 on Tue 27 Oct to 13:30 on Wed 28 Oct.", "fact": "2037-10-27T09:10:32Z → 2037-10-28T09:59:53Z" }, { "step": "kaala", "text": "Moonrise is at 18:59 on the 27th and 19:44 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22445 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Tuesday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-27", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Tuesday 27 October. Caturthī runs from 12:41 on Tue 27 Oct to 13:30 on Wed 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33852, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-10-31T13:08:57+03:30", "utc": "2037-10-31T09:38:57Z", "ms": 2140594737350.2683 }, "end": { "local": "2037-11-01T11:55:25+03:30", "utc": "2037-11-01T08:25:25Z", "ms": 2140676724946.7095 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-10-31T13:08:57+03:30", "utc": "2037-10-31T09:38:57Z", "ms": 2140594737350.2683 }, "end": { "local": "2037-11-01T11:55:25+03:30", "utc": "2037-11-01T08:25:25Z", "ms": 2140676724946.7095 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-10-31", "window": { "start": { "local": "2037-10-31T22:33:09+03:30", "utc": "2037-10-31T19:03:09Z", "ms": 2140628589209.2766 }, "end": { "local": "2037-10-31T22:33:09+03:30", "utc": "2037-10-31T19:03:09Z", "ms": 2140628589209.2766 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-11-01", "window": { "start": { "local": "2037-11-01T23:38:57+03:30", "utc": "2037-11-01T20:08:57Z", "ms": 2140718937173.1284 }, "end": { "local": "2037-11-01T23:38:57+03:30", "utc": "2037-11-01T20:08:57Z", "ms": 2140718937173.1284 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:09 on Sat 31 Oct to 11:55 on Sun 1 Nov.", "fact": "2037-10-31T09:38:57Z → 2037-11-01T08:25:25Z" }, { "step": "kaala", "text": "Moonrise is at 22:33 on the 31st and 23:39 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 31st and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33852 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Mashhad, 2037: Saturday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-10-31", "confidence": "determinate" } ], "quote": "In Mashhad, Ahoyī Aṣṭamī 2037 falls on Saturday 31 October. Aṣṭamī runs from 13:09 on Sat 31 Oct to 11:55 on Sun 1 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ahoyi-ashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-11-03", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3746, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-11-03T07:45:15+03:30", "utc": "2037-11-03T04:15:15Z", "ms": 2140834514652.8245 }, "end": { "local": "2037-11-04T04:55:25+03:30", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-03T07:45:15+03:30", "utc": "2037-11-03T04:15:15Z", "ms": 2140834514652.8245 }, "end": { "local": "2037-11-04T04:55:25+03:30", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-11-03", "window": { "start": { "local": "2037-11-03T05:56:51+03:30", "utc": "2037-11-03T02:26:51Z", "ms": 2140828011267.262 }, "end": { "local": "2037-11-03T05:56:51+03:30", "utc": "2037-11-03T02:26:51Z", "ms": 2140828011267.262 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T05:57:51+03:30", "utc": "2037-11-04T02:27:51Z", "ms": 2140914471044.6013 }, "end": { "local": "2037-11-04T05:57:51+03:30", "utc": "2037-11-04T02:27:51Z", "ms": 2140914471044.6013 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:45 on Tue 3 Nov to 04:55 on Wed 4 Nov.", "fact": "2037-11-03T04:15:15Z → 2037-11-04T01:25:25Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 3rd and 05:58 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 not on the 4th.", "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 3746 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Mashhad, 2037: Tuesday 3 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-03", "confidence": "determinate" } ], "quote": "In Mashhad, Ramā Ekādaśī 2037 falls on Tuesday 3 November. Ekādaśī runs from 07:45 on Tue 3 Nov to 04:55 on Wed 4 Nov, and is current at sunrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-11-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26672, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-11-04T04:55:25+03:30", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "end": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-04T04:55:25+03:30", "utc": "2037-11-04T01:25:25Z", "ms": 2140910725219.271 }, "end": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-03", "window": { "start": { "local": "2037-11-03T16:32:59+03:30", "utc": "2037-11-03T13:02:59Z", "ms": 2140866179098.0308 }, "end": { "local": "2037-11-03T18:20:18+03:30", "utc": "2037-11-03T14:50:18Z", "ms": 2140872618024.2402 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T16:32:01+03:30", "utc": "2037-11-04T13:02:01Z", "ms": 2140952521039.0574 }, "end": { "local": "2037-11-04T18:19:36+03:30", "utc": "2037-11-04T14:49:36Z", "ms": 2140958975709.8665 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 04:55 on Wed 4 Nov to 01:44 on Thu 5 Nov.", "fact": "2037-11-04T01:25:25Z → 2037-11-04T22:14:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:33–18:20 on the 3rd, 16:32–18:20 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 0 of 107 minutes on the 3rd and 108 of 108 on the 4th.", "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 26672 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Mashhad, 2037: Wednesday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-04", "confidence": "determinate" } ], "quote": "In Mashhad, Govatsa Dvādaśī (Vasu Baras) 2037 falls on Wednesday 4 November. Dvādaśī runs from 04:55 on Wed 4 Nov to 01:44 on Thu 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/govatsa-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14462, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T16:32:01+03:30", "utc": "2037-11-04T13:02:01Z", "ms": 2140952521039.0574 }, "end": { "local": "2037-11-04T18:19:36+03:30", "utc": "2037-11-04T14:49:36Z", "ms": 2140958975709.8665 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T16:31:04+03:30", "utc": "2037-11-05T13:01:04Z", "ms": 2141038864421.0527 }, "end": { "local": "2037-11-05T18:18:55+03:30", "utc": "2037-11-05T14:48:55Z", "ms": 2141045334674.371 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:44 on Thu 5 Nov to 22:20 on Thu 5 Nov.", "fact": "2037-11-04T22:14:08Z → 2037-11-05T18:49:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:32–18:20 on the 4th, 16:31–18:19 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 108 minutes on the 4th and 108 of 108 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14462 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Mashhad, 2037: Thursday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-05", "confidence": "determinate" } ], "quote": "In Mashhad, Yama Dīpadāna 2037 falls on Thursday 5 November. Trayodaśī runs from 01:44 on Thu 5 Nov to 22:20 on Thu 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/yama-dipadana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-11-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14462, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T01:44:08+03:30", "utc": "2037-11-04T22:14:08Z", "ms": 2140985647561.7163 }, "end": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-04", "window": { "start": { "local": "2037-11-04T16:32:01+03:30", "utc": "2037-11-04T13:02:01Z", "ms": 2140952521039.0574 }, "end": { "local": "2037-11-04T18:19:36+03:30", "utc": "2037-11-04T14:49:36Z", "ms": 2140958975709.8665 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T16:31:04+03:30", "utc": "2037-11-05T13:01:04Z", "ms": 