{ "id": "/mashhad/festivals/1975", "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": 1975, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/mashhad/festivals/1975/ekadashi?on=1975-01-08", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6912, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-01-07T08:39:01+03:30", "utc": "1975-01-07T05:09:01Z", "ms": 158303341456.3924 }, "end": { "local": "1975-01-08T08:49:43+03:30", "utc": "1975-01-08T05:19:43Z", "ms": 158390383042.08838 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-07T08:39:01+03:30", "utc": "1975-01-07T05:09:01Z", "ms": 158303341456.3924 }, "end": { "local": "1975-01-08T08:49:43+03:30", "utc": "1975-01-08T05:19:43Z", "ms": 158390383042.08838 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-01-07", "window": { "start": { "local": "1975-01-07T06:43:49+03:30", "utc": "1975-01-07T03:13:49Z", "ms": 158296429375.30307 }, "end": { "local": "1975-01-07T06:43:49+03:30", "utc": "1975-01-07T03:13:49Z", "ms": 158296429375.30307 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-01-08", "window": { "start": { "local": "1975-01-08T06:43:49+03:30", "utc": "1975-01-08T03:13:49Z", "ms": 158382828527.81854 }, "end": { "local": "1975-01-08T06:43:49+03:30", "utc": "1975-01-08T03:13:49Z", "ms": 158382828527.81854 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:39 on Tue 7 Jan to 08:50 on Wed 8 Jan.", "fact": "1975-01-07T05:09:01Z → 1975-01-08T05:19:43Z" }, { "step": "kaala", "text": "Sunrise is at 06:44 on the 7th and 06:44 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is 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 6912 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Mashhad, 1975: Wednesday 8 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": "1975-01-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-08", "confidence": "determinate" } ], "quote": "In Mashhad, Saphalā Ekādaśī 1975 falls on Wednesday 8 January. Ekādaśī runs from 08:39 on Tue 7 Jan to 08:50 on Wed 8 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-01-08", "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/1975/pradosha-vrata?on=1975-01-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21613, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-01-09T09:29:05+03:30", "utc": "1975-01-09T05:59:05Z", "ms": 158479145439.65857 }, "end": { "local": "1975-01-10T10:34:03+03:30", "utc": "1975-01-10T07:04:03Z", "ms": 158569442814.1015 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-09T09:29:05+03:30", "utc": "1975-01-09T05:59:05Z", "ms": 158479145439.65857 }, "end": { "local": "1975-01-10T10:34:03+03:30", "utc": "1975-01-10T07:04:03Z", "ms": 158569442814.1015 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-01-09", "window": { "start": { "local": "1975-01-09T16:33:20+03:30", "utc": "1975-01-09T13:03:20Z", "ms": 158504600084.02216 }, "end": { "local": "1975-01-09T18:26:43+03:30", "utc": "1975-01-09T14:56:43Z", "ms": 158511402858.5033 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1975-01-10", "window": { "start": { "local": "1975-01-10T16:34:15+03:30", "utc": "1975-01-10T13:04:15Z", "ms": 158591055371.1228 }, "end": { "local": "1975-01-10T18:27:30+03:30", "utc": "1975-01-10T14:57:30Z", "ms": 158597849868.18875 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:29 on Thu 9 Jan to 10:34 on Fri 10 Jan.", "fact": "1975-01-09T05:59:05Z → 1975-01-10T07:04:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:33–18:27 on the 9th, 16:34–18:27 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 113 of 113 minutes on the 9th and 0 of 113 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21613 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Thursday 9 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": "1975-01-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-09", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Thursday 9 January. Trayodaśī runs from 09:29 on Thu 9 Jan to 10:34 on Fri 10 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-01-09", "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/1975/shivaratri?on=1975-01-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37892, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-01-10T10:34:03+03:30", "utc": "1975-01-10T07:04:03Z", "ms": 158569442814.1015 }, "end": { "local": "1975-01-11T12:01:43+03:30", "utc": "1975-01-11T08:31:43Z", "ms": 158661102917.31903 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-10T10:34:03+03:30", "utc": "1975-01-10T07:04:03Z", "ms": 158569442814.1015 }, "end": { "local": "1975-01-11T12:01:43+03:30", "utc": "1975-01-11T08:31:43Z", "ms": 158661102917.31903 } }, "kaala": "nishita", "days": [ { "local_date": "1975-01-09", "window": { "start": { "local": "1975-01-09T23:14:30+03:30", "utc": "1975-01-09T19:44:30Z", "ms": 158528670488.32642 }, "end": { "local": "1975-01-10T00:02:30+03:30", "utc": "1975-01-09T20:32:30Z", "ms": 158531550488.32642 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-01-10", "window": { "start": { "local": "1975-01-10T23:14:55+03:30", "utc": "1975-01-10T19:44:55Z", "ms": 158615094735.1201 }, "end": { "local": "1975-01-11T00:02:55+03:30", "utc": "1975-01-10T20:32:55Z", "ms": 158617974735.1201 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:34 on Fri 10 Jan to 12:02 on Sat 11 Jan.", "fact": "1975-01-10T07:04:03Z → 1975-01-11T08:31:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:15–00:03 on the 9th, 23:15–00:03 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 48 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 37892 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Friday 10 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": "1975-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-10", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Friday 10 January. Caturdaśī runs from 10:34 on Fri 10 Jan to 12:02 on Sat 11 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-01-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19437, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-02-13T00:13:06+03:30", "utc": "1975-02-12T20:43:06Z", "ms": 161469785977.33447 } }, "span": { "of": "transit", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 } }, "kaala": "sunset-day", "days": [ { "local_date": "1975-01-14", "window": { "start": { "local": "1975-01-13T16:37:06+03:30", "utc": "1975-01-13T13:07:06Z", "ms": 158850426299.1988 }, "end": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1975-01-15", "window": { "start": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 }, "end": { "local": "1975-01-15T16:39:04+03:30", "utc": "1975-01-15T13:09:04Z", "ms": 159023343934.18924 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1975-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:14 on Tue 14 Jan.", "fact": "1975-01-14T07:44:08Z · 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 16:38, and the day of the 15th ends at 16:39.", "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 19437 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Mashhad, 1975: Monday 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": "1975-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1975-01-13", "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": "1975-01-13", "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 1975 falls on Monday 13 January. It is kept the day before Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 11:14 on Tue 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/1975/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/1975/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19437, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-02-13T00:13:06+03:30", "utc": "1975-02-12T20:43:06Z", "ms": 161469785977.33447 } }, "span": { "of": "transit", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 } }, "kaala": "sunset-day", "days": [ { "local_date": "1975-01-14", "window": { "start": { "local": "1975-01-13T16:37:06+03:30", "utc": "1975-01-13T13:07:06Z", "ms": 158850426299.1988 }, "end": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1975-01-15", "window": { "start": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 }, "end": { "local": "1975-01-15T16:39:04+03:30", "utc": "1975-01-15T13:09:04Z", "ms": 159023343934.18924 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:14 on Tue 14 Jan.", "fact": "1975-01-14T07:44:08Z · 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 16:38, and the day of the 15th ends at 16:39.", "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 19437 s" }, { "step": "ruling", "text": "Pongal, Mashhad, 1975: Tuesday 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": "1975-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1975-01-14", "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": "1975-01-14", "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 1975 falls on Tuesday 14 January. The Sun enters Makara at 11:14 on Tue 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/1975/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/1975/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40448, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-02-13T00:13:06+03:30", "utc": "1975-02-12T20:43:06Z", "ms": 161469785977.33447 } }, "span": { "of": "transit", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 } }, "kaala": "civil-day", "days": [ { "local_date": "1975-01-13", "window": { "start": { "local": "1975-01-13T00:00:00+03:30", "utc": "1975-01-12T20:30:00Z", "ms": 158790600000 }, "end": { "local": "1975-01-14T00:00:00+03:30", "utc": "1975-01-13T20:30:00Z", "ms": 158877000000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1975-01-14", "window": { "start": { "local": "1975-01-14T00:00:00+03:30", "utc": "1975-01-13T20:30:00Z", "ms": 158877000000 }, "end": { "local": "1975-01-15T00:00:00+03:30", "utc": "1975-01-14T20:30:00Z", "ms": 158963400000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:14 on Tue 14 Jan.", "fact": "1975-01-14T07:44:08Z · 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 40448 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Mashhad, 1975: Tuesday 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": "1975-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1975-01-14", "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": "1975-01-14", "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 1975 falls on Tuesday 14 January. The Sun enters Makara at 11:14 on Tue 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19437, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-02-13T00:13:06+03:30", "utc": "1975-02-12T20:43:06Z", "ms": 161469785977.33447 } }, "span": { "of": "transit", "start": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 }, "end": { "local": "1975-01-14T11:14:08+03:30", "utc": "1975-01-14T07:44:08Z", "ms": 158917447574.51642 } }, "kaala": "sunset-day", "days": [ { "local_date": "1975-01-14", "window": { "start": { "local": "1975-01-13T16:37:06+03:30", "utc": "1975-01-13T13:07:06Z", "ms": 158850426299.1988 }, "end": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1975-01-15", "window": { "start": { "local": "1975-01-14T16:38:05+03:30", "utc": "1975-01-14T13:08:05Z", "ms": 158936884783.77014 }, "end": { "local": "1975-01-15T16:39:04+03:30", "utc": "1975-01-15T13:09:04Z", "ms": 159023343934.18924 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1975-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 11:14 on Tue 14 Jan.", "fact": "1975-01-14T07:44:08Z · 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 16:38, and the day of the 15th ends at 16:39.", "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 19437 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Mashhad, 1975: Wednesday 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": "1975-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1975-01-15", "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": "1975-01-15", "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 1975 falls on Wednesday 15 January. It is kept the day after Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 11:14 on Tue 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/1975/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/1975/vinayaka-chaturthi?on=1975-01-16", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31328, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-01-15T20:47:03+03:30", "utc": "1975-01-15T17:17:03Z", "ms": 159038223307.88016 }, "end": { "local": "1975-01-16T23:22:45+03:30", "utc": "1975-01-16T19:52:45Z", "ms": 159133964906.6665 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-15T20:47:03+03:30", "utc": "1975-01-15T17:17:03Z", "ms": 159038223307.88016 }, "end": { "local": "1975-01-16T23:22:45+03:30", "utc": "1975-01-16T19:52:45Z", "ms": 159133964906.6665 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-01-15", "window": { "start": { "local": "1975-01-15T11:16:56+03:30", "utc": "1975-01-15T07:46:56Z", "ms": 159004015514.53265 }, "end": { "local": "1975-01-15T12:04:56+03:30", "utc": "1975-01-15T08:34:56Z", "ms": 159006895514.53265 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-01-16", "window": { "start": { "local": "1975-01-16T11:17:17+03:30", "utc": "1975-01-16T07:47:17Z", "ms": 159090437052.68604 }, "end": { "local": "1975-01-16T12:05:17+03:30", "utc": "1975-01-16T08:35:17Z", "ms": 159093317052.68604 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:47 on Wed 15 Jan to 23:23 on Thu 16 Jan.", "fact": "1975-01-15T17:17:03Z → 1975-01-16T19:52:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 15th, 11:17–12:05 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 31328 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Thursday 16 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-16", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Thursday 16 January. Caturthī runs from 20:47 on Wed 15 Jan to 23:23 on Thu 16 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-01-16", "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/1975/ekadashi?on=1975-01-23", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1699, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-01-23T07:23:10+03:30", "utc": "1975-01-23T03:53:10Z", "ms": 159681189712.30646 }, "end": { "local": "1975-01-24T06:10:48+03:30", "utc": "1975-01-24T02:40:48Z", "ms": 159763248151.42133 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-23T07:23:10+03:30", "utc": "1975-01-23T03:53:10Z", "ms": 159681189712.30646 }, "end": { "local": "1975-01-24T06:10:48+03:30", "utc": "1975-01-24T02:40:48Z", "ms": 159763248151.42133 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-01-23", "window": { "start": { "local": "1975-01-23T06:39:39+03:30", "utc": "1975-01-23T03:09:39Z", "ms": 159678579439.07138 }, "end": { "local": "1975-01-23T06:39:39+03:30", "utc": "1975-01-23T03:09:39Z", "ms": 159678579439.07138 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-01-24", "window": { "start": { "local": "1975-01-24T06:39:07+03:30", "utc": "1975-01-24T03:09:07Z", "ms": 159764947475.0509 }, "end": { "local": "1975-01-24T06:39:07+03:30", "utc": "1975-01-24T03:09:07Z", "ms": 159764947475.0509 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:23 on Thu 23 Jan to 06:11 on Fri 24 Jan.", "fact": "1975-01-23T03:53:10Z → 1975-01-24T02:40:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 23rd and 06:39 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not 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": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1699 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Mashhad, 1975: Thursday 23 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": "1975-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-23", "confidence": "determinate" } ], "quote": "In Mashhad, Putradā Ekādaśī 1975 falls on Thursday 23 January. Ekādaśī runs from 07:23 on Thu 23 Jan to 06:11 on Fri 24 Jan, and is current at sunrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-01-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-01-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24577, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-01-25T04:10:46+03:30", "utc": "1975-01-25T00:40:46Z", "ms": 159842446358.94693 }, "end": { "local": "1975-01-26T01:29:27+03:30", "utc": "1975-01-25T21:59:27Z", "ms": 159919166889.9502 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-01-25T04:10:46+03:30", "utc": "1975-01-25T00:40:46Z", "ms": 159842446358.94693 }, "end": { "local": "1975-01-26T01:29:27+03:30", "utc": "1975-01-25T21:59:27Z", "ms": 159919166889.9502 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-01-24", "window": { "start": { "local": "1975-01-24T16:48:18+03:30", "utc": "1975-01-24T13:18:18Z", "ms": 159801498131.8657 }, "end": { "local": "1975-01-24T18:39:00+03:30", "utc": "1975-01-24T15:09:00Z", "ms": 159808140206.10666 } }, "covered_min": 0, "window_min": 111, "qualifies": false }, { "local_date": "1975-01-25", "window": { "start": { "local": "1975-01-25T16:49:21+03:30", "utc": "1975-01-25T13:19:21Z", "ms": 159887961315.18942 }, "end": { "local": "1975-01-25T18:39:50+03:30", "utc": "1975-01-25T15:09:50Z", "ms": 159894590220.53763 } }, "covered_min": 110, "window_min": 110, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:11 on Sat 25 Jan to 01:29 on Sun 26 Jan.", "fact": "1975-01-25T00:40:46Z → 1975-01-25T21:59:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:48–18:39 on the 24th, 16:49–18:40 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 111 minutes on the 24th and 110 of 110 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 24577 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Saturday 25 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": "1975-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-25", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Saturday 25 January. Trayodaśī runs from 04:11 on Sat 25 Jan to 01:29 on Sun 26 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-01-25", "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/1975/sankashta-chaturthi?on=1975-01-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-01-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27917, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-01-30T07:30:07+03:30", "utc": "1975-01-30T04:00:07Z", "ms": 160286407058.57718 }, "end": { "local": "1975-01-31T04:17:11+03:30", "utc": "1975-01-31T00:47:11Z", "ms": 160361231291.33975 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-01-30T07:30:07+03:30", "utc": "1975-01-30T04:00:07Z", "ms": 160286407058.57718 }, "end": { "local": "1975-01-31T04:17:11+03:30", "utc": "1975-01-31T00:47:11Z", "ms": 160361231291.33975 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-01-29", "window": { "start": { "local": "1975-01-29T19:20:36+03:30", "utc": "1975-01-29T15:50:36Z", "ms": 160242635937.2425 }, "end": { "local": "1975-01-29T19:20:36+03:30", "utc": "1975-01-29T15:50:36Z", "ms": 160242635937.2425 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-01-30", "window": { "start": { "local": "1975-01-30T20:31:54+03:30", "utc": "1975-01-30T17:01:54Z", "ms": 160333314234.56354 }, "end": { "local": "1975-01-30T20:31:54+03:30", "utc": "1975-01-30T17:01:54Z", "ms": 160333314234.56354 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:30 on Thu 30 Jan to 04:17 on Fri 31 Jan.", "fact": "1975-01-30T04:00:07Z → 1975-01-31T00:47:11Z" }, { "step": "kaala", "text": "Moonrise is at 19:21 on the 29th and 20:32 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī 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. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27917 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Thursday 30 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-01-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-01-30", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Thursday 30 January. Caturthī runs from 07:30 on Thu 30 Jan to 04:17 on Fri 31 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-01-30", "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/1975/ekadashi?on=1975-02-06", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22988, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-02-05T22:42:43+03:30", "utc": "1975-02-05T19:12:43Z", "ms": 160859563140.05762 }, "end": { "local": "1975-02-07T00:05:33+03:30", "utc": "1975-02-06T20:35:33Z", "ms": 160950933061.1123 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-05T22:42:43+03:30", "utc": "1975-02-05T19:12:43Z", "ms": 160859563140.05762 }, "end": { "local": "1975-02-07T00:05:33+03:30", "utc": "1975-02-06T20:35:33Z", "ms": 160950933061.1123 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-02-06", "window": { "start": { "local": "1975-02-06T06:29:36+03:30", "utc": "1975-02-06T02:59:36Z", "ms": 160887576291.02838 }, "end": { "local": "1975-02-06T06:29:36+03:30", "utc": "1975-02-06T02:59:36Z", "ms": 160887576291.02838 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-02-07", "window": { "start": { "local": "1975-02-07T06:28:41+03:30", "utc": "1975-02-07T02:58:41Z", "ms": 160973921409.5336 }, "end": { "local": "1975-02-07T06:28:41+03:30", "utc": "1975-02-07T02:58:41Z", "ms": 160973921409.5336 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:43 on Wed 5 Feb to 00:06 on Fri 7 Feb.", "fact": "1975-02-05T19:12:43Z → 1975-02-06T20:35:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:30 on the 6th and 06:29 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 6th and is not on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22988 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Mashhad, 1975: Thursday 6 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": "1975-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-06", "confidence": "determinate" } ], "quote": "In Mashhad, Ṣaṭtilā Ekādaśī 1975 falls on Thursday 6 February. Ekādaśī runs from 22:43 on Wed 5 Feb to 00:06 on Fri 7 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-02-06", "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/1975/pradosha-vrata?on=1975-02-08", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25401, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-02-08T01:53:47+03:30", "utc": "1975-02-07T22:23:47Z", "ms": 161043826772.69064 }, "end": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-08T01:53:47+03:30", "utc": "1975-02-07T22:23:47Z", "ms": 161043826772.69064 }, "end": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-02-07", "window": { "start": { "local": "1975-02-07T17:03:09+03:30", "utc": "1975-02-07T13:33:09Z", "ms": 161011988741.98285 }, "end": { "local": "1975-02-07T18:50:26+03:30", "utc": "1975-02-07T15:20:26Z", "ms": 161018425591.3894 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1975-02-08", "window": { "start": { "local": "1975-02-08T17:04:12+03:30", "utc": "1975-02-08T13:34:12Z", "ms": 161098451921.7743 }, "end": { "local": "1975-02-08T18:51:13+03:30", "utc": "1975-02-08T15:21:13Z", "ms": 161104872656.10455 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:54 on Sat 8 Feb to 04:00 on Sun 9 Feb.", "fact": "1975-02-07T22:23:47Z → 1975-02-09T00:30:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:03–18:50 on the 7th, 17:04–18:51 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 0 of 107 minutes on the 7th and 107 of 107 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 25401 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Saturday 8 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": "1975-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-08", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Saturday 8 February. Trayodaśī runs from 01:54 on Sat 8 Feb to 04:00 on Sun 9 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-02-08", "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/1975/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-09", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 369, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 }, "end": { "local": "1975-02-10T06:19:39+03:30", "utc": "1975-02-10T02:49:39Z", "ms": 161232579113.98654 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 }, "end": { "local": "1975-02-10T06:19:39+03:30", "utc": "1975-02-10T02:49:39Z", "ms": 161232579113.98654 } }, "kaala": "arunodaya", "days": [ { "local_date": "1975-02-09", "window": { "start": { "local": "1975-02-09T04:39:47+03:30", "utc": "1975-02-09T01:09:47Z", "ms": 161140186694.92093 }, "end": { "local": "1975-02-09T06:26:47+03:30", "utc": "1975-02-09T02:56:47Z", "ms": 161146607429.2512 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1975-02-10", "window": { "start": { "local": "1975-02-10T04:39:04+03:30", "utc": "1975-02-10T01:09:04Z", "ms": 161226543924.88306 }, "end": { "local": "1975-02-10T06:25:48+03:30", "utc": "1975-02-10T02:55:48Z", "ms": 161232948388.9382 } }, "covered_min": 101, "window_min": 107, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:00 on Sun 9 Feb to 06:20 on Mon 10 Feb.", "fact": "1975-02-09T00:30:26Z → 1975-02-10T02:49:39Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:40–06:27 on the 9th, 04:39–06:26 on the 10th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 107 of 107 minutes on the 9th and 101 of 107 on the 10th.", "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 369 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Mashhad, 1975: Sunday 9 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-09", "confidence": "boundary" } ], "quote": "In Mashhad, Yama Tarpaṇa 1975 falls on Sunday 9 February. Caturdaśī runs from 04:00 on Sun 9 Feb to 06:20 on Mon 10 Feb and covers all of aruṇodaya that dawn. It also reaches the next dawn for 101 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/1975/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/1975/shivaratri?on=1975-02-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13856, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 }, "end": { "local": "1975-02-10T06:19:39+03:30", "utc": "1975-02-10T02:49:39Z", "ms": 161232579113.98654 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-09T04:00:26+03:30", "utc": "1975-02-09T00:30:26Z", "ms": 161137825851.54453 }, "end": { "local": "1975-02-10T06:19:39+03:30", "utc": "1975-02-10T02:49:39Z", "ms": 161232579113.98654 } }, "kaala": "nishita", "days": [ { "local_date": "1975-02-08", "window": { "start": { "local": "1975-02-08T23:21:30+03:30", "utc": "1975-02-08T19:51:30Z", "ms": 161121089675.51276 }, "end": { "local": "1975-02-09T00:09:30+03:30", "utc": "1975-02-08T20:39:30Z", "ms": 161123969675.51276 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-02-09", "window": { "start": { "local": "1975-02-09T23:21:32+03:30", "utc": "1975-02-09T19:51:32Z", "ms": 161207491648.7314 }, "end": { "local": "1975-02-10T00:09:32+03:30", "utc": "1975-02-09T20:39:32Z", "ms": 161210371648.7314 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:00 on Sun 9 Feb to 06:20 on Mon 10 Feb.", "fact": "1975-02-09T00:30:26Z → 1975-02-10T02:49:39Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:21–00:09 on the 8th, 23:22–00:10 on the 9th.", "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 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13856 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Sunday 9 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-09", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Sunday 9 February. Caturdaśī runs from 04:00 on Sun 9 Feb to 06:20 on Mon 10 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-02-09", "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/1975/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1341, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-02-14T16:17:21+03:30", "utc": "1975-02-14T12:47:21Z", "ms": 161614041224.38416 }, "end": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-14T16:17:21+03:30", "utc": "1975-02-14T12:47:21Z", "ms": 161614041224.38416 }, "end": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-02-14", "window": { "start": { "local": "1975-02-14T17:10:26+03:30", "utc": "1975-02-14T13:40:26Z", "ms": 161617226243.51596 }, "end": { "local": "1975-02-14T18:55:47+03:30", "utc": "1975-02-14T15:25:47Z", "ms": 161623547259.50778 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "1975-02-15", "window": { "start": { "local": "1975-02-15T17:11:28+03:30", "utc": "1975-02-15T13:41:28Z", "ms": 161703687670.67526 }, "end": { "local": "1975-02-15T18:56:32+03:30", "utc": "1975-02-15T15:26:32Z", "ms": 161709991621.5963 } }, "covered_min": 83, "window_min": 105, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:17 on Fri 14 Feb to 18:34 on Sat 15 Feb.", "fact": "1975-02-14T12:47:21Z → 1975-02-15T15:04:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:56 on the 14th, 17:11–18:57 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 105 of 105 minutes on the 14th and 83 of 105 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "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 1341 s" }, { "step": "ruling", "text": "Tila Caturthī, Mashhad, 1975: Friday 14 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1975-02-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-14", "confidence": "boundary" } ], "quote": "In Mashhad, Tila Caturthī 1975 falls on Friday 14 February. Caturthī runs from 16:17 on Fri 14 Feb to 18:34 on Sat 15 Feb and covers all of pradoṣa that evening. It also reaches the next evening for 83 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/1975/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/1975/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14838, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-02-14T16:17:21+03:30", "utc": "1975-02-14T12:47:21Z", "ms": 161614041224.38416 }, "end": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-14T16:17:21+03:30", "utc": "1975-02-14T12:47:21Z", "ms": 161614041224.38416 }, "end": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-02-14", "window": { "start": { "local": "1975-02-14T11:22:03+03:30", "utc": "1975-02-14T07:52:03Z", "ms": 161596322744.72736 }, "end": { "local": "1975-02-14T12:10:03+03:30", "utc": "1975-02-14T08:40:03Z", "ms": 161599202744.72736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-02-15", "window": { "start": { "local": "1975-02-15T11:22:01+03:30", "utc": "1975-02-15T07:52:01Z", "ms": 161682720767.06494 }, "end": { "local": "1975-02-15T12:10:01+03:30", "utc": "1975-02-15T08:40:01Z", "ms": 161685600767.06494 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:17 on Fri 14 Feb to 18:34 on Sat 15 Feb.", "fact": "1975-02-14T12:47:21Z → 1975-02-15T15:04:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 14th, 11:22–12:10 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 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14838 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Mashhad, 1975: Saturday 15 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-15", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1975 falls on Saturday 15 February. Caturthī runs from 16:17 on Fri 14 Feb to 18:34 on Sat 15 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23050, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "end": { "local": "1975-02-16T20:32:28+03:30", "utc": "1975-02-16T17:02:28Z", "ms": 161802148464.44016 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "end": { "local": "1975-02-16T20:32:28+03:30", "utc": "1975-02-16T17:02:28Z", "ms": 161802148464.44016 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-02-15", "window": { "start": { "local": "1975-02-15T11:22:01+03:30", "utc": "1975-02-15T07:52:01Z", "ms": 161682720767.06494 }, "end": { "local": "1975-02-15T12:10:01+03:30", "utc": "1975-02-15T08:40:01Z", "ms": 161685600767.06494 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-02-16", "window": { "start": { "local": "1975-02-16T11:21:58+03:30", "utc": "1975-02-16T07:51:58Z", "ms": 161769118043.77567 }, "end": { "local": "1975-02-16T12:09:58+03:30", "utc": "1975-02-16T08:39:58Z", "ms": 161771998043.77567 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:34 on Sat 15 Feb to 20:32 on Sun 16 Feb.", "fact": "1975-02-15T15:04:11Z → 1975-02-16T17:02:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 15th, 11:22–12:10 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23050 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Mashhad, 1975: Sunday 16 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-16", "confidence": "determinate" } ], "quote": "In Mashhad, Śrī Pañcamī 1975 falls on Sunday 16 February. Pañcamī runs from 18:34 on Sat 15 Feb to 20:32 on Sun 16 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23050, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "end": { "local": "1975-02-16T20:32:28+03:30", "utc": "1975-02-16T17:02:28Z", "ms": 161802148464.44016 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-15T18:34:11+03:30", "utc": "1975-02-15T15:04:11Z", "ms": 161708650529.79257 }, "end": { "local": "1975-02-16T20:32:28+03:30", "utc": "1975-02-16T17:02:28Z", "ms": 161802148464.44016 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-02-15", "window": { "start": { "local": "1975-02-15T11:22:01+03:30", "utc": "1975-02-15T07:52:01Z", "ms": 161682720767.06494 }, "end": { "local": "1975-02-15T12:10:01+03:30", "utc": "1975-02-15T08:40:01Z", "ms": 161685600767.06494 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-02-16", "window": { "start": { "local": "1975-02-16T11:21:58+03:30", "utc": "1975-02-16T07:51:58Z", "ms": 161769118043.77567 }, "end": { "local": "1975-02-16T12:09:58+03:30", "utc": "1975-02-16T08:39:58Z", "ms": 161771998043.77567 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:34 on Sat 15 Feb to 20:32 on Sun 16 Feb.", "fact": "1975-02-15T15:04:11Z → 1975-02-16T17:02:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 15th, 11:22–12:10 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23050 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Mashhad, 1975: Sunday 16 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-16", "confidence": "determinate" } ], "quote": "In Mashhad, Vasanta Pañcamī 1975 falls on Sunday 16 February. Pañcamī runs from 18:34 on Sat 15 Feb to 20:32 on Sun 16 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20062, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-02-17T22:03:13+03:30", "utc": "1975-02-17T18:33:13Z", "ms": 161893992740.28635 }, "end": { "local": "1975-02-18T22:57:27+03:30", "utc": "1975-02-18T19:27:27Z", "ms": 161983646677.36627 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-17T22:03:13+03:30", "utc": "1975-02-17T18:33:13Z", "ms": 161893992740.28635 }, "end": { "local": "1975-02-18T22:57:27+03:30", "utc": "1975-02-18T19:27:27Z", "ms": 161983646677.36627 } }, "kaala": "arunodaya", "days": [ { "local_date": "1975-02-18", "window": { "start": { "local": "1975-02-18T04:32:41+03:30", "utc": "1975-02-18T01:02:41Z", "ms": 161917361276.2188 }, "end": { "local": "1975-02-18T06:17:11+03:30", "utc": "1975-02-18T02:47:11Z", "ms": 161923630768.65503 } }, "covered_min": 104, "window_min": 104, "qualifies": true }, { "local_date": "1975-02-19", "window": { "start": { "local": "1975-02-19T04:31:49+03:30", "utc": "1975-02-19T01:01:49Z", "ms": 162003708747.89978 }, "end": { "local": "1975-02-19T06:16:01+03:30", "utc": "1975-02-19T02:46:01Z", "ms": 162009960857.96207 } }, "covered_min": 0, "window_min": 104, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:03 on Mon 17 Feb to 22:57 on Tue 18 Feb.", "fact": "1975-02-17T18:33:13Z → 1975-02-18T19:27:27Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:33–06:17 on the 18th, 04:32–06:16 on the 19th.", "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 104 of 104 minutes on the 18th and 0 of 104 on the 19th.", "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 20062 s" }, { "step": "ruling", "text": "Ratha Saptamī, Mashhad, 1975: Tuesday 18 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-18", "confidence": "determinate" } ], "quote": "In Mashhad, Ratha Saptamī 1975 falls on Tuesday 18 February. Saptamī runs from 22:03 on Mon 17 Feb to 22:57 on Tue 18 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-02-22", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32991, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-02-21T21:02:34+03:30", "utc": "1975-02-21T17:32:34Z", "ms": 162235953868.82916 }, "end": { "local": "1975-02-22T18:48:55+03:30", "utc": "1975-02-22T15:18:55Z", "ms": 162314334983.8457 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-21T21:02:34+03:30", "utc": "1975-02-21T17:32:34Z", "ms": 162235953868.82916 }, "end": { "local": "1975-02-22T18:48:55+03:30", "utc": "1975-02-22T15:18:55Z", "ms": 162314334983.8457 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-02-22", "window": { "start": { "local": "1975-02-22T06:12:25+03:30", "utc": "1975-02-22T02:42:25Z", "ms": 162268944934.35175 }, "end": { "local": "1975-02-22T06:12:25+03:30", "utc": "1975-02-22T02:42:25Z", "ms": 162268944934.35175 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-02-23", "window": { "start": { "local": "1975-02-23T06:11:11+03:30", "utc": "1975-02-23T02:41:11Z", "ms": 162355271005.74905 }, "end": { "local": "1975-02-23T06:11:11+03:30", "utc": "1975-02-23T02:41:11Z", "ms": 162355271005.74905 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:03 on Fri 21 Feb to 18:49 on Sat 22 Feb.", "fact": "1975-02-21T17:32:34Z → 1975-02-22T15:18:55Z" }, { "step": "kaala", "text": "Sunrise is at 06:12 on the 22nd and 06:11 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 22nd and is not 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 32991 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Mashhad, 1975: Saturday 22 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": "1975-02-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-22", "confidence": "determinate" } ], "quote": "In Mashhad, Jayā Ekādaśī 1975 falls on Saturday 22 February. Ekādaśī runs from 21:03 on Fri 21 Feb to 18:49 on Sat 22 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-02-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13536, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-02-22T18:48:55+03:30", "utc": "1975-02-22T15:18:55Z", "ms": 162314334983.8457 }, "end": { "local": "1975-02-23T15:54:55+03:30", "utc": "1975-02-23T12:24:55Z", "ms": 162390294797.6084 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-22T18:48:55+03:30", "utc": "1975-02-22T15:18:55Z", "ms": 162314334983.8457 }, "end": { "local": "1975-02-23T15:54:55+03:30", "utc": "1975-02-23T12:24:55Z", "ms": 162390294797.6084 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-02-22", "window": { "start": { "local": "1975-02-22T11:21:27+03:30", "utc": "1975-02-22T07:51:27Z", "ms": 162287486667.1894 }, "end": { "local": "1975-02-22T12:09:27+03:30", "utc": "1975-02-22T08:39:27Z", "ms": 162290366667.1894 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-02-23", "window": { "start": { "local": "1975-02-23T11:21:19+03:30", "utc": "1975-02-23T07:51:19Z", "ms": 162373879058.96216 }, "end": { "local": "1975-02-23T12:09:19+03:30", "utc": "1975-02-23T08:39:19Z", "ms": 162376759058.96216 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:49 on Sat 22 Feb to 15:55 on Sun 23 Feb.", "fact": "1975-02-22T15:18:55Z → 1975-02-23T12:24:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 22nd, 11:21–12:09 on the 23rd.", "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 22nd and 48 of 48 on the 23rd.", "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 13536 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Mashhad, 1975: Sunday 23 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-23", "confidence": "determinate" } ], "quote": "In Mashhad, Bhīṣma Dvādaśī 1975 falls on Sunday 23 February. Dvādaśī runs from 18:49 on Sat 22 Feb to 15:55 on Sun 23 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-02-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5072, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-02-23T15:54:55+03:30", "utc": "1975-02-23T12:24:55Z", "ms": 162390294797.6084 }, "end": { "local": "1975-02-24T12:29:07+03:30", "utc": "1975-02-24T08:59:07Z", "ms": 162464347410.8562 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-23T15:54:55+03:30", "utc": "1975-02-23T12:24:55Z", "ms": 162390294797.6084 }, "end": { "local": "1975-02-24T12:29:07+03:30", "utc": "1975-02-24T08:59:07Z", "ms": 162464347410.8562 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-02-23", "window": { "start": { "local": "1975-02-23T17:19:27+03:30", "utc": "1975-02-23T13:49:27Z", "ms": 162395367112.1753 }, "end": { "local": "1975-02-23T19:02:11+03:30", "utc": "1975-02-23T15:32:11Z", "ms": 162401530984.76013 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "1975-02-24", "window": { "start": { "local": "1975-02-24T17:20:25+03:30", "utc": "1975-02-24T13:50:25Z", "ms": 162481825474.91608 }, "end": { "local": "1975-02-24T19:02:51+03:30", "utc": "1975-02-24T15:32:51Z", "ms": 162487971467.79068 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:55 on Sun 23 Feb to 12:29 on Mon 24 Feb.", "fact": "1975-02-23T12:24:55Z → 1975-02-24T08:59:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:02 on the 23rd, 17:20–19:03 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 103 of 103 minutes on the 23rd and 0 of 102 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 5072 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Sunday 23 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": "1975-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-23", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Sunday 23 February. Trayodaśī runs from 15:55 on Sun 23 Feb to 12:29 on Mon 24 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-02-23", "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/1975/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9550, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-02-25T08:41:52+03:30", "utc": "1975-02-25T05:11:52Z", "ms": 162537111629.11758 }, "end": { "local": "1975-02-26T04:44:30+03:30", "utc": "1975-02-26T01:14:30Z", "ms": 162609270049.6873 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1975-02-25T08:41:52+03:30", "utc": "1975-02-25T05:11:52Z", "ms": 162537111629.11758 }, "end": { "local": "1975-02-26T04:44:30+03:30", "utc": "1975-02-26T01:14:30Z", "ms": 162609270049.6873 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-02-25", "window": { "start": { "local": "1975-02-25T11:21:02+03:30", "utc": "1975-02-25T07:51:02Z", "ms": 162546661957.76956 }, "end": { "local": "1975-02-25T12:09:02+03:30", "utc": "1975-02-25T08:39:02Z", "ms": 162549541957.76956 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-02-26", "window": { "start": { "local": "1975-02-26T11:20:53+03:30", "utc": "1975-02-26T07:50:53Z", "ms": 162633052506.5973 }, "end": { "local": "1975-02-26T12:08:53+03:30", "utc": "1975-02-26T08:38:53Z", "ms": 162635932506.5973 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:42 on Tue 25 Feb to 04:45 on Wed 26 Feb.", "fact": "1975-02-25T05:11:52Z → 1975-02-26T01:14:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 25th, 11:21–12:09 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9550 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Mashhad, 1975: Tuesday 25 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maghi-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Maghi purnima (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-25", "confidence": "determinate" } ], "quote": "In Mashhad, Māghī Pūrṇimā 1975 falls on Tuesday 25 February. Pūrṇimā runs from 08:42 on Tue 25 Feb to 04:45 on Wed 26 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-02-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-02-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9576, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-02-28T17:49:54+03:30", "utc": "1975-02-28T14:19:54Z", "ms": 162829193608.78586 }, "end": { "local": "1975-03-01T15:07:55+03:30", "utc": "1975-03-01T11:37:55Z", "ms": 162905875391.18558 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-02-28T17:49:54+03:30", "utc": "1975-02-28T14:19:54Z", "ms": 162829193608.78586 }, "end": { "local": "1975-03-01T15:07:55+03:30", "utc": "1975-03-01T11:37:55Z", "ms": 162905875391.18558 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-02-28", "window": { "start": { "local": "1975-02-28T20:29:29+03:30", "utc": "1975-02-28T16:59:29Z", "ms": 162838769346.2867 }, "end": { "local": "1975-02-28T20:29:29+03:30", "utc": "1975-02-28T16:59:29Z", "ms": 162838769346.2867 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-03-01", "window": { "start": { "local": "1975-03-01T21:38:55+03:30", "utc": "1975-03-01T18:08:55Z", "ms": 162929334531.97757 }, "end": { "local": "1975-03-01T21:38:55+03:30", "utc": "1975-03-01T18:08:55Z", "ms": 162929334531.97757 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:50 on Fri 28 Feb to 15:08 on Sat 1 Mar.", "fact": "1975-02-28T14:19:54Z → 1975-03-01T11:37:55Z" }, { "step": "kaala", "text": "Moonrise is at 20:29 on the 28th and 21:39 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 28th and is not 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 9576 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Friday 28 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": "1975-02-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-02-28", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Friday 28 February. Caturthī runs from 17:50 on Fri 28 Feb to 15:08 on Sat 1 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-02-28", "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/1975/ekadashi?on=1975-03-08", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33360, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-03-07T15:11:22+03:30", "utc": "1975-03-07T11:41:22Z", "ms": 163424482164.0783 }, "end": { "local": "1975-03-08T17:23:16+03:30", "utc": "1975-03-08T13:53:16Z", "ms": 163518796257.3121 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-07T15:11:22+03:30", "utc": "1975-03-07T11:41:22Z", "ms": 163424482164.0783 }, "end": { "local": "1975-03-08T17:23:16+03:30", "utc": "1975-03-08T13:53:16Z", "ms": 163518796257.3121 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-03-07", "window": { "start": { "local": "1975-03-07T05:55:22+03:30", "utc": "1975-03-07T02:25:22Z", "ms": 163391122005.3777 }, "end": { "local": "1975-03-07T05:55:22+03:30", "utc": "1975-03-07T02:25:22Z", "ms": 163391122005.3777 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-03-08", "window": { "start": { "local": "1975-03-08T05:53:59+03:30", "utc": "1975-03-08T02:23:59Z", "ms": 163477438792.43378 }, "end": { "local": "1975-03-08T05:53:59+03:30", "utc": "1975-03-08T02:23:59Z", "ms": 163477438792.43378 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:11 on Fri 7 Mar to 17:23 on Sat 8 Mar.", "fact": "1975-03-07T11:41:22Z → 1975-03-08T13:53:16Z" }, { "step": "kaala", "text": "Sunrise is at 05:55 on the 7th and 05:54 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is 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 33360 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Mashhad, 1975: Saturday 8 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": "1975-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-08", "confidence": "determinate" } ], "quote": "In Mashhad, Vijayā Ekādaśī 1975 falls on Saturday 8 March. Ekādaśī runs from 15:11 on Fri 7 Mar to 17:23 on Sat 8 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-03-08", "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/1975/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-10", "confidence": "boundary", "boundary_reasons": [ "tie-break-disputed" ], "boundary_margin_s": 2811, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-03-10T22:21:18+03:30", "utc": "1975-03-10T18:51:18Z", "ms": 163709478333.9084 }, "end": { "local": "1975-03-12T00:52:14+03:30", "utc": "1975-03-11T21:22:14Z", "ms": 163804933658.0722 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-10T22:21:18+03:30", "utc": "1975-03-10T18:51:18Z", "ms": 163709478333.9084 }, "end": { "local": "1975-03-12T00:52:14+03:30", "utc": "1975-03-11T21:22:14Z", "ms": 163804933658.0722 } }, "kaala": "nishita", "days": [ { "local_date": "1975-03-10", "window": { "start": { "local": "1975-03-10T23:17:38+03:30", "utc": "1975-03-10T19:47:38Z", "ms": 163712858256.94525 }, "end": { "local": "1975-03-11T00:05:38+03:30", "utc": "1975-03-10T20:35:38Z", "ms": 163715738256.94525 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-03-11", "window": { "start": { "local": "1975-03-11T23:17:23+03:30", "utc": "1975-03-11T19:47:23Z", "ms": 163799242763.18982 }, "end": { "local": "1975-03-12T00:05:23+03:30", "utc": "1975-03-11T20:35:23Z", "ms": 163802122763.18982 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:21 on Mon 10 Mar to 00:52 on Wed 12 Mar.", "fact": "1975-03-10T18:51:18Z → 1975-03-11T21:22:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:18–00:06 on the 10th, 23:17–00:05 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 48 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both nights qualify and the cited authorities disagree. The one covered longer is ruled, as a boundary.", "fact": "priority: disputed → greater-coverage · margin 2811 s" }, { "step": "ruling", "text": "Mahāśivarātri, Mashhad, 1975: Monday 10 March.", "fact": "confidence: boundary (tie-break-disputed)" } ], "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": "1975-03-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-10", "confidence": "boundary" } ], "quote": "In Mashhad, Mahāśivarātri 1975 falls on Monday 10 March. Caturdaśī runs from 22:21 on Mon 10 Mar to 00:52 on Wed 12 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/1975/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/1975/pradosha-vrata?on=1975-03-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2302, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-03-09T19:49:27+03:30", "utc": "1975-03-09T16:19:27Z", "ms": 163613966902.5171 }, "end": { "local": "1975-03-10T22:21:18+03:30", "utc": "1975-03-10T18:51:18Z", "ms": 163709478333.9084 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-09T19:49:27+03:30", "utc": "1975-03-09T16:19:27Z", "ms": 163613966902.5171 }, "end": { "local": "1975-03-10T22:21:18+03:30", "utc": "1975-03-10T18:51:18Z", "ms": 163709478333.9084 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-03-09", "window": { "start": { "local": "1975-03-09T17:32:36+03:30", "utc": "1975-03-09T14:02:36Z", "ms": 163605755919.14783 }, "end": { "local": "1975-03-09T19:11:05+03:30", "utc": "1975-03-09T15:41:05Z", "ms": 163611664587.63156 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1975-03-10", "window": { "start": { "local": "1975-03-10T17:33:30+03:30", "utc": "1975-03-10T14:03:30Z", "ms": 163692210169.25986 }, "end": { "local": "1975-03-10T19:11:40+03:30", "utc": "1975-03-10T15:41:40Z", "ms": 163698100325.97595 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:49 on Sun 9 Mar to 22:21 on Mon 10 Mar.", "fact": "1975-03-09T16:19:27Z → 1975-03-10T18:51:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:33–19:11 on the 9th, 17:34–19:12 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 9th and 98 of 98 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2302 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Monday 10 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": "1975-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-10", "confidence": "boundary" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Monday 10 March. Trayodaśī runs from 19:49 on Sun 9 Mar to 22:21 on Mon 10 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-03-10", "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/1975/vinayaka-chaturthi?on=1975-03-16", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1736, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-03-16T09:22:40+03:30", "utc": "1975-03-16T05:52:40Z", "ms": 164181160002.73224 }, "end": { "local": "1975-03-17T10:47:32+03:30", "utc": "1975-03-17T07:17:32Z", "ms": 164272651608.09702 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-16T09:22:40+03:30", "utc": "1975-03-16T05:52:40Z", "ms": 164181160002.73224 }, "end": { "local": "1975-03-17T10:47:32+03:30", "utc": "1975-03-17T07:17:32Z", "ms": 164272651608.09702 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-03-16", "window": { "start": { "local": "1975-03-16T11:16:44+03:30", "utc": "1975-03-16T07:46:44Z", "ms": 164188004306.55493 }, "end": { "local": "1975-03-16T12:04:44+03:30", "utc": "1975-03-16T08:34:44Z", "ms": 164190884306.55493 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-03-17", "window": { "start": { "local": "1975-03-17T11:16:27+03:30", "utc": "1975-03-17T07:46:27Z", "ms": 164274387340.41235 }, "end": { "local": "1975-03-17T12:04:27+03:30", "utc": "1975-03-17T08:34:27Z", "ms": 164277267340.41235 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:23 on Sun 16 Mar to 10:48 on Mon 17 Mar.", "fact": "1975-03-16T05:52:40Z → 1975-03-17T07:17:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 16th, 11:16–12:04 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1736 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Sunday 16 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": "1975-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-16", "confidence": "boundary" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Sunday 16 March. Caturthī runs from 09:23 on Sun 16 Mar to 10:48 on Mon 17 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-03-16", "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/1975/ekadashi?on=1975-03-23", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4257, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-03-23T07:10:08+03:30", "utc": "1975-03-23T03:40:08Z", "ms": 164778008160.74048 }, "end": { "local": "1975-03-24T04:20:04+03:30", "utc": "1975-03-24T00:50:04Z", "ms": 164854203519.8077 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-23T07:10:08+03:30", "utc": "1975-03-23T03:40:08Z", "ms": 164778008160.74048 }, "end": { "local": "1975-03-24T04:20:04+03:30", "utc": "1975-03-24T00:50:04Z", "ms": 164854203519.8077 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-03-23", "window": { "start": { "local": "1975-03-23T05:32:28+03:30", "utc": "1975-03-23T02:02:28Z", "ms": 164772148066.53677 }, "end": { "local": "1975-03-23T05:32:28+03:30", "utc": "1975-03-23T02:02:28Z", "ms": 164772148066.53677 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-03-24", "window": { "start": { "local": "1975-03-24T05:31:00+03:30", "utc": "1975-03-24T02:01:00Z", "ms": 164858460465.59235 }, "end": { "local": "1975-03-24T05:31:00+03:30", "utc": "1975-03-24T02:01:00Z", "ms": 164858460465.59235 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:10 on Sun 23 Mar to 04:20 on Mon 24 Mar.", "fact": "1975-03-23T03:40:08Z → 1975-03-24T00:50:04Z" }, { "step": "kaala", "text": "Sunrise is at 05:32 on the 23rd and 05:31 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not 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": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 4257 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Mashhad, 1975: Sunday 23 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": "1975-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-23", "confidence": "determinate" } ], "quote": "In Mashhad, Āmalakī Ekādaśī 1975 falls on Sunday 23 March. Ekādaśī runs from 07:10 on Sun 23 Mar to 04:20 on Mon 24 Mar, and is current at sunrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-03-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-03-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7670, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-03-25T01:02:59+03:30", "utc": "1975-03-24T21:32:59Z", "ms": 164928778608.39764 }, "end": { "local": "1975-03-25T21:28:00+03:30", "utc": "1975-03-25T17:58:00Z", "ms": 165002279838.0311 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-25T01:02:59+03:30", "utc": "1975-03-24T21:32:59Z", "ms": 164928778608.39764 }, "end": { "local": "1975-03-25T21:28:00+03:30", "utc": "1975-03-25T17:58:00Z", "ms": 165002279838.0311 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-03-24", "window": { "start": { "local": "1975-03-24T17:45:47+03:30", "utc": "1975-03-24T14:15:47Z", "ms": 164902546578.47595 }, "end": { "local": "1975-03-24T19:19:37+03:30", "utc": "1975-03-24T15:49:37Z", "ms": 164908176746.21176 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1975-03-25", "window": { "start": { "local": "1975-03-25T17:46:38+03:30", "utc": "1975-03-25T14:16:38Z", "ms": 164988997866.08612 }, "end": { "local": "1975-03-25T19:20:10+03:30", "utc": "1975-03-25T15:50:10Z", "ms": 164994609512.05515 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:03 on Tue 25 Mar to 21:28 on Tue 25 Mar.", "fact": "1975-03-24T21:32:59Z → 1975-03-25T17:58:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:46–19:20 on the 24th, 17:47–19:20 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 24th and 94 of 94 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 7670 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Tuesday 25 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": "1975-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-25", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Tuesday 25 March. Trayodaśī runs from 01:03 on Tue 25 Mar to 21:28 on Tue 25 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-03-25", "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/1975/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-26", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 126, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-03-26T17:45:23+03:30", "utc": "1975-03-26T14:15:23Z", "ms": 165075323089.85828 }, "end": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-26T17:45:23+03:30", "utc": "1975-03-26T14:15:23Z", "ms": 165075323089.85828 }, "end": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 } }, "kaala": "sayahna", "days": [ { "local_date": "1975-03-26", "window": { "start": { "local": "1975-03-26T15:19:36+03:30", "utc": "1975-03-26T11:49:36Z", "ms": 165066576277.12906 }, "end": { "local": "1975-03-26T17:47:29+03:30", "utc": "1975-03-26T14:17:29Z", "ms": 165075449043.6979 } }, "covered_min": 2, "window_min": 148, "qualifies": true }, { "local_date": "1975-03-27", "window": { "start": { "local": "1975-03-27T15:20:00+03:30", "utc": "1975-03-27T11:50:00Z", "ms": 165152999627.34512 }, "end": { "local": "1975-03-27T17:48:20+03:30", "utc": "1975-03-27T14:18:20Z", "ms": 165161900128.987 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:45 on Wed 26 Mar to 14:06 on Thu 27 Mar.", "fact": "1975-03-26T14:15:23Z → 1975-03-27T10:36:02Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:20–17:47 on the 26th, 15:20–17:48 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 2 of 148 minutes on the 26th and 0 of 148 on the 27th.", "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 126 s < 300 s" }, { "step": "ruling", "text": "Holikā Dahana, Mashhad, 1975: Wednesday 26 March.", "fact": "confidence: boundary (margin)" } ], "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": "1975-03-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-26", "confidence": "boundary" } ], "quote": "In Mashhad, Holikā Dahana 1975 falls on Wednesday 26 March. Pūrṇimā runs from 17:45 on Wed 26 Mar to 14:06 on Thu 27 Mar and covers 2 of 148 minutes of sāyāhna that late afternoon. It is 2 min 06 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-27", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 126, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-03-26T17:45:23+03:30", "utc": "1975-03-26T14:15:23Z", "ms": 165075323089.85828 }, "end": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1975-03-26T17:45:23+03:30", "utc": "1975-03-26T14:15:23Z", "ms": 165075323089.85828 }, "end": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 } }, "kaala": "sayahna", "days": [ { "local_date": "1975-03-26", "window": { "start": { "local": "1975-03-26T15:19:36+03:30", "utc": "1975-03-26T11:49:36Z", "ms": 165066576277.12906 }, "end": { "local": "1975-03-26T17:47:29+03:30", "utc": "1975-03-26T14:17:29Z", "ms": 165075449043.6979 } }, "covered_min": 2, "window_min": 148, "qualifies": true }, { "local_date": "1975-03-27", "window": { "start": { "local": "1975-03-27T15:20:00+03:30", "utc": "1975-03-27T11:50:00Z", "ms": 165152999627.34512 }, "end": { "local": "1975-03-27T17:48:20+03:30", "utc": "1975-03-27T14:18:20Z", "ms": 165161900128.987 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1975-03-26", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:45 on Wed 26 Mar to 14:06 on Thu 27 Mar.", "fact": "1975-03-26T14:15:23Z → 1975-03-27T10:36:02Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:20–17:47 on the 26th, 15:20–17:48 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 2 of 148 minutes on the 26th and 0 of 148 on the 27th.", "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 126 s < 300 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Wednesday 26 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Mashhad, 1975: Thursday 27 March.", "fact": "confidence: boundary (margin)" } ], "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": "1975-03-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-27", "confidence": "boundary" } ], "quote": "In Mashhad, Holī 1975 falls on Thursday 27 March. It is kept the day after Holikā Dahana, which falls on Wednesday 26 March. Pūrṇimā runs from 17:45 on Wed 26 Mar to 14:06 on Thu 27 Mar and covers 2 of 148 minutes of sāyāhna on the 26th. It is 2 min 06 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18948, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 }, "end": { "local": "1975-03-28T10:40:58+03:30", "utc": "1975-03-28T07:10:58Z", "ms": 165222658284.4419 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-03-27T14:06:02+03:30", "utc": "1975-03-27T10:36:02Z", "ms": 165148561992.23135 }, "end": { "local": "1975-03-28T10:40:58+03:30", "utc": "1975-03-28T07:10:58Z", "ms": 165222658284.4419 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-03-27", "window": { "start": { "local": "1975-03-27T05:26:38+03:30", "utc": "1975-03-27T01:56:38Z", "ms": 165117397620.77756 }, "end": { "local": "1975-03-27T05:26:38+03:30", "utc": "1975-03-27T01:56:38Z", "ms": 165117397620.77756 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-03-28", "window": { "start": { "local": "1975-03-28T05:25:10+03:30", "utc": "1975-03-28T01:55:10Z", "ms": 165203710098.7343 }, "end": { "local": "1975-03-28T05:25:10+03:30", "utc": "1975-03-28T01:55:10Z", "ms": 165203710098.7343 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:06 on Thu 27 Mar to 10:41 on Fri 28 Mar.", "fact": "1975-03-27T10:36:02Z → 1975-03-28T07:10:58Z" }, { "step": "kaala", "text": "Sunrise is at 05:27 on the 27th and 05:25 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18948 s" }, { "step": "ruling", "text": "Vasantotsava, Mashhad, 1975: Friday 28 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": "1975-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-28", "confidence": "determinate" } ], "quote": "In Mashhad, Vasantotsava 1975 falls on Friday 28 March. Pratipadā runs from 14:06 on Thu 27 Mar to 10:41 on Fri 28 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-03-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21687, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-03-30T05:15:21+03:30", "utc": "1975-03-30T01:45:21Z", "ms": 165375921310.49405 }, "end": { "local": "1975-03-31T03:32:28+03:30", "utc": "1975-03-31T00:02:28Z", "ms": 165456148223.43375 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-03-30T05:15:21+03:30", "utc": "1975-03-30T01:45:21Z", "ms": 165375921310.49405 }, "end": { "local": "1975-03-31T03:32:28+03:30", "utc": "1975-03-31T00:02:28Z", "ms": 165456148223.43375 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-03-29", "window": { "start": { "local": "1975-03-29T20:24:21+03:30", "utc": "1975-03-29T16:54:21Z", "ms": 165344060968.16315 }, "end": { "local": "1975-03-29T20:24:21+03:30", "utc": "1975-03-29T16:54:21Z", "ms": 165344060968.16315 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-03-30", "window": { "start": { "local": "1975-03-30T21:31:02+03:30", "utc": "1975-03-30T18:01:02Z", "ms": 165434461532.07404 }, "end": { "local": "1975-03-30T21:31:02+03:30", "utc": "1975-03-30T18:01:02Z", "ms": 165434461532.07404 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:15 on Sun 30 Mar to 03:32 on Mon 31 Mar.", "fact": "1975-03-30T01:45:21Z → 1975-03-31T00:02:28Z" }, { "step": "kaala", "text": "Moonrise is at 20:24 on the 29th and 21:31 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī 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. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21687 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Sunday 30 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": "1975-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-03-30", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Sunday 30 March. Caturthī runs from 05:15 on Sun 30 Mar to 03:32 on Mon 31 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-03-30", "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/1975/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23311, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-04-03T03:16:38+03:30", "utc": "1975-04-02T23:46:38Z", "ms": 165714398146.08902 }, "end": { "local": "1975-04-04T04:42:34+03:30", "utc": "1975-04-04T01:12:34Z", "ms": 165805953883.15997 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-03T03:16:38+03:30", "utc": "1975-04-02T23:46:38Z", "ms": 165714398146.08902 }, "end": { "local": "1975-04-04T04:42:34+03:30", "utc": "1975-04-04T01:12:34Z", "ms": 165805953883.15997 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-03", "window": { "start": { "local": "1975-04-03T11:11:22+03:30", "utc": "1975-04-03T07:41:22Z", "ms": 165742882347.79248 }, "end": { "local": "1975-04-03T11:59:22+03:30", "utc": "1975-04-03T08:29:22Z", "ms": 165745762347.79248 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-04-04", "window": { "start": { "local": "1975-04-04T11:11:05+03:30", "utc": "1975-04-04T07:41:05Z", "ms": 165829264713.29834 }, "end": { "local": "1975-04-04T11:59:05+03:30", "utc": "1975-04-04T08:29:05Z", "ms": 165832144713.29834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:17 on Thu 3 Apr to 04:43 on Fri 4 Apr.", "fact": "1975-04-02T23:46:38Z → 1975-04-04T01:12:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 3rd, 11:11–11:59 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23311 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Mashhad, 1975: Thursday 3 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-03", "confidence": "determinate" } ], "quote": "In Mashhad, Śītalāṣṭamī 1975 falls on Thursday 3 April. Aṣṭamī runs from 03:17 on Thu 3 Apr to 04:43 on Fri 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-04-07", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13766, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-04-06T09:01:36+03:30", "utc": "1975-04-06T05:31:36Z", "ms": 165994296293.3919 }, "end": { "local": "1975-04-07T11:31:23+03:30", "utc": "1975-04-07T08:01:23Z", "ms": 166089683498.81058 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-06T09:01:36+03:30", "utc": "1975-04-06T05:31:36Z", "ms": 165994296293.3919 }, "end": { "local": "1975-04-07T11:31:23+03:30", "utc": "1975-04-07T08:01:23Z", "ms": 166089683498.81058 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-04-06", "window": { "start": { "local": "1975-04-06T05:12:11+03:30", "utc": "1975-04-06T01:42:11Z", "ms": 165980530756.31537 }, "end": { "local": "1975-04-06T05:12:11+03:30", "utc": "1975-04-06T01:42:11Z", "ms": 165980530756.31537 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-04-07", "window": { "start": { "local": "1975-04-07T05:10:46+03:30", "utc": "1975-04-07T01:40:46Z", "ms": 166066845653.45746 }, "end": { "local": "1975-04-07T05:10:46+03:30", "utc": "1975-04-07T01:40:46Z", "ms": 166066845653.45746 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:02 on Sun 6 Apr to 11:31 on Mon 7 Apr.", "fact": "1975-04-06T05:31:36Z → 1975-04-07T08:01:23Z" }, { "step": "kaala", "text": "Sunrise is at 05:12 on the 6th and 05:11 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13766 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Mashhad, 1975: Monday 7 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": "1975-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-07", "confidence": "determinate" } ], "quote": "In Mashhad, Pāpamocanī Ekādaśī 1975 falls on Monday 7 April. Ekādaśī runs from 09:02 on Sun 6 Apr to 11:31 on Mon 7 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-04-08", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5989, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-04-08T14:00:09+03:30", "utc": "1975-04-08T10:30:09Z", "ms": 166185009411.75543 }, "end": { "local": "1975-04-09T16:19:33+03:30", "utc": "1975-04-09T12:49:33Z", "ms": 166279773360.52676 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-08T14:00:09+03:30", "utc": "1975-04-08T10:30:09Z", "ms": 166185009411.75543 }, "end": { "local": "1975-04-09T16:19:33+03:30", "utc": "1975-04-09T12:49:33Z", "ms": 166279773360.52676 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-04-08", "window": { "start": { "local": "1975-04-08T17:58:31+03:30", "utc": "1975-04-08T14:28:31Z", "ms": 166199311114.12354 }, "end": { "local": "1975-04-08T19:27:47+03:30", "utc": "1975-04-08T15:57:47Z", "ms": 166204666524.25644 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1975-04-09", "window": { "start": { "local": "1975-04-09T17:59:22+03:30", "utc": "1975-04-09T14:29:22Z", "ms": 166285762135.31467 }, "end": { "local": "1975-04-09T19:28:20+03:30", "utc": "1975-04-09T15:58:20Z", "ms": 166291099568.5862 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:00 on Tue 8 Apr to 16:20 on Wed 9 Apr.", "fact": "1975-04-08T10:30:09Z → 1975-04-09T12:49:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:28 on the 8th, 17:59–19:28 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 89 of 89 minutes on the 8th and 0 of 89 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 5989 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Tuesday 8 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": "1975-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-08", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Tuesday 8 April. Trayodaśī runs from 14:00 on Tue 8 Apr to 16:20 on Wed 9 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-04-08", "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/1975/shivaratri?on=1975-04-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17097, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-04-09T16:19:33+03:30", "utc": "1975-04-09T12:49:33Z", "ms": 166279773360.52676 }, "end": { "local": "1975-04-10T18:23:44+03:30", "utc": "1975-04-10T14:53:44Z", "ms": 166373624313.03146 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-09T16:19:33+03:30", "utc": "1975-04-09T12:49:33Z", "ms": 166279773360.52676 }, "end": { "local": "1975-04-10T18:23:44+03:30", "utc": "1975-04-10T14:53:44Z", "ms": 166373624313.03146 } }, "kaala": "nishita", "days": [ { "local_date": "1975-04-09", "window": { "start": { "local": "1975-04-09T23:08:58+03:30", "utc": "1975-04-09T19:38:58Z", "ms": 166304337510.08295 }, "end": { "local": "1975-04-09T23:56:58+03:30", "utc": "1975-04-09T20:26:58Z", "ms": 166307217510.08295 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-04-10", "window": { "start": { "local": "1975-04-10T23:08:41+03:30", "utc": "1975-04-10T19:38:41Z", "ms": 166390721381.41934 }, "end": { "local": "1975-04-10T23:56:41+03:30", "utc": "1975-04-10T20:26:41Z", "ms": 166393601381.41934 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:20 on Wed 9 Apr to 18:24 on Thu 10 Apr.", "fact": "1975-04-09T12:49:33Z → 1975-04-10T14:53:44Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:09–23:57 on the 9th, 23:09–23:57 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 17097 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Wednesday 9 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": "1975-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-09", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Wednesday 9 April. Caturdaśī runs from 16:20 on Wed 9 Apr to 18:24 on Thu 10 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-04-09", "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/1975/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29512, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-04-11T20:08:59+03:30", "utc": "1975-04-11T16:38:59Z", "ms": 166466338767.42303 }, "end": { "local": "1975-04-12T21:32:58+03:30", "utc": "1975-04-12T18:02:58Z", "ms": 166557778430.43448 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-11T20:08:59+03:30", "utc": "1975-04-11T16:38:59Z", "ms": 166466338767.42303 }, "end": { "local": "1975-04-12T21:32:58+03:30", "utc": "1975-04-12T18:02:58Z", "ms": 166557778430.43448 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-11", "window": { "start": { "local": "1975-04-11T11:09:07+03:30", "utc": "1975-04-11T07:39:07Z", "ms": 166433946932.40564 }, "end": { "local": "1975-04-11T11:57:07+03:30", "utc": "1975-04-11T08:27:07Z", "ms": 166436826932.40564 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-12", "window": { "start": { "local": "1975-04-12T11:08:51+03:30", "utc": "1975-04-12T07:38:51Z", "ms": 166520331102.13806 }, "end": { "local": "1975-04-12T11:56:51+03:30", "utc": "1975-04-12T08:26:51Z", "ms": 166523211102.13806 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:09 on Fri 11 Apr to 21:33 on Sat 12 Apr.", "fact": "1975-04-11T16:38:59Z → 1975-04-12T18:02:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 11th, 11:09–11:57 on the 12th.", "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 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29512 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Mashhad, 1975: Saturday 12 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-12", "confidence": "determinate" } ], "quote": "In Mashhad, Navarātrārambha (Caitra) (Chaitra Navratri) 1975 falls on Saturday 12 April. Pratipadā runs from 20:09 on Fri 11 Apr to 21:33 on Sat 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1849, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1975-04-14T05:31:51+03:30", "utc": "1975-04-14T02:01:51Z", "ms": 166672911386.18256 }, "end": { "local": "1975-05-15T02:22:05+03:30", "utc": "1975-05-14T22:52:05Z", "ms": 169339925033.23517 } }, "span": { "of": "transit", "start": { "local": "1975-04-14T05:31:51+03:30", "utc": "1975-04-14T02:01:51Z", "ms": 166672911386.18256 }, "end": { "local": "1975-04-14T05:31:51+03:30", "utc": "1975-04-14T02:01:51Z", "ms": 166672911386.18256 } }, "kaala": "day", "days": [ { "local_date": "1975-04-13", "window": { "start": { "local": "1975-04-13T05:02:24+03:30", "utc": "1975-04-13T01:32:24Z", "ms": 166584744498.43192 }, "end": { "local": "1975-04-14T05:01:03+03:30", "utc": "1975-04-14T01:31:03Z", "ms": 166671062801.04715 } }, "covered_min": 0, "window_min": 1439, "qualifies": false }, { "local_date": "1975-04-14", "window": { "start": { "local": "1975-04-14T05:01:03+03:30", "utc": "1975-04-14T01:31:03Z", "ms": 166671062801.04715 }, "end": { "local": "1975-04-15T04:59:42+03:30", "utc": "1975-04-15T01:29:42Z", "ms": 166757381696.52615 } }, "covered_min": 1, "window_min": 1439, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 05:32 on Mon 14 Apr.", "fact": "1975-04-14T02:01:51Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:02 on the 13th, and from 05:01 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 1849 s" }, { "step": "ruling", "text": "Vaiśākhī, Mashhad, 1975: Monday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1975-04-14", "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": "1975-04-14", "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 1975 falls on Monday 14 April. The Sun enters Meṣa at 05:32 on Mon 14 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38250, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-04-13T22:34:05+03:30", "utc": "1975-04-13T19:04:05Z", "ms": 166647845246.77448 }, "end": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-13T22:34:05+03:30", "utc": "1975-04-13T19:04:05Z", "ms": 166647845246.77448 }, "end": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-13", "window": { "start": { "local": "1975-04-13T11:08:36+03:30", "utc": "1975-04-13T07:38:36Z", "ms": 166606715562.793 }, "end": { "local": "1975-04-13T11:56:36+03:30", "utc": "1975-04-13T08:26:36Z", "ms": 166609595562.793 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-14", "window": { "start": { "local": "1975-04-14T11:08:20+03:30", "utc": "1975-04-14T07:38:20Z", "ms": 166693100326.98273 }, "end": { "local": "1975-04-14T11:56:20+03:30", "utc": "1975-04-14T08:26:20Z", "ms": 166695980326.98273 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:34 on Sun 13 Apr to 23:11 on Mon 14 Apr.", "fact": "1975-04-13T19:04:05Z → 1975-04-14T19:40:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 13th, 11:08–11:56 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 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38250 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Mashhad, 1975: Monday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-14", "confidence": "determinate" } ], "quote": "In Mashhad, Gaurī Tṛtīyā (Gangaur) 1975 falls on Monday 14 April. Tṛtīyā runs from 22:34 on Sun 13 Apr to 23:11 on Mon 14 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38250, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-04-13T22:34:05+03:30", "utc": "1975-04-13T19:04:05Z", "ms": 166647845246.77448 }, "end": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-13T22:34:05+03:30", "utc": "1975-04-13T19:04:05Z", "ms": 166647845246.77448 }, "end": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-13", "window": { "start": { "local": "1975-04-13T11:08:36+03:30", "utc": "1975-04-13T07:38:36Z", "ms": 166606715562.793 }, "end": { "local": "1975-04-13T11:56:36+03:30", "utc": "1975-04-13T08:26:36Z", "ms": 166609595562.793 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-14", "window": { "start": { "local": "1975-04-14T11:08:20+03:30", "utc": "1975-04-14T07:38:20Z", "ms": 166693100326.98273 }, "end": { "local": "1975-04-14T11:56:20+03:30", "utc": "1975-04-14T08:26:20Z", "ms": 166695980326.98273 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:34 on Sun 13 Apr to 23:11 on Mon 14 Apr.", "fact": "1975-04-13T19:04:05Z → 1975-04-14T19:40:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 13th, 11:08–11:56 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 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38250 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Mashhad, 1975: Monday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-14", "confidence": "determinate" } ], "quote": "In Mashhad, Saubhāgya Śayana Vrata 1975 falls on Monday 14 April. Tṛtīyā runs from 22:34 on Sun 13 Apr to 23:11 on Mon 14 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-04-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40467, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 }, "end": { "local": "1975-04-15T23:21:23+03:30", "utc": "1975-04-15T19:51:23Z", "ms": 166823482654.61407 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-14T23:10:47+03:30", "utc": "1975-04-14T19:40:47Z", "ms": 166736447199.41693 }, "end": { "local": "1975-04-15T23:21:23+03:30", "utc": "1975-04-15T19:51:23Z", "ms": 166823482654.61407 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-14", "window": { "start": { "local": "1975-04-14T11:08:20+03:30", "utc": "1975-04-14T07:38:20Z", "ms": 166693100326.98273 }, "end": { "local": "1975-04-14T11:56:20+03:30", "utc": "1975-04-14T08:26:20Z", "ms": 166695980326.98273 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-15", "window": { "start": { "local": "1975-04-15T11:08:05+03:30", "utc": "1975-04-15T07:38:05Z", "ms": 166779485406.94373 }, "end": { "local": "1975-04-15T11:56:05+03:30", "utc": "1975-04-15T08:26:05Z", "ms": 166782365406.94373 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:11 on Mon 14 Apr to 23:21 on Tue 15 Apr.", "fact": "1975-04-14T19:40:47Z → 1975-04-15T19:51:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 14th, 11:08–11:56 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 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 40467 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Tuesday 15 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": "1975-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-15", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Tuesday 15 April. Caturthī runs from 23:11 on Mon 14 Apr to 23:21 on Tue 15 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40094, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-04-15T23:21:23+03:30", "utc": "1975-04-15T19:51:23Z", "ms": 166823482654.61407 }, "end": { "local": "1975-04-16T23:04:05+03:30", "utc": "1975-04-16T19:34:05Z", "ms": 166908845192.69092 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-15T23:21:23+03:30", "utc": "1975-04-15T19:51:23Z", "ms": 166823482654.61407 }, "end": { "local": "1975-04-16T23:04:05+03:30", "utc": "1975-04-16T19:34:05Z", "ms": 166908845192.69092 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-15", "window": { "start": { "local": "1975-04-15T11:08:05+03:30", "utc": "1975-04-15T07:38:05Z", "ms": 166779485406.94373 }, "end": { "local": "1975-04-15T11:56:05+03:30", "utc": "1975-04-15T08:26:05Z", "ms": 166782365406.94373 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-16", "window": { "start": { "local": "1975-04-16T11:07:51+03:30", "utc": "1975-04-16T07:37:51Z", "ms": 166865870814.68488 }, "end": { "local": "1975-04-16T11:55:51+03:30", "utc": "1975-04-16T08:25:51Z", "ms": 166868750814.68488 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:21 on Tue 15 Apr to 23:04 on Wed 16 Apr.", "fact": "1975-04-15T19:51:23Z → 1975-04-16T19:34:05Z" }, { "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": "Pañcamī 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 40094 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Mashhad, 1975: Wednesday 16 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-16", "confidence": "determinate" } ], "quote": "In Mashhad, Lakṣmī Pañcamī 1975 falls on Wednesday 16 April. Pañcamī runs from 23:21 on Tue 15 Apr to 23:04 on Wed 16 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26357, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-04-18T21:00:41+03:30", "utc": "1975-04-18T17:30:41Z", "ms": 167074240761.37207 }, "end": { "local": "1975-04-19T19:14:26+03:30", "utc": "1975-04-19T15:44:26Z", "ms": 167154266244.33005 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-18T21:00:41+03:30", "utc": "1975-04-18T17:30:41Z", "ms": 167074240761.37207 }, "end": { "local": "1975-04-19T19:14:26+03:30", "utc": "1975-04-19T15:44:26Z", "ms": 167154266244.33005 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-18", "window": { "start": { "local": "1975-04-18T11:07:23+03:30", "utc": "1975-04-18T07:37:23Z", "ms": 167038642661.46405 }, "end": { "local": "1975-04-18T11:55:23+03:30", "utc": "1975-04-18T08:25:23Z", "ms": 167041522661.46405 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-19", "window": { "start": { "local": "1975-04-19T11:07:09+03:30", "utc": "1975-04-19T07:37:09Z", "ms": 167125029125.02454 }, "end": { "local": "1975-04-19T11:55:09+03:30", "utc": "1975-04-19T08:25:09Z", "ms": 167127909125.02454 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:01 on Fri 18 Apr to 19:14 on Sat 19 Apr.", "fact": "1975-04-18T17:30:41Z → 1975-04-19T15:44:26Z" }, { "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": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26357 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Mashhad, 1975: Saturday 19 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-19", "confidence": "determinate" } ], "quote": "In Mashhad, Bhavānī Utpatti 1975 falls on Saturday 19 April. Aṣṭamī runs from 21:01 on Fri 18 Apr to 19:14 on Sat 19 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18357, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1975-04-19T19:14:26+03:30", "utc": "1975-04-19T15:44:26Z", "ms": 167154266244.33005 }, "end": { "local": "1975-04-20T17:00:53+03:30", "utc": "1975-04-20T13:30:53Z", "ms": 167232653347.17886 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-19T19:14:26+03:30", "utc": "1975-04-19T15:44:26Z", "ms": 167154266244.33005 }, "end": { "local": "1975-04-20T17:00:53+03:30", "utc": "1975-04-20T13:30:53Z", "ms": 167232653347.17886 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-19", "window": { "start": { "local": "1975-04-19T11:07:09+03:30", "utc": "1975-04-19T07:37:09Z", "ms": 