2141038864421.0527 }, "end": { "local": "2037-11-05T18:18:55+03:30", "utc": "2037-11-05T14:48:55Z", "ms": 2141045334674.371 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:44 on Thu 5 Nov to 22:20 on Thu 5 Nov.", "fact": "2037-11-04T22:14:08Z → 2037-11-05T18:49:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:32–18:20 on the 4th, 16:31–18:19 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 108 minutes on the 4th and 108 of 108 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 14462 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Thursday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-05", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Thursday 5 November. Trayodaśī runs from 01:44 on Thu 5 Nov to 22:20 on Thu 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-11-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1891, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-05", "window": { "start": { "local": "2037-11-05T22:51:28+03:30", "utc": "2037-11-05T19:21:28Z", "ms": 2141061687870.996 }, "end": { "local": "2037-11-05T23:39:28+03:30", "utc": "2037-11-05T20:09:28Z", "ms": 2141064567870.996 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T22:51:31+03:30", "utc": "2037-11-06T19:21:31Z", "ms": 2141148090521.6865 }, "end": { "local": "2037-11-06T23:39:31+03:30", "utc": "2037-11-06T20:09:31Z", "ms": 2141150970521.6865 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:20 on Thu 5 Nov to 18:53 on Fri 6 Nov.", "fact": "2037-11-05T18:49:57Z → 2037-11-06T15:22:45Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:51–23:39 on the 5th, 22:52–23:40 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1891 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Thursday 5 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": "2037-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-05", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Thursday 5 November. Caturdaśī runs from 22:20 on Thu 5 Nov to 18:53 on Fri 6 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21124, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-05T22:19:57+03:30", "utc": "2037-11-05T18:49:57Z", "ms": 2141059796876.1028 }, "end": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 } }, "kaala": "arunodaya", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T04:12:01+03:30", "utc": "2037-11-06T00:42:01Z", "ms": 2141080921067.6213 }, "end": { "local": "2037-11-06T05:59:51+03:30", "utc": "2037-11-06T02:29:51Z", "ms": 2141087391320.9397 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T04:12:46+03:30", "utc": "2037-11-07T00:42:46Z", "ms": 2141167366104.9832 }, "end": { "local": "2037-11-07T06:00:52+03:30", "utc": "2037-11-07T02:30:52Z", "ms": 2141173851771.6365 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:20 on Thu 5 Nov to 18:53 on Fri 6 Nov.", "fact": "2037-11-05T18:49:57Z → 2037-11-06T15:22:45Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:12–06:00 on the 6th, 04:13–06:01 on the 7th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 108 of 108 minutes on the 6th and 0 of 108 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21124 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Mashhad, 2037: Friday 6 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "determinate" } ], "quote": "In Mashhad, Naraka Caturdaśī (Choti Diwali) 2037 falls on Friday 6 November. Caturdaśī runs from 22:20 on Thu 5 Nov to 18:53 on Fri 6 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mashhad/festivals/2037/naraka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-06", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2070, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T16:30:09+03:30", "utc": "2037-11-06T13:00:09Z", "ms": 2141125209271.7363 }, "end": { "local": "2037-11-06T18:18:15+03:30", "utc": "2037-11-06T14:48:15Z", "ms": 2141131694938.3896 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T16:29:16+03:30", "utc": "2037-11-07T12:59:16Z", "ms": 2141211555617.7673 }, "end": { "local": "2037-11-07T18:17:37+03:30", "utc": "2037-11-07T14:47:37Z", "ms": 2141218056521.3433 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:53 on Fri 6 Nov to 15:33 on Sat 7 Nov.", "fact": "2037-11-06T15:22:45Z → 2037-11-07T12:03:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:30–18:18 on the 6th, 16:29–18:18 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 108 minutes on the 6th and 0 of 108 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2070 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Mashhad, 2037: Friday 6 November.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "determinate" } ], "quote": "In Mashhad, Lakṣmī Pūjā (Diwali) 2037 falls on Friday 6 November. Amāvasyā runs from 18:53 on Fri 6 Nov to 15:33 on Sat 7 Nov, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/diwali-lakshmi-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14325, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-06T18:52:45+03:30", "utc": "2037-11-06T15:22:45Z", "ms": 2141133765169.683 }, "end": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-06", "window": { "start": { "local": "2037-11-06T22:51:31+03:30", "utc": "2037-11-06T19:21:31Z", "ms": 2141148090521.6865 }, "end": { "local": "2037-11-06T23:39:31+03:30", "utc": "2037-11-06T20:09:31Z", "ms": 2141150970521.6865 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T22:51:34+03:30", "utc": "2037-11-07T19:21:34Z", "ms": 2141234494006.1772 }, "end": { "local": "2037-11-07T23:39:34+03:30", "utc": "2037-11-07T20:09:34Z", "ms": 2141237374006.1772 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:53 on Fri 6 Nov to 15:33 on Sat 7 Nov.", "fact": "2037-11-06T15:22:45Z → 2037-11-07T12:03:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:52–23:40 on the 6th, 22:52–23:40 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14325 s" }, { "step": "ruling", "text": "Kālī Pūjā, Mashhad, 2037: Friday 6 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": "2037-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-06", "confidence": "determinate" } ], "quote": "In Mashhad, Kālī Pūjā 2037 falls on Friday 6 November. Amāvasyā runs from 18:53 on Fri 6 Nov to 15:33 on Sat 7 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/kali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3365, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T16:29:16+03:30", "utc": "2037-11-07T12:59:16Z", "ms": 2141211555617.7673 }, "end": { "local": "2037-11-07T18:17:37+03:30", "utc": "2037-11-07T14:47:37Z", "ms": 2141218056521.3433 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T16:28:23+03:30", "utc": "2037-11-08T12:58:23Z", "ms": 2141297903485.2578 }, "end": { "local": "2037-11-08T18:16:59+03:30", "utc": "2037-11-08T14:46:59Z", "ms": 2141304419441.9438 } }, "covered_min": 0, "window_min": 109, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:29–18:18 on the 7th, 16:28–18:17 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 108 of 108 minutes on the 7th and 0 of 109 on the 8th.", "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 3365 s" }, { "step": "ruling", "text": "Bali Pūjā, Mashhad, 2037: Saturday 7 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": "2037-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-07", "confidence": "determinate" } ], "quote": "In Mashhad, Bali Pūjā 2037 falls on Saturday 7 November. Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/bali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3179, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T10:51:04+03:30", "utc": "2037-11-07T07:21:04Z", "ms": 2141191263694.702 }, "end": { "local": "2037-11-07T11:39:04+03:30", "utc": "2037-11-07T08:09:04Z", "ms": 2141194143694.702 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T10:51:08+03:30", "utc": "2037-11-08T07:21:08Z", "ms": 2141277667939.9226 }, "end": { "local": "2037-11-08T11:39:08+03:30", "utc": "2037-11-08T08:09:08Z", "ms": 2141280547939.9226 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 7th, 10:51–11:39 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3179 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Mashhad, 2037: Sunday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-08", "confidence": "determinate" } ], "quote": "In Mashhad, Govardhana Pūjā 2037 falls on Sunday 8 November. Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/govardhana-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10884, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-07T15:33:11+03:30", "utc": "2037-11-07T12:03:11Z", "ms": 2141208190755.1328 }, "end": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-11-07", "window": { "start": { "local": "2037-11-07T06:00:52+03:30", "utc": "2037-11-07T02:30:52Z", "ms": 2141173851771.6365 }, "end": { "local": "2037-11-07T09:30:20+03:30", "utc": "2037-11-07T06:00:20Z", "ms": 2141186419720.3467 } }, "covered_min": 0, "window_min": 209, "qualifies": false }, { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T06:01:52+03:30", "utc": "2037-11-08T02:31:52Z", "ms": 2141260312394.5874 }, "end": { "local": "2037-11-08T09:30:43+03:30", "utc": "2037-11-08T06:00:43Z", "ms": 2141272842758.1443 } }, "covered_min": 209, "window_min": 209, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov.", "fact": "2037-11-07T12:03:11Z → 2037-11-08T09:02:06Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:01–09:30 on the 7th, 06:02–09:31 on the 8th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 209 minutes on the 7th and 209 of 209 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10884 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Mashhad, 2037: Sunday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-08", "confidence": "determinate" } ], "quote": "In Mashhad, Dyūta Pratipad 2037 falls on Sunday 8 November. Pratipadā runs from 15:33 on Sat 7 Nov to 12:32 on Sun 8 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/dyuta-pratipad", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3069, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "end": { "local": "2037-11-09T10:00:04+03:30", "utc": "2037-11-09T06:30:04Z", "ms": 2141361003603.195 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-08T12:32:06+03:30", "utc": "2037-11-08T09:02:06Z", "ms": 2141283726451.9768 }, "end": { "local": "2037-11-09T10:00:04+03:30", "utc": "2037-11-09T06:30:04Z", "ms": 2141361003603.195 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-08", "window": { "start": { "local": "2037-11-08T10:51:08+03:30", "utc": "2037-11-08T07:21:08Z", "ms": 2141277667939.9226 }, "end": { "local": "2037-11-08T11:39:08+03:30", "utc": "2037-11-08T08:09:08Z", "ms": 2141280547939.9226 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-09", "window": { "start": { "local": "2037-11-09T10:51:13+03:30", "utc": "2037-11-09T07:21:13Z", "ms": 2141364073030.3606 }, "end": { "local": "2037-11-09T11:39:13+03:30", "utc": "2037-11-09T08:09:13Z", "ms": 2141366953030.3606 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 12:32 on Sun 8 Nov to 10:00 on Mon 9 Nov.", "fact": "2037-11-08T09:02:06Z → 2037-11-09T06:30:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 8th, 10:51–11:39 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 3069 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Mashhad, 2037: Monday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-09", "confidence": "determinate" } ], "quote": "In Mashhad, Yama Dvitīyā (Bhai Dooj) 2037 falls on Monday 9 November. Dvitīyā runs from 12:32 on Sun 8 Nov to 10:00 on Mon 9 Nov, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mashhad/festivals/2037/yama-dvitiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9891, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-10T08:06:28+03:30", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T06:58:46+03:30", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-10T08:06:28+03:30", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T06:58:46+03:30", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-10", "window": { "start": { "local": "2037-11-10T10:51:19+03:30", "utc": "2037-11-10T07:21:19Z", "ms": 2141450478963.9675 }, "end": { "local": "2037-11-10T11:39:19+03:30", "utc": "2037-11-10T08:09:19Z", "ms": 2141453358963.9675 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-11", "window": { "start": { "local": "2037-11-11T10:51:26+03:30", "utc": "2037-11-11T07:21:26Z", "ms": 2141536885738.609 }, "end": { "local": "2037-11-11T11:39:26+03:30", "utc": "2037-11-11T08:09:26Z", "ms": 2141539765738.609 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:06 on Tue 10 Nov to 06:59 on Wed 11 Nov.", "fact": "2037-11-10T04:36:28Z → 2037-11-11T03:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 10th, 10:51–11:39 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9891 s" }, { "step": "ruling", "text": "Nāga Caturthī, Mashhad, 2037: Tuesday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-10", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Caturthī 2037 falls on Tuesday 10 November. Caturthī runs from 08:06 on Tue 10 Nov to 06:59 on Wed 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/naga-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-11-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9891, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-10T08:06:28+03:30", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T06:58:46+03:30", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-10T08:06:28+03:30", "utc": "2037-11-10T04:36:28Z", "ms": 2141440588102.5886 }, "end": { "local": "2037-11-11T06:58:46+03:30", "utc": "2037-11-11T03:28:46Z", "ms": 2141522926097.0564 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-10", "window": { "start": { "local": "2037-11-10T10:51:19+03:30", "utc": "2037-11-10T07:21:19Z", "ms": 2141450478963.9675 }, "end": { "local": "2037-11-10T11:39:19+03:30", "utc": "2037-11-10T08:09:19Z", "ms": 2141453358963.9675 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-11", "window": { "start": { "local": "2037-11-11T10:51:26+03:30", "utc": "2037-11-11T07:21:26Z", "ms": 2141536885738.609 }, "end": { "local": "2037-11-11T11:39:26+03:30", "utc": "2037-11-11T08:09:26Z", "ms": 2141539765738.609 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:06 on Tue 10 Nov to 06:59 on Wed 11 Nov.", "fact": "2037-11-10T04:36:28Z → 2037-11-11T03:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 10th, 10:51–11:39 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9891 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Tuesday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-10", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Tuesday 10 November. Caturthī runs from 08:06 on Tue 10 Nov to 06:59 on Wed 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13025, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-11-12T06:41:22+03:30", "utc": "2037-11-12T03:11:22Z", "ms": 2141608281701.1724 }, "end": { "local": "2037-11-13T07:14:37+03:30", "utc": "2037-11-13T03:44:37Z", "ms": 2141696677090.1436 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-12T06:41:22+03:30", "utc": "2037-11-12T03:11:22Z", "ms": 2141608281701.1724 }, "end": { "local": "2037-11-13T07:14:37+03:30", "utc": "2037-11-13T03:44:37Z", "ms": 2141696677090.1436 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-12", "window": { "start": { "local": "2037-11-12T10:51:33+03:30", "utc": "2037-11-12T07:21:33Z", "ms": 2141623293352.1997 }, "end": { "local": "2037-11-12T11:39:33+03:30", "utc": "2037-11-12T08:09:33Z", "ms": 2141626173352.1997 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-13", "window": { "start": { "local": "2037-11-13T10:51:42+03:30", "utc": "2037-11-13T07:21:42Z", "ms": 2141709701802.6694 }, "end": { "local": "2037-11-13T11:39:42+03:30", "utc": "2037-11-13T08:09:42Z", "ms": 2141712581802.6694 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:41 on Thu 12 Nov to 07:15 on Fri 13 Nov.", "fact": "2037-11-12T03:11:22Z → 2037-11-13T03:44:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 12th, 10:52–11:40 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13025 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Mashhad, 2037: Thursday 12 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": "2037-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-12", "confidence": "determinate" } ], "quote": "In Mashhad, Sūrya Ṣaṣṭhī (Chhath) 2037 falls on Thursday 12 November. Ṣaṣṭhī runs from 06:41 on Thu 12 Nov to 07:15 on Fri 13 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/surya-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1239, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2037-11-14T08:34:14+03:30", "utc": "2037-11-14T05:04:14Z", "ms": 2141787854368.1794 }, "end": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-14T08:34:14+03:30", "utc": "2037-11-14T05:04:14Z", "ms": 2141787854368.1794 }, "end": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-14", "window": { "start": { "local": "2037-11-14T10:51:51+03:30", "utc": "2037-11-14T07:21:51Z", "ms": 2141796111087.5786 }, "end": { "local": "2037-11-14T11:39:51+03:30", "utc": "2037-11-14T08:09:51Z", "ms": 2141798991087.5786 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T10:52:01+03:30", "utc": "2037-11-15T07:22:01Z", "ms": 2141882521205.2078 }, "end": { "local": "2037-11-15T11:40:01+03:30", "utc": "2037-11-15T08:10:01Z", "ms": 2141885401205.2078 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:34 on Sat 14 Nov to 10:31 on Sun 15 Nov.", "fact": "2037-11-14T05:04:14Z → 2037-11-15T07:01:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 14th, 10:52–11:40 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1239 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Mashhad, 2037: Saturday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-14", "confidence": "boundary" } ], "quote": "In Mashhad, Gopāṣṭamī 2037 falls on Saturday 14 November. Aṣṭamī runs from 08:34 on Sat 14 Nov to 10:31 on Sun 15 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/gopashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1239, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T12:53:43+03:30", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T12:53:43+03:30", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T10:52:01+03:30", "utc": "2037-11-15T07:22:01Z", "ms": 2141882521205.2078 }, "end": { "local": "2037-11-15T11:40:01+03:30", "utc": "2037-11-15T08:10:01Z", "ms": 2141885401205.2078 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-16", "window": { "start": { "local": "2037-11-16T10:52:12+03:30", "utc": "2037-11-16T07:22:12Z", "ms": 2141968932151.9033 }, "end": { "local": "2037-11-16T11:40:12+03:30", "utc": "2037-11-16T08:10:12Z", "ms": 2141971812151.9033 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:31 on Sun 15 Nov to 12:54 on Mon 16 Nov.", "fact": "2037-11-15T07:01:22Z → 2037-11-16T09:23:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 15th, 10:52–11:40 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1239 s" }, { "step": "ruling", "text": "Durgā Navamī, Mashhad, 2037: Sunday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-15", "confidence": "determinate" } ], "quote": "In Mashhad, Durgā Navamī 2037 falls on Sunday 15 November. Navamī runs from 10:31 on Sun 15 Nov to 12:54 on Mon 16 Nov and covers all 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/mashhad/festivals/2037/durga-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3462, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T12:53:43+03:30", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-15T10:31:22+03:30", "utc": "2037-11-15T07:01:22Z", "ms": 2141881282385.4976 }, "end": { "local": "2037-11-16T12:53:43+03:30", "utc": "2037-11-16T09:23:43Z", "ms": 2141976222564.1 } }, "kaala": "purvahna", "days": [ { "local_date": "2037-11-15", "window": { "start": { "local": "2037-11-15T06:08:59+03:30", "utc": "2037-11-15T02:38:59Z", "ms": 2141865539009.2825 }, "end": { "local": "2037-11-15T09:33:40+03:30", "utc": "2037-11-15T06:03:40Z", "ms": 2141877820473.2327 } }, "covered_min": 0, "window_min": 205, "qualifies": false }, { "local_date": "2037-11-16", "window": { "start": { "local": "2037-11-16T06:10:00+03:30", "utc": "2037-11-16T02:40:00Z", "ms": 2141951999895.0107 }, "end": { "local": "2037-11-16T09:34:08+03:30", "utc": "2037-11-16T06:04:08Z", "ms": 2141964248066.2725 } }, "covered_min": 204, "window_min": 204, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:31 on Sun 15 Nov to 12:54 on Mon 16 Nov.", "fact": "2037-11-15T07:01:22Z → 2037-11-16T09:23:43Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:09–09:34 on the 15th, 06:10–09:34 on the 16th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 205 minutes on the 15th and 204 of 204 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 3462 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Mashhad, 2037: Monday 16 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-16", "confidence": "determinate" } ], "quote": "In Mashhad, Akṣaya Navamī (Amla Navami) 2037 falls on Monday 16 November. Navamī runs from 10:31 on Sun 15 Nov to 12:54 on Mon 16 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/2037/akshaya-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-11-18", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33384, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-11-17T15:27:25+03:30", "utc": "2037-11-17T11:57:25Z", "ms": 2142071844846.1797 }, "end": { "local": "2037-11-18T17:59:20+03:30", "utc": "2037-11-18T14:29:20Z", "ms": 2142167360219.3728 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-17T15:27:25+03:30", "utc": "2037-11-17T11:57:25Z", "ms": 2142071844846.1797 }, "end": { "local": "2037-11-18T17:59:20+03:30", "utc": "2037-11-18T14:29:20Z", "ms": 2142167360219.3728 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-11-17", "window": { "start": { "local": "2037-11-17T06:11:01+03:30", "utc": "2037-11-17T02:41:01Z", "ms": 2142038460668.061 }, "end": { "local": "2037-11-17T06:11:01+03:30", "utc": "2037-11-17T02:41:01Z", "ms": 2142038460668.061 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-11-18", "window": { "start": { "local": "2037-11-18T06:12:01+03:30", "utc": "2037-11-18T02:42:01Z", "ms": 2142124921294.4663 }, "end": { "local": "2037-11-18T06:12:01+03:30", "utc": "2037-11-18T02:42:01Z", "ms": 2142124921294.4663 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:27 on Tue 17 Nov to 17:59 on Wed 18 Nov.", "fact": "2037-11-17T11:57:25Z → 2037-11-18T14:29:20Z" }, { "step": "kaala", "text": "Sunrise is at 06:11 on the 17th and 06:12 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 33384 