167125029125.02454 }, "end": { "local": "1975-04-19T11:55:09+03:30", "utc": "1975-04-19T08:25:09Z", "ms": 167127909125.02454 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-04-20", "window": { "start": { "local": "1975-04-20T11:06:56+03:30", "utc": "1975-04-20T07:36:56Z", "ms": 167211415965.82498 }, "end": { "local": "1975-04-20T11:54:56+03:30", "utc": "1975-04-20T08:24:56Z", "ms": 167214295965.82498 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 19:14 on Sat 19 Apr to 17:01 on Sun 20 Apr.", "fact": "1975-04-19T15:44:26Z → 1975-04-20T13:30:53Z" }, { "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": "Navamī 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 18357 s" }, { "step": "ruling", "text": "Rāma Navamī, Mashhad, 1975: Sunday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-20", "confidence": "determinate" } ], "quote": "In Mashhad, Rāma Navamī 1975 falls on Sunday 20 April. Navamī runs from 19:14 on Sat 19 Apr to 17:01 on Sun 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-04-22", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23920, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-04-21T14:23:58+03:30", "utc": "1975-04-21T10:53:58Z", "ms": 167309637673.68155 }, "end": { "local": "1975-04-22T11:29:13+03:30", "utc": "1975-04-22T07:59:13Z", "ms": 167385553180.68863 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-21T14:23:58+03:30", "utc": "1975-04-21T10:53:58Z", "ms": 167309637673.68155 }, "end": { "local": "1975-04-22T11:29:13+03:30", "utc": "1975-04-22T07:59:13Z", "ms": 167385553180.68863 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-04-21", "window": { "start": { "local": "1975-04-21T04:51:49+03:30", "utc": "1975-04-21T01:21:49Z", "ms": 167275309024.8758 }, "end": { "local": "1975-04-21T04:51:49+03:30", "utc": "1975-04-21T01:21:49Z", "ms": 167275309024.8758 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-04-22", "window": { "start": { "local": "1975-04-22T04:50:33+03:30", "utc": "1975-04-22T01:20:33Z", "ms": 167361632834.4636 }, "end": { "local": "1975-04-22T04:50:33+03:30", "utc": "1975-04-22T01:20:33Z", "ms": 167361632834.4636 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:24 on Mon 21 Apr to 11:29 on Tue 22 Apr.", "fact": "1975-04-21T10:53:58Z → 1975-04-22T07:59:13Z" }, { "step": "kaala", "text": "Sunrise is at 04:52 on the 21st and 04:51 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 21st and is on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23920 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Mashhad, 1975: Tuesday 22 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": "1975-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-22", "confidence": "determinate" } ], "quote": "In Mashhad, Kāmadā Ekādaśī 1975 falls on Tuesday 22 April. Ekādaśī runs from 14:24 on Mon 21 Apr to 11:29 on Tue 22 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-04-22", "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/1975/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9762, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-04-23T08:23:37+03:30", "utc": "1975-04-23T04:53:37Z", "ms": 167460817373.38596 }, "end": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-23T08:23:37+03:30", "utc": "1975-04-23T04:53:37Z", "ms": 167460817373.38596 }, "end": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-23", "window": { "start": { "local": "1975-04-23T11:06:19+03:30", "utc": "1975-04-23T07:36:19Z", "ms": 167470578893.00122 }, "end": { "local": "1975-04-23T11:54:19+03:30", "utc": "1975-04-23T08:24:19Z", "ms": 167473458893.00122 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-04-24", "window": { "start": { "local": "1975-04-24T11:06:07+03:30", "utc": "1975-04-24T07:36:07Z", "ms": 167556967387.97327 }, "end": { "local": "1975-04-24T11:54:07+03:30", "utc": "1975-04-24T08:24:07Z", "ms": 167559847387.97327 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:24 on Wed 23 Apr to 05:15 on Thu 24 Apr.", "fact": "1975-04-23T04:53:37Z → 1975-04-24T01:45:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 23rd, 11:06–11:54 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9762 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Mashhad, 1975: Wednesday 23 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-23", "confidence": "determinate" } ], "quote": "In Mashhad, Anaṅga Trayodaśī 1975 falls on Wednesday 23 April. Trayodaśī runs from 08:24 on Wed 23 Apr to 05:15 on Thu 24 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-04-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34737, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-04-23T08:23:37+03:30", "utc": "1975-04-23T04:53:37Z", "ms": 167460817373.38596 }, "end": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-23T08:23:37+03:30", "utc": "1975-04-23T04:53:37Z", "ms": 167460817373.38596 }, "end": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-04-22", "window": { "start": { "local": "1975-04-22T18:10:29+03:30", "utc": "1975-04-22T14:40:29Z", "ms": 167409628835.2463 }, "end": { "local": "1975-04-22T19:35:39+03:30", "utc": "1975-04-22T16:05:39Z", "ms": 167414739318.9089 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1975-04-23", "window": { "start": { "local": "1975-04-23T18:11:20+03:30", "utc": "1975-04-23T14:41:20Z", "ms": 167496080323.28668 }, "end": { "local": "1975-04-23T19:36:14+03:30", "utc": "1975-04-23T16:06:14Z", "ms": 167501174005.63376 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:24 on Wed 23 Apr to 05:15 on Thu 24 Apr.", "fact": "1975-04-23T04:53:37Z → 1975-04-24T01:45:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:36 on the 22nd, 18:11–19:36 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 22nd and 85 of 85 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34737 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Wednesday 23 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": "1975-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-23", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Wednesday 23 April. Trayodaśī runs from 08:24 on Wed 23 Apr to 05:15 on Thu 24 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-04-23", "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/1975/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21056, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 }, "end": { "local": "1975-04-25T02:12:37+03:30", "utc": "1975-04-24T22:42:37Z", "ms": 167611357322.85977 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-24T05:15:11+03:30", "utc": "1975-04-24T01:45:11Z", "ms": 167535911332.95416 }, "end": { "local": "1975-04-25T02:12:37+03:30", "utc": "1975-04-24T22:42:37Z", "ms": 167611357322.85977 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-24", "window": { "start": { "local": "1975-04-24T11:06:07+03:30", "utc": "1975-04-24T07:36:07Z", "ms": 167556967387.97327 }, "end": { "local": "1975-04-24T11:54:07+03:30", "utc": "1975-04-24T08:24:07Z", "ms": 167559847387.97327 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-04-25", "window": { "start": { "local": "1975-04-25T11:05:56+03:30", "utc": "1975-04-25T07:35:56Z", "ms": 167643356335.9477 }, "end": { "local": "1975-04-25T11:53:56+03:30", "utc": "1975-04-25T08:23:56Z", "ms": 167646236335.9477 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:15 on Thu 24 Apr to 02:13 on Fri 25 Apr.", "fact": "1975-04-24T01:45:11Z → 1975-04-24T22:42:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 24th, 11:06–11:54 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 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 21056 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Mashhad, 1975: Thursday 24 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vishnu-damanaka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Madanabhanji, (Bengal & Orissa) (paraviddha), Sivadamanaka caturdasi, Visnudamanaka caturdasi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-24", "confidence": "determinate" } ], "quote": "In Mashhad, Viṣṇudamanaka Caturdaśī 1975 falls on Thursday 24 April. Caturdaśī runs from 05:15 on Thu 24 Apr to 02:13 on Fri 25 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31999, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-04-25T02:12:37+03:30", "utc": "1975-04-24T22:42:37Z", "ms": 167611357322.85977 }, "end": { "local": "1975-04-25T23:24:55+03:30", "utc": "1975-04-25T19:54:55Z", "ms": 167687694733.06894 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1975-04-25T02:12:37+03:30", "utc": "1975-04-24T22:42:37Z", "ms": 167611357322.85977 }, "end": { "local": "1975-04-25T23:24:55+03:30", "utc": "1975-04-25T19:54:55Z", "ms": 167687694733.06894 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-04-25", "window": { "start": { "local": "1975-04-25T11:05:56+03:30", "utc": "1975-04-25T07:35:56Z", "ms": 167643356335.9477 }, "end": { "local": "1975-04-25T11:53:56+03:30", "utc": "1975-04-25T08:23:56Z", "ms": 167646236335.9477 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-04-26", "window": { "start": { "local": "1975-04-26T11:05:46+03:30", "utc": "1975-04-26T07:35:46Z", "ms": 167729745752.8758 }, "end": { "local": "1975-04-26T11:53:46+03:30", "utc": "1975-04-26T08:23:46Z", "ms": 167732625752.8758 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:13 on Fri 25 Apr to 23:25 on Fri 25 Apr.", "fact": "1975-04-24T22:42:37Z → 1975-04-25T19:54:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 25th, 11:06–11:54 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31999 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Mashhad, 1975: Friday 25 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chaitri-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-25", "confidence": "determinate" } ], "quote": "In Mashhad, Caitrī Pūrṇimā 1975 falls on Friday 25 April. Pūrṇimā runs from 02:13 on Fri 25 Apr to 23:25 on Fri 25 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-04-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11947, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-04-28T17:55:08+03:30", "utc": "1975-04-28T14:25:08Z", "ms": 167927107624.36386 }, "end": { "local": "1975-04-29T17:24:55+03:30", "utc": "1975-04-29T13:54:55Z", "ms": 168011694997.2902 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-04-28T17:55:08+03:30", "utc": "1975-04-28T14:25:08Z", "ms": 167927107624.36386 }, "end": { "local": "1975-04-29T17:24:55+03:30", "utc": "1975-04-29T13:54:55Z", "ms": 168011694997.2902 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-04-28", "window": { "start": { "local": "1975-04-28T21:14:15+03:30", "utc": "1975-04-28T17:44:15Z", "ms": 167939054788.54684 }, "end": { "local": "1975-04-28T21:14:15+03:30", "utc": "1975-04-28T17:44:15Z", "ms": 167939054788.54684 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-04-29", "window": { "start": { "local": "1975-04-29T22:07:25+03:30", "utc": "1975-04-29T18:37:25Z", "ms": 168028644846.8095 }, "end": { "local": "1975-04-29T22:07:25+03:30", "utc": "1975-04-29T18:37:25Z", "ms": 168028644846.8095 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:55 on Mon 28 Apr to 17:25 on Tue 29 Apr.", "fact": "1975-04-28T14:25:08Z → 1975-04-29T13:54:55Z" }, { "step": "kaala", "text": "Moonrise is at 21:14 on the 28th and 22:07 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī 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. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11947 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Monday 28 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": "1975-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-04-28", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Monday 28 April. Caturthī runs from 17:55 on Mon 28 Apr to 17:25 on Tue 29 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-04-28", "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/1975/ekadashi?on=1975-05-07", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2852, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-05-06T03:04:25+03:30", "utc": "1975-05-05T23:34:25Z", "ms": 168564864869.28662 }, "end": { "local": "1975-05-07T05:20:58+03:30", "utc": "1975-05-07T01:50:58Z", "ms": 168659457887.26877 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-06T03:04:25+03:30", "utc": "1975-05-05T23:34:25Z", "ms": 168564864869.28662 }, "end": { "local": "1975-05-07T05:20:58+03:30", "utc": "1975-05-07T01:50:58Z", "ms": 168659457887.26877 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-05-06", "window": { "start": { "local": "1975-05-06T04:34:27+03:30", "utc": "1975-05-06T01:04:27Z", "ms": 168570266526.86664 }, "end": { "local": "1975-05-06T04:34:27+03:30", "utc": "1975-05-06T01:04:27Z", "ms": 168570266526.86664 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-05-07", "window": { "start": { "local": "1975-05-07T04:33:26+03:30", "utc": "1975-05-07T01:03:26Z", "ms": 168656605895.03485 }, "end": { "local": "1975-05-07T04:33:26+03:30", "utc": "1975-05-07T01:03:26Z", "ms": 168656605895.03485 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:04 on Tue 6 May to 05:21 on Wed 7 May.", "fact": "1975-05-05T23:34:25Z → 1975-05-07T01:50:58Z" }, { "step": "kaala", "text": "Sunrise is at 04:34 on the 6th and 04:33 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 6th and is on the 7th.", "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 2852 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Mashhad, 1975: Wednesday 7 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": "1975-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-07", "confidence": "determinate" } ], "quote": "In Mashhad, Varūthinī Ekādaśī 1975 falls on Wednesday 7 May. Ekādaśī runs from 03:04 on Tue 6 May to 05:21 on Wed 7 May and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-05-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-05-08", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34287, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-05-08T07:19:37+03:30", "utc": "1975-05-08T03:49:37Z", "ms": 168752977174.52213 }, "end": { "local": "1975-05-09T08:53:36+03:30", "utc": "1975-05-09T05:23:36Z", "ms": 168845016485.3994 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-08T07:19:37+03:30", "utc": "1975-05-08T03:49:37Z", "ms": 168752977174.52213 }, "end": { "local": "1975-05-09T08:53:36+03:30", "utc": "1975-05-09T05:23:36Z", "ms": 168845016485.3994 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-05-08", "window": { "start": { "local": "1975-05-08T18:24:13+03:30", "utc": "1975-05-08T14:54:13Z", "ms": 168792852827.94363 }, "end": { "local": "1975-05-08T19:45:11+03:30", "utc": "1975-05-08T16:15:11Z", "ms": 168797710911.7549 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1975-05-09", "window": { "start": { "local": "1975-05-09T18:25:04+03:30", "utc": "1975-05-09T14:55:04Z", "ms": 168879303814.1416 }, "end": { "local": "1975-05-09T19:45:48+03:30", "utc": "1975-05-09T16:15:48Z", "ms": 168884147531.99252 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:20 on Thu 8 May to 08:54 on Fri 9 May.", "fact": "1975-05-08T03:49:37Z → 1975-05-09T05:23:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:24–19:45 on the 8th, 18:25–19:46 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 81 of 81 minutes on the 8th and 0 of 81 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 34287 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Thursday 8 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": "1975-05-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-08", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Thursday 8 May. Trayodaśī runs from 07:20 on Thu 8 May to 08:54 on Fri 9 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-05-08", "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/1975/shivaratri?on=1975-05-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32506, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-05-09T08:53:36+03:30", "utc": "1975-05-09T05:23:36Z", "ms": 168845016485.3994 }, "end": { "local": "1975-05-10T09:59:08+03:30", "utc": "1975-05-10T06:29:08Z", "ms": 168935347568.6172 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-09T08:53:36+03:30", "utc": "1975-05-09T05:23:36Z", "ms": 168845016485.3994 }, "end": { "local": "1975-05-10T09:59:08+03:30", "utc": "1975-05-10T06:29:08Z", "ms": 168935347568.6172 } }, "kaala": "nishita", "days": [ { "local_date": "1975-05-08", "window": { "start": { "local": "1975-05-08T23:03:51+03:30", "utc": "1975-05-08T19:33:51Z", "ms": 168809630642.2359 }, "end": { "local": "1975-05-08T23:51:51+03:30", "utc": "1975-05-08T20:21:51Z", "ms": 168812510642.2359 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-05-09", "window": { "start": { "local": "1975-05-09T23:03:48+03:30", "utc": "1975-05-09T19:33:48Z", "ms": 168896027756.08252 }, "end": { "local": "1975-05-09T23:51:48+03:30", "utc": "1975-05-09T20:21:48Z", "ms": 168898907756.08252 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:54 on Fri 9 May to 09:59 on Sat 10 May.", "fact": "1975-05-09T05:23:36Z → 1975-05-10T06:29:08Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:04–23:52 on the 8th, 23:04–23:52 on the 9th.", "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 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32506 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Friday 9 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": "1975-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-09", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Friday 9 May. Caturdaśī runs from 08:54 on Fri 9 May to 09:59 on Sat 10 May and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-05-09", "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/1975/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29290, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-05-13T10:20:16+03:30", "utc": "1975-05-13T06:50:16Z", "ms": 169195815950.73932 }, "end": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-13T10:20:16+03:30", "utc": "1975-05-13T06:50:16Z", "ms": 169195815950.73932 }, "end": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-05-13", "window": { "start": { "local": "1975-05-13T18:28:26+03:30", "utc": "1975-05-13T14:58:26Z", "ms": 169225105748.7351 }, "end": { "local": "1975-05-13T19:48:14+03:30", "utc": "1975-05-13T16:18:14Z", "ms": 169229894081.66153 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "1975-05-14", "window": { "start": { "local": "1975-05-14T18:29:16+03:30", "utc": "1975-05-14T14:59:16Z", "ms": 169311555586.3656 }, "end": { "local": "1975-05-14T19:48:51+03:30", "utc": "1975-05-14T16:18:51Z", "ms": 169316330625.51453 } }, "covered_min": 0, "window_min": 80, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:20 on Tue 13 May to 09:34 on Wed 14 May.", "fact": "1975-05-13T06:50:16Z → 1975-05-14T06:03:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:28–19:48 on the 13th, 18:29–19:49 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 80 of 80 minutes on the 13th and 0 of 80 on the 14th.", "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 29290 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Mashhad, 1975: Tuesday 13 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-13", "confidence": "determinate" } ], "quote": "In Mashhad, Paraśurāma Jayantī 1975 falls on Tuesday 13 May. Tṛtīyā runs from 10:20 on Tue 13 May to 09:34 on Wed 14 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1565, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-05-13T10:20:16+03:30", "utc": "1975-05-13T06:50:16Z", "ms": 169195815950.73932 }, "end": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-13T10:20:16+03:30", "utc": "1975-05-13T06:50:16Z", "ms": 169195815950.73932 }, "end": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 } }, "kaala": "purvahna", "days": [ { "local_date": "1975-05-13", "window": { "start": { "local": "1975-05-13T04:27:50+03:30", "utc": "1975-05-13T00:57:50Z", "ms": 169174669530.17813 }, "end": { "local": "1975-05-13T09:08:02+03:30", "utc": "1975-05-13T05:38:02Z", "ms": 169191481603.03046 } }, "covered_min": 0, "window_min": 280, "qualifies": false }, { "local_date": "1975-05-14", "window": { "start": { "local": "1975-05-14T04:26:58+03:30", "utc": "1975-05-14T00:56:58Z", "ms": 169261018245.68335 }, "end": { "local": "1975-05-14T09:07:44+03:30", "utc": "1975-05-14T05:37:44Z", "ms": 169277864025.91077 } }, "covered_min": 281, "window_min": 281, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:20 on Tue 13 May to 09:34 on Wed 14 May.", "fact": "1975-05-13T06:50:16Z → 1975-05-14T06:03:49Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 04:28–09:08 on the 13th, 04:27–09:08 on the 14th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 0 of 280 minutes on the 13th and 281 of 281 on the 14th.", "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 1565 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Mashhad, 1975: Wednesday 14 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-14", "confidence": "determinate" } ], "quote": "In Mashhad, Akṣaya Tṛtīyā 1975 falls on Wednesday 14 May. Tṛtīyā runs from 10:20 on Tue 13 May to 09:34 on Wed 14 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-05-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5418, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 }, "end": { "local": "1975-05-15T08:24:31+03:30", "utc": "1975-05-15T04:54:31Z", "ms": 169361670888.8994 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-14T09:33:49+03:30", "utc": "1975-05-14T06:03:49Z", "ms": 169279429340.5131 }, "end": { "local": "1975-05-15T08:24:31+03:30", "utc": "1975-05-15T04:54:31Z", "ms": 169361670888.8994 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-14", "window": { "start": { "local": "1975-05-14T11:04:07+03:30", "utc": "1975-05-14T07:34:07Z", "ms": 169284846916.02448 }, "end": { "local": "1975-05-14T11:52:07+03:30", "utc": "1975-05-14T08:22:07Z", "ms": 169287726916.02448 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-05-15", "window": { "start": { "local": "1975-05-15T11:04:07+03:30", "utc": "1975-05-15T07:34:07Z", "ms": 169371246742.01712 }, "end": { "local": "1975-05-15T11:52:07+03:30", "utc": "1975-05-15T08:22:07Z", "ms": 169374126742.01712 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:34 on Wed 14 May to 08:25 on Thu 15 May.", "fact": "1975-05-14T06:03:49Z → 1975-05-15T04:54:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 14th, 11:04–11:52 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 5418 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Wednesday 14 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": "1975-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-14", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Wednesday 14 May. Caturthī runs from 09:34 on Wed 14 May to 08:25 on Thu 15 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-05-14", "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/1975/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9576, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-05-15T08:24:31+03:30", "utc": "1975-05-15T04:54:31Z", "ms": 169361670888.8994 }, "end": { "local": "1975-05-16T06:54:52+03:30", "utc": "1975-05-16T03:24:52Z", "ms": 169442692476.1587 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-15T08:24:31+03:30", "utc": "1975-05-15T04:54:31Z", "ms": 169361670888.8994 }, "end": { "local": "1975-05-16T06:54:52+03:30", "utc": "1975-05-16T03:24:52Z", "ms": 169442692476.1587 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-15", "window": { "start": { "local": "1975-05-15T11:04:07+03:30", "utc": "1975-05-15T07:34:07Z", "ms": 169371246742.01712 }, "end": { "local": "1975-05-15T11:52:07+03:30", "utc": "1975-05-15T08:22:07Z", "ms": 169374126742.01712 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-05-16", "window": { "start": { "local": "1975-05-16T11:04:07+03:30", "utc": "1975-05-16T07:34:07Z", "ms": 169457647111.18896 }, "end": { "local": "1975-05-16T11:52:07+03:30", "utc": "1975-05-16T08:22:07Z", "ms": 169460527111.18896 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:25 on Thu 15 May to 06:55 on Fri 16 May.", "fact": "1975-05-15T04:54:31Z → 1975-05-16T03:24:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 15th, 11:04–11:52 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9576 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Mashhad, 1975: Thursday 15 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-15", "confidence": "determinate" } ], "quote": "In Mashhad, Śaṅkara Jayantī 1975 falls on Thursday 15 May. Pañcamī runs from 08:25 on Thu 15 May to 06:55 on Fri 16 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21400, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-05-17T05:07:28+03:30", "utc": "1975-05-17T01:37:28Z", "ms": 169522647821.7839 }, "end": { "local": "1975-05-18T03:04:58+03:30", "utc": "1975-05-17T23:34:58Z", "ms": 169601697773.5844 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-17T05:07:28+03:30", "utc": "1975-05-17T01:37:28Z", "ms": 169522647821.7839 }, "end": { "local": "1975-05-18T03:04:58+03:30", "utc": "1975-05-17T23:34:58Z", "ms": 169601697773.5844 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-17", "window": { "start": { "local": "1975-05-17T11:04:08+03:30", "utc": "1975-05-17T07:34:08Z", "ms": 169544048017.28198 }, "end": { "local": "1975-05-17T11:52:08+03:30", "utc": "1975-05-17T08:22:08Z", "ms": 169546928017.28198 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-05-18", "window": { "start": { "local": "1975-05-18T11:04:09+03:30", "utc": "1975-05-18T07:34:09Z", "ms": 169630449454.2798 }, "end": { "local": "1975-05-18T11:52:09+03:30", "utc": "1975-05-18T08:22:09Z", "ms": 169633329454.2798 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:07 on Sat 17 May to 03:05 on Sun 18 May.", "fact": "1975-05-17T01:37:28Z → 1975-05-17T23:34:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 17th, 11:04–11:52 on the 18th.", "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 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: purvaviddha → only-day · margin 21400 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Mashhad, 1975: Saturday 17 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-17", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṅgotpatti (Ganga Saptami) 1975 falls on Saturday 17 May. Saptamī runs from 05:07 on Sat 17 May to 03:05 on Sun 18 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-05-21", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30185, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-05-20T19:58:35+03:30", "utc": "1975-05-20T16:28:35Z", "ms": 169835315397.5107 }, "end": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-20T19:58:35+03:30", "utc": "1975-05-20T16:28:35Z", "ms": 169835315397.5107 }, "end": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-05-21", "window": { "start": { "local": "1975-05-21T04:21:40+03:30", "utc": "1975-05-21T00:51:40Z", "ms": 169865500077.9172 }, "end": { "local": "1975-05-21T04:21:40+03:30", "utc": "1975-05-21T00:51:40Z", "ms": 169865500077.9172 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-05-22", "window": { "start": { "local": "1975-05-22T04:21:01+03:30", "utc": "1975-05-22T00:51:01Z", "ms": 169951860695.22406 }, "end": { "local": "1975-05-22T04:21:01+03:30", "utc": "1975-05-22T00:51:01Z", "ms": 169951860695.22406 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:59 on Tue 20 May to 17:30 on Wed 21 May.", "fact": "1975-05-20T16:28:35Z → 1975-05-21T13:59:55Z" }, { "step": "kaala", "text": "Sunrise is at 04:22 on the 21st and 04:21 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30185 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Mashhad, 1975: Wednesday 21 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": "1975-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-21", "confidence": "determinate" } ], "quote": "In Mashhad, Mohinī Ekādaśī 1975 falls on Wednesday 21 May. Ekādaśī runs from 19:59 on Tue 20 May to 17:30 on Wed 21 May and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-05-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11620, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 }, "end": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 }, "end": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-21", "window": { "start": { "local": "1975-05-21T11:04:17+03:30", "utc": "1975-05-21T07:34:17Z", "ms": 169889656897.35138 }, "end": { "local": "1975-05-21T11:52:17+03:30", "utc": "1975-05-21T08:22:17Z", "ms": 169892536897.35138 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-05-22", "window": { "start": { "local": "1975-05-22T11:04:20+03:30", "utc": "1975-05-22T07:34:20Z", "ms": 169976060406.95538 }, "end": { "local": "1975-05-22T11:52:20+03:30", "utc": "1975-05-22T08:22:20Z", "ms": 169978940406.95538 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:30 on Wed 21 May to 15:06 on Thu 22 May.", "fact": "1975-05-21T13:59:55Z → 1975-05-22T11:36:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 21st, 11:04–11:52 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11620 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Mashhad, 1975: Thursday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-22", "confidence": "determinate" } ], "quote": "In Mashhad, Paraśurāma Dvādaśī 1975 falls on Thursday 22 May. Dvādaśī runs from 17:30 on Wed 21 May to 15:06 on Thu 22 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11620, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 }, "end": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-21T17:29:55+03:30", "utc": "1975-05-21T13:59:55Z", "ms": 169912795464.4163 }, "end": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-21", "window": { "start": { "local": "1975-05-21T11:04:17+03:30", "utc": "1975-05-21T07:34:17Z", "ms": 169889656897.35138 }, "end": { "local": "1975-05-21T11:52:17+03:30", "utc": "1975-05-21T08:22:17Z", "ms": 169892536897.35138 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-05-22", "window": { "start": { "local": "1975-05-22T11:04:20+03:30", "utc": "1975-05-22T07:34:20Z", "ms": 169976060406.95538 }, "end": { "local": "1975-05-22T11:52:20+03:30", "utc": "1975-05-22T08:22:20Z", "ms": 169978940406.95538 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:30 on Wed 21 May to 15:06 on Thu 22 May.", "fact": "1975-05-21T13:59:55Z → 1975-05-22T11:36:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 21st, 11:04–11:52 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11620 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Mashhad, 1975: Thursday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-22", "confidence": "determinate" } ], "quote": "In Mashhad, Rukmiṇī Dvādaśī 1975 falls on Thursday 22 May. Dvādaśī runs from 17:30 on Wed 21 May to 15:06 on Thu 22 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-05-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12580, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 }, "end": { "local": "1975-05-23T12:52:28+03:30", "utc": "1975-05-23T09:22:28Z", "ms": 170068948283.66785 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-22T15:06:00+03:30", "utc": "1975-05-22T11:36:00Z", "ms": 169990560456.18976 }, "end": { "local": "1975-05-23T12:52:28+03:30", "utc": "1975-05-23T09:22:28Z", "ms": 170068948283.66785 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-05-22", "window": { "start": { "local": "1975-05-22T18:35:40+03:30", "utc": "1975-05-22T15:05:40Z", "ms": 170003140118.68668 }, "end": { "local": "1975-05-22T19:53:38+03:30", "utc": "1975-05-22T16:23:38Z", "ms": 170007817821.53555 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1975-05-23", "window": { "start": { "local": "1975-05-23T18:36:26+03:30", "utc": "1975-05-23T15:06:26Z", "ms": 170089585957.54184 }, "end": { "local": "1975-05-23T19:54:13+03:30", "utc": "1975-05-23T16:24:13Z", "ms": 170094252720.8254 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:06 on Thu 22 May to 12:52 on Fri 23 May.", "fact": "1975-05-22T11:36:00Z → 1975-05-23T09:22:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–19:54 on the 22nd, 18:36–19:54 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 78 of 78 minutes on the 22nd and 0 of 78 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12580 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Thursday 22 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": "1975-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-22", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Thursday 22 May. Trayodaśī runs from 15:06 on Thu 22 May to 12:52 on Fri 23 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-05-22", "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/1975/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20638, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-05-23T12:52:28+03:30", "utc": "1975-05-23T09:22:28Z", "ms": 170068948283.66785 }, "end": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-23T12:52:28+03:30", "utc": "1975-05-23T09:22:28Z", "ms": 170068948283.66785 }, "end": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-05-23", "window": { "start": { "local": "1975-05-23T18:36:26+03:30", "utc": "1975-05-23T15:06:26Z", "ms": 170089585957.54184 }, "end": { "local": "1975-05-23T19:54:13+03:30", "utc": "1975-05-23T16:24:13Z", "ms": 170094252720.8254 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1975-05-24", "window": { "start": { "local": "1975-05-24T18:37:11+03:30", "utc": "1975-05-24T15:07:11Z", "ms": 170176031204.82892 }, "end": { "local": "1975-05-24T19:54:47+03:30", "utc": "1975-05-24T16:24:47Z", "ms": 170180687322.97748 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:52 on Fri 23 May to 10:55 on Sat 24 May.", "fact": "1975-05-23T09:22:28Z → 1975-05-24T07:25:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–19:54 on the 23rd, 18:37–19:55 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 23rd and 0 of 78 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20638 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Mashhad, 1975: Friday 23 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-23", "confidence": "determinate" } ], "quote": "In Mashhad, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1975 falls on Friday 23 May. Caturdaśī runs from 12:52 on Fri 23 May to 10:55 on Sat 24 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 551, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 }, "end": { "local": "1975-05-25T09:20:35+03:30", "utc": "1975-05-25T05:50:35Z", "ms": 170229034629.1198 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 }, "end": { "local": "1975-05-25T09:20:35+03:30", "utc": "1975-05-25T05:50:35Z", "ms": 170229034629.1198 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-24", "window": { "start": { "local": "1975-05-24T11:04:29+03:30", "utc": "1975-05-24T07:34:29Z", "ms": 170148868943.49878 }, "end": { "local": "1975-05-24T11:52:29+03:30", "utc": "1975-05-24T08:22:29Z", "ms": 170151748943.49878 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-05-25", "window": { "start": { "local": "1975-05-25T11:04:34+03:30", "utc": "1975-05-25T07:34:34Z", "ms": 170235273961.14154 }, "end": { "local": "1975-05-25T11:52:34+03:30", "utc": "1975-05-25T08:22:34Z", "ms": 170238153961.14154 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:55 on Sat 24 May to 09:21 on Sun 25 May.", "fact": "1975-05-24T07:25:18Z → 1975-05-25T05:50:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 24th, 11:05–11:53 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 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: unstated → only-day · margin 551 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Mashhad, 1975: Saturday 24 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "buddha-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-24", "confidence": "determinate" } ], "quote": "In Mashhad, Buddha Pūrṇimā 1975 falls on Saturday 24 May. Pūrṇimā runs from 10:55 on Sat 24 May to 09:21 on Sun 25 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 551, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 }, "end": { "local": "1975-05-25T09:20:35+03:30", "utc": "1975-05-25T05:50:35Z", "ms": 170229034629.1198 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-24T10:55:18+03:30", "utc": "1975-05-24T07:25:18Z", "ms": 170148318099.99646 }, "end": { "local": "1975-05-25T09:20:35+03:30", "utc": "1975-05-25T05:50:35Z", "ms": 170229034629.1198 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-05-24", "window": { "start": { "local": "1975-05-24T11:04:29+03:30", "utc": "1975-05-24T07:34:29Z", "ms": 170148868943.49878 }, "end": { "local": "1975-05-24T11:52:29+03:30", "utc": "1975-05-24T08:22:29Z", "ms": 170151748943.49878 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-05-25", "window": { "start": { "local": "1975-05-25T11:04:34+03:30", "utc": "1975-05-25T07:34:34Z", "ms": 170235273961.14154 }, "end": { "local": "1975-05-25T11:52:34+03:30", "utc": "1975-05-25T08:22:34Z", "ms": 170238153961.14154 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:55 on Sat 24 May to 09:21 on Sun 25 May.", "fact": "1975-05-24T07:25:18Z → 1975-05-25T05:50:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 24th, 11:05–11:53 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 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 551 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Mashhad, 1975: Saturday 24 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sampat-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-24", "confidence": "determinate" } ], "quote": "In Mashhad, Sampat Gaurī Vrata 1975 falls on Saturday 24 May. Pūrṇimā runs from 10:55 on Sat 24 May to 09:21 on Sun 25 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-05-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39419, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-05-28T07:44:18+03:30", "utc": "1975-05-28T04:14:18Z", "ms": 170482458198.76956 }, "end": { "local": "1975-05-29T08:25:46+03:30", "utc": "1975-05-29T04:55:46Z", "ms": 170571346178.40372 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-05-28T07:44:18+03:30", "utc": "1975-05-28T04:14:18Z", "ms": 170482458198.76956 }, "end": { "local": "1975-05-29T08:25:46+03:30", "utc": "1975-05-29T04:55:46Z", "ms": 170571346178.40372 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-05-27", "window": { "start": { "local": "1975-05-27T20:45:14+03:30", "utc": "1975-05-27T17:15:14Z", "ms": 170442913528.63818 }, "end": { "local": "1975-05-27T20:45:14+03:30", "utc": "1975-05-27T17:15:14Z", "ms": 170442913528.63818 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-05-28", "window": { "start": { "local": "1975-05-28T21:28:47+03:30", "utc": "1975-05-28T17:58:47Z", "ms": 170531927065.9646 }, "end": { "local": "1975-05-28T21:28:47+03:30", "utc": "1975-05-28T17:58:47Z", "ms": 170531927065.9646 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:44 on Wed 28 May to 08:26 on Thu 29 May.", "fact": "1975-05-28T04:14:18Z → 1975-05-29T04:55:46Z" }, { "step": "kaala", "text": "Moonrise is at 20:45 on the 27th and 21:29 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 39419 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Wednesday 28 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": "1975-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-05-28", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Wednesday 28 May. Caturthī runs from 07:44 on Wed 28 May to 08:26 on Thu 29 May and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-05-28", "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/1975/ekadashi?on=1975-06-05", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22598, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-06-04T20:22:38+03:30", "utc": "1975-06-04T16:52:38Z", "ms": 171132758174.71786 }, "end": { "local": "1975-06-05T21:57:50+03:30", "utc": "1975-06-05T18:27:50Z", "ms": 171224870435.75854 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-04T20:22:38+03:30", "utc": "1975-06-04T16:52:38Z", "ms": 171132758174.71786 }, "end": { "local": "1975-06-05T21:57:50+03:30", "utc": "1975-06-05T18:27:50Z", "ms": 171224870435.75854 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-06-05", "window": { "start": { "local": "1975-06-05T04:14:43+03:30", "utc": "1975-06-05T00:44:43Z", "ms": 171161082700.42902 }, "end": { "local": "1975-06-05T04:14:43+03:30", "utc": "1975-06-05T00:44:43Z", "ms": 171161082700.42902 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-06-06", "window": { "start": { "local": "1975-06-06T04:14:29+03:30", "utc": "1975-06-06T00:44:29Z", "ms": 171247468560.54926 }, "end": { "local": "1975-06-06T04:14:29+03:30", "utc": "1975-06-06T00:44:29Z", "ms": 171247468560.54926 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:23 on Wed 4 Jun to 21:58 on Thu 5 Jun.", "fact": "1975-06-04T16:52:38Z → 1975-06-05T18:27:50Z" }, { "step": "kaala", "text": "Sunrise is at 04:15 on the 5th and 04:14 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 22598 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Mashhad, 1975: Thursday 5 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": "1975-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-05", "confidence": "determinate" } ], "quote": "In Mashhad, Aparā Ekādaśī 1975 falls on Thursday 5 June. Ekādaśī runs from 20:23 on Wed 4 Jun to 21:58 on Thu 5 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-06-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10650, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-06-06T22:59:08+03:30", "utc": "1975-06-06T19:29:08Z", "ms": 171314947738.79135 }, "end": { "local": "1975-06-07T23:22:49+03:30", "utc": "1975-06-07T19:52:49Z", "ms": 171402769020.6383 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-06T22:59:08+03:30", "utc": "1975-06-06T19:29:08Z", "ms": 171314947738.79135 }, "end": { "local": "1975-06-07T23:22:49+03:30", "utc": "1975-06-07T19:52:49Z", "ms": 171402769020.6383 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-06-06", "window": { "start": { "local": "1975-06-06T18:45:51+03:30", "utc": "1975-06-06T15:15:51Z", "ms": 171299750804.77737 }, "end": { "local": "1975-06-06T20:01:38+03:30", "utc": "1975-06-06T16:31:38Z", "ms": 171304298185.16974 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "1975-06-07", "window": { "start": { "local": "1975-06-07T18:46:24+03:30", "utc": "1975-06-07T15:16:24Z", "ms": 171386184234.3087 }, "end": { "local": "1975-06-07T20:02:06+03:30", "utc": "1975-06-07T16:32:06Z", "ms": 