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Mashhad, 2037: Wednesday 18 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-18", "confidence": "determinate" } ], "quote": "In Mashhad, Prabodhinī Ekādaśī 2037 falls on Wednesday 18 November. Ekādaśī runs from 15:27 on Tue 17 Nov to 17:59 on Wed 18 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-11-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-11-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7623, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-11-19T20:18:48+03:30", "utc": "2037-11-19T16:48:48Z", "ms": 2142262127863.381 }, "end": { "local": "2037-11-20T22:18:29+03:30", "utc": "2037-11-20T18:48:29Z", "ms": 2142355709139.9448 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-19T20:18:48+03:30", "utc": "2037-11-19T16:48:48Z", "ms": 2142262127863.381 }, "end": { "local": "2037-11-20T22:18:29+03:30", "utc": "2037-11-20T18:48:29Z", "ms": 2142355709139.9448 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-11-19", "window": { "start": { "local": "2037-11-19T16:20:38+03:30", "utc": "2037-11-19T12:50:38Z", "ms": 2142247838120.9587 }, "end": { "local": "2037-11-19T18:11:45+03:30", "utc": "2037-11-19T14:41:45Z", "ms": 2142254505300.5923 } }, "covered_min": 0, "window_min": 111, "qualifies": false }, { "local_date": "2037-11-20", "window": { "start": { "local": "2037-11-20T16:20:06+03:30", "utc": "2037-11-20T12:50:06Z", "ms": 2142334206338.57 }, "end": { "local": "2037-11-20T18:11:26+03:30", "utc": "2037-11-20T14:41:26Z", "ms": 2142340885752.6797 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:19 on Thu 19 Nov to 22:18 on Fri 20 Nov.", "fact": "2037-11-19T16:48:48Z → 2037-11-20T18:48:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:21–18:12 on the 19th, 16:20–18:11 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 111 minutes on the 19th and 111 of 111 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7623 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Friday 20 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-20", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Friday 20 November. Trayodaśī runs from 20:19 on Thu 19 Nov to 22:18 on Fri 20 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35314, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-11-21T23:54:26+03:30", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T01:05:18+03:30", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-21T23:54:26+03:30", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T01:05:18+03:30", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-11-22", "window": { "start": { "local": "2037-11-22T10:53:35+03:30", "utc": "2037-11-22T07:23:35Z", "ms": 2142487415009.3794 }, "end": { "local": "2037-11-22T11:41:35+03:30", "utc": "2037-11-22T08:11:35Z", "ms": 2142490295009.3794 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-11-23", "window": { "start": { "local": "2037-11-23T10:53:52+03:30", "utc": "2037-11-23T07:23:52Z", "ms": 2142573831627.7454 }, "end": { "local": "2037-11-23T11:41:52+03:30", "utc": "2037-11-23T08:11:52Z", "ms": 2142576711627.7454 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:54 on Sat 21 Nov to 01:05 on Mon 23 Nov.", "fact": "2037-11-21T20:24:26Z → 2037-11-22T21:35:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 22nd, 10:54–11:42 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35314 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Mashhad, 2037: Sunday 22 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kartiki-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-22", "confidence": "determinate" } ], "quote": "In Mashhad, Kārtikī Pūrṇimā 2037 falls on Sunday 22 November. Pūrṇimā runs from 23:54 on Sat 21 Nov to 01:05 on Mon 23 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/kartiki-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 757, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-11-21T23:54:26+03:30", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T01:05:18+03:30", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2037-11-21T23:54:26+03:30", "utc": "2037-11-21T20:24:26Z", "ms": 2142447865667.174 }, "end": { "local": "2037-11-23T01:05:18+03:30", "utc": "2037-11-22T21:35:18Z", "ms": 2142538517758.2651 } }, "kaala": "nishita", "days": [ { "local_date": "2037-11-21", "window": { "start": { "local": "2037-11-21T22:53:49+03:30", "utc": "2037-11-21T19:23:49Z", "ms": 2142444229025.6582 }, "end": { "local": "2037-11-21T23:41:49+03:30", "utc": "2037-11-21T20:11:49Z", "ms": 2142447109025.6582 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-11-22", "window": { "start": { "local": "2037-11-22T22:54:05+03:30", "utc": "2037-11-22T19:24:05Z", "ms": 2142530644689.914 }, "end": { "local": "2037-11-22T23:42:05+03:30", "utc": "2037-11-22T20:12:05Z", "ms": 2142533524689.914 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:54 on Sat 21 Nov to 01:05 on Mon 23 Nov.", "fact": "2037-11-21T20:24:26Z → 2037-11-22T21:35:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:54–23:42 on the 21st, 22:54–23:42 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 757 s" }, { "step": "ruling", "text": "Rāsayātrā, Mashhad, 2037: Sunday 22 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rasayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-22", "confidence": "determinate" } ], "quote": "In Mashhad, Rāsayātrā 2037 falls on Sunday 22 November. Pūrṇimā runs from 23:54 on Sat 21 Nov to 01:05 on Mon 23 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/rasayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-11-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23124, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-11-26T02:13:33+03:30", "utc": "2037-11-25T22:43:33Z", "ms": 2142801812795.0442 }, "end": { "local": "2037-11-27T01:51:04+03:30", "utc": "2037-11-26T22:21:04Z", "ms": 2142886863617.8074 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-11-26T02:13:33+03:30", "utc": "2037-11-25T22:43:33Z", "ms": 2142801812795.0442 }, "end": { "local": "2037-11-27T01:51:04+03:30", "utc": "2037-11-26T22:21:04Z", "ms": 2142886863617.8074 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-11-25", "window": { "start": { "local": "2037-11-25T18:30:21+03:30", "utc": "2037-11-25T15:00:21Z", "ms": 2142774020809.1492 }, "end": { "local": "2037-11-25T18:30:21+03:30", "utc": "2037-11-25T15:00:21Z", "ms": 2142774020809.1492 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-11-26", "window": { "start": { "local": "2037-11-26T19:25:40+03:30", "utc": "2037-11-26T15:55:40Z", "ms": 2142863740104.8293 }, "end": { "local": "2037-11-26T19:25:40+03:30", "utc": "2037-11-26T15:55:40Z", "ms": 2142863740104.8293 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:14 on Thu 26 Nov to 01:51 on Fri 27 Nov.", "fact": "2037-11-25T22:43:33Z → 2037-11-26T22:21:04Z" }, { "step": "kaala", "text": "Moonrise is at 18:30 on the 25th and 19:26 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23124 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Thursday 26 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-11-26", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Thursday 26 November. Caturthī runs from 02:14 on Thu 26 Nov to 01:51 on Fri 27 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-12-03", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24777, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-12-02T15:58:56+03:30", "utc": "2037-12-02T12:28:56Z", "ms": 2143369736204.0466 }, "end": { "local": "2037-12-03T13:19:25+03:30", "utc": "2037-12-03T09:49:25Z", "ms": 