171390725734.6845 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:59 on Fri 6 Jun to 23:23 on Sat 7 Jun.", "fact": "1975-06-06T19:29:08Z → 1975-06-07T19:52:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:46–20:02 on the 6th, 18:46–20:02 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 6th and 76 of 76 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 10650 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Saturday 7 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": "1975-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-07", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Saturday 7 June. Trayodaśī runs from 22:59 on Fri 6 Jun to 23:23 on Sat 7 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-06-07", "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/1975/shivaratri?on=1975-06-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-07", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 132, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-06-07T23:22:49+03:30", "utc": "1975-06-07T19:52:49Z", "ms": 171402769020.6383 }, "end": { "local": "1975-06-08T23:08:38+03:30", "utc": "1975-06-08T19:38:38Z", "ms": 171488318419.3947 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-07T23:22:49+03:30", "utc": "1975-06-07T19:52:49Z", "ms": 171402769020.6383 }, "end": { "local": "1975-06-08T23:08:38+03:30", "utc": "1975-06-08T19:38:38Z", "ms": 171488318419.3947 } }, "kaala": "nishita", "days": [ { "local_date": "1975-06-07", "window": { "start": { "local": "1975-06-07T23:06:15+03:30", "utc": "1975-06-07T19:36:15Z", "ms": 171401774860.71802 }, "end": { "local": "1975-06-07T23:54:15+03:30", "utc": "1975-06-07T20:24:15Z", "ms": 171404654860.71802 } }, "covered_min": 31, "window_min": 48, "qualifies": true }, { "local_date": "1975-06-08", "window": { "start": { "local": "1975-06-08T23:06:27+03:30", "utc": "1975-06-08T19:36:27Z", "ms": 171488186539.8423 }, "end": { "local": "1975-06-08T23:54:27+03:30", "utc": "1975-06-08T20:24:27Z", "ms": 171491066539.8423 } }, "covered_min": 2, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:23 on Sat 7 Jun to 23:09 on Sun 8 Jun.", "fact": "1975-06-07T19:52:49Z → 1975-06-08T19:38:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:06–23:54 on the 7th, 23:06–23:54 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 31 of 48 minutes on the 7th and 2 of 48 on the 8th.", "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 132 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Saturday 7 June.", "fact": "confidence: boundary (margin, 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": "1975-06-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-07", "confidence": "boundary" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Saturday 7 June. Caturdaśī runs from 23:23 on Sat 7 Jun to 23:09 on Sun 8 Jun and covers 31 of 48 minutes of niśītha that night. It also reaches the next night for 2 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 12 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-06-07", "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/1975/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18773, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-06-11T19:12:55+03:30", "utc": "1975-06-11T15:42:55Z", "ms": 171733375228.73224 }, "end": { "local": "1975-06-12T17:08:10+03:30", "utc": "1975-06-12T13:38:10Z", "ms": 171812289714.99023 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-11T19:12:55+03:30", "utc": "1975-06-11T15:42:55Z", "ms": 171733375228.73224 }, "end": { "local": "1975-06-12T17:08:10+03:30", "utc": "1975-06-12T13:38:10Z", "ms": 171812289714.99023 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-06-11", "window": { "start": { "local": "1975-06-11T11:07:05+03:30", "utc": "1975-06-11T07:37:05Z", "ms": 171704225041.064 }, "end": { "local": "1975-06-11T11:55:05+03:30", "utc": "1975-06-11T08:25:05Z", "ms": 171707105041.064 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-06-12", "window": { "start": { "local": "1975-06-12T11:07:17+03:30", "utc": "1975-06-12T07:37:17Z", "ms": 171790636824.8438 }, "end": { "local": "1975-06-12T11:55:17+03:30", "utc": "1975-06-12T08:25:17Z", "ms": 171793516824.8438 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:13 on Wed 11 Jun to 17:08 on Thu 12 Jun.", "fact": "1975-06-11T15:42:55Z → 1975-06-12T13:38:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 11th, 11:07–11:55 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18773 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Mashhad, 1975: Thursday 12 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": "1975-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-12", "confidence": "determinate" } ], "quote": "In Mashhad, Rambhā Tṛtīyā 1975 falls on Thursday 12 June. Tṛtīyā runs from 19:13 on Wed 11 Jun to 17:08 on Thu 12 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-06-13", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10508, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-06-12T17:08:10+03:30", "utc": "1975-06-12T13:38:10Z", "ms": 171812289714.99023 }, "end": { "local": "1975-06-13T14:50:37+03:30", "utc": "1975-06-13T11:20:37Z", "ms": 171890437043.3917 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-12T17:08:10+03:30", "utc": "1975-06-12T13:38:10Z", "ms": 171812289714.99023 }, "end": { "local": "1975-06-13T14:50:37+03:30", "utc": "1975-06-13T11:20:37Z", "ms": 171890437043.3917 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-06-12", "window": { "start": { "local": "1975-06-12T11:07:17+03:30", "utc": "1975-06-12T07:37:17Z", "ms": 171790636824.8438 }, "end": { "local": "1975-06-12T11:55:17+03:30", "utc": "1975-06-12T08:25:17Z", "ms": 171793516824.8438 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-06-13", "window": { "start": { "local": "1975-06-13T11:07:29+03:30", "utc": "1975-06-13T07:37:29Z", "ms": 171877048785.24667 }, "end": { "local": "1975-06-13T11:55:29+03:30", "utc": "1975-06-13T08:25:29Z", "ms": 171879928785.24667 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:08 on Thu 12 Jun to 14:51 on Fri 13 Jun.", "fact": "1975-06-12T13:38:10Z → 1975-06-13T11:20:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 12th, 11:07–11:55 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "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 10508 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Friday 13 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": "1975-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-13", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Friday 13 June. Caturthī runs from 17:08 on Thu 12 Jun to 14:51 on Fri 13 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1832, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-06-14T12:26:13+03:30", "utc": "1975-06-14T08:56:13Z", "ms": 171968172662.12775 }, "end": { "local": "1975-06-15T10:00:16+03:30", "utc": "1975-06-15T06:30:16Z", "ms": 172045816226.6134 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-14T12:26:13+03:30", "utc": "1975-06-14T08:56:13Z", "ms": 171968172662.12775 }, "end": { "local": "1975-06-15T10:00:16+03:30", "utc": "1975-06-15T06:30:16Z", "ms": 172045816226.6134 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-06-14", "window": { "start": { "local": "1975-06-14T11:07:41+03:30", "utc": "1975-06-14T07:37:41Z", "ms": 171963460896.20355 }, "end": { "local": "1975-06-14T11:55:41+03:30", "utc": "1975-06-14T08:25:41Z", "ms": 171966340896.20355 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-06-15", "window": { "start": { "local": "1975-06-15T11:07:53+03:30", "utc": "1975-06-15T07:37:53Z", "ms": 172049873132.3971 }, "end": { "local": "1975-06-15T11:55:53+03:30", "utc": "1975-06-15T08:25:53Z", "ms": 172052753132.3971 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 12:26 on Sat 14 Jun to 10:00 on Sun 15 Jun.", "fact": "1975-06-14T08:56:13Z → 1975-06-15T06:30:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 14th, 11:08–11:56 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 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 1832 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Mashhad, 1975: Sunday 15 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": "1975-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-14", "confidence": "boundary" } ], "quote": "In Mashhad, Araṇya Gaurī Vrata 1975 falls on Sunday 15 June. Ṣaṣṭhī runs from 12:26 on Sat 14 Jun to 10:00 on Sun 15 Jun, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1832, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-06-14T12:26:13+03:30", "utc": "1975-06-14T08:56:13Z", "ms": 171968172662.12775 }, "end": { "local": "1975-06-15T10:00:16+03:30", "utc": "1975-06-15T06:30:16Z", "ms": 172045816226.6134 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-14T12:26:13+03:30", "utc": "1975-06-14T08:56:13Z", "ms": 171968172662.12775 }, "end": { "local": "1975-06-15T10:00:16+03:30", "utc": "1975-06-15T06:30:16Z", "ms": 172045816226.6134 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-06-14", "window": { "start": { "local": "1975-06-14T11:07:41+03:30", "utc": "1975-06-14T07:37:41Z", "ms": 171963460896.20355 }, "end": { "local": "1975-06-14T11:55:41+03:30", "utc": "1975-06-14T08:25:41Z", "ms": 171966340896.20355 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-06-15", "window": { "start": { "local": "1975-06-15T11:07:53+03:30", "utc": "1975-06-15T07:37:53Z", "ms": 172049873132.3971 }, "end": { "local": "1975-06-15T11:55:53+03:30", "utc": "1975-06-15T08:25:53Z", "ms": 172052753132.3971 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 12:26 on Sat 14 Jun to 10:00 on Sun 15 Jun.", "fact": "1975-06-14T08:56:13Z → 1975-06-15T06:30:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 14th, 11:08–11:56 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 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 1832 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Mashhad, 1975: Sunday 15 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": "1975-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-14", "confidence": "boundary" } ], "quote": "In Mashhad, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1975 falls on Sunday 15 June. Ṣaṣṭhī runs from 12:26 on Sat 14 Jun to 10:00 on Sun 15 Jun, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-06-19", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10342, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-06-19T01:21:37+03:30", "utc": "1975-06-18T21:51:37Z", "ms": 172360297270.51608 }, "end": { "local": "1975-06-19T23:42:49+03:30", "utc": "1975-06-19T20:12:49Z", "ms": 172440769494.53906 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-19T01:21:37+03:30", "utc": "1975-06-18T21:51:37Z", "ms": 172360297270.51608 }, "end": { "local": "1975-06-19T23:42:49+03:30", "utc": "1975-06-19T20:12:49Z", "ms": 172440769494.53906 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-06-19", "window": { "start": { "local": "1975-06-19T04:13:59+03:30", "utc": "1975-06-19T00:43:59Z", "ms": 172370639202.5238 }, "end": { "local": "1975-06-19T04:13:59+03:30", "utc": "1975-06-19T00:43:59Z", "ms": 172370639202.5238 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-06-20", "window": { "start": { "local": "1975-06-20T04:14:08+03:30", "utc": "1975-06-20T00:44:08Z", "ms": 172457048341.1524 }, "end": { "local": "1975-06-20T04:14:08+03:30", "utc": "1975-06-20T00:44:08Z", "ms": 172457048341.1524 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:22 on Thu 19 Jun to 23:43 on Thu 19 Jun.", "fact": "1975-06-18T21:51:37Z → 1975-06-19T20:12:49Z" }, { "step": "kaala", "text": "Sunrise is at 04:14 on the 19th and 04:14 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 10342 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Mashhad, 1975: Thursday 19 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": "1975-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-19", "confidence": "determinate" } ], "quote": "In Mashhad, Nirjalā Ekādaśī 1975 falls on Thursday 19 June. Ekādaśī runs from 01:22 on Thu 19 Jun to 23:43 on Thu 19 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-06-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37451, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-06-19T23:42:49+03:30", "utc": "1975-06-19T20:12:49Z", "ms": 172440769494.53906 }, "end": { "local": "1975-06-20T22:21:06+03:30", "utc": "1975-06-20T18:51:06Z", "ms": 172522266297.42838 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-19T23:42:49+03:30", "utc": "1975-06-19T20:12:49Z", "ms": 172440769494.53906 }, "end": { "local": "1975-06-20T22:21:06+03:30", "utc": "1975-06-20T18:51:06Z", "ms": 172522266297.42838 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-06-19", "window": { "start": { "local": "1975-06-19T11:08:43+03:30", "utc": "1975-06-19T07:38:43Z", "ms": 172395522859.71362 }, "end": { "local": "1975-06-19T11:56:43+03:30", "utc": "1975-06-19T08:26:43Z", "ms": 172398402859.71362 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-06-20", "window": { "start": { "local": "1975-06-20T11:08:55+03:30", "utc": "1975-06-20T07:38:55Z", "ms": 172481935378.71323 }, "end": { "local": "1975-06-20T11:56:55+03:30", "utc": "1975-06-20T08:26:55Z", "ms": 172484815378.71323 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:43 on Thu 19 Jun to 22:21 on Fri 20 Jun.", "fact": "1975-06-19T20:12:49Z → 1975-06-20T18:51:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 19th, 11:09–11:57 on the 20th.", "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 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: purvaviddha → only-day · margin 37451 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Mashhad, 1975: Friday 20 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": "1975-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-20", "confidence": "determinate" } ], "quote": "In Mashhad, Śrī Rāma Dvādaśī 1975 falls on Friday 20 June. Dvādaśī runs from 23:43 on Thu 19 Jun to 22:21 on Fri 20 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-06-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4318, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-06-20T22:21:06+03:30", "utc": "1975-06-20T18:51:06Z", "ms": 172522266297.42838 }, "end": { "local": "1975-06-21T21:18:55+03:30", "utc": "1975-06-21T17:48:55Z", "ms": 172604935213.59317 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-20T22:21:06+03:30", "utc": "1975-06-20T18:51:06Z", "ms": 172522266297.42838 }, "end": { "local": "1975-06-21T21:18:55+03:30", "utc": "1975-06-21T17:48:55Z", "ms": 172604935213.59317 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-06-20", "window": { "start": { "local": "1975-06-20T18:51:42+03:30", "utc": "1975-06-20T15:21:42Z", "ms": 172509702416.27405 }, "end": { "local": "1975-06-20T20:06:43+03:30", "utc": "1975-06-20T16:36:43Z", "ms": 172514203297.3969 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1975-06-21", "window": { "start": { "local": "1975-06-21T18:51:57+03:30", "utc": "1975-06-21T15:21:57Z", "ms": 172596116759.43723 }, "end": { "local": "1975-06-21T20:06:57+03:30", "utc": "1975-06-21T16:36:57Z", "ms": 172600617356.10452 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:21 on Fri 20 Jun to 21:19 on Sat 21 Jun.", "fact": "1975-06-20T18:51:06Z → 1975-06-21T17:48:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:07 on the 20th, 18:52–20:07 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 75 minutes on the 20th and 75 of 75 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 4318 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Saturday 21 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": "1975-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-21", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Saturday 21 June. Trayodaśī runs from 22:21 on Fri 20 Jun to 21:19 on Sat 21 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-06-21", "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/1975/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1010, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-06-22T20:38:59+03:30", "utc": "1975-06-22T17:08:59Z", "ms": 172688939481.93167 }, "end": { "local": "1975-06-23T20:24:12+03:30", "utc": "1975-06-23T16:54:12Z", "ms": 172774451516.16568 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-22T20:38:59+03:30", "utc": "1975-06-22T17:08:59Z", "ms": 172688939481.93167 }, "end": { "local": "1975-06-23T20:24:12+03:30", "utc": "1975-06-23T16:54:12Z", "ms": 172774451516.16568 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-06-22", "window": { "start": { "local": "1975-06-22T18:52:10+03:30", "utc": "1975-06-22T15:22:10Z", "ms": 172682529526.4515 }, "end": { "local": "1975-06-22T20:07:10+03:30", "utc": "1975-06-22T16:37:10Z", "ms": 172687030249.72086 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1975-06-23", "window": { "start": { "local": "1975-06-23T18:52:21+03:30", "utc": "1975-06-23T15:22:21Z", "ms": 172768940698.54996 }, "end": { "local": "1975-06-23T20:07:22+03:30", "utc": "1975-06-23T16:37:22Z", "ms": 172773441959.27487 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 20:39 on Sun 22 Jun to 20:24 on Mon 23 Jun.", "fact": "1975-06-22T17:08:59Z → 1975-06-23T16:54:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:07 on the 22nd, 18:52–20:07 on the 23rd.", "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 75 minutes on the 22nd and 75 of 75 on the 23rd.", "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 1010 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Mashhad, 1975: Monday 23 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-22", "confidence": "determinate" } ], "quote": "In Mashhad, Vaṭa Sāvitrī Vrata 1975 falls on Monday 23 June. Pūrṇimā runs from 20:39 on Sun 22 Jun to 20:24 on Mon 23 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-06-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6822, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-06-26T22:32:57+03:30", "utc": "1975-06-26T19:02:57Z", "ms": 173041377236.89355 }, "end": { "local": "1975-06-28T00:14:07+03:30", "utc": "1975-06-27T20:44:07Z", "ms": 173133847023.87057 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-06-26T22:32:57+03:30", "utc": "1975-06-26T19:02:57Z", "ms": 173041377236.89355 }, "end": { "local": "1975-06-28T00:14:07+03:30", "utc": "1975-06-27T20:44:07Z", "ms": 173133847023.87057 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-06-26", "window": { "start": { "local": "1975-06-26T20:39:15+03:30", "utc": "1975-06-26T17:09:15Z", "ms": 173034554813.94513 }, "end": { "local": "1975-06-26T20:39:15+03:30", "utc": "1975-06-26T17:09:15Z", "ms": 173034554813.94513 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-06-27", "window": { "start": { "local": "1975-06-27T21:11:17+03:30", "utc": "1975-06-27T17:41:17Z", "ms": 173122876846.93967 }, "end": { "local": "1975-06-27T21:11:17+03:30", "utc": "1975-06-27T17:41:17Z", "ms": 173122876846.93967 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:33 on Thu 26 Jun to 00:14 on Sat 28 Jun.", "fact": "1975-06-26T19:02:57Z → 1975-06-27T20:44:07Z" }, { "step": "kaala", "text": "Moonrise is at 20:39 on the 26th and 21:11 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī 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. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6822 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Friday 27 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": "1975-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-06-27", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Friday 27 June. Caturthī runs from 22:33 on Thu 26 Jun to 00:14 on Sat 28 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-06-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/ekadashi?on=1975-07-05", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28435, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-07-04T12:12:44+03:30", "utc": "1975-07-04T08:42:44Z", "ms": 173695363996.78326 }, "end": { "local": "1975-07-05T12:44:18+03:30", "utc": "1975-07-05T09:14:18Z", "ms": 173783658134.52698 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-04T12:12:44+03:30", "utc": "1975-07-04T08:42:44Z", "ms": 173695363996.78326 }, "end": { "local": "1975-07-05T12:44:18+03:30", "utc": "1975-07-05T09:14:18Z", "ms": 173783658134.52698 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-07-04", "window": { "start": { "local": "1975-07-04T04:18:49+03:30", "utc": "1975-07-04T00:48:49Z", "ms": 173666928517.71045 }, "end": { "local": "1975-07-04T04:18:49+03:30", "utc": "1975-07-04T00:48:49Z", "ms": 173666928517.71045 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-07-05", "window": { "start": { "local": "1975-07-05T04:19:18+03:30", "utc": "1975-07-05T00:49:18Z", "ms": 173753358336.67853 }, "end": { "local": "1975-07-05T04:19:18+03:30", "utc": "1975-07-05T00:49:18Z", "ms": 173753358336.67853 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:13 on Fri 4 Jul to 12:44 on Sat 5 Jul.", "fact": "1975-07-04T08:42:44Z → 1975-07-05T09:14:18Z" }, { "step": "kaala", "text": "Sunrise is at 04:19 on the 4th and 04:19 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28435 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Mashhad, 1975: Saturday 5 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": "1975-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-05", "confidence": "determinate" } ], "quote": "In Mashhad, Yoginī Ekādaśī 1975 falls on Saturday 5 July. Ekādaśī runs from 12:13 on Fri 4 Jul to 12:44 on Sat 5 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-07-05", "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/1975/pradosha-vrata?on=1975-07-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22907, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-07-06T12:30:28+03:30", "utc": "1975-07-06T09:00:28Z", "ms": 173869227511.7793 }, "end": { "local": "1975-07-07T11:31:58+03:30", "utc": "1975-07-07T08:01:58Z", "ms": 173952117902.43045 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-06T12:30:28+03:30", "utc": "1975-07-06T09:00:28Z", "ms": 173869227511.7793 }, "end": { "local": "1975-07-07T11:31:58+03:30", "utc": "1975-07-07T08:01:58Z", "ms": 173952117902.43045 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-07-06", "window": { "start": { "local": "1975-07-06T18:52:14+03:30", "utc": "1975-07-06T15:22:14Z", "ms": 173892134076.97446 }, "end": { "local": "1975-07-06T20:07:59+03:30", "utc": "1975-07-06T16:37:59Z", "ms": 173896679044.06024 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "1975-07-07", "window": { "start": { "local": "1975-07-07T18:52:02+03:30", "utc": "1975-07-07T15:22:02Z", "ms": 173978521517.1658 }, "end": { "local": "1975-07-07T20:07:53+03:30", "utc": "1975-07-07T16:37:53Z", "ms": 173983072571.41983 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:30 on Sun 6 Jul to 11:32 on Mon 7 Jul.", "fact": "1975-07-06T09:00:28Z → 1975-07-07T08:01:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:08 on the 6th, 18:52–20:08 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 76 of 76 minutes on the 6th and 0 of 76 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 22907 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Sunday 6 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": "1975-07-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-06", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Sunday 6 July. Trayodaśī runs from 12:30 on Sun 6 Jul to 11:32 on Mon 7 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-07-06", "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/1975/shivaratri?on=1975-07-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35551, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-07-07T11:31:58+03:30", "utc": "1975-07-07T08:01:58Z", "ms": 173952117902.43045 }, "end": { "local": "1975-07-08T09:52:58+03:30", "utc": "1975-07-08T06:22:58Z", "ms": 174032578499.87924 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-07T11:31:58+03:30", "utc": "1975-07-07T08:01:58Z", "ms": 173952117902.43045 }, "end": { "local": "1975-07-08T09:52:58+03:30", "utc": "1975-07-08T06:22:58Z", "ms": 174032578499.87924 } }, "kaala": "nishita", "days": [ { "local_date": "1975-07-06", "window": { "start": { "local": "1975-07-06T23:12:18+03:30", "utc": "1975-07-06T19:42:18Z", "ms": 173907737703.54608 }, "end": { "local": "1975-07-07T00:00:18+03:30", "utc": "1975-07-06T20:30:18Z", "ms": 173910617703.54608 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-07-07", "window": { "start": { "local": "1975-07-07T23:12:28+03:30", "utc": "1975-07-07T19:42:28Z", "ms": 173994147970.61844 }, "end": { "local": "1975-07-08T00:00:28+03:30", "utc": "1975-07-07T20:30:28Z", "ms": 173997027970.61844 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:32 on Mon 7 Jul to 09:53 on Tue 8 Jul.", "fact": "1975-07-07T08:01:58Z → 1975-07-08T06:22:58Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:12–00:00 on the 6th, 23:12–00:00 on the 7th.", "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 6th and 48 of 48 on the 7th.", "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 35551 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Monday 7 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": "1975-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-07", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Monday 7 July. Caturdaśī runs from 11:32 on Mon 7 Jul to 09:53 on Tue 8 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-07-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22263, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1975-07-10T05:01:36+03:30", "utc": "1975-07-10T01:31:36Z", "ms": 174187895854.56958 }, "end": { "local": "1975-07-11T02:06:24+03:30", "utc": "1975-07-10T22:36:24Z", "ms": 174263783695.34183 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-10T05:01:36+03:30", "utc": "1975-07-10T01:31:36Z", "ms": 174187895854.56958 }, "end": { "local": "1975-07-11T02:06:24+03:30", "utc": "1975-07-10T22:36:24Z", "ms": 174263783695.34183 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-07-10", "window": { "start": { "local": "1975-07-10T11:12:38+03:30", "utc": "1975-07-10T07:42:38Z", "ms": 174210158448.31525 }, "end": { "local": "1975-07-10T12:00:38+03:30", "utc": "1975-07-10T08:30:38Z", "ms": 174213038448.31525 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-07-11", "window": { "start": { "local": "1975-07-11T11:12:47+03:30", "utc": "1975-07-11T07:42:47Z", "ms": 174296566647.3198 }, "end": { "local": "1975-07-11T12:00:47+03:30", "utc": "1975-07-11T08:30:47Z", "ms": 174299446647.3198 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 05:02 on Thu 10 Jul to 02:06 on Fri 11 Jul.", "fact": "1975-07-10T01:31:36Z → 1975-07-10T22:36:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 10th, 11:13–12:01 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22263 s" }, { "step": "ruling", "text": "Rathayātrā, Mashhad, 1975: Thursday 10 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": "1975-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-10", "confidence": "determinate" } ], "quote": "In Mashhad, Rathayātrā 1975 falls on Thursday 10 July. Dvitīyā runs from 05:02 on Thu 10 Jul to 02:06 on Fri 11 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-07-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28866, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-07-11T23:03:38+03:30", "utc": "1975-07-11T19:33:38Z", "ms": 174339217632.75787 }, "end": { "local": "1975-07-12T20:02:00+03:30", "utc": "1975-07-12T16:32:00Z", "ms": 174414720401.31772 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-11T23:03:38+03:30", "utc": "1975-07-11T19:33:38Z", "ms": 174339217632.75787 }, "end": { "local": "1975-07-12T20:02:00+03:30", "utc": "1975-07-12T16:32:00Z", "ms": 174414720401.31772 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-07-11", "window": { "start": { "local": "1975-07-11T11:12:47+03:30", "utc": "1975-07-11T07:42:47Z", "ms": 174296566647.3198 }, "end": { "local": "1975-07-11T12:00:47+03:30", "utc": "1975-07-11T08:30:47Z", "ms": 174299446647.3198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-07-12", "window": { "start": { "local": "1975-07-12T11:12:54+03:30", "utc": "1975-07-12T07:42:54Z", "ms": 174382974405.18317 }, "end": { "local": "1975-07-12T12:00:54+03:30", "utc": "1975-07-12T08:30:54Z", "ms": 174385854405.18317 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:04 on Fri 11 Jul to 20:02 on Sat 12 Jul.", "fact": "1975-07-11T19:33:38Z → 1975-07-12T16:32:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 11th, 11:13–12:01 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 28866 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Saturday 12 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": "1975-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-12", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Saturday 12 July. Caturthī runs from 23:04 on Fri 11 Jul to 20:02 on Sat 12 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-07-12", "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/1975/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18501, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-07-12T20:02:00+03:30", "utc": "1975-07-12T16:32:00Z", "ms": 174414720401.31772 }, "end": { "local": "1975-07-13T17:09:23+03:30", "utc": "1975-07-13T13:39:23Z", "ms": 174490763121.20358 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-12T20:02:00+03:30", "utc": "1975-07-12T16:32:00Z", "ms": 174414720401.31772 }, "end": { "local": "1975-07-13T17:09:23+03:30", "utc": "1975-07-13T13:39:23Z", "ms": 174490763121.20358 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-07-12", "window": { "start": { "local": "1975-07-12T11:12:54+03:30", "utc": "1975-07-12T07:42:54Z", "ms": 174382974405.18317 }, "end": { "local": "1975-07-12T12:00:54+03:30", "utc": "1975-07-12T08:30:54Z", "ms": 174385854405.18317 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-07-13", "window": { "start": { "local": "1975-07-13T11:13:02+03:30", "utc": "1975-07-13T07:43:02Z", "ms": 174469381702.00397 }, "end": { "local": "1975-07-13T12:01:02+03:30", "utc": "1975-07-13T08:31:02Z", "ms": 174472261702.00397 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:02 on Sat 12 Jul to 17:09 on Sun 13 Jul.", "fact": "1975-07-12T16:32:00Z → 1975-07-13T13:39:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 12th, 11:13–12:01 on the 13th.", "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 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18501 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Mashhad, 1975: Sunday 13 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": "1975-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-13", "confidence": "determinate" } ], "quote": "In Mashhad, Skanda Pañcamī 1975 falls on Sunday 13 July. Pañcamī runs from 20:02 on Sat 12 Jul to 17:09 on Sun 13 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 886, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-07-14T14:32:22+03:30", "utc": "1975-07-14T11:02:22Z", "ms": 174567742038.57224 }, "end": { "local": "1975-07-15T12:16:01+03:30", "utc": "1975-07-15T08:46:01Z", "ms": 174645960608.38504 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-14T14:32:22+03:30", "utc": "1975-07-14T11:02:22Z", "ms": 174567742038.57224 }, "end": { "local": "1975-07-15T12:16:01+03:30", "utc": "1975-07-15T08:46:01Z", "ms": 174645960608.38504 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-07-14", "window": { "start": { "local": "1975-07-14T11:13:09+03:30", "utc": "1975-07-14T07:43:09Z", "ms": 174555788519.7944 }, "end": { "local": "1975-07-14T12:01:09+03:30", "utc": "1975-07-14T08:31:09Z", "ms": 174558668519.7944 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-07-15", "window": { "start": { "local": "1975-07-15T11:13:15+03:30", "utc": "1975-07-15T07:43:15Z", "ms": 174642194842.6126 }, "end": { "local": "1975-07-15T12:01:15+03:30", "utc": "1975-07-15T08:31:15Z", "ms": 174645074842.6126 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:32 on Mon 14 Jul to 12:16 on Tue 15 Jul.", "fact": "1975-07-14T11:02:22Z → 1975-07-15T08:46:01Z" }, { "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": "Saptamī 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 886 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Mashhad, 1975: Tuesday 15 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": "1975-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-15", "confidence": "determinate" } ], "quote": "In Mashhad, Vivasvat Saptamī 1975 falls on Tuesday 15 July. Saptamī runs from 14:32 on Mon 14 Jul to 12:16 on Tue 15 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-07-19", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10392, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-07-18T07:56:23+03:30", "utc": "1975-07-18T04:26:23Z", "ms": 174889583131.00446 }, "end": { "local": "1975-07-19T07:21:08+03:30", "utc": "1975-07-19T03:51:08Z", "ms": 174973868030.28345 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-18T07:56:23+03:30", "utc": "1975-07-18T04:26:23Z", "ms": 174889583131.00446 }, "end": { "local": "1975-07-19T07:21:08+03:30", "utc": "1975-07-19T03:51:08Z", "ms": 174973868030.28345 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-07-18", "window": { "start": { "local": "1975-07-18T04:27:14+03:30", "utc": "1975-07-18T00:57:14Z", "ms": 174877033888.21005 }, "end": { "local": "1975-07-18T04:27:14+03:30", "utc": "1975-07-18T00:57:14Z", "ms": 174877033888.21005 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-07-19", "window": { "start": { "local": "1975-07-19T04:27:56+03:30", "utc": "1975-07-19T00:57:56Z", "ms": 174963475814.4097 }, "end": { "local": "1975-07-19T04:27:56+03:30", "utc": "1975-07-19T00:57:56Z", "ms": 174963475814.4097 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:56 on Fri 18 Jul to 07:21 on Sat 19 Jul.", "fact": "1975-07-18T04:26:23Z → 1975-07-19T03:51:08Z" }, { "step": "kaala", "text": "Sunrise is at 04:27 on the 18th and 04:28 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10392 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Mashhad, 1975: Saturday 19 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": "1975-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-19", "confidence": "determinate" } ], "quote": "In Mashhad, Hariśayanī Ekādaśī 1975 falls on Saturday 19 July. Ekādaśī runs from 07:56 on Fri 18 Jul to 07:21 on Sat 19 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-07-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-07-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39933, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-07-20T07:10:19+03:30", "utc": "1975-07-20T03:40:19Z", "ms": 175059618530.8116 }, "end": { "local": "1975-07-21T07:23:06+03:30", "utc": "1975-07-21T03:53:06Z", "ms": 175146786261.00952 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-20T07:10:19+03:30", "utc": "1975-07-20T03:40:19Z", "ms": 175059618530.8116 }, "end": { "local": "1975-07-21T07:23:06+03:30", "utc": "1975-07-21T03:53:06Z", "ms": 175146786261.00952 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-07-19", "window": { "start": { "local": "1975-07-19T18:47:14+03:30", "utc": "1975-07-19T15:17:14Z", "ms": 175015034049.82373 }, "end": { "local": "1975-07-19T20:04:45+03:30", "utc": "1975-07-19T16:34:45Z", "ms": 175019685286.19376 } }, "covered_min": 0, "window_min": 78, "qualifies": false }, { "local_date": "1975-07-20", "window": { "start": { "local": "1975-07-20T18:46:39+03:30", "utc": "1975-07-20T15:16:39Z", "ms": 175101398888.23837 }, "end": { "local": "1975-07-20T20:04:21+03:30", "utc": "1975-07-20T16:34:21Z", "ms": 175106060554.0384 } }, "covered_min": 78, "window_min": 78, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:10 on Sun 20 Jul to 07:23 on Mon 21 Jul.", "fact": "1975-07-20T03:40:19Z → 1975-07-21T03:53:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:47–20:05 on the 19th, 18:47–20:04 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 78 minutes on the 19th and 78 of 78 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 39933 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Sunday 20 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": "1975-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-20", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Sunday 20 July. Trayodaśī runs from 07:10 on Sun 20 Jul to 07:23 on Mon 21 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-07-20", "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/1975/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8120, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-07-22", "window": { "start": { "local": "1975-07-22T11:13:44+03:30", "utc": "1975-07-22T07:43:44Z", "ms": 175247024283.75903 }, "end": { "local": "1975-07-22T12:01:44+03:30", "utc": "1975-07-22T08:31:44Z", "ms": 175249904283.75903 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-07-23", "window": { "start": { "local": "1975-07-23T11:13:46+03:30", "utc": "1975-07-23T07:43:46Z", "ms": 175333426278.91818 }, "end": { "local": "1975-07-23T12:01:46+03:30", "utc": "1975-07-23T08:31:46Z", "ms": 175336306278.91818 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul.", "fact": "1975-07-22T04:29:09Z → 1975-07-23T05:28:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 22nd, 11:14–12:02 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8120 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Mashhad, 1975: Tuesday 22 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": "1975-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-22", "confidence": "determinate" } ], "quote": "In Mashhad, Guru Pūrṇimā 1975 falls on Tuesday 22 July. Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24930, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 } }, "kaala": "sayahna", "days": [ { "local_date": "1975-07-22", "window": { "start": { "local": "1975-07-22T15:54:20+03:30", "utc": "1975-07-22T12:24:20Z", "ms": 175263859876.87485 }, "end": { "local": "1975-07-22T18:45:24+03:30", "utc": "1975-07-22T15:15:24Z", "ms": 175274123605.6187 } }, "covered_min": 171, "window_min": 171, "qualifies": true }, { "local_date": "1975-07-23", "window": { "start": { "local": "1975-07-23T15:53:57+03:30", "utc": "1975-07-23T12:23:57Z", "ms": 175350236625.7979 }, "end": { "local": "1975-07-23T18:44:44+03:30", "utc": "1975-07-23T15:14:44Z", "ms": 175360483523.71774 } }, "covered_min": 0, "window_min": 171, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul.", "fact": "1975-07-22T04:29:09Z → 1975-07-23T05:28:27Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:54–18:45 on the 22nd, 15:54–18:45 on the 23rd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 171 of 171 minutes on the 22nd and 0 of 171 on the 23rd.", "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 24930 s" }, { "step": "ruling", "text": "Kokilā Vrata, Mashhad, 1975: Tuesday 22 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": "1975-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-22", "confidence": "determinate" } ], "quote": "In Mashhad, Kokilā Vrata 1975 falls on Tuesday 22 July. Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35177, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-07-22", "window": { "start": { "local": "1975-07-22T18:45:24+03:30", "utc": "1975-07-22T15:15:24Z", "ms": 175274123605.6187 }, "end": { "local": "1975-07-22T20:03:27+03:30", "utc": "1975-07-22T16:33:27Z", "ms": 175278806996.08536 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1975-07-23", "window": { "start": { "local": "1975-07-23T18:44:44+03:30", "utc": "1975-07-23T15:14:44Z", "ms": 175360483523.71774 }, "end": { "local": "1975-07-23T20:02:58+03:30", "utc": "1975-07-23T16:32:58Z", "ms": 175365178196.5872 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul.", "fact": "1975-07-22T04:29:09Z → 1975-07-23T05:28:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:45–20:03 on the 22nd, 18:45–20:03 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 78 of 78 minutes on the 22nd and 0 of 78 on the 23rd.", "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 35177 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Mashhad, 1975: Tuesday 22 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": "1975-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-22", "confidence": "determinate" } ], "quote": "In Mashhad, Śiva Śayanotsava 1975 falls on Tuesday 22 July. Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2280, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1975-07-22T07:59:09+03:30", "utc": "1975-07-22T04:29:09Z", "ms": 175235348799.96332 }, "end": { "local": "1975-07-23T08:58:27+03:30", "utc": "1975-07-23T05:28:27Z", "ms": 175325306507.61282 } }, "kaala": "udaya-3", "days": [ { "local_date": "1975-07-22", "window": { "start": { "local": "1975-07-22T04:30:05+03:30", "utc": "1975-07-22T01:00:05Z", "ms": 175222804961.89935 }, "end": { "local": "1975-07-22T07:21:09+03:30", "utc": "1975-07-22T03:51:09Z", "ms": 175233068690.64322 } }, "covered_min": 0, "window_min": 171, "qualifies": false }, { "local_date": "1975-07-23", "window": { "start": { "local": "1975-07-23T04:30:49+03:30", "utc": "1975-07-23T01:00:49Z", "ms": 175309249034.11862 }, "end": { "local": "1975-07-23T07:21:36+03:30", "utc": "1975-07-23T03:51:36Z", "ms": 175319495932.03845 } }, "covered_min": 171, "window_min": 171, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul.", "fact": "1975-07-22T04:29:09Z → 1975-07-23T05:28:27Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 04:30–07:21 on the 22nd, 04:31–07:22 on the 23rd.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 171 minutes on the 22nd and 171 of 171 on the 23rd.", "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 2280 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Mashhad, 1975: Wednesday 23 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": "1975-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-23", "confidence": "determinate" } ], "quote": "In Mashhad, Vyāsa Pūjā 1975 falls on Wednesday 23 July. Pūrṇimā runs from 07:59 on Tue 22 Jul to 08:58 on Wed 23 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27403, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1975-07-24T10:20:58+03:30", "utc": "1975-07-24T06:50:58Z", "ms": 175416657621.37125 }, "end": { "local": "1975-07-25T12:05:55+03:30", "utc": "1975-07-25T08:35:55Z", "ms": 175509354514.91437 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-07-24T10:20:58+03:30", "utc": "1975-07-24T06:50:58Z", "ms": 175416657621.37125 }, "end": { "local": "1975-07-25T12:05:55+03:30", "utc": "1975-07-25T08:35:55Z", "ms": 175509354514.91437 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-07-24", "window": { "start": { "local": "1975-07-24T19:12:02+03:30", "utc": "1975-07-24T15:42:02Z", "ms": 175448521863.79288 }, "end": { "local": "1975-07-24T19:12:02+03:30", "utc": "1975-07-24T15:42:02Z", "ms": 175448521863.79288 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-07-25", "window": { "start": { "local": "1975-07-25T19:42:38+03:30", "utc": "1975-07-25T16:12:38Z", "ms": 175536757641.7683 }, "end": { "local": "1975-07-25T19:42:38+03:30", "utc": "1975-07-25T16:12:38Z", "ms": 175536757641.7683 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:21 on Thu 24 Jul to 12:06 on Fri 25 Jul.", "fact": "1975-07-24T06:50:58Z → 1975-07-25T08:35:55Z" }, { "step": "kaala", "text": "Moonrise is at 19:12 on the 24th and 19:43 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 24th and is not on the 25th.", "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 27403 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Mashhad, 1975: Thursday 24 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": "1975-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-24", "confidence": "determinate" } ], "quote": "In Mashhad, Aśūnya Śayana Vrata (Āṣāḍha) 1975 falls on Thursday 24 July. Dvitīyā runs from 10:21 on Thu 24 Jul to 12:06 on Fri 25 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-07-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14942, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-07-26T14:10:49+03:30", "utc": "1975-07-26T10:40:49Z", "ms": 175603249022.2874 }, "end": { "local": "1975-07-27T16:30:40+03:30", "utc": "1975-07-27T13:00:40Z", "ms": 175698040354.60587 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-07-26T14:10:49+03:30", "utc": "1975-07-26T10:40:49Z", "ms": 175603249022.2874 }, "end": { "local": "1975-07-27T16:30:40+03:30", "utc": "1975-07-27T13:00:40Z", "ms": 175698040354.60587 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-07-26", "window": { "start": { "local": "1975-07-26T20:11:31+03:30", "utc": "1975-07-26T16:41:31Z", "ms": 175624890527.6435 }, "end": { "local": "1975-07-26T20:11:31+03:30", "utc": "1975-07-26T16:41:31Z", "ms": 175624890527.6435 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-07-27", "window": { "start": { "local": "1975-07-27T20:39:42+03:30", "utc": "1975-07-27T17:09:42Z", "ms": 175712982409.56387 }, "end": { "local": "1975-07-27T20:39:42+03:30", "utc": "1975-07-27T17:09:42Z", "ms": 175712982409.56387 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:11 on Sat 26 Jul to 16:31 on Sun 27 Jul.", "fact": "1975-07-26T10:40:49Z → 1975-07-27T13:00:40Z" }, { "step": "kaala", "text": "Moonrise is at 20:12 on the 26th and 20:40 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 26th and is not on the 27th.", "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 14942 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Saturday 26 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": "1975-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-07-26", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Saturday 26 July. Caturthī runs from 14:11 on Sat 26 Jul to 16:31 on Sun 27 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-07-26", "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/1975/ekadashi?on=1975-08-03", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9233, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-08-03T02:05:25+03:30", "utc": "1975-08-02T22:35:25Z", "ms": 176250925462.3286 }, "end": { "local": "1975-08-04T01:22:42+03:30", "utc": "1975-08-03T21:52:42Z", "ms": 176334762393.85504 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-03T02:05:25+03:30", "utc": "1975-08-02T22:35:25Z", "ms": 176250925462.3286 }, "end": { "local": "1975-08-04T01:22:42+03:30", "utc": "1975-08-03T21:52:42Z", "ms": 176334762393.85504 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-08-03", "window": { "start": { "local": "1975-08-03T04:39:19+03:30", "utc": "1975-08-03T01:09:19Z", "ms": 176260158597.68475 }, "end": { "local": "1975-08-03T04:39:19+03:30", "utc": "1975-08-03T01:09:19Z", "ms": 176260158597.68475 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-08-04", "window": { "start": { "local": "1975-08-04T04:40:07+03:30", "utc": "1975-08-04T01:10:07Z", "ms": 176346606505.4503 }, "end": { "local": "1975-08-04T04:40:07+03:30", "utc": "1975-08-04T01:10:07Z", "ms": 176346606505.4503 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:05 on Sun 3 Aug to 01:23 on Mon 4 Aug.", "fact": "1975-08-02T22:35:25Z → 1975-08-03T21:52:42Z" }, { "step": "kaala", "text": "Sunrise is at 04:39 on the 3rd and 04:40 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9233 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Mashhad, 1975: Sunday 3 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": "1975-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-03", "confidence": "determinate" } ], "quote": "In Mashhad, Kāmikā Ekādaśī 1975 falls on Sunday 3 August. Ekādaśī runs from 02:05 on Sun 3 Aug to 01:23 on Mon 4 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-08-03", "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/1975/pradosha-vrata?on=1975-08-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6050, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-08-04T23:51:02+03:30", "utc": "1975-08-04T20:21:02Z", "ms": 176415661516.5055 }, "end": { "local": "1975-08-05T21:35:38+03:30", "utc": "1975-08-05T18:05:38Z", "ms": 176493938414.9501 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-04T23:51:02+03:30", "utc": "1975-08-04T20:21:02Z", "ms": 176415661516.5055 }, "end": { "local": "1975-08-05T21:35:38+03:30", "utc": "1975-08-05T18:05:38Z", "ms": 176493938414.9501 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-08-04", "window": { "start": { "local": "1975-08-04T18:34:44+03:30", "utc": "1975-08-04T15:04:44Z", "ms": 176396684239.39343 }, "end": { "local": "1975-08-04T19:55:34+03:30", "utc": "1975-08-04T16:25:34Z", "ms": 176401533616.60214 } }, "covered_min": 0, "window_min": 81, "qualifies": false }, { "local_date": "1975-08-05", "window": { "start": { "local": "1975-08-05T18:33:45+03:30", "utc": "1975-08-05T15:03:45Z", "ms": 176483025161.73517 }, "end": { "local": "1975-08-05T19:54:49+03:30", "utc": "1975-08-05T16:24:49Z", "ms": 176487888841.6799 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:51 on Mon 4 Aug to 21:36 on Tue 5 Aug.", "fact": "1975-08-04T20:21:02Z → 1975-08-05T18:05:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:35–19:56 on the 4th, 18:34–19:55 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 81 minutes on the 4th and 81 of 81 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 6050 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Tuesday 5 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": "1975-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-05", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Tuesday 5 August. Trayodaśī runs from 23:51 on Mon 4 Aug to 21:36 on Tue 5 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-08-05", "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/1975/shivaratri?on=1975-08-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5886, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-08-05T21:35:38+03:30", "utc": "1975-08-05T18:05:38Z", "ms": 176493938414.9501 }, "end": { "local": "1975-08-06T18:44:31+03:30", "utc": "1975-08-06T15:14:31Z", "ms": 176570071084.343 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-05T21:35:38+03:30", "utc": "1975-08-05T18:05:38Z", "ms": 176493938414.9501 }, "end": { "local": "1975-08-06T18:44:31+03:30", "utc": "1975-08-06T15:14:31Z", "ms": 176570071084.343 } }, "kaala": "nishita", "days": [ { "local_date": "1975-08-05", "window": { "start": { "local": "1975-08-05T23:13:44+03:30", "utc": "1975-08-05T19:43:44Z", "ms": 176499823961.52786 }, "end": { "local": "1975-08-06T00:01:44+03:30", "utc": "1975-08-05T20:31:44Z", "ms": 176502703961.52786 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-06", "window": { "start": { "local": "1975-08-06T23:13:38+03:30", "utc": "1975-08-06T19:43:38Z", "ms": 176586217924.92834 }, "end": { "local": "1975-08-07T00:01:38+03:30", "utc": "1975-08-06T20:31:38Z", "ms": 176589097924.92834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:36 on Tue 5 Aug to 18:45 on Wed 6 Aug.", "fact": "1975-08-05T18:05:38Z → 1975-08-06T15:14:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:14–00:02 on the 5th, 23:14–00:02 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 5886 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Tuesday 5 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": "1975-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-05", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Tuesday 5 August. Caturdaśī runs from 21:36 on Tue 5 Aug to 18:45 on Wed 6 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-08-05", "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/1975/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10512, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-08-09T08:17:40+03:30", "utc": "1975-08-09T04:47:40Z", "ms": 176791659656.5339 }, "end": { "local": "1975-08-10T04:46:29+03:30", "utc": "1975-08-10T01:16:29Z", "ms": 176865389420.65625 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-09T08:17:40+03:30", "utc": "1975-08-09T04:47:40Z", "ms": 176791659656.5339 }, "end": { "local": "1975-08-10T04:46:29+03:30", "utc": "1975-08-10T01:16:29Z", "ms": 176865389420.65625 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-09", "window": { "start": { "local": "1975-08-09T11:12:52+03:30", "utc": "1975-08-09T07:42:52Z", "ms": 176802172008.59842 }, "end": { "local": "1975-08-09T12:00:52+03:30", "utc": "1975-08-09T08:30:52Z", "ms": 176805052008.59842 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-10", "window": { "start": { "local": "1975-08-10T11:12:44+03:30", "utc": "1975-08-10T07:42:44Z", "ms": 176888563583.48834 }, "end": { "local": "1975-08-10T12:00:44+03:30", "utc": "1975-08-10T08:30:44Z", "ms": 176891443583.48834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 08:18 on Sat 9 Aug to 04:46 on Sun 10 Aug.", "fact": "1975-08-09T04:47:40Z → 1975-08-10T01:16:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 9th, 11:13–12:01 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10512 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Mashhad, 1975: Saturday 9 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": "1975-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-09", "confidence": "determinate" } ], "quote": "In Mashhad, Madhusravā Tṛtīyā (Hariyali Teej) 1975 falls on Saturday 9 August. Tṛtīyā runs from 08:18 on Sat 9 Aug to 04:46 on Sun 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-08-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23174, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-08-10T04:46:29+03:30", "utc": "1975-08-10T01:16:29Z", "ms": 176865389420.65625 }, "end": { "local": "1975-08-11T01:30:59+03:30", "utc": "1975-08-10T22:00:59Z", "ms": 176940058907.06943 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-10T04:46:29+03:30", "utc": "1975-08-10T01:16:29Z", "ms": 176865389420.65625 }, "end": { "local": "1975-08-11T01:30:59+03:30", "utc": "1975-08-10T22:00:59Z", "ms": 176940058907.06943 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-10", "window": { "start": { "local": "1975-08-10T11:12:44+03:30", "utc": "1975-08-10T07:42:44Z", "ms": 176888563583.48834 }, "end": { "local": "1975-08-10T12:00:44+03:30", "utc": "1975-08-10T08:30:44Z", "ms": 176891443583.48834 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-11", "window": { "start": { "local": "1975-08-11T11:12:35+03:30", "utc": "1975-08-11T07:42:35Z", "ms": 176974954575.5451 }, "end": { "local": "1975-08-11T12:00:35+03:30", "utc": "1975-08-11T08:30:35Z", "ms": 176977834575.5451 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:46 on Sun 10 Aug to 01:31 on Mon 11 Aug.", "fact": "1975-08-10T01:16:29Z → 1975-08-10T22:00:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 10th, 11:13–12:01 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 23174 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Sunday 10 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": "1975-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-10", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Sunday 10 August. Caturthī runs from 04:46 on Sun 10 Aug to 01:31 on Mon 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-08-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34896, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-08-11T01:30:59+03:30", "utc": "1975-08-10T22:00:59Z", "ms": 176940058907.06943 }, "end": { "local": "1975-08-11T22:39:30+03:30", "utc": "1975-08-11T19:09:30Z", "ms": 177016170439.3322 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-11T01:30:59+03:30", "utc": "1975-08-10T22:00:59Z", "ms": 176940058907.06943 }, "end": { "local": "1975-08-11T22:39:30+03:30", "utc": "1975-08-11T19:09:30Z", "ms": 177016170439.3322 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-11", "window": { "start": { "local": "1975-08-11T11:12:35+03:30", "utc": "1975-08-11T07:42:35Z", "ms": 176974954575.5451 }, "end": { "local": "1975-08-11T12:00:35+03:30", "utc": "1975-08-11T08:30:35Z", "ms": 176977834575.5451 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-12", "window": { "start": { "local": "1975-08-12T11:12:25+03:30", "utc": "1975-08-12T07:42:25Z", "ms": 177061344988.36163 }, "end": { "local": "1975-08-12T12:00:25+03:30", "utc": "1975-08-12T08:30:25Z", "ms": 177064224988.36163 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:31 on Mon 11 Aug to 22:40 on Mon 11 Aug.", "fact": "1975-08-10T22:00:59Z → 1975-08-11T19:09:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 11th, 11:12–12:00 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34896 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Mashhad, 1975: Monday 11 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": "1975-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-11", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Pañcamī 1975 falls on Monday 11 August. Pañcamī runs from 01:31 on Mon 11 Aug to 22:40 on Mon 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-08-17", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41291, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-08-16T16:51:52+03:30", "utc": "1975-08-16T13:21:52Z", "ms": 177427311656.0662 }, "end": { "local": "1975-08-17T17:23:12+03:30", "utc": "1975-08-17T13:53:12Z", "ms": 177515592355.7744 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-16T16:51:52+03:30", "utc": "1975-08-16T13:21:52Z", "ms": 177427311656.0662 }, "end": { "local": "1975-08-17T17:23:12+03:30", "utc": "1975-08-17T13:53:12Z", "ms": 177515592355.7744 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-08-17", "window": { "start": { "local": "1975-08-17T04:50:35+03:30", "utc": "1975-08-17T01:20:35Z", "ms": 177470435064.77017 }, "end": { "local": "1975-08-17T04:50:35+03:30", "utc": "1975-08-17T01:20:35Z", "ms": 177470435064.77017 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-08-18", "window": { "start": { "local": "1975-08-18T04:51:23+03:30", "utc": "1975-08-18T01:21:23Z", "ms": 177556883241.56567 }, "end": { "local": "1975-08-18T04:51:23+03:30", "utc": "1975-08-18T01:21:23Z", "ms": 177556883241.56567 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:52 on Sat 16 Aug to 17:23 on Sun 17 Aug.", "fact": "1975-08-16T13:21:52Z → 1975-08-17T13:53:12Z" }, { "step": "kaala", "text": "Sunrise is at 04:51 on the 17th and 04:51 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 41291 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Mashhad, 1975: Sunday 17 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": "1975-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-17", "confidence": "determinate" } ], "quote": "In Mashhad, Putradā Ekādaśī 1975 falls on Sunday 17 August. Ekādaśī runs from 16:52 on Sat 16 Aug to 17:23 on Sun 17 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-08-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19424, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-08-17T17:23:12+03:30", "utc": "1975-08-17T13:53:12Z", "ms": 177515592355.7744 }, "end": { "local": "1975-08-18T18:20:48+03:30", "utc": "1975-08-18T14:50:48Z", "ms": 177605447878.0445 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-17T17:23:12+03:30", "utc": "1975-08-17T13:53:12Z", "ms": 177515592355.7744 }, "end": { "local": "1975-08-18T18:20:48+03:30", "utc": "1975-08-18T14:50:48Z", "ms": 177605447878.0445 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-17", "window": { "start": { "local": "1975-08-17T11:11:29+03:30", "utc": "1975-08-17T07:41:29Z", "ms": 177493288611.6406 }, "end": { "local": "1975-08-17T11:59:29+03:30", "utc": "1975-08-17T08:29:29Z", "ms": 177496168611.6406 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-08-18", "window": { "start": { "local": "1975-08-18T11:11:16+03:30", "utc": "1975-08-18T07:41:16Z", "ms": 177579675718.20624 }, "end": { "local": "1975-08-18T11:59:16+03:30", "utc": "1975-08-18T08:29:16Z", "ms": 177582555718.20624 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:23 on Sun 17 Aug to 18:21 on Mon 18 Aug.", "fact": "1975-08-17T13:53:12Z → 1975-08-18T14:50:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 17th, 11:11–11:59 on the 18th.", "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 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19424 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Mashhad, 1975: Monday 18 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": "1975-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-18", "confidence": "determinate" } ], "quote": "In Mashhad, Dāmodara Dvādaśī 1975 falls on Monday 18 August. Dvādaśī runs from 17:23 on Sun 17 Aug to 18:21 on Mon 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-08-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-19", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 96, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-08-18T18:20:48+03:30", "utc": "1975-08-18T14:50:48Z", "ms": 177605447878.0445 }, "end": { "local": "1975-08-19T19:40:58+03:30", "utc": "1975-08-19T16:10:58Z", "ms": 177696658337.41467 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-18T18:20:48+03:30", "utc": "1975-08-18T14:50:48Z", "ms": 177605447878.0445 }, "end": { "local": "1975-08-19T19:40:58+03:30", "utc": "1975-08-19T16:10:58Z", "ms": 177696658337.41467 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-08-18", "window": { "start": { "local": "1975-08-18T18:19:08+03:30", "utc": "1975-08-18T14:49:08Z", "ms": 177605348194.8468 }, "end": { "local": "1975-08-18T19:43:33+03:30", "utc": "1975-08-18T16:13:33Z", "ms": 177610412614.89542 } }, "covered_min": 83, "window_min": 84, "qualifies": true }, { "local_date": "1975-08-19", "window": { "start": { "local": "1975-08-19T18:17:53+03:30", "utc": "1975-08-19T14:47:53Z", "ms": 177691673283.16052 }, "end": { "local": "1975-08-19T19:42:34+03:30", "utc": "1975-08-19T16:12:34Z", "ms": 177696754095.16736 } }, "covered_min": 83, "window_min": 85, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:21 on Mon 18 Aug to 19:41 on Tue 19 Aug.", "fact": "1975-08-18T14:50:48Z → 1975-08-19T16:10:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–19:44 on the 18th, 18:18–19:43 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 83 of 84 minutes on the 18th and 83 of 85 on the 19th.", "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 96 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Tuesday 19 August.", "fact": "confidence: boundary (margin, 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": "1975-08-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-18", "confidence": "boundary" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Tuesday 19 August. Trayodaśī runs from 18:21 on Mon 18 Aug to 19:41 on Tue 19 Aug and covers 83 of 85 minutes of pradoṣa that evening. It also reaches the previous evening for 83 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 36 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-08-19", "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/1975/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19404, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-08-20T21:20:44+03:30", "utc": "1975-08-20T17:50:44Z", "ms": 177789044041.5473 }, "end": { "local": "1975-08-21T23:17:38+03:30", "utc": "1975-08-21T19:47:38Z", "ms": 177882457640.66104 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1975-08-21T10:17:11+03:30", "utc": "1975-08-21T06:47:11Z", "ms": 177835631071.49057 }, "end": { "local": "1975-08-21T23:17:38+03:30", "utc": "1975-08-21T19:47:38Z", "ms": 177882457640.66104 } }, "kaala": "day", "days": [ { "local_date": "1975-08-20", "window": { "start": { "local": "1975-08-20T04:52:59+03:30", "utc": "1975-08-20T01:22:59Z", "ms": 177729779373.21185 }, "end": { "local": "1975-08-21T04:53:47+03:30", "utc": "1975-08-21T01:23:47Z", "ms": 177816227324.33212 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1975-08-21", "window": { "start": { "local": "1975-08-21T04:53:47+03:30", "utc": "1975-08-21T01:23:47Z", "ms": 177816227324.33212 }, "end": { "local": "1975-08-22T04:54:35+03:30", "utc": "1975-08-22T01:24:35Z", "ms": 177902675198.4238 } }, "covered_min": 780, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:21 on Wed 20 Aug to 23:18 on Thu 21 Aug. Its second half begins at 10:17 on Thu 21 Aug.", "fact": "1975-08-20T17:50:44Z → 1975-08-21T19:47:38Z · second half from 1975-08-21T06:47:11Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 04:53 on the 20th, and from 04:54 on the 21st.", "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 20th and 780 of 1441 on the 21st.", "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 19404 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Mashhad, 1975: Thursday 21 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": "1975-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-21", "confidence": "determinate" } ], "quote": "In Mashhad, Rakṣā Bandhana (Rakhi) 1975 falls on Thursday 21 August. The second half of Pūrṇimā runs from 10:17 on Thu 21 Aug to 23:18 on Thu 21 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33716, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-08-20T21:20:44+03:30", "utc": "1975-08-20T17:50:44Z", "ms": 177789044041.5473 }, "end": { "local": "1975-08-21T23:17:38+03:30", "utc": "1975-08-21T19:47:38Z", "ms": 177882457640.66104 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1975-08-20T21:20:44+03:30", "utc": "1975-08-20T17:50:44Z", "ms": 177789044041.5473 }, "end": { "local": "1975-08-21T23:17:38+03:30", "utc": "1975-08-21T19:47:38Z", "ms": 177882457640.66104 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-20", "window": { "start": { "local": "1975-08-20T11:10:48+03:30", "utc": "1975-08-20T07:40:48Z", "ms": 177752448413.69943 }, "end": { "local": "1975-08-20T11:58:48+03:30", "utc": "1975-08-20T08:28:48Z", "ms": 177755328413.69943 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-08-21", "window": { "start": { "local": "1975-08-21T11:10:34+03:30", "utc": "1975-08-21T07:40:34Z", "ms": 177838834031.5426 }, "end": { "local": "1975-08-21T11:58:34+03:30", "utc": "1975-08-21T08:28:34Z", "ms": 177841714031.5426 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:21 on Wed 20 Aug to 23:18 on Thu 21 Aug.", "fact": "1975-08-20T17:50:44Z → 1975-08-21T19:47:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 20th, 11:11–11:59 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33716 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Mashhad, 1975: Thursday 21 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": "1975-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-21", "confidence": "determinate" } ], "quote": "In Mashhad, Ṛṣi Tarpaṇa 1975 falls on Thursday 21 August. Pūrṇimā runs from 21:21 on Wed 20 Aug to 23:18 on Thu 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26085, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1975-08-23T01:29:11+03:30", "utc": "1975-08-22T21:59:11Z", "ms": 177976750690.92715 }, "end": { "local": "1975-08-24T03:52:04+03:30", "utc": "1975-08-24T00:22:04Z", "ms": 178071723712.50876 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-23T01:29:11+03:30", "utc": "1975-08-22T21:59:11Z", "ms": 177976750690.92715 }, "end": { "local": "1975-08-24T03:52:04+03:30", "utc": "1975-08-24T00:22:04Z", "ms": 178071723712.50876 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-08-22", "window": { "start": { "local": "1975-08-22T18:14:26+03:30", "utc": "1975-08-22T14:44:26Z", "ms": 177950665522.65472 }, "end": { "local": "1975-08-22T18:14:26+03:30", "utc": "1975-08-22T14:44:26Z", "ms": 177950665522.65472 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-08-23", "window": { "start": { "local": "1975-08-23T18:42:56+03:30", "utc": "1975-08-23T15:12:56Z", "ms": 178038775999.9564 }, "end": { "local": "1975-08-23T18:42:56+03:30", "utc": "1975-08-23T15:12:56Z", "ms": 178038775999.9564 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 01:29 on Sat 23 Aug to 03:52 on Sun 24 Aug.", "fact": "1975-08-22T21:59:11Z → 1975-08-24T00:22:04Z" }, { "step": "kaala", "text": "Moonrise is at 18:14 on the 22nd and 18:43 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26085 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Mashhad, 1975: Saturday 23 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": "1975-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-23", "confidence": "determinate" } ], "quote": "In Mashhad, Aśūnya Śayana Vrata 1975 falls on Saturday 23 August. Dvitīyā runs from 01:29 on Sat 23 Aug to 03:52 on Sun 24 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17298, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-08-24T03:52:04+03:30", "utc": "1975-08-24T00:22:04Z", "ms": 178071723712.50876 }, "end": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-24T03:52:04+03:30", "utc": "1975-08-24T00:22:04Z", "ms": 178071723712.50876 }, "end": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-24", "window": { "start": { "local": "1975-08-24T11:09:48+03:30", "utc": "1975-08-24T07:39:48Z", "ms": 178097988150.96912 }, "end": { "local": "1975-08-24T11:57:48+03:30", "utc": "1975-08-24T08:27:48Z", "ms": 178100868150.96912 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-25", "window": { "start": { "local": "1975-08-25T11:09:32+03:30", "utc": "1975-08-25T07:39:32Z", "ms": 178184372000.0077 }, "end": { "local": "1975-08-25T11:57:32+03:30", "utc": "1975-08-25T08:27:32Z", "ms": 178187252000.0077 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 03:52 on Sun 24 Aug to 06:21 on Mon 25 Aug.", "fact": "1975-08-24T00:22:04Z → 1975-08-25T02:51:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 24th, 11:10–11:58 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17298 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Mashhad, 1975: Sunday 24 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": "1975-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-24", "confidence": "determinate" } ], "quote": "In Mashhad, Kajjalī Tṛtīyā (Kajari Teej) 1975 falls on Sunday 24 August. Tṛtīyā runs from 03:52 on Sun 24 Aug to 06:21 on Mon 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24072, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 }, "end": { "local": "1975-08-26T08:49:21+03:30", "utc": "1975-08-26T05:19:21Z", "ms": 178262360749.60864 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 }, "end": { "local": "1975-08-26T08:49:21+03:30", "utc": "1975-08-26T05:19:21Z", "ms": 178262360749.60864 } }, "kaala": "sayahna", "days": [ { "local_date": "1975-08-25", "window": { "start": { "local": "1975-08-25T15:31:28+03:30", "utc": "1975-08-25T12:01:28Z", "ms": 178200088178.14166 }, "end": { "local": "1975-08-25T18:10:06+03:30", "utc": "1975-08-25T14:40:06Z", "ms": 178209605630.23096 } }, "covered_min": 159, "window_min": 159, "qualifies": true }, { "local_date": "1975-08-26", "window": { "start": { "local": "1975-08-26T15:30:33+03:30", "utc": "1975-08-26T12:00:33Z", "ms": 178286433146.60178 }, "end": { "local": "1975-08-26T18:08:45+03:30", "utc": "1975-08-26T14:38:45Z", "ms": 178295924945.687 } }, "covered_min": 0, "window_min": 158, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:21 on Mon 25 Aug to 08:49 on Tue 26 Aug.", "fact": "1975-08-25T02:51:14Z → 1975-08-26T05:19:21Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:31–18:10 on the 25th, 15:31–18:09 on the 26th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 159 of 159 minutes on the 25th and 0 of 158 on the 26th.", "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 24072 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Mashhad, 1975: Monday 25 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": "1975-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-25", "confidence": "determinate" } ], "quote": "In Mashhad, Bahulā Caturthī 1975 falls on Monday 25 August. Caturthī runs from 06:21 on Mon 25 Aug to 08:49 on Tue 26 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-08-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40190, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 }, "end": { "local": "1975-08-26T08:49:21+03:30", "utc": "1975-08-26T05:19:21Z", "ms": 178262360749.60864 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-25T06:21:14+03:30", "utc": "1975-08-25T02:51:14Z", "ms": 178167074177.804 }, "end": { "local": "1975-08-26T08:49:21+03:30", "utc": "1975-08-26T05:19:21Z", "ms": 178262360749.60864 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-08-24", "window": { "start": { "local": "1975-08-24T19:11:24+03:30", "utc": "1975-08-24T15:41:24Z", "ms": 178126884128.6637 }, "end": { "local": "1975-08-24T19:11:24+03:30", "utc": "1975-08-24T15:41:24Z", "ms": 178126884128.6637 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-08-25", "window": { "start": { "local": "1975-08-25T19:40:47+03:30", "utc": "1975-08-25T16:10:47Z", "ms": 178215047265.17654 }, "end": { "local": "1975-08-25T19:40:47+03:30", "utc": "1975-08-25T16:10:47Z", "ms": 178215047265.17654 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:21 on Mon 25 Aug to 08:49 on Tue 26 Aug.", "fact": "1975-08-25T02:51:14Z → 1975-08-26T05:19:21Z" }, { "step": "kaala", "text": "Moonrise is at 19:11 on the 24th and 19:41 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 24th and is on the 25th.", "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 40190 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Monday 25 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": "1975-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-25", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Monday 25 August. Caturthī runs from 06:21 on Mon 25 Aug to 08:49 on Tue 26 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-08-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-28", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 136, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-08-27T11:06:43+03:30", "utc": "1975-08-27T07:36:43Z", "ms": 178357002524.104 }, "end": { "local": "1975-08-28T13:02:05+03:30", "utc": "1975-08-28T09:32:05Z", "ms": 178450325112.9231 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-27T11:06:43+03:30", "utc": "1975-08-27T07:36:43Z", "ms": 178357002524.104 }, "end": { "local": "1975-08-28T13:02:05+03:30", "utc": "1975-08-28T09:32:05Z", "ms": 178450325112.9231 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-27", "window": { "start": { "local": "1975-08-27T11:08:59+03:30", "utc": "1975-08-27T07:38:59Z", "ms": 178357138511.7229 }, "end": { "local": "1975-08-27T11:56:59+03:30", "utc": "1975-08-27T08:26:59Z", "ms": 178360018511.7229 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-28", "window": { "start": { "local": "1975-08-28T11:08:41+03:30", "utc": "1975-08-28T07:38:41Z", "ms": 178443521208.1959 }, "end": { "local": "1975-08-28T11:56:41+03:30", "utc": "1975-08-28T08:26:41Z", "ms": 178446401208.1959 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:07 on Wed 27 Aug to 13:02 on Thu 28 Aug.", "fact": "1975-08-27T07:36:43Z → 1975-08-28T09:32:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 27th, 11:09–11:57 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 48 of 48 on the 28th.", "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 136 s < 300 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Mashhad, 1975: Thursday 28 August.", "fact": "confidence: boundary (margin)" } ], "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": "1975-08-28", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-28", "confidence": "determinate" } ], "quote": "In Mashhad, Hala Ṣaṣṭhī 1975 falls on Thursday 28 August. Ṣaṣṭhī runs from 11:07 on Wed 27 Aug to 13:02 on Thu 28 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 2 min 16 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29110, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-08-29T14:24:09+03:30", "utc": "1975-08-29T10:54:09Z", "ms": 178541649385.382 }, "end": { "local": "1975-08-30T15:03:19+03:30", "utc": "1975-08-30T11:33:19Z", "ms": 178630399354.5254 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-29T14:24:09+03:30", "utc": "1975-08-29T10:54:09Z", "ms": 178541649385.382 }, "end": { "local": "1975-08-30T15:03:19+03:30", "utc": "1975-08-30T11:33:19Z", "ms": 178630399354.5254 } }, "kaala": "nishita", "days": [ { "local_date": "1975-08-29", "window": { "start": { "local": "1975-08-29T23:08:47+03:30", "utc": "1975-08-29T19:38:47Z", "ms": 178573127221.05676 }, "end": { "local": "1975-08-29T23:56:47+03:30", "utc": "1975-08-29T20:26:47Z", "ms": 178576007221.05676 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-08-30", "window": { "start": { "local": "1975-08-30T23:08:29+03:30", "utc": "1975-08-30T19:38:29Z", "ms": 178659509207.27713 }, "end": { "local": "1975-08-30T23:56:29+03:30", "utc": "1975-08-30T20:26:29Z", "ms": 178662389207.27713 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 14:24 on Fri 29 Aug to 15:03 on Sat 30 Aug.", "fact": "1975-08-29T10:54:09Z → 1975-08-30T11:33:19Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:09–23:57 on the 29th, 23:08–23:56 on the 30th.", "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 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29110 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Mashhad, 1975: Friday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-29", "confidence": "determinate" } ], "quote": "In Mashhad, Janmāṣṭamī 1975 falls on Friday 29 August. Aṣṭamī runs from 14:24 on Fri 29 Aug to 15:03 on Sat 30 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3924, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-08-28T13:02:05+03:30", "utc": "1975-08-28T09:32:05Z", "ms": 178450325112.9231 }, "end": { "local": "1975-08-29T14:24:09+03:30", "utc": "1975-08-29T10:54:09Z", "ms": 178541649385.382 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-08-28T13:02:05+03:30", "utc": "1975-08-28T09:32:05Z", "ms": 178450325112.9231 }, "end": { "local": "1975-08-29T14:24:09+03:30", "utc": "1975-08-29T10:54:09Z", "ms": 178541649385.382 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-08-28", "window": { "start": { "local": "1975-08-28T11:08:41+03:30", "utc": "1975-08-28T07:38:41Z", "ms": 178443521208.1959 }, "end": { "local": "1975-08-28T11:56:41+03:30", "utc": "1975-08-28T08:26:41Z", "ms": 178446401208.1959 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-08-29", "window": { "start": { "local": "1975-08-29T11:08:24+03:30", "utc": "1975-08-29T07:38:24Z", "ms": 178529903554.34552 }, "end": { "local": "1975-08-29T11:56:24+03:30", "utc": "1975-08-29T08:26:24Z", "ms": 178532783554.34552 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:02 on Thu 28 Aug to 14:24 on Fri 29 Aug.", "fact": "1975-08-28T09:32:05Z → 1975-08-29T10:54:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 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": "Saptamī 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3924 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Mashhad, 1975: Friday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-08-29", "confidence": "determinate" } ], "quote": "In Mashhad, Śītalā Saptamī 1975 falls on Friday 29 August. Saptamī runs from 13:02 on Thu 28 Aug to 14:24 on Fri 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-09-02", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25050, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-09-01T13:51:45+03:30", "utc": "1975-09-01T10:21:45Z", "ms": 178798905278.31973 }, "end": { "local": "1975-09-02T12:00:48+03:30", "utc": "1975-09-02T08:30:48Z", "ms": 178878647566.74582 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-01T13:51:45+03:30", "utc": "1975-09-01T10:21:45Z", "ms": 178798905278.31973 }, "end": { "local": "1975-09-02T12:00:48+03:30", "utc": "1975-09-02T08:30:48Z", "ms": 178878647566.74582 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-09-01", "window": { "start": { "local": "1975-09-01T05:02:30+03:30", "utc": "1975-09-01T01:32:30Z", "ms": 178767150148.31094 }, "end": { "local": "1975-09-01T05:02:30+03:30", "utc": "1975-09-01T01:32:30Z", "ms": 178767150148.31094 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-09-02", "window": { "start": { "local": "1975-09-02T05:03:17+03:30", "utc": "1975-09-02T01:33:17Z", "ms": 178853597332.47165 }, "end": { "local": "1975-09-02T05:03:17+03:30", "utc": "1975-09-02T01:33:17Z", "ms": 178853597332.47165 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:52 on Mon 1 Sep to 12:01 on Tue 2 Sep.", "fact": "1975-09-01T10:21:45Z → 1975-09-02T08:30:48Z" }, { "step": "kaala", "text": "Sunrise is at 05:03 on the 1st and 05:03 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25050 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Mashhad, 1975: Tuesday 2 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": "1975-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-02", "confidence": "determinate" } ], "quote": "In Mashhad, Ajā Ekādaśī 1975 falls on Tuesday 2 September. Ekādaśī runs from 13:52 on Mon 1 Sep to 12:01 on Tue 2 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-09-02", "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/1975/pradosha-vrata?on=1975-09-03", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30701, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-09-03T09:25:56+03:30", "utc": "1975-09-03T05:55:56Z", "ms": 178955755763.8209 }, "end": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-03T09:25:56+03:30", "utc": "1975-09-03T05:55:56Z", "ms": 178955755763.8209 }, "end": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-09-03", "window": { "start": { "local": "1975-09-03T17:57:37+03:30", "utc": "1975-09-03T14:27:37Z", "ms": 178986456748.86722 }, "end": { "local": "1975-09-03T19:26:35+03:30", "utc": "1975-09-03T15:56:35Z", "ms": 178991794724.65613 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1975-09-04", "window": { "start": { "local": "1975-09-04T17:56:11+03:30", "utc": "1975-09-04T14:26:11Z", "ms": 179072770823.24396 }, "end": { "local": "1975-09-04T19:25:27+03:30", "utc": "1975-09-04T15:55:27Z", "ms": 179078126529.4891 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:26 on Wed 3 Sep to 06:15 on Thu 4 Sep.", "fact": "1975-09-03T05:55:56Z → 1975-09-04T02:45:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:58–19:27 on the 3rd, 17:56–19:25 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 89 of 89 minutes on the 3rd and 0 of 89 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30701 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Wednesday 3 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": "1975-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-03", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Wednesday 3 September. Trayodaśī runs from 09:26 on Wed 3 Sep to 06:15 on Thu 4 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-09-03", "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/1975/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26033, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 }, "end": { "local": "1975-09-05T02:39:20+03:30", "utc": "1975-09-04T23:09:20Z", "ms": 179104159879.61337 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 }, "end": { "local": "1975-09-05T02:39:20+03:30", "utc": "1975-09-04T23:09:20Z", "ms": 179104159879.61337 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-09-03", "window": { "start": { "local": "1975-09-03T17:57:37+03:30", "utc": "1975-09-03T14:27:37Z", "ms": 178986456748.86722 }, "end": { "local": "1975-09-03T19:26:35+03:30", "utc": "1975-09-03T15:56:35Z", "ms": 178991794724.65613 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "1975-09-04", "window": { "start": { "local": "1975-09-04T17:56:11+03:30", "utc": "1975-09-04T14:26:11Z", "ms": 179072770823.24396 }, "end": { "local": "1975-09-04T19:25:27+03:30", "utc": "1975-09-04T15:55:27Z", "ms": 179078126529.4891 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:15 on Thu 4 Sep to 02:39 on Fri 5 Sep.", "fact": "1975-09-04T02:45:26Z → 1975-09-04T23:09:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:58–19:27 on the 3rd, 17:56–19:25 on the 4th.", "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 89 minutes on the 3rd and 89 of 89 on the 4th.", "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 26033 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Mashhad, 1975: Thursday 4 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": "1975-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-04", "confidence": "determinate" } ], "quote": "In Mashhad, Aghora Caturdaśī 1975 falls on Thursday 4 September. Caturdaśī runs from 06:15 on Thu 4 Sep to 02:39 on Fri 5 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/shivaratri?on=1975-09-04", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9865, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 }, "end": { "local": "1975-09-05T02:39:20+03:30", "utc": "1975-09-04T23:09:20Z", "ms": 179104159879.61337 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-04T06:15:26+03:30", "utc": "1975-09-04T02:45:26Z", "ms": 