2143446564564.566 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-02T15:58:56+03:30", "utc": "2037-12-02T12:28:56Z", "ms": 2143369736204.0466 }, "end": { "local": "2037-12-03T13:19:25+03:30", "utc": "2037-12-03T09:49:25Z", "ms": 2143446564564.566 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-12-02", "window": { "start": { "local": "2037-12-02T06:25:34+03:30", "utc": "2037-12-02T02:55:34Z", "ms": 2143335333916.6047 }, "end": { "local": "2037-12-02T06:25:34+03:30", "utc": "2037-12-02T02:55:34Z", "ms": 2143335333916.6047 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-12-03", "window": { "start": { "local": "2037-12-03T06:26:28+03:30", "utc": "2037-12-03T02:56:28Z", "ms": 2143421787724.456 }, "end": { "local": "2037-12-03T06:26:28+03:30", "utc": "2037-12-03T02:56:28Z", "ms": 2143421787724.456 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:59 on Wed 2 Dec to 13:19 on Thu 3 Dec.", "fact": "2037-12-02T12:28:56Z → 2037-12-03T09:49:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:26 on the 2nd and 06:26 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 24777 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Mashhad, 2037: Thursday 3 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-03", "confidence": "determinate" } ], "quote": "In Mashhad, Utpannā Ekādaśī 2037 falls on Thursday 3 December. Ekādaśī runs from 15:59 on Wed 2 Dec to 13:19 on Thu 3 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-12-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20486, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-12-04T10:34:40+03:30", "utc": "2037-12-04T07:04:40Z", "ms": 2143523080191.0872 }, "end": { "local": "2037-12-05T07:52:17+03:30", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-04T10:34:40+03:30", "utc": "2037-12-04T07:04:40Z", "ms": 2143523080191.0872 }, "end": { "local": "2037-12-05T07:52:17+03:30", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-04", "window": { "start": { "local": "2037-12-04T16:16:06+03:30", "utc": "2037-12-04T12:46:06Z", "ms": 2143543565825.1228 }, "end": { "local": "2037-12-04T18:09:43+03:30", "utc": "2037-12-04T14:39:43Z", "ms": 2143550382760.0032 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "2037-12-05", "window": { "start": { "local": "2037-12-05T16:16:04+03:30", "utc": "2037-12-05T12:46:04Z", "ms": 2143629963785.8162 }, "end": { "local": "2037-12-05T18:09:48+03:30", "utc": "2037-12-05T14:39:48Z", "ms": 2143636787818.7405 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:35 on Fri 4 Dec to 07:52 on Sat 5 Dec.", "fact": "2037-12-04T07:04:40Z → 2037-12-05T04:22:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:16–18:10 on the 4th, 16:16–18:10 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 114 of 114 minutes on the 4th and 0 of 114 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 20486 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 2037: Friday 4 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-04", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 2037 falls on Friday 4 December. Trayodaśī runs from 10:35 on Fri 4 Dec to 07:52 on Sat 5 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/2037/pradosha-vrata?on=2037-12-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/shivaratri?on=2037-12-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20044, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2037-12-05T07:52:17+03:30", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "end": { "local": "2037-12-06T05:20:37+03:30", "utc": "2037-12-06T01:50:37Z", "ms": 2143677037428.827 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-05T07:52:17+03:30", "utc": "2037-12-05T04:22:17Z", "ms": 2143599737068.0999 }, "end": { "local": "2037-12-06T05:20:37+03:30", "utc": "2037-12-06T01:50:37Z", "ms": 2143677037428.827 } }, "kaala": "nishita", "days": [ { "local_date": "2037-12-04", "window": { "start": { "local": "2037-12-04T22:58:09+03:30", "utc": "2037-12-04T19:28:09Z", "ms": 2143567689330.9243 }, "end": { "local": "2037-12-04T23:46:09+03:30", "utc": "2037-12-04T20:16:09Z", "ms": 2143570569330.9243 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-12-05", "window": { "start": { "local": "2037-12-05T22:58:34+03:30", "utc": "2037-12-05T19:28:34Z", "ms": 2143654113909.2822 }, "end": { "local": "2037-12-05T23:46:34+03:30", "utc": "2037-12-05T20:16:34Z", "ms": 2143656993909.2822 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:52 on Sat 5 Dec to 05:21 on Sun 6 Dec.", "fact": "2037-12-05T04:22:17Z → 2037-12-06T01:50:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:58–23:46 on the 4th, 22:59–23:47 on the 5th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20044 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 2037: Saturday 5 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-05", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 2037 falls on Saturday 5 December. Caturdaśī runs from 07:52 on Sat 5 Dec to 05:21 on Sun 6 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/2037/shivaratri?on=2037-12-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-12-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39320, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-12-09T23:48:09+03:30", "utc": "2037-12-09T20:18:09Z", "ms": 2144002689191.7322 }, "end": { "local": "2037-12-11T00:05:29+03:30", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-09T23:48:09+03:30", "utc": "2037-12-09T20:18:09Z", "ms": 2144002689191.7322 }, "end": { "local": "2037-12-11T00:05:29+03:30", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-10", "window": { "start": { "local": "2037-12-10T11:00:21+03:30", "utc": "2037-12-10T07:30:21Z", "ms": 2144043021213.5383 }, "end": { "local": "2037-12-10T11:48:21+03:30", "utc": "2037-12-10T08:18:21Z", "ms": 2144045901213.5383 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-11", "window": { "start": { "local": "2037-12-11T11:00:49+03:30", "utc": "2037-12-11T07:30:49Z", "ms": 2144129449103.7412 }, "end": { "local": "2037-12-11T11:48:49+03:30", "utc": "2037-12-11T08:18:49Z", "ms": 2144132329103.7412 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:48 on Wed 9 Dec to 00:05 on Fri 11 Dec.", "fact": "2037-12-09T20:18:09Z → 2037-12-10T20:35:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 10th, 11:01–11:49 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 39320 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 2037: Thursday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-10", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 2037 falls on Thursday 10 December. Caturthī runs from 23:48 on Wed 9 Dec to 00:05 on Fri 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/vinayaka-chaturthi?on=2037-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35660, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2037-12-11T00:05:29+03:30", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "end": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-11T00:05:29+03:30", "utc": "2037-12-10T20:35:29Z", "ms": 2144090129051.037 }, "end": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-11", "window": { "start": { "local": "2037-12-11T11:00:49+03:30", "utc": "2037-12-11T07:30:49Z", "ms": 2144129449103.7412 }, "end": { "local": "2037-12-11T11:48:49+03:30", "utc": "2037-12-11T08:18:49Z", "ms": 2144132329103.7412 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:01:17+03:30", "utc": "2037-12-12T07:31:17Z", "ms": 2144215877353.3696 }, "end": { "local": "2037-12-12T11:49:17+03:30", "utc": "2037-12-12T08:19:17Z", "ms": 