179030725554.58344 }, "end": { "local": "1975-09-05T02:39:20+03:30", "utc": "1975-09-04T23:09:20Z", "ms": 179104159879.61337 } }, "kaala": "nishita", "days": [ { "local_date": "1975-09-03", "window": { "start": { "local": "1975-09-03T23:07:14+03:30", "utc": "1975-09-03T19:37:14Z", "ms": 179005034158.0756 }, "end": { "local": "1975-09-03T23:55:14+03:30", "utc": "1975-09-03T20:25:14Z", "ms": 179007914158.0756 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-09-04", "window": { "start": { "local": "1975-09-04T23:06:55+03:30", "utc": "1975-09-04T19:36:55Z", "ms": 179091414721.66327 }, "end": { "local": "1975-09-04T23:54:55+03:30", "utc": "1975-09-04T20:24:55Z", "ms": 179094294721.66327 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:15 on Thu 4 Sep to 02:39 on Fri 5 Sep.", "fact": "1975-09-04T02:45:26Z → 1975-09-04T23:09:20Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:07–23:55 on the 3rd, 23:07–23:55 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9865 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Thursday 4 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": "1975-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-04", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Thursday 4 September. Caturdaśī runs from 06:15 on Thu 4 Sep to 02:39 on Fri 5 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-09-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25263, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-09-05T22:48:41+03:30", "utc": "1975-09-05T19:18:41Z", "ms": 179176721439.04584 }, "end": { "local": "1975-09-06T18:54:54+03:30", "utc": "1975-09-06T15:24:54Z", "ms": 179249094446.7304 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-05T22:48:41+03:30", "utc": "1975-09-05T19:18:41Z", "ms": 179176721439.04584 }, "end": { "local": "1975-09-06T18:54:54+03:30", "utc": "1975-09-06T15:24:54Z", "ms": 179249094446.7304 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-05", "window": { "start": { "local": "1975-09-05T11:06:12+03:30", "utc": "1975-09-05T07:36:12Z", "ms": 179134571537.45612 }, "end": { "local": "1975-09-05T11:54:12+03:30", "utc": "1975-09-05T08:24:12Z", "ms": 179137451537.45612 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-09-06", "window": { "start": { "local": "1975-09-06T11:05:52+03:30", "utc": "1975-09-06T07:35:52Z", "ms": 179220951649.48065 }, "end": { "local": "1975-09-06T11:53:52+03:30", "utc": "1975-09-06T08:23:52Z", "ms": 179223831649.48065 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 22:49 on Fri 5 Sep to 18:55 on Sat 6 Sep.", "fact": "1975-09-05T19:18:41Z → 1975-09-06T15:24:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 5th, 11:06–11:54 on the 6th.", "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 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25263 s" }, { "step": "ruling", "text": "Rudra Vrata, Mashhad, 1975: Saturday 6 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": "1975-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-06", "confidence": "determinate" } ], "quote": "In Mashhad, Rudra Vrata 1975 falls on Saturday 6 September. Pratipadā runs from 22:49 on Fri 5 Sep to 18:55 on Sat 6 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 658, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-09-08T11:42:13+03:30", "utc": "1975-09-08T08:12:13Z", "ms": 179395932876.26416 }, "end": { "local": "1975-09-09T08:43:20+03:30", "utc": "1975-09-09T05:13:20Z", "ms": 179471600038.85458 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-08T11:42:13+03:30", "utc": "1975-09-08T08:12:13Z", "ms": 179395932876.26416 }, "end": { "local": "1975-09-09T08:43:20+03:30", "utc": "1975-09-09T05:13:20Z", "ms": 179471600038.85458 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-08", "window": { "start": { "local": "1975-09-08T11:05:11+03:30", "utc": "1975-09-08T07:35:11Z", "ms": 179393711233.8716 }, "end": { "local": "1975-09-08T11:53:11+03:30", "utc": "1975-09-08T08:23:11Z", "ms": 179396591233.8716 } }, "covered_min": 11, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-09", "window": { "start": { "local": "1975-09-09T11:04:51+03:30", "utc": "1975-09-09T07:34:51Z", "ms": 179480090733.38727 }, "end": { "local": "1975-09-09T11:52:51+03:30", "utc": "1975-09-09T08:22:51Z", "ms": 179482970733.38727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:42 on Mon 8 Sep to 08:43 on Tue 9 Sep.", "fact": "1975-09-08T08:12:13Z → 1975-09-09T05:13:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 8th, 11:05–11:53 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 11 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 658 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Mashhad, 1975: Monday 8 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": "1975-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-08", "confidence": "determinate" } ], "quote": "In Mashhad, Gaṇeśa Caturthī 1975 falls on Monday 8 September. Caturthī runs from 11:42 on Mon 8 Sep to 08:43 on Tue 9 Sep and covers 11 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 658, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1975-09-07T15:09:13+03:30", "utc": "1975-09-07T11:39:13Z", "ms": 179321953141.09253 }, "end": { "local": "1975-09-08T11:42:13+03:30", "utc": "1975-09-08T08:12:13Z", "ms": 179395932876.26416 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-07T15:09:13+03:30", "utc": "1975-09-07T11:39:13Z", "ms": 179321953141.09253 }, "end": { "local": "1975-09-08T11:42:13+03:30", "utc": "1975-09-08T08:12:13Z", "ms": 179395932876.26416 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-07", "window": { "start": { "local": "1975-09-07T11:05:32+03:30", "utc": "1975-09-07T07:35:32Z", "ms": 179307331543.92236 }, "end": { "local": "1975-09-07T11:53:32+03:30", "utc": "1975-09-07T08:23:32Z", "ms": 179310211543.92236 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-09-08", "window": { "start": { "local": "1975-09-08T11:05:11+03:30", "utc": "1975-09-08T07:35:11Z", "ms": 179393711233.8716 }, "end": { "local": "1975-09-08T11:53:11+03:30", "utc": "1975-09-08T08:23:11Z", "ms": 179396591233.8716 } }, "covered_min": 37, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:09 on Sun 7 Sep to 11:42 on Mon 8 Sep.", "fact": "1975-09-07T11:39:13Z → 1975-09-08T08:12:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 7th, 11:05–11:53 on the 8th.", "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 7th and 37 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 658 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Mashhad, 1975: Monday 8 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": "1975-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-08", "confidence": "determinate" } ], "quote": "In Mashhad, Haritālikā Vrata (Hartalika Teej) 1975 falls on Monday 8 September. Tṛtīyā runs from 15:09 on Sun 7 Sep to 11:42 on Mon 8 Sep and covers 37 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8491, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-09-09T08:43:20+03:30", "utc": "1975-09-09T05:13:20Z", "ms": 179471600038.85458 }, "end": { "local": "1975-09-10T06:20:19+03:30", "utc": "1975-09-10T02:50:19Z", "ms": 179549419135.35883 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-09T08:43:20+03:30", "utc": "1975-09-09T05:13:20Z", "ms": 179471600038.85458 }, "end": { "local": "1975-09-10T06:20:19+03:30", "utc": "1975-09-10T02:50:19Z", "ms": 179549419135.35883 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-09", "window": { "start": { "local": "1975-09-09T11:04:51+03:30", "utc": "1975-09-09T07:34:51Z", "ms": 179480090733.38727 }, "end": { "local": "1975-09-09T11:52:51+03:30", "utc": "1975-09-09T08:22:51Z", "ms": 179482970733.38727 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-10", "window": { "start": { "local": "1975-09-10T11:04:30+03:30", "utc": "1975-09-10T07:34:30Z", "ms": 179566470057.77087 }, "end": { "local": "1975-09-10T11:52:30+03:30", "utc": "1975-09-10T08:22:30Z", "ms": 179569350057.77087 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:43 on Tue 9 Sep to 06:20 on Wed 10 Sep.", "fact": "1975-09-09T05:13:20Z → 1975-09-10T02:50:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 9th, 11:05–11:53 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 8491 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Mashhad, 1975: Tuesday 9 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": "1975-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-09", "confidence": "determinate" } ], "quote": "In Mashhad, Ṛṣi Pañcamī 1975 falls on Tuesday 9 September. Pañcamī runs from 08:43 on Tue 9 Sep to 06:20 on Wed 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17051, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-09-10T06:20:19+03:30", "utc": "1975-09-10T02:50:19Z", "ms": 179549419135.35883 }, "end": { "local": "1975-09-11T04:38:39+03:30", "utc": "1975-09-11T01:08:39Z", "ms": 179629718912.19983 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-10T06:20:19+03:30", "utc": "1975-09-10T02:50:19Z", "ms": 179549419135.35883 }, "end": { "local": "1975-09-11T04:38:39+03:30", "utc": "1975-09-11T01:08:39Z", "ms": 179629718912.19983 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-10", "window": { "start": { "local": "1975-09-10T11:04:30+03:30", "utc": "1975-09-10T07:34:30Z", "ms": 179566470057.77087 }, "end": { "local": "1975-09-10T11:52:30+03:30", "utc": "1975-09-10T08:22:30Z", "ms": 179569350057.77087 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-11", "window": { "start": { "local": "1975-09-11T11:04:09+03:30", "utc": "1975-09-11T07:34:09Z", "ms": 179652849223.64417 }, "end": { "local": "1975-09-11T11:52:09+03:30", "utc": "1975-09-11T08:22:09Z", "ms": 179655729223.64417 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:20 on Wed 10 Sep to 04:39 on Thu 11 Sep.", "fact": "1975-09-10T02:50:19Z → 1975-09-11T01:08:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 10th, 11:04–11:52 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17051 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Mashhad, 1975: Wednesday 10 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": "1975-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-10", "confidence": "determinate" } ], "quote": "In Mashhad, Sūrya Ṣaṣṭhī (Bhādrapada) 1975 falls on Wednesday 10 September. Ṣaṣṭhī runs from 06:20 on Wed 10 Sep to 04:39 on Thu 11 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23130, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-09-11T04:38:39+03:30", "utc": "1975-09-11T01:08:39Z", "ms": 179629718912.19983 }, "end": { "local": "1975-09-12T03:41:04+03:30", "utc": "1975-09-12T00:11:04Z", "ms": 179712663646.06854 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-11T04:38:39+03:30", "utc": "1975-09-11T01:08:39Z", "ms": 179629718912.19983 }, "end": { "local": "1975-09-12T03:41:04+03:30", "utc": "1975-09-12T00:11:04Z", "ms": 179712663646.06854 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-11", "window": { "start": { "local": "1975-09-11T11:04:09+03:30", "utc": "1975-09-11T07:34:09Z", "ms": 179652849223.64417 }, "end": { "local": "1975-09-11T11:52:09+03:30", "utc": "1975-09-11T08:22:09Z", "ms": 179655729223.64417 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-12", "window": { "start": { "local": "1975-09-12T11:03:48+03:30", "utc": "1975-09-12T07:33:48Z", "ms": 179739228248.86694 }, "end": { "local": "1975-09-12T11:51:48+03:30", "utc": "1975-09-12T08:21:48Z", "ms": 179742108248.86694 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:39 on Thu 11 Sep to 03:41 on Fri 12 Sep.", "fact": "1975-09-11T01:08:39Z → 1975-09-12T00:11:04Z" }, { "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": "Saptamī 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23130 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Mashhad, 1975: Thursday 11 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": "1975-09-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-11", "confidence": "determinate" } ], "quote": "In Mashhad, Muktābharaṇa Vrata 1975 falls on Thursday 11 September. Saptamī runs from 04:39 on Thu 11 Sep to 03:41 on Fri 12 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26565, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-09-12T03:41:04+03:30", "utc": "1975-09-12T00:11:04Z", "ms": 179712663646.06854 }, "end": { "local": "1975-09-13T03:27:19+03:30", "utc": "1975-09-12T23:57:19Z", "ms": 179798239063.65863 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-12T03:41:04+03:30", "utc": "1975-09-12T00:11:04Z", "ms": 179712663646.06854 }, "end": { "local": "1975-09-13T03:27:19+03:30", "utc": "1975-09-12T23:57:19Z", "ms": 179798239063.65863 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-12", "window": { "start": { "local": "1975-09-12T11:03:48+03:30", "utc": "1975-09-12T07:33:48Z", "ms": 179739228248.86694 }, "end": { "local": "1975-09-12T11:51:48+03:30", "utc": "1975-09-12T08:21:48Z", "ms": 179742108248.86694 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-13", "window": { "start": { "local": "1975-09-13T11:03:27+03:30", "utc": "1975-09-13T07:33:27Z", "ms": 179825607152.45862 }, "end": { "local": "1975-09-13T11:51:27+03:30", "utc": "1975-09-13T08:21:27Z", "ms": 179828487152.45862 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:41 on Fri 12 Sep to 03:27 on Sat 13 Sep.", "fact": "1975-09-12T00:11:04Z → 1975-09-12T23:57:19Z" }, { "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": "Aṣṭamī 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: unstated → only-day · margin 26565 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Mashhad, 1975: Friday 12 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": "1975-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-12", "confidence": "determinate" } ], "quote": "In Mashhad, Rādhāṣṭamī 1975 falls on Friday 12 September. Aṣṭamī runs from 03:41 on Fri 12 Sep to 03:27 on Sat 13 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-09-16", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 990, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-09-15T04:56:57+03:30", "utc": "1975-09-15T01:26:57Z", "ms": 179976417455.82825 }, "end": { "local": "1975-09-16T06:28:35+03:30", "utc": "1975-09-16T02:58:35Z", "ms": 180068315065.10782 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-15T04:56:57+03:30", "utc": "1975-09-15T01:26:57Z", "ms": 179976417455.82825 }, "end": { "local": "1975-09-16T06:28:35+03:30", "utc": "1975-09-16T02:58:35Z", "ms": 180068315065.10782 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-09-15", "window": { "start": { "local": "1975-09-15T05:13:27+03:30", "utc": "1975-09-15T01:43:27Z", "ms": 179977407351.17023 }, "end": { "local": "1975-09-15T05:13:27+03:30", "utc": "1975-09-15T01:43:27Z", "ms": 179977407351.17023 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-09-16", "window": { "start": { "local": "1975-09-16T05:14:14+03:30", "utc": "1975-09-16T01:44:14Z", "ms": 180063854192.76596 }, "end": { "local": "1975-09-16T05:14:14+03:30", "utc": "1975-09-16T01:44:14Z", "ms": 180063854192.76596 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:57 on Mon 15 Sep to 06:29 on Tue 16 Sep.", "fact": "1975-09-15T01:26:57Z → 1975-09-16T02:58:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:13 on the 15th and 05:14 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is on the 16th.", "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 990 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Mashhad, 1975: Tuesday 16 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": "1975-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-16", "confidence": "determinate" } ], "quote": "In Mashhad, Parivartanī Ekādaśī 1975 falls on Tuesday 16 September. Ekādaśī runs from 04:57 on Mon 15 Sep to 06:29 on Tue 16 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-09-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9571, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-09-16T06:28:35+03:30", "utc": "1975-09-16T02:58:35Z", "ms": 180068315065.10782 }, "end": { "local": "1975-09-17T08:22:31+03:30", "utc": "1975-09-17T04:52:31Z", "ms": 180161550751.40027 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-16T06:28:35+03:30", "utc": "1975-09-16T02:58:35Z", "ms": 180068315065.10782 }, "end": { "local": "1975-09-17T08:22:31+03:30", "utc": "1975-09-17T04:52:31Z", "ms": 180161550751.40027 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-09-16", "window": { "start": { "local": "1975-09-16T11:02:23+03:30", "utc": "1975-09-16T07:32:23Z", "ms": 180084743337.14542 }, "end": { "local": "1975-09-16T11:50:23+03:30", "utc": "1975-09-16T08:20:23Z", "ms": 180087623337.14542 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-09-17", "window": { "start": { "local": "1975-09-17T11:02:02+03:30", "utc": "1975-09-17T07:32:02Z", "ms": 180171121960.77667 }, "end": { "local": "1975-09-17T11:50:02+03:30", "utc": "1975-09-17T08:20:02Z", "ms": 180174001960.77667 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:29 on Tue 16 Sep to 08:23 on Wed 17 Sep.", "fact": "1975-09-16T02:58:35Z → 1975-09-17T04:52:31Z" }, { "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": "Dvādaśī 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 9571 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Mashhad, 1975: Tuesday 16 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": "1975-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-16", "confidence": "determinate" } ], "quote": "In Mashhad, Vāmana Jayantī 1975 falls on Tuesday 16 September. Dvādaśī runs from 06:29 on Tue 16 Sep to 08:23 on Wed 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-09-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25380, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-09-17T08:22:31+03:30", "utc": "1975-09-17T04:52:31Z", "ms": 180161550751.40027 }, "end": { "local": "1975-09-18T10:32:33+03:30", "utc": "1975-09-18T07:02:33Z", "ms": 180255753112.96747 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-17T08:22:31+03:30", "utc": "1975-09-17T04:52:31Z", "ms": 180161550751.40027 }, "end": { "local": "1975-09-18T10:32:33+03:30", "utc": "1975-09-18T07:02:33Z", "ms": 180255753112.96747 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-09-17", "window": { "start": { "local": "1975-09-17T17:37:03+03:30", "utc": "1975-09-17T14:07:03Z", "ms": 180194822848.6754 }, "end": { "local": "1975-09-17T19:10:13+03:30", "utc": "1975-09-17T15:40:13Z", "ms": 180200412869.77493 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1975-09-18", "window": { "start": { "local": "1975-09-18T17:35:33+03:30", "utc": "1975-09-18T14:05:33Z", "ms": 180281133131.92523 }, "end": { "local": "1975-09-18T19:09:01+03:30", "utc": "1975-09-18T15:39:01Z", "ms": 180286741382.25156 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:23 on Wed 17 Sep to 10:33 on Thu 18 Sep.", "fact": "1975-09-17T04:52:31Z → 1975-09-18T07:02:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:10 on the 17th, 17:36–19:09 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 17th and 0 of 93 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25380 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Wednesday 17 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": "1975-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-17", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Wednesday 17 September. Trayodaśī runs from 08:23 on Wed 17 Sep to 10:33 on Thu 18 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-09-17", "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/1975/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10128, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-09-18T10:32:33+03:30", "utc": "1975-09-18T07:02:33Z", "ms": 180255753112.96747 }, "end": { "local": "1975-09-19T12:53:23+03:30", "utc": "1975-09-19T09:23:23Z", "ms": 180350602828.94873 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1975-09-18T10:32:33+03:30", "utc": "1975-09-18T07:02:33Z", "ms": 180255753112.96747 }, "end": { "local": "1975-09-19T12:53:23+03:30", "utc": "1975-09-19T09:23:23Z", "ms": 180350602828.94873 } }, "kaala": "udaya-3", "days": [ { "local_date": "1975-09-18", "window": { "start": { "local": "1975-09-18T05:15:48+03:30", "utc": "1975-09-18T01:45:48Z", "ms": 180236748006.9218 }, "end": { "local": "1975-09-18T07:43:45+03:30", "utc": "1975-09-18T04:13:45Z", "ms": 180245625031.9225 } }, "covered_min": 0, "window_min": 148, "qualifies": false }, { "local_date": "1975-09-19", "window": { "start": { "local": "1975-09-19T05:16:35+03:30", "utc": "1975-09-19T01:46:35Z", "ms": 180323195009.37256 }, "end": { "local": "1975-09-19T07:44:05+03:30", "utc": "1975-09-19T04:14:05Z", "ms": 180332044679.85077 } }, "covered_min": 147, "window_min": 147, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:33 on Thu 18 Sep to 12:53 on Fri 19 Sep.", "fact": "1975-09-18T07:02:33Z → 1975-09-19T09:23:23Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:16–07:44 on the 18th, 05:17–07:44 on the 19th.", "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 148 minutes on the 18th and 147 of 147 on the 19th.", "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 10128 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Mashhad, 1975: Friday 19 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": "1975-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-19", "confidence": "determinate" } ], "quote": "In Mashhad, Ananta Caturdaśī 1975 falls on Friday 19 September. Caturdaśī runs from 10:33 on Thu 18 Sep to 12:53 on Fri 19 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-09-24", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13319, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-09-23T22:30:14+03:30", "utc": "1975-09-23T19:00:14Z", "ms": 180730813691.91824 }, "end": { "local": "1975-09-25T00:29:12+03:30", "utc": "1975-09-24T20:59:12Z", "ms": 180824351582.99075 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-09-23T22:30:14+03:30", "utc": "1975-09-23T19:00:14Z", "ms": 180730813691.91824 }, "end": { "local": "1975-09-25T00:29:12+03:30", "utc": "1975-09-24T20:59:12Z", "ms": 180824351582.99075 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-09-23", "window": { "start": { "local": "1975-09-23T18:48:15+03:30", "utc": "1975-09-23T15:18:15Z", "ms": 180717494614.74316 }, "end": { "local": "1975-09-23T18:48:15+03:30", "utc": "1975-09-23T15:18:15Z", "ms": 180717494614.74316 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-09-24", "window": { "start": { "local": "1975-09-24T19:25:10+03:30", "utc": "1975-09-24T15:55:10Z", "ms": 180806110327.30014 }, "end": { "local": "1975-09-24T19:25:10+03:30", "utc": "1975-09-24T15:55:10Z", "ms": 180806110327.30014 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:30 on Tue 23 Sep to 00:29 on Thu 25 Sep.", "fact": "1975-09-23T19:00:14Z → 1975-09-24T20:59:12Z" }, { "step": "kaala", "text": "Moonrise is at 18:48 on the 23rd and 19:25 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13319 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Wednesday 24 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": "1975-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-24", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Wednesday 24 September. Caturthī runs from 22:30 on Tue 23 Sep to 00:29 on Thu 25 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-09-24", "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/1975/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21380, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-09-26T02:02:57+03:30", "utc": "1975-09-25T22:32:57Z", "ms": 180916376690.81198 }, "end": { "local": "1975-09-27T03:03:10+03:30", "utc": "1975-09-26T23:33:10Z", "ms": 181006390346.57108 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-09-26T02:02:57+03:30", "utc": "1975-09-25T22:32:57Z", "ms": 180916376690.81198 }, "end": { "local": "1975-09-27T03:03:10+03:30", "utc": "1975-09-26T23:33:10Z", "ms": 181006390346.57108 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-09-25", "window": { "start": { "local": "1975-09-25T20:06:37+03:30", "utc": "1975-09-25T16:36:37Z", "ms": 180894996882.93552 }, "end": { "local": "1975-09-25T20:06:37+03:30", "utc": "1975-09-25T16:36:37Z", "ms": 180894996882.93552 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-09-26", "window": { "start": { "local": "1975-09-26T20:53:21+03:30", "utc": "1975-09-26T17:23:21Z", "ms": 180984200654.29477 }, "end": { "local": "1975-09-26T20:53:21+03:30", "utc": "1975-09-26T17:23:21Z", "ms": 180984200654.29477 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:03 on Fri 26 Sep to 03:03 on Sat 27 Sep.", "fact": "1975-09-25T22:32:57Z → 1975-09-26T23:33:10Z" }, { "step": "kaala", "text": "Moonrise is at 20:07 on the 25th and 20:53 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21380 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Mashhad, 1975: Friday 26 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": "1975-09-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-26", "confidence": "determinate" } ], "quote": "In Mashhad, Candra Ṣaṣṭhī 1975 falls on Friday 26 September. Ṣaṣṭhī runs from 02:03 on Fri 26 Sep to 03:03 on Sat 27 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28802, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-09-28T03:22:48+03:30", "utc": "1975-09-27T23:52:48Z", "ms": 181093968410.7801 }, "end": { "local": "1975-09-29T02:57:11+03:30", "utc": "1975-09-28T23:27:11Z", "ms": 181178831443.14505 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-09-28T03:22:48+03:30", "utc": "1975-09-27T23:52:48Z", "ms": 181093968410.7801 }, "end": { "local": "1975-09-29T02:57:11+03:30", "utc": "1975-09-28T23:27:11Z", "ms": 181178831443.14505 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-09-27", "window": { "start": { "local": "1975-09-27T17:22:07+03:30", "utc": "1975-09-27T13:52:07Z", "ms": 181057926979.34894 }, "end": { "local": "1975-09-27T18:58:20+03:30", "utc": "1975-09-27T15:28:20Z", "ms": 181063699872.3625 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1975-09-28", "window": { "start": { "local": "1975-09-28T17:20:38+03:30", "utc": "1975-09-28T13:50:38Z", "ms": 181144238119.45303 }, "end": { "local": "1975-09-28T18:57:09+03:30", "utc": "1975-09-28T15:27:09Z", "ms": 181150029331.5005 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:23 on Sun 28 Sep to 02:57 on Mon 29 Sep.", "fact": "1975-09-27T23:52:48Z → 1975-09-28T23:27:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:22–18:58 on the 27th, 17:21–18:57 on the 28th.", "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 96 minutes on the 27th and 97 of 97 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28802 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Mashhad, 1975: Sunday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-28", "confidence": "determinate" } ], "quote": "In Mashhad, Jitāṣṭamī (Jitiya) 1975 falls on Sunday 28 September. Aṣṭamī runs from 03:23 on Sun 28 Sep to 02:57 on Mon 29 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15215, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-09-28T03:22:48+03:30", "utc": "1975-09-27T23:52:48Z", "ms": 181093968410.7801 }, "end": { "local": "1975-09-29T02:57:11+03:30", "utc": "1975-09-28T23:27:11Z", "ms": 181178831443.14505 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-09-28T03:22:48+03:30", "utc": "1975-09-27T23:52:48Z", "ms": 181093968410.7801 }, "end": { "local": "1975-09-29T02:57:11+03:30", "utc": "1975-09-28T23:27:11Z", "ms": 181178831443.14505 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-09-27", "window": { "start": { "local": "1975-09-27T21:45:44+03:30", "utc": "1975-09-27T18:15:44Z", "ms": 181073744324.36816 }, "end": { "local": "1975-09-27T21:45:44+03:30", "utc": "1975-09-27T18:15:44Z", "ms": 181073744324.36816 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-09-28", "window": { "start": { "local": "1975-09-28T22:43:37+03:30", "utc": "1975-09-28T19:13:37Z", "ms": 181163616522.53635 }, "end": { "local": "1975-09-28T22:43:37+03:30", "utc": "1975-09-28T19:13:37Z", "ms": 181163616522.53635 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:23 on Sun 28 Sep to 02:57 on Mon 29 Sep.", "fact": "1975-09-27T23:52:48Z → 1975-09-28T23:27:11Z" }, { "step": "kaala", "text": "Moonrise is at 21:46 on the 27th and 22:44 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15215 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Mashhad, 1975: Sunday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-09-28", "confidence": "determinate" } ], "quote": "In Mashhad, Mahālakṣmī Vrata Samāpana 1975 falls on Sunday 28 September. Aṣṭamī runs from 03:23 on Sun 28 Sep to 02:57 on Mon 29 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-10-01", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20312, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-09-30T23:47:38+03:30", "utc": "1975-09-30T20:17:38Z", "ms": 181340258454.35013 }, "end": { "local": "1975-10-01T21:10:32+03:30", "utc": "1975-10-01T17:40:32Z", "ms": 181417232234.07816 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-09-30T23:47:38+03:30", "utc": "1975-09-30T20:17:38Z", "ms": 181340258454.35013 }, "end": { "local": "1975-10-01T21:10:32+03:30", "utc": "1975-10-01T17:40:32Z", "ms": 181417232234.07816 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-10-01", "window": { "start": { "local": "1975-10-01T05:26:10+03:30", "utc": "1975-10-01T01:56:10Z", "ms": 181360569974.98276 }, "end": { "local": "1975-10-01T05:26:10+03:30", "utc": "1975-10-01T01:56:10Z", "ms": 181360569974.98276 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-10-02", "window": { "start": { "local": "1975-10-02T05:26:59+03:30", "utc": "1975-10-02T01:56:59Z", "ms": 181447019227.14365 }, "end": { "local": "1975-10-02T05:26:59+03:30", "utc": "1975-10-02T01:56:59Z", "ms": 181447019227.14365 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:48 on Tue 30 Sep to 21:11 on Wed 1 Oct.", "fact": "1975-09-30T20:17:38Z → 1975-10-01T17:40:32Z" }, { "step": "kaala", "text": "Sunrise is at 05:26 on the 1st and 05:27 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20312 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Mashhad, 1975: Wednesday 1 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": "1975-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-01", "confidence": "determinate" } ], "quote": "In Mashhad, Indirā Ekādaśī 1975 falls on Wednesday 1 October. Ekādaśī runs from 23:48 on Tue 30 Sep to 21:11 on Wed 1 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-10-01", "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/1975/pradosha-vrata?on=1975-10-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2770, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-10-02T18:00:55+03:30", "utc": "1975-10-02T14:30:55Z", "ms": 181492255367.92215 }, "end": { "local": "1975-10-03T14:27:56+03:30", "utc": "1975-10-03T10:57:56Z", "ms": 181565876102.04968 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-02T18:00:55+03:30", "utc": "1975-10-02T14:30:55Z", "ms": 181492255367.92215 }, "end": { "local": "1975-10-03T14:27:56+03:30", "utc": "1975-10-03T10:57:56Z", "ms": 181565876102.04968 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-10-02", "window": { "start": { "local": "1975-10-02T17:14:46+03:30", "utc": "1975-10-02T13:44:46Z", "ms": 181489485540.8963 }, "end": { "local": "1975-10-02T18:52:30+03:30", "utc": "1975-10-02T15:22:30Z", "ms": 181495349966.8726 } }, "covered_min": 52, "window_min": 98, "qualifies": true }, { "local_date": "1975-10-03", "window": { "start": { "local": "1975-10-03T17:13:18+03:30", "utc": "1975-10-03T13:43:18Z", "ms": 181575798257.31223 }, "end": { "local": "1975-10-03T18:51:21+03:30", "utc": "1975-10-03T15:21:21Z", "ms": 181581680957.2322 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:01 on Thu 2 Oct to 14:28 on Fri 3 Oct.", "fact": "1975-10-02T14:30:55Z → 1975-10-03T10:57:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:52 on the 2nd, 17:13–18:51 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 52 of 98 minutes on the 2nd and 0 of 98 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2770 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Thursday 2 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": "1975-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-02", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Thursday 2 October. Trayodaśī runs from 18:01 on Thu 2 Oct to 14:28 on Fri 3 Oct and covers 52 of 98 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-10-02", "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/1975/shivaratri?on=1975-10-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30542, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-10-03T14:27:56+03:30", "utc": "1975-10-03T10:57:56Z", "ms": 181565876102.04968 }, "end": { "local": "1975-10-04T10:41:48+03:30", "utc": "1975-10-04T07:11:48Z", "ms": 181638708004.30765 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-03T14:27:56+03:30", "utc": "1975-10-03T10:57:56Z", "ms": 181565876102.04968 }, "end": { "local": "1975-10-04T10:41:48+03:30", "utc": "1975-10-04T07:11:48Z", "ms": 181638708004.30765 } }, "kaala": "nishita", "days": [ { "local_date": "1975-10-03", "window": { "start": { "local": "1975-10-03T22:56:58+03:30", "utc": "1975-10-03T19:26:58Z", "ms": 181596418382.01215 }, "end": { "local": "1975-10-03T23:44:58+03:30", "utc": "1975-10-03T20:14:58Z", "ms": 181599298382.01215 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-10-04", "window": { "start": { "local": "1975-10-04T22:56:40+03:30", "utc": "1975-10-04T19:26:40Z", "ms": 181682799958.85568 }, "end": { "local": "1975-10-04T23:44:40+03:30", "utc": "1975-10-04T20:14:40Z", "ms": 181685679958.85568 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:28 on Fri 3 Oct to 10:42 on Sat 4 Oct.", "fact": "1975-10-03T10:57:56Z → 1975-10-04T07:11:48Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:57–23:45 on the 3rd, 22:57–23:45 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30542 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Friday 3 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": "1975-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-03", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Friday 3 October. Caturdaśī runs from 14:28 on Fri 3 Oct to 10:42 on Sat 4 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-10-03", "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/1975/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6526, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1975-10-04T10:41:48+03:30", "utc": "1975-10-04T07:11:48Z", "ms": 181638708004.30765 }, "end": { "local": "1975-10-05T06:53:17+03:30", "utc": "1975-10-05T03:23:17Z", "ms": 181711396764.88907 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-04T10:41:48+03:30", "utc": "1975-10-04T07:11:48Z", "ms": 181638708004.30765 }, "end": { "local": "1975-10-05T06:53:17+03:30", "utc": "1975-10-05T03:23:17Z", "ms": 181711396764.88907 } }, "kaala": "aparahna", "days": [ { "local_date": "1975-10-04", "window": { "start": { "local": "1975-10-04T12:30:34+03:30", "utc": "1975-10-04T09:00:34Z", "ms": 181645234226.3659 }, "end": { "local": "1975-10-04T14:51:13+03:30", "utc": "1975-10-04T11:21:13Z", "ms": 181653672799.58383 } }, "covered_min": 141, "window_min": 141, "qualifies": true }, { "local_date": "1975-10-05", "window": { "start": { "local": "1975-10-05T12:30:02+03:30", "utc": "1975-10-05T09:00:02Z", "ms": 181731602365.84964 }, "end": { "local": "1975-10-05T14:50:14+03:30", "utc": "1975-10-05T11:20:14Z", "ms": 181740013639.49634 } }, "covered_min": 0, "window_min": 140, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 10:42 on Sat 4 Oct to 06:53 on Sun 5 Oct.", "fact": "1975-10-04T07:11:48Z → 1975-10-05T03:23:17Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 12:31–14:51 on the 4th, 12:30–14:50 on the 5th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 141 of 141 minutes on the 4th and 0 of 140 on the 5th.", "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 6526 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Mashhad, 1975: Saturday 4 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": "1975-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-04", "confidence": "determinate" } ], "quote": "In Mashhad, Mahālaya Amāvāsyā 1975 falls on Saturday 4 October. Amāvasyā runs from 10:42 on Sat 4 Oct to 06:53 on Sun 5 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14560, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-10-05T06:53:17+03:30", "utc": "1975-10-05T03:23:17Z", "ms": 181711396764.88907 }, "end": { "local": "1975-10-06T03:13:12+03:30", "utc": "1975-10-05T23:43:12Z", "ms": 181784592229.3549 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-05T06:53:17+03:30", "utc": "1975-10-05T03:23:17Z", "ms": 181711396764.88907 }, "end": { "local": "1975-10-06T03:13:12+03:30", "utc": "1975-10-05T23:43:12Z", "ms": 181784592229.3549 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-10-05", "window": { "start": { "local": "1975-10-05T10:55:57+03:30", "utc": "1975-10-05T07:25:57Z", "ms": 181725956729.0263 }, "end": { "local": "1975-10-05T11:43:57+03:30", "utc": "1975-10-05T08:13:57Z", "ms": 181728836729.0263 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-10-06", "window": { "start": { "local": "1975-10-06T10:55:39+03:30", "utc": "1975-10-06T07:25:39Z", "ms": 181812338879.03906 }, "end": { "local": "1975-10-06T11:43:39+03:30", "utc": "1975-10-06T08:13:39Z", "ms": 181815218879.03906 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:53 on Sun 5 Oct to 03:13 on Mon 6 Oct.", "fact": "1975-10-05T03:23:17Z → 1975-10-05T23:43:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:56–11:44 on the 5th, 10:56–11:44 on the 6th.", "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 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14560 s" }, { "step": "ruling", "text": "Navarātrārambha, Mashhad, 1975: Sunday 5 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": "1975-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-05", "confidence": "determinate" } ], "quote": "In Mashhad, Navarātrārambha (Navratri) 1975 falls on Sunday 5 October. Pratipadā runs from 06:53 on Sun 5 Oct to 03:13 on Mon 6 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-10-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25238, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-10-07T20:59:27+03:30", "utc": "1975-10-07T17:29:27Z", "ms": 181934966619.25955 }, "end": { "local": "1975-10-08T18:43:42+03:30", "utc": "1975-10-08T15:13:42Z", "ms": 182013222267.63992 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-07T20:59:27+03:30", "utc": "1975-10-07T17:29:27Z", "ms": 181934966619.25955 }, "end": { "local": "1975-10-08T18:43:42+03:30", "utc": "1975-10-08T15:13:42Z", "ms": 182013222267.63992 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-10-07", "window": { "start": { "local": "1975-10-07T10:55:21+03:30", "utc": "1975-10-07T07:25:21Z", "ms": 181898721404.48148 }, "end": { "local": "1975-10-07T11:43:21+03:30", "utc": "1975-10-07T08:13:21Z", "ms": 181901601404.48148 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-10-08", "window": { "start": { "local": "1975-10-08T10:55:04+03:30", "utc": "1975-10-08T07:25:04Z", "ms": 181985104320.50266 }, "end": { "local": "1975-10-08T11:43:04+03:30", "utc": "1975-10-08T08:13:04Z", "ms": 181987984320.50266 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:59 on Tue 7 Oct to 18:44 on Wed 8 Oct.", "fact": "1975-10-07T17:29:27Z → 1975-10-08T15:13:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 7th, 10:55–11:43 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25238 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Wednesday 8 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": "1975-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-08", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Wednesday 8 October. Caturthī runs from 20:59 on Tue 7 Oct to 18:44 on Wed 8 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-10-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36349, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-10-10T16:25:30+03:30", "utc": "1975-10-10T12:55:30Z", "ms": 182177730084.3678 }, "end": { "local": "1975-10-11T16:27:19+03:30", "utc": "1975-10-11T12:57:19Z", "ms": 182264239183.91586 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-10T16:25:30+03:30", "utc": "1975-10-10T12:55:30Z", "ms": 182177730084.3678 }, "end": { "local": "1975-10-11T16:27:19+03:30", "utc": "1975-10-11T12:57:19Z", "ms": 182264239183.91586 } }, "kaala": "udaya-1", "days": [ { "local_date": "1975-10-10", "window": { "start": { "local": "1975-10-10T05:33:43+03:30", "utc": "1975-10-10T02:03:43Z", "ms": 182138622875.02863 }, "end": { "local": "1975-10-10T06:19:41+03:30", "utc": "1975-10-10T02:49:41Z", "ms": 182141381343.55325 } }, "covered_min": 0, "window_min": 46, "qualifies": false }, { "local_date": "1975-10-11", "window": { "start": { "local": "1975-10-11T05:34:35+03:30", "utc": "1975-10-11T02:04:35Z", "ms": 182225074598.33362 }, "end": { "local": "1975-10-11T06:20:24+03:30", "utc": "1975-10-11T02:50:24Z", "ms": 182227824062.02426 } }, "covered_min": 46, "window_min": 46, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 16:26 on Fri 10 Oct to 16:27 on Sat 11 Oct.", "fact": "1975-10-10T12:55:30Z → 1975-10-11T12:57:19Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:34–06:20 on the 10th, 05:35–06:20 on the 11th.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 46 minutes on the 10th and 46 of 46 on the 11th.", "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 36349 s" }, { "step": "ruling", "text": "Durgā Saptamī, Mashhad, 1975: Saturday 11 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": "1975-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-11", "confidence": "determinate" } ], "quote": "In Mashhad, Durgā Saptamī 1975 falls on Saturday 11 October. Saptamī runs from 16:26 on Fri 10 Oct to 16:27 on Sat 11 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17104, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-10-11T16:27:19+03:30", "utc": "1975-10-11T12:57:19Z", "ms": 182264239183.91586 }, "end": { "local": "1975-10-12T17:13:48+03:30", "utc": "1975-10-12T13:43:48Z", "ms": 182353427692.96204 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-11T16:27:19+03:30", "utc": "1975-10-11T12:57:19Z", "ms": 182264239183.91586 }, "end": { "local": "1975-10-12T17:13:48+03:30", "utc": "1975-10-12T13:43:48Z", "ms": 182353427692.96204 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-10-11", "window": { "start": { "local": "1975-10-11T10:54:16+03:30", "utc": "1975-10-11T07:24:16Z", "ms": 182244255576.01337 }, "end": { "local": "1975-10-11T11:42:16+03:30", "utc": "1975-10-11T08:12:16Z", "ms": 182247135576.01337 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-10-12", "window": { "start": { "local": "1975-10-12T10:54:00+03:30", "utc": "1975-10-12T07:24:00Z", "ms": 182330640222.69153 }, "end": { "local": "1975-10-12T11:42:00+03:30", "utc": "1975-10-12T08:12:00Z", "ms": 182333520222.69153 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 16:27 on Sat 11 Oct to 17:14 on Sun 12 Oct.", "fact": "1975-10-11T12:57:19Z → 1975-10-12T13:43:48Z" }, { "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": "Aṣṭamī 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17104 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Mashhad, 1975: Sunday 12 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": "1975-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-12", "confidence": "determinate" } ], "quote": "In Mashhad, Mahāṣṭamī (Durga Ashtami) 1975 falls on Sunday 12 October. Aṣṭamī runs from 16:27 on Sat 11 Oct to 17:14 on Sun 12 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19907, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1975-10-12T17:13:48+03:30", "utc": "1975-10-12T13:43:48Z", "ms": 182353427692.96204 }, "end": { "local": "1975-10-13T18:38:59+03:30", "utc": "1975-10-13T15:08:59Z", "ms": 182444939192.97775 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-12T17:13:48+03:30", "utc": "1975-10-12T13:43:48Z", "ms": 182353427692.96204 }, "end": { "local": "1975-10-13T18:38:59+03:30", "utc": "1975-10-13T15:08:59Z", "ms": 182444939192.97775 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-10-12", "window": { "start": { "local": "1975-10-12T10:54:00+03:30", "utc": "1975-10-12T07:24:00Z", "ms": 182330640222.69153 }, "end": { "local": "1975-10-12T11:42:00+03:30", "utc": "1975-10-12T08:12:00Z", "ms": 182333520222.69153 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-10-13", "window": { "start": { "local": "1975-10-13T10:53:45+03:30", "utc": "1975-10-13T07:23:45Z", "ms": 182417025348.07086 }, "end": { "local": "1975-10-13T11:41:45+03:30", "utc": "1975-10-13T08:11:45Z", "ms": 182419905348.07086 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 17:14 on Sun 12 Oct to 18:39 on Mon 13 Oct.", "fact": "1975-10-12T13:43:48Z → 1975-10-13T15:08:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 12th, 10:54–11:42 on the 13th.", "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 12th and 48 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 19907 s" }, { "step": "ruling", "text": "Mahānavamī, Mashhad, 1975: Monday 13 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": "1975-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-13", "confidence": "determinate" } ], "quote": "In Mashhad, Mahānavamī 1975 falls on Monday 13 October. Navamī runs from 17:14 on Sun 12 Oct to 18:39 on Mon 13 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5987, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1975-10-13T18:38:59+03:30", "utc": "1975-10-13T15:08:59Z", "ms": 182444939192.97775 }, "end": { "local": "1975-10-14T20:34:37+03:30", "utc": "1975-10-14T17:04:37Z", "ms": 182538276713.06235 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1975-10-13T18:38:59+03:30", "utc": "1975-10-13T15:08:59Z", "ms": 182444939192.97775 }, "end": { "local": "1975-10-14T12:51:01+03:30", "utc": "1975-10-14T09:21:01Z", "ms": 182510461138.48383 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1975-10-13T10:31:51+03:30", "utc": "1975-10-13T07:01:51Z", "ms": 182415710983.404 }, "end": { "local": "1975-10-14T12:51:01+03:30", "utc": "1975-10-14T09:21:01Z", "ms": 182510461138.48383 } } }, "kaala": "daytime", "days": [ { "local_date": "1975-10-13", "window": { "start": { "local": "1975-10-13T05:36:19+03:30", "utc": "1975-10-13T02:06:19Z", "ms": 182397978948.09833 }, "end": { "local": "1975-10-13T16:59:12+03:30", "utc": "1975-10-13T13:29:12Z", "ms": 182438951748.0434 } }, "covered_min": 0, "window_min": 683, "qualifies": false }, { "local_date": "1975-10-14", "window": { "start": { "local": "1975-10-14T05:37:12+03:30", "utc": "1975-10-14T02:07:12Z", "ms": 182484431588.60156 }, "end": { "local": "1975-10-14T16:57:50+03:30", "utc": "1975-10-14T13:27:50Z", "ms": 182525270354.65854 } }, "covered_min": 434, "window_min": 681, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 18:39 on Mon 13 Oct to 20:35 on Tue 14 Oct, and Śravaṇa from 10:32 on Mon 13 Oct to 12:51 on Tue 14 Oct. They are together from 18:39 on Mon 13 Oct to 12:51 on Tue 14 Oct.", "fact": "1975-10-13T15:08:59Z → 1975-10-14T09:21:01Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 05:36–16:59 on the 13th, 05:37–16:58 on the 14th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 0 of 683 minutes on the 13th and 434 of 681 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5987 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Mashhad, 1975: Tuesday 14 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": "1975-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-14", "confidence": "determinate" } ], "quote": "In Mashhad, Vijayā Daśamī (Dussehra) 1975 falls on Tuesday 14 October. Daśamī runs from 18:39 on Mon 13 Oct to 20:35 on Tue 14 Oct and is with Śravaṇa in the day time that day, for 434 minutes.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-10-15", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24465, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-10-14T20:34:37+03:30", "utc": "1975-10-14T17:04:37Z", "ms": 182538276713.06235 }, "end": { "local": "1975-10-15T22:51:13+03:30", "utc": "1975-10-15T19:21:13Z", "ms": 182632872653.93546 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-14T20:34:37+03:30", "utc": "1975-10-14T17:04:37Z", "ms": 182538276713.06235 }, "end": { "local": "1975-10-15T22:51:13+03:30", "utc": "1975-10-15T19:21:13Z", "ms": 182632872653.93546 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-10-15", "window": { "start": { "local": "1975-10-15T05:38:05+03:30", "utc": "1975-10-15T02:08:05Z", "ms": 182570884549.15402 }, "end": { "local": "1975-10-15T05:38:05+03:30", "utc": "1975-10-15T02:08:05Z", "ms": 182570884549.15402 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-10-16", "window": { "start": { "local": "1975-10-16T05:38:58+03:30", "utc": "1975-10-16T02:08:58Z", "ms": 182657337836.9283 }, "end": { "local": "1975-10-16T05:38:58+03:30", "utc": "1975-10-16T02:08:58Z", "ms": 182657337836.9283 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:35 on Tue 14 Oct to 22:51 on Wed 15 Oct.", "fact": "1975-10-14T17:04:37Z → 1975-10-15T19:21:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:38 on the 15th and 05:39 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24465 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Mashhad, 1975: Wednesday 15 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": "1975-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-15", "confidence": "determinate" } ], "quote": "In Mashhad, Pāśāṅkuśā Ekādaśī 1975 falls on Wednesday 15 October. Ekādaśī runs from 20:35 on Tue 14 Oct to 22:51 on Wed 15 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-10-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-10-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24135, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-10-17T01:19:22+03:30", "utc": "1975-10-16T21:49:22Z", "ms": 182728162034.21753 }, "end": { "local": "1975-10-18T03:50:38+03:30", "utc": "1975-10-18T00:20:38Z", "ms": 182823638342.22363 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1975-10-17T01:19:22+03:30", "utc": "1975-10-16T21:49:22Z", "ms": 182728162034.21753 }, "end": { "local": "1975-10-18T03:50:38+03:30", "utc": "1975-10-18T00:20:38Z", "ms": 182823638342.22363 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-10-16", "window": { "start": { "local": "1975-10-16T16:55:10+03:30", "utc": "1975-10-16T13:25:10Z", "ms": 182697909747.9452 }, "end": { "local": "1975-10-16T18:37:07+03:30", "utc": "1975-10-16T15:07:07Z", "ms": 182704027309.40637 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "1975-10-17", "window": { "start": { "local": "1975-10-17T16:53:51+03:30", "utc": "1975-10-17T13:23:51Z", "ms": 182784230600.2815 }, "end": { "local": "1975-10-17T18:36:06+03:30", "utc": "1975-10-17T15:06:06Z", "ms": 182790365909.81226 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:19 on Fri 17 Oct to 03:51 on Sat 18 Oct.", "fact": "1975-10-16T21:49:22Z → 1975-10-18T00:20:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:55–18:37 on the 16th, 16:54–18:36 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 102 minutes on the 16th and 102 of 102 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24135 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Friday 17 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": "1975-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-17", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Friday 17 October. Trayodaśī runs from 01:19 on Fri 17 Oct to 03:51 on Sat 18 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-10-17", "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/1975/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18001, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-10-23T13:46:24+03:30", "utc": "1975-10-23T10:16:24Z", "ms": 183291384454.46375 }, "end": { "local": "1975-10-24T14:41:56+03:30", "utc": "1975-10-24T11:11:56Z", "ms": 183381115648.25226 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-10-23T13:46:24+03:30", "utc": "1975-10-23T10:16:24Z", "ms": 183291384454.46375 }, "end": { "local": "1975-10-24T14:41:56+03:30", "utc": "1975-10-24T11:11:56Z", "ms": 183381115648.25226 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-10-23", "window": { "start": { "local": "1975-10-23T18:51:29+03:30", "utc": "1975-10-23T15:21:29Z", "ms": 183309688846.94818 }, "end": { "local": "1975-10-23T18:51:29+03:30", "utc": "1975-10-23T15:21:29Z", "ms": 183309688846.94818 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-10-24", "window": { "start": { "local": "1975-10-24T19:41:57+03:30", "utc": "1975-10-24T16:11:57Z", "ms": 183399116767.98846 }, "end": { "local": "1975-10-24T19:41:57+03:30", "utc": "1975-10-24T16:11:57Z", "ms": 183399116767.98846 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:46 on Thu 23 Oct to 14:42 on Fri 24 Oct.", "fact": "1975-10-23T10:16:24Z → 1975-10-24T11:11:56Z" }, { "step": "kaala", "text": "Moonrise is at 18:51 on the 23rd and 19:42 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18001 s" }, { "step": "ruling", "text": "Karaka Caturthī, Mashhad, 1975: Thursday 23 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": "1975-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-23", "confidence": "determinate" } ], "quote": "In Mashhad, Karaka Caturthī (Karwa Chauth) 1975 falls on Thursday 23 October. Caturthī runs from 13:46 on Thu 23 Oct to 14:42 on Fri 24 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-10-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18001, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-10-23T13:46:24+03:30", "utc": "1975-10-23T10:16:24Z", "ms": 183291384454.46375 }, "end": { "local": "1975-10-24T14:41:56+03:30", "utc": "1975-10-24T11:11:56Z", "ms": 183381115648.25226 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-10-23T13:46:24+03:30", "utc": "1975-10-23T10:16:24Z", "ms": 183291384454.46375 }, "end": { "local": "1975-10-24T14:41:56+03:30", "utc": "1975-10-24T11:11:56Z", "ms": 183381115648.25226 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-10-23", "window": { "start": { "local": "1975-10-23T18:51:29+03:30", "utc": "1975-10-23T15:21:29Z", "ms": 183309688846.94818 }, "end": { "local": "1975-10-23T18:51:29+03:30", "utc": "1975-10-23T15:21:29Z", "ms": 183309688846.94818 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-10-24", "window": { "start": { "local": "1975-10-24T19:41:57+03:30", "utc": "1975-10-24T16:11:57Z", "ms": 183399116767.98846 }, "end": { "local": "1975-10-24T19:41:57+03:30", "utc": "1975-10-24T16:11:57Z", "ms": 183399116767.98846 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:46 on Thu 23 Oct to 14:42 on Fri 24 Oct.", "fact": "1975-10-23T10:16:24Z → 1975-10-24T11:11:56Z" }, { "step": "kaala", "text": "Moonrise is at 18:51 on the 23rd and 19:42 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18001 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Thursday 23 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": "1975-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-23", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Thursday 23 October. Caturthī runs from 13:46 on Thu 23 Oct to 14:42 on Fri 24 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-10-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30434, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-10-27T14:12:56+03:30", "utc": "1975-10-27T10:42:56Z", "ms": 183638575558.96854 }, "end": { "local": "1975-10-28T12:51:52+03:30", "utc": "1975-10-28T09:21:52Z", "ms": 183720112052.04376 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-10-27T14:12:56+03:30", "utc": "1975-10-27T10:42:56Z", "ms": 183638575558.96854 }, "end": { "local": "1975-10-28T12:51:52+03:30", "utc": "1975-10-28T09:21:52Z", "ms": 183720112052.04376 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-10-27", "window": { "start": { "local": "1975-10-27T22:40:09+03:30", "utc": "1975-10-27T19:10:09Z", "ms": 183669009466.8624 }, "end": { "local": "1975-10-27T22:40:09+03:30", "utc": "1975-10-27T19:10:09Z", "ms": 183669009466.8624 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-10-28", "window": { "start": { "local": "1975-10-28T23:45:30+03:30", "utc": "1975-10-28T20:15:30Z", "ms": 183759330239.39975 }, "end": { "local": "1975-10-28T23:45:30+03:30", "utc": "1975-10-28T20:15:30Z", "ms": 183759330239.39975 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 14:13 on Mon 27 Oct to 12:52 on Tue 28 Oct.", "fact": "1975-10-27T10:42:56Z → 1975-10-28T09:21:52Z" }, { "step": "kaala", "text": "Moonrise is at 22:40 on the 27th and 23:46 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī 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: paraviddha → only-day · margin 30434 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Mashhad, 1975: Monday 27 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": "1975-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-27", "confidence": "determinate" } ], "quote": "In Mashhad, Ahoyī Aṣṭamī 1975 falls on Monday 27 October. Aṣṭamī runs from 14:13 on Mon 27 Oct to 12:52 on Tue 28 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-10-30", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 878, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-10-30T08:29:58+03:30", "utc": "1975-10-30T04:59:58Z", "ms": 183877198259.8409 }, "end": { "local": "1975-10-31T05:38:22+03:30", "utc": "1975-10-31T02:08:22Z", "ms": 183953301965.06192 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-10-30T08:29:58+03:30", "utc": "1975-10-30T04:59:58Z", "ms": 183877198259.8409 }, "end": { "local": "1975-10-31T05:38:22+03:30", "utc": "1975-10-31T02:08:22Z", "ms": 183953301965.06192 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-10-30", "window": { "start": { "local": "1975-10-30T05:52:01+03:30", "utc": "1975-10-30T02:22:01Z", "ms": 183867720997.43274 }, "end": { "local": "1975-10-30T05:52:01+03:30", "utc": "1975-10-30T02:22:01Z", "ms": 183867720997.43274 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-10-31", "window": { "start": { "local": "1975-10-31T05:53:00+03:30", "utc": "1975-10-31T02:23:00Z", "ms": 183954179605.6162 }, "end": { "local": "1975-10-31T05:53:00+03:30", "utc": "1975-10-31T02:23:00Z", "ms": 183954179605.6162 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:30 on Thu 30 Oct to 05:38 on Fri 31 Oct.", "fact": "1975-10-30T04:59:58Z → 1975-10-31T02:08:22Z" }, { "step": "kaala", "text": "Sunrise is at 05:52 on the 30th and 05:53 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is not on the 31st.", "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 878 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Mashhad, 1975: Thursday 30 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": "1975-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-30", "confidence": "determinate" } ], "quote": "In Mashhad, Ramā Ekādaśī 1975 falls on Thursday 30 October. Ekādaśī runs from 08:30 on Thu 30 Oct to 05:38 on Fri 31 Oct, and is current at sunrise on neither day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-10-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29113, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-10-31T05:38:22+03:30", "utc": "1975-10-31T02:08:22Z", "ms": 183953301965.06192 }, "end": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-10-31T05:38:22+03:30", "utc": "1975-10-31T02:08:22Z", "ms": 183953301965.06192 }, "end": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-10-30", "window": { "start": { "local": "1975-10-30T16:38:08+03:30", "utc": "1975-10-30T13:08:08Z", "ms": 183906488332.43393 }, "end": { "local": "1975-10-30T18:24:07+03:30", "utc": "1975-10-30T14:54:07Z", "ms": 183912847168.85825 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1975-10-31", "window": { "start": { "local": "1975-10-31T16:37:04+03:30", "utc": "1975-10-31T13:07:04Z", "ms": 183992823719.80005 }, "end": { "local": "1975-10-31T18:23:19+03:30", "utc": "1975-10-31T14:53:19Z", "ms": 183999199028.2798 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:38 on Fri 31 Oct to 02:29 on Sat 1 Nov.", "fact": "1975-10-31T02:08:22Z → 1975-10-31T22:58:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:38–18:24 on the 30th, 16:37–18:23 on the 31st.", "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 106 minutes on the 30th and 106 of 106 on the 31st.", "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 29113 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Mashhad, 1975: Friday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1975-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-10-31", "confidence": "determinate" } ], "quote": "In Mashhad, Govatsa Dvādaśī (Vasu Baras) 1975 falls on Friday 31 October. Dvādaśī runs from 05:38 on Fri 31 Oct to 02:29 on Sat 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17167, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 }, "end": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 }, "end": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-10-31", "window": { "start": { "local": "1975-10-31T16:37:04+03:30", "utc": "1975-10-31T13:07:04Z", "ms": 183992823719.80005 }, "end": { "local": "1975-10-31T18:23:19+03:30", "utc": "1975-10-31T14:53:19Z", "ms": 183999199028.2798 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1975-11-01", "window": { "start": { "local": "1975-11-01T16:36:00+03:30", "utc": "1975-11-01T13:06:00Z", "ms": 184079160395.13312 }, "end": { "local": "1975-11-01T18:22:32+03:30", "utc": "1975-11-01T14:52:32Z", "ms": 184085552044.38394 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:29 on Sat 1 Nov to 23:09 on Sat 1 Nov.", "fact": "1975-10-31T22:58:32Z → 1975-11-01T19:38:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:37–18:23 on the 31st, 16:36–18:23 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 31st and 107 of 107 on the 1st.", "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 17167 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Mashhad, 1975: Saturday 1 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": "1975-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-01", "confidence": "determinate" } ], "quote": "In Mashhad, Yama Dīpadāna 1975 falls on Saturday 1 November. Trayodaśī runs from 02:29 on Sat 1 Nov to 23:09 on Sat 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-11-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17167, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 }, "end": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-01T02:28:32+03:30", "utc": "1975-10-31T22:58:32Z", "ms": 184028312106.56 }, "end": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-10-31", "window": { "start": { "local": "1975-10-31T16:37:04+03:30", "utc": "1975-10-31T13:07:04Z", "ms": 183992823719.80005 }, "end": { "local": "1975-10-31T18:23:19+03:30", "utc": "1975-10-31T14:53:19Z", "ms": 183999199028.2798 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1975-11-01", "window": { "start": { "local": "1975-11-01T16:36:00+03:30", "utc": "1975-11-01T13:06:00Z", "ms": 184079160395.13312 }, "end": { "local": "1975-11-01T18:22:32+03:30", "utc": "1975-11-01T14:52:32Z", "ms": 184085552044.38394 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:29 on Sat 1 Nov to 23:09 on Sat 1 Nov.", "fact": "1975-10-31T22:58:32Z → 1975-11-01T19:38:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:37–18:23 on the 31st, 16:36–18:23 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 31st and 107 of 107 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17167 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Saturday 1 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": "1975-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-01", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Saturday 1 November. Trayodaśī runs from 02:29 on Sat 1 Nov to 23:09 on Sat 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-11-01", "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/1975/shivaratri?on=1975-11-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1029, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "end": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "end": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 } }, "kaala": "nishita", "days": [ { "local_date": "1975-11-01", "window": { "start": { "local": "1975-11-01T22:51:29+03:30", "utc": "1975-11-01T19:21:29Z", "ms": 184101689079.82367 }, "end": { "local": "1975-11-01T23:39:29+03:30", "utc": "1975-11-01T20:09:29Z", "ms": 184104569079.82367 } }, "covered_min": 31, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-02", "window": { "start": { "local": "1975-11-02T22:51:28+03:30", "utc": "1975-11-02T19:21:28Z", "ms": 184188087833.61774 }, "end": { "local": "1975-11-02T23:39:28+03:30", "utc": "1975-11-02T20:09:28Z", "ms": 184190967833.61774 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:09 on Sat 1 Nov to 19:48 on Sun 2 Nov.", "fact": "1975-11-01T19:38:39Z → 1975-11-02T16:17:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:51–23:39 on the 1st, 22:51–23:39 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 31 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1029 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Saturday 1 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": "1975-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-01", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Saturday 1 November. Caturdaśī runs from 23:09 on Sat 1 Nov to 19:48 on Sun 2 Nov and covers 31 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-11-01", "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/1975/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17988, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "end": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-01T23:08:39+03:30", "utc": "1975-11-01T19:38:39Z", "ms": 184102718559.89685 }, "end": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 } }, "kaala": "arunodaya", "days": [ { "local_date": "1975-11-02", "window": { "start": { "local": "1975-11-02T04:08:26+03:30", "utc": "1975-11-02T00:38:26Z", "ms": 184120706115.2634 }, "end": { "local": "1975-11-02T05:54:58+03:30", "utc": "1975-11-02T02:24:58Z", "ms": 184127097764.51422 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T04:09:09+03:30", "utc": "1975-11-03T00:39:09Z", "ms": 184207149427.9031 }, "end": { "local": "1975-11-03T05:55:57+03:30", "utc": "1975-11-03T02:25:57Z", "ms": 184213557280.3705 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:09 on Sat 1 Nov to 19:48 on Sun 2 Nov.", "fact": "1975-11-01T19:38:39Z → 1975-11-02T16:17:37Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:08–05:55 on the 2nd, 04:09–05:56 on the 3rd.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 107 of 107 minutes on the 2nd and 0 of 107 on the 3rd.", "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 17988 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Mashhad, 1975: Sunday 2 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": "1975-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-02", "confidence": "determinate" } ], "quote": "In Mashhad, Naraka Caturdaśī (Choti Diwali) 1975 falls on Sunday 2 November. Caturdaśī runs from 23:09 on Sat 1 Nov to 19:48 on Sun 2 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11031, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "end": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "end": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 } }, "kaala": "nishita", "days": [ { "local_date": "1975-11-02", "window": { "start": { "local": "1975-11-02T22:51:28+03:30", "utc": "1975-11-02T19:21:28Z", "ms": 184188087833.61774 }, "end": { "local": "1975-11-02T23:39:28+03:30", "utc": "1975-11-02T20:09:28Z", "ms": 184190967833.61774 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T22:51:27+03:30", "utc": "1975-11-03T19:21:27Z", "ms": 184274487391.28668 }, "end": { "local": "1975-11-03T23:39:27+03:30", "utc": "1975-11-03T20:09:27Z", "ms": 184277367391.28668 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 19:48 on Sun 2 Nov to 16:35 on Mon 3 Nov.", "fact": "1975-11-02T16:17:37Z → 1975-11-03T13:04:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:51–23:39 on the 2nd, 22:51–23:39 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11031 s" }, { "step": "ruling", "text": "Kālī Pūjā, Mashhad, 1975: Sunday 2 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": "1975-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-02", "confidence": "determinate" } ], "quote": "In Mashhad, Kālī Pūjā 1975 falls on Sunday 2 November. Amāvasyā runs from 19:48 on Sun 2 Nov to 16:35 on Mon 3 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-03", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 48, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "end": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-02T19:47:37+03:30", "utc": "1975-11-02T16:17:37Z", "ms": 184177056667.1634 }, "end": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-11-02", "window": { "start": { "local": "1975-11-02T16:34:58+03:30", "utc": "1975-11-02T13:04:58Z", "ms": 184165498386.865 }, "end": { "local": "1975-11-02T18:21:46+03:30", "utc": "1975-11-02T14:51:46Z", "ms": 184171906239.3324 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T16:33:58+03:30", "utc": "1975-11-03T13:03:58Z", "ms": 184251837722.33142 }, "end": { "local": "1975-11-03T18:21:02+03:30", "utc": "1975-11-03T14:51:02Z", "ms": 184258261634.05283 } }, "covered_min": 1, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 19:48 on Sun 2 Nov to 16:35 on Mon 3 Nov.", "fact": "1975-11-02T16:17:37Z → 1975-11-03T13:04:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:35–18:22 on the 2nd, 16:34–18:21 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 107 minutes on the 2nd and 1 of 107 on the 3rd.", "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 48 s < 300 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Mashhad, 1975: Monday 3 November.", "fact": "confidence: boundary (margin)" } ], "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": "1975-11-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-03", "confidence": "boundary" } ], "quote": "In Mashhad, Lakṣmī Pūjā (Diwali) 1975 falls on Monday 3 November. Amāvasyā runs from 19:48 on Sun 2 Nov to 16:35 on Mon 3 Nov and covers 1 of 107 minutes of pradoṣa that evening. It is 0 min 48 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-03", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 48, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T16:33:58+03:30", "utc": "1975-11-03T13:03:58Z", "ms": 184251837722.33142 }, "end": { "local": "1975-11-03T18:21:02+03:30", "utc": "1975-11-03T14:51:02Z", "ms": 184258261634.05283 } }, "covered_min": 106, "window_min": 107, "qualifies": true }, { "local_date": "1975-11-04", "window": { "start": { "local": "1975-11-04T16:32:58+03:30", "utc": "1975-11-04T13:02:58Z", "ms": 184338178428.325 }, "end": { "local": "1975-11-04T18:20:18+03:30", "utc": "1975-11-04T14:50:18Z", "ms": 184344618248.78177 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov.", "fact": "1975-11-03T13:04:46Z → 1975-11-04T10:09:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:34–18:21 on the 3rd, 16:33–18:20 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 106 of 107 minutes on the 3rd and 0 of 107 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: unstated → only-day · margin 48 s < 300 s" }, { "step": "ruling", "text": "Bali Pūjā, Mashhad, 1975: Monday 3 November.", "fact": "confidence: boundary (margin)" } ], "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": "1975-11-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-03", "confidence": "boundary" } ], "quote": "In Mashhad, Bali Pūjā 1975 falls on Monday 3 November. Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov and covers 106 of 107 minutes of pradoṣa that evening. It is 0 min 48 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7231, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T10:50:58+03:30", "utc": "1975-11-03T07:20:58Z", "ms": 184231257501.35095 }, "end": { "local": "1975-11-03T11:38:58+03:30", "utc": "1975-11-03T08:08:58Z", "ms": 184234137501.35095 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-11-04", "window": { "start": { "local": "1975-11-04T10:50:58+03:30", "utc": "1975-11-04T07:20:58Z", "ms": 184317657744.28345 }, "end": { "local": "1975-11-04T11:38:58+03:30", "utc": "1975-11-04T08:08:58Z", "ms": 184320537744.28345 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov.", "fact": "1975-11-03T13:04:46Z → 1975-11-04T10:09:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 3rd, 10:51–11:39 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7231 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Mashhad, 1975: Tuesday 4 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": "1975-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-04", "confidence": "determinate" } ], "quote": "In Mashhad, Govardhana Pūjā 1975 falls on Tuesday 4 November. Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15031, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-03T16:34:46+03:30", "utc": "1975-11-03T13:04:46Z", "ms": 184251885972.5828 }, "end": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 } }, "kaala": "purvahna", "days": [ { "local_date": "1975-11-03", "window": { "start": { "local": "1975-11-03T05:55:57+03:30", "utc": "1975-11-03T02:25:57Z", "ms": 184213557280.3705 }, "end": { "local": "1975-11-03T09:28:37+03:30", "utc": "1975-11-03T05:58:37Z", "ms": 184226317427.69083 } }, "covered_min": 0, "window_min": 213, "qualifies": false }, { "local_date": "1975-11-04", "window": { "start": { "local": "1975-11-04T05:56:57+03:30", "utc": "1975-11-04T02:26:57Z", "ms": 184300017060.2419 }, "end": { "local": "1975-11-04T09:28:58+03:30", "utc": "1975-11-04T05:58:58Z", "ms": 184312737516.26962 } }, "covered_min": 212, "window_min": 212, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov.", "fact": "1975-11-03T13:04:46Z → 1975-11-04T10:09:29Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:56–09:29 on the 3rd, 05:57–09:29 on the 4th.", "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 213 minutes on the 3rd and 212 of 212 on the 4th.", "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 15031 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Mashhad, 1975: Tuesday 4 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": "1975-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-04", "confidence": "determinate" } ], "quote": "In Mashhad, Dyūta Pratipad 1975 falls on Tuesday 4 November. Pratipadā runs from 16:35 on Mon 3 Nov to 13:39 on Tue 4 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1187, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 }, "end": { "local": "1975-11-05T11:10:46+03:30", "utc": "1975-11-05T07:40:46Z", "ms": 184405246091.99738 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-04T13:39:29+03:30", "utc": "1975-11-04T10:09:29Z", "ms": 184327768804.3975 }, "end": { "local": "1975-11-05T11:10:46+03:30", "utc": "1975-11-05T07:40:46Z", "ms": 184405246091.99738 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-04", "window": { "start": { "local": "1975-11-04T10:50:58+03:30", "utc": "1975-11-04T07:20:58Z", "ms": 184317657744.28345 }, "end": { "local": "1975-11-04T11:38:58+03:30", "utc": "1975-11-04T08:08:58Z", "ms": 184320537744.28345 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-11-05", "window": { "start": { "local": "1975-11-05T10:50:59+03:30", "utc": "1975-11-05T07:20:59Z", "ms": 184404058806.73715 }, "end": { "local": "1975-11-05T11:38:59+03:30", "utc": "1975-11-05T08:08:59Z", "ms": 184406938806.73715 } }, "covered_min": 20, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 13:39 on Tue 4 Nov to 11:11 on Wed 5 Nov.", "fact": "1975-11-04T10:09:29Z → 1975-11-05T07:40:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 4th, 10:51–11:39 on the 5th.", "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 4th and 20 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1187 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Mashhad, 1975: Wednesday 5 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": "1975-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-05", "confidence": "determinate" } ], "quote": "In Mashhad, Yama Dvitīyā (Bhai Dooj) 1975 falls on Wednesday 5 November. Dvitīyā runs from 13:39 on Tue 4 Nov to 11:11 on Wed 5 Nov and covers 20 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5653, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-11-06T09:16:47+03:30", "utc": "1975-11-06T05:46:47Z", "ms": 184484807335.65155 }, "end": { "local": "1975-11-07T08:04:12+03:30", "utc": "1975-11-07T04:34:12Z", "ms": 184566852489.6241 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-06T09:16:47+03:30", "utc": "1975-11-06T05:46:47Z", "ms": 184484807335.65155 }, "end": { "local": "1975-11-07T08:04:12+03:30", "utc": "1975-11-07T04:34:12Z", "ms": 184566852489.6241 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-06", "window": { "start": { "local": "1975-11-06T10:51:01+03:30", "utc": "1975-11-06T07:21:01Z", "ms": 184490460690.67938 }, "end": { "local": "1975-11-06T11:39:01+03:30", "utc": "1975-11-06T08:09:01Z", "ms": 184493340690.67938 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-07", "window": { "start": { "local": "1975-11-07T10:51:03+03:30", "utc": "1975-11-07T07:21:03Z", "ms": 184576863398.14172 }, "end": { "local": "1975-11-07T11:39:03+03:30", "utc": "1975-11-07T08:09:03Z", "ms": 184579743398.14172 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:17 on Thu 6 Nov to 08:04 on Fri 7 Nov.", "fact": "1975-11-06T05:46:47Z → 1975-11-07T04:34:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 6th, 10:51–11:39 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5653 s" }, { "step": "ruling", "text": "Nāga Caturthī, Mashhad, 1975: Thursday 6 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": "1975-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-06", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Caturthī 1975 falls on Thursday 6 November. Caturthī runs from 09:17 on Thu 6 Nov to 08:04 on Fri 7 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/vinayaka-chaturthi?on=1975-11-06", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5653, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-11-06T09:16:47+03:30", "utc": "1975-11-06T05:46:47Z", "ms": 184484807335.65155 }, "end": { "local": "1975-11-07T08:04:12+03:30", "utc": "1975-11-07T04:34:12Z", "ms": 184566852489.6241 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-06T09:16:47+03:30", "utc": "1975-11-06T05:46:47Z", "ms": 184484807335.65155 }, "end": { "local": "1975-11-07T08:04:12+03:30", "utc": "1975-11-07T04:34:12Z", "ms": 184566852489.6241 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-06", "window": { "start": { "local": "1975-11-06T10:51:01+03:30", "utc": "1975-11-06T07:21:01Z", "ms": 184490460690.67938 }, "end": { "local": "1975-11-06T11:39:01+03:30", "utc": "1975-11-06T08:09:01Z", "ms": 184493340690.67938 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-07", "window": { "start": { "local": "1975-11-07T10:51:03+03:30", "utc": "1975-11-07T07:21:03Z", "ms": 184576863398.14172 }, "end": { "local": "1975-11-07T11:39:03+03:30", "utc": "1975-11-07T08:09:03Z", "ms": 184579743398.14172 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:17 on Thu 6 Nov to 08:04 on Fri 7 Nov.", "fact": "1975-11-06T05:46:47Z → 1975-11-07T04:34:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 6th, 10:51–11:39 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5653 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Thursday 6 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": "1975-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-06", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Thursday 6 November. Caturthī runs from 09:17 on Thu 6 Nov to 08:04 on Fri 7 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-11-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10401, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-11-08T07:37:26+03:30", "utc": "1975-11-08T04:07:26Z", "ms": 184651646253.8624 }, "end": { "local": "1975-11-09T07:57:50+03:30", "utc": "1975-11-09T04:27:50Z", "ms": 184739270251.77914 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-08T07:37:26+03:30", "utc": "1975-11-08T04:07:26Z", "ms": 184651646253.8624 }, "end": { "local": "1975-11-09T07:57:50+03:30", "utc": "1975-11-09T04:27:50Z", "ms": 184739270251.77914 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-08", "window": { "start": { "local": "1975-11-08T10:51:07+03:30", "utc": "1975-11-08T07:21:07Z", "ms": 184663266931.36465 }, "end": { "local": "1975-11-08T11:39:07+03:30", "utc": "1975-11-08T08:09:07Z", "ms": 184666146931.36465 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-09", "window": { "start": { "local": "1975-11-09T10:51:11+03:30", "utc": "1975-11-09T07:21:11Z", "ms": 184749671292.76654 }, "end": { "local": "1975-11-09T11:39:11+03:30", "utc": "1975-11-09T08:09:11Z", "ms": 184752551292.76654 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 07:37 on Sat 8 Nov to 07:58 on Sun 9 Nov.", "fact": "1975-11-08T04:07:26Z → 1975-11-09T04:27:50Z" }, { "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": "Ṣaṣṭhī 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10401 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Mashhad, 1975: Saturday 8 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": "1975-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-08", "confidence": "determinate" } ], "quote": "In Mashhad, Sūrya Ṣaṣṭhī (Chhath) 1975 falls on Saturday 8 November. Ṣaṣṭhī runs from 07:37 on Sat 8 Nov to 07:58 on Sun 9 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-10", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 265, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1975-11-10T09:03:05+03:30", "utc": "1975-11-10T05:33:05Z", "ms": 184829584933.07135 }, "end": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-10T09:03:05+03:30", "utc": "1975-11-10T05:33:05Z", "ms": 184829584933.07135 }, "end": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-10", "window": { "start": { "local": "1975-11-10T10:51:16+03:30", "utc": "1975-11-10T07:21:16Z", "ms": 184836076484.80585 }, "end": { "local": "1975-11-10T11:39:16+03:30", "utc": "1975-11-10T08:09:16Z", "ms": 184838956484.80585 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-11", "window": { "start": { "local": "1975-11-11T10:51:23+03:30", "utc": "1975-11-11T07:21:23Z", "ms": 184922482509.808 }, "end": { "local": "1975-11-11T11:39:23+03:30", "utc": "1975-11-11T08:09:23Z", "ms": 184925362509.808 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:03 on Mon 10 Nov to 10:47 on Tue 11 Nov.", "fact": "1975-11-10T05:33:05Z → 1975-11-11T07:16:58Z" }, { "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": "Aṣṭamī 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: unstated → only-day · margin 265 s < 300 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Mashhad, 1975: Monday 10 November.", "fact": "confidence: boundary (margin)" } ], "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": "1975-11-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-10", "confidence": "boundary" } ], "quote": "In Mashhad, Gopāṣṭamī 1975 falls on Monday 10 November. Aṣṭamī runs from 09:03 on Mon 10 Nov to 10:47 on Tue 11 Nov and covers all of madhyāhna that midday. It is 4 min 25 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-11", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 265, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 }, "end": { "local": "1975-11-12T12:59:51+03:30", "utc": "1975-11-12T09:29:51Z", "ms": 185016590801.35928 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 }, "end": { "local": "1975-11-12T12:59:51+03:30", "utc": "1975-11-12T09:29:51Z", "ms": 185016590801.35928 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-11", "window": { "start": { "local": "1975-11-11T10:51:23+03:30", "utc": "1975-11-11T07:21:23Z", "ms": 184922482509.808 }, "end": { "local": "1975-11-11T11:39:23+03:30", "utc": "1975-11-11T08:09:23Z", "ms": 184925362509.808 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-12", "window": { "start": { "local": "1975-11-12T10:51:29+03:30", "utc": "1975-11-12T07:21:29Z", "ms": 185008889369.80457 }, "end": { "local": "1975-11-12T11:39:29+03:30", "utc": "1975-11-12T08:09:29Z", "ms": 185011769369.80457 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:47 on Tue 11 Nov to 13:00 on Wed 12 Nov.", "fact": "1975-11-11T07:16:58Z → 1975-11-12T09:29:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:51–11:39 on the 11th, 10:51–11:39 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 48 of 48 on the 12th.", "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 265 s < 300 s" }, { "step": "ruling", "text": "Durgā Navamī, Mashhad, 1975: Tuesday 11 November.", "fact": "confidence: boundary (margin)" } ], "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": "1975-11-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-11", "confidence": "determinate" } ], "quote": "In Mashhad, Durgā Navamī 1975 falls on Tuesday 11 November. Navamī runs from 10:47 on Tue 11 Nov to 13:00 on Wed 12 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. It is 4 min 25 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4522, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 }, "end": { "local": "1975-11-12T12:59:51+03:30", "utc": "1975-11-12T09:29:51Z", "ms": 185016590801.35928 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-11T10:46:58+03:30", "utc": "1975-11-11T07:16:58Z", "ms": 184922217604.9701 }, "end": { "local": "1975-11-12T12:59:51+03:30", "utc": "1975-11-12T09:29:51Z", "ms": 185016590801.35928 } }, "kaala": "purvahna", "days": [ { "local_date": "1975-11-11", "window": { "start": { "local": "1975-11-11T06:04:01+03:30", "utc": "1975-11-11T02:34:01Z", "ms": 184905240942.73776 }, "end": { "local": "1975-11-11T09:31:35+03:30", "utc": "1975-11-11T06:01:35Z", "ms": 184917695320.7846 } }, "covered_min": 0, "window_min": 208, "qualifies": false }, { "local_date": "1975-11-12", "window": { "start": { "local": "1975-11-12T06:05:02+03:30", "utc": "1975-11-12T02:35:02Z", "ms": 184991701978.3512 }, "end": { "local": "1975-11-12T09:32:00+03:30", "utc": "1975-11-12T06:02:00Z", "ms": 185004120239.32013 } }, "covered_min": 207, "window_min": 207, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:47 on Tue 11 Nov to 13:00 on Wed 12 Nov.", "fact": "1975-11-11T07:16:58Z → 1975-11-12T09:29:51Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:04–09:32 on the 11th, 06:05–09:32 on the 12th.", "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 208 minutes on the 11th and 207 of 207 on the 12th.", "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 4522 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Mashhad, 1975: Wednesday 12 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": "1975-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-12", "confidence": "determinate" } ], "quote": "In Mashhad, Akṣaya Navamī (Amla Navami) 1975 falls on Wednesday 12 November. Navamī runs from 10:47 on Tue 11 Nov to 13:00 on Wed 12 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-11-14", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33830, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-11-13T15:29:53+03:30", "utc": "1975-11-13T11:59:53Z", "ms": 185111993274.8672 }, "end": { "local": "1975-11-14T18:04:38+03:30", "utc": "1975-11-14T14:34:38Z", "ms": 185207678285.4547 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-13T15:29:53+03:30", "utc": "1975-11-13T11:59:53Z", "ms": 185111993274.8672 }, "end": { "local": "1975-11-14T18:04:38+03:30", "utc": "1975-11-14T14:34:38Z", "ms": 185207678285.4547 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-11-13", "window": { "start": { "local": "1975-11-13T06:06:03+03:30", "utc": "1975-11-13T02:36:03Z", "ms": 185078163057.89243 }, "end": { "local": "1975-11-13T06:06:03+03:30", "utc": "1975-11-13T02:36:03Z", "ms": 185078163057.89243 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-11-14", "window": { "start": { "local": "1975-11-14T06:07:04+03:30", "utc": "1975-11-14T02:37:04Z", "ms": 185164624154.29755 }, "end": { "local": "1975-11-14T06:07:04+03:30", "utc": "1975-11-14T02:37:04Z", "ms": 185164624154.29755 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:30 on Thu 13 Nov to 18:05 on Fri 14 Nov.", "fact": "1975-11-13T11:59:53Z → 1975-11-14T14:34:38Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 13th and 06:07 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 13th and is on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33830 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Mashhad, 1975: Friday 14 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": "1975-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-14", "confidence": "determinate" } ], "quote": "In Mashhad, Prabodhinī Ekādaśī 1975 falls on Friday 14 November. Ekādaśī runs from 15:30 on Thu 13 Nov to 18:05 on Fri 14 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-11-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-11-16", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8334, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-11-15T20:32:41+03:30", "utc": "1975-11-15T17:02:41Z", "ms": 185302961316.88626 }, "end": { "local": "1975-11-16T22:44:51+03:30", "utc": "1975-11-16T19:14:51Z", "ms": 185397290723.68784 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-15T20:32:41+03:30", "utc": "1975-11-15T17:02:41Z", "ms": 185302961316.88626 }, "end": { "local": "1975-11-16T22:44:51+03:30", "utc": "1975-11-16T19:14:51Z", "ms": 185397290723.68784 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-11-15", "window": { "start": { "local": "1975-11-15T16:23:45+03:30", "utc": "1975-11-15T12:53:45Z", "ms": 185288024706.49268 }, "end": { "local": "1975-11-15T18:13:48+03:30", "utc": "1975-11-15T14:43:48Z", "ms": 185294627583.72043 } }, "covered_min": 0, "window_min": 110, "qualifies": false }, { "local_date": "1975-11-16", "window": { "start": { "local": "1975-11-16T16:23:04+03:30", "utc": "1975-11-16T12:53:04Z", "ms": 185374384082.6112 }, "end": { "local": "1975-11-16T18:13:21+03:30", "utc": "1975-11-16T14:43:21Z", "ms": 185381000506.4972 } }, "covered_min": 110, "window_min": 110, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:33 on Sat 15 Nov to 22:45 on Sun 16 Nov.", "fact": "1975-11-15T17:02:41Z → 1975-11-16T19:14:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:24–18:14 on the 15th, 16:23–18:13 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 110 minutes on the 15th and 110 of 110 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8334 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Sunday 16 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": "1975-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-16", "confidence": "determinate" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Sunday 16 November. Trayodaśī runs from 20:33 on Sat 15 Nov to 22:45 on Sun 16 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-11-16", "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/1975/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32066, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-11-18T00:34:39+03:30", "utc": "1975-11-17T21:04:39Z", "ms": 185490278526.87842 }, "end": { "local": "1975-11-19T01:58:15+03:30", "utc": "1975-11-18T22:28:15Z", "ms": 185581694684.6258 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-18T00:34:39+03:30", "utc": "1975-11-17T21:04:39Z", "ms": 185490278526.87842 }, "end": { "local": "1975-11-19T01:58:15+03:30", "utc": "1975-11-18T22:28:15Z", "ms": 185581694684.6258 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-11-18", "window": { "start": { "local": "1975-11-18T10:52:28+03:30", "utc": "1975-11-18T07:22:28Z", "ms": 185527348117.23468 }, "end": { "local": "1975-11-18T11:40:28+03:30", "utc": "1975-11-18T08:10:28Z", "ms": 185530228117.23468 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-11-19", "window": { "start": { "local": "1975-11-19T10:52:41+03:30", "utc": "1975-11-19T07:22:41Z", "ms": 185613760836.12024 }, "end": { "local": "1975-11-19T11:40:41+03:30", "utc": "1975-11-19T08:10:41Z", "ms": 185616640836.12024 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:35 on Tue 18 Nov to 01:58 on Wed 19 Nov.", "fact": "1975-11-17T21:04:39Z → 1975-11-18T22:28:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 18th, 10:53–11:41 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32066 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Mashhad, 1975: Tuesday 18 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": "1975-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-18", "confidence": "determinate" } ], "quote": "In Mashhad, Kārtikī Pūrṇimā 1975 falls on Tuesday 18 November. Pūrṇimā runs from 00:35 on Tue 18 Nov to 01:58 on Wed 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3232, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-11-18T00:34:39+03:30", "utc": "1975-11-17T21:04:39Z", "ms": 185490278526.87842 }, "end": { "local": "1975-11-19T01:58:15+03:30", "utc": "1975-11-18T22:28:15Z", "ms": 185581694684.6258 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1975-11-18T00:34:39+03:30", "utc": "1975-11-17T21:04:39Z", "ms": 185490278526.87842 }, "end": { "local": "1975-11-19T01:58:15+03:30", "utc": "1975-11-18T22:28:15Z", "ms": 185581694684.6258 } }, "kaala": "nishita", "days": [ { "local_date": "1975-11-17", "window": { "start": { "local": "1975-11-17T22:52:47+03:30", "utc": "1975-11-17T19:22:47Z", "ms": 185484166670.55484 }, "end": { "local": "1975-11-17T23:40:47+03:30", "utc": "1975-11-17T20:10:47Z", "ms": 185487046670.55484 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-11-18", "window": { "start": { "local": "1975-11-18T22:52:58+03:30", "utc": "1975-11-18T19:22:58Z", "ms": 185570578489.3947 }, "end": { "local": "1975-11-18T23:40:58+03:30", "utc": "1975-11-18T20:10:58Z", "ms": 185573458489.3947 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:35 on Tue 18 Nov to 01:58 on Wed 19 Nov.", "fact": "1975-11-17T21:04:39Z → 1975-11-18T22:28:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:53–23:41 on the 17th, 22:53–23:41 on the 18th.", "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 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 night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3232 s" }, { "step": "ruling", "text": "Rāsayātrā, Mashhad, 1975: Tuesday 18 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": "1975-11-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-18", "confidence": "determinate" } ], "quote": "In Mashhad, Rāsayātrā 1975 falls on Tuesday 18 November. Pūrṇimā runs from 00:35 on Tue 18 Nov to 01:58 on Wed 19 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-11-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26685, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-11-22T03:21:58+03:30", "utc": "1975-11-21T23:51:58Z", "ms": 185845917974.80276 }, "end": { "local": "1975-11-23T02:56:11+03:30", "utc": "1975-11-22T23:26:11Z", "ms": 185930771268.06976 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-11-22T03:21:58+03:30", "utc": "1975-11-21T23:51:58Z", "ms": 185845917974.80276 }, "end": { "local": "1975-11-23T02:56:11+03:30", "utc": "1975-11-22T23:26:11Z", "ms": 185930771268.06976 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-11-21", "window": { "start": { "local": "1975-11-21T18:32:26+03:30", "utc": "1975-11-21T15:02:26Z", "ms": 185814145704.6944 }, "end": { "local": "1975-11-21T18:32:26+03:30", "utc": "1975-11-21T15:02:26Z", "ms": 185814145704.6944 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-11-22", "window": { "start": { "local": "1975-11-22T19:31:26+03:30", "utc": "1975-11-22T16:01:26Z", "ms": 185904086377.73386 }, "end": { "local": "1975-11-22T19:31:26+03:30", "utc": "1975-11-22T16:01:26Z", "ms": 185904086377.73386 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:22 on Sat 22 Nov to 02:56 on Sun 23 Nov.", "fact": "1975-11-21T23:51:58Z → 1975-11-22T23:26:11Z" }, { "step": "kaala", "text": "Moonrise is at 18:32 on the 21st and 19:31 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26685 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Saturday 22 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": "1975-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-22", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Saturday 22 November. Caturthī runs from 03:22 on Sat 22 Nov to 02:56 on Sun 23 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-11-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/ekadashi?on=1975-11-29", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28210, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-11-28T16:46:08+03:30", "utc": "1975-11-28T13:16:08Z", "ms": 186412568128.67426 }, "end": { "local": "1975-11-29T14:12:11+03:30", "utc": "1975-11-29T10:42:11Z", "ms": 186489731171.2871 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-11-28T16:46:08+03:30", "utc": "1975-11-28T13:16:08Z", "ms": 186412568128.67426 }, "end": { "local": "1975-11-29T14:12:11+03:30", "utc": "1975-11-29T10:42:11Z", "ms": 186489731171.2871 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-11-28", "window": { "start": { "local": "1975-11-28T06:21:04+03:30", "utc": "1975-11-28T02:51:04Z", "ms": 186375063782.4855 }, "end": { "local": "1975-11-28T06:21:04+03:30", "utc": "1975-11-28T02:51:04Z", "ms": 186375063782.4855 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-11-29", "window": { "start": { "local": "1975-11-29T06:22:01+03:30", "utc": "1975-11-29T02:52:01Z", "ms": 186461521161.77817 }, "end": { "local": "1975-11-29T06:22:01+03:30", "utc": "1975-11-29T02:52:01Z", "ms": 186461521161.77817 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:46 on Fri 28 Nov to 14:12 on Sat 29 Nov.", "fact": "1975-11-28T13:16:08Z → 1975-11-29T10:42:11Z" }, { "step": "kaala", "text": "Sunrise is at 06:21 on the 28th and 06:22 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28210 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Mashhad, 1975: Saturday 29 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": "1975-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-29", "confidence": "determinate" } ], "quote": "In Mashhad, Utpannā Ekādaśī 1975 falls on Saturday 29 November. Ekādaśī runs from 16:46 on Fri 28 Nov to 14:12 on Sat 29 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-11-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/pradosha-vrata?on=1975-11-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16958, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-11-30T11:34:13+03:30", "utc": "1975-11-30T08:04:13Z", "ms": 186566652541.38235 }, "end": { "local": "1975-12-01T08:58:14+03:30", "utc": "1975-12-01T05:28:14Z", "ms": 186643694186.04 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-11-30T11:34:13+03:30", "utc": "1975-11-30T08:04:13Z", "ms": 186566652541.38235 }, "end": { "local": "1975-12-01T08:58:14+03:30", "utc": "1975-12-01T05:28:14Z", "ms": 186643694186.04 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-11-30", "window": { "start": { "local": "1975-11-30T16:16:50+03:30", "utc": "1975-11-30T12:46:50Z", "ms": 186583610167.03058 }, "end": { "local": "1975-11-30T18:09:47+03:30", "utc": "1975-11-30T14:39:47Z", "ms": 186590386695.47498 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1975-12-01", "window": { "start": { "local": "1975-12-01T16:16:38+03:30", "utc": "1975-12-01T12:46:38Z", "ms": 186669998199.47403 }, "end": { "local": "1975-12-01T18:09:44+03:30", "utc": "1975-12-01T14:39:44Z", "ms": 186676783721.49207 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:34 on Sun 30 Nov to 08:58 on Mon 1 Dec.", "fact": "1975-11-30T08:04:13Z → 1975-12-01T05:28:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:17–18:10 on the 30th, 16:17–18:10 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 113 of 113 minutes on the 30th and 0 of 113 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16958 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Sunday 30 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": "1975-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-11-30", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Sunday 30 November. Trayodaśī runs from 11:34 on Sun 30 Nov to 08:58 on Mon 1 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-11-30", "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/1975/shivaratri?on=1975-12-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24380, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-12-01T08:58:14+03:30", "utc": "1975-12-01T05:28:14Z", "ms": 186643694186.04 }, "end": { "local": "1975-12-02T06:31:04+03:30", "utc": "1975-12-02T03:01:04Z", "ms": 186721263877.4702 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-01T08:58:14+03:30", "utc": "1975-12-01T05:28:14Z", "ms": 186643694186.04 }, "end": { "local": "1975-12-02T06:31:04+03:30", "utc": "1975-12-02T03:01:04Z", "ms": 186721263877.4702 } }, "kaala": "nishita", "days": [ { "local_date": "1975-11-30", "window": { "start": { "local": "1975-11-30T22:56:22+03:30", "utc": "1975-11-30T19:26:22Z", "ms": 186607582148.69705 }, "end": { "local": "1975-11-30T23:44:22+03:30", "utc": "1975-11-30T20:14:22Z", "ms": 186610462148.69705 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-12-01", "window": { "start": { "local": "1975-12-01T22:56:44+03:30", "utc": "1975-12-01T19:26:44Z", "ms": 186694003907.0417 }, "end": { "local": "1975-12-01T23:44:44+03:30", "utc": "1975-12-01T20:14:44Z", "ms": 186696883907.0417 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:58 on Mon 1 Dec to 06:31 on Tue 2 Dec.", "fact": "1975-12-01T05:28:14Z → 1975-12-02T03:01:04Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:56–23:44 on the 30th, 22:57–23:45 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 1st.", "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 24380 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Monday 1 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": "1975-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-01", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Monday 1 December. Caturdaśī runs from 08:58 on Mon 1 Dec to 06:31 on Tue 2 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-12-01", "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/1975/vinayaka-chaturthi?on=1975-12-06", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37090, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-12-06T00:37:32+03:30", "utc": "1975-12-05T21:07:32Z", "ms": 187045652346.9618 }, "end": { "local": "1975-12-07T00:40:32+03:30", "utc": "1975-12-06T21:10:32Z", "ms": 187132232073.7623 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-06T00:37:32+03:30", "utc": "1975-12-05T21:07:32Z", "ms": 187045652346.9618 }, "end": { "local": "1975-12-07T00:40:32+03:30", "utc": "1975-12-06T21:10:32Z", "ms": 187132232073.7623 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-06", "window": { "start": { "local": "1975-12-06T10:58:16+03:30", "utc": "1975-12-06T07:28:16Z", "ms": 187082896177.45316 }, "end": { "local": "1975-12-06T11:46:16+03:30", "utc": "1975-12-06T08:16:16Z", "ms": 187085776177.45316 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-07", "window": { "start": { "local": "1975-12-07T10:58:42+03:30", "utc": "1975-12-07T07:28:42Z", "ms": 187169321883.5091 }, "end": { "local": "1975-12-07T11:46:42+03:30", "utc": "1975-12-07T08:16:42Z", "ms": 187172201883.5091 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:38 on Sat 6 Dec to 00:41 on Sun 7 Dec.", "fact": "1975-12-05T21:07:32Z → 1975-12-06T21:10:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:58–11:46 on the 6th, 10:59–11:47 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37090 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mashhad, 1975: Saturday 6 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": "1975-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-06", "confidence": "determinate" } ], "quote": "In Mashhad, Vināyaka Caturthī 1975 falls on Saturday 6 December. Caturthī runs from 00:38 on Sat 6 Dec to 00:41 on Sun 7 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/vinayaka-chaturthi?on=1975-12-06", "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/1975/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34322, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1975-12-07T00:40:32+03:30", "utc": "1975-12-06T21:10:32Z", "ms": 187132232073.7623 }, "end": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-07T00:40:32+03:30", "utc": "1975-12-06T21:10:32Z", "ms": 187132232073.7623 }, "end": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-07", "window": { "start": { "local": "1975-12-07T10:58:42+03:30", "utc": "1975-12-07T07:28:42Z", "ms": 187169321883.5091 }, "end": { "local": "1975-12-07T11:46:42+03:30", "utc": "1975-12-07T08:16:42Z", "ms": 187172201883.5091 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-08", "window": { "start": { "local": "1975-12-08T10:59:08+03:30", "utc": "1975-12-08T07:29:08Z", "ms": 187255748090.0041 }, "end": { "local": "1975-12-08T11:47:08+03:30", "utc": "1975-12-08T08:17:08Z", "ms": 187258628090.0041 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:41 on Sun 7 Dec to 01:27 on Mon 8 Dec.", "fact": "1975-12-06T21:10:32Z → 1975-12-07T21:57:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:59–11:47 on the 7th, 10:59–11:47 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34322 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Mashhad, 1975: Sunday 7 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": "1975-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-07", "confidence": "determinate" } ], "quote": "In Mashhad, Nāga Pañcamī (Mārgaśīrṣa) 1975 falls on Sunday 7 December. Pañcamī runs from 00:41 on Sun 7 Dec to 01:27 on Mon 8 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29070, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 }, "end": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 }, "end": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-08", "window": { "start": { "local": "1975-12-08T10:59:08+03:30", "utc": "1975-12-08T07:29:08Z", "ms": 187255748090.0041 }, "end": { "local": "1975-12-08T11:47:08+03:30", "utc": "1975-12-08T08:17:08Z", "ms": 187258628090.0041 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-09", "window": { "start": { "local": "1975-12-09T10:59:35+03:30", "utc": "1975-12-09T07:29:35Z", "ms": 187342174767.9486 }, "end": { "local": "1975-12-09T11:47:35+03:30", "utc": "1975-12-09T08:17:35Z", "ms": 187345054767.9486 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:27 on Mon 8 Dec to 02:55 on Tue 9 Dec.", "fact": "1975-12-07T21:57:06Z → 1975-12-08T23:25:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:59–11:47 on the 8th, 11:00–11:48 on the 9th.", "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 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29070 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Mashhad, 1975: Monday 8 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": "1975-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-08", "confidence": "determinate" } ], "quote": "In Mashhad, Campā Ṣaṣṭhī 1975 falls on Monday 8 December. Ṣaṣṭhī runs from 01:27 on Mon 8 Dec to 02:55 on Tue 9 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29070, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 }, "end": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-08T01:27:06+03:30", "utc": "1975-12-07T21:57:06Z", "ms": 187221426084.03384 }, "end": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-08", "window": { "start": { "local": "1975-12-08T10:59:08+03:30", "utc": "1975-12-08T07:29:08Z", "ms": 187255748090.0041 }, "end": { "local": "1975-12-08T11:47:08+03:30", "utc": "1975-12-08T08:17:08Z", "ms": 187258628090.0041 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-09", "window": { "start": { "local": "1975-12-09T10:59:35+03:30", "utc": "1975-12-09T07:29:35Z", "ms": 187342174767.9486 }, "end": { "local": "1975-12-09T11:47:35+03:30", "utc": "1975-12-09T08:17:35Z", "ms": 187345054767.9486 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:27 on Mon 8 Dec to 02:55 on Tue 9 Dec.", "fact": "1975-12-07T21:57:06Z → 1975-12-08T23:25:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:59–11:47 on the 8th, 11:00–11:48 on the 9th.", "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 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29070 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Mashhad, 1975: Monday 8 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": "1975-12-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-08", "confidence": "determinate" } ], "quote": "In Mashhad, Skanda Ṣaṣṭhī 1975 falls on Monday 8 December. Ṣaṣṭhī runs from 01:27 on Mon 8 Dec to 02:55 on Tue 9 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21730, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 }, "end": { "local": "1975-12-10T04:57:52+03:30", "utc": "1975-12-10T01:27:52Z", "ms": 187406871507.58847 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-09T02:55:04+03:30", "utc": "1975-12-08T23:25:04Z", "ms": 187313104350.7124 }, "end": { "local": "1975-12-10T04:57:52+03:30", "utc": "1975-12-10T01:27:52Z", "ms": 187406871507.58847 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-09", "window": { "start": { "local": "1975-12-09T10:59:35+03:30", "utc": "1975-12-09T07:29:35Z", "ms": 187342174767.9486 }, "end": { "local": "1975-12-09T11:47:35+03:30", "utc": "1975-12-09T08:17:35Z", "ms": 187345054767.9486 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-10", "window": { "start": { "local": "1975-12-10T11:00:02+03:30", "utc": "1975-12-10T07:30:02Z", "ms": 187428601888.24353 }, "end": { "local": "1975-12-10T11:48:02+03:30", "utc": "1975-12-10T08:18:02Z", "ms": 187431481888.24353 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:55 on Tue 9 Dec to 04:58 on Wed 10 Dec.", "fact": "1975-12-08T23:25:04Z → 1975-12-10T01:27:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 9th, 11:00–11:48 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21730 s" }, { "step": "ruling", "text": "Mitra Saptamī, Mashhad, 1975: Tuesday 9 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": "1975-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-09", "confidence": "determinate" } ], "quote": "In Mashhad, Mitra Saptamī 1975 falls on Tuesday 9 December. Saptamī runs from 02:55 on Tue 9 Dec to 04:58 on Wed 10 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/ekadashi?on=1975-12-14", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21581, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-12-13T12:33:40+03:30", "utc": "1975-12-13T09:03:40Z", "ms": 187693420096.88068 }, "end": { "local": "1975-12-14T14:47:25+03:30", "utc": "1975-12-14T11:17:25Z", "ms": 187787845320.8303 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-13T12:33:40+03:30", "utc": "1975-12-13T09:03:40Z", "ms": 187693420096.88068 }, "end": { "local": "1975-12-14T14:47:25+03:30", "utc": "1975-12-14T11:17:25Z", "ms": 187787845320.8303 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-12-13", "window": { "start": { "local": "1975-12-13T06:33:59+03:30", "utc": "1975-12-13T03:03:59Z", "ms": 187671839296.54492 }, "end": { "local": "1975-12-13T06:33:59+03:30", "utc": "1975-12-13T03:03:59Z", "ms": 187671839296.54492 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1975-12-14", "window": { "start": { "local": "1975-12-14T06:34:42+03:30", "utc": "1975-12-14T03:04:42Z", "ms": 187758282416.5144 }, "end": { "local": "1975-12-14T06:34:42+03:30", "utc": "1975-12-14T03:04:42Z", "ms": 187758282416.5144 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:34 on Sat 13 Dec to 14:47 on Sun 14 Dec.", "fact": "1975-12-13T09:03:40Z → 1975-12-14T11:17:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 13th and 06:35 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 13th and is on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21581 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Mashhad, 1975: Sunday 14 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": "1975-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-14", "confidence": "determinate" } ], "quote": "In Mashhad, Mokṣadā Ekādaśī 1975 falls on Sunday 14 December. Ekādaśī runs from 12:34 on Sat 13 Dec to 14:47 on Sun 14 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-12-14", "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/1975/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10651, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1975-12-14T14:47:25+03:30", "utc": "1975-12-14T11:17:25Z", "ms": 187787845320.8303 }, "end": { "local": "1975-12-15T16:32:18+03:30", "utc": "1975-12-15T13:02:18Z", "ms": 187880538293.31717 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-14T14:47:25+03:30", "utc": "1975-12-14T11:17:25Z", "ms": 187787845320.8303 }, "end": { "local": "1975-12-15T16:32:18+03:30", "utc": "1975-12-15T13:02:18Z", "ms": 187880538293.31717 } }, "kaala": "madhyahna", "days": [ { "local_date": "1975-12-14", "window": { "start": { "local": "1975-12-14T11:01:54+03:30", "utc": "1975-12-14T07:31:54Z", "ms": 187774314204.62793 }, "end": { "local": "1975-12-14T11:49:54+03:30", "utc": "1975-12-14T08:19:54Z", "ms": 187777194204.62793 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1975-12-15", "window": { "start": { "local": "1975-12-15T11:02:23+03:30", "utc": "1975-12-15T07:32:23Z", "ms": 187860743093.97916 }, "end": { "local": "1975-12-15T11:50:23+03:30", "utc": "1975-12-15T08:20:23Z", "ms": 187863623093.97916 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:47 on Sun 14 Dec to 16:32 on Mon 15 Dec.", "fact": "1975-12-14T11:17:25Z → 1975-12-15T13:02:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 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": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10651 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Mashhad, 1975: Monday 15 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": "1975-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-15", "confidence": "determinate" } ], "quote": "In Mashhad, Akhaṇḍa Dvādaśī 1975 falls on Monday 15 December. Dvādaśī runs from 14:47 on Sun 14 Dec to 16:32 on Mon 15 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/pradosha-vrata?on=1975-12-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-15", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 896, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-12-15T16:32:18+03:30", "utc": "1975-12-15T13:02:18Z", "ms": 187880538293.31717 }, "end": { "local": "1975-12-16T17:41:54+03:30", "utc": "1975-12-16T14:11:54Z", "ms": 187971114318.6178 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-15T16:32:18+03:30", "utc": "1975-12-15T13:02:18Z", "ms": 187880538293.31717 }, "end": { "local": "1975-12-16T17:41:54+03:30", "utc": "1975-12-16T14:11:54Z", "ms": 187971114318.6178 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-12-15", "window": { "start": { "local": "1975-12-15T16:17:22+03:30", "utc": "1975-12-15T12:47:22Z", "ms": 187879641998.86096 }, "end": { "local": "1975-12-15T18:11:52+03:30", "utc": "1975-12-15T14:41:52Z", "ms": 187886511675.21588 } }, "covered_min": 100, "window_min": 114, "qualifies": true }, { "local_date": "1975-12-16", "window": { "start": { "local": "1975-12-16T16:17:40+03:30", "utc": "1975-12-16T12:47:40Z", "ms": 187966059923.98932 }, "end": { "local": "1975-12-16T18:12:12+03:30", "utc": "1975-12-16T14:42:12Z", "ms": 187972932403.8019 } }, "covered_min": 84, "window_min": 115, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:32 on Mon 15 Dec to 17:42 on Tue 16 Dec.", "fact": "1975-12-15T13:02:18Z → 1975-12-16T14:11:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:17–18:12 on the 15th, 16:18–18:12 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 100 of 114 minutes on the 15th and 84 of 115 on the 16th.", "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 896 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mashhad, 1975: Monday 15 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": "1975-12-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-15", "confidence": "boundary" } ], "quote": "In Mashhad, Śukla Pradoṣa Vrata 1975 falls on Monday 15 December. Trayodaśī runs from 16:32 on Mon 15 Dec to 17:42 on Tue 16 Dec and covers 100 of 114 minutes of pradoṣa that evening. It also reaches the next evening for 84 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/1975/pradosha-vrata?on=1975-12-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mashhad/festivals/1975/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-18", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 80, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1975-12-17T18:13:55+03:30", "utc": "1975-12-17T14:43:55Z", "ms": 188059434733.2551 }, "end": { "local": "1975-12-18T18:09:28+03:30", "utc": "1975-12-18T14:39:28Z", "ms": 188145568436.03604 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-17T18:13:55+03:30", "utc": "1975-12-17T14:43:55Z", "ms": 188059434733.2551 }, "end": { "local": "1975-12-18T18:09:28+03:30", "utc": "1975-12-18T14:39:28Z", "ms": 188145568436.03604 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-12-17", "window": { "start": { "local": "1975-12-17T16:18:00+03:30", "utc": "1975-12-17T12:48:00Z", "ms": 188052479749.7865 }, "end": { "local": "1975-12-17T18:12:35+03:30", "utc": "1975-12-17T14:42:35Z", "ms": 188059354583.50122 } }, "covered_min": 0, "window_min": 115, "qualifies": false }, { "local_date": "1975-12-18", "window": { "start": { "local": "1975-12-18T16:18:21+03:30", "utc": "1975-12-18T12:48:21Z", "ms": 188138901456.56924 }, "end": { "local": "1975-12-18T18:12:58+03:30", "utc": "1975-12-18T14:42:58Z", "ms": 188145778192.17282 } }, "covered_min": 111, "window_min": 115, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:14 on Wed 17 Dec to 18:09 on Thu 18 Dec.", "fact": "1975-12-17T14:43:55Z → 1975-12-18T14:39:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:18–18:13 on the 17th, 16:18–18:13 on the 18th.", "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 115 minutes on the 17th and 111 of 115 on the 18th.", "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 80 s < 300 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Mashhad, 1975: Thursday 18 December.", "fact": "confidence: boundary (margin)" } ], "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": "1975-12-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-18", "confidence": "boundary" } ], "quote": "In Mashhad, Dattātreyotpatti (Datta Jayanti) 1975 falls on Thursday 18 December. Pūrṇimā runs from 18:14 on Wed 17 Dec to 18:09 on Thu 18 Dec and covers 111 of 115 minutes of pradoṣa that evening. It is 1 min 20 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mashhad/festivals/1975/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/1975/sankashta-chaturthi?on=1975-12-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16119, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1975-12-21T15:00:49+03:30", "utc": "1975-12-21T11:30:49Z", "ms": 188393448931.3074 }, "end": { "local": "1975-12-22T13:18:15+03:30", "utc": "1975-12-22T09:48:15Z", "ms": 188473695254.01324 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-21T15:00:49+03:30", "utc": "1975-12-21T11:30:49Z", "ms": 188393448931.3074 }, "end": { "local": "1975-12-22T13:18:15+03:30", "utc": "1975-12-22T09:48:15Z", "ms": 188473695254.01324 } }, "kaala": "moonrise", "days": [ { "local_date": "1975-12-21", "window": { "start": { "local": "1975-12-21T19:29:28+03:30", "utc": "1975-12-21T15:59:28Z", "ms": 188409567986.2833 }, "end": { "local": "1975-12-21T19:29:28+03:30", "utc": "1975-12-21T15:59:28Z", "ms": 188409567986.2833 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-12-22", "window": { "start": { "local": "1975-12-22T20:35:20+03:30", "utc": "1975-12-22T17:05:20Z", "ms": 188499920470.5375 }, "end": { "local": "1975-12-22T20:35:20+03:30", "utc": "1975-12-22T17:05:20Z", "ms": 188499920470.5375 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:01 on Sun 21 Dec to 13:18 on Mon 22 Dec.", "fact": "1975-12-21T11:30:49Z → 1975-12-22T09:48:15Z" }, { "step": "kaala", "text": "Moonrise is at 19:29 on the 21st and 20:35 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16119 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mashhad, 1975: Sunday 21 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": "1975-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-21", "confidence": "determinate" } ], "quote": "In Mashhad, Saṅkaṣṭa Caturthī 1975 falls on Sunday 21 December. Caturthī runs from 15:01 on Sun 21 Dec to 13:18 on Mon 22 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/sankashta-chaturthi?on=1975-12-21", "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/1975/ekadashi?on=1975-12-28", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19136, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1975-12-28T01:23:11+03:30", "utc": "1975-12-27T21:53:11Z", "ms": 188949191182.39984 }, "end": { "local": "1975-12-28T23:31:52+03:30", "utc": "1975-12-28T20:01:52Z", "ms": 189028912391.6592 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-28T01:23:11+03:30", "utc": "1975-12-27T21:53:11Z", "ms": 188949191182.39984 }, "end": { "local": "1975-12-28T23:31:52+03:30", "utc": "1975-12-28T20:01:52Z", "ms": 189028912391.6592 } }, "kaala": "sunrise", "days": [ { "local_date": "1975-12-28", "window": { "start": { "local": "1975-12-28T06:42:07+03:30", "utc": "1975-12-28T03:12:07Z", "ms": 188968327134.4583 }, "end": { "local": "1975-12-28T06:42:07+03:30", "utc": "1975-12-28T03:12:07Z", "ms": 188968327134.4583 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1975-12-29", "window": { "start": { "local": "1975-12-29T06:42:26+03:30", "utc": "1975-12-29T03:12:26Z", "ms": 189054746184.28503 }, "end": { "local": "1975-12-29T06:42:26+03:30", "utc": "1975-12-29T03:12:26Z", "ms": 189054746184.28503 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:23 on Sun 28 Dec to 23:32 on Sun 28 Dec.", "fact": "1975-12-27T21:53:11Z → 1975-12-28T20:01:52Z" }, { "step": "kaala", "text": "Sunrise is at 06:42 on the 28th and 06:42 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19136 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Mashhad, 1975: Sunday 28 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": "1975-12-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-28", "confidence": "determinate" } ], "quote": "In Mashhad, Saphalā Ekādaśī 1975 falls on Sunday 28 December. Ekādaśī runs from 01:23 on Sun 28 Dec to 23:32 on Sun 28 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mashhad/festivals/1975/ekadashi?on=1975-12-28", "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/1975/pradosha-vrata?on=1975-12-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7104, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1975-12-29T21:48:53+03:30", "utc": "1975-12-29T18:18:53Z", "ms": 189109133098.1056 }, "end": { "local": "1975-12-30T20:17:47+03:30", "utc": "1975-12-30T16:47:47Z", "ms": 189190066807.35037 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-29T21:48:53+03:30", "utc": "1975-12-29T18:18:53Z", "ms": 189109133098.1056 }, "end": { "local": "1975-12-30T20:17:47+03:30", "utc": "1975-12-30T16:47:47Z", "ms": 189190066807.35037 } }, "kaala": "pradosha", "days": [ { "local_date": "1975-12-29", "window": { "start": { "local": "1975-12-29T16:24:17+03:30", "utc": "1975-12-29T12:54:17Z", "ms": 189089657044.55612 }, "end": { "local": "1975-12-29T18:18:45+03:30", "utc": "1975-12-29T14:48:45Z", "ms": 189096524556.1776 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1975-12-30", "window": { "start": { "local": "1975-12-30T16:24:59+03:30", "utc": "1975-12-30T12:54:59Z", "ms": 189176099102.93228 }, "end": { "local": "1975-12-30T18:19:23+03:30", "utc": "1975-12-30T14:49:23Z", "ms": 189182963049.4248 } }, "covered_min": 114, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:49 on Mon 29 Dec to 20:18 on Tue 30 Dec.", "fact": "1975-12-29T18:18:53Z → 1975-12-30T16:47:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:24–18:19 on the 29th, 16:25–18:19 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 114 minutes on the 29th and 114 of 114 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7104 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mashhad, 1975: Tuesday 30 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": "1975-12-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-30", "confidence": "determinate" } ], "quote": "In Mashhad, Kṛṣṇa Pradoṣa Vrata 1975 falls on Tuesday 30 December. Trayodaśī runs from 21:49 on Mon 29 Dec to 20:18 on Tue 30 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mashhad/festivals/1975/pradosha-vrata?on=1975-12-30", "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/1975/shivaratri?on=1975-12-30", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "124665", "year": 1975, "local_date": "1975-12-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10332, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1975-12-30T20:17:47+03:30", "utc": "1975-12-30T16:47:47Z", "ms": 189190066807.35037 }, "end": { "local": "1975-12-31T19:03:04+03:30", "utc": "1975-12-31T15:33:04Z", "ms": 189271984299.28625 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1975-12-30T20:17:47+03:30", "utc": "1975-12-30T16:47:47Z", "ms": 189190066807.35037 }, "end": { "local": "1975-12-31T19:03:04+03:30", "utc": "1975-12-31T15:33:04Z", "ms": 189271984299.28625 } }, "kaala": "nishita", "days": [ { "local_date": "1975-12-30", "window": { "start": { "local": "1975-12-30T23:09:59+03:30", "utc": "1975-12-30T19:39:59Z", "ms": 189200398902.2792 }, "end": { "local": "1975-12-30T23:57:59+03:30", "utc": "1975-12-30T20:27:59Z", "ms": 189203278902.2792 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1975-12-31", "window": { "start": { "local": "1975-12-31T23:10:27+03:30", "utc": "1975-12-31T19:40:27Z", "ms": 189286826856.80725 }, "end": { "local": "1975-12-31T23:58:27+03:30", "utc": "1975-12-31T20:28:27Z", "ms": 189289706856.80725 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:18 on Tue 30 Dec to 19:03 on Wed 31 Dec.", "fact": "1975-12-30T16:47:47Z → 1975-12-31T15:33:04Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:10–23:58 on the 30th, 23:10–23:58 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10332 s" }, { "step": "ruling", "text": "Śivarātri, Mashhad, 1975: Tuesday 30 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": "1975-12-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1975-12-30", "confidence": "determinate" } ], "quote": "In Mashhad, Śivarātri 1975 falls on Tuesday 30 December. Caturdaśī runs from 20:18 on Tue 30 Dec to 19:03 on Wed 31 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/mashhad/festivals/1975/shivaratri?on=1975-12-30", "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" } }