2144218757353.3696 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:05 on Fri 11 Dec to 01:07 on Sat 12 Dec.", "fact": "2037-12-10T20:35:29Z → 2037-12-11T21:36:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 11th, 11:01–11:49 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35660 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Mashhad, 2037: Friday 11 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-11", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Pañcamī (Mārgaśīrṣa) 2037 falls on Friday 11 December. Pañcamī runs from 00:05 on Fri 11 Dec to 01:07 on Sat 12 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/naga-panchami-margashirsha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29637, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:01:17+03:30", "utc": "2037-12-12T07:31:17Z", "ms": 2144215877353.3696 }, "end": { "local": "2037-12-12T11:49:17+03:30", "utc": "2037-12-12T08:19:17Z", "ms": 2144218757353.3696 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:01:46+03:30", "utc": "2037-12-13T07:31:46Z", "ms": 2144302305929.7012 }, "end": { "local": "2037-12-13T11:49:46+03:30", "utc": "2037-12-13T08:19:46Z", "ms": 2144305185929.7012 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:07 on Sat 12 Dec to 02:48 on Sun 13 Dec.", "fact": "2037-12-11T21:36:57Z → 2037-12-12T23:17:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 12th, 11:02–11:50 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29637 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Mashhad, 2037: Saturday 12 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-12", "confidence": "determinate" } ], "quote": "In Mashhad, Campā Ṣaṣṭhī 2037 falls on Saturday 12 December. Ṣaṣṭhī runs from 01:07 on Sat 12 Dec to 02:48 on Sun 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/champa-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29637, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-12T01:06:57+03:30", "utc": "2037-12-11T21:36:57Z", "ms": 2144180217479.4983 }, "end": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-12", "window": { "start": { "local": "2037-12-12T11:01:17+03:30", "utc": "2037-12-12T07:31:17Z", "ms": 2144215877353.3696 }, "end": { "local": "2037-12-12T11:49:17+03:30", "utc": "2037-12-12T08:19:17Z", "ms": 2144218757353.3696 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:01:46+03:30", "utc": "2037-12-13T07:31:46Z", "ms": 2144302305929.7012 }, "end": { "local": "2037-12-13T11:49:46+03:30", "utc": "2037-12-13T08:19:46Z", "ms": 2144305185929.7012 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:07 on Sat 12 Dec to 02:48 on Sun 13 Dec.", "fact": "2037-12-11T21:36:57Z → 2037-12-12T23:17:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 12th, 11:02–11:50 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29637 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Mashhad, 2037: Saturday 12 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-12", "confidence": "determinate" } ], "quote": "In Mashhad, Skanda Ṣaṣṭhī 2037 falls on Saturday 12 December. Ṣaṣṭhī runs from 01:07 on Sat 12 Dec to 02:48 on Sun 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/skanda-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21797, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "end": { "local": "2037-12-14T04:58:58+03:30", "utc": "2037-12-14T01:28:58Z", "ms": 2144366938094.3157 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-13T02:47:49+03:30", "utc": "2037-12-12T23:17:49Z", "ms": 2144272668796.3264 }, "end": { "local": "2037-12-14T04:58:58+03:30", "utc": "2037-12-14T01:28:58Z", "ms": 2144366938094.3157 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-13", "window": { "start": { "local": "2037-12-13T11:01:46+03:30", "utc": "2037-12-13T07:31:46Z", "ms": 2144302305929.7012 }, "end": { "local": "2037-12-13T11:49:46+03:30", "utc": "2037-12-13T08:19:46Z", "ms": 2144305185929.7012 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2037-12-14", "window": { "start": { "local": "2037-12-14T11:02:15+03:30", "utc": "2037-12-14T07:32:15Z", "ms": 2144388734800.0933 }, "end": { "local": "2037-12-14T11:50:15+03:30", "utc": "2037-12-14T08:20:15Z", "ms": 2144391614800.0933 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:48 on Sun 13 Dec to 04:59 on Mon 14 Dec.", "fact": "2037-12-12T23:17:49Z → 2037-12-14T01:28:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 13th, 11:02–11:50 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21797 s" }, { "step": "ruling", "text": "Mitra Saptamī, Mashhad, 2037: Sunday 13 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mitra-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Mitra saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-13", "confidence": "determinate" } ], "quote": "In Mashhad, Mitra Saptamī 2037 falls on Sunday 13 December. Saptamī runs from 02:48 on Sun 13 Dec to 04:59 on Mon 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/mitra-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/ekadashi?on=2037-12-18", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20728, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2037-12-17T12:22:39+03:30", "utc": "2037-12-17T08:52:39Z", "ms": 2144652758854.4648 }, "end": { "local": "2037-12-18T14:23:21+03:30", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-17T12:22:39+03:30", "utc": "2037-12-17T08:52:39Z", "ms": 2144652758854.4648 }, "end": { "local": "2037-12-18T14:23:21+03:30", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 } }, "kaala": "sunrise", "days": [ { "local_date": "2037-12-17", "window": { "start": { "local": "2037-12-17T06:37:11+03:30", "utc": "2037-12-17T03:07:11Z", "ms": 2144632030705.3762 }, "end": { "local": "2037-12-17T06:37:11+03:30", "utc": "2037-12-17T03:07:11Z", "ms": 2144632030705.3762 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2037-12-18", "window": { "start": { "local": "2037-12-18T06:37:47+03:30", "utc": "2037-12-18T03:07:47Z", "ms": 2144718466713.3748 }, "end": { "local": "2037-12-18T06:37:47+03:30", "utc": "2037-12-18T03:07:47Z", "ms": 2144718466713.3748 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:23 on Thu 17 Dec to 14:23 on Fri 18 Dec.", "fact": "2037-12-17T08:52:39Z → 2037-12-18T10:53:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:37 on the 17th and 06:38 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 20728 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Mashhad, 2037: Friday 18 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-18", "confidence": "determinate" } ], "quote": "In Mashhad, Mokṣadā Ekādaśī 2037 falls on Friday 18 December. Ekādaśī runs from 12:23 on Thu 17 Dec to 14:23 on Fri 18 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/ekadashi?on=2037-12-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9068, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2037-12-18T14:23:21+03:30", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "end": { "local": "2037-12-19T15:54:41+03:30", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-18T14:23:21+03:30", "utc": "2037-12-18T10:53:21Z", "ms": 2144746400907.002 }, "end": { "local": "2037-12-19T15:54:41+03:30", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 } }, "kaala": "madhyahna", "days": [ { "local_date": "2037-12-18", "window": { "start": { "local": "2037-12-18T11:04:13+03:30", "utc": "2037-12-18T07:34:13Z", "ms": 2144734452572.1387 }, "end": { "local": "2037-12-18T11:52:13+03:30", "utc": "2037-12-18T08:22:13Z", "ms": 2144737332572.1387 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2037-12-19", "window": { "start": { "local": "2037-12-19T11:04:42+03:30", "utc": "2037-12-19T07:34:42Z", "ms": 2144820882426.2886 }, "end": { "local": "2037-12-19T11:52:42+03:30", "utc": "2037-12-19T08:22:42Z", "ms": 2144823762426.2886 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:23 on Fri 18 Dec to 15:55 on Sat 19 Dec.", "fact": "2037-12-18T10:53:21Z → 2037-12-19T12:24:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 18th, 11:05–11:53 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9068 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Mashhad, 2037: Saturday 19 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akhanda-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-19", "confidence": "determinate" } ], "quote": "In Mashhad, Akhaṇḍa Dvādaśī 2037 falls on Saturday 19 December. Dvādaśī runs from 14:23 on Fri 18 Dec to 15:55 on Sat 19 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/2037/akhanda-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/pradosha-vrata?on=2037-12-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-19", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1462, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2037-12-19T15:54:41+03:30", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "end": { "local": "2037-12-20T16:52:42+03:30", "utc": "2037-12-20T13:22:42Z", "ms": 2144928162055.9055 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-19T15:54:41+03:30", "utc": "2037-12-19T12:24:41Z", "ms": 2144838281432.3545 }, "end": { "local": "2037-12-20T16:52:42+03:30", "utc": "2037-12-20T13:22:42Z", "ms": 2144928162055.9055 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-19", "window": { "start": { "local": "2037-12-19T16:19:04+03:30", "utc": "2037-12-19T12:49:04Z", "ms": 2144839743690.6426 }, "end": { "local": "2037-12-19T18:13:42+03:30", "utc": "2037-12-19T14:43:42Z", "ms": 2144846622400.5256 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "2037-12-20", "window": { "start": { "local": "2037-12-20T16:19:31+03:30", "utc": "2037-12-20T12:49:31Z", "ms": 2144926170747.4524 }, "end": { "local": "2037-12-20T18:14:10+03:30", "utc": "2037-12-20T14:44:10Z", "ms": 2144933050012.824 } }, "covered_min": 33, "window_min": 115, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:55 on Sat 19 Dec to 16:53 on Sun 20 Dec.", "fact": "2037-12-19T12:24:41Z → 2037-12-20T13:22:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:14 on the 19th, 16:20–18:14 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 115 of 115 minutes on the 19th and 33 of 115 on the 20th.", "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 1462 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 2037: Saturday 19 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-19", "confidence": "boundary" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 2037 falls on Saturday 19 December. Trayodaśī runs from 15:55 on Sat 19 Dec to 16:53 on Sun 20 Dec and covers all of pradoṣa that evening. It also reaches the next evening for 33 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/mashhad/festivals/2037/pradosha-vrata?on=2037-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-21", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2891, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2037-12-21T17:16:45+03:30", "utc": "2037-12-21T13:46:45Z", "ms": 2145016004877.27 }, "end": { "local": "2037-12-22T17:08:41+03:30", "utc": "2037-12-22T13:38:41Z", "ms": 2145101921248.4924 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-21T17:16:45+03:30", "utc": "2037-12-21T13:46:45Z", "ms": 2145016004877.27 }, "end": { "local": "2037-12-22T17:08:41+03:30", "utc": "2037-12-22T13:38:41Z", "ms": 2145101921248.4924 } }, "kaala": "pradosha", "days": [ { "local_date": "2037-12-21", "window": { "start": { "local": "2037-12-21T16:20:00+03:30", "utc": "2037-12-21T12:50:00Z", "ms": 2145012599572.9421 }, "end": { "local": "2037-12-21T18:14:39+03:30", "utc": "2037-12-21T14:44:39Z", "ms": 2145019478936.4001 } }, "covered_min": 58, "window_min": 115, "qualifies": true }, { "local_date": "2037-12-22", "window": { "start": { "local": "2037-12-22T16:20:30+03:30", "utc": "2037-12-22T12:50:30Z", "ms": 2145099030137.4763 }, "end": { "local": "2037-12-22T18:15:09+03:30", "utc": "2037-12-22T14:45:09Z", "ms": 2145105909141.5774 } }, "covered_min": 48, "window_min": 115, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:17 on Mon 21 Dec to 17:09 on Tue 22 Dec.", "fact": "2037-12-21T13:46:45Z → 2037-12-22T13:38:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:20–18:15 on the 21st, 16:21–18:15 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 58 of 115 minutes on the 21st and 48 of 115 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "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 2891 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Mashhad, 2037: Monday 21 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "dattatreyotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Dattatreyotpatti (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-21", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-21", "confidence": "boundary" } ], "quote": "In Mashhad, Dattātreyotpatti (Datta Jayanti) 2037 falls on Monday 21 December. Pūrṇimā runs from 17:17 on Mon 21 Dec to 17:09 on Tue 22 Dec and covers 58 of 115 minutes of pradoṣa that evening. It also reaches the next evening for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/2037/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/2037/sankashta-chaturthi?on=2037-12-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 2037, "local_date": "2037-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18763, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2037-12-25T14:09:17+03:30", "utc": "2037-12-25T10:39:17Z", "ms": 2145350356968.7573 }, "end": { "local": "2037-12-26T12:31:51+03:30", "utc": "2037-12-26T09:01:51Z", "ms": 2145430911267.037 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2037-12-25T14:09:17+03:30", "utc": "2037-12-25T10:39:17Z", "ms": 2145350356968.7573 }, "end": { "local": "2037-12-26T12:31:51+03:30", "utc": "2037-12-26T09:01:51Z", "ms": 2145430911267.037 } }, "kaala": "moonrise", "days": [ { "local_date": "2037-12-25", "window": { "start": { "local": "2037-12-25T19:22:00+03:30", "utc": "2037-12-25T15:52:00Z", "ms": 2145369119582.2483 }, "end": { "local": "2037-12-25T19:22:00+03:30", "utc": "2037-12-25T15:52:00Z", "ms": 2145369119582.2483 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2037-12-26", "window": { "start": { "local": "2037-12-26T20:28:53+03:30", "utc": "2037-12-26T16:58:53Z", "ms": 2145459533484.9517 }, "end": { "local": "2037-12-26T20:28:53+03:30", "utc": "2037-12-26T16:58:53Z", "ms": 2145459533484.9517 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:09 on Fri 25 Dec to 12:32 on Sat 26 Dec.", "fact": "2037-12-25T10:39:17Z → 2037-12-26T09:01:51Z" }, { "step": "kaala", "text": "Moonrise is at 19:22 on the 25th and 20:29 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18763 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 2037: Friday 25 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2037-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2037-12-25", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 2037 falls on Friday 25 December. Caturthī runs from 14:09 on Fri 25 Dec to 12:32 on Sat 26 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/2037/sankashta-chaturthi?on=2037-12-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }