{ "id": "/mosul/festivals/1950", "place": { "id": "99072", "slug": "mosul", "name": "Mosul", "region": "Nineveh, Iraq", "country": "IQ", "lat": 36.335, "lon": 43.11889, "elevation_m": 228, "tz": "Asia/Baghdad" }, "year": 1950, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-01-01", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25822, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-01-01T08:32:43+03:00", "utc": "1950-01-01T05:32:43Z", "ms": -631132037093.837 }, "end": { "local": "1950-01-02T09:53:01+03:00", "utc": "1950-01-02T06:53:01Z", "ms": -631040818974.3317 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-01-01T08:32:43+03:00", "utc": "1950-01-01T05:32:43Z", "ms": -631132037093.837 }, "end": { "local": "1950-01-02T09:53:01+03:00", "utc": "1950-01-02T06:53:01Z", "ms": -631040818974.3317 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-01-01", "window": { "start": { "local": "1950-01-01T17:02:36+03:00", "utc": "1950-01-01T14:02:36Z", "ms": -631101443800.312 }, "end": { "local": "1950-01-01T18:56:52+03:00", "utc": "1950-01-01T15:56:52Z", "ms": -631094587981.8536 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "1950-01-02", "window": { "start": { "local": "1950-01-02T17:03:23+03:00", "utc": "1950-01-02T14:03:23Z", "ms": -631014997272.5897 }, "end": { "local": "1950-01-02T18:57:33+03:00", "utc": "1950-01-02T15:57:33Z", "ms": -631008146500.9714 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:33 on Sun 1 Jan to 09:53 on Mon 2 Jan.", "fact": "1950-01-01T05:32:43Z → 1950-01-02T06:53:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:03–18:57 on the 1st, 17:03–18:58 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 114 of 114 minutes on the 1st and 0 of 114 on the 2nd.", "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 25822 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Sunday 1 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": "1950-01-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-01", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Sunday 1 January. Trayodaśī runs from 08:33 on Sun 1 Jan to 09:53 on Mon 2 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-01-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-01-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39385, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-01-07T08:41:44+03:00", "utc": "1950-01-07T05:41:44Z", "ms": -630613096267.0499 }, "end": { "local": "1950-01-08T07:23:47+03:00", "utc": "1950-01-08T04:23:47Z", "ms": -630531372911.8845 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-07T08:41:44+03:00", "utc": "1950-01-07T05:41:44Z", "ms": -630613096267.0499 }, "end": { "local": "1950-01-08T07:23:47+03:00", "utc": "1950-01-08T04:23:47Z", "ms": -630531372911.8845 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-01-06", "window": { "start": { "local": "1950-01-06T19:17:55+03:00", "utc": "1950-01-06T16:17:55Z", "ms": -630661325445.3579 }, "end": { "local": "1950-01-06T19:17:55+03:00", "utc": "1950-01-06T16:17:55Z", "ms": -630661325445.3579 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-01-07", "window": { "start": { "local": "1950-01-07T20:27:22+03:00", "utc": "1950-01-07T17:27:22Z", "ms": -630570758106.8202 }, "end": { "local": "1950-01-07T20:27:22+03:00", "utc": "1950-01-07T17:27:22Z", "ms": -630570758106.8202 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:42 on Sat 7 Jan to 07:24 on Sun 8 Jan.", "fact": "1950-01-07T05:41:44Z → 1950-01-08T04:23:47Z" }, { "step": "kaala", "text": "Moonrise is at 19:18 on the 6th and 20:27 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 39385 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Saturday 7 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": "1950-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-07", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Saturday 7 January. Caturthī runs from 08:42 on Sat 7 Jan to 07:24 on Sun 8 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-01-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27307, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-02-12T13:46:12+03:00", "utc": "1950-02-12T10:46:12Z", "ms": -627484427627.9933 } }, "span": { "of": "transit", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 } }, "kaala": "sunset-day", "days": [ { "local_date": "1950-01-13", "window": { "start": { "local": "1950-01-12T17:12:10+03:00", "utc": "1950-01-12T14:12:10Z", "ms": -630150470282.4425 }, "end": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1950-01-14", "window": { "start": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 }, "end": { "local": "1950-01-14T17:14:06+03:00", "utc": "1950-01-14T14:14:06Z", "ms": -629977553808.908 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1950-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:48 on Sat 14 Jan.", "fact": "1950-01-13T21:48:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:13, and the day of the 14th ends at 17:14.", "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 27307 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Saturday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Mosul, 1950: Friday 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": "1950-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1950-01-13", "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": "1950-01-12", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Mosul, Bhogi 1950 falls on Friday 13 January. It is kept the day before Pongal, which falls on Saturday 14 January. The Sun enters Makara at 00:48 on Sat 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27307, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-02-12T13:46:12+03:00", "utc": "1950-02-12T10:46:12Z", "ms": -627484427627.9933 } }, "span": { "of": "transit", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 } }, "kaala": "sunset-day", "days": [ { "local_date": "1950-01-13", "window": { "start": { "local": "1950-01-12T17:12:10+03:00", "utc": "1950-01-12T14:12:10Z", "ms": -630150470282.4425 }, "end": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1950-01-14", "window": { "start": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 }, "end": { "local": "1950-01-14T17:14:06+03:00", "utc": "1950-01-14T14:14:06Z", "ms": -629977553808.908 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:48 on Sat 14 Jan.", "fact": "1950-01-13T21:48:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:13, and the day of the 14th ends at 17:14.", "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 27307 s" }, { "step": "ruling", "text": "Pongal, Mosul, 1950: Saturday 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": "1950-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1950-01-14", "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": "1950-01-13", "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 Mosul, Pongal 1950 falls on Saturday 14 January. The Sun enters Makara at 00:48 on Sat 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2894, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-02-12T13:46:12+03:00", "utc": "1950-02-12T10:46:12Z", "ms": -627484427627.9933 } }, "span": { "of": "transit", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 } }, "kaala": "civil-day", "days": [ { "local_date": "1950-01-13", "window": { "start": { "local": "1950-01-13T00:00:00+03:00", "utc": "1950-01-12T21:00:00Z", "ms": -630126000000 }, "end": { "local": "1950-01-14T00:00:00+03:00", "utc": "1950-01-13T21:00:00Z", "ms": -630039600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1950-01-14", "window": { "start": { "local": "1950-01-14T00:00:00+03:00", "utc": "1950-01-13T21:00:00Z", "ms": -630039600000 }, "end": { "local": "1950-01-15T00:00:00+03:00", "utc": "1950-01-14T21:00:00Z", "ms": -629953200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:48 on Sat 14 Jan.", "fact": "1950-01-13T21:48:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Mosul.", "fact": "civil-day: midnight-to-midnight · Asia/Baghdad" }, { "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 2894 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Mosul, 1950: Saturday 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": "1950-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1950-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1950-01-14", "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 Mosul, Makara Saṅkrānti 1950 falls on Saturday 14 January. The Sun enters Makara at 00:48 on Sat 14 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-01-14", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39287, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-01-13T20:23:26+03:00", "utc": "1950-01-13T17:23:26Z", "ms": -630052593598.976 }, "end": { "local": "1950-01-14T18:13:55+03:00", "utc": "1950-01-14T15:13:55Z", "ms": -629973964656.0786 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-13T20:23:26+03:00", "utc": "1950-01-13T17:23:26Z", "ms": -630052593598.976 }, "end": { "local": "1950-01-14T18:13:55+03:00", "utc": "1950-01-14T15:13:55Z", "ms": -629973964656.0786 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-01-13", "window": { "start": { "local": "1950-01-13T07:19:22+03:00", "utc": "1950-01-13T04:19:22Z", "ms": -630099638332.3896 }, "end": { "local": "1950-01-13T07:19:22+03:00", "utc": "1950-01-13T04:19:22Z", "ms": -630099638332.3896 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-01-14", "window": { "start": { "local": "1950-01-14T07:19:09+03:00", "utc": "1950-01-14T04:19:09Z", "ms": -630013251380.3536 }, "end": { "local": "1950-01-14T07:19:09+03:00", "utc": "1950-01-14T04:19:09Z", "ms": -630013251380.3536 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:23 on Fri 13 Jan to 18:14 on Sat 14 Jan.", "fact": "1950-01-13T17:23:26Z → 1950-01-14T15:13:55Z" }, { "step": "kaala", "text": "Sunrise is at 07:19 on the 13th and 07:19 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 39287 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Mosul, 1950: Saturday 14 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": "1950-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-14", "confidence": "determinate" } ], "quote": "In Mosul, Ṣaṭtilā Ekādaśī 1950 falls on Saturday 14 January. Ekādaśī runs from 20:23 on Fri 13 Jan to 18:14 on Sat 14 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-01-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27307, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-02-12T13:46:12+03:00", "utc": "1950-02-12T10:46:12Z", "ms": -627484427627.9933 } }, "span": { "of": "transit", "start": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 }, "end": { "local": "1950-01-14T00:48:14+03:00", "utc": "1950-01-13T21:48:14Z", "ms": -630036705736.028 } }, "kaala": "sunset-day", "days": [ { "local_date": "1950-01-13", "window": { "start": { "local": "1950-01-12T17:12:10+03:00", "utc": "1950-01-12T14:12:10Z", "ms": -630150470282.4425 }, "end": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1950-01-14", "window": { "start": { "local": "1950-01-13T17:13:08+03:00", "utc": "1950-01-13T14:13:08Z", "ms": -630064012417.7804 }, "end": { "local": "1950-01-14T17:14:06+03:00", "utc": "1950-01-14T14:14:06Z", "ms": -629977553808.908 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1950-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 00:48 on Sat 14 Jan.", "fact": "1950-01-13T21:48:14Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:13, and the day of the 14th ends at 17:14.", "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 27307 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Saturday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Mosul, 1950: Sunday 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": "1950-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1950-01-15", "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": "1950-01-14", "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 Mosul, Mattu Pongal 1950 falls on Sunday 15 January. It is kept the day after Pongal, which falls on Saturday 14 January. The Sun enters Makara at 00:48 on Sat 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-01-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4121, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-01-15T16:06:25+03:00", "utc": "1950-01-15T13:06:25Z", "ms": -629895215041.0199 }, "end": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-15T16:06:25+03:00", "utc": "1950-01-15T13:06:25Z", "ms": -629895215041.0199 }, "end": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-01-15", "window": { "start": { "local": "1950-01-15T17:15:05+03:00", "utc": "1950-01-15T14:15:05Z", "ms": -629891094508.8058 }, "end": { "local": "1950-01-15T19:07:34+03:00", "utc": "1950-01-15T16:07:34Z", "ms": -629884346354.3733 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "1950-01-16", "window": { "start": { "local": "1950-01-16T17:16:05+03:00", "utc": "1950-01-16T14:16:05Z", "ms": -629804634571.0981 }, "end": { "local": "1950-01-16T19:08:23+03:00", "utc": "1950-01-16T16:08:23Z", "ms": -629797896929.4323 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:06 on Sun 15 Jan to 14:07 on Mon 16 Jan.", "fact": "1950-01-15T13:06:25Z → 1950-01-16T11:06:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–19:08 on the 15th, 17:16–19:08 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 112 of 112 minutes on the 15th and 0 of 112 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 4121 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Sunday 15 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": "1950-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-15", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Sunday 15 January. Trayodaśī runs from 16:06 on Sun 15 Jan to 14:07 on Mon 16 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-01-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-01-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35188, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 }, "end": { "local": "1950-01-17T12:21:51+03:00", "utc": "1950-01-17T09:21:51Z", "ms": -629735888619.722 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 }, "end": { "local": "1950-01-17T12:21:51+03:00", "utc": "1950-01-17T09:21:51Z", "ms": -629735888619.722 } }, "kaala": "nishita", "days": [ { "local_date": "1950-01-16", "window": { "start": { "local": "1950-01-16T23:53:12+03:00", "utc": "1950-01-16T20:53:12Z", "ms": -629780808414.8513 }, "end": { "local": "1950-01-17T00:41:12+03:00", "utc": "1950-01-16T21:41:12Z", "ms": -629777928414.8513 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-01-17", "window": { "start": { "local": "1950-01-17T23:53:31+03:00", "utc": "1950-01-17T20:53:31Z", "ms": -629694388576.8027 }, "end": { "local": "1950-01-18T00:41:31+03:00", "utc": "1950-01-17T21:41:31Z", "ms": -629691508576.8027 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:07 on Mon 16 Jan to 12:22 on Tue 17 Jan.", "fact": "1950-01-16T11:06:44Z → 1950-01-17T09:21:51Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:53–00:41 on the 16th, 23:54–00:42 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35188 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Monday 16 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": "1950-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-16", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Monday 16 January. Caturdaśī runs from 14:07 on Mon 16 Jan to 12:22 on Tue 17 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-01-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18214, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 }, "end": { "local": "1950-01-17T12:21:51+03:00", "utc": "1950-01-17T09:21:51Z", "ms": -629735888619.722 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-16T14:06:44+03:00", "utc": "1950-01-16T11:06:44Z", "ms": -629815996343.8116 }, "end": { "local": "1950-01-17T12:21:51+03:00", "utc": "1950-01-17T09:21:51Z", "ms": -629735888619.722 } }, "kaala": "arunodaya", "days": [ { "local_date": "1950-01-16", "window": { "start": { "local": "1950-01-16T05:26:08+03:00", "utc": "1950-01-16T02:26:08Z", "ms": -629847231504.9948 }, "end": { "local": "1950-01-16T07:18:37+03:00", "utc": "1950-01-16T04:18:37Z", "ms": -629840483350.5623 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "1950-01-17", "window": { "start": { "local": "1950-01-17T05:26:00+03:00", "utc": "1950-01-17T02:26:00Z", "ms": -629760839900.2703 }, "end": { "local": "1950-01-17T07:18:18+03:00", "utc": "1950-01-17T04:18:18Z", "ms": -629754102258.6044 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:07 on Mon 16 Jan to 12:22 on Tue 17 Jan.", "fact": "1950-01-16T11:06:44Z → 1950-01-17T09:21:51Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:26–07:19 on the 16th, 05:26–07:18 on the 17th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 112 minutes on the 16th and 112 of 112 on the 17th.", "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 18214 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Mosul, 1950: Tuesday 17 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-17", "confidence": "determinate" } ], "quote": "In Mosul, Yama Tarpaṇa 1950 falls on Tuesday 17 January. Caturdaśī runs from 14:07 on Mon 16 Jan to 12:22 on Tue 17 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1603, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-01-21T10:18:54+03:00", "utc": "1950-01-21T07:18:54Z", "ms": -629397666434.5044 }, "end": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-21T10:18:54+03:00", "utc": "1950-01-21T07:18:54Z", "ms": -629397666434.5044 }, "end": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-01-21", "window": { "start": { "local": "1950-01-21T11:54:58+03:00", "utc": "1950-01-21T08:54:58Z", "ms": -629391902160.2297 }, "end": { "local": "1950-01-21T12:42:58+03:00", "utc": "1950-01-21T09:42:58Z", "ms": -629389022160.2297 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-01-22", "window": { "start": { "local": "1950-01-22T11:55:15+03:00", "utc": "1950-01-22T08:55:15Z", "ms": -629305485061.5646 }, "end": { "local": "1950-01-22T12:43:15+03:00", "utc": "1950-01-22T09:43:15Z", "ms": -629302605061.5646 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:19 on Sat 21 Jan to 11:29 on Sun 22 Jan.", "fact": "1950-01-21T07:18:54Z → 1950-01-22T08:28:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 21st, 11:55–12:43 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1603 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Mosul, 1950: Saturday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-21", "confidence": "determinate" } ], "quote": "In Mosul, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1950 falls on Saturday 21 January. Caturthī runs from 10:19 on Sat 21 Jan to 11:29 on Sun 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21224, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-01-21T10:18:54+03:00", "utc": "1950-01-21T07:18:54Z", "ms": -629397666434.5044 }, "end": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-21T10:18:54+03:00", "utc": "1950-01-21T07:18:54Z", "ms": -629397666434.5044 }, "end": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-01-21", "window": { "start": { "local": "1950-01-21T17:21:13+03:00", "utc": "1950-01-21T14:21:13Z", "ms": -629372327162.5289 }, "end": { "local": "1950-01-21T19:12:33+03:00", "utc": "1950-01-21T16:12:33Z", "ms": -629365646958.9619 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "1950-01-22", "window": { "start": { "local": "1950-01-22T17:22:16+03:00", "utc": "1950-01-22T14:22:16Z", "ms": -629285864487.3533 }, "end": { "local": "1950-01-22T19:13:23+03:00", "utc": "1950-01-22T16:13:23Z", "ms": -629279196686.6621 } }, "covered_min": 0, "window_min": 111, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:19 on Sat 21 Jan to 11:29 on Sun 22 Jan.", "fact": "1950-01-21T07:18:54Z → 1950-01-22T08:28:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:21–19:13 on the 21st, 17:22–19:13 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 111 of 111 minutes on the 21st and 0 of 111 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21224 s" }, { "step": "ruling", "text": "Tila Caturthī, Mosul, 1950: Saturday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-21", "confidence": "determinate" } ], "quote": "In Mosul, Tila Caturthī 1950 falls on Saturday 21 January. Caturthī runs from 10:19 on Sat 21 Jan to 11:29 on Sun 22 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1603, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "end": { "local": "1950-01-23T13:17:58+03:00", "utc": "1950-01-23T10:17:58Z", "ms": -629214121750.2759 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "end": { "local": "1950-01-23T13:17:58+03:00", "utc": "1950-01-23T10:17:58Z", "ms": -629214121750.2759 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-01-22", "window": { "start": { "local": "1950-01-22T11:55:15+03:00", "utc": "1950-01-22T08:55:15Z", "ms": -629305485061.5646 }, "end": { "local": "1950-01-22T12:43:15+03:00", "utc": "1950-01-22T09:43:15Z", "ms": -629302605061.5646 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-01-23", "window": { "start": { "local": "1950-01-23T11:55:31+03:00", "utc": "1950-01-23T08:55:31Z", "ms": -629219068752.6887 }, "end": { "local": "1950-01-23T12:43:31+03:00", "utc": "1950-01-23T09:43:31Z", "ms": -629216188752.6887 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 11:29 on Sun 22 Jan to 13:18 on Mon 23 Jan.", "fact": "1950-01-22T08:28:32Z → 1950-01-23T10:17:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 22nd, 11:56–12:44 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1603 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Mosul, 1950: Sunday 22 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-22", "confidence": "boundary" } ], "quote": "In Mosul, Śrī Pañcamī 1950 falls on Sunday 22 January. Pañcamī runs from 11:29 on Sun 22 Jan to 13:18 on Mon 23 Jan and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-22", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1603, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "end": { "local": "1950-01-23T13:17:58+03:00", "utc": "1950-01-23T10:17:58Z", "ms": -629214121750.2759 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-22T11:28:32+03:00", "utc": "1950-01-22T08:28:32Z", "ms": -629307088375.1357 }, "end": { "local": "1950-01-23T13:17:58+03:00", "utc": "1950-01-23T10:17:58Z", "ms": -629214121750.2759 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-01-22", "window": { "start": { "local": "1950-01-22T11:55:15+03:00", "utc": "1950-01-22T08:55:15Z", "ms": -629305485061.5646 }, "end": { "local": "1950-01-22T12:43:15+03:00", "utc": "1950-01-22T09:43:15Z", "ms": -629302605061.5646 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-01-23", "window": { "start": { "local": "1950-01-23T11:55:31+03:00", "utc": "1950-01-23T08:55:31Z", "ms": -629219068752.6887 }, "end": { "local": "1950-01-23T12:43:31+03:00", "utc": "1950-01-23T09:43:31Z", "ms": -629216188752.6887 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 11:29 on Sun 22 Jan to 13:18 on Mon 23 Jan.", "fact": "1950-01-22T08:28:32Z → 1950-01-23T10:17:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 22nd, 11:56–12:44 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1603 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Mosul, 1950: Sunday 22 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1950-01-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-23", "confidence": "boundary" } ], "quote": "In Mosul, Vasanta Pañcamī 1950 falls on Sunday 22 January. Pañcamī runs from 11:29 on Sun 22 Jan to 13:18 on Mon 23 Jan and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30219, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-01-24T15:38:51+03:00", "utc": "1950-01-24T12:38:51Z", "ms": -629119269476.2793 }, "end": { "local": "1950-01-25T18:18:01+03:00", "utc": "1950-01-25T15:18:01Z", "ms": -629023318895.4088 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-24T15:38:51+03:00", "utc": "1950-01-24T12:38:51Z", "ms": -629119269476.2793 }, "end": { "local": "1950-01-25T18:18:01+03:00", "utc": "1950-01-25T15:18:01Z", "ms": -629023318895.4088 } }, "kaala": "arunodaya", "days": [ { "local_date": "1950-01-24", "window": { "start": { "local": "1950-01-24T05:24:17+03:00", "utc": "1950-01-24T02:24:17Z", "ms": -629156143290.0421 }, "end": { "local": "1950-01-24T07:15:12+03:00", "utc": "1950-01-24T04:15:12Z", "ms": -629149488177.2473 } }, "covered_min": 0, "window_min": 111, "qualifies": false }, { "local_date": "1950-01-25", "window": { "start": { "local": "1950-01-25T05:23:56+03:00", "utc": "1950-01-25T02:23:56Z", "ms": -629069764347.8663 }, "end": { "local": "1950-01-25T07:14:38+03:00", "utc": "1950-01-25T04:14:38Z", "ms": -629063122199.3688 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 15:39 on Tue 24 Jan to 18:18 on Wed 25 Jan.", "fact": "1950-01-24T12:38:51Z → 1950-01-25T15:18:01Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:24–07:15 on the 24th, 05:24–07:15 on the 25th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 0 of 111 minutes on the 24th and 111 of 111 on the 25th.", "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 30219 s" }, { "step": "ruling", "text": "Ratha Saptamī, Mosul, 1950: Wednesday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-25", "confidence": "determinate" } ], "quote": "In Mosul, Ratha Saptamī 1950 falls on Wednesday 25 January. Saptamī runs from 15:39 on Tue 24 Jan to 18:18 on Wed 25 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-01-29", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15990, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-01-29T01:24:40+03:00", "utc": "1950-01-28T22:24:40Z", "ms": -628738519936.2238 }, "end": { "local": "1950-01-30T02:44:51+03:00", "utc": "1950-01-29T23:44:51Z", "ms": -628647308927.2827 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-29T01:24:40+03:00", "utc": "1950-01-28T22:24:40Z", "ms": -628738519936.2238 }, "end": { "local": "1950-01-30T02:44:51+03:00", "utc": "1950-01-29T23:44:51Z", "ms": -628647308927.2827 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-01-29", "window": { "start": { "local": "1950-01-29T07:12:04+03:00", "utc": "1950-01-29T04:12:04Z", "ms": -628717676072.407 }, "end": { "local": "1950-01-29T07:12:04+03:00", "utc": "1950-01-29T04:12:04Z", "ms": -628717676072.407 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-01-30", "window": { "start": { "local": "1950-01-30T07:11:21+03:00", "utc": "1950-01-30T04:11:21Z", "ms": -628631318853.775 }, "end": { "local": "1950-01-30T07:11:21+03:00", "utc": "1950-01-30T04:11:21Z", "ms": -628631318853.775 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:25 on Sun 29 Jan to 02:45 on Mon 30 Jan.", "fact": "1950-01-28T22:24:40Z → 1950-01-29T23:44:51Z" }, { "step": "kaala", "text": "Sunrise is at 07:12 on the 29th and 07:11 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 29th and is not on the 30th.", "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 15990 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Mosul, 1950: Sunday 29 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": "1950-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-29", "confidence": "determinate" } ], "quote": "In Mosul, Jayā Ekādaśī 1950 falls on Sunday 29 January. Ekādaśī runs from 01:25 on Sun 29 Jan to 02:45 on Mon 30 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30898, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-01-30T02:44:51+03:00", "utc": "1950-01-29T23:44:51Z", "ms": -628647308927.2827 }, "end": { "local": "1950-01-31T03:22:15+03:00", "utc": "1950-01-31T00:22:15Z", "ms": -628558665318.27 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-30T02:44:51+03:00", "utc": "1950-01-29T23:44:51Z", "ms": -628647308927.2827 }, "end": { "local": "1950-01-31T03:22:15+03:00", "utc": "1950-01-31T00:22:15Z", "ms": -628558665318.27 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-01-30", "window": { "start": { "local": "1950-01-30T11:57:03+03:00", "utc": "1950-01-30T08:57:03Z", "ms": -628614177458.97 }, "end": { "local": "1950-01-30T12:45:03+03:00", "utc": "1950-01-30T09:45:03Z", "ms": -628611297458.97 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-01-31", "window": { "start": { "local": "1950-01-31T11:57:12+03:00", "utc": "1950-01-31T08:57:12Z", "ms": -628527767741.7107 }, "end": { "local": "1950-01-31T12:45:12+03:00", "utc": "1950-01-31T09:45:12Z", "ms": -628524887741.7107 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:45 on Mon 30 Jan to 03:22 on Tue 31 Jan.", "fact": "1950-01-29T23:44:51Z → 1950-01-31T00:22:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 30th, 11:57–12:45 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30898 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Mosul, 1950: Monday 30 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-01-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-30", "confidence": "determinate" } ], "quote": "In Mosul, Bhīṣma Dvādaśī 1950 falls on Monday 30 January. Dvādaśī runs from 02:45 on Mon 30 Jan to 03:22 on Tue 31 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-01-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28568, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-01-31T03:22:15+03:00", "utc": "1950-01-31T00:22:15Z", "ms": -628558665318.27 }, "end": { "local": "1950-02-01T03:17:00+03:00", "utc": "1950-02-01T00:17:00Z", "ms": -628472579668.1759 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-01-31T03:22:15+03:00", "utc": "1950-01-31T00:22:15Z", "ms": -628558665318.27 }, "end": { "local": "1950-02-01T03:17:00+03:00", "utc": "1950-02-01T00:17:00Z", "ms": -628472579668.1759 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-01-30", "window": { "start": { "local": "1950-01-30T17:30:44+03:00", "utc": "1950-01-30T14:30:44Z", "ms": -628594156064.1649 }, "end": { "local": "1950-01-30T19:20:03+03:00", "utc": "1950-01-30T16:20:03Z", "ms": -628587597029.3496 } }, "covered_min": 0, "window_min": 109, "qualifies": false }, { "local_date": "1950-01-31", "window": { "start": { "local": "1950-01-31T17:31:48+03:00", "utc": "1950-01-31T14:31:48Z", "ms": -628507692180.371 }, "end": { "local": "1950-01-31T19:20:52+03:00", "utc": "1950-01-31T16:20:52Z", "ms": -628501147808.2905 } }, "covered_min": 109, "window_min": 109, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:22 on Tue 31 Jan to 03:17 on Wed 1 Feb.", "fact": "1950-01-31T00:22:15Z → 1950-02-01T00:17:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:31–19:20 on the 30th, 17:32–19:21 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 109 minutes on the 30th and 109 of 109 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28568 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Tuesday 31 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": "1950-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-01-31", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Tuesday 31 January. Trayodaśī runs from 03:22 on Tue 31 Jan to 03:17 on Wed 1 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-01-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33874, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-02-02T02:32:55+03:00", "utc": "1950-02-01T23:32:55Z", "ms": -628388824845.1078 }, "end": { "local": "1950-02-03T01:16:06+03:00", "utc": "1950-02-02T22:16:06Z", "ms": -628307033607.8469 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1950-02-02T02:32:55+03:00", "utc": "1950-02-01T23:32:55Z", "ms": -628388824845.1078 }, "end": { "local": "1950-02-03T01:16:06+03:00", "utc": "1950-02-02T22:16:06Z", "ms": -628307033607.8469 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-02-02", "window": { "start": { "local": "1950-02-02T11:57:29+03:00", "utc": "1950-02-02T08:57:29Z", "ms": -628354950803.8752 }, "end": { "local": "1950-02-02T12:45:29+03:00", "utc": "1950-02-02T09:45:29Z", "ms": -628352070803.8752 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-02-03", "window": { "start": { "local": "1950-02-03T11:57:36+03:00", "utc": "1950-02-03T08:57:36Z", "ms": -628268543575.0087 }, "end": { "local": "1950-02-03T12:45:36+03:00", "utc": "1950-02-03T09:45:36Z", "ms": -628265663575.0087 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:33 on Thu 2 Feb to 01:16 on Fri 3 Feb.", "fact": "1950-02-01T23:32:55Z → 1950-02-02T22:16:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 2nd, 11:58–12:46 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33874 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Mosul, 1950: Thursday 2 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": "1950-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-02", "confidence": "determinate" } ], "quote": "In Mosul, Māghī Pūrṇimā 1950 falls on Thursday 2 February. Pūrṇimā runs from 02:33 on Thu 2 Feb to 01:16 on Fri 3 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-02-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4254, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-02-05T19:22:24+03:00", "utc": "1950-02-05T16:22:24Z", "ms": -628069055683.6123 }, "end": { "local": "1950-02-06T17:06:19+03:00", "utc": "1950-02-06T14:06:19Z", "ms": -627990820754.5247 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-05T19:22:24+03:00", "utc": "1950-02-05T16:22:24Z", "ms": -628069055683.6123 }, "end": { "local": "1950-02-06T17:06:19+03:00", "utc": "1950-02-06T14:06:19Z", "ms": -627990820754.5247 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-02-05", "window": { "start": { "local": "1950-02-05T20:33:19+03:00", "utc": "1950-02-05T17:33:19Z", "ms": -628064801247.4016 }, "end": { "local": "1950-02-05T20:33:19+03:00", "utc": "1950-02-05T17:33:19Z", "ms": -628064801247.4016 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-02-06", "window": { "start": { "local": "1950-02-06T21:43:07+03:00", "utc": "1950-02-06T18:43:07Z", "ms": -627974213074.2233 }, "end": { "local": "1950-02-06T21:43:07+03:00", "utc": "1950-02-06T18:43:07Z", "ms": -627974213074.2233 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:22 on Sun 5 Feb to 17:06 on Mon 6 Feb.", "fact": "1950-02-05T16:22:24Z → 1950-02-06T14:06:19Z" }, { "step": "kaala", "text": "Moonrise is at 20:33 on the 5th and 21:43 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4254 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Sunday 5 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": "1950-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-05", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Sunday 5 February. Caturthī runs from 19:22 on Sun 5 Feb to 17:06 on Mon 6 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-02-12", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6514, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-02-12T05:11:10+03:00", "utc": "1950-02-12T02:11:10Z", "ms": -627515329559.9054 }, "end": { "local": "1950-02-13T03:49:30+03:00", "utc": "1950-02-13T00:49:30Z", "ms": -627433829743.943 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-12T05:11:10+03:00", "utc": "1950-02-12T02:11:10Z", "ms": -627515329559.9054 }, "end": { "local": "1950-02-13T03:49:30+03:00", "utc": "1950-02-13T00:49:30Z", "ms": -627433829743.943 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-02-12", "window": { "start": { "local": "1950-02-12T06:59:45+03:00", "utc": "1950-02-12T03:59:45Z", "ms": -627508815265.9948 }, "end": { "local": "1950-02-12T06:59:45+03:00", "utc": "1950-02-12T03:59:45Z", "ms": -627508815265.9948 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-02-13", "window": { "start": { "local": "1950-02-13T06:58:41+03:00", "utc": "1950-02-13T03:58:41Z", "ms": -627422478503.6656 }, "end": { "local": "1950-02-13T06:58:41+03:00", "utc": "1950-02-13T03:58:41Z", "ms": -627422478503.6656 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:11 on Sun 12 Feb to 03:50 on Mon 13 Feb.", "fact": "1950-02-12T02:11:10Z → 1950-02-13T00:49:30Z" }, { "step": "kaala", "text": "Sunrise is at 07:00 on the 12th and 06:59 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6514 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Mosul, 1950: Sunday 12 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": "1950-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-12", "confidence": "determinate" } ], "quote": "In Mosul, Vijayā Ekādaśī 1950 falls on Sunday 12 February. Ekādaśī runs from 05:11 on Sun 12 Feb to 03:50 on Mon 13 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-02-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-02-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23364, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-02-14T02:44:57+03:00", "utc": "1950-02-13T23:44:57Z", "ms": -627351302804.132 }, "end": { "local": "1950-02-15T02:01:15+03:00", "utc": "1950-02-14T23:01:15Z", "ms": -627267525487.3429 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-14T02:44:57+03:00", "utc": "1950-02-13T23:44:57Z", "ms": -627351302804.132 }, "end": { "local": "1950-02-15T02:01:15+03:00", "utc": "1950-02-14T23:01:15Z", "ms": -627267525487.3429 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-02-13", "window": { "start": { "local": "1950-02-13T17:45:28+03:00", "utc": "1950-02-13T14:45:28Z", "ms": -627383671562.8586 }, "end": { "local": "1950-02-13T19:31:06+03:00", "utc": "1950-02-13T16:31:06Z", "ms": -627377334416.5712 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1950-02-14", "window": { "start": { "local": "1950-02-14T17:46:30+03:00", "utc": "1950-02-14T14:46:30Z", "ms": -627297209807.1699 }, "end": { "local": "1950-02-14T19:31:50+03:00", "utc": "1950-02-14T16:31:50Z", "ms": -627290889649.1877 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:45 on Tue 14 Feb to 02:01 on Wed 15 Feb.", "fact": "1950-02-13T23:44:57Z → 1950-02-14T23:01:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:45–19:31 on the 13th, 17:47–19:32 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 13th and 105 of 105 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23364 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Tuesday 14 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": "1950-02-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-14", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Tuesday 14 February. Trayodaśī runs from 02:45 on Tue 14 Feb to 02:01 on Wed 15 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-02-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3423, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-02-15T02:01:15+03:00", "utc": "1950-02-14T23:01:15Z", "ms": -627267525487.3429 }, "end": { "local": "1950-02-16T01:42:31+03:00", "utc": "1950-02-15T22:42:31Z", "ms": -627182248585.0944 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-15T02:01:15+03:00", "utc": "1950-02-14T23:01:15Z", "ms": -627267525487.3429 }, "end": { "local": "1950-02-16T01:42:31+03:00", "utc": "1950-02-15T22:42:31Z", "ms": -627182248585.0944 } }, "kaala": "nishita", "days": [ { "local_date": "1950-02-14", "window": { "start": { "local": "1950-02-14T23:57:31+03:00", "utc": "1950-02-14T20:57:31Z", "ms": -627274949214.7366 }, "end": { "local": "1950-02-15T00:45:31+03:00", "utc": "1950-02-14T21:45:31Z", "ms": -627272069214.7366 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-02-15", "window": { "start": { "local": "1950-02-15T23:57:28+03:00", "utc": "1950-02-15T20:57:28Z", "ms": -627188551887.081 }, "end": { "local": "1950-02-16T00:45:28+03:00", "utc": "1950-02-15T21:45:28Z", "ms": -627185671887.081 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:01 on Wed 15 Feb to 01:43 on Thu 16 Feb.", "fact": "1950-02-14T23:01:15Z → 1950-02-15T22:42:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:58–00:46 on the 14th, 23:57–00:45 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 3423 s" }, { "step": "ruling", "text": "Mahāśivarātri, Mosul, 1950: Wednesday 15 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-15", "confidence": "determinate" } ], "quote": "In Mosul, Mahāśivarātri 1950 falls on Wednesday 15 February. Caturdaśī runs from 02:01 on Wed 15 Feb to 01:43 on Thu 16 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-02-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14437, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-02-20T05:40:42+03:00", "utc": "1950-02-20T02:40:42Z", "ms": -626822357970.4777 }, "end": { "local": "1950-02-21T07:56:56+03:00", "utc": "1950-02-21T04:56:56Z", "ms": -626727783507.9237 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-20T05:40:42+03:00", "utc": "1950-02-20T02:40:42Z", "ms": -626822357970.4777 }, "end": { "local": "1950-02-21T07:56:56+03:00", "utc": "1950-02-21T04:56:56Z", "ms": -626727783507.9237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-02-20", "window": { "start": { "local": "1950-02-20T11:57:40+03:00", "utc": "1950-02-20T08:57:40Z", "ms": -626799739685.7804 }, "end": { "local": "1950-02-20T12:45:40+03:00", "utc": "1950-02-20T09:45:40Z", "ms": -626796859685.7804 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-02-21", "window": { "start": { "local": "1950-02-21T11:57:34+03:00", "utc": "1950-02-21T08:57:34Z", "ms": -626713346009.157 }, "end": { "local": "1950-02-21T12:45:34+03:00", "utc": "1950-02-21T09:45:34Z", "ms": -626710466009.157 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:41 on Mon 20 Feb to 07:57 on Tue 21 Feb.", "fact": "1950-02-20T02:40:42Z → 1950-02-21T04:56:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 20th, 11:58–12:46 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14437 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Monday 20 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-20", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Monday 20 February. Caturthī runs from 05:41 on Mon 20 Feb to 07:57 on Tue 21 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-02-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-02-28", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-02-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37319, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-02-27T20:15:17+03:00", "utc": "1950-02-27T17:15:17Z", "ms": -626165082682.4548 }, "end": { "local": "1950-02-28T20:17:25+03:00", "utc": "1950-02-28T17:17:25Z", "ms": -626078555329.886 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-02-27T20:15:17+03:00", "utc": "1950-02-27T17:15:17Z", "ms": -626165082682.4548 }, "end": { "local": "1950-02-28T20:17:25+03:00", "utc": "1950-02-28T17:17:25Z", "ms": -626078555329.886 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-02-28", "window": { "start": { "local": "1950-02-28T06:40:43+03:00", "utc": "1950-02-28T03:40:43Z", "ms": -626127557066.6449 }, "end": { "local": "1950-02-28T06:40:43+03:00", "utc": "1950-02-28T03:40:43Z", "ms": -626127557066.6449 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-03-01", "window": { "start": { "local": "1950-03-01T06:39:24+03:00", "utc": "1950-03-01T03:39:24Z", "ms": -626041236217.1685 }, "end": { "local": "1950-03-01T06:39:24+03:00", "utc": "1950-03-01T03:39:24Z", "ms": -626041236217.1685 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:15 on Mon 27 Feb to 20:17 on Tue 28 Feb.", "fact": "1950-02-27T17:15:17Z → 1950-02-28T17:17:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:41 on the 28th and 06:39 on the 1st.", "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 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37319 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Mosul, 1950: Tuesday 28 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": "1950-02-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-02-28", "confidence": "determinate" } ], "quote": "In Mosul, Āmalakī Ekādaśī 1950 falls on Tuesday 28 February. Ekādaśī runs from 20:15 on Mon 27 Feb to 20:17 on Tue 28 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-02-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-03-01", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-01", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 242, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-03-01T19:33:00+03:00", "utc": "1950-03-01T16:33:00Z", "ms": -625994820188.2755 }, "end": { "local": "1950-03-02T18:06:17+03:00", "utc": "1950-03-02T15:06:17Z", "ms": -625913623498.2518 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-03-01T19:33:00+03:00", "utc": "1950-03-01T16:33:00Z", "ms": -625994820188.2755 }, "end": { "local": "1950-03-02T18:06:17+03:00", "utc": "1950-03-02T15:06:17Z", "ms": -625913623498.2518 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-03-01", "window": { "start": { "local": "1950-03-01T18:01:18+03:00", "utc": "1950-03-01T15:01:18Z", "ms": -626000322333.5132 }, "end": { "local": "1950-03-01T19:42:12+03:00", "utc": "1950-03-01T16:42:12Z", "ms": -625994268167.4905 } }, "covered_min": 9, "window_min": 101, "qualifies": true }, { "local_date": "1950-03-02", "window": { "start": { "local": "1950-03-02T18:02:14+03:00", "utc": "1950-03-02T15:02:14Z", "ms": -625913865937.3251 }, "end": { "local": "1950-03-02T19:42:50+03:00", "utc": "1950-03-02T16:42:50Z", "ms": -625907830031.8771 } }, "covered_min": 4, "window_min": 101, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:33 on Wed 1 Mar to 18:06 on Thu 2 Mar.", "fact": "1950-03-01T16:33:00Z → 1950-03-02T15:06:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:01–19:42 on the 1st, 18:02–19:43 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 9 of 101 minutes on the 1st and 4 of 101 on the 2nd.", "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 242 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Wednesday 1 March.", "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": "1950-03-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-01", "confidence": "boundary" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Wednesday 1 March. Trayodaśī runs from 19:33 on Wed 1 Mar to 18:06 on Thu 2 Mar and covers 9 of 101 minutes of pradoṣa that evening. It also reaches the next evening for 4 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 02 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-03-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1079, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-03-03T16:03:52+03:00", "utc": "1950-03-03T13:03:52Z", "ms": -625834567863.6918 }, "end": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-03-03T16:03:52+03:00", "utc": "1950-03-03T13:03:52Z", "ms": -625834567863.6918 }, "end": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 } }, "kaala": "sayahna", "days": [ { "local_date": "1950-03-03", "window": { "start": { "local": "1950-03-03T15:45:53+03:00", "utc": "1950-03-03T12:45:53Z", "ms": -625835647224.8867 }, "end": { "local": "1950-03-03T18:03:10+03:00", "utc": "1950-03-03T15:03:10Z", "ms": -625827409869.4922 } }, "covered_min": 119, "window_min": 137, "qualifies": true }, { "local_date": "1950-03-04", "window": { "start": { "local": "1950-03-04T15:46:21+03:00", "utc": "1950-03-04T12:46:21Z", "ms": -625749218866.5919 }, "end": { "local": "1950-03-04T18:04:06+03:00", "utc": "1950-03-04T15:04:06Z", "ms": -625740954118.7872 } }, "covered_min": 0, "window_min": 138, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:04 on Fri 3 Mar to 13:34 on Sat 4 Mar.", "fact": "1950-03-03T13:03:52Z → 1950-03-04T10:33:48Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:46–18:03 on the 3rd, 15:46–18:04 on the 4th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 119 of 137 minutes on the 3rd and 0 of 138 on the 4th.", "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 1079 s" }, { "step": "ruling", "text": "Holikā Dahana, Mosul, 1950: Friday 3 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holika-dahana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "not_evaluated": "The hour the row gives for the rite (\"it should be observed on second half of purnima at night\") is not tested: sāyāhna alone settles the day.", "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-03", "confidence": "determinate" } ], "quote": "In Mosul, Holikā Dahana 1950 falls on Friday 3 March. Pūrṇimā runs from 16:04 on Fri 3 Mar to 13:34 on Sat 4 Mar and covers 119 of 137 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1079, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-03-03T16:03:52+03:00", "utc": "1950-03-03T13:03:52Z", "ms": -625834567863.6918 }, "end": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1950-03-03T16:03:52+03:00", "utc": "1950-03-03T13:03:52Z", "ms": -625834567863.6918 }, "end": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 } }, "kaala": "sayahna", "days": [ { "local_date": "1950-03-03", "window": { "start": { "local": "1950-03-03T15:45:53+03:00", "utc": "1950-03-03T12:45:53Z", "ms": -625835647224.8867 }, "end": { "local": "1950-03-03T18:03:10+03:00", "utc": "1950-03-03T15:03:10Z", "ms": -625827409869.4922 } }, "covered_min": 119, "window_min": 137, "qualifies": true }, { "local_date": "1950-03-04", "window": { "start": { "local": "1950-03-04T15:46:21+03:00", "utc": "1950-03-04T12:46:21Z", "ms": -625749218866.5919 }, "end": { "local": "1950-03-04T18:04:06+03:00", "utc": "1950-03-04T15:04:06Z", "ms": -625740954118.7872 } }, "covered_min": 0, "window_min": 138, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1950-03-03", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:04 on Fri 3 Mar to 13:34 on Sat 4 Mar.", "fact": "1950-03-03T13:03:52Z → 1950-03-04T10:33:48Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:46–18:03 on the 3rd, 15:46–18:04 on the 4th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 119 of 137 minutes on the 3rd and 0 of 138 on the 4th.", "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 1079 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Friday 3 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Mosul, 1950: Saturday 4 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holi", "follows": { "festival": "holika-dahana", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-04", "confidence": "determinate" } ], "quote": "In Mosul, Holī 1950 falls on Saturday 4 March. It is kept the day after Holikā Dahana, which falls on Friday 3 March. Pūrṇimā runs from 16:04 on Fri 3 Mar to 13:34 on Sat 4 Mar and covers 119 of 137 minutes of sāyāhna on the 3rd.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15041, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 }, "end": { "local": "1950-03-05T10:44:42+03:00", "utc": "1950-03-05T07:44:42Z", "ms": -625680918296.6113 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-04T13:33:48+03:00", "utc": "1950-03-04T10:33:48Z", "ms": -625757171953.4275 }, "end": { "local": "1950-03-05T10:44:42+03:00", "utc": "1950-03-05T07:44:42Z", "ms": -625680918296.6113 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-03-04", "window": { "start": { "local": "1950-03-04T06:35:22+03:00", "utc": "1950-03-04T03:35:22Z", "ms": -625782277857.8105 }, "end": { "local": "1950-03-04T06:35:22+03:00", "utc": "1950-03-04T03:35:22Z", "ms": -625782277857.8105 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-03-05", "window": { "start": { "local": "1950-03-05T06:34:00+03:00", "utc": "1950-03-05T03:34:00Z", "ms": -625695959688.7534 }, "end": { "local": "1950-03-05T06:34:00+03:00", "utc": "1950-03-05T03:34:00Z", "ms": -625695959688.7534 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:34 on Sat 4 Mar to 10:45 on Sun 5 Mar.", "fact": "1950-03-04T10:33:48Z → 1950-03-05T07:44:42Z" }, { "step": "kaala", "text": "Sunrise is at 06:35 on the 4th and 06:34 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 15041 s" }, { "step": "ruling", "text": "Vasantotsava, Mosul, 1950: Sunday 5 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": "1950-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-05", "confidence": "determinate" } ], "quote": "In Mosul, Vasantotsava 1950 falls on Sunday 5 March. Pratipadā runs from 13:34 on Sat 4 Mar to 10:45 on Sun 5 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-03-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14137, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-03-07T04:43:32+03:00", "utc": "1950-03-07T01:43:32Z", "ms": -625529788219.7825 }, "end": { "local": "1950-03-08T01:47:15+03:00", "utc": "1950-03-07T22:47:15Z", "ms": -625453965172.4268 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-07T04:43:32+03:00", "utc": "1950-03-07T01:43:32Z", "ms": -625529788219.7825 }, "end": { "local": "1950-03-08T01:47:15+03:00", "utc": "1950-03-07T22:47:15Z", "ms": -625453965172.4268 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-03-06", "window": { "start": { "local": "1950-03-06T20:37:45+03:00", "utc": "1950-03-06T17:37:45Z", "ms": -625558935084.5775 }, "end": { "local": "1950-03-06T20:37:45+03:00", "utc": "1950-03-06T17:37:45Z", "ms": -625558935084.5775 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-03-07", "window": { "start": { "local": "1950-03-07T21:51:38+03:00", "utc": "1950-03-07T18:51:38Z", "ms": -625468101737.4174 }, "end": { "local": "1950-03-07T21:51:38+03:00", "utc": "1950-03-07T18:51:38Z", "ms": -625468101737.4174 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:44 on Tue 7 Mar to 01:47 on Wed 8 Mar.", "fact": "1950-03-07T01:43:32Z → 1950-03-07T22:47:15Z" }, { "step": "kaala", "text": "Moonrise is at 20:38 on the 6th and 21:52 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14137 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Tuesday 7 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": "1950-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-07", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Tuesday 7 March. Caturthī runs from 04:44 on Tue 7 Mar to 01:47 on Wed 8 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-03-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14979, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-03-10T18:31:25+03:00", "utc": "1950-03-10T15:31:25Z", "ms": -625220915305.0575 }, "end": { "local": "1950-03-11T16:51:43+03:00", "utc": "1950-03-11T13:51:43Z", "ms": -625140497264.0195 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-10T18:31:25+03:00", "utc": "1950-03-10T15:31:25Z", "ms": -625220915305.0575 }, "end": { "local": "1950-03-11T16:51:43+03:00", "utc": "1950-03-11T13:51:43Z", "ms": -625140497264.0195 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-10", "window": { "start": { "local": "1950-03-10T11:54:19+03:00", "utc": "1950-03-10T08:54:19Z", "ms": -625244741250.5542 }, "end": { "local": "1950-03-10T12:42:19+03:00", "utc": "1950-03-10T09:42:19Z", "ms": -625241861250.5542 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-03-11", "window": { "start": { "local": "1950-03-11T11:54:03+03:00", "utc": "1950-03-11T08:54:03Z", "ms": -625158356730.8523 }, "end": { "local": "1950-03-11T12:42:03+03:00", "utc": "1950-03-11T09:42:03Z", "ms": -625155476730.8523 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:31 on Fri 10 Mar to 16:52 on Sat 11 Mar.", "fact": "1950-03-10T15:31:25Z → 1950-03-11T13:51:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 10th, 11:54–12:42 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 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14979 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Mosul, 1950: Saturday 11 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-11", "confidence": "determinate" } ], "quote": "In Mosul, Śītalāṣṭamī 1950 falls on Saturday 11 March. Aṣṭamī runs from 18:31 on Fri 10 Mar to 16:52 on Sat 11 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-03-14", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29905, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-03-13T14:55:05+03:00", "utc": "1950-03-13T11:55:05Z", "ms": -624974694584.0585 }, "end": { "local": "1950-03-14T14:39:46+03:00", "utc": "1950-03-14T11:39:46Z", "ms": -624889213766.7267 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-13T14:55:05+03:00", "utc": "1950-03-13T11:55:05Z", "ms": -624974694584.0585 }, "end": { "local": "1950-03-14T14:39:46+03:00", "utc": "1950-03-14T11:39:46Z", "ms": -624889213766.7267 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-03-13", "window": { "start": { "local": "1950-03-13T06:22:47+03:00", "utc": "1950-03-13T03:22:47Z", "ms": -625005432691.7999 }, "end": { "local": "1950-03-13T06:22:47+03:00", "utc": "1950-03-13T03:22:47Z", "ms": -625005432691.7999 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-03-14", "window": { "start": { "local": "1950-03-14T06:21:21+03:00", "utc": "1950-03-14T03:21:21Z", "ms": -624919118636.1136 }, "end": { "local": "1950-03-14T06:21:21+03:00", "utc": "1950-03-14T03:21:21Z", "ms": -624919118636.1136 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:55 on Mon 13 Mar to 14:40 on Tue 14 Mar.", "fact": "1950-03-13T11:55:05Z → 1950-03-14T11:39:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 13th and 06:21 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 29905 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Mosul, 1950: Tuesday 14 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": "1950-03-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-14", "confidence": "determinate" } ], "quote": "In Mosul, Pāpamocanī Ekādaśī 1950 falls on Tuesday 14 March. Ekādaśī runs from 14:55 on Mon 13 Mar to 14:40 on Tue 14 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-03-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9593, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-03-15T14:53:13+03:00", "utc": "1950-03-15T11:53:13Z", "ms": -624802006932.2318 }, "end": { "local": "1950-03-16T15:35:02+03:00", "utc": "1950-03-16T12:35:02Z", "ms": -624713098087.7692 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-15T14:53:13+03:00", "utc": "1950-03-15T11:53:13Z", "ms": -624802006932.2318 }, "end": { "local": "1950-03-16T15:35:02+03:00", "utc": "1950-03-16T12:35:02Z", "ms": -624713098087.7692 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-03-15", "window": { "start": { "local": "1950-03-15T18:14:02+03:00", "utc": "1950-03-15T15:14:02Z", "ms": -624789958197.946 }, "end": { "local": "1950-03-15T19:50:37+03:00", "utc": "1950-03-15T16:50:37Z", "ms": -624784162625.9642 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "1950-03-16", "window": { "start": { "local": "1950-03-16T18:14:55+03:00", "utc": "1950-03-16T15:14:55Z", "ms": -624703505343.8491 }, "end": { "local": "1950-03-16T19:51:12+03:00", "utc": "1950-03-16T16:51:12Z", "ms": -624697728388.5406 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:53 on Wed 15 Mar to 15:35 on Thu 16 Mar.", "fact": "1950-03-15T11:53:13Z → 1950-03-16T12:35:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:14–19:51 on the 15th, 18:15–19:51 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 97 of 97 minutes on the 15th and 0 of 96 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 9593 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Wednesday 15 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": "1950-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-15", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Wednesday 15 March. Trayodaśī runs from 14:53 on Wed 15 Mar to 15:35 on Thu 16 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-03-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-03-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25635, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-03-16T15:35:02+03:00", "utc": "1950-03-16T12:35:02Z", "ms": -624713098087.7692 }, "end": { "local": "1950-03-17T16:44:26+03:00", "utc": "1950-03-17T13:44:26Z", "ms": -624622534264.4122 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-16T15:35:02+03:00", "utc": "1950-03-16T12:35:02Z", "ms": -624713098087.7692 }, "end": { "local": "1950-03-17T16:44:26+03:00", "utc": "1950-03-17T13:44:26Z", "ms": -624622534264.4122 } }, "kaala": "nishita", "days": [ { "local_date": "1950-03-16", "window": { "start": { "local": "1950-03-16T23:51:58+03:00", "utc": "1950-03-16T20:51:58Z", "ms": -624683281761.4421 }, "end": { "local": "1950-03-17T00:39:58+03:00", "utc": "1950-03-16T21:39:58Z", "ms": -624680401761.4421 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-03-17", "window": { "start": { "local": "1950-03-17T23:51:41+03:00", "utc": "1950-03-17T20:51:41Z", "ms": -624596898923.6826 }, "end": { "local": "1950-03-18T00:39:41+03:00", "utc": "1950-03-17T21:39:41Z", "ms": -624594018923.6826 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:35 on Thu 16 Mar to 16:44 on Fri 17 Mar.", "fact": "1950-03-16T12:35:02Z → 1950-03-17T13:44:26Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:52–00:40 on the 16th, 23:52–00:40 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25635 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Thursday 16 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-16", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Thursday 16 March. Caturdaśī runs from 15:35 on Thu 16 Mar to 16:44 on Fri 17 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-03-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20394, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-03-18T18:20:01+03:00", "utc": "1950-03-18T15:20:01Z", "ms": -624530399137.9856 }, "end": { "local": "1950-03-19T20:19:22+03:00", "utc": "1950-03-19T17:19:22Z", "ms": -624436838067.2659 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-18T18:20:01+03:00", "utc": "1950-03-18T15:20:01Z", "ms": -624530399137.9856 }, "end": { "local": "1950-03-19T20:19:22+03:00", "utc": "1950-03-19T17:19:22Z", "ms": -624436838067.2659 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-18", "window": { "start": { "local": "1950-03-18T11:52:07+03:00", "utc": "1950-03-18T08:52:07Z", "ms": -624553672681.5977 }, "end": { "local": "1950-03-18T12:40:07+03:00", "utc": "1950-03-18T09:40:07Z", "ms": -624550792681.5977 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-03-19", "window": { "start": { "local": "1950-03-19T11:51:50+03:00", "utc": "1950-03-19T08:51:50Z", "ms": -624467290117.7021 }, "end": { "local": "1950-03-19T12:39:50+03:00", "utc": "1950-03-19T09:39:50Z", "ms": -624464410117.7021 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 18:20 on Sat 18 Mar to 20:19 on Sun 19 Mar.", "fact": "1950-03-18T15:20:01Z → 1950-03-19T17:19:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 18th, 11:52–12:40 on the 19th.", "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 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 20394 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Mosul, 1950: Sunday 19 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-19", "confidence": "determinate" } ], "quote": "In Mosul, Navarātrārambha (Caitra) (Chaitra Navratri) 1950 falls on Sunday 19 March. Pratipadā runs from 18:20 on Sat 18 Mar to 20:19 on Sun 19 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35938, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-03-20T22:38:30+03:00", "utc": "1950-03-20T19:38:30Z", "ms": -624342089931.813 }, "end": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-20T22:38:30+03:00", "utc": "1950-03-20T19:38:30Z", "ms": -624342089931.813 }, "end": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-20", "window": { "start": { "local": "1950-03-20T11:51:32+03:00", "utc": "1950-03-20T08:51:32Z", "ms": -624380907719.3591 }, "end": { "local": "1950-03-20T12:39:32+03:00", "utc": "1950-03-20T09:39:32Z", "ms": -624378027719.3591 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-03-21", "window": { "start": { "local": "1950-03-21T11:51:15+03:00", "utc": "1950-03-21T08:51:15Z", "ms": -624294525468.8782 }, "end": { "local": "1950-03-21T12:39:15+03:00", "utc": "1950-03-21T09:39:15Z", "ms": -624291645468.8782 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:39 on Mon 20 Mar to 01:11 on Wed 22 Mar.", "fact": "1950-03-20T19:38:30Z → 1950-03-21T22:11:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 20th, 11:51–12:39 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35938 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Mosul, 1950: Tuesday 21 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-21", "confidence": "determinate" } ], "quote": "In Mosul, Gaurī Tṛtīyā (Gangaur) 1950 falls on Tuesday 21 March. Tṛtīyā runs from 22:39 on Mon 20 Mar to 01:11 on Wed 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35938, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-03-20T22:38:30+03:00", "utc": "1950-03-20T19:38:30Z", "ms": -624342089931.813 }, "end": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-20T22:38:30+03:00", "utc": "1950-03-20T19:38:30Z", "ms": -624342089931.813 }, "end": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-20", "window": { "start": { "local": "1950-03-20T11:51:32+03:00", "utc": "1950-03-20T08:51:32Z", "ms": -624380907719.3591 }, "end": { "local": "1950-03-20T12:39:32+03:00", "utc": "1950-03-20T09:39:32Z", "ms": -624378027719.3591 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-03-21", "window": { "start": { "local": "1950-03-21T11:51:15+03:00", "utc": "1950-03-21T08:51:15Z", "ms": -624294525468.8782 }, "end": { "local": "1950-03-21T12:39:15+03:00", "utc": "1950-03-21T09:39:15Z", "ms": -624291645468.8782 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:39 on Mon 20 Mar to 01:11 on Wed 22 Mar.", "fact": "1950-03-20T19:38:30Z → 1950-03-21T22:11:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 20th, 11:51–12:39 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35938 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Mosul, 1950: Tuesday 21 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-21", "confidence": "determinate" } ], "quote": "In Mosul, Saubhāgya Śayana Vrata 1950 falls on Tuesday 21 March. Tṛtīyā runs from 22:39 on Mon 20 Mar to 01:11 on Wed 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-03-22", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28856, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 }, "end": { "local": "1950-03-23T03:49:42+03:00", "utc": "1950-03-23T00:49:42Z", "ms": -624150617505.1691 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-22T01:11:23+03:00", "utc": "1950-03-21T22:11:23Z", "ms": -624246516652.4718 }, "end": { "local": "1950-03-23T03:49:42+03:00", "utc": "1950-03-23T00:49:42Z", "ms": -624150617505.1691 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-22", "window": { "start": { "local": "1950-03-22T11:50:57+03:00", "utc": "1950-03-22T08:50:57Z", "ms": -624208143348.3547 }, "end": { "local": "1950-03-22T12:38:57+03:00", "utc": "1950-03-22T09:38:57Z", "ms": -624205263348.3547 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-03-23", "window": { "start": { "local": "1950-03-23T11:50:39+03:00", "utc": "1950-03-23T08:50:39Z", "ms": -624121761339.6522 }, "end": { "local": "1950-03-23T12:38:39+03:00", "utc": "1950-03-23T09:38:39Z", "ms": -624118881339.6522 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:11 on Wed 22 Mar to 03:50 on Thu 23 Mar.", "fact": "1950-03-21T22:11:23Z → 1950-03-23T00:49:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 22nd, 11:51–12:39 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "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 28856 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Wednesday 22 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": "1950-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-22", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Wednesday 22 March. Caturthī runs from 01:11 on Wed 22 Mar to 03:50 on Thu 23 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-03-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19635, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-03-23T03:49:42+03:00", "utc": "1950-03-23T00:49:42Z", "ms": -624150617505.1691 }, "end": { "local": "1950-03-24T06:23:05+03:00", "utc": "1950-03-24T03:23:05Z", "ms": -624055014896.1433 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-23T03:49:42+03:00", "utc": "1950-03-23T00:49:42Z", "ms": -624150617505.1691 }, "end": { "local": "1950-03-24T06:23:05+03:00", "utc": "1950-03-24T03:23:05Z", "ms": -624055014896.1433 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-23", "window": { "start": { "local": "1950-03-23T11:50:39+03:00", "utc": "1950-03-23T08:50:39Z", "ms": -624121761339.6522 }, "end": { "local": "1950-03-23T12:38:39+03:00", "utc": "1950-03-23T09:38:39Z", "ms": -624118881339.6522 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-03-24", "window": { "start": { "local": "1950-03-24T11:50:21+03:00", "utc": "1950-03-24T08:50:21Z", "ms": -624035379424.3965 }, "end": { "local": "1950-03-24T12:38:21+03:00", "utc": "1950-03-24T09:38:21Z", "ms": -624032499424.3965 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:50 on Thu 23 Mar to 06:23 on Fri 24 Mar.", "fact": "1950-03-23T00:49:42Z → 1950-03-24T03:23:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 23rd, 11:50–12:38 on the 24th.", "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 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 19635 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Mosul, 1950: Thursday 23 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-23", "confidence": "determinate" } ], "quote": "In Mosul, Lakṣmī Pañcamī 1950 falls on Thursday 23 March. Pañcamī runs from 03:50 on Thu 23 Mar to 06:23 on Fri 24 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 576, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-03-26T10:28:47+03:00", "utc": "1950-03-26T07:28:47Z", "ms": -623867473234.053 }, "end": { "local": "1950-03-27T11:39:50+03:00", "utc": "1950-03-27T08:39:50Z", "ms": -623776810349.4292 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-26T10:28:47+03:00", "utc": "1950-03-26T07:28:47Z", "ms": -623867473234.053 }, "end": { "local": "1950-03-27T11:39:50+03:00", "utc": "1950-03-27T08:39:50Z", "ms": -623776810349.4292 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-26", "window": { "start": { "local": "1950-03-26T11:49:44+03:00", "utc": "1950-03-26T08:49:44Z", "ms": -623862615799.4812 }, "end": { "local": "1950-03-26T12:37:44+03:00", "utc": "1950-03-26T09:37:44Z", "ms": -623859735799.4812 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-03-27", "window": { "start": { "local": "1950-03-27T11:49:26+03:00", "utc": "1950-03-27T08:49:26Z", "ms": -623776234051.75 }, "end": { "local": "1950-03-27T12:37:26+03:00", "utc": "1950-03-27T09:37:26Z", "ms": -623773354051.75 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:29 on Sun 26 Mar to 11:40 on Mon 27 Mar.", "fact": "1950-03-26T07:28:47Z → 1950-03-27T08:39:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 26th, 11:49–12:37 on the 27th.", "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 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 576 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Mosul, 1950: Sunday 26 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-27", "confidence": "determinate" } ], "quote": "In Mosul, Bhavānī Utpatti 1950 falls on Sunday 26 March. Aṣṭamī runs from 10:29 on Sun 26 Mar to 11:40 on Mon 27 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-27", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 576, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1950-03-27T11:39:50+03:00", "utc": "1950-03-27T08:39:50Z", "ms": -623776810349.4292 }, "end": { "local": "1950-03-28T12:06:12+03:00", "utc": "1950-03-28T09:06:12Z", "ms": -623688828196.3171 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-27T11:39:50+03:00", "utc": "1950-03-27T08:39:50Z", "ms": -623776810349.4292 }, "end": { "local": "1950-03-28T12:06:12+03:00", "utc": "1950-03-28T09:06:12Z", "ms": -623688828196.3171 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-27", "window": { "start": { "local": "1950-03-27T11:49:26+03:00", "utc": "1950-03-27T08:49:26Z", "ms": -623776234051.75 }, "end": { "local": "1950-03-27T12:37:26+03:00", "utc": "1950-03-27T09:37:26Z", "ms": -623773354051.75 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-03-28", "window": { "start": { "local": "1950-03-28T11:49:08+03:00", "utc": "1950-03-28T08:49:08Z", "ms": -623689852321.207 }, "end": { "local": "1950-03-28T12:37:08+03:00", "utc": "1950-03-28T09:37:08Z", "ms": -623686972321.207 } }, "covered_min": 17, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 11:40 on Mon 27 Mar to 12:06 on Tue 28 Mar.", "fact": "1950-03-27T08:39:50Z → 1950-03-28T09:06:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 27th, 11:49–12:37 on the 28th.", "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 27th and 17 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 576 s" }, { "step": "ruling", "text": "Rāma Navamī, Mosul, 1950: Monday 27 March.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1950-03-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-27", "confidence": "boundary" } ], "quote": "In Mosul, Rāma Navamī 1950 falls on Monday 27 March. Navamī runs from 11:40 on Mon 27 Mar to 12:06 on Tue 28 Mar and covers all of madhyāhna that midday. It also reaches the next midday for 17 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/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-03-30", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16649, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-03-29T11:44:38+03:00", "utc": "1950-03-29T08:44:38Z", "ms": -623603721898.8518 }, "end": { "local": "1950-03-30T10:35:33+03:00", "utc": "1950-03-30T07:35:33Z", "ms": -623521466892.2733 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-29T11:44:38+03:00", "utc": "1950-03-29T08:44:38Z", "ms": -623603721898.8518 }, "end": { "local": "1950-03-30T10:35:33+03:00", "utc": "1950-03-30T07:35:33Z", "ms": -623521466892.2733 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-03-29", "window": { "start": { "local": "1950-03-29T05:59:31+03:00", "utc": "1950-03-29T02:59:31Z", "ms": -623624428501.0753 }, "end": { "local": "1950-03-29T05:59:31+03:00", "utc": "1950-03-29T02:59:31Z", "ms": -623624428501.0753 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-03-30", "window": { "start": { "local": "1950-03-30T05:58:04+03:00", "utc": "1950-03-30T02:58:04Z", "ms": -623538115916.0687 }, "end": { "local": "1950-03-30T05:58:04+03:00", "utc": "1950-03-30T02:58:04Z", "ms": -623538115916.0687 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:45 on Wed 29 Mar to 10:36 on Thu 30 Mar.", "fact": "1950-03-29T08:44:38Z → 1950-03-30T07:35:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 29th and 05:58 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 29th and is on the 30th.", "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 16649 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Mosul, 1950: Thursday 30 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": "1950-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-30", "confidence": "determinate" } ], "quote": "In Mosul, Kāmadā Ekādaśī 1950 falls on Thursday 30 March. Ekādaśī runs from 11:45 on Wed 29 Mar to 10:36 on Thu 30 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-03-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11140, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-03-31T08:42:33+03:00", "utc": "1950-03-31T05:42:33Z", "ms": -623441846999.6772 }, "end": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-31T08:42:33+03:00", "utc": "1950-03-31T05:42:33Z", "ms": -623441846999.6772 }, "end": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-03-31", "window": { "start": { "local": "1950-03-31T11:48:13+03:00", "utc": "1950-03-31T08:48:13Z", "ms": -623430707028.7024 }, "end": { "local": "1950-03-31T12:36:13+03:00", "utc": "1950-03-31T09:36:13Z", "ms": -623427827028.7024 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-04-01", "window": { "start": { "local": "1950-04-01T11:47:55+03:00", "utc": "1950-04-01T08:47:55Z", "ms": -623344325159.1172 }, "end": { "local": "1950-04-01T12:35:55+03:00", "utc": "1950-04-01T09:35:55Z", "ms": -623341445159.1172 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:43 on Fri 31 Mar to 06:12 on Sat 1 Apr.", "fact": "1950-03-31T05:42:33Z → 1950-04-01T03:11:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 31st, 11:48–12:36 on the 1st.", "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 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11140 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Mosul, 1950: Friday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-31", "confidence": "determinate" } ], "quote": "In Mosul, Anaṅga Trayodaśī 1950 falls on Friday 31 March. Trayodaśī runs from 08:43 on Fri 31 Mar to 06:12 on Sat 1 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-03-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35116, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-03-31T08:42:33+03:00", "utc": "1950-03-31T05:42:33Z", "ms": -623441846999.6772 }, "end": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-03-31T08:42:33+03:00", "utc": "1950-03-31T05:42:33Z", "ms": -623441846999.6772 }, "end": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-03-31", "window": { "start": { "local": "1950-03-31T18:27:49+03:00", "utc": "1950-03-31T15:27:49Z", "ms": -623406730881.3374 }, "end": { "local": "1950-03-31T19:59:28+03:00", "utc": "1950-03-31T16:59:28Z", "ms": -623401232130.5337 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "1950-04-01", "window": { "start": { "local": "1950-04-01T18:28:40+03:00", "utc": "1950-04-01T15:28:40Z", "ms": -623320280067.9247 }, "end": { "local": "1950-04-01T20:00:00+03:00", "utc": "1950-04-01T17:00:00Z", "ms": -623314799673.2384 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:43 on Fri 31 Mar to 06:12 on Sat 1 Apr.", "fact": "1950-03-31T05:42:33Z → 1950-04-01T03:11:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:28–19:59 on the 31st, 18:29–20:00 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 92 of 92 minutes on the 31st and 0 of 91 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 35116 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Friday 31 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": "1950-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-03-31", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Friday 31 March. Trayodaśī runs from 08:43 on Fri 31 Mar to 06:12 on Sat 1 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20172, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 }, "end": { "local": "1950-04-02T03:10:50+03:00", "utc": "1950-04-02T00:10:50Z", "ms": -623288950463.4983 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-04-01T06:11:42+03:00", "utc": "1950-04-01T03:11:42Z", "ms": -623364497586.8511 }, "end": { "local": "1950-04-02T03:10:50+03:00", "utc": "1950-04-02T00:10:50Z", "ms": -623288950463.4983 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-01", "window": { "start": { "local": "1950-04-01T11:47:55+03:00", "utc": "1950-04-01T08:47:55Z", "ms": -623344325159.1172 }, "end": { "local": "1950-04-01T12:35:55+03:00", "utc": "1950-04-01T09:35:55Z", "ms": -623341445159.1172 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-04-02", "window": { "start": { "local": "1950-04-02T11:47:37+03:00", "utc": "1950-04-02T08:47:37Z", "ms": -623257943198.8457 }, "end": { "local": "1950-04-02T12:35:37+03:00", "utc": "1950-04-02T09:35:37Z", "ms": -623255063198.8457 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:12 on Sat 1 Apr to 03:11 on Sun 2 Apr.", "fact": "1950-04-01T03:11:42Z → 1950-04-02T00:10:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 1st, 11:48–12:36 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20172 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Mosul, 1950: Saturday 1 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": "1950-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-01", "confidence": "determinate" } ], "quote": "In Mosul, Viṣṇudamanaka Caturdaśī 1950 falls on Saturday 1 April. Caturdaśī runs from 06:12 on Sat 1 Apr to 03:11 on Sun 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31007, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-04-02T03:10:50+03:00", "utc": "1950-04-02T00:10:50Z", "ms": -623288950463.4983 }, "end": { "local": "1950-04-02T23:48:47+03:00", "utc": "1950-04-02T20:48:47Z", "ms": -623214672759.2601 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1950-04-02T03:10:50+03:00", "utc": "1950-04-02T00:10:50Z", "ms": -623288950463.4983 }, "end": { "local": "1950-04-02T23:48:47+03:00", "utc": "1950-04-02T20:48:47Z", "ms": -623214672759.2601 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-02", "window": { "start": { "local": "1950-04-02T11:47:37+03:00", "utc": "1950-04-02T08:47:37Z", "ms": -623257943198.8457 }, "end": { "local": "1950-04-02T12:35:37+03:00", "utc": "1950-04-02T09:35:37Z", "ms": -623255063198.8457 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-04-03", "window": { "start": { "local": "1950-04-03T11:47:19+03:00", "utc": "1950-04-03T08:47:19Z", "ms": -623171561124.1852 }, "end": { "local": "1950-04-03T12:35:19+03:00", "utc": "1950-04-03T09:35:19Z", "ms": -623168681124.1852 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 03:11 on Sun 2 Apr to 23:49 on Sun 2 Apr.", "fact": "1950-04-02T00:10:50Z → 1950-04-02T20:48:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 2nd, 11:47–12:35 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31007 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Mosul, 1950: Sunday 2 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": "1950-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-02", "confidence": "determinate" } ], "quote": "In Mosul, Caitrī Pūrṇimā 1950 falls on Sunday 2 April. Pūrṇimā runs from 03:11 on Sun 2 Apr to 23:49 on Sun 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-04-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31938, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-04-05T13:10:48+03:00", "utc": "1950-04-05T10:10:48Z", "ms": -622993752301.0667 }, "end": { "local": "1950-04-06T09:58:47+03:00", "utc": "1950-04-06T06:58:47Z", "ms": -622918872705.2451 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-05T13:10:48+03:00", "utc": "1950-04-05T10:10:48Z", "ms": -622993752301.0667 }, "end": { "local": "1950-04-06T09:58:47+03:00", "utc": "1950-04-06T06:58:47Z", "ms": -622918872705.2451 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-04-05", "window": { "start": { "local": "1950-04-05T22:03:06+03:00", "utc": "1950-04-05T19:03:06Z", "ms": -622961814167.5741 }, "end": { "local": "1950-04-05T22:03:06+03:00", "utc": "1950-04-05T19:03:06Z", "ms": -622961814167.5741 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-04-06", "window": { "start": { "local": "1950-04-06T23:19:30+03:00", "utc": "1950-04-06T20:19:30Z", "ms": -622870829691.5854 }, "end": { "local": "1950-04-06T23:19:30+03:00", "utc": "1950-04-06T20:19:30Z", "ms": -622870829691.5854 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:11 on Wed 5 Apr to 09:59 on Thu 6 Apr.", "fact": "1950-04-05T10:10:48Z → 1950-04-06T06:58:47Z" }, { "step": "kaala", "text": "Moonrise is at 22:03 on the 5th and 23:20 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31938 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Wednesday 5 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": "1950-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-05", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Wednesday 5 April. Caturthī runs from 13:11 on Wed 5 Apr to 09:59 on Thu 6 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-04-12", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8235, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-04-12T02:22:40+03:00", "utc": "1950-04-11T23:22:40Z", "ms": -622427840203.4417 }, "end": { "local": "1950-04-13T03:20:56+03:00", "utc": "1950-04-13T00:20:56Z", "ms": -622337943844.2279 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-12T02:22:40+03:00", "utc": "1950-04-11T23:22:40Z", "ms": -622427840203.4417 }, "end": { "local": "1950-04-13T03:20:56+03:00", "utc": "1950-04-13T00:20:56Z", "ms": -622337943844.2279 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-04-12", "window": { "start": { "local": "1950-04-12T05:39:33+03:00", "utc": "1950-04-12T02:39:33Z", "ms": -622416026892.3285 }, "end": { "local": "1950-04-12T05:39:33+03:00", "utc": "1950-04-12T02:39:33Z", "ms": -622416026892.3285 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-04-13", "window": { "start": { "local": "1950-04-13T05:38:11+03:00", "utc": "1950-04-13T02:38:11Z", "ms": -622329709319.0724 }, "end": { "local": "1950-04-13T05:38:11+03:00", "utc": "1950-04-13T02:38:11Z", "ms": -622329709319.0724 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:23 on Wed 12 Apr to 03:21 on Thu 13 Apr.", "fact": "1950-04-11T23:22:40Z → 1950-04-13T00:20:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:40 on the 12th and 05:38 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8235 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Mosul, 1950: Wednesday 12 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": "1950-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-12", "confidence": "determinate" } ], "quote": "In Mosul, Varūthinī Ekādaśī 1950 falls on Wednesday 12 April. Ekādaśī runs from 02:23 on Wed 12 Apr to 03:21 on Thu 13 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-04-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37466, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1950-04-13T19:12:23+03:00", "utc": "1950-04-13T16:12:23Z", "ms": -622280856741.0786 }, "end": { "local": "1950-05-14T16:08:16+03:00", "utc": "1950-05-14T13:08:16Z", "ms": -619613504165.2479 } }, "span": { "of": "transit", "start": { "local": "1950-04-13T19:12:23+03:00", "utc": "1950-04-13T16:12:23Z", "ms": -622280856741.0786 }, "end": { "local": "1950-04-13T19:12:23+03:00", "utc": "1950-04-13T16:12:23Z", "ms": -622280856741.0786 } }, "kaala": "day", "days": [ { "local_date": "1950-04-13", "window": { "start": { "local": "1950-04-13T05:38:11+03:00", "utc": "1950-04-13T02:38:11Z", "ms": -622329709319.0724 }, "end": { "local": "1950-04-14T05:36:49+03:00", "utc": "1950-04-14T02:36:49Z", "ms": -622243391165.1504 } }, "covered_min": 1, "window_min": 1439, "qualifies": true }, { "local_date": "1950-04-14", "window": { "start": { "local": "1950-04-14T05:36:49+03:00", "utc": "1950-04-14T02:36:49Z", "ms": -622243391165.1504 }, "end": { "local": "1950-04-15T05:35:28+03:00", "utc": "1950-04-15T02:35:28Z", "ms": -622157072402.7667 } }, "covered_min": 0, "window_min": 1439, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 19:12 on Thu 13 Apr.", "fact": "1950-04-13T16:12:23Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:38 on the 13th, and from 05:37 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 37466 s" }, { "step": "ruling", "text": "Vaiśākhī, Mosul, 1950: Thursday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1950-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1950-04-14", "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 Mosul, Vaiśākhī 1950 falls on Thursday 13 April. The Sun enters Meṣa at 19:12 on Thu 13 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-04-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31425, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-04-14T04:50:19+03:00", "utc": "1950-04-14T01:50:19Z", "ms": -622246180512.4059 }, "end": { "local": "1950-04-15T06:44:56+03:00", "utc": "1950-04-15T03:44:56Z", "ms": -622152903652.4225 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-14T04:50:19+03:00", "utc": "1950-04-14T01:50:19Z", "ms": -622246180512.4059 }, "end": { "local": "1950-04-15T06:44:56+03:00", "utc": "1950-04-15T03:44:56Z", "ms": -622152903652.4225 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-04-13", "window": { "start": { "local": "1950-04-13T18:38:51+03:00", "utc": "1950-04-13T15:38:51Z", "ms": -622282869288.3192 }, "end": { "local": "1950-04-13T20:06:34+03:00", "utc": "1950-04-13T17:06:34Z", "ms": -622277605538.5634 } }, "covered_min": 0, "window_min": 88, "qualifies": false }, { "local_date": "1950-04-14", "window": { "start": { "local": "1950-04-14T18:39:42+03:00", "utc": "1950-04-14T15:39:42Z", "ms": -622196418059.2455 }, "end": { "local": "1950-04-14T20:07:08+03:00", "utc": "1950-04-14T17:07:08Z", "ms": -622191171971.715 } }, "covered_min": 87, "window_min": 87, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:50 on Fri 14 Apr to 06:45 on Sat 15 Apr.", "fact": "1950-04-14T01:50:19Z → 1950-04-15T03:44:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:07 on the 13th, 18:40–20:07 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 88 minutes on the 13th and 87 of 87 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31425 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Friday 14 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": "1950-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-14", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Friday 14 April. Trayodaśī runs from 04:50 on Fri 14 Apr to 06:45 on Sat 15 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-04-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-04-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22402, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-04-15T06:44:56+03:00", "utc": "1950-04-15T03:44:56Z", "ms": -622152903652.4225 }, "end": { "local": "1950-04-16T08:58:37+03:00", "utc": "1950-04-16T05:58:37Z", "ms": -622058482637.2313 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-15T06:44:56+03:00", "utc": "1950-04-15T03:44:56Z", "ms": -622152903652.4225 }, "end": { "local": "1950-04-16T08:58:37+03:00", "utc": "1950-04-16T05:58:37Z", "ms": -622058482637.2313 } }, "kaala": "nishita", "days": [ { "local_date": "1950-04-14", "window": { "start": { "local": "1950-04-14T23:43:35+03:00", "utc": "1950-04-14T20:43:35Z", "ms": -622178185231.0061 }, "end": { "local": "1950-04-15T00:31:35+03:00", "utc": "1950-04-14T21:31:35Z", "ms": -622175305231.0061 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-04-15", "window": { "start": { "local": "1950-04-15T23:43:20+03:00", "utc": "1950-04-15T20:43:20Z", "ms": -622091799886.548 }, "end": { "local": "1950-04-16T00:31:20+03:00", "utc": "1950-04-15T21:31:20Z", "ms": -622088919886.548 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:45 on Sat 15 Apr to 08:59 on Sun 16 Apr.", "fact": "1950-04-15T03:44:56Z → 1950-04-16T05:58:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:44–00:32 on the 14th, 23:43–00:31 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22402 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Saturday 15 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": "1950-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-15", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Saturday 15 April. Caturdaśī runs from 06:45 on Sat 15 Apr to 08:59 on Sun 16 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23922, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-04-19T16:33:28+03:00", "utc": "1950-04-19T13:33:28Z", "ms": -621771992434.7681 }, "end": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-19T16:33:28+03:00", "utc": "1950-04-19T13:33:28Z", "ms": -621771992434.7681 }, "end": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 } }, "kaala": "purvahna", "days": [ { "local_date": "1950-04-19", "window": { "start": { "local": "1950-04-19T05:30:09+03:00", "utc": "1950-04-19T02:30:09Z", "ms": -621811790720.192 }, "end": { "local": "1950-04-19T09:54:46+03:00", "utc": "1950-04-19T06:54:46Z", "ms": -621795914161.9332 } }, "covered_min": 0, "window_min": 265, "qualifies": false }, { "local_date": "1950-04-20", "window": { "start": { "local": "1950-04-20T05:28:51+03:00", "utc": "1950-04-20T02:28:51Z", "ms": -621725468505.0488 }, "end": { "local": "1950-04-20T09:54:11+03:00", "utc": "1950-04-20T06:54:11Z", "ms": -621709548835.0527 } }, "covered_min": 265, "window_min": 265, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:33 on Wed 19 Apr to 19:02 on Thu 20 Apr.", "fact": "1950-04-19T13:33:28Z → 1950-04-20T16:02:15Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:30–09:55 on the 19th, 05:29–09:54 on the 20th.", "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 265 minutes on the 19th and 265 of 265 on the 20th.", "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 23922 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Mosul, 1950: Thursday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-20", "confidence": "determinate" } ], "quote": "In Mosul, Akṣaya Tṛtīyā 1950 falls on Thursday 20 April. Tṛtīyā runs from 16:33 on Wed 19 Apr to 19:02 on Thu 20 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1044, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-04-19T16:33:28+03:00", "utc": "1950-04-19T13:33:28Z", "ms": -621771992434.7681 }, "end": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-19T16:33:28+03:00", "utc": "1950-04-19T13:33:28Z", "ms": -621771992434.7681 }, "end": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-04-19", "window": { "start": { "local": "1950-04-19T18:43:59+03:00", "utc": "1950-04-19T15:43:59Z", "ms": -621764161045.4156 }, "end": { "local": "1950-04-19T20:09:58+03:00", "utc": "1950-04-19T17:09:58Z", "ms": -621759002040.0334 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "1950-04-20", "window": { "start": { "local": "1950-04-20T18:44:51+03:00", "utc": "1950-04-20T15:44:51Z", "ms": -621677709495.0605 }, "end": { "local": "1950-04-20T20:10:32+03:00", "utc": "1950-04-20T17:10:32Z", "ms": -621672567631.4022 } }, "covered_min": 17, "window_min": 86, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:33 on Wed 19 Apr to 19:02 on Thu 20 Apr.", "fact": "1950-04-19T13:33:28Z → 1950-04-20T16:02:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:10 on the 19th, 18:45–20:11 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 86 of 86 minutes on the 19th and 17 of 86 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both evenings qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1044 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Mosul, 1950: Thursday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-20", "confidence": "determinate" } ], "quote": "In Mosul, Paraśurāma Jayantī 1950 falls on Thursday 20 April. Tṛtīyā runs from 16:33 on Wed 19 Apr to 19:02 on Thu 20 Apr and covers 17 of 86 minutes of pradoṣa that evening. It also reaches the previous evening for 86 minutes; by the rule the second evening is taken.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-04-21", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23484, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 }, "end": { "local": "1950-04-21T21:18:04+03:00", "utc": "1950-04-21T18:18:04Z", "ms": -621582115545.9454 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-20T19:02:15+03:00", "utc": "1950-04-20T16:02:15Z", "ms": -621676665018.7018 }, "end": { "local": "1950-04-21T21:18:04+03:00", "utc": "1950-04-21T18:18:04Z", "ms": -621582115545.9454 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-20", "window": { "start": { "local": "1950-04-20T11:42:51+03:00", "utc": "1950-04-20T08:42:51Z", "ms": -621703029000.0547 }, "end": { "local": "1950-04-20T12:30:51+03:00", "utc": "1950-04-20T09:30:51Z", "ms": -621700149000.0547 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-04-21", "window": { "start": { "local": "1950-04-21T11:42:38+03:00", "utc": "1950-04-21T08:42:38Z", "ms": -621616641712.7616 }, "end": { "local": "1950-04-21T12:30:38+03:00", "utc": "1950-04-21T09:30:38Z", "ms": -621613761712.7616 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:02 on Thu 20 Apr to 21:18 on Fri 21 Apr.", "fact": "1950-04-20T16:02:15Z → 1950-04-21T18:18:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 20th, 11:43–12:31 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23484 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Friday 21 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": "1950-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-21", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Friday 21 April. Caturthī runs from 19:02 on Thu 20 Apr to 21:18 on Fri 21 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-04-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31646, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-04-21T21:18:04+03:00", "utc": "1950-04-21T18:18:04Z", "ms": -621582115545.9454 }, "end": { "local": "1950-04-22T23:13:08+03:00", "utc": "1950-04-22T20:13:08Z", "ms": -621488812429.81 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-21T21:18:04+03:00", "utc": "1950-04-21T18:18:04Z", "ms": -621582115545.9454 }, "end": { "local": "1950-04-22T23:13:08+03:00", "utc": "1950-04-22T20:13:08Z", "ms": -621488812429.81 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-21", "window": { "start": { "local": "1950-04-21T11:42:38+03:00", "utc": "1950-04-21T08:42:38Z", "ms": -621616641712.7616 }, "end": { "local": "1950-04-21T12:30:38+03:00", "utc": "1950-04-21T09:30:38Z", "ms": -621613761712.7616 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-04-22", "window": { "start": { "local": "1950-04-22T11:42:26+03:00", "utc": "1950-04-22T08:42:26Z", "ms": -621530254010.605 }, "end": { "local": "1950-04-22T12:30:26+03:00", "utc": "1950-04-22T09:30:26Z", "ms": -621527374010.605 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:18 on Fri 21 Apr to 23:13 on Sat 22 Apr.", "fact": "1950-04-21T18:18:04Z → 1950-04-22T20:13:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 21st, 11:42–12:30 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31646 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Mosul, 1950: Saturday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-22", "confidence": "determinate" } ], "quote": "In Mosul, Śaṅkara Jayantī 1950 falls on Saturday 22 April. Pañcamī runs from 21:18 on Fri 21 Apr to 23:13 on Sat 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36711, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-04-24T00:39:30+03:00", "utc": "1950-04-23T21:39:30Z", "ms": -621397229679.802 }, "end": { "local": "1950-04-25T01:30:00+03:00", "utc": "1950-04-24T22:30:00Z", "ms": -621307799568.8881 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-24T00:39:30+03:00", "utc": "1950-04-23T21:39:30Z", "ms": -621397229679.802 }, "end": { "local": "1950-04-25T01:30:00+03:00", "utc": "1950-04-24T22:30:00Z", "ms": -621307799568.8881 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-24", "window": { "start": { "local": "1950-04-24T11:42:03+03:00", "utc": "1950-04-24T08:42:03Z", "ms": -621357477321.4957 }, "end": { "local": "1950-04-24T12:30:03+03:00", "utc": "1950-04-24T09:30:03Z", "ms": -621354597321.4957 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-04-25", "window": { "start": { "local": "1950-04-25T11:41:52+03:00", "utc": "1950-04-25T08:41:52Z", "ms": -621271088314.7727 }, "end": { "local": "1950-04-25T12:29:52+03:00", "utc": "1950-04-25T09:29:52Z", "ms": -621268208314.7727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:40 on Mon 24 Apr to 01:30 on Tue 25 Apr.", "fact": "1950-04-23T21:39:30Z → 1950-04-24T22:30:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 24th, 11:42–12:30 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36711 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Mosul, 1950: Monday 24 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-24", "confidence": "determinate" } ], "quote": "In Mosul, Gaṅgotpatti (Ganga Saptami) 1950 falls on Monday 24 April. Saptamī runs from 00:40 on Mon 24 Apr to 01:30 on Tue 25 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-04-28", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20197, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-04-27T23:42:23+03:00", "utc": "1950-04-27T20:42:23Z", "ms": -621055057164.0449 }, "end": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-27T23:42:23+03:00", "utc": "1950-04-27T20:42:23Z", "ms": -621055057164.0449 }, "end": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-04-28", "window": { "start": { "local": "1950-04-28T05:18:59+03:00", "utc": "1950-04-28T02:18:59Z", "ms": -621034860658.4363 }, "end": { "local": "1950-04-28T05:18:59+03:00", "utc": "1950-04-28T02:18:59Z", "ms": -621034860658.4363 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-04-29", "window": { "start": { "local": "1950-04-29T05:17:50+03:00", "utc": "1950-04-29T02:17:50Z", "ms": -620948530489.5331 }, "end": { "local": "1950-04-29T05:17:50+03:00", "utc": "1950-04-29T02:17:50Z", "ms": -620948530489.5331 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:42 on Thu 27 Apr to 21:39 on Fri 28 Apr.", "fact": "1950-04-27T20:42:23Z → 1950-04-28T18:38:34Z" }, { "step": "kaala", "text": "Sunrise is at 05:19 on the 28th and 05:18 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 20197 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Mosul, 1950: Friday 28 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": "1950-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-28", "confidence": "determinate" } ], "quote": "In Mosul, Mohinī Ekādaśī 1950 falls on Friday 28 April. Ekādaśī runs from 23:42 on Thu 27 Apr to 21:39 on Fri 28 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-04-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23252, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 }, "end": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 }, "end": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-28", "window": { "start": { "local": "1950-04-28T11:41:21+03:00", "utc": "1950-04-28T08:41:21Z", "ms": -621011918526.1644 }, "end": { "local": "1950-04-28T12:29:21+03:00", "utc": "1950-04-28T09:29:21Z", "ms": -621009038526.1644 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-04-29", "window": { "start": { "local": "1950-04-29T11:41:12+03:00", "utc": "1950-04-29T08:41:12Z", "ms": -620925527638.5908 }, "end": { "local": "1950-04-29T12:29:12+03:00", "utc": "1950-04-29T09:29:12Z", "ms": -620922647638.5908 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:39 on Fri 28 Apr to 18:57 on Sat 29 Apr.", "fact": "1950-04-28T18:38:34Z → 1950-04-29T15:56:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 28th, 11:41–12:29 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23252 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Mosul, 1950: Saturday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-29", "confidence": "determinate" } ], "quote": "In Mosul, Paraśurāma Dvādaśī 1950 falls on Saturday 29 April. Dvādaśī runs from 21:39 on Fri 28 Apr to 18:57 on Sat 29 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23252, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 }, "end": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-28T21:38:34+03:00", "utc": "1950-04-28T18:38:34Z", "ms": -620976085589.6484 }, "end": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-04-28", "window": { "start": { "local": "1950-04-28T11:41:21+03:00", "utc": "1950-04-28T08:41:21Z", "ms": -621011918526.1644 }, "end": { "local": "1950-04-28T12:29:21+03:00", "utc": "1950-04-28T09:29:21Z", "ms": -621009038526.1644 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-04-29", "window": { "start": { "local": "1950-04-29T11:41:12+03:00", "utc": "1950-04-29T08:41:12Z", "ms": -620925527638.5908 }, "end": { "local": "1950-04-29T12:29:12+03:00", "utc": "1950-04-29T09:29:12Z", "ms": -620922647638.5908 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:39 on Fri 28 Apr to 18:57 on Sat 29 Apr.", "fact": "1950-04-28T18:38:34Z → 1950-04-29T15:56:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 28th, 11:41–12:29 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23252 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Mosul, 1950: Saturday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-29", "confidence": "determinate" } ], "quote": "In Mosul, Rukmiṇī Dvādaśī 1950 falls on Saturday 29 April. Dvādaśī runs from 21:39 on Fri 28 Apr to 18:57 on Sat 29 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-04-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-29", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 249, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 }, "end": { "local": "1950-04-30T15:43:47+03:00", "utc": "1950-04-30T12:43:47Z", "ms": -620824573176.1714 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-29T18:56:44+03:00", "utc": "1950-04-29T15:56:44Z", "ms": -620899395817.5208 }, "end": { "local": "1950-04-30T15:43:47+03:00", "utc": "1950-04-30T12:43:47Z", "ms": -620824573176.1714 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-04-29", "window": { "start": { "local": "1950-04-29T18:52:35+03:00", "utc": "1950-04-29T15:52:35Z", "ms": -620899644787.6487 }, "end": { "local": "1950-04-29T20:15:48+03:00", "utc": "1950-04-29T17:15:48Z", "ms": -620894652055.0444 } }, "covered_min": 79, "window_min": 83, "qualifies": true }, { "local_date": "1950-04-30", "window": { "start": { "local": "1950-04-30T18:53:27+03:00", "utc": "1950-04-30T15:53:27Z", "ms": -620813193212.7346 }, "end": { "local": "1950-04-30T20:16:24+03:00", "utc": "1950-04-30T17:16:24Z", "ms": -620808216389.6046 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:57 on Sat 29 Apr to 15:44 on Sun 30 Apr.", "fact": "1950-04-29T15:56:44Z → 1950-04-30T12:43:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:16 on the 29th, 18:53–20:16 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 79 of 83 minutes on the 29th and 0 of 83 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 249 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Saturday 29 April.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-29", "confidence": "boundary" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Saturday 29 April. Trayodaśī runs from 18:57 on Sat 29 Apr to 15:44 on Sun 30 Apr and covers 79 of 83 minutes of pradoṣa that evening. It is 4 min 09 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-04-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11380, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-04-30T15:43:47+03:00", "utc": "1950-04-30T12:43:47Z", "ms": -620824573176.1714 }, "end": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-04-30T15:43:47+03:00", "utc": "1950-04-30T12:43:47Z", "ms": -620824573176.1714 }, "end": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-04-30", "window": { "start": { "local": "1950-04-30T18:53:27+03:00", "utc": "1950-04-30T15:53:27Z", "ms": -620813193212.7346 }, "end": { "local": "1950-04-30T20:16:24+03:00", "utc": "1950-04-30T17:16:24Z", "ms": -620808216389.6046 } }, "covered_min": 83, "window_min": 83, "qualifies": true }, { "local_date": "1950-05-01", "window": { "start": { "local": "1950-05-01T18:54:18+03:00", "utc": "1950-05-01T15:54:18Z", "ms": -620726741674.5574 }, "end": { "local": "1950-05-01T20:16:59+03:00", "utc": "1950-05-01T17:16:59Z", "ms": -620721780610.9927 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:44 on Sun 30 Apr to 12:08 on Mon 1 May.", "fact": "1950-04-30T12:43:47Z → 1950-05-01T09:08:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:16 on the 30th, 18:54–20:17 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 83 of 83 minutes on the 30th and 0 of 83 on the 1st.", "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 11380 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Mosul, 1950: Sunday 30 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-04-30", "confidence": "determinate" } ], "quote": "In Mosul, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1950 falls on Sunday 30 April. Caturdaśī runs from 15:44 on Sun 30 Apr to 12:08 on Mon 1 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1245, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 }, "end": { "local": "1950-05-02T08:19:29+03:00", "utc": "1950-05-02T05:19:29Z", "ms": -620678430685.6097 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 }, "end": { "local": "1950-05-02T08:19:29+03:00", "utc": "1950-05-02T05:19:29Z", "ms": -620678430685.6097 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-01", "window": { "start": { "local": "1950-05-01T11:40:56+03:00", "utc": "1950-05-01T08:40:56Z", "ms": -620752744356.9083 }, "end": { "local": "1950-05-01T12:28:56+03:00", "utc": "1950-05-01T09:28:56Z", "ms": -620749864356.9083 } }, "covered_min": 21, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-02", "window": { "start": { "local": "1950-05-02T11:40:48+03:00", "utc": "1950-05-02T08:40:48Z", "ms": -620666351938.1484 }, "end": { "local": "1950-05-02T12:28:48+03:00", "utc": "1950-05-02T09:28:48Z", "ms": -620663471938.1484 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:08 on Mon 1 May to 08:19 on Tue 2 May.", "fact": "1950-05-01T09:08:11Z → 1950-05-02T05:19:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 1st, 11:41–12:29 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 21 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1245 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Mosul, 1950: Monday 1 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": "1950-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-01", "confidence": "determinate" } ], "quote": "In Mosul, Buddha Pūrṇimā 1950 falls on Monday 1 May. Pūrṇimā runs from 12:08 on Mon 1 May to 08:19 on Tue 2 May and covers 21 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1245, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 }, "end": { "local": "1950-05-02T08:19:29+03:00", "utc": "1950-05-02T05:19:29Z", "ms": -620678430685.6097 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-01T12:08:11+03:00", "utc": "1950-05-01T09:08:11Z", "ms": -620751109426.3809 }, "end": { "local": "1950-05-02T08:19:29+03:00", "utc": "1950-05-02T05:19:29Z", "ms": -620678430685.6097 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-01", "window": { "start": { "local": "1950-05-01T11:40:56+03:00", "utc": "1950-05-01T08:40:56Z", "ms": -620752744356.9083 }, "end": { "local": "1950-05-01T12:28:56+03:00", "utc": "1950-05-01T09:28:56Z", "ms": -620749864356.9083 } }, "covered_min": 21, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-02", "window": { "start": { "local": "1950-05-02T11:40:48+03:00", "utc": "1950-05-02T08:40:48Z", "ms": -620666351938.1484 }, "end": { "local": "1950-05-02T12:28:48+03:00", "utc": "1950-05-02T09:28:48Z", "ms": -620663471938.1484 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:08 on Mon 1 May to 08:19 on Tue 2 May.", "fact": "1950-05-01T09:08:11Z → 1950-05-02T05:19:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 1st, 11:41–12:29 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 21 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1245 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Mosul, 1950: Monday 1 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": "1950-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-01", "confidence": "determinate" } ], "quote": "In Mosul, Sampat Gaurī Vrata 1950 falls on Monday 1 May. Pūrṇimā runs from 12:08 on Mon 1 May to 08:19 on Tue 2 May and covers 21 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-05-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3097, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-05-04T21:18:38+03:00", "utc": "1950-05-04T18:18:38Z", "ms": -620458881586.9099 }, "end": { "local": "1950-05-05T18:21:18+03:00", "utc": "1950-05-05T15:21:18Z", "ms": -620383122265.875 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-04T21:18:38+03:00", "utc": "1950-05-04T18:18:38Z", "ms": -620458881586.9099 }, "end": { "local": "1950-05-05T18:21:18+03:00", "utc": "1950-05-05T15:21:18Z", "ms": -620383122265.875 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-05-04", "window": { "start": { "local": "1950-05-04T22:10:15+03:00", "utc": "1950-05-04T19:10:15Z", "ms": -620455784734.0822 }, "end": { "local": "1950-05-04T22:10:15+03:00", "utc": "1950-05-04T19:10:15Z", "ms": -620455784734.0822 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-05-05", "window": { "start": { "local": "1950-05-05T23:17:10+03:00", "utc": "1950-05-05T20:17:10Z", "ms": -620365370134.6079 }, "end": { "local": "1950-05-05T23:17:10+03:00", "utc": "1950-05-05T20:17:10Z", "ms": -620365370134.6079 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:19 on Thu 4 May to 18:21 on Fri 5 May.", "fact": "1950-05-04T18:18:38Z → 1950-05-05T15:21:18Z" }, { "step": "kaala", "text": "Moonrise is at 22:10 on the 4th and 23:17 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3097 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Thursday 4 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": "1950-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-04", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Thursday 4 May. Caturthī runs from 21:19 on Thu 4 May to 18:21 on Fri 5 May and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-05-12", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38999, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-05-11T15:55:19+03:00", "utc": "1950-05-11T12:55:19Z", "ms": -619873480690.213 }, "end": { "local": "1950-05-12T17:55:25+03:00", "utc": "1950-05-12T14:55:25Z", "ms": -619779874511.6921 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-11T15:55:19+03:00", "utc": "1950-05-11T12:55:19Z", "ms": -619873480690.213 }, "end": { "local": "1950-05-12T17:55:25+03:00", "utc": "1950-05-12T14:55:25Z", "ms": -619779874511.6921 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-05-11", "window": { "start": { "local": "1950-05-11T05:05:20+03:00", "utc": "1950-05-11T02:05:20Z", "ms": -619912479707.119 }, "end": { "local": "1950-05-11T05:05:20+03:00", "utc": "1950-05-11T02:05:20Z", "ms": -619912479707.119 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-05-12", "window": { "start": { "local": "1950-05-12T05:04:26+03:00", "utc": "1950-05-12T02:04:26Z", "ms": -619826133860.0009 }, "end": { "local": "1950-05-12T05:04:26+03:00", "utc": "1950-05-12T02:04:26Z", "ms": -619826133860.0009 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:55 on Thu 11 May to 17:55 on Fri 12 May.", "fact": "1950-05-11T12:55:19Z → 1950-05-12T14:55:25Z" }, { "step": "kaala", "text": "Sunrise is at 05:05 on the 11th and 05:04 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38999 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Mosul, 1950: Friday 12 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": "1950-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-12", "confidence": "determinate" } ], "quote": "In Mosul, Aparā Ekādaśī 1950 falls on Friday 12 May. Ekādaśī runs from 15:55 on Thu 11 May to 17:55 on Fri 12 May and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-05-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-05-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 448, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-05-13T20:16:47+03:00", "utc": "1950-05-13T17:16:47Z", "ms": -619684992717.6243 }, "end": { "local": "1950-05-14T22:49:20+03:00", "utc": "1950-05-14T19:49:20Z", "ms": -619589439918.7756 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-13T20:16:47+03:00", "utc": "1950-05-13T17:16:47Z", "ms": -619684992717.6243 }, "end": { "local": "1950-05-14T22:49:20+03:00", "utc": "1950-05-14T19:49:20Z", "ms": -619589439918.7756 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-05-13", "window": { "start": { "local": "1950-05-13T19:04:30+03:00", "utc": "1950-05-13T16:04:30Z", "ms": -619689330005.2814 }, "end": { "local": "1950-05-13T20:24:16+03:00", "utc": "1950-05-13T17:24:16Z", "ms": -619684544398.1329 } }, "covered_min": 7, "window_min": 80, "qualifies": true }, { "local_date": "1950-05-14", "window": { "start": { "local": "1950-05-14T19:05:20+03:00", "utc": "1950-05-14T16:05:20Z", "ms": -619602880176.3701 }, "end": { "local": "1950-05-14T20:24:52+03:00", "utc": "1950-05-14T17:24:52Z", "ms": -619598107865.6854 } }, "covered_min": 80, "window_min": 80, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:17 on Sat 13 May to 22:49 on Sun 14 May.", "fact": "1950-05-13T17:16:47Z → 1950-05-14T19:49:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:04–20:24 on the 13th, 19:05–20:25 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 7 of 80 minutes on the 13th and 80 of 80 on the 14th.", "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 448 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Sunday 14 May.", "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": "1950-05-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-14", "confidence": "boundary" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Sunday 14 May. Trayodaśī runs from 20:17 on Sat 13 May to 22:49 on Sun 14 May and covers all of pradoṣa that evening. It also reaches the previous evening for 7 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/mosul/festivals/1950/pradosha-vrata?on=1950-05-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-05-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 3016, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-05-14T22:49:20+03:00", "utc": "1950-05-14T19:49:20Z", "ms": -619589439918.7756 }, "end": { "local": "1950-05-16T01:24:14+03:00", "utc": "1950-05-15T22:24:14Z", "ms": -619493746357.7977 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-14T22:49:20+03:00", "utc": "1950-05-14T19:49:20Z", "ms": -619589439918.7756 }, "end": { "local": "1950-05-16T01:24:14+03:00", "utc": "1950-05-15T22:24:14Z", "ms": -619493746357.7977 } }, "kaala": "nishita", "days": [ { "local_date": "1950-05-14", "window": { "start": { "local": "1950-05-14T23:39:36+03:00", "utc": "1950-05-14T20:39:36Z", "ms": -619586424011.3022 }, "end": { "local": "1950-05-15T00:27:36+03:00", "utc": "1950-05-14T21:27:36Z", "ms": -619583544011.3022 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-15", "window": { "start": { "local": "1950-05-15T23:39:37+03:00", "utc": "1950-05-15T20:39:37Z", "ms": -619500023461.8195 }, "end": { "local": "1950-05-16T00:27:37+03:00", "utc": "1950-05-15T21:27:37Z", "ms": -619497143461.8195 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:49 on Sun 14 May to 01:24 on Tue 16 May.", "fact": "1950-05-14T19:49:20Z → 1950-05-15T22:24:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 14th, 23:40–00:28 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 3016 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Sunday 14 May.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-05-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-14", "confidence": "boundary" } ], "quote": "In Mosul, Śivarātri 1950 falls on Sunday 14 May. Caturdaśī runs from 22:49 on Sun 14 May to 01:24 on Tue 16 May 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/mosul/festivals/1950/shivaratri?on=1950-05-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5620, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-05-19T08:19:36+03:00", "utc": "1950-05-19T05:19:36Z", "ms": -619209623650.8243 }, "end": { "local": "1950-05-20T10:06:28+03:00", "utc": "1950-05-20T07:06:28Z", "ms": -619116812193.4198 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-19T08:19:36+03:00", "utc": "1950-05-19T05:19:36Z", "ms": -619209623650.8243 }, "end": { "local": "1950-05-20T10:06:28+03:00", "utc": "1950-05-20T07:06:28Z", "ms": -619116812193.4198 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-19", "window": { "start": { "local": "1950-05-19T11:40:06+03:00", "utc": "1950-05-19T08:40:06Z", "ms": -619197594375.3008 }, "end": { "local": "1950-05-19T12:28:06+03:00", "utc": "1950-05-19T09:28:06Z", "ms": -619194714375.3008 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-20", "window": { "start": { "local": "1950-05-20T11:40:08+03:00", "utc": "1950-05-20T08:40:08Z", "ms": -619111191797.7659 }, "end": { "local": "1950-05-20T12:28:08+03:00", "utc": "1950-05-20T09:28:08Z", "ms": -619108311797.7659 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 08:20 on Fri 19 May to 10:06 on Sat 20 May.", "fact": "1950-05-19T05:19:36Z → 1950-05-20T07:06:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 19th, 11:40–12:28 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5620 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Mosul, 1950: Friday 19 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-19", "confidence": "determinate" } ], "quote": "In Mosul, Rambhā Tṛtīyā 1950 falls on Friday 19 May. Tṛtīyā runs from 08:20 on Fri 19 May to 10:06 on Sat 20 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-05-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 558, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-05-20T10:06:28+03:00", "utc": "1950-05-20T07:06:28Z", "ms": -619116812193.4198 }, "end": { "local": "1950-05-21T11:30:53+03:00", "utc": "1950-05-21T08:30:53Z", "ms": -619025346871.6798 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-20T10:06:28+03:00", "utc": "1950-05-20T07:06:28Z", "ms": -619116812193.4198 }, "end": { "local": "1950-05-21T11:30:53+03:00", "utc": "1950-05-21T08:30:53Z", "ms": -619025346871.6798 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-20", "window": { "start": { "local": "1950-05-20T11:40:08+03:00", "utc": "1950-05-20T08:40:08Z", "ms": -619111191797.7659 }, "end": { "local": "1950-05-20T12:28:08+03:00", "utc": "1950-05-20T09:28:08Z", "ms": -619108311797.7659 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-21", "window": { "start": { "local": "1950-05-21T11:40:11+03:00", "utc": "1950-05-21T08:40:11Z", "ms": -619024788694.7742 }, "end": { "local": "1950-05-21T12:28:11+03:00", "utc": "1950-05-21T09:28:11Z", "ms": -619021908694.7742 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:06 on Sat 20 May to 11:31 on Sun 21 May.", "fact": "1950-05-20T07:06:28Z → 1950-05-21T08:30:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 20th, 11:40–12:28 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 558 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Saturday 20 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": "1950-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-20", "confidence": "boundary" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Saturday 20 May. Caturthī runs from 10:06 on Sat 20 May to 11:31 on Sun 21 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-05-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-23", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 22, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-05-22T12:28:37+03:00", "utc": "1950-05-22T09:28:37Z", "ms": -618935483389.5618 }, "end": { "local": "1950-05-23T12:55:14+03:00", "utc": "1950-05-23T09:55:14Z", "ms": -618847485602.1354 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-22T12:28:37+03:00", "utc": "1950-05-22T09:28:37Z", "ms": -618935483389.5618 }, "end": { "local": "1950-05-23T12:55:14+03:00", "utc": "1950-05-23T09:55:14Z", "ms": -618847485602.1354 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-22", "window": { "start": { "local": "1950-05-22T11:40:15+03:00", "utc": "1950-05-22T08:40:15Z", "ms": -618938385076.7094 }, "end": { "local": "1950-05-22T12:28:15+03:00", "utc": "1950-05-22T09:28:15Z", "ms": -618935505076.7094 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-05-23", "window": { "start": { "local": "1950-05-23T11:40:19+03:00", "utc": "1950-05-23T08:40:19Z", "ms": -618851980954.3801 }, "end": { "local": "1950-05-23T12:28:19+03:00", "utc": "1950-05-23T09:28:19Z", "ms": -618849100954.3801 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 12:29 on Mon 22 May to 12:55 on Tue 23 May.", "fact": "1950-05-22T09:28:37Z → 1950-05-23T09:55:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 22nd, 11:40–12:28 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22 s < 300 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Mosul, 1950: Tuesday 23 May.", "fact": "confidence: boundary (margin)" } ], "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": "1950-05-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-23", "confidence": "determinate" } ], "quote": "In Mosul, Araṇya Gaurī Vrata 1950 falls on Tuesday 23 May. Ṣaṣṭhī runs from 12:29 on Mon 22 May to 12:55 on Tue 23 May and covers all of madhyāhna that midday. It is 0 min 22 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-23", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 22, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-05-22T12:28:37+03:00", "utc": "1950-05-22T09:28:37Z", "ms": -618935483389.5618 }, "end": { "local": "1950-05-23T12:55:14+03:00", "utc": "1950-05-23T09:55:14Z", "ms": -618847485602.1354 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-22T12:28:37+03:00", "utc": "1950-05-22T09:28:37Z", "ms": -618935483389.5618 }, "end": { "local": "1950-05-23T12:55:14+03:00", "utc": "1950-05-23T09:55:14Z", "ms": -618847485602.1354 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-22", "window": { "start": { "local": "1950-05-22T11:40:15+03:00", "utc": "1950-05-22T08:40:15Z", "ms": -618938385076.7094 }, "end": { "local": "1950-05-22T12:28:15+03:00", "utc": "1950-05-22T09:28:15Z", "ms": -618935505076.7094 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-05-23", "window": { "start": { "local": "1950-05-23T11:40:19+03:00", "utc": "1950-05-23T08:40:19Z", "ms": -618851980954.3801 }, "end": { "local": "1950-05-23T12:28:19+03:00", "utc": "1950-05-23T09:28:19Z", "ms": -618849100954.3801 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 12:29 on Mon 22 May to 12:55 on Tue 23 May.", "fact": "1950-05-22T09:28:37Z → 1950-05-23T09:55:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 22nd, 11:40–12:28 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22 s < 300 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Mosul, 1950: Tuesday 23 May.", "fact": "confidence: boundary (margin)" } ], "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": "1950-05-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-22", "confidence": "determinate" } ], "quote": "In Mosul, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1950 falls on Tuesday 23 May. Ṣaṣṭhī runs from 12:29 on Mon 22 May to 12:55 on Tue 23 May and covers all of madhyāhna that midday. It is 0 min 22 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-05-28", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3466, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-05-27T08:30:14+03:00", "utc": "1950-05-27T05:30:14Z", "ms": -618517786236.1437 }, "end": { "local": "1950-05-28T05:51:09+03:00", "utc": "1950-05-28T02:51:09Z", "ms": -618440930767.462 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-27T08:30:14+03:00", "utc": "1950-05-27T05:30:14Z", "ms": -618517786236.1437 }, "end": { "local": "1950-05-28T05:51:09+03:00", "utc": "1950-05-28T02:51:09Z", "ms": -618440930767.462 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-05-27", "window": { "start": { "local": "1950-05-27T04:53:53+03:00", "utc": "1950-05-27T01:53:53Z", "ms": -618530767444.2728 }, "end": { "local": "1950-05-27T04:53:53+03:00", "utc": "1950-05-27T01:53:53Z", "ms": -618530767444.2728 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-05-28", "window": { "start": { "local": "1950-05-28T04:53:23+03:00", "utc": "1950-05-28T01:53:23Z", "ms": -618444397003.5482 }, "end": { "local": "1950-05-28T04:53:23+03:00", "utc": "1950-05-28T01:53:23Z", "ms": -618444397003.5482 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:30 on Sat 27 May to 05:51 on Sun 28 May.", "fact": "1950-05-27T05:30:14Z → 1950-05-28T02:51:09Z" }, { "step": "kaala", "text": "Sunrise is at 04:54 on the 27th and 04:53 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3466 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Mosul, 1950: Sunday 28 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": "1950-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-28", "confidence": "determinate" } ], "quote": "In Mosul, Nirjalā Ekādaśī 1950 falls on Sunday 28 May. Ekādaśī runs from 08:30 on Sat 27 May to 05:51 on Sun 28 May and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-05-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20978, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-05-28T05:51:09+03:00", "utc": "1950-05-28T02:51:09Z", "ms": -618440930767.462 }, "end": { "local": "1950-05-29T02:42:42+03:00", "utc": "1950-05-28T23:42:42Z", "ms": -618365838137.7719 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-28T05:51:09+03:00", "utc": "1950-05-28T02:51:09Z", "ms": -618440930767.462 }, "end": { "local": "1950-05-29T02:42:42+03:00", "utc": "1950-05-28T23:42:42Z", "ms": -618365838137.7719 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-05-28", "window": { "start": { "local": "1950-05-28T11:40:47+03:00", "utc": "1950-05-28T08:40:47Z", "ms": -618419953164.01 }, "end": { "local": "1950-05-28T12:28:47+03:00", "utc": "1950-05-28T09:28:47Z", "ms": -618417073164.01 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-05-29", "window": { "start": { "local": "1950-05-29T11:40:54+03:00", "utc": "1950-05-29T08:40:54Z", "ms": -618333546243.4872 }, "end": { "local": "1950-05-29T12:28:54+03:00", "utc": "1950-05-29T09:28:54Z", "ms": -618330666243.4872 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:51 on Sun 28 May to 02:43 on Mon 29 May.", "fact": "1950-05-28T02:51:09Z → 1950-05-28T23:42:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 28th, 11:41–12:29 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20978 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Mosul, 1950: Sunday 28 May.", "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": "1950-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-28", "confidence": "determinate" } ], "quote": "In Mosul, Śrī Rāma Dvādaśī 1950 falls on Sunday 28 May. Dvādaśī runs from 05:51 on Sun 28 May to 02:43 on Mon 29 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-05-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9523, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-05-29T02:42:42+03:00", "utc": "1950-05-28T23:42:42Z", "ms": -618365838137.7719 }, "end": { "local": "1950-05-29T23:12:21+03:00", "utc": "1950-05-29T20:12:21Z", "ms": -618292059457.6584 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-29T02:42:42+03:00", "utc": "1950-05-28T23:42:42Z", "ms": -618365838137.7719 }, "end": { "local": "1950-05-29T23:12:21+03:00", "utc": "1950-05-29T20:12:21Z", "ms": -618292059457.6584 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-05-28", "window": { "start": { "local": "1950-05-28T19:16:11+03:00", "utc": "1950-05-28T16:16:11Z", "ms": -618392629324.4719 }, "end": { "local": "1950-05-28T20:33:05+03:00", "utc": "1950-05-28T17:33:05Z", "ms": -618388015400.9017 } }, "covered_min": 0, "window_min": 77, "qualifies": false }, { "local_date": "1950-05-29", "window": { "start": { "local": "1950-05-29T19:16:52+03:00", "utc": "1950-05-29T16:16:52Z", "ms": -618306187589.2793 }, "end": { "local": "1950-05-29T20:33:37+03:00", "utc": "1950-05-29T17:33:37Z", "ms": -618301582726.0135 } }, "covered_min": 77, "window_min": 77, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:43 on Mon 29 May to 23:12 on Mon 29 May.", "fact": "1950-05-28T23:42:42Z → 1950-05-29T20:12:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:16–20:33 on the 28th, 19:17–20:34 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 77 minutes on the 28th and 77 of 77 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9523 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Monday 29 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": "1950-05-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-29", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Monday 29 May. Trayodaśī runs from 02:43 on Mon 29 May to 23:12 on Mon 29 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-05-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 691, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-05-30T19:29:05+03:00", "utc": "1950-05-30T16:29:05Z", "ms": -618219055177.434 }, "end": { "local": "1950-05-31T15:42:59+03:00", "utc": "1950-05-31T12:42:59Z", "ms": -618146220503.6372 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1950-05-30T19:29:05+03:00", "utc": "1950-05-30T16:29:05Z", "ms": -618219055177.434 }, "end": { "local": "1950-05-31T15:42:59+03:00", "utc": "1950-05-31T12:42:59Z", "ms": -618146220503.6372 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-05-30", "window": { "start": { "local": "1950-05-30T19:17:33+03:00", "utc": "1950-05-30T16:17:33Z", "ms": -618219746667.4736 }, "end": { "local": "1950-05-30T20:34:09+03:00", "utc": "1950-05-30T17:34:09Z", "ms": -618215150530.9175 } }, "covered_min": 65, "window_min": 77, "qualifies": true }, { "local_date": "1950-05-31", "window": { "start": { "local": "1950-05-31T19:18:13+03:00", "utc": "1950-05-31T16:18:13Z", "ms": -618133306588.834 }, "end": { "local": "1950-05-31T20:34:41+03:00", "utc": "1950-05-31T17:34:41Z", "ms": -618128718839.9342 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:29 on Tue 30 May to 15:43 on Wed 31 May.", "fact": "1950-05-30T16:29:05Z → 1950-05-31T12:42:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:18–20:34 on the 30th, 19:18–20:35 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 65 of 77 minutes on the 30th and 0 of 76 on the 31st.", "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 691 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Mosul, 1950: Tuesday 30 May.", "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": "1950-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-05-30", "confidence": "determinate" } ], "quote": "In Mosul, Vaṭa Sāvitrī Vrata 1950 falls on Tuesday 30 May. Pūrṇimā runs from 19:29 on Tue 30 May to 15:43 on Wed 31 May and covers 65 of 77 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-06-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17777, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-06-03T05:55:39+03:00", "utc": "1950-06-03T02:55:39Z", "ms": -617922261272.3821 }, "end": { "local": "1950-06-04T03:44:49+03:00", "utc": "1950-06-04T00:44:49Z", "ms": -617843711029.239 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-03T05:55:39+03:00", "utc": "1950-06-03T02:55:39Z", "ms": -617922261272.3821 }, "end": { "local": "1950-06-04T03:44:49+03:00", "utc": "1950-06-04T00:44:49Z", "ms": -617843711029.239 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-06-02", "window": { "start": { "local": "1950-06-02T21:58:26+03:00", "utc": "1950-06-02T18:58:26Z", "ms": -617950894398.4952 }, "end": { "local": "1950-06-02T21:58:26+03:00", "utc": "1950-06-02T18:58:26Z", "ms": -617950894398.4952 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-06-03", "window": { "start": { "local": "1950-06-03T22:48:32+03:00", "utc": "1950-06-03T19:48:32Z", "ms": -617861488234.7742 }, "end": { "local": "1950-06-03T22:48:32+03:00", "utc": "1950-06-03T19:48:32Z", "ms": -617861488234.7742 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:56 on Sat 3 Jun to 03:45 on Sun 4 Jun.", "fact": "1950-06-03T02:55:39Z → 1950-06-04T00:44:49Z" }, { "step": "kaala", "text": "Moonrise is at 21:58 on the 2nd and 22:49 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17777 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Saturday 3 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": "1950-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-03", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Saturday 3 June. Caturthī runs from 05:56 on Sat 3 Jun to 03:45 on Sun 4 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-06-11", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8924, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-06-10T07:18:18+03:00", "utc": "1950-06-10T04:18:18Z", "ms": -617312501803.8164 }, "end": { "local": "1950-06-11T09:49:36+03:00", "utc": "1950-06-11T06:49:36Z", "ms": -617217023766.6193 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-10T07:18:18+03:00", "utc": "1950-06-10T04:18:18Z", "ms": -617312501803.8164 }, "end": { "local": "1950-06-11T09:49:36+03:00", "utc": "1950-06-11T06:49:36Z", "ms": -617217023766.6193 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-06-10", "window": { "start": { "local": "1950-06-10T04:49:34+03:00", "utc": "1950-06-10T01:49:34Z", "ms": -617321426150.182 }, "end": { "local": "1950-06-10T04:49:34+03:00", "utc": "1950-06-10T01:49:34Z", "ms": -617321426150.182 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-06-11", "window": { "start": { "local": "1950-06-11T04:49:28+03:00", "utc": "1950-06-11T01:49:28Z", "ms": -617235031659.8107 }, "end": { "local": "1950-06-11T04:49:28+03:00", "utc": "1950-06-11T01:49:28Z", "ms": -617235031659.8107 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:18 on Sat 10 Jun to 09:50 on Sun 11 Jun.", "fact": "1950-06-10T04:18:18Z → 1950-06-11T06:49:36Z" }, { "step": "kaala", "text": "Sunrise is at 04:50 on the 10th and 04:49 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8924 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Mosul, 1950: Sunday 11 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": "1950-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-11", "confidence": "determinate" } ], "quote": "In Mosul, Yoginī Ekādaśī 1950 falls on Sunday 11 June. Ekādaśī runs from 07:18 on Sat 10 Jun to 09:50 on Sun 11 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-06-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16529, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-06-12T12:23:36+03:00", "utc": "1950-06-12T09:23:36Z", "ms": -617121384154.7727 }, "end": { "local": "1950-06-13T14:49:54+03:00", "utc": "1950-06-13T11:49:54Z", "ms": -617026206359.8812 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-12T12:23:36+03:00", "utc": "1950-06-12T09:23:36Z", "ms": -617121384154.7727 }, "end": { "local": "1950-06-13T14:49:54+03:00", "utc": "1950-06-13T11:49:54Z", "ms": -617026206359.8812 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-06-12", "window": { "start": { "local": "1950-06-12T19:24:56+03:00", "utc": "1950-06-12T16:24:56Z", "ms": -617096103582.1761 }, "end": { "local": "1950-06-12T20:40:12+03:00", "utc": "1950-06-12T17:40:12Z", "ms": -617091588109.7478 } }, "covered_min": 75, "window_min": 75, "qualifies": true }, { "local_date": "1950-06-13", "window": { "start": { "local": "1950-06-13T19:25:22+03:00", "utc": "1950-06-13T16:25:22Z", "ms": -617009677593.1462 }, "end": { "local": "1950-06-13T20:40:34+03:00", "utc": "1950-06-13T17:40:34Z", "ms": -617005165638.5275 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:24 on Mon 12 Jun to 14:50 on Tue 13 Jun.", "fact": "1950-06-12T09:23:36Z → 1950-06-13T11:49:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:25–20:40 on the 12th, 19:25–20:41 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 75 of 75 minutes on the 12th and 0 of 75 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16529 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Monday 12 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": "1950-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-12", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Monday 12 June. Trayodaśī runs from 12:24 on Mon 12 Jun to 14:50 on Tue 13 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-06-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24149, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-06-13T14:49:54+03:00", "utc": "1950-06-13T11:49:54Z", "ms": -617026206359.8812 }, "end": { "local": "1950-06-14T17:01:06+03:00", "utc": "1950-06-14T14:01:06Z", "ms": -616931933724.1489 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-13T14:49:54+03:00", "utc": "1950-06-13T11:49:54Z", "ms": -617026206359.8812 }, "end": { "local": "1950-06-14T17:01:06+03:00", "utc": "1950-06-14T14:01:06Z", "ms": -616931933724.1489 } }, "kaala": "nishita", "days": [ { "local_date": "1950-06-13", "window": { "start": { "local": "1950-06-13T23:43:22+03:00", "utc": "1950-06-13T20:43:22Z", "ms": -616994197763.3257 }, "end": { "local": "1950-06-14T00:31:22+03:00", "utc": "1950-06-13T21:31:22Z", "ms": -616991317763.3257 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-06-14", "window": { "start": { "local": "1950-06-14T23:43:35+03:00", "utc": "1950-06-14T20:43:35Z", "ms": -616907784797.853 }, "end": { "local": "1950-06-15T00:31:35+03:00", "utc": "1950-06-14T21:31:35Z", "ms": -616904904797.853 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:50 on Tue 13 Jun to 17:01 on Wed 14 Jun.", "fact": "1950-06-13T11:49:54Z → 1950-06-14T14:01:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:43–00:31 on the 13th, 23:44–00:32 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24149 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Tuesday 13 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-13", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Tuesday 13 June. Caturdaśī runs from 14:50 on Tue 13 Jun to 17:01 on Wed 14 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-06-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34893, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-06-18T22:13:57+03:00", "utc": "1950-06-18T19:13:57Z", "ms": -616567563098.3774 }, "end": { "local": "1950-06-19T22:33:58+03:00", "utc": "1950-06-19T19:33:58Z", "ms": -616479962339.9675 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-18T22:13:57+03:00", "utc": "1950-06-18T19:13:57Z", "ms": -616567563098.3774 }, "end": { "local": "1950-06-19T22:33:58+03:00", "utc": "1950-06-19T19:33:58Z", "ms": -616479962339.9675 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-06-18", "window": { "start": { "local": "1950-06-18T11:44:24+03:00", "utc": "1950-06-18T08:44:24Z", "ms": -616605335690.3293 }, "end": { "local": "1950-06-18T12:32:24+03:00", "utc": "1950-06-18T09:32:24Z", "ms": -616602455690.3293 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-06-19", "window": { "start": { "local": "1950-06-19T11:44:37+03:00", "utc": "1950-06-19T08:44:37Z", "ms": -616518923076.7052 }, "end": { "local": "1950-06-19T12:32:37+03:00", "utc": "1950-06-19T09:32:37Z", "ms": -616516043076.7052 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:14 on Sun 18 Jun to 22:34 on Mon 19 Jun.", "fact": "1950-06-18T19:13:57Z → 1950-06-19T19:33:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 18th, 11:45–12:33 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34893 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Monday 19 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": "1950-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-19", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Monday 19 June. Caturthī runs from 22:14 on Sun 18 Jun to 22:34 on Mon 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-06-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-06-26", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25741, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-06-25T14:52:54+03:00", "utc": "1950-06-25T11:52:54Z", "ms": -615989226437.8766 }, "end": { "local": "1950-06-26T12:00:24+03:00", "utc": "1950-06-26T09:00:24Z", "ms": -615913176482.3112 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-25T14:52:54+03:00", "utc": "1950-06-25T11:52:54Z", "ms": -615989226437.8766 }, "end": { "local": "1950-06-26T12:00:24+03:00", "utc": "1950-06-26T09:00:24Z", "ms": -615913176482.3112 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-06-25", "window": { "start": { "local": "1950-06-25T04:51:04+03:00", "utc": "1950-06-25T01:51:04Z", "ms": -616025336157.176 }, "end": { "local": "1950-06-25T04:51:04+03:00", "utc": "1950-06-25T01:51:04Z", "ms": -616025336157.176 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-06-26", "window": { "start": { "local": "1950-06-26T04:51:22+03:00", "utc": "1950-06-26T01:51:22Z", "ms": -615938917875.1642 }, "end": { "local": "1950-06-26T04:51:22+03:00", "utc": "1950-06-26T01:51:22Z", "ms": -615938917875.1642 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:53 on Sun 25 Jun to 12:00 on Mon 26 Jun.", "fact": "1950-06-25T11:52:54Z → 1950-06-26T09:00:24Z" }, { "step": "kaala", "text": "Sunrise is at 04:51 on the 25th and 04:51 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25741 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Mosul, 1950: Monday 26 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": "1950-06-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-26", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Ekādaśī 1950 falls on Monday 26 June. Ekādaśī runs from 14:53 on Sun 25 Jun to 12:00 on Mon 26 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-06-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-06-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31589, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-06-27T08:50:20+03:00", "utc": "1950-06-27T05:50:20Z", "ms": -615838180111.0454 }, "end": { "local": "1950-06-28T05:30:26+03:00", "utc": "1950-06-28T02:30:26Z", "ms": -615763774249.7772 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-06-27T08:50:20+03:00", "utc": "1950-06-27T05:50:20Z", "ms": -615838180111.0454 }, "end": { "local": "1950-06-28T05:30:26+03:00", "utc": "1950-06-28T02:30:26Z", "ms": -615763774249.7772 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-06-26", "window": { "start": { "local": "1950-06-26T19:28:46+03:00", "utc": "1950-06-26T16:28:46Z", "ms": -615886273590.9136 }, "end": { "local": "1950-06-26T20:43:50+03:00", "utc": "1950-06-26T17:43:50Z", "ms": -615881770205.7417 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1950-06-27", "window": { "start": { "local": "1950-06-27T19:28:51+03:00", "utc": "1950-06-27T16:28:51Z", "ms": -615799869144.3328 }, "end": { "local": "1950-06-27T20:43:56+03:00", "utc": "1950-06-27T17:43:56Z", "ms": -615795363547.1184 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:50 on Tue 27 Jun to 05:30 on Wed 28 Jun.", "fact": "1950-06-27T05:50:20Z → 1950-06-28T02:30:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:29–20:44 on the 26th, 19:29–20:44 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 75 minutes on the 26th and 75 of 75 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31589 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Tuesday 27 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": "1950-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-06-27", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Tuesday 27 June. Trayodaśī runs from 08:50 on Tue 27 Jun to 05:30 on Wed 28 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-06-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-07-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21485, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-07-02T15:58:53+03:00", "utc": "1950-07-02T12:58:53Z", "ms": -615380467066.9259 }, "end": { "local": "1950-07-03T15:00:12+03:00", "utc": "1950-07-03T12:00:12Z", "ms": -615297588411.9993 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-02T15:58:53+03:00", "utc": "1950-07-02T12:58:53Z", "ms": -615380467066.9259 }, "end": { "local": "1950-07-03T15:00:12+03:00", "utc": "1950-07-03T12:00:12Z", "ms": -615297588411.9993 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-07-02", "window": { "start": { "local": "1950-07-02T21:56:58+03:00", "utc": "1950-07-02T18:56:58Z", "ms": -615358981795.0176 }, "end": { "local": "1950-07-02T21:56:58+03:00", "utc": "1950-07-02T18:56:58Z", "ms": -615358981795.0176 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-07-03", "window": { "start": { "local": "1950-07-03T22:26:23+03:00", "utc": "1950-07-03T19:26:23Z", "ms": -615270817057.2792 }, "end": { "local": "1950-07-03T22:26:23+03:00", "utc": "1950-07-03T19:26:23Z", "ms": -615270817057.2792 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:59 on Sun 2 Jul to 15:00 on Mon 3 Jul.", "fact": "1950-07-02T12:58:53Z → 1950-07-03T12:00:12Z" }, { "step": "kaala", "text": "Moonrise is at 21:57 on the 2nd and 22:26 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21485 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Sunday 2 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": "1950-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-02", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Sunday 2 July. Caturthī runs from 15:59 on Sun 2 Jul to 15:00 on Mon 3 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-07-10", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9891, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-07-09T23:49:41+03:00", "utc": "1950-07-09T20:49:41Z", "ms": -614747419167.8046 }, "end": { "local": "1950-07-11T02:13:37+03:00", "utc": "1950-07-10T23:13:37Z", "ms": -614652383388.8354 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-09T23:49:41+03:00", "utc": "1950-07-09T20:49:41Z", "ms": -614747419167.8046 }, "end": { "local": "1950-07-11T02:13:37+03:00", "utc": "1950-07-10T23:13:37Z", "ms": -614652383388.8354 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-07-10", "window": { "start": { "local": "1950-07-10T04:57:51+03:00", "utc": "1950-07-10T01:57:51Z", "ms": -614728928583.518 }, "end": { "local": "1950-07-10T04:57:51+03:00", "utc": "1950-07-10T01:57:51Z", "ms": -614728928583.518 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-07-11", "window": { "start": { "local": "1950-07-11T04:58:28+03:00", "utc": "1950-07-11T01:58:28Z", "ms": -614642492499.1506 }, "end": { "local": "1950-07-11T04:58:28+03:00", "utc": "1950-07-11T01:58:28Z", "ms": -614642492499.1506 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:50 on Sun 9 Jul to 02:14 on Tue 11 Jul.", "fact": "1950-07-09T20:49:41Z → 1950-07-10T23:13:37Z" }, { "step": "kaala", "text": "Sunrise is at 04:58 on the 10th and 04:58 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9891 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Mosul, 1950: Monday 10 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": "1950-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-10", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Ekādaśī 1950 falls on Monday 10 July. Ekādaśī runs from 23:50 on Sun 9 Jul to 02:14 on Tue 11 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-07-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-07-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27443, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-07-12T04:20:33+03:00", "utc": "1950-07-12T01:20:33Z", "ms": -614558367004.7855 }, "end": { "local": "1950-07-13T06:03:20+03:00", "utc": "1950-07-13T03:03:20Z", "ms": -614465800047.1919 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-12T04:20:33+03:00", "utc": "1950-07-12T01:20:33Z", "ms": -614558367004.7855 }, "end": { "local": "1950-07-13T06:03:20+03:00", "utc": "1950-07-13T03:03:20Z", "ms": -614465800047.1919 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-07-11", "window": { "start": { "local": "1950-07-11T19:26:52+03:00", "utc": "1950-07-11T16:26:52Z", "ms": -614590387746.2919 }, "end": { "local": "1950-07-11T20:43:10+03:00", "utc": "1950-07-11T17:43:10Z", "ms": -614585810114.0717 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "1950-07-12", "window": { "start": { "local": "1950-07-12T19:26:31+03:00", "utc": "1950-07-12T16:26:31Z", "ms": -614504009279.4897 }, "end": { "local": "1950-07-12T20:42:56+03:00", "utc": "1950-07-12T17:42:56Z", "ms": -614499423727.6122 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:21 on Wed 12 Jul to 06:03 on Thu 13 Jul.", "fact": "1950-07-12T01:20:33Z → 1950-07-13T03:03:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:27–20:43 on the 11th, 19:27–20:43 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 11th and 76 of 76 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27443 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Wednesday 12 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": "1950-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-12", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Wednesday 12 July. Trayodaśī runs from 04:21 on Wed 12 Jul to 06:03 on Thu 13 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-07-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-07-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19573, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-07-13T06:03:20+03:00", "utc": "1950-07-13T03:03:20Z", "ms": -614465800047.1919 }, "end": { "local": "1950-07-14T07:18:29+03:00", "utc": "1950-07-14T04:18:29Z", "ms": -614374891381.7533 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": true, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-13T06:03:20+03:00", "utc": "1950-07-13T03:03:20Z", "ms": -614465800047.1919 }, "end": { "local": "1950-07-14T07:18:29+03:00", "utc": "1950-07-14T04:18:29Z", "ms": -614374891381.7533 } }, "kaala": "nishita", "days": [ { "local_date": "1950-07-12", "window": { "start": { "local": "1950-07-12T23:49:07+03:00", "utc": "1950-07-12T20:49:07Z", "ms": -614488253459.9491 }, "end": { "local": "1950-07-13T00:37:07+03:00", "utc": "1950-07-12T21:37:07Z", "ms": -614485373459.9491 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-07-13", "window": { "start": { "local": "1950-07-13T23:49:14+03:00", "utc": "1950-07-13T20:49:14Z", "ms": -614401845749.9047 }, "end": { "local": "1950-07-14T00:37:14+03:00", "utc": "1950-07-13T21:37:14Z", "ms": -614398965749.9047 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:03 on Thu 13 Jul to 07:18 on Fri 14 Jul.", "fact": "1950-07-13T03:03:20Z → 1950-07-14T04:18:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:49–00:37 on the 12th, 23:49–00:37 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19573 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Thursday 13 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": "1950-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-13", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Thursday 13 July. Caturdaśī runs from 06:03 on Thu 13 Jul to 07:18 on Fri 14 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-07-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12217, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1950-07-16T08:25:37+03:00", "utc": "1950-07-16T05:25:37Z", "ms": -614198063203.7596 }, "end": { "local": "1950-07-17T08:21:11+03:00", "utc": "1950-07-17T05:21:11Z", "ms": -614111928676.5143 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-16T08:25:37+03:00", "utc": "1950-07-16T05:25:37Z", "ms": -614198063203.7596 }, "end": { "local": "1950-07-17T08:21:11+03:00", "utc": "1950-07-17T05:21:11Z", "ms": -614111928676.5143 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-07-16", "window": { "start": { "local": "1950-07-16T11:49:14+03:00", "utc": "1950-07-16T08:49:14Z", "ms": -614185846000.2463 }, "end": { "local": "1950-07-16T12:37:14+03:00", "utc": "1950-07-16T09:37:14Z", "ms": -614182966000.2463 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-07-17", "window": { "start": { "local": "1950-07-17T11:49:19+03:00", "utc": "1950-07-17T08:49:19Z", "ms": -614099440623.5431 }, "end": { "local": "1950-07-17T12:37:19+03:00", "utc": "1950-07-17T09:37:19Z", "ms": -614096560623.5431 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 08:26 on Sun 16 Jul to 08:21 on Mon 17 Jul.", "fact": "1950-07-16T05:25:37Z → 1950-07-17T05:21:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 16th, 11:49–12:37 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12217 s" }, { "step": "ruling", "text": "Rathayātrā, Mosul, 1950: Sunday 16 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": "1950-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-16", "confidence": "determinate" } ], "quote": "In Mosul, Rathayātrā 1950 falls on Sunday 16 July. Dvitīyā runs from 08:26 on Sun 16 Jul to 08:21 on Mon 17 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-07-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14099, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-07-18T07:54:25+03:00", "utc": "1950-07-18T04:54:25Z", "ms": -614027134960.2615 }, "end": { "local": "1950-07-19T07:07:02+03:00", "utc": "1950-07-19T04:07:02Z", "ms": -613943577763.6431 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-18T07:54:25+03:00", "utc": "1950-07-18T04:54:25Z", "ms": -614027134960.2615 }, "end": { "local": "1950-07-19T07:07:02+03:00", "utc": "1950-07-19T04:07:02Z", "ms": -613943577763.6431 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-07-18", "window": { "start": { "local": "1950-07-18T11:49:24+03:00", "utc": "1950-07-18T08:49:24Z", "ms": -614013035768.7689 }, "end": { "local": "1950-07-18T12:37:24+03:00", "utc": "1950-07-18T09:37:24Z", "ms": -614010155768.7689 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-07-19", "window": { "start": { "local": "1950-07-19T11:49:29+03:00", "utc": "1950-07-19T08:49:29Z", "ms": -613926631450.9741 }, "end": { "local": "1950-07-19T12:37:29+03:00", "utc": "1950-07-19T09:37:29Z", "ms": -613923751450.9741 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:54 on Tue 18 Jul to 07:07 on Wed 19 Jul.", "fact": "1950-07-18T04:54:25Z → 1950-07-19T04:07:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 18th, 11:49–12:37 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14099 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Tuesday 18 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": "1950-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-18", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Tuesday 18 July. Caturthī runs from 07:54 on Tue 18 Jul to 07:07 on Wed 19 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-07-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16946, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-07-19T07:07:02+03:00", "utc": "1950-07-19T04:07:02Z", "ms": -613943577763.6431 }, "end": { "local": "1950-07-20T06:00:06+03:00", "utc": "1950-07-20T03:00:06Z", "ms": -613861193849.8872 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-19T07:07:02+03:00", "utc": "1950-07-19T04:07:02Z", "ms": -613943577763.6431 }, "end": { "local": "1950-07-20T06:00:06+03:00", "utc": "1950-07-20T03:00:06Z", "ms": -613861193849.8872 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-07-19", "window": { "start": { "local": "1950-07-19T11:49:29+03:00", "utc": "1950-07-19T08:49:29Z", "ms": -613926631450.9741 }, "end": { "local": "1950-07-19T12:37:29+03:00", "utc": "1950-07-19T09:37:29Z", "ms": -613923751450.9741 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-07-20", "window": { "start": { "local": "1950-07-20T11:49:32+03:00", "utc": "1950-07-20T08:49:32Z", "ms": -613840227683.8358 }, "end": { "local": "1950-07-20T12:37:32+03:00", "utc": "1950-07-20T09:37:32Z", "ms": -613837347683.8358 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 07:07 on Wed 19 Jul to 06:00 on Thu 20 Jul.", "fact": "1950-07-19T04:07:02Z → 1950-07-20T03:00:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 19th, 11:50–12:38 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16946 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Mosul, 1950: Wednesday 19 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": "1950-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-19", "confidence": "determinate" } ], "quote": "In Mosul, Skanda Pañcamī 1950 falls on Wednesday 19 July. Pañcamī runs from 07:07 on Wed 19 Jul to 06:00 on Thu 20 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26128, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-07-21T04:34:08+03:00", "utc": "1950-07-21T01:34:08Z", "ms": -613779952310.0056 }, "end": { "local": "1950-07-22T02:49:29+03:00", "utc": "1950-07-21T23:49:29Z", "ms": -613699830653.4584 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-21T04:34:08+03:00", "utc": "1950-07-21T01:34:08Z", "ms": -613779952310.0056 }, "end": { "local": "1950-07-22T02:49:29+03:00", "utc": "1950-07-21T23:49:29Z", "ms": -613699830653.4584 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-07-21", "window": { "start": { "local": "1950-07-21T11:49:36+03:00", "utc": "1950-07-21T08:49:36Z", "ms": -613753824479.4285 }, "end": { "local": "1950-07-21T12:37:36+03:00", "utc": "1950-07-21T09:37:36Z", "ms": -613750944479.4285 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-07-22", "window": { "start": { "local": "1950-07-22T11:49:38+03:00", "utc": "1950-07-22T08:49:38Z", "ms": -613667421848.0469 }, "end": { "local": "1950-07-22T12:37:38+03:00", "utc": "1950-07-22T09:37:38Z", "ms": -613664541848.0469 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:34 on Fri 21 Jul to 02:49 on Sat 22 Jul.", "fact": "1950-07-21T01:34:08Z → 1950-07-21T23:49:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 21st, 11:50–12:38 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26128 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Mosul, 1950: Friday 21 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": "1950-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-21", "confidence": "determinate" } ], "quote": "In Mosul, Vivasvat Saptamī 1950 falls on Friday 21 July. Saptamī runs from 04:34 on Fri 21 Jul to 02:49 on Sat 22 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-07-25", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33121, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-07-24T19:56:09+03:00", "utc": "1950-07-24T16:56:09Z", "ms": -613465431165.609 }, "end": { "local": "1950-07-25T17:15:17+03:00", "utc": "1950-07-25T14:15:17Z", "ms": -613388682932.248 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-24T19:56:09+03:00", "utc": "1950-07-24T16:56:09Z", "ms": -613465431165.609 }, "end": { "local": "1950-07-25T17:15:17+03:00", "utc": "1950-07-25T14:15:17Z", "ms": -613388682932.248 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-07-25", "window": { "start": { "local": "1950-07-25T05:08:10+03:00", "utc": "1950-07-25T02:08:10Z", "ms": -613432310218.1423 }, "end": { "local": "1950-07-25T05:08:10+03:00", "utc": "1950-07-25T02:08:10Z", "ms": -613432310218.1423 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-07-26", "window": { "start": { "local": "1950-07-26T05:08:55+03:00", "utc": "1950-07-26T02:08:55Z", "ms": -613345864661.4585 }, "end": { "local": "1950-07-26T05:08:55+03:00", "utc": "1950-07-26T02:08:55Z", "ms": -613345864661.4585 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:56 on Mon 24 Jul to 17:15 on Tue 25 Jul.", "fact": "1950-07-24T16:56:09Z → 1950-07-25T14:15:17Z" }, { "step": "kaala", "text": "Sunrise is at 05:08 on the 25th and 05:09 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33121 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Mosul, 1950: Tuesday 25 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": "1950-07-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-25", "confidence": "determinate" } ], "quote": "In Mosul, Hariśayanī Ekādaśī 1950 falls on Tuesday 25 July. Ekādaśī runs from 19:56 on Mon 24 Jul to 17:15 on Tue 25 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-07-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-07-26", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17222, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-07-26T14:31:29+03:00", "utc": "1950-07-26T11:31:29Z", "ms": -613312111430.9614 }, "end": { "local": "1950-07-27T11:51:51+03:00", "utc": "1950-07-27T08:51:51Z", "ms": -613235289281.6567 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-26T14:31:29+03:00", "utc": "1950-07-26T11:31:29Z", "ms": -613312111430.9614 }, "end": { "local": "1950-07-27T11:51:51+03:00", "utc": "1950-07-27T08:51:51Z", "ms": -613235289281.6567 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-07-26", "window": { "start": { "local": "1950-07-26T19:18:30+03:00", "utc": "1950-07-26T16:18:30Z", "ms": -613294889723.8207 }, "end": { "local": "1950-07-26T20:37:20+03:00", "utc": "1950-07-26T17:37:20Z", "ms": -613290160261.0687 } }, "covered_min": 79, "window_min": 79, "qualifies": true }, { "local_date": "1950-07-27", "window": { "start": { "local": "1950-07-27T19:17:44+03:00", "utc": "1950-07-27T16:17:44Z", "ms": -613208536277.7024 }, "end": { "local": "1950-07-27T20:36:46+03:00", "utc": "1950-07-27T17:36:46Z", "ms": -613203794443.1384 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:31 on Wed 26 Jul to 11:52 on Thu 27 Jul.", "fact": "1950-07-26T11:31:29Z → 1950-07-27T08:51:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:19–20:37 on the 26th, 19:18–20:37 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 79 of 79 minutes on the 26th and 0 of 79 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17222 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Wednesday 26 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": "1950-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-26", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Wednesday 26 July. Trayodaśī runs from 14:31 on Wed 26 Jul to 11:52 on Thu 27 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-07-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-28", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2557, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 } }, "kaala": "udaya-3", "days": [ { "local_date": "1950-07-28", "window": { "start": { "local": "1950-07-28T05:10:27+03:00", "utc": "1950-07-28T02:10:27Z", "ms": -613172972518.4725 }, "end": { "local": "1950-07-28T07:59:45+03:00", "utc": "1950-07-28T04:59:45Z", "ms": -613162814885.1005 } }, "covered_min": 0, "window_min": 169, "qualifies": false }, { "local_date": "1950-07-29", "window": { "start": { "local": "1950-07-29T05:11:14+03:00", "utc": "1950-07-29T02:11:14Z", "ms": -613086525980.5264 }, "end": { "local": "1950-07-29T08:00:12+03:00", "utc": "1950-07-29T05:00:12Z", "ms": -613076387568.459 } }, "covered_min": 126, "window_min": 169, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul.", "fact": "1950-07-28T06:24:24Z → 1950-07-29T04:17:36Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:10–08:00 on the 28th, 05:11–08:00 on the 29th.", "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 169 minutes on the 28th and 126 of 169 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2557 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Mosul, 1950: Friday 28 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-07-28", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-28", "confidence": "boundary" } ], "quote": "In Mosul, Vyāsa Pūjā 1950 falls on Friday 28 July. Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8717, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-07-28", "window": { "start": { "local": "1950-07-28T11:49:42+03:00", "utc": "1950-07-28T08:49:42Z", "ms": -613149018435.0422 }, "end": { "local": "1950-07-28T12:37:42+03:00", "utc": "1950-07-28T09:37:42Z", "ms": -613146138435.0422 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-07-29", "window": { "start": { "local": "1950-07-29T11:49:40+03:00", "utc": "1950-07-29T08:49:40Z", "ms": -613062619950.3579 }, "end": { "local": "1950-07-29T12:37:40+03:00", "utc": "1950-07-29T09:37:40Z", "ms": -613059739950.3579 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul.", "fact": "1950-07-28T06:24:24Z → 1950-07-29T04:17:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 28th, 11:50–12:38 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8717 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Mosul, 1950: Friday 28 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": "1950-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-28", "confidence": "determinate" } ], "quote": "In Mosul, Guru Pūrṇimā 1950 falls on Friday 28 July. Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25394, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 } }, "kaala": "sayahna", "days": [ { "local_date": "1950-07-28", "window": { "start": { "local": "1950-07-28T16:27:38+03:00", "utc": "1950-07-28T13:27:38Z", "ms": -613132341984.984 }, "end": { "local": "1950-07-28T19:16:56+03:00", "utc": "1950-07-28T16:16:56Z", "ms": -613122184351.6119 } }, "covered_min": 169, "window_min": 169, "qualifies": true }, { "local_date": "1950-07-29", "window": { "start": { "local": "1950-07-29T16:27:08+03:00", "utc": "1950-07-29T13:27:08Z", "ms": -613045972332.2568 }, "end": { "local": "1950-07-29T19:16:06+03:00", "utc": "1950-07-29T16:16:06Z", "ms": -613035833920.1895 } }, "covered_min": 0, "window_min": 169, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul.", "fact": "1950-07-28T06:24:24Z → 1950-07-29T04:17:36Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:28–19:17 on the 28th, 16:27–19:16 on the 29th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 169 of 169 minutes on the 28th and 0 of 169 on the 29th.", "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 25394 s" }, { "step": "ruling", "text": "Kokilā Vrata, Mosul, 1950: Friday 28 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": "1950-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-28", "confidence": "determinate" } ], "quote": "In Mosul, Kokilā Vrata 1950 falls on Friday 28 July. Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35551, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1950-07-28T09:24:24+03:00", "utc": "1950-07-28T06:24:24Z", "ms": -613157735633.6495 }, "end": { "local": "1950-07-29T07:17:36+03:00", "utc": "1950-07-29T04:17:36Z", "ms": -613078944480.1635 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-07-28", "window": { "start": { "local": "1950-07-28T19:16:56+03:00", "utc": "1950-07-28T16:16:56Z", "ms": -613122184351.6119 }, "end": { "local": "1950-07-28T20:36:10+03:00", "utc": "1950-07-28T17:36:10Z", "ms": -613117429902.1339 } }, "covered_min": 79, "window_min": 79, "qualifies": true }, { "local_date": "1950-07-29", "window": { "start": { "local": "1950-07-29T19:16:06+03:00", "utc": "1950-07-29T16:16:06Z", "ms": -613035833920.1895 }, "end": { "local": "1950-07-29T20:35:33+03:00", "utc": "1950-07-29T17:35:33Z", "ms": -613031066618.9619 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul.", "fact": "1950-07-28T06:24:24Z → 1950-07-29T04:17:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:17–20:36 on the 28th, 19:16–20:36 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 79 of 79 minutes on the 28th and 0 of 79 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35551 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Mosul, 1950: Friday 28 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": "1950-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-28", "confidence": "determinate" } ], "quote": "In Mosul, Śiva Śayanotsava 1950 falls on Friday 28 July. Pūrṇimā runs from 09:24 on Fri 28 Jul to 07:18 on Sat 29 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29600, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1950-07-30T05:39:39+03:00", "utc": "1950-07-30T02:39:39Z", "ms": -612998420831.7383 }, "end": { "local": "1950-07-31T04:37:54+03:00", "utc": "1950-07-31T01:37:54Z", "ms": -612915726133.6104 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-07-30T05:39:39+03:00", "utc": "1950-07-30T02:39:39Z", "ms": -612998420831.7383 }, "end": { "local": "1950-07-31T04:37:54+03:00", "utc": "1950-07-31T01:37:54Z", "ms": -612915726133.6104 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-07-29", "window": { "start": { "local": "1950-07-29T19:52:25+03:00", "utc": "1950-07-29T16:52:25Z", "ms": -613033654705.0424 }, "end": { "local": "1950-07-29T19:52:25+03:00", "utc": "1950-07-29T16:52:25Z", "ms": -613033654705.0424 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-07-30", "window": { "start": { "local": "1950-07-30T20:24:34+03:00", "utc": "1950-07-30T17:24:34Z", "ms": -612945326387.1489 }, "end": { "local": "1950-07-30T20:24:34+03:00", "utc": "1950-07-30T17:24:34Z", "ms": -612945326387.1489 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 05:40 on Sun 30 Jul to 04:38 on Mon 31 Jul.", "fact": "1950-07-30T02:39:39Z → 1950-07-31T01:37:54Z" }, { "step": "kaala", "text": "Moonrise is at 19:52 on the 29th and 20:25 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā 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. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29600 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Mosul, 1950: Sunday 30 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": "1950-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-07-30", "confidence": "determinate" } ], "quote": "In Mosul, Aśūnya Śayana Vrata (Āṣāḍha) 1950 falls on Sunday 30 July. Dvitīyā runs from 05:40 on Sun 30 Jul to 04:38 on Mon 31 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-08-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26749, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-08-01T04:17:47+03:00", "utc": "1950-08-01T01:17:47Z", "ms": -612830533434.0708 }, "end": { "local": "1950-08-02T04:41:51+03:00", "utc": "1950-08-02T01:41:51Z", "ms": -612742689083.7937 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-01T04:17:47+03:00", "utc": "1950-08-01T01:17:47Z", "ms": -612830533434.0708 }, "end": { "local": "1950-08-02T04:41:51+03:00", "utc": "1950-08-02T01:41:51Z", "ms": -612742689083.7937 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-07-31", "window": { "start": { "local": "1950-07-31T20:51:47+03:00", "utc": "1950-07-31T17:51:47Z", "ms": -612857293267.8423 }, "end": { "local": "1950-07-31T20:51:47+03:00", "utc": "1950-07-31T17:51:47Z", "ms": -612857293267.8423 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-08-01", "window": { "start": { "local": "1950-08-01T21:16:02+03:00", "utc": "1950-08-01T18:16:02Z", "ms": -612769437644.4642 }, "end": { "local": "1950-08-01T21:16:02+03:00", "utc": "1950-08-01T18:16:02Z", "ms": -612769437644.4642 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:18 on Tue 1 Aug to 04:42 on Wed 2 Aug.", "fact": "1950-08-01T01:17:47Z → 1950-08-02T01:41:51Z" }, { "step": "kaala", "text": "Moonrise is at 20:52 on the 31st and 21:16 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26749 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Tuesday 1 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": "1950-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-01", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Tuesday 1 August. Caturthī runs from 04:18 on Tue 1 Aug to 04:42 on Wed 2 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-08-09", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39278, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-08-08T16:42:10+03:00", "utc": "1950-08-08T13:42:10Z", "ms": -612181070135.9343 }, "end": { "local": "1950-08-09T18:26:11+03:00", "utc": "1950-08-09T15:26:11Z", "ms": -612088429491.7323 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-08T16:42:10+03:00", "utc": "1950-08-08T13:42:10Z", "ms": -612181070135.9343 }, "end": { "local": "1950-08-09T18:26:11+03:00", "utc": "1950-08-09T15:26:11Z", "ms": -612088429491.7323 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-08-09", "window": { "start": { "local": "1950-08-09T05:20:00+03:00", "utc": "1950-08-09T02:20:00Z", "ms": -612135599922.8223 }, "end": { "local": "1950-08-09T05:20:00+03:00", "utc": "1950-08-09T02:20:00Z", "ms": -612135599922.8223 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-08-10", "window": { "start": { "local": "1950-08-10T05:20:49+03:00", "utc": "1950-08-10T02:20:49Z", "ms": -612049151331.3147 }, "end": { "local": "1950-08-10T05:20:49+03:00", "utc": "1950-08-10T02:20:49Z", "ms": -612049151331.3147 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:42 on Tue 8 Aug to 18:26 on Wed 9 Aug.", "fact": "1950-08-08T13:42:10Z → 1950-08-09T15:26:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 9th and 05:21 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39278 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Mosul, 1950: Wednesday 9 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": "1950-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-09", "confidence": "determinate" } ], "quote": "In Mosul, Kāmikā Ekādaśī 1950 falls on Wednesday 9 August. Ekādaśī runs from 16:42 on Tue 8 Aug to 18:26 on Wed 9 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-08-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 653, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-08-10T19:38:03+03:00", "utc": "1950-08-10T16:38:03Z", "ms": -611997717183.9174 }, "end": { "local": "1950-08-11T20:14:57+03:00", "utc": "1950-08-11T17:14:57Z", "ms": -611909102924.7715 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-10T19:38:03+03:00", "utc": "1950-08-10T16:38:03Z", "ms": -611997717183.9174 }, "end": { "local": "1950-08-11T20:14:57+03:00", "utc": "1950-08-11T17:14:57Z", "ms": -611909102924.7715 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-08-10", "window": { "start": { "local": "1950-08-10T19:04:24+03:00", "utc": "1950-08-10T16:04:24Z", "ms": -611999735999.527 }, "end": { "local": "1950-08-10T20:26:42+03:00", "utc": "1950-08-10T17:26:42Z", "ms": -611994798225.5953 } }, "covered_min": 49, "window_min": 82, "qualifies": true }, { "local_date": "1950-08-11", "window": { "start": { "local": "1950-08-11T19:03:17+03:00", "utc": "1950-08-11T16:03:17Z", "ms": -611913402659.1959 }, "end": { "local": "1950-08-11T20:25:50+03:00", "utc": "1950-08-11T17:25:50Z", "ms": -611908449508.9257 } }, "covered_min": 72, "window_min": 83, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:38 on Thu 10 Aug to 20:15 on Fri 11 Aug.", "fact": "1950-08-10T16:38:03Z → 1950-08-11T17:14:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:04–20:27 on the 10th, 19:03–20:26 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 49 of 82 minutes on the 10th and 72 of 83 on the 11th.", "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 653 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Friday 11 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-08-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-10", "confidence": "boundary" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Friday 11 August. Trayodaśī runs from 19:38 on Thu 10 Aug to 20:15 on Fri 11 Aug and covers 72 of 83 minutes of pradoṣa that evening. It also reaches the previous evening for 49 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/mosul/festivals/1950/pradosha-vrata?on=1950-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-08-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12678, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-08-11T20:14:57+03:00", "utc": "1950-08-11T17:14:57Z", "ms": -611909102924.7715 }, "end": { "local": "1950-08-12T20:17:24+03:00", "utc": "1950-08-12T17:17:24Z", "ms": -611822555931.4532 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-11T20:14:57+03:00", "utc": "1950-08-11T17:14:57Z", "ms": -611909102924.7715 }, "end": { "local": "1950-08-12T20:17:24+03:00", "utc": "1950-08-12T17:17:24Z", "ms": -611822555931.4532 } }, "kaala": "nishita", "days": [ { "local_date": "1950-08-11", "window": { "start": { "local": "1950-08-11T23:48:52+03:00", "utc": "1950-08-11T20:48:52Z", "ms": -611896268345.6824 }, "end": { "local": "1950-08-12T00:36:52+03:00", "utc": "1950-08-11T21:36:52Z", "ms": -611893388345.6824 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-08-12", "window": { "start": { "local": "1950-08-12T23:48:42+03:00", "utc": "1950-08-12T20:48:42Z", "ms": -611809877906.4395 }, "end": { "local": "1950-08-13T00:36:42+03:00", "utc": "1950-08-12T21:36:42Z", "ms": -611806997906.4395 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:15 on Fri 11 Aug to 20:17 on Sat 12 Aug.", "fact": "1950-08-11T17:14:57Z → 1950-08-12T17:17:24Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:49–00:37 on the 11th, 23:49–00:37 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12678 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Friday 11 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": "1950-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-11", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Friday 11 August. Caturdaśī runs from 20:15 on Fri 11 Aug to 20:17 on Sat 12 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12006, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-08-15T17:32:43+03:00", "utc": "1950-08-15T14:32:43Z", "ms": -611573237430.8231 }, "end": { "local": "1950-08-16T15:55:40+03:00", "utc": "1950-08-16T12:55:40Z", "ms": -611492660036.6581 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-15T17:32:43+03:00", "utc": "1950-08-15T14:32:43Z", "ms": -611573237430.8231 }, "end": { "local": "1950-08-16T15:55:40+03:00", "utc": "1950-08-16T12:55:40Z", "ms": -611492660036.6581 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-15", "window": { "start": { "local": "1950-08-15T11:47:46+03:00", "utc": "1950-08-15T08:47:46Z", "ms": -611593934219.6538 }, "end": { "local": "1950-08-15T12:35:46+03:00", "utc": "1950-08-15T09:35:46Z", "ms": -611591054219.6538 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-16", "window": { "start": { "local": "1950-08-16T11:47:34+03:00", "utc": "1950-08-16T08:47:34Z", "ms": -611507545958.0825 }, "end": { "local": "1950-08-16T12:35:34+03:00", "utc": "1950-08-16T09:35:34Z", "ms": -611504665958.0825 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:33 on Tue 15 Aug to 15:56 on Wed 16 Aug.", "fact": "1950-08-15T14:32:43Z → 1950-08-16T12:55:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 15th, 11:48–12:36 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12006 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Mosul, 1950: Wednesday 16 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": "1950-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-16", "confidence": "determinate" } ], "quote": "In Mosul, Madhusravā Tṛtīyā (Hariyali Teej) 1950 falls on Wednesday 16 August. Tṛtīyā runs from 17:33 on Tue 15 Aug to 15:56 on Wed 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-08-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5368, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-08-16T15:55:40+03:00", "utc": "1950-08-16T12:55:40Z", "ms": -611492660036.6581 }, "end": { "local": "1950-08-17T14:04:50+03:00", "utc": "1950-08-17T11:04:50Z", "ms": -611412909778.598 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-16T15:55:40+03:00", "utc": "1950-08-16T12:55:40Z", "ms": -611492660036.6581 }, "end": { "local": "1950-08-17T14:04:50+03:00", "utc": "1950-08-17T11:04:50Z", "ms": -611412909778.598 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-16", "window": { "start": { "local": "1950-08-16T11:47:34+03:00", "utc": "1950-08-16T08:47:34Z", "ms": -611507545958.0825 }, "end": { "local": "1950-08-16T12:35:34+03:00", "utc": "1950-08-16T09:35:34Z", "ms": -611504665958.0825 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-17", "window": { "start": { "local": "1950-08-17T11:47:22+03:00", "utc": "1950-08-17T08:47:22Z", "ms": -611421158227.1271 }, "end": { "local": "1950-08-17T12:35:22+03:00", "utc": "1950-08-17T09:35:22Z", "ms": -611418278227.1271 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:56 on Wed 16 Aug to 14:05 on Thu 17 Aug.", "fact": "1950-08-16T12:55:40Z → 1950-08-17T11:04:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 16th, 11:47–12:35 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5368 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Thursday 17 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": "1950-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-17", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Thursday 17 August. Caturthī runs from 15:56 on Wed 16 Aug to 14:05 on Thu 17 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-08-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 998, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-08-17T14:04:50+03:00", "utc": "1950-08-17T11:04:50Z", "ms": -611412909778.598 }, "end": { "local": "1950-08-18T12:03:47+03:00", "utc": "1950-08-18T09:03:47Z", "ms": -611333772793.0862 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-17T14:04:50+03:00", "utc": "1950-08-17T11:04:50Z", "ms": -611412909778.598 }, "end": { "local": "1950-08-18T12:03:47+03:00", "utc": "1950-08-18T09:03:47Z", "ms": -611333772793.0862 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-17", "window": { "start": { "local": "1950-08-17T11:47:22+03:00", "utc": "1950-08-17T08:47:22Z", "ms": -611421158227.1271 }, "end": { "local": "1950-08-17T12:35:22+03:00", "utc": "1950-08-17T09:35:22Z", "ms": -611418278227.1271 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-18", "window": { "start": { "local": "1950-08-18T11:47:09+03:00", "utc": "1950-08-18T08:47:09Z", "ms": -611334771019.772 }, "end": { "local": "1950-08-18T12:35:09+03:00", "utc": "1950-08-18T09:35:09Z", "ms": -611331891019.772 } }, "covered_min": 17, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:05 on Thu 17 Aug to 12:04 on Fri 18 Aug.", "fact": "1950-08-17T11:04:50Z → 1950-08-18T09:03:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 17th, 11:47–12:35 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 17 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: paraviddha → only-day · margin 998 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Mosul, 1950: Friday 18 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": "1950-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-18", "confidence": "determinate" } ], "quote": "In Mosul, Nāga Pañcamī 1950 falls on Friday 18 August. Pañcamī runs from 14:05 on Thu 17 Aug to 12:04 on Fri 18 Aug and covers 17 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-08-23", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16052, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-08-23T01:03:46+03:00", "utc": "1950-08-22T22:03:46Z", "ms": -610941373645.7671 }, "end": { "local": "1950-08-23T23:01:44+03:00", "utc": "1950-08-23T20:01:44Z", "ms": -610862295611.9148 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-23T01:03:46+03:00", "utc": "1950-08-22T22:03:46Z", "ms": -610941373645.7671 }, "end": { "local": "1950-08-23T23:01:44+03:00", "utc": "1950-08-23T20:01:44Z", "ms": -610862295611.9148 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-08-23", "window": { "start": { "local": "1950-08-23T05:31:19+03:00", "utc": "1950-08-23T02:31:19Z", "ms": -610925321384.9364 }, "end": { "local": "1950-08-23T05:31:19+03:00", "utc": "1950-08-23T02:31:19Z", "ms": -610925321384.9364 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-08-24", "window": { "start": { "local": "1950-08-24T05:32:07+03:00", "utc": "1950-08-24T02:32:07Z", "ms": -610838873472.8896 }, "end": { "local": "1950-08-24T05:32:07+03:00", "utc": "1950-08-24T02:32:07Z", "ms": -610838873472.8896 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:04 on Wed 23 Aug to 23:02 on Wed 23 Aug.", "fact": "1950-08-22T22:03:46Z → 1950-08-23T20:01:44Z" }, { "step": "kaala", "text": "Sunrise is at 05:31 on the 23rd and 05:32 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16052 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Mosul, 1950: Wednesday 23 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": "1950-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-23", "confidence": "determinate" } ], "quote": "In Mosul, Putradā Ekādaśī 1950 falls on Wednesday 23 August. Ekādaśī runs from 01:04 on Wed 23 Aug to 23:02 on Wed 23 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-08-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31113, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-08-23T23:01:44+03:00", "utc": "1950-08-23T20:01:44Z", "ms": -610862295611.9148 }, "end": { "local": "1950-08-24T21:12:15+03:00", "utc": "1950-08-24T18:12:15Z", "ms": -610782465249.4801 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-23T23:01:44+03:00", "utc": "1950-08-23T20:01:44Z", "ms": -610862295611.9148 }, "end": { "local": "1950-08-24T21:12:15+03:00", "utc": "1950-08-24T18:12:15Z", "ms": -610782465249.4801 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-23", "window": { "start": { "local": "1950-08-23T11:45:58+03:00", "utc": "1950-08-23T08:45:58Z", "ms": -610902842493.0497 }, "end": { "local": "1950-08-23T12:33:58+03:00", "utc": "1950-08-23T09:33:58Z", "ms": -610899962493.0497 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-24", "window": { "start": { "local": "1950-08-24T11:45:42+03:00", "utc": "1950-08-24T08:45:42Z", "ms": -610816458200.8694 }, "end": { "local": "1950-08-24T12:33:42+03:00", "utc": "1950-08-24T09:33:42Z", "ms": -610813578200.8694 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:02 on Wed 23 Aug to 21:12 on Thu 24 Aug.", "fact": "1950-08-23T20:01:44Z → 1950-08-24T18:12:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 23rd, 11:46–12:34 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31113 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Mosul, 1950: Thursday 24 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": "1950-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-24", "confidence": "determinate" } ], "quote": "In Mosul, Dāmodara Dvādaśī 1950 falls on Thursday 24 August. Dvādaśī runs from 23:02 on Wed 23 Aug to 21:12 on Thu 24 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-08-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1915, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-08-24T21:12:15+03:00", "utc": "1950-08-24T18:12:15Z", "ms": -610782465249.4801 }, "end": { "local": "1950-08-25T19:40:24+03:00", "utc": "1950-08-25T16:40:24Z", "ms": -610701576266.1238 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-24T21:12:15+03:00", "utc": "1950-08-24T18:12:15Z", "ms": -610782465249.4801 }, "end": { "local": "1950-08-25T19:40:24+03:00", "utc": "1950-08-25T16:40:24Z", "ms": -610701576266.1238 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-08-24", "window": { "start": { "local": "1950-08-24T18:47:17+03:00", "utc": "1950-08-24T15:47:17Z", "ms": -610791162928.849 }, "end": { "local": "1950-08-24T20:13:22+03:00", "utc": "1950-08-24T17:13:22Z", "ms": -610785997959.9143 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1950-08-25", "window": { "start": { "local": "1950-08-25T18:45:57+03:00", "utc": "1950-08-25T15:45:57Z", "ms": -610704843026.2609 }, "end": { "local": "1950-08-25T20:12:19+03:00", "utc": "1950-08-25T17:12:19Z", "ms": -610699661015.849 } }, "covered_min": 54, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:12 on Thu 24 Aug to 19:40 on Fri 25 Aug.", "fact": "1950-08-24T18:12:15Z → 1950-08-25T16:40:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:47–20:13 on the 24th, 18:46–20:12 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 86 minutes on the 24th and 54 of 86 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 1915 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Friday 25 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": "1950-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-25", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Friday 25 August. Trayodaśī runs from 21:12 on Thu 24 Aug to 19:40 on Fri 25 Aug and covers 54 of 86 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-08-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1974, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-08-26T18:31:33+03:00", "utc": "1950-08-26T15:31:33Z", "ms": -610619306965.0173 }, "end": { "local": "1950-08-27T17:50:54+03:00", "utc": "1950-08-27T14:50:54Z", "ms": -610535346395.1407 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1950-08-27T06:07:24+03:00", "utc": "1950-08-27T03:07:24Z", "ms": -610577556191.0403 }, "end": { "local": "1950-08-27T17:50:54+03:00", "utc": "1950-08-27T14:50:54Z", "ms": -610535346395.1407 } }, "kaala": "day", "days": [ { "local_date": "1950-08-26", "window": { "start": { "local": "1950-08-26T05:33:42+03:00", "utc": "1950-08-26T02:33:42Z", "ms": -610665977948.1719 }, "end": { "local": "1950-08-27T05:34:30+03:00", "utc": "1950-08-27T02:34:30Z", "ms": -610579530326.667 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1950-08-27", "window": { "start": { "local": "1950-08-27T05:34:30+03:00", "utc": "1950-08-27T02:34:30Z", "ms": -610579530326.667 }, "end": { "local": "1950-08-28T05:35:17+03:00", "utc": "1950-08-28T02:35:17Z", "ms": -610493082790.9287 } }, "covered_min": 703, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:32 on Sat 26 Aug to 17:51 on Sun 27 Aug. Its second half begins at 06:07 on Sun 27 Aug.", "fact": "1950-08-26T15:31:33Z → 1950-08-27T14:50:54Z · second half from 1950-08-27T03:07:24Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:34 on the 26th, and from 05:34 on the 27th.", "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 26th and 703 of 1441 on the 27th.", "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 1974 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Mosul, 1950: Sunday 27 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": "1950-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-27", "confidence": "determinate" } ], "quote": "In Mosul, Rakṣā Bandhana (Rakhi) 1950 falls on Sunday 27 August. The second half of Pūrṇimā runs from 06:07 on Sun 27 Aug to 17:51 on Sun 27 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19081, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-08-26T18:31:33+03:00", "utc": "1950-08-26T15:31:33Z", "ms": -610619306965.0173 }, "end": { "local": "1950-08-27T17:50:54+03:00", "utc": "1950-08-27T14:50:54Z", "ms": -610535346395.1407 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1950-08-26T18:31:33+03:00", "utc": "1950-08-26T15:31:33Z", "ms": -610619306965.0173 }, "end": { "local": "1950-08-27T17:50:54+03:00", "utc": "1950-08-27T14:50:54Z", "ms": -610535346395.1407 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-26", "window": { "start": { "local": "1950-08-26T11:45:09+03:00", "utc": "1950-08-26T08:45:09Z", "ms": -610643690905.1827 }, "end": { "local": "1950-08-26T12:33:09+03:00", "utc": "1950-08-26T09:33:09Z", "ms": -610640810905.1827 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-27", "window": { "start": { "local": "1950-08-27T11:44:52+03:00", "utc": "1950-08-27T08:44:52Z", "ms": -610557307866.1516 }, "end": { "local": "1950-08-27T12:32:52+03:00", "utc": "1950-08-27T09:32:52Z", "ms": -610554427866.1516 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:32 on Sat 26 Aug to 17:51 on Sun 27 Aug.", "fact": "1950-08-26T15:31:33Z → 1950-08-27T14:50:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 26th, 11:45–12:33 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19081 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Mosul, 1950: Sunday 27 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": "1950-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-27", "confidence": "determinate" } ], "quote": "In Mosul, Ṛṣi Tarpaṇa 1950 falls on Sunday 27 August. Pūrṇimā runs from 18:32 on Sat 26 Aug to 17:51 on Sun 27 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5427, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1950-08-28T17:42:50+03:00", "utc": "1950-08-28T14:42:50Z", "ms": -610449430066.8087 }, "end": { "local": "1950-08-29T18:10:16+03:00", "utc": "1950-08-29T15:10:16Z", "ms": -610361384429.2422 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-08-28T17:42:50+03:00", "utc": "1950-08-28T14:42:50Z", "ms": -610449430066.8087 }, "end": { "local": "1950-08-29T18:10:16+03:00", "utc": "1950-08-29T15:10:16Z", "ms": -610361384429.2422 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-08-28", "window": { "start": { "local": "1950-08-28T19:17:23+03:00", "utc": "1950-08-28T16:17:23Z", "ms": -610443756740.6814 }, "end": { "local": "1950-08-28T19:17:23+03:00", "utc": "1950-08-28T16:17:23Z", "ms": -610443756740.6814 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-08-29", "window": { "start": { "local": "1950-08-29T19:40:43+03:00", "utc": "1950-08-29T16:40:43Z", "ms": -610355957375.167 }, "end": { "local": "1950-08-29T19:40:43+03:00", "utc": "1950-08-29T16:40:43Z", "ms": -610355957375.167 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 17:43 on Mon 28 Aug to 18:10 on Tue 29 Aug.", "fact": "1950-08-28T14:42:50Z → 1950-08-29T15:10:16Z" }, { "step": "kaala", "text": "Moonrise is at 19:17 on the 28th and 19:41 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5427 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Mosul, 1950: Monday 28 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": "1950-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-28", "confidence": "determinate" } ], "quote": "In Mosul, Aśūnya Śayana Vrata 1950 falls on Monday 28 August. Dvitīyā runs from 17:43 on Mon 28 Aug to 18:10 on Tue 29 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20278, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-08-29T18:10:16+03:00", "utc": "1950-08-29T15:10:16Z", "ms": -610361384429.2422 }, "end": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-08-29T18:10:16+03:00", "utc": "1950-08-29T15:10:16Z", "ms": -610361384429.2422 }, "end": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-08-29", "window": { "start": { "local": "1950-08-29T11:44:17+03:00", "utc": "1950-08-29T08:44:17Z", "ms": -610384542912.9978 }, "end": { "local": "1950-08-29T12:32:17+03:00", "utc": "1950-08-29T09:32:17Z", "ms": -610381662912.9978 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-08-30", "window": { "start": { "local": "1950-08-30T11:43:59+03:00", "utc": "1950-08-30T08:43:59Z", "ms": -610298160961.1692 }, "end": { "local": "1950-08-30T12:31:59+03:00", "utc": "1950-08-30T09:31:59Z", "ms": -610295280961.1692 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 18:10 on Tue 29 Aug to 19:14 on Wed 30 Aug.", "fact": "1950-08-29T15:10:16Z → 1950-08-30T16:13:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 29th, 11:44–12:32 on the 30th.", "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 29th and 48 of 48 on the 30th.", "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 20278 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Mosul, 1950: Wednesday 30 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": "1950-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-30", "confidence": "determinate" } ], "quote": "In Mosul, Kajjalī Tṛtīyā (Kajari Teej) 1950 falls on Wednesday 30 August. Tṛtīyā runs from 18:10 on Tue 29 Aug to 19:14 on Wed 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-08-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-30", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1414, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 }, "end": { "local": "1950-08-31T20:50:38+03:00", "utc": "1950-08-31T17:50:38Z", "ms": -610178962138.0112 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 }, "end": { "local": "1950-08-31T20:50:38+03:00", "utc": "1950-08-31T17:50:38Z", "ms": -610178962138.0112 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-08-30", "window": { "start": { "local": "1950-08-30T20:03:31+03:00", "utc": "1950-08-30T17:03:31Z", "ms": -610268188541.9729 }, "end": { "local": "1950-08-30T20:03:31+03:00", "utc": "1950-08-30T17:03:31Z", "ms": -610268188541.9729 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-08-31", "window": { "start": { "local": "1950-08-31T20:27:04+03:00", "utc": "1950-08-31T17:27:04Z", "ms": -610180375972.1244 }, "end": { "local": "1950-08-31T20:27:04+03:00", "utc": "1950-08-31T17:27:04Z", "ms": -610180375972.1244 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:14 on Wed 30 Aug to 20:51 on Thu 31 Aug.", "fact": "1950-08-30T16:13:43Z → 1950-08-31T17:50:38Z" }, { "step": "kaala", "text": "Moonrise is at 20:04 on the 30th and 20:27 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 30th and is on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both moonrises qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1414 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Wednesday 30 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-08-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-30", "confidence": "boundary" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Wednesday 30 August. Caturthī runs from 19:14 on Wed 30 Aug to 20:51 on Thu 31 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2077, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 }, "end": { "local": "1950-08-31T20:50:38+03:00", "utc": "1950-08-31T17:50:38Z", "ms": -610178962138.0112 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-08-30T19:13:43+03:00", "utc": "1950-08-30T16:13:43Z", "ms": -610271176724.269 }, "end": { "local": "1950-08-31T20:50:38+03:00", "utc": "1950-08-31T17:50:38Z", "ms": -610178962138.0112 } }, "kaala": "sayahna", "days": [ { "local_date": "1950-08-30", "window": { "start": { "local": "1950-08-30T16:02:39+03:00", "utc": "1950-08-30T13:02:39Z", "ms": -610282640769.0469 }, "end": { "local": "1950-08-30T18:39:06+03:00", "utc": "1950-08-30T15:39:06Z", "ms": -610273253974.2987 } }, "covered_min": 0, "window_min": 156, "qualifies": false }, { "local_date": "1950-08-31", "window": { "start": { "local": "1950-08-31T16:01:41+03:00", "utc": "1950-08-31T13:01:41Z", "ms": -610196298558.9342 }, "end": { "local": "1950-08-31T18:37:42+03:00", "utc": "1950-08-31T15:37:42Z", "ms": -610186938042.1481 } }, "covered_min": 156, "window_min": 156, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:14 on Wed 30 Aug to 20:51 on Thu 31 Aug.", "fact": "1950-08-30T16:13:43Z → 1950-08-31T17:50:38Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:03–18:39 on the 30th, 16:02–18:38 on the 31st.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 156 minutes on the 30th and 156 of 156 on the 31st.", "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 2077 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Mosul, 1950: Thursday 31 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": "1950-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-08-31", "confidence": "determinate" } ], "quote": "In Mosul, Bahulā Caturthī 1950 falls on Thursday 31 August. Caturthī runs from 19:14 on Wed 30 Aug to 20:51 on Thu 31 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37404, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-09-01T22:54:46+03:00", "utc": "1950-09-01T19:54:46Z", "ms": -610085114382.1945 }, "end": { "local": "1950-09-03T01:16:18+03:00", "utc": "1950-09-02T22:16:18Z", "ms": -609990222447.7112 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-01T22:54:46+03:00", "utc": "1950-09-01T19:54:46Z", "ms": -610085114382.1945 }, "end": { "local": "1950-09-03T01:16:18+03:00", "utc": "1950-09-02T22:16:18Z", "ms": -609990222447.7112 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-01", "window": { "start": { "local": "1950-09-01T11:43:22+03:00", "utc": "1950-09-01T08:43:22Z", "ms": -610125398013.2487 }, "end": { "local": "1950-09-01T12:31:22+03:00", "utc": "1950-09-01T09:31:22Z", "ms": -610122518013.2487 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-02", "window": { "start": { "local": "1950-09-02T11:43:03+03:00", "utc": "1950-09-02T08:43:03Z", "ms": -610039016980.2058 }, "end": { "local": "1950-09-02T12:31:03+03:00", "utc": "1950-09-02T09:31:03Z", "ms": -610036136980.2058 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 22:55 on Fri 1 Sep to 01:16 on Sun 3 Sep.", "fact": "1950-09-01T19:54:46Z → 1950-09-02T22:16:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 1st, 11:43–12:31 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37404 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Mosul, 1950: Saturday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-02", "confidence": "determinate" } ], "quote": "In Mosul, Hala Ṣaṣṭhī 1950 falls on Saturday 2 September. Ṣaṣṭhī runs from 22:55 on Fri 1 Sep to 01:16 on Sun 3 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28785, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-09-03T01:16:18+03:00", "utc": "1950-09-02T22:16:18Z", "ms": -609990222447.7112 }, "end": { "local": "1950-09-04T03:42:39+03:00", "utc": "1950-09-04T00:42:39Z", "ms": -609895040564.6929 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-03T01:16:18+03:00", "utc": "1950-09-02T22:16:18Z", "ms": -609990222447.7112 }, "end": { "local": "1950-09-04T03:42:39+03:00", "utc": "1950-09-04T00:42:39Z", "ms": -609895040564.6929 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-03", "window": { "start": { "local": "1950-09-03T11:42:44+03:00", "utc": "1950-09-03T08:42:44Z", "ms": -609952636216.8201 }, "end": { "local": "1950-09-03T12:30:44+03:00", "utc": "1950-09-03T09:30:44Z", "ms": -609949756216.8201 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-09-04", "window": { "start": { "local": "1950-09-04T11:42:24+03:00", "utc": "1950-09-04T08:42:24Z", "ms": -609866255705.1118 }, "end": { "local": "1950-09-04T12:30:24+03:00", "utc": "1950-09-04T09:30:24Z", "ms": -609863375705.1118 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 01:16 on Sun 3 Sep to 03:43 on Mon 4 Sep.", "fact": "1950-09-02T22:16:18Z → 1950-09-04T00:42:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 3rd, 11:42–12:30 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28785 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Mosul, 1950: Sunday 3 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-03", "confidence": "determinate" } ], "quote": "In Mosul, Śītalā Saptamī 1950 falls on Sunday 3 September. Saptamī runs from 01:16 on Sun 3 Sep to 03:43 on Mon 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11492, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-09-04T03:42:39+03:00", "utc": "1950-09-04T00:42:39Z", "ms": -609895040564.6929 }, "end": { "local": "1950-09-05T06:00:07+03:00", "utc": "1950-09-05T03:00:07Z", "ms": -609800393181.7212 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-04T03:42:39+03:00", "utc": "1950-09-04T00:42:39Z", "ms": -609895040564.6929 }, "end": { "local": "1950-09-05T06:00:07+03:00", "utc": "1950-09-05T03:00:07Z", "ms": -609800393181.7212 } }, "kaala": "nishita", "days": [ { "local_date": "1950-09-03", "window": { "start": { "local": "1950-09-03T23:43:07+03:00", "utc": "1950-09-03T20:43:07Z", "ms": -609909412648.1582 }, "end": { "local": "1950-09-04T00:31:07+03:00", "utc": "1950-09-03T21:31:07Z", "ms": -609906532648.1582 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-04", "window": { "start": { "local": "1950-09-04T23:42:48+03:00", "utc": "1950-09-04T20:42:48Z", "ms": -609823032151.0903 }, "end": { "local": "1950-09-05T00:30:48+03:00", "utc": "1950-09-04T21:30:48Z", "ms": -609820152151.0903 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:43 on Mon 4 Sep to 06:00 on Tue 5 Sep.", "fact": "1950-09-04T00:42:39Z → 1950-09-05T03:00:07Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:43–00:31 on the 3rd, 23:43–00:31 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī 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. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11492 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Mosul, 1950: Monday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-04", "confidence": "determinate" } ], "quote": "In Mosul, Janmāṣṭamī 1950 falls on Monday 4 September. Aṣṭamī runs from 03:43 on Mon 4 Sep to 06:00 on Tue 5 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-09-08", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12958, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-09-07T09:19:08+03:00", "utc": "1950-09-07T06:19:08Z", "ms": -609615652410.1559 }, "end": { "local": "1950-09-08T10:03:41+03:00", "utc": "1950-09-08T07:03:41Z", "ms": -609526578925.888 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-07T09:19:08+03:00", "utc": "1950-09-07T06:19:08Z", "ms": -609615652410.1559 }, "end": { "local": "1950-09-08T10:03:41+03:00", "utc": "1950-09-08T07:03:41Z", "ms": -609526578925.888 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-09-07", "window": { "start": { "local": "1950-09-07T05:43:09+03:00", "utc": "1950-09-07T02:43:09Z", "ms": -609628610572.3209 }, "end": { "local": "1950-09-07T05:43:09+03:00", "utc": "1950-09-07T02:43:09Z", "ms": -609628610572.3209 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-09-08", "window": { "start": { "local": "1950-09-08T05:43:56+03:00", "utc": "1950-09-08T02:43:56Z", "ms": -609542163514.089 }, "end": { "local": "1950-09-08T05:43:56+03:00", "utc": "1950-09-08T02:43:56Z", "ms": -609542163514.089 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:19 on Thu 7 Sep to 10:04 on Fri 8 Sep.", "fact": "1950-09-07T06:19:08Z → 1950-09-08T07:03:41Z" }, { "step": "kaala", "text": "Sunrise is at 05:43 on the 7th and 05:44 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 12958 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Mosul, 1950: Friday 8 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": "1950-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-08", "confidence": "determinate" } ], "quote": "In Mosul, Ajā Ekādaśī 1950 falls on Friday 8 September. Ekādaśī runs from 09:19 on Thu 7 Sep to 10:04 on Fri 8 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-09-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-09-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29880, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-09-09T10:06:44+03:00", "utc": "1950-09-09T07:06:44Z", "ms": -609439995993.3745 }, "end": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-09T10:06:44+03:00", "utc": "1950-09-09T07:06:44Z", "ms": -609439995993.3745 }, "end": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-09-09", "window": { "start": { "local": "1950-09-09T18:24:44+03:00", "utc": "1950-09-09T15:24:44Z", "ms": -609410116152.5167 }, "end": { "local": "1950-09-09T19:55:30+03:00", "utc": "1950-09-09T16:55:30Z", "ms": -609404669919.752 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1950-09-10", "window": { "start": { "local": "1950-09-10T18:23:16+03:00", "utc": "1950-09-10T15:23:16Z", "ms": -609323804472.9459 }, "end": { "local": "1950-09-10T19:54:20+03:00", "utc": "1950-09-10T16:54:20Z", "ms": -609318340189.5615 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:07 on Sat 9 Sep to 09:29 on Sun 10 Sep.", "fact": "1950-09-09T07:06:44Z → 1950-09-10T06:29:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:25–19:56 on the 9th, 18:23–19:54 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 91 of 91 minutes on the 9th and 0 of 91 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 29880 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Saturday 9 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": "1950-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-09", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Saturday 9 September. Trayodaśī runs from 10:07 on Sat 9 Sep to 09:29 on Sun 10 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-09-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32045, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 }, "end": { "local": "1950-09-11T08:14:42+03:00", "utc": "1950-09-11T05:14:42Z", "ms": -609273917591.4517 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 }, "end": { "local": "1950-09-11T08:14:42+03:00", "utc": "1950-09-11T05:14:42Z", "ms": -609273917591.4517 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-09-10", "window": { "start": { "local": "1950-09-10T18:23:16+03:00", "utc": "1950-09-10T15:23:16Z", "ms": -609323804472.9459 }, "end": { "local": "1950-09-10T19:54:20+03:00", "utc": "1950-09-10T16:54:20Z", "ms": -609318340189.5615 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1950-09-11", "window": { "start": { "local": "1950-09-11T18:21:47+03:00", "utc": "1950-09-11T15:21:47Z", "ms": -609237493065.0956 }, "end": { "local": "1950-09-11T19:53:09+03:00", "utc": "1950-09-11T16:53:09Z", "ms": -609232010693.5416 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:29 on Sun 10 Sep to 08:15 on Mon 11 Sep.", "fact": "1950-09-10T06:29:11Z → 1950-09-11T05:14:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:23–19:54 on the 10th, 18:22–19:53 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 91 of 91 minutes on the 10th and 0 of 91 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32045 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Mosul, 1950: Sunday 10 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": "1950-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-10", "confidence": "determinate" } ], "quote": "In Mosul, Aghora Caturdaśī 1950 falls on Sunday 10 September. Caturdaśī runs from 09:29 on Sun 10 Sep to 08:15 on Mon 11 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/shivaratri?on=1950-09-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27956, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 }, "end": { "local": "1950-09-11T08:14:42+03:00", "utc": "1950-09-11T05:14:42Z", "ms": -609273917591.4517 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-10T09:29:11+03:00", "utc": "1950-09-10T06:29:11Z", "ms": -609355849153.9779 }, "end": { "local": "1950-09-11T08:14:42+03:00", "utc": "1950-09-11T05:14:42Z", "ms": -609273917591.4517 } }, "kaala": "nishita", "days": [ { "local_date": "1950-09-09", "window": { "start": { "local": "1950-09-09T23:41:07+03:00", "utc": "1950-09-09T20:41:07Z", "ms": -609391132779.6487 }, "end": { "local": "1950-09-10T00:29:07+03:00", "utc": "1950-09-09T21:29:07Z", "ms": -609388252779.6487 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-10", "window": { "start": { "local": "1950-09-10T23:40:47+03:00", "utc": "1950-09-10T20:40:47Z", "ms": -609304753410.2545 }, "end": { "local": "1950-09-11T00:28:47+03:00", "utc": "1950-09-10T21:28:47Z", "ms": -609301873410.2545 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:29 on Sun 10 Sep to 08:15 on Mon 11 Sep.", "fact": "1950-09-10T06:29:11Z → 1950-09-11T05:14:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:41–00:29 on the 9th, 23:41–00:29 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 27956 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Sunday 10 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": "1950-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-10", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Sunday 10 September. Caturdaśī runs from 09:29 on Sun 10 Sep to 08:15 on Mon 11 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-09-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18649, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-09-12T06:28:53+03:00", "utc": "1950-09-12T03:28:53Z", "ms": -609193867416.2249 }, "end": { "local": "1950-09-13T04:18:21+03:00", "utc": "1950-09-13T01:18:21Z", "ms": -609115299457.0848 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-12T06:28:53+03:00", "utc": "1950-09-12T03:28:53Z", "ms": -609193867416.2249 }, "end": { "local": "1950-09-13T04:18:21+03:00", "utc": "1950-09-13T01:18:21Z", "ms": -609115299457.0848 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-12", "window": { "start": { "local": "1950-09-12T11:39:41+03:00", "utc": "1950-09-12T08:39:41Z", "ms": -609175218590.6836 }, "end": { "local": "1950-09-12T12:27:41+03:00", "utc": "1950-09-12T09:27:41Z", "ms": -609172338590.6836 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-09-13", "window": { "start": { "local": "1950-09-13T11:39:20+03:00", "utc": "1950-09-13T08:39:20Z", "ms": -609088839577.7954 }, "end": { "local": "1950-09-13T12:27:20+03:00", "utc": "1950-09-13T09:27:20Z", "ms": -609085959577.7954 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:29 on Tue 12 Sep to 04:18 on Wed 13 Sep.", "fact": "1950-09-12T03:28:53Z → 1950-09-13T01:18:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 12th, 11:39–12:27 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18649 s" }, { "step": "ruling", "text": "Rudra Vrata, Mosul, 1950: Tuesday 12 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": "1950-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-12", "confidence": "determinate" } ], "quote": "In Mosul, Rudra Vrata 1950 falls on Tuesday 12 September. Pratipadā runs from 06:29 on Tue 12 Sep to 04:18 on Wed 13 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35327, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1950-09-14T01:50:13+03:00", "utc": "1950-09-13T22:50:13Z", "ms": -609037787187.5071 }, "end": { "local": "1950-09-14T23:11:35+03:00", "utc": "1950-09-14T20:11:35Z", "ms": -608960904724.9236 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-14T01:50:13+03:00", "utc": "1950-09-13T22:50:13Z", "ms": -609037787187.5071 }, "end": { "local": "1950-09-14T23:11:35+03:00", "utc": "1950-09-14T20:11:35Z", "ms": -608960904724.9236 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-14", "window": { "start": { "local": "1950-09-14T11:38:59+03:00", "utc": "1950-09-14T08:38:59Z", "ms": -609002460652.5038 }, "end": { "local": "1950-09-14T12:26:59+03:00", "utc": "1950-09-14T09:26:59Z", "ms": -608999580652.5038 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-09-15", "window": { "start": { "local": "1950-09-15T11:38:38+03:00", "utc": "1950-09-15T08:38:38Z", "ms": -608916081799.311 }, "end": { "local": "1950-09-15T12:26:38+03:00", "utc": "1950-09-15T09:26:38Z", "ms": -608913201799.311 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 01:50 on Thu 14 Sep to 23:12 on Thu 14 Sep.", "fact": "1950-09-13T22:50:13Z → 1950-09-14T20:11:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 14th, 11:39–12:27 on the 15th.", "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 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35327 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Mosul, 1950: Thursday 14 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": "1950-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-14", "confidence": "determinate" } ], "quote": "In Mosul, Haritālikā Vrata (Hartalika Teej) 1950 falls on Thursday 14 September. Tṛtīyā runs from 01:50 on Thu 14 Sep to 23:12 on Thu 14 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28955, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-09-14T23:11:35+03:00", "utc": "1950-09-14T20:11:35Z", "ms": -608960904724.9236 }, "end": { "local": "1950-09-15T20:29:13+03:00", "utc": "1950-09-15T17:29:13Z", "ms": -608884246722.6763 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-14T23:11:35+03:00", "utc": "1950-09-14T20:11:35Z", "ms": -608960904724.9236 }, "end": { "local": "1950-09-15T20:29:13+03:00", "utc": "1950-09-15T17:29:13Z", "ms": -608884246722.6763 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-14", "window": { "start": { "local": "1950-09-14T11:38:59+03:00", "utc": "1950-09-14T08:38:59Z", "ms": -609002460652.5038 }, "end": { "local": "1950-09-14T12:26:59+03:00", "utc": "1950-09-14T09:26:59Z", "ms": -608999580652.5038 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-15", "window": { "start": { "local": "1950-09-15T11:38:38+03:00", "utc": "1950-09-15T08:38:38Z", "ms": -608916081799.311 }, "end": { "local": "1950-09-15T12:26:38+03:00", "utc": "1950-09-15T09:26:38Z", "ms": -608913201799.311 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:12 on Thu 14 Sep to 20:29 on Fri 15 Sep.", "fact": "1950-09-14T20:11:35Z → 1950-09-15T17:29:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 14th, 11:39–12:27 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28955 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Mosul, 1950: Friday 15 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": "1950-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-15", "confidence": "determinate" } ], "quote": "In Mosul, Gaṇeśa Caturthī 1950 falls on Friday 15 September. Caturthī runs from 23:12 on Thu 14 Sep to 20:29 on Fri 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19381, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-09-15T20:29:13+03:00", "utc": "1950-09-15T17:29:13Z", "ms": -608884246722.6763 }, "end": { "local": "1950-09-16T17:49:18+03:00", "utc": "1950-09-16T14:49:18Z", "ms": -608807442192.0632 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-15T20:29:13+03:00", "utc": "1950-09-15T17:29:13Z", "ms": -608884246722.6763 }, "end": { "local": "1950-09-16T17:49:18+03:00", "utc": "1950-09-16T14:49:18Z", "ms": -608807442192.0632 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-15", "window": { "start": { "local": "1950-09-15T11:38:38+03:00", "utc": "1950-09-15T08:38:38Z", "ms": -608916081799.311 }, "end": { "local": "1950-09-15T12:26:38+03:00", "utc": "1950-09-15T09:26:38Z", "ms": -608913201799.311 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-16", "window": { "start": { "local": "1950-09-16T11:38:17+03:00", "utc": "1950-09-16T08:38:17Z", "ms": -608829703002.0266 }, "end": { "local": "1950-09-16T12:26:17+03:00", "utc": "1950-09-16T09:26:17Z", "ms": -608826823002.0266 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:29 on Fri 15 Sep to 17:49 on Sat 16 Sep.", "fact": "1950-09-15T17:29:13Z → 1950-09-16T14:49:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 15th, 11:38–12:26 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 19381 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Mosul, 1950: Saturday 16 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": "1950-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-16", "confidence": "determinate" } ], "quote": "In Mosul, Ṛṣi Pañcamī 1950 falls on Saturday 16 September. Pañcamī runs from 20:29 on Fri 15 Sep to 17:49 on Sat 16 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10281, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-09-16T17:49:18+03:00", "utc": "1950-09-16T14:49:18Z", "ms": -608807442192.0632 }, "end": { "local": "1950-09-17T15:17:16+03:00", "utc": "1950-09-17T12:17:16Z", "ms": -608730163671.8732 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-16T17:49:18+03:00", "utc": "1950-09-16T14:49:18Z", "ms": -608807442192.0632 }, "end": { "local": "1950-09-17T15:17:16+03:00", "utc": "1950-09-17T12:17:16Z", "ms": -608730163671.8732 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-16", "window": { "start": { "local": "1950-09-16T11:38:17+03:00", "utc": "1950-09-16T08:38:17Z", "ms": -608829703002.0266 }, "end": { "local": "1950-09-16T12:26:17+03:00", "utc": "1950-09-16T09:26:17Z", "ms": -608826823002.0266 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-17", "window": { "start": { "local": "1950-09-17T11:37:56+03:00", "utc": "1950-09-17T08:37:56Z", "ms": -608743324243.5583 }, "end": { "local": "1950-09-17T12:25:56+03:00", "utc": "1950-09-17T09:25:56Z", "ms": -608740444243.5583 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:49 on Sat 16 Sep to 15:17 on Sun 17 Sep.", "fact": "1950-09-16T14:49:18Z → 1950-09-17T12:17:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 16th, 11:38–12:26 on the 17th.", "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 16th and 48 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: paraviddha → only-day · margin 10281 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Mosul, 1950: Sunday 17 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": "1950-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-17", "confidence": "determinate" } ], "quote": "In Mosul, Sūrya Ṣaṣṭhī (Bhādrapada) 1950 falls on Sunday 17 September. Ṣaṣṭhī runs from 17:49 on Sat 16 Sep to 15:17 on Sun 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1933, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-09-17T15:17:16+03:00", "utc": "1950-09-17T12:17:16Z", "ms": -608730163671.8732 }, "end": { "local": "1950-09-18T12:57:48+03:00", "utc": "1950-09-18T09:57:48Z", "ms": -608652132329.9448 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-17T15:17:16+03:00", "utc": "1950-09-17T12:17:16Z", "ms": -608730163671.8732 }, "end": { "local": "1950-09-18T12:57:48+03:00", "utc": "1950-09-18T09:57:48Z", "ms": -608652132329.9448 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-17", "window": { "start": { "local": "1950-09-17T11:37:56+03:00", "utc": "1950-09-17T08:37:56Z", "ms": -608743324243.5583 }, "end": { "local": "1950-09-17T12:25:56+03:00", "utc": "1950-09-17T09:25:56Z", "ms": -608740444243.5583 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-18", "window": { "start": { "local": "1950-09-18T11:37:34+03:00", "utc": "1950-09-18T08:37:34Z", "ms": -608656945505.7734 }, "end": { "local": "1950-09-18T12:25:34+03:00", "utc": "1950-09-18T09:25:34Z", "ms": -608654065505.7734 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 15:17 on Sun 17 Sep to 12:58 on Mon 18 Sep.", "fact": "1950-09-17T12:17:16Z → 1950-09-18T09:57:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 17th, 11:38–12:26 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 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 1933 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Mosul, 1950: Monday 18 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": "1950-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-18", "confidence": "determinate" } ], "quote": "In Mosul, Muktābharaṇa Vrata 1950 falls on Monday 18 September. Saptamī runs from 15:17 on Sun 17 Sep to 12:58 on Mon 18 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1933, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-09-18T12:57:48+03:00", "utc": "1950-09-18T09:57:48Z", "ms": -608652132329.9448 }, "end": { "local": "1950-09-19T10:54:41+03:00", "utc": "1950-09-19T07:54:41Z", "ms": -608573118975.9983 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-18T12:57:48+03:00", "utc": "1950-09-18T09:57:48Z", "ms": -608652132329.9448 }, "end": { "local": "1950-09-19T10:54:41+03:00", "utc": "1950-09-19T07:54:41Z", "ms": -608573118975.9983 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-18", "window": { "start": { "local": "1950-09-18T11:37:34+03:00", "utc": "1950-09-18T08:37:34Z", "ms": -608656945505.7734 }, "end": { "local": "1950-09-18T12:25:34+03:00", "utc": "1950-09-18T09:25:34Z", "ms": -608654065505.7734 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-09-19", "window": { "start": { "local": "1950-09-19T11:37:13+03:00", "utc": "1950-09-19T08:37:13Z", "ms": -608570566769.4563 }, "end": { "local": "1950-09-19T12:25:13+03:00", "utc": "1950-09-19T09:25:13Z", "ms": -608567686769.4563 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:58 on Mon 18 Sep to 10:55 on Tue 19 Sep.", "fact": "1950-09-18T09:57:48Z → 1950-09-19T07:54:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 18th, 11:37–12:25 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 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 1933 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Mosul, 1950: Tuesday 19 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": "1950-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-18", "confidence": "boundary" } ], "quote": "In Mosul, Rādhāṣṭamī 1950 falls on Tuesday 19 September. Aṣṭamī runs from 12:58 on Mon 18 Sep to 10:55 on Tue 19 Sep, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-09-22", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3355, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-09-21T07:49:05+03:00", "utc": "1950-09-21T04:49:05Z", "ms": -608411454772.224 }, "end": { "local": "1950-09-22T06:50:52+03:00", "utc": "1950-09-22T03:50:52Z", "ms": -608328547568.1819 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-21T07:49:05+03:00", "utc": "1950-09-21T04:49:05Z", "ms": -608411454772.224 }, "end": { "local": "1950-09-22T06:50:52+03:00", "utc": "1950-09-22T03:50:52Z", "ms": -608328547568.1819 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-09-21", "window": { "start": { "local": "1950-09-21T05:54:10+03:00", "utc": "1950-09-21T02:54:10Z", "ms": -608418350307.3314 }, "end": { "local": "1950-09-21T05:54:10+03:00", "utc": "1950-09-21T02:54:10Z", "ms": -608418350307.3314 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-09-22", "window": { "start": { "local": "1950-09-22T05:54:57+03:00", "utc": "1950-09-22T02:54:57Z", "ms": -608331902786.0643 }, "end": { "local": "1950-09-22T05:54:57+03:00", "utc": "1950-09-22T02:54:57Z", "ms": -608331902786.0643 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:49 on Thu 21 Sep to 06:51 on Fri 22 Sep.", "fact": "1950-09-21T04:49:05Z → 1950-09-22T03:50:52Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 21st and 05:55 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 3355 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Mosul, 1950: Friday 22 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": "1950-09-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-22", "confidence": "determinate" } ], "quote": "In Mosul, Parivartanī Ekādaśī 1950 falls on Friday 22 September. Ekādaśī runs from 07:49 on Thu 21 Sep to 06:51 on Fri 22 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-09-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17117, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-09-22T06:50:52+03:00", "utc": "1950-09-22T03:50:52Z", "ms": -608328547568.1819 }, "end": { "local": "1950-09-23T06:17:53+03:00", "utc": "1950-09-23T03:17:53Z", "ms": -608244127164.7861 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-22T06:50:52+03:00", "utc": "1950-09-22T03:50:52Z", "ms": -608328547568.1819 }, "end": { "local": "1950-09-23T06:17:53+03:00", "utc": "1950-09-23T03:17:53Z", "ms": -608244127164.7861 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-09-22", "window": { "start": { "local": "1950-09-22T11:36:10+03:00", "utc": "1950-09-22T08:36:10Z", "ms": -608311430361.8176 }, "end": { "local": "1950-09-22T12:24:10+03:00", "utc": "1950-09-22T09:24:10Z", "ms": -608308550361.8176 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-09-23", "window": { "start": { "local": "1950-09-23T11:35:49+03:00", "utc": "1950-09-23T08:35:49Z", "ms": -608225051419.5332 }, "end": { "local": "1950-09-23T12:23:49+03:00", "utc": "1950-09-23T09:23:49Z", "ms": -608222171419.5332 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:51 on Fri 22 Sep to 06:18 on Sat 23 Sep.", "fact": "1950-09-22T03:50:52Z → 1950-09-23T03:17:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 22nd, 11:36–12:24 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 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17117 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Mosul, 1950: Friday 22 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": "1950-09-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-22", "confidence": "determinate" } ], "quote": "In Mosul, Vāmana Jayantī 1950 falls on Friday 22 September. Dvādaśī runs from 06:51 on Fri 22 Sep to 06:18 on Sat 23 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-09-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37949, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-09-23T06:17:53+03:00", "utc": "1950-09-23T03:17:53Z", "ms": -608244127164.7861 }, "end": { "local": "1950-09-24T06:11:23+03:00", "utc": "1950-09-24T03:11:23Z", "ms": -608158116841.4119 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-23T06:17:53+03:00", "utc": "1950-09-23T03:17:53Z", "ms": -608244127164.7861 }, "end": { "local": "1950-09-24T06:11:23+03:00", "utc": "1950-09-24T03:11:23Z", "ms": -608158116841.4119 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-09-22", "window": { "start": { "local": "1950-09-22T18:05:22+03:00", "utc": "1950-09-22T15:05:22Z", "ms": -608288077937.5708 }, "end": { "local": "1950-09-22T19:40:05+03:00", "utc": "1950-09-22T16:40:05Z", "ms": -608282394900.4407 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1950-09-23", "window": { "start": { "local": "1950-09-23T18:03:52+03:00", "utc": "1950-09-23T15:03:52Z", "ms": -608201767679.9713 }, "end": { "local": "1950-09-23T19:38:54+03:00", "utc": "1950-09-23T16:38:54Z", "ms": -608196066310.6896 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:18 on Sat 23 Sep to 06:11 on Sun 24 Sep.", "fact": "1950-09-23T03:17:53Z → 1950-09-24T03:11:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:05–19:40 on the 22nd, 18:04–19:39 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 95 minutes on the 22nd and 95 of 95 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 37949 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Saturday 23 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": "1950-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-23", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Saturday 23 September. Trayodaśī runs from 06:18 on Sat 23 Sep to 06:11 on Sun 24 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-09-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-24", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 891, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-09-24T06:11:23+03:00", "utc": "1950-09-24T03:11:23Z", "ms": -608158116841.4119 }, "end": { "local": "1950-09-25T06:32:23+03:00", "utc": "1950-09-25T03:32:23Z", "ms": -608070456596.1201 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1950-09-24T06:11:23+03:00", "utc": "1950-09-24T03:11:23Z", "ms": -608158116841.4119 }, "end": { "local": "1950-09-25T06:32:23+03:00", "utc": "1950-09-25T03:32:23Z", "ms": -608070456596.1201 } }, "kaala": "udaya-3", "days": [ { "local_date": "1950-09-24", "window": { "start": { "local": "1950-09-24T05:56:33+03:00", "utc": "1950-09-24T02:56:33Z", "ms": -608159007410.3582 }, "end": { "local": "1950-09-24T08:21:43+03:00", "utc": "1950-09-24T05:21:43Z", "ms": -608150297393.8104 } }, "covered_min": 130, "window_min": 145, "qualifies": false }, { "local_date": "1950-09-25", "window": { "start": { "local": "1950-09-25T05:57:20+03:00", "utc": "1950-09-25T02:57:20Z", "ms": -608072559523.1749 }, "end": { "local": "1950-09-25T08:22:03+03:00", "utc": "1950-09-25T05:22:03Z", "ms": -608063876988.5211 } }, "covered_min": 35, "window_min": 145, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:11 on Sun 24 Sep to 06:32 on Mon 25 Sep.", "fact": "1950-09-24T03:11:23Z → 1950-09-25T03:32:23Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:57–08:22 on the 24th, 05:57–08:22 on the 25th.", "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 130 of 145 minutes on the 24th and 35 of 145 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 891 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Mosul, 1950: Sunday 24 September.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-09-24", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-24", "confidence": "boundary" } ], "quote": "In Mosul, Ananta Caturdaśī 1950 falls on Sunday 24 September. Caturdaśī runs from 06:11 on Sun 24 Sep to 06:32 on Mon 25 Sep, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-09-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18299, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-09-29T12:26:30+03:00", "utc": "1950-09-29T09:26:30Z", "ms": -607703610011.4792 }, "end": { "local": "1950-09-30T14:48:23+03:00", "utc": "1950-09-30T11:48:23Z", "ms": -607608696849.2489 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-09-29T12:26:30+03:00", "utc": "1950-09-29T09:26:30Z", "ms": -607703610011.4792 }, "end": { "local": "1950-09-30T14:48:23+03:00", "utc": "1950-09-30T11:48:23Z", "ms": -607608696849.2489 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-09-29", "window": { "start": { "local": "1950-09-29T19:21:42+03:00", "utc": "1950-09-29T16:21:42Z", "ms": -607678697560.8618 }, "end": { "local": "1950-09-29T19:21:42+03:00", "utc": "1950-09-29T16:21:42Z", "ms": -607678697560.8618 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-09-30", "window": { "start": { "local": "1950-09-30T19:53:22+03:00", "utc": "1950-09-30T16:53:22Z", "ms": -607590397846.1775 }, "end": { "local": "1950-09-30T19:53:22+03:00", "utc": "1950-09-30T16:53:22Z", "ms": -607590397846.1775 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:26 on Fri 29 Sep to 14:48 on Sat 30 Sep.", "fact": "1950-09-29T09:26:30Z → 1950-09-30T11:48:23Z" }, { "step": "kaala", "text": "Moonrise is at 19:22 on the 29th and 19:53 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18299 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Friday 29 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": "1950-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-09-29", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Friday 29 September. Caturthī runs from 12:26 on Fri 29 Sep to 14:48 on Sat 30 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-09-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5395, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-10-01T17:18:07+03:00", "utc": "1950-10-01T14:18:07Z", "ms": -607513313013.7407 }, "end": { "local": "1950-10-02T19:44:49+03:00", "utc": "1950-10-02T16:44:49Z", "ms": -607418111139.6687 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-01T17:18:07+03:00", "utc": "1950-10-01T14:18:07Z", "ms": -607513313013.7407 }, "end": { "local": "1950-10-02T19:44:49+03:00", "utc": "1950-10-02T16:44:49Z", "ms": -607418111139.6687 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-10-01", "window": { "start": { "local": "1950-10-01T20:30:39+03:00", "utc": "1950-10-01T17:30:39Z", "ms": -607501760873.0073 }, "end": { "local": "1950-10-01T20:30:39+03:00", "utc": "1950-10-01T17:30:39Z", "ms": -607501760873.0073 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-10-02", "window": { "start": { "local": "1950-10-02T21:14:44+03:00", "utc": "1950-10-02T18:14:44Z", "ms": -607412715906.2668 }, "end": { "local": "1950-10-02T21:14:44+03:00", "utc": "1950-10-02T18:14:44Z", "ms": -607412715906.2668 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:18 on Sun 1 Oct to 19:45 on Mon 2 Oct.", "fact": "1950-10-01T14:18:07Z → 1950-10-02T16:44:49Z" }, { "step": "kaala", "text": "Moonrise is at 20:31 on the 1st and 21:15 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5395 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Mosul, 1950: Sunday 1 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-01", "confidence": "determinate" } ], "quote": "In Mosul, Candra Ṣaṣṭhī 1950 falls on Sunday 1 October. Ṣaṣṭhī runs from 17:18 on Sun 1 Oct to 19:45 on Mon 2 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-03", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 582, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-10-03T21:56:23+03:00", "utc": "1950-10-03T18:56:23Z", "ms": -607323816849.1019 }, "end": { "local": "1950-10-04T23:41:02+03:00", "utc": "1950-10-04T20:41:02Z", "ms": -607231138204.5586 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-03T21:56:23+03:00", "utc": "1950-10-03T18:56:23Z", "ms": -607323816849.1019 }, "end": { "local": "1950-10-04T23:41:02+03:00", "utc": "1950-10-04T20:41:02Z", "ms": -607231138204.5586 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-10-03", "window": { "start": { "local": "1950-10-03T22:06:05+03:00", "utc": "1950-10-03T19:06:05Z", "ms": -607323234856.4364 }, "end": { "local": "1950-10-03T22:06:05+03:00", "utc": "1950-10-03T19:06:05Z", "ms": -607323234856.4364 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-10-04", "window": { "start": { "local": "1950-10-04T23:04:03+03:00", "utc": "1950-10-04T20:04:03Z", "ms": -607233356859.9178 }, "end": { "local": "1950-10-04T23:04:03+03:00", "utc": "1950-10-04T20:04:03Z", "ms": -607233356859.9178 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:56 on Tue 3 Oct to 23:41 on Wed 4 Oct.", "fact": "1950-10-03T18:56:23Z → 1950-10-04T20:41:02Z" }, { "step": "kaala", "text": "Moonrise is at 22:06 on the 3rd and 23:04 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both moonrises qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 582 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Mosul, 1950: Tuesday 3 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1950-10-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-03", "confidence": "boundary" } ], "quote": "In Mosul, Mahālakṣmī Vrata Samāpana 1950 falls on Tuesday 3 October. Aṣṭamī runs from 21:56 on Tue 3 Oct to 23:41 on Wed 4 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8953, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-10-03T21:56:23+03:00", "utc": "1950-10-03T18:56:23Z", "ms": -607323816849.1019 }, "end": { "local": "1950-10-04T23:41:02+03:00", "utc": "1950-10-04T20:41:02Z", "ms": -607231138204.5586 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-03T21:56:23+03:00", "utc": "1950-10-03T18:56:23Z", "ms": -607323816849.1019 }, "end": { "local": "1950-10-04T23:41:02+03:00", "utc": "1950-10-04T20:41:02Z", "ms": -607231138204.5586 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-10-03", "window": { "start": { "local": "1950-10-03T17:49:05+03:00", "utc": "1950-10-03T14:49:05Z", "ms": -607338654830.4927 }, "end": { "local": "1950-10-03T19:27:10+03:00", "utc": "1950-10-03T16:27:10Z", "ms": -607332770138.2734 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1950-10-04", "window": { "start": { "local": "1950-10-04T17:47:38+03:00", "utc": "1950-10-04T14:47:38Z", "ms": -607252341841.8579 }, "end": { "local": "1950-10-04T19:26:01+03:00", "utc": "1950-10-04T16:26:01Z", "ms": -607246438864.5394 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:56 on Tue 3 Oct to 23:41 on Wed 4 Oct.", "fact": "1950-10-03T18:56:23Z → 1950-10-04T20:41:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:49–19:27 on the 3rd, 17:48–19:26 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 98 minutes on the 3rd and 98 of 98 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 8953 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Mosul, 1950: Wednesday 4 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-04", "confidence": "determinate" } ], "quote": "In Mosul, Jitāṣṭamī (Jitiya) 1950 falls on Wednesday 4 October. Aṣṭamī runs from 21:56 on Tue 3 Oct to 23:41 on Wed 4 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-10-07", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17646, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-10-07T01:13:06+03:00", "utc": "1950-10-06T22:13:06Z", "ms": -607052814103.1982 }, "end": { "local": "1950-10-08T00:50:48+03:00", "utc": "1950-10-07T21:50:48Z", "ms": -606967751823.1017 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-07T01:13:06+03:00", "utc": "1950-10-06T22:13:06Z", "ms": -607052814103.1982 }, "end": { "local": "1950-10-08T00:50:48+03:00", "utc": "1950-10-07T21:50:48Z", "ms": -606967751823.1017 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-10-07", "window": { "start": { "local": "1950-10-07T06:07:12+03:00", "utc": "1950-10-07T03:07:12Z", "ms": -607035168369.1473 }, "end": { "local": "1950-10-07T06:07:12+03:00", "utc": "1950-10-07T03:07:12Z", "ms": -607035168369.1473 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-10-08", "window": { "start": { "local": "1950-10-08T06:08:03+03:00", "utc": "1950-10-08T03:08:03Z", "ms": -606948717336.8695 }, "end": { "local": "1950-10-08T06:08:03+03:00", "utc": "1950-10-08T03:08:03Z", "ms": -606948717336.8695 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:13 on Sat 7 Oct to 00:51 on Sun 8 Oct.", "fact": "1950-10-06T22:13:06Z → 1950-10-07T21:50:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:07 on the 7th and 06:08 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17646 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Mosul, 1950: Saturday 7 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": "1950-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-07", "confidence": "determinate" } ], "quote": "In Mosul, Indirā Ekādaśī 1950 falls on Saturday 7 October. Ekādaśī runs from 01:13 on Sat 7 Oct to 00:51 on Sun 8 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-10-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9133, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-10-08T23:42:41+03:00", "utc": "1950-10-08T20:42:41Z", "ms": -606885438947.0228 }, "end": { "local": "1950-10-09T21:52:38+03:00", "utc": "1950-10-09T18:52:38Z", "ms": -606805642276.6489 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-08T23:42:41+03:00", "utc": "1950-10-08T20:42:41Z", "ms": -606885438947.0228 }, "end": { "local": "1950-10-09T21:52:38+03:00", "utc": "1950-10-09T18:52:38Z", "ms": -606805642276.6489 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-10-08", "window": { "start": { "local": "1950-10-08T17:41:55+03:00", "utc": "1950-10-08T14:41:55Z", "ms": -606907085253.8923 }, "end": { "local": "1950-10-08T19:21:31+03:00", "utc": "1950-10-08T16:21:31Z", "ms": -606901109351.868 } }, "covered_min": 0, "window_min": 100, "qualifies": false }, { "local_date": "1950-10-09", "window": { "start": { "local": "1950-10-09T17:40:30+03:00", "utc": "1950-10-09T14:40:30Z", "ms": -606820769797.5432 }, "end": { "local": "1950-10-09T19:20:24+03:00", "utc": "1950-10-09T16:20:24Z", "ms": -606814775733.871 } }, "covered_min": 100, "window_min": 100, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:43 on Sun 8 Oct to 21:53 on Mon 9 Oct.", "fact": "1950-10-08T20:42:41Z → 1950-10-09T18:52:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:42–19:22 on the 8th, 17:41–19:20 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 100 minutes on the 8th and 100 of 100 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 9133 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Monday 9 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": "1950-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-09", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Monday 9 October. Trayodaśī runs from 23:43 on Sun 8 Oct to 21:53 on Mon 9 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-10-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-10-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5910, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-10-09T21:52:38+03:00", "utc": "1950-10-09T18:52:38Z", "ms": -606805642276.6489 }, "end": { "local": "1950-10-10T19:26:56+03:00", "utc": "1950-10-10T16:26:56Z", "ms": -606727983713.1104 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-09T21:52:38+03:00", "utc": "1950-10-09T18:52:38Z", "ms": -606805642276.6489 }, "end": { "local": "1950-10-10T19:26:56+03:00", "utc": "1950-10-10T16:26:56Z", "ms": -606727983713.1104 } }, "kaala": "nishita", "days": [ { "local_date": "1950-10-09", "window": { "start": { "local": "1950-10-09T23:31:08+03:00", "utc": "1950-10-09T20:31:08Z", "ms": -606799732058.7725 }, "end": { "local": "1950-10-10T00:19:08+03:00", "utc": "1950-10-09T21:19:08Z", "ms": -606796852058.7725 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-10-10", "window": { "start": { "local": "1950-10-10T23:30:52+03:00", "utc": "1950-10-10T20:30:52Z", "ms": -606713348043.1172 }, "end": { "local": "1950-10-11T00:18:52+03:00", "utc": "1950-10-10T21:18:52Z", "ms": -606710468043.1172 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:53 on Mon 9 Oct to 19:27 on Tue 10 Oct.", "fact": "1950-10-09T18:52:38Z → 1950-10-10T16:26:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:31–00:19 on the 9th, 23:31–00:19 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 5910 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Monday 9 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": "1950-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-09", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Monday 9 October. Caturdaśī runs from 21:53 on Mon 9 Oct to 19:27 on Tue 10 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-10-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4397, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1950-10-10T19:26:56+03:00", "utc": "1950-10-10T16:26:56Z", "ms": -606727983713.1104 }, "end": { "local": "1950-10-11T16:33:34+03:00", "utc": "1950-10-11T13:33:34Z", "ms": -606651985639.1329 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-10T19:26:56+03:00", "utc": "1950-10-10T16:26:56Z", "ms": -606727983713.1104 }, "end": { "local": "1950-10-11T16:33:34+03:00", "utc": "1950-10-11T13:33:34Z", "ms": -606651985639.1329 } }, "kaala": "aparahna", "days": [ { "local_date": "1950-10-10", "window": { "start": { "local": "1950-10-10T13:03:22+03:00", "utc": "1950-10-10T10:03:22Z", "ms": -606750997983.226 }, "end": { "local": "1950-10-10T15:21:14+03:00", "utc": "1950-10-10T12:21:14Z", "ms": -606742725870.9674 } }, "covered_min": 0, "window_min": 138, "qualifies": false }, { "local_date": "1950-10-11", "window": { "start": { "local": "1950-10-11T13:02:53+03:00", "utc": "1950-10-11T10:02:53Z", "ms": -606664627196.5154 }, "end": { "local": "1950-10-11T15:20:18+03:00", "utc": "1950-10-11T12:20:18Z", "ms": -606656382152.8453 } }, "covered_min": 137, "window_min": 137, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 19:27 on Tue 10 Oct to 16:34 on Wed 11 Oct.", "fact": "1950-10-10T16:26:56Z → 1950-10-11T13:33:34Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:03–15:21 on the 10th, 13:03–15:20 on the 11th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 138 minutes on the 10th and 137 of 137 on the 11th.", "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 4397 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Mosul, 1950: Wednesday 11 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": "1950-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-11", "confidence": "determinate" } ], "quote": "In Mosul, Mahālaya Amāvāsyā 1950 falls on Wednesday 11 October. Amāvasyā runs from 19:27 on Tue 10 Oct to 16:34 on Wed 11 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3815, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-10-11T16:33:34+03:00", "utc": "1950-10-11T13:33:34Z", "ms": -606651985639.1329 }, "end": { "local": "1950-10-12T13:21:30+03:00", "utc": "1950-10-12T10:21:30Z", "ms": -606577110276.8867 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-11T16:33:34+03:00", "utc": "1950-10-11T13:33:34Z", "ms": -606651985639.1329 }, "end": { "local": "1950-10-12T13:21:30+03:00", "utc": "1950-10-12T10:21:30Z", "ms": -606577110276.8867 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-10-11", "window": { "start": { "local": "1950-10-11T11:30:10+03:00", "utc": "1950-10-11T08:30:10Z", "ms": -606670189718.3505 }, "end": { "local": "1950-10-11T12:18:10+03:00", "utc": "1950-10-11T09:18:10Z", "ms": -606667309718.3505 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-10-12", "window": { "start": { "local": "1950-10-12T11:29:55+03:00", "utc": "1950-10-12T08:29:55Z", "ms": -606583804915.3384 }, "end": { "local": "1950-10-12T12:17:55+03:00", "utc": "1950-10-12T09:17:55Z", "ms": -606580924915.3384 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:34 on Wed 11 Oct to 13:21 on Thu 12 Oct.", "fact": "1950-10-11T13:33:34Z → 1950-10-12T10:21:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 11th, 11:30–12:18 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3815 s" }, { "step": "ruling", "text": "Navarātrārambha, Mosul, 1950: Thursday 12 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": "1950-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-12", "confidence": "determinate" } ], "quote": "In Mosul, Navarātrārambha (Navratri) 1950 falls on Thursday 12 October. Pratipadā runs from 16:34 on Wed 11 Oct to 13:21 on Thu 12 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-10-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17428, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-10-14T06:38:58+03:00", "utc": "1950-10-14T03:38:58Z", "ms": -606428462009.0378 }, "end": { "local": "1950-10-15T03:27:05+03:00", "utc": "1950-10-15T00:27:05Z", "ms": -606353575090.586 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-14T06:38:58+03:00", "utc": "1950-10-14T03:38:58Z", "ms": -606428462009.0378 }, "end": { "local": "1950-10-15T03:27:05+03:00", "utc": "1950-10-15T00:27:05Z", "ms": -606353575090.586 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-10-14", "window": { "start": { "local": "1950-10-14T11:29:26+03:00", "utc": "1950-10-14T08:29:26Z", "ms": -606411033807.0078 }, "end": { "local": "1950-10-14T12:17:26+03:00", "utc": "1950-10-14T09:17:26Z", "ms": -606408153807.0078 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-10-15", "window": { "start": { "local": "1950-10-15T11:29:13+03:00", "utc": "1950-10-15T08:29:13Z", "ms": -606324647473.6786 }, "end": { "local": "1950-10-15T12:17:13+03:00", "utc": "1950-10-15T09:17:13Z", "ms": -606321767473.6786 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:39 on Sat 14 Oct to 03:27 on Sun 15 Oct.", "fact": "1950-10-14T03:38:58Z → 1950-10-15T00:27:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 14th, 11:29–12:17 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 17428 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Saturday 14 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": "1950-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-14", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Saturday 14 October. Caturthī runs from 06:39 on Sat 14 Oct to 03:27 on Sun 15 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29549, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-10-16T22:03:27+03:00", "utc": "1950-10-16T19:03:27Z", "ms": -606200192890.4857 }, "end": { "local": "1950-10-17T20:04:34+03:00", "utc": "1950-10-17T17:04:34Z", "ms": -606120925645.3373 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-16T22:03:27+03:00", "utc": "1950-10-16T19:03:27Z", "ms": -606200192890.4857 }, "end": { "local": "1950-10-17T20:04:34+03:00", "utc": "1950-10-17T17:04:34Z", "ms": -606120925645.3373 } }, "kaala": "udaya-1", "days": [ { "local_date": "1950-10-17", "window": { "start": { "local": "1950-10-17T06:15:56+03:00", "utc": "1950-10-17T03:15:56Z", "ms": -606170643529.3053 }, "end": { "local": "1950-10-17T07:00:51+03:00", "utc": "1950-10-17T04:00:51Z", "ms": -606167948815.4067 } }, "covered_min": 45, "window_min": 45, "qualifies": true }, { "local_date": "1950-10-18", "window": { "start": { "local": "1950-10-18T06:16:51+03:00", "utc": "1950-10-18T03:16:51Z", "ms": -606084189255.6149 }, "end": { "local": "1950-10-18T07:01:37+03:00", "utc": "1950-10-18T04:01:37Z", "ms": -606081503378.6028 } }, "covered_min": 0, "window_min": 45, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:03 on Mon 16 Oct to 20:05 on Tue 17 Oct.", "fact": "1950-10-16T19:03:27Z → 1950-10-17T17:04:34Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:16–07:01 on the 17th, 06:17–07:02 on the 18th.", "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 45 of 45 minutes on the 17th and 0 of 45 on the 18th.", "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 29549 s" }, { "step": "ruling", "text": "Durgā Saptamī, Mosul, 1950: Tuesday 17 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": "1950-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-17", "confidence": "determinate" } ], "quote": "In Mosul, Durgā Saptamī 1950 falls on Tuesday 17 October. Saptamī runs from 22:03 on Mon 16 Oct to 20:05 on Tue 17 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23003, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-10-17T20:04:34+03:00", "utc": "1950-10-17T17:04:34Z", "ms": -606120925645.3373 }, "end": { "local": "1950-10-18T18:39:58+03:00", "utc": "1950-10-18T15:39:58Z", "ms": -606039601718.5144 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-17T20:04:34+03:00", "utc": "1950-10-17T17:04:34Z", "ms": -606120925645.3373 }, "end": { "local": "1950-10-18T18:39:58+03:00", "utc": "1950-10-18T15:39:58Z", "ms": -606039601718.5144 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-10-17", "window": { "start": { "local": "1950-10-17T11:28:47+03:00", "utc": "1950-10-17T08:28:47Z", "ms": -606151873175.0659 }, "end": { "local": "1950-10-17T12:16:47+03:00", "utc": "1950-10-17T09:16:47Z", "ms": -606148993175.0659 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-10-18", "window": { "start": { "local": "1950-10-18T11:28:35+03:00", "utc": "1950-10-18T08:28:35Z", "ms": -606065485178.0238 }, "end": { "local": "1950-10-18T12:16:35+03:00", "utc": "1950-10-18T09:16:35Z", "ms": -606062605178.0238 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:05 on Tue 17 Oct to 18:40 on Wed 18 Oct.", "fact": "1950-10-17T17:04:34Z → 1950-10-18T15:39:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 17th, 11:29–12:17 on the 18th.", "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 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23003 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Mosul, 1950: Wednesday 18 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": "1950-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-18", "confidence": "determinate" } ], "quote": "In Mosul, Mahāṣṭamī (Durga Ashtami) 1950 falls on Wednesday 18 October. Aṣṭamī runs from 20:05 on Tue 17 Oct to 18:40 on Wed 18 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20097, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1950-10-18T18:39:58+03:00", "utc": "1950-10-18T15:39:58Z", "ms": -606039601718.5144 }, "end": { "local": "1950-10-19T17:51:20+03:00", "utc": "1950-10-19T14:51:20Z", "ms": -605956119926.3374 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-18T18:39:58+03:00", "utc": "1950-10-18T15:39:58Z", "ms": -606039601718.5144 }, "end": { "local": "1950-10-19T17:51:20+03:00", "utc": "1950-10-19T14:51:20Z", "ms": -605956119926.3374 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-10-18", "window": { "start": { "local": "1950-10-18T11:28:35+03:00", "utc": "1950-10-18T08:28:35Z", "ms": -606065485178.0238 }, "end": { "local": "1950-10-18T12:16:35+03:00", "utc": "1950-10-18T09:16:35Z", "ms": -606062605178.0238 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-10-19", "window": { "start": { "local": "1950-10-19T11:28:23+03:00", "utc": "1950-10-19T08:28:23Z", "ms": -605979096593.3589 }, "end": { "local": "1950-10-19T12:16:23+03:00", "utc": "1950-10-19T09:16:23Z", "ms": -605976216593.3589 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 18:40 on Wed 18 Oct to 17:51 on Thu 19 Oct.", "fact": "1950-10-18T15:39:58Z → 1950-10-19T14:51:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 18th, 11:28–12:16 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20097 s" }, { "step": "ruling", "text": "Mahānavamī, Mosul, 1950: Thursday 19 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": "1950-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-19", "confidence": "determinate" } ], "quote": "In Mosul, Mahānavamī 1950 falls on Thursday 19 October. Navamī runs from 18:40 on Wed 18 Oct to 17:51 on Thu 19 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1459, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1950-10-19T17:51:20+03:00", "utc": "1950-10-19T14:51:20Z", "ms": -605956119926.3374 }, "end": { "local": "1950-10-20T17:38:19+03:00", "utc": "1950-10-20T14:38:19Z", "ms": -605870501138.7312 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-19T17:51:20+03:00", "utc": "1950-10-19T14:51:20Z", "ms": -605956119926.3374 }, "end": { "local": "1950-10-20T17:38:19+03:00", "utc": "1950-10-20T14:38:19Z", "ms": -605870501138.7312 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-10-19", "window": { "start": { "local": "1950-10-19T11:28:23+03:00", "utc": "1950-10-19T08:28:23Z", "ms": -605979096593.3589 }, "end": { "local": "1950-10-19T12:16:23+03:00", "utc": "1950-10-19T09:16:23Z", "ms": -605976216593.3589 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-10-20", "window": { "start": { "local": "1950-10-20T11:28:13+03:00", "utc": "1950-10-20T08:28:13Z", "ms": -605892707403.4586 }, "end": { "local": "1950-10-20T12:16:13+03:00", "utc": "1950-10-20T09:16:13Z", "ms": -605889827403.4586 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 17:51 on Thu 19 Oct to 17:38 on Fri 20 Oct.", "fact": "1950-10-19T14:51:20Z → 1950-10-20T14:38:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 19th, 11:28–12:16 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1459 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Mosul, 1950: Friday 20 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": "1950-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-20", "confidence": "determinate" } ], "quote": "In Mosul, Vijayā Daśamī (Dussehra) 1950 falls on Friday 20 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 17:51 on Thu 19 Oct to 17:38 on Fri 20 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-10-21", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40779, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-10-20T17:38:19+03:00", "utc": "1950-10-20T14:38:19Z", "ms": -605870501138.7312 }, "end": { "local": "1950-10-21T17:58:51+03:00", "utc": "1950-10-21T14:58:51Z", "ms": -605782868873.7341 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-20T17:38:19+03:00", "utc": "1950-10-20T14:38:19Z", "ms": -605870501138.7312 }, "end": { "local": "1950-10-21T17:58:51+03:00", "utc": "1950-10-21T14:58:51Z", "ms": -605782868873.7341 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-10-20", "window": { "start": { "local": "1950-10-20T06:18:40+03:00", "utc": "1950-10-20T03:18:40Z", "ms": -605911279720.3091 }, "end": { "local": "1950-10-20T06:18:40+03:00", "utc": "1950-10-20T03:18:40Z", "ms": -605911279720.3091 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-10-21", "window": { "start": { "local": "1950-10-21T06:19:36+03:00", "utc": "1950-10-21T03:19:36Z", "ms": -605824824453.093 }, "end": { "local": "1950-10-21T06:19:36+03:00", "utc": "1950-10-21T03:19:36Z", "ms": -605824824453.093 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:38 on Fri 20 Oct to 17:59 on Sat 21 Oct.", "fact": "1950-10-20T14:38:19Z → 1950-10-21T14:58:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:19 on the 20th and 06:20 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 40779 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Mosul, 1950: Saturday 21 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": "1950-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-21", "confidence": "determinate" } ], "quote": "In Mosul, Pāśāṅkuśā Ekādaśī 1950 falls on Saturday 21 October. Ekādaśī runs from 17:38 on Fri 20 Oct to 17:59 on Sat 21 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-10-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-23", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1037, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-10-22T18:49:43+03:00", "utc": "1950-10-22T15:49:43Z", "ms": -605693416697.7961 }, "end": { "local": "1950-10-23T20:07:09+03:00", "utc": "1950-10-23T17:07:09Z", "ms": -605602371420.9749 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1950-10-22T18:49:43+03:00", "utc": "1950-10-22T15:49:43Z", "ms": -605693416697.7961 }, "end": { "local": "1950-10-23T20:07:09+03:00", "utc": "1950-10-23T17:07:09Z", "ms": -605602371420.9749 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-10-22", "window": { "start": { "local": "1950-10-22T17:23:15+03:00", "utc": "1950-10-22T14:23:15Z", "ms": -605698605422.8289 }, "end": { "local": "1950-10-22T19:07:00+03:00", "utc": "1950-10-22T16:07:00Z", "ms": -605692379753.6932 } }, "covered_min": 17, "window_min": 104, "qualifies": true }, { "local_date": "1950-10-23", "window": { "start": { "local": "1950-10-23T17:22:01+03:00", "utc": "1950-10-23T14:22:01Z", "ms": -605612279138.9225 }, "end": { "local": "1950-10-23T19:06:04+03:00", "utc": "1950-10-23T16:06:04Z", "ms": -605606036136.0563 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:50 on Sun 22 Oct to 20:07 on Mon 23 Oct.", "fact": "1950-10-22T15:49:43Z → 1950-10-23T17:07:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:23–19:07 on the 22nd, 17:22–19:06 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 17 of 104 minutes on the 22nd and 104 of 104 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1037 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Monday 23 October.", "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": "1950-10-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-23", "confidence": "boundary" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Monday 23 October. Trayodaśī runs from 18:50 on Sun 22 Oct to 20:07 on Mon 23 Oct and covers all of pradoṣa that evening. It also reaches the previous evening for 17 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/mosul/festivals/1950/pradosha-vrata?on=1950-10-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37805, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-10-29T06:58:09+03:00", "utc": "1950-10-29T03:58:09Z", "ms": -605131311379.4497 }, "end": { "local": "1950-10-30T09:29:04+03:00", "utc": "1950-10-30T06:29:04Z", "ms": -605035855750.814 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-10-29T06:58:09+03:00", "utc": "1950-10-29T03:58:09Z", "ms": -605131311379.4497 }, "end": { "local": "1950-10-30T09:29:04+03:00", "utc": "1950-10-30T06:29:04Z", "ms": -605035855750.814 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-10-29", "window": { "start": { "local": "1950-10-29T19:10:42+03:00", "utc": "1950-10-29T16:10:42Z", "ms": -605087357795.5104 }, "end": { "local": "1950-10-29T19:10:42+03:00", "utc": "1950-10-29T16:10:42Z", "ms": -605087357795.5104 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-10-30", "window": { "start": { "local": "1950-10-30T19:59:10+03:00", "utc": "1950-10-30T16:59:10Z", "ms": -604998050369.135 }, "end": { "local": "1950-10-30T19:59:10+03:00", "utc": "1950-10-30T16:59:10Z", "ms": -604998050369.135 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:58 on Sun 29 Oct to 09:29 on Mon 30 Oct.", "fact": "1950-10-29T03:58:09Z → 1950-10-30T06:29:04Z" }, { "step": "kaala", "text": "Moonrise is at 19:11 on the 29th and 19:59 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37805 s" }, { "step": "ruling", "text": "Karaka Caturthī, Mosul, 1950: Sunday 29 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": "1950-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-29", "confidence": "determinate" } ], "quote": "In Mosul, Karaka Caturthī (Karwa Chauth) 1950 falls on Sunday 29 October. Caturthī runs from 06:58 on Sun 29 Oct to 09:29 on Mon 30 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-10-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37805, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-10-29T06:58:09+03:00", "utc": "1950-10-29T03:58:09Z", "ms": -605131311379.4497 }, "end": { "local": "1950-10-30T09:29:04+03:00", "utc": "1950-10-30T06:29:04Z", "ms": -605035855750.814 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-10-29T06:58:09+03:00", "utc": "1950-10-29T03:58:09Z", "ms": -605131311379.4497 }, "end": { "local": "1950-10-30T09:29:04+03:00", "utc": "1950-10-30T06:29:04Z", "ms": -605035855750.814 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-10-29", "window": { "start": { "local": "1950-10-29T19:10:42+03:00", "utc": "1950-10-29T16:10:42Z", "ms": -605087357795.5104 }, "end": { "local": "1950-10-29T19:10:42+03:00", "utc": "1950-10-29T16:10:42Z", "ms": -605087357795.5104 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-10-30", "window": { "start": { "local": "1950-10-30T19:59:10+03:00", "utc": "1950-10-30T16:59:10Z", "ms": -604998050369.135 }, "end": { "local": "1950-10-30T19:59:10+03:00", "utc": "1950-10-30T16:59:10Z", "ms": -604998050369.135 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:58 on Sun 29 Oct to 09:29 on Mon 30 Oct.", "fact": "1950-10-29T03:58:09Z → 1950-10-30T06:29:04Z" }, { "step": "kaala", "text": "Moonrise is at 19:11 on the 29th and 19:59 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37805 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Sunday 29 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": "1950-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-10-29", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Sunday 29 October. Caturthī runs from 06:58 on Sun 29 Oct to 09:29 on Mon 30 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26996, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-11-02T15:27:22+03:00", "utc": "1950-11-02T12:27:22Z", "ms": -604755157751.8135 }, "end": { "local": "1950-11-03T16:22:48+03:00", "utc": "1950-11-03T13:22:48Z", "ms": -604665431864.5367 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-02T15:27:22+03:00", "utc": "1950-11-02T12:27:22Z", "ms": -604755157751.8135 }, "end": { "local": "1950-11-03T16:22:48+03:00", "utc": "1950-11-03T13:22:48Z", "ms": -604665431864.5367 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-11-02", "window": { "start": { "local": "1950-11-02T22:57:18+03:00", "utc": "1950-11-02T19:57:18Z", "ms": -604728162192.949 }, "end": { "local": "1950-11-02T22:57:18+03:00", "utc": "1950-11-02T19:57:18Z", "ms": -604728162192.949 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-11-03", "window": { "start": { "local": "1950-11-04T00:02:02+03:00", "utc": "1950-11-03T21:02:02Z", "ms": -604637877598.6475 }, "end": { "local": "1950-11-04T00:02:02+03:00", "utc": "1950-11-03T21:02:02Z", "ms": -604637877598.6475 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:27 on Thu 2 Nov to 16:23 on Fri 3 Nov.", "fact": "1950-11-02T12:27:22Z → 1950-11-03T13:22:48Z" }, { "step": "kaala", "text": "Moonrise is at 22:57 on the 2nd and 00:02 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26996 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Mosul, 1950: Thursday 2 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-02", "confidence": "determinate" } ], "quote": "In Mosul, Ahoyī Aṣṭamī 1950 falls on Thursday 2 November. Aṣṭamī runs from 15:27 on Thu 2 Nov to 16:23 on Fri 3 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-11-06", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28371, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-11-05T15:54:47+03:00", "utc": "1950-11-05T12:54:47Z", "ms": -604494312701.9609 }, "end": { "local": "1950-11-06T14:27:56+03:00", "utc": "1950-11-06T11:27:56Z", "ms": -604413123726.4248 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-05T15:54:47+03:00", "utc": "1950-11-05T12:54:47Z", "ms": -604494312701.9609 }, "end": { "local": "1950-11-06T14:27:56+03:00", "utc": "1950-11-06T11:27:56Z", "ms": -604413123726.4248 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-11-05", "window": { "start": { "local": "1950-11-05T06:34:05+03:00", "utc": "1950-11-05T03:34:05Z", "ms": -604527955187.3792 }, "end": { "local": "1950-11-05T06:34:05+03:00", "utc": "1950-11-05T03:34:05Z", "ms": -604527955187.3792 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-11-06", "window": { "start": { "local": "1950-11-06T06:35:05+03:00", "utc": "1950-11-06T03:35:05Z", "ms": -604441494812.0276 }, "end": { "local": "1950-11-06T06:35:05+03:00", "utc": "1950-11-06T03:35:05Z", "ms": -604441494812.0276 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:55 on Sun 5 Nov to 14:28 on Mon 6 Nov.", "fact": "1950-11-05T12:54:47Z → 1950-11-06T11:27:56Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 5th and 06:35 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28371 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Mosul, 1950: Monday 6 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": "1950-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-06", "confidence": "determinate" } ], "quote": "In Mosul, Ramā Ekādaśī 1950 falls on Monday 6 November. Ekādaśī runs from 15:55 on Sun 5 Nov to 14:28 on Mon 6 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-11-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9534, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-11-06T14:27:56+03:00", "utc": "1950-11-06T11:27:56Z", "ms": -604413123726.4248 }, "end": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-06T14:27:56+03:00", "utc": "1950-11-06T11:27:56Z", "ms": -604413123726.4248 }, "end": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-06", "window": { "start": { "local": "1950-11-06T17:06:51+03:00", "utc": "1950-11-06T14:06:51Z", "ms": -604403589320.5665 }, "end": { "local": "1950-11-06T18:54:45+03:00", "utc": "1950-11-06T15:54:45Z", "ms": -604397115306.0546 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1950-11-07", "window": { "start": { "local": "1950-11-07T17:05:56+03:00", "utc": "1950-11-07T14:05:56Z", "ms": -604317244279.0133 }, "end": { "local": "1950-11-07T18:54:05+03:00", "utc": "1950-11-07T15:54:05Z", "ms": -604310754829.8403 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:28 on Mon 6 Nov to 12:16 on Tue 7 Nov.", "fact": "1950-11-06T11:27:56Z → 1950-11-07T09:16:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:07–18:55 on the 6th, 17:06–18:54 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 108 of 108 minutes on the 6th and 0 of 108 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9534 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Mosul, 1950: Monday 6 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-06", "confidence": "determinate" } ], "quote": "In Mosul, Govatsa Dvādaśī (Vasu Baras) 1950 falls on Monday 6 November. Dvādaśī runs from 14:28 on Mon 6 Nov to 12:16 on Tue 7 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17387, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 }, "end": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 }, "end": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-07", "window": { "start": { "local": "1950-11-07T17:05:56+03:00", "utc": "1950-11-07T14:05:56Z", "ms": -604317244279.0133 }, "end": { "local": "1950-11-07T18:54:05+03:00", "utc": "1950-11-07T15:54:05Z", "ms": -604310754829.8403 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T17:05:02+03:00", "utc": "1950-11-08T14:05:02Z", "ms": -604230897725.8947 }, "end": { "local": "1950-11-08T18:53:27+03:00", "utc": "1950-11-08T15:53:27Z", "ms": -604224393020.2947 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:16 on Tue 7 Nov to 09:26 on Wed 8 Nov.", "fact": "1950-11-07T09:16:08Z → 1950-11-08T06:25:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:06–18:54 on the 7th, 17:05–18:53 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 108 of 108 minutes on the 7th and 0 of 108 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17387 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Mosul, 1950: Tuesday 7 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": "1950-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-07", "confidence": "determinate" } ], "quote": "In Mosul, Yama Dīpadāna 1950 falls on Tuesday 7 November. Trayodaśī runs from 12:16 on Tue 7 Nov to 09:26 on Wed 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-11-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17387, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 }, "end": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-07T12:16:08+03:00", "utc": "1950-11-07T09:16:08Z", "ms": -604334631730.057 }, "end": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-07", "window": { "start": { "local": "1950-11-07T17:05:56+03:00", "utc": "1950-11-07T14:05:56Z", "ms": -604317244279.0133 }, "end": { "local": "1950-11-07T18:54:05+03:00", "utc": "1950-11-07T15:54:05Z", "ms": -604310754829.8403 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T17:05:02+03:00", "utc": "1950-11-08T14:05:02Z", "ms": -604230897725.8947 }, "end": { "local": "1950-11-08T18:53:27+03:00", "utc": "1950-11-08T15:53:27Z", "ms": -604224393020.2947 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:16 on Tue 7 Nov to 09:26 on Wed 8 Nov.", "fact": "1950-11-07T09:16:08Z → 1950-11-08T06:25:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:06–18:54 on the 7th, 17:05–18:53 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 108 of 108 minutes on the 7th and 0 of 108 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 17387 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Tuesday 7 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": "1950-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-07", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Tuesday 7 November. Trayodaśī runs from 12:16 on Tue 7 Nov to 09:26 on Wed 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-11-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-11-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20999, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "end": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "end": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 } }, "kaala": "nishita", "days": [ { "local_date": "1950-11-07", "window": { "start": { "local": "1950-11-07T23:27:31+03:00", "utc": "1950-11-07T20:27:31Z", "ms": -604294348844.6145 }, "end": { "local": "1950-11-08T00:15:31+03:00", "utc": "1950-11-07T21:15:31Z", "ms": -604291468844.6145 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T23:27:35+03:00", "utc": "1950-11-08T20:27:35Z", "ms": -604207945079.8945 }, "end": { "local": "1950-11-09T00:15:35+03:00", "utc": "1950-11-08T21:15:35Z", "ms": -604205065079.8945 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:26 on Wed 8 Nov to 06:06 on Thu 9 Nov.", "fact": "1950-11-08T06:25:49Z → 1950-11-09T03:05:34Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:28–00:16 on the 7th, 23:28–00:16 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20999 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Wednesday 8 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": "1950-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-08", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Wednesday 8 November. Caturdaśī runs from 09:26 on Wed 8 Nov to 06:06 on Thu 9 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-11-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1953, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "end": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-08T09:25:49+03:00", "utc": "1950-11-08T06:25:49Z", "ms": -604258450680.837 }, "end": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 } }, "kaala": "arunodaya", "days": [ { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T04:48:57+03:00", "utc": "1950-11-08T01:48:57Z", "ms": -604275062859.3888 }, "end": { "local": "1950-11-08T06:37:07+03:00", "utc": "1950-11-08T03:37:07Z", "ms": -604268573410.2158 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "1950-11-09", "window": { "start": { "local": "1950-11-09T04:49:43+03:00", "utc": "1950-11-09T01:49:43Z", "ms": -604188617139.4945 }, "end": { "local": "1950-11-09T06:38:08+03:00", "utc": "1950-11-09T03:38:08Z", "ms": -604182112433.8945 } }, "covered_min": 76, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:26 on Wed 8 Nov to 06:06 on Thu 9 Nov.", "fact": "1950-11-08T06:25:49Z → 1950-11-09T03:05:34Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:49–06:37 on the 8th, 04:50–06:38 on the 9th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 108 minutes on the 8th and 76 of 108 on the 9th.", "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 1953 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Mosul, 1950: Thursday 9 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": "1950-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-09", "confidence": "determinate" } ], "quote": "In Mosul, Naraka Caturdaśī (Choti Diwali) 1950 falls on Thursday 9 November. Caturdaśī runs from 09:26 on Wed 8 Nov to 06:06 on Thu 9 Nov and covers 76 of 108 minutes of aruṇodaya that dawn.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27155, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "end": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "end": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T17:05:02+03:00", "utc": "1950-11-08T14:05:02Z", "ms": -604230897725.8947 }, "end": { "local": "1950-11-08T18:53:27+03:00", "utc": "1950-11-08T15:53:27Z", "ms": -604224393020.2947 } }, "covered_min": 0, "window_min": 108, "qualifies": false }, { "local_date": "1950-11-09", "window": { "start": { "local": "1950-11-09T17:04:10+03:00", "utc": "1950-11-09T14:04:10Z", "ms": -604144549633.8253 }, "end": { "local": "1950-11-09T18:52:50+03:00", "utc": "1950-11-09T15:52:50Z", "ms": -604138029857.5574 } }, "covered_min": 109, "window_min": 109, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 06:06 on Thu 9 Nov to 02:25 on Fri 10 Nov.", "fact": "1950-11-09T03:05:34Z → 1950-11-09T23:25:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:05–18:53 on the 8th, 17:04–18:53 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 108 minutes on the 8th and 109 of 109 on the 9th.", "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 27155 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Mosul, 1950: Thursday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-09", "confidence": "determinate" } ], "quote": "In Mosul, Lakṣmī Pūjā (Diwali) 1950 falls on Thursday 9 November. Amāvasyā runs from 06:06 on Thu 9 Nov to 02:25 on Fri 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7785, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "end": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-09T06:05:34+03:00", "utc": "1950-11-09T03:05:34Z", "ms": -604184065840.0903 }, "end": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 } }, "kaala": "nishita", "days": [ { "local_date": "1950-11-08", "window": { "start": { "local": "1950-11-08T23:27:35+03:00", "utc": "1950-11-08T20:27:35Z", "ms": -604207945079.8945 }, "end": { "local": "1950-11-09T00:15:35+03:00", "utc": "1950-11-08T21:15:35Z", "ms": -604205065079.8945 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-09", "window": { "start": { "local": "1950-11-09T23:27:40+03:00", "utc": "1950-11-09T20:27:40Z", "ms": -604121540472.8204 }, "end": { "local": "1950-11-10T00:15:40+03:00", "utc": "1950-11-09T21:15:40Z", "ms": -604118660472.8204 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 06:06 on Thu 9 Nov to 02:25 on Fri 10 Nov.", "fact": "1950-11-09T03:05:34Z → 1950-11-09T23:25:25Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:28–00:16 on the 8th, 23:28–00:16 on the 9th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7785 s" }, { "step": "ruling", "text": "Kālī Pūjā, Mosul, 1950: Thursday 9 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": "1950-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-09", "confidence": "determinate" } ], "quote": "In Mosul, Kālī Pūjā 1950 falls on Thursday 9 November. Amāvasyā runs from 06:06 on Thu 9 Nov to 02:25 on Fri 10 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32510, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-10", "window": { "start": { "local": "1950-11-10T11:27:14+03:00", "utc": "1950-11-10T08:27:14Z", "ms": -604078365644.3508 }, "end": { "local": "1950-11-10T12:15:14+03:00", "utc": "1950-11-10T09:15:14Z", "ms": -604075485644.3508 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-11-11", "window": { "start": { "local": "1950-11-11T11:27:21+03:00", "utc": "1950-11-11T08:27:21Z", "ms": -603991959402.7617 }, "end": { "local": "1950-11-11T12:15:21+03:00", "utc": "1950-11-11T09:15:21Z", "ms": -603989079402.7617 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov.", "fact": "1950-11-09T23:25:25Z → 1950-11-10T19:36:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 10th, 11:27–12:15 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32510 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Mosul, 1950: Friday 10 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": "1950-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-10", "confidence": "determinate" } ], "quote": "In Mosul, Govardhana Pūjā 1950 falls on Friday 10 November. Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13440, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-09", "window": { "start": { "local": "1950-11-09T17:04:10+03:00", "utc": "1950-11-09T14:04:10Z", "ms": -604144549633.8253 }, "end": { "local": "1950-11-09T18:52:50+03:00", "utc": "1950-11-09T15:52:50Z", "ms": -604138029857.5574 } }, "covered_min": 0, "window_min": 109, "qualifies": false }, { "local_date": "1950-11-10", "window": { "start": { "local": "1950-11-10T17:03:20+03:00", "utc": "1950-11-10T14:03:20Z", "ms": -604058199976.8861 }, "end": { "local": "1950-11-10T18:52:15+03:00", "utc": "1950-11-10T15:52:15Z", "ms": -604051665323.3628 } }, "covered_min": 109, "window_min": 109, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov.", "fact": "1950-11-09T23:25:25Z → 1950-11-10T19:36:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:04–18:53 on the 9th, 17:03–18:52 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 0 of 109 minutes on the 9th and 109 of 109 on the 10th.", "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 13440 s" }, { "step": "ruling", "text": "Bali Pūjā, Mosul, 1950: Friday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-10", "confidence": "determinate" } ], "quote": "In Mosul, Bali Pūjā 1950 falls on Friday 10 November. Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15224, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-10T02:25:25+03:00", "utc": "1950-11-09T23:25:25Z", "ms": -604110875265.4296 }, "end": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 } }, "kaala": "purvahna", "days": [ { "local_date": "1950-11-10", "window": { "start": { "local": "1950-11-10T06:39:09+03:00", "utc": "1950-11-10T03:39:09Z", "ms": -604095651311.8156 }, "end": { "local": "1950-11-10T10:07:12+03:00", "utc": "1950-11-10T07:07:12Z", "ms": -604083167533.5057 } }, "covered_min": 208, "window_min": 208, "qualifies": true }, { "local_date": "1950-11-11", "window": { "start": { "local": "1950-11-11T06:40:10+03:00", "utc": "1950-11-11T03:40:10Z", "ms": -604009190075.4614 }, "end": { "local": "1950-11-11T10:07:37+03:00", "utc": "1950-11-11T07:07:37Z", "ms": -603996742960.3282 } }, "covered_min": 0, "window_min": 207, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov.", "fact": "1950-11-09T23:25:25Z → 1950-11-10T19:36:14Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:39–10:07 on the 10th, 06:40–10:08 on the 11th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 208 of 208 minutes on the 10th and 0 of 207 on the 11th.", "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 15224 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Mosul, 1950: Friday 10 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": "1950-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-10", "confidence": "determinate" } ], "quote": "In Mosul, Dyūta Pratipad 1950 falls on Friday 10 November. Pratipadā runs from 02:25 on Fri 10 Nov to 22:36 on Fri 10 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23637, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 }, "end": { "local": "1950-11-11T18:49:18+03:00", "utc": "1950-11-11T15:49:18Z", "ms": -603965441918.513 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-10T22:36:14+03:00", "utc": "1950-11-10T19:36:14Z", "ms": -604038225510.9756 }, "end": { "local": "1950-11-11T18:49:18+03:00", "utc": "1950-11-11T15:49:18Z", "ms": -603965441918.513 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-10", "window": { "start": { "local": "1950-11-10T11:27:14+03:00", "utc": "1950-11-10T08:27:14Z", "ms": -604078365644.3508 }, "end": { "local": "1950-11-10T12:15:14+03:00", "utc": "1950-11-10T09:15:14Z", "ms": -604075485644.3508 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-11", "window": { "start": { "local": "1950-11-11T11:27:21+03:00", "utc": "1950-11-11T08:27:21Z", "ms": -603991959402.7617 }, "end": { "local": "1950-11-11T12:15:21+03:00", "utc": "1950-11-11T09:15:21Z", "ms": -603989079402.7617 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 22:36 on Fri 10 Nov to 18:49 on Sat 11 Nov.", "fact": "1950-11-10T19:36:14Z → 1950-11-11T15:49:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 10th, 11:27–12:15 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 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23637 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Mosul, 1950: Saturday 11 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": "1950-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-11", "confidence": "determinate" } ], "quote": "In Mosul, Yama Dvitīyā (Bhai Dooj) 1950 falls on Saturday 11 November. Dvitīyā runs from 22:36 on Fri 10 Nov to 18:49 on Sat 11 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 574, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-11-12T15:15:43+03:00", "utc": "1950-11-12T12:15:43Z", "ms": -603891856642.7572 }, "end": { "local": "1950-11-13T12:06:01+03:00", "utc": "1950-11-13T09:06:01Z", "ms": -603816838518.7161 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-12T15:15:43+03:00", "utc": "1950-11-12T12:15:43Z", "ms": -603891856642.7572 }, "end": { "local": "1950-11-13T12:06:01+03:00", "utc": "1950-11-13T09:06:01Z", "ms": -603816838518.7161 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-12", "window": { "start": { "local": "1950-11-12T11:27:28+03:00", "utc": "1950-11-12T08:27:28Z", "ms": -603905552313.3885 }, "end": { "local": "1950-11-12T12:15:28+03:00", "utc": "1950-11-12T09:15:28Z", "ms": -603902672313.3885 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-13", "window": { "start": { "local": "1950-11-13T11:27:36+03:00", "utc": "1950-11-13T08:27:36Z", "ms": -603819144380.9441 }, "end": { "local": "1950-11-13T12:15:36+03:00", "utc": "1950-11-13T09:15:36Z", "ms": -603816264380.9441 } }, "covered_min": 38, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:16 on Sun 12 Nov to 12:06 on Mon 13 Nov.", "fact": "1950-11-12T12:15:43Z → 1950-11-13T09:06:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 12th, 11:28–12:16 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 38 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 574 s" }, { "step": "ruling", "text": "Nāga Caturthī, Mosul, 1950: Monday 13 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": "1950-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-13", "confidence": "determinate" } ], "quote": "In Mosul, Nāga Caturthī 1950 falls on Monday 13 November. Caturthī runs from 15:16 on Sun 12 Nov to 12:06 on Mon 13 Nov and covers 38 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-11-13", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 574, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-11-12T15:15:43+03:00", "utc": "1950-11-12T12:15:43Z", "ms": -603891856642.7572 }, "end": { "local": "1950-11-13T12:06:01+03:00", "utc": "1950-11-13T09:06:01Z", "ms": -603816838518.7161 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-12T15:15:43+03:00", "utc": "1950-11-12T12:15:43Z", "ms": -603891856642.7572 }, "end": { "local": "1950-11-13T12:06:01+03:00", "utc": "1950-11-13T09:06:01Z", "ms": -603816838518.7161 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-12", "window": { "start": { "local": "1950-11-12T11:27:28+03:00", "utc": "1950-11-12T08:27:28Z", "ms": -603905552313.3885 }, "end": { "local": "1950-11-12T12:15:28+03:00", "utc": "1950-11-12T09:15:28Z", "ms": -603902672313.3885 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-13", "window": { "start": { "local": "1950-11-13T11:27:36+03:00", "utc": "1950-11-13T08:27:36Z", "ms": -603819144380.9441 }, "end": { "local": "1950-11-13T12:15:36+03:00", "utc": "1950-11-13T09:15:36Z", "ms": -603816264380.9441 } }, "covered_min": 38, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:16 on Sun 12 Nov to 12:06 on Mon 13 Nov.", "fact": "1950-11-12T12:15:43Z → 1950-11-13T09:06:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 12th, 11:28–12:16 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 38 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 574 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Monday 13 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": "1950-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-13", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Monday 13 November. Caturthī runs from 15:16 on Sun 12 Nov to 12:06 on Mon 13 Nov and covers 38 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-11-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7093, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-11-14T09:29:32+03:00", "utc": "1950-11-14T06:29:32Z", "ms": -603739828162.6462 }, "end": { "local": "1950-11-15T07:33:41+03:00", "utc": "1950-11-15T04:33:41Z", "ms": -603660379119.2067 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-14T09:29:32+03:00", "utc": "1950-11-14T06:29:32Z", "ms": -603739828162.6462 }, "end": { "local": "1950-11-15T07:33:41+03:00", "utc": "1950-11-15T04:33:41Z", "ms": -603660379119.2067 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-14", "window": { "start": { "local": "1950-11-14T11:27:44+03:00", "utc": "1950-11-14T08:27:44Z", "ms": -603732735610.0579 }, "end": { "local": "1950-11-14T12:15:44+03:00", "utc": "1950-11-14T09:15:44Z", "ms": -603729855610.0579 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-11-15", "window": { "start": { "local": "1950-11-15T11:27:54+03:00", "utc": "1950-11-15T08:27:54Z", "ms": -603646326005.0367 }, "end": { "local": "1950-11-15T12:15:54+03:00", "utc": "1950-11-15T09:15:54Z", "ms": -603643446005.0367 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:30 on Tue 14 Nov to 07:34 on Wed 15 Nov.", "fact": "1950-11-14T06:29:32Z → 1950-11-15T04:33:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 14th, 11:28–12:16 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7093 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Mosul, 1950: Tuesday 14 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": "1950-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-14", "confidence": "determinate" } ], "quote": "In Mosul, Sūrya Ṣaṣṭhī (Chhath) 1950 falls on Tuesday 14 November. Ṣaṣṭhī runs from 09:30 on Tue 14 Nov to 07:34 on Wed 15 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18286, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1950-11-16T06:23:19+03:00", "utc": "1950-11-16T03:23:19Z", "ms": -603578201288.1288 }, "end": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-16T06:23:19+03:00", "utc": "1950-11-16T03:23:19Z", "ms": -603578201288.1288 }, "end": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-16", "window": { "start": { "local": "1950-11-16T11:28:04+03:00", "utc": "1950-11-16T08:28:04Z", "ms": -603559915569.8752 }, "end": { "local": "1950-11-16T12:16:04+03:00", "utc": "1950-11-16T09:16:04Z", "ms": -603557035569.8752 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-11-17", "window": { "start": { "local": "1950-11-17T11:28:16+03:00", "utc": "1950-11-17T08:28:16Z", "ms": -603473504308.4365 }, "end": { "local": "1950-11-17T12:16:16+03:00", "utc": "1950-11-17T09:16:16Z", "ms": -603470624308.4365 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:23 on Thu 16 Nov to 06:00 on Fri 17 Nov.", "fact": "1950-11-16T03:23:19Z → 1950-11-17T03:00:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 16th, 11:28–12:16 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18286 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Mosul, 1950: Thursday 16 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-16", "confidence": "determinate" } ], "quote": "In Mosul, Gopāṣṭamī 1950 falls on Thursday 16 November. Aṣṭamī runs from 06:23 on Thu 16 Nov to 06:00 on Fri 17 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1516, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 }, "end": { "local": "1950-11-18T06:22:03+03:00", "utc": "1950-11-18T03:22:03Z", "ms": -603405476777.6865 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 }, "end": { "local": "1950-11-18T06:22:03+03:00", "utc": "1950-11-18T03:22:03Z", "ms": -603405476777.6865 } }, "kaala": "purvahna", "days": [ { "local_date": "1950-11-17", "window": { "start": { "local": "1950-11-17T06:46:18+03:00", "utc": "1950-11-17T03:46:18Z", "ms": -603490422169.8557 }, "end": { "local": "1950-11-17T10:10:16+03:00", "utc": "1950-11-17T07:10:16Z", "ms": -603478183595.5762 } }, "covered_min": 204, "window_min": 204, "qualifies": true }, { "local_date": "1950-11-18", "window": { "start": { "local": "1950-11-18T06:47:19+03:00", "utc": "1950-11-18T03:47:19Z", "ms": -603403961091.3961 }, "end": { "local": "1950-11-18T10:10:45+03:00", "utc": "1950-11-18T07:10:45Z", "ms": -603391755180.2603 } }, "covered_min": 0, "window_min": 203, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:00 on Fri 17 Nov to 06:22 on Sat 18 Nov.", "fact": "1950-11-17T03:00:03Z → 1950-11-18T03:22:03Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:46–10:10 on the 17th, 06:47–10:11 on the 18th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 204 of 204 minutes on the 17th and 0 of 203 on the 18th.", "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 1516 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Mosul, 1950: Friday 17 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": "1950-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-17", "confidence": "determinate" } ], "quote": "In Mosul, Akṣaya Navamī (Amla Navami) 1950 falls on Friday 17 November. Navamī runs from 06:00 on Fri 17 Nov to 06:22 on Sat 18 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18385, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 }, "end": { "local": "1950-11-18T06:22:03+03:00", "utc": "1950-11-18T03:22:03Z", "ms": -603405476777.6865 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-17T06:00:03+03:00", "utc": "1950-11-17T03:00:03Z", "ms": -603493197108.3252 }, "end": { "local": "1950-11-18T06:22:03+03:00", "utc": "1950-11-18T03:22:03Z", "ms": -603405476777.6865 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-17", "window": { "start": { "local": "1950-11-17T11:28:16+03:00", "utc": "1950-11-17T08:28:16Z", "ms": -603473504308.4365 }, "end": { "local": "1950-11-17T12:16:16+03:00", "utc": "1950-11-17T09:16:16Z", "ms": -603470624308.4365 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-11-18", "window": { "start": { "local": "1950-11-18T11:28:28+03:00", "utc": "1950-11-18T08:28:28Z", "ms": -603387092224.6923 }, "end": { "local": "1950-11-18T12:16:28+03:00", "utc": "1950-11-18T09:16:28Z", "ms": -603384212224.6923 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:00 on Fri 17 Nov to 06:22 on Sat 18 Nov.", "fact": "1950-11-17T03:00:03Z → 1950-11-18T03:22:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 17th, 11:28–12:16 on the 18th.", "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 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18385 s" }, { "step": "ruling", "text": "Durgā Navamī, Mosul, 1950: Friday 17 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-17", "confidence": "determinate" } ], "quote": "In Mosul, Durgā Navamī 1950 falls on Friday 17 November. Navamī runs from 06:00 on Fri 17 Nov to 06:22 on Sat 18 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-11-20", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2160, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-11-19T07:24:20+03:00", "utc": "1950-11-19T04:24:20Z", "ms": -603315340324.456 }, "end": { "local": "1950-11-20T08:59:36+03:00", "utc": "1950-11-20T05:59:36Z", "ms": -603223224124.2823 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-19T07:24:20+03:00", "utc": "1950-11-19T04:24:20Z", "ms": -603315340324.456 }, "end": { "local": "1950-11-20T08:59:36+03:00", "utc": "1950-11-20T05:59:36Z", "ms": -603223224124.2823 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-11-19", "window": { "start": { "local": "1950-11-19T06:48:20+03:00", "utc": "1950-11-19T03:48:20Z", "ms": -603317500171.4485 }, "end": { "local": "1950-11-19T06:48:20+03:00", "utc": "1950-11-19T03:48:20Z", "ms": -603317500171.4485 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-11-20", "window": { "start": { "local": "1950-11-20T06:49:21+03:00", "utc": "1950-11-20T03:49:21Z", "ms": -603231039444.2468 }, "end": { "local": "1950-11-20T06:49:21+03:00", "utc": "1950-11-20T03:49:21Z", "ms": -603231039444.2468 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:24 on Sun 19 Nov to 09:00 on Mon 20 Nov.", "fact": "1950-11-19T04:24:20Z → 1950-11-20T05:59:36Z" }, { "step": "kaala", "text": "Sunrise is at 06:48 on the 19th and 06:49 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 19th and is on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2160 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Mosul, 1950: Monday 20 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": "1950-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-20", "confidence": "determinate" } ], "quote": "In Mosul, Prabodhinī Ekādaśī 1950 falls on Monday 20 November. Ekādaśī runs from 07:24 on Sun 19 Nov to 09:00 on Mon 20 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-11-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13147, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-11-21T10:59:36+03:00", "utc": "1950-11-21T07:59:36Z", "ms": -603129624253.6705 }, "end": { "local": "1950-11-22T13:16:20+03:00", "utc": "1950-11-22T10:16:20Z", "ms": -603035020186.6597 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-21T10:59:36+03:00", "utc": "1950-11-21T07:59:36Z", "ms": -603129624253.6705 }, "end": { "local": "1950-11-22T13:16:20+03:00", "utc": "1950-11-22T10:16:20Z", "ms": -603035020186.6597 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-11-21", "window": { "start": { "local": "1950-11-21T16:55:57+03:00", "utc": "1950-11-21T13:55:57Z", "ms": -603108243226.3992 }, "end": { "local": "1950-11-21T18:47:20+03:00", "utc": "1950-11-21T15:47:20Z", "ms": -603101559957.3396 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "1950-11-22", "window": { "start": { "local": "1950-11-22T16:55:27+03:00", "utc": "1950-11-22T13:55:27Z", "ms": -603021872814.9287 }, "end": { "local": "1950-11-22T18:47:02+03:00", "utc": "1950-11-22T15:47:02Z", "ms": -603015177609.2316 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:00 on Tue 21 Nov to 13:16 on Wed 22 Nov.", "fact": "1950-11-21T07:59:36Z → 1950-11-22T10:16:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:56–18:47 on the 21st, 16:55–18:47 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 111 of 111 minutes on the 21st and 0 of 112 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13147 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Tuesday 21 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": "1950-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-21", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Tuesday 21 November. Trayodaśī runs from 11:00 on Tue 21 Nov to 13:16 on Wed 22 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-11-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18983, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-11-23T15:42:58+03:00", "utc": "1950-11-23T12:42:58Z", "ms": -602939822332.6858 }, "end": { "local": "1950-11-24T18:14:04+03:00", "utc": "1950-11-24T15:14:04Z", "ms": -602844356280.581 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-23T15:42:58+03:00", "utc": "1950-11-23T12:42:58Z", "ms": -602939822332.6858 }, "end": { "local": "1950-11-24T18:14:04+03:00", "utc": "1950-11-24T15:14:04Z", "ms": -602844356280.581 } }, "kaala": "nishita", "days": [ { "local_date": "1950-11-23", "window": { "start": { "local": "1950-11-23T23:30:10+03:00", "utc": "1950-11-23T20:30:10Z", "ms": -602911789844.4152 }, "end": { "local": "1950-11-24T00:18:10+03:00", "utc": "1950-11-23T21:18:10Z", "ms": -602908909844.4152 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-11-24", "window": { "start": { "local": "1950-11-24T23:30:27+03:00", "utc": "1950-11-24T20:30:27Z", "ms": -602825373128.6982 }, "end": { "local": "1950-11-25T00:18:27+03:00", "utc": "1950-11-24T21:18:27Z", "ms": -602822493128.6982 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:43 on Thu 23 Nov to 18:14 on Fri 24 Nov.", "fact": "1950-11-23T12:42:58Z → 1950-11-24T15:14:04Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:30–00:18 on the 23rd, 23:30–00:18 on the 24th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18983 s" }, { "step": "ruling", "text": "Rāsayātrā, Mosul, 1950: Thursday 23 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": "1950-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-23", "confidence": "determinate" } ], "quote": "In Mosul, Rāsayātrā 1950 falls on Thursday 23 November. Pūrṇimā runs from 15:43 on Thu 23 Nov to 18:14 on Fri 24 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12317, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-11-23T15:42:58+03:00", "utc": "1950-11-23T12:42:58Z", "ms": -602939822332.6858 }, "end": { "local": "1950-11-24T18:14:04+03:00", "utc": "1950-11-24T15:14:04Z", "ms": -602844356280.581 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1950-11-23T15:42:58+03:00", "utc": "1950-11-23T12:42:58Z", "ms": -602939822332.6858 }, "end": { "local": "1950-11-24T18:14:04+03:00", "utc": "1950-11-24T15:14:04Z", "ms": -602844356280.581 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-11-23", "window": { "start": { "local": "1950-11-23T11:29:40+03:00", "utc": "1950-11-23T08:29:40Z", "ms": -602955019643.7109 }, "end": { "local": "1950-11-23T12:17:40+03:00", "utc": "1950-11-23T09:17:40Z", "ms": -602952139643.7109 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-11-24", "window": { "start": { "local": "1950-11-24T11:29:57+03:00", "utc": "1950-11-24T08:29:57Z", "ms": -602868602739.7587 }, "end": { "local": "1950-11-24T12:17:57+03:00", "utc": "1950-11-24T09:17:57Z", "ms": -602865722739.7587 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:43 on Thu 23 Nov to 18:14 on Fri 24 Nov.", "fact": "1950-11-23T12:42:58Z → 1950-11-24T15:14:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 23rd, 11:30–12:18 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12317 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Mosul, 1950: Friday 24 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": "1950-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-24", "confidence": "determinate" } ], "quote": "In Mosul, Kārtikī Pūrṇimā 1950 falls on Friday 24 November. Pūrṇimā runs from 15:43 on Thu 23 Nov to 18:14 on Fri 24 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-11-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24197, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-11-28T01:31:44+03:00", "utc": "1950-11-27T22:31:44Z", "ms": -602558895852.4894 }, "end": { "local": "1950-11-29T03:36:56+03:00", "utc": "1950-11-29T00:36:56Z", "ms": -602464983805.5233 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-11-28T01:31:44+03:00", "utc": "1950-11-27T22:31:44Z", "ms": -602558895852.4894 }, "end": { "local": "1950-11-29T03:36:56+03:00", "utc": "1950-11-29T00:36:56Z", "ms": -602464983805.5233 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-11-27", "window": { "start": { "local": "1950-11-27T18:48:27+03:00", "utc": "1950-11-27T15:48:27Z", "ms": -602583092504.0509 }, "end": { "local": "1950-11-27T18:48:27+03:00", "utc": "1950-11-27T15:48:27Z", "ms": -602583092504.0509 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1950-11-28", "window": { "start": { "local": "1950-11-28T19:46:46+03:00", "utc": "1950-11-28T16:46:46Z", "ms": -602493193588.8818 }, "end": { "local": "1950-11-28T19:46:46+03:00", "utc": "1950-11-28T16:46:46Z", "ms": -602493193588.8818 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:32 on Tue 28 Nov to 03:37 on Wed 29 Nov.", "fact": "1950-11-27T22:31:44Z → 1950-11-29T00:36:56Z" }, { "step": "kaala", "text": "Moonrise is at 18:48 on the 27th and 19:47 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 24197 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Tuesday 28 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": "1950-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-11-28", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Tuesday 28 November. Caturthī runs from 01:32 on Tue 28 Nov to 03:37 on Wed 29 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/ekadashi?on=1950-12-05", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7946, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-12-05T04:51:16+03:00", "utc": "1950-12-05T01:51:16Z", "ms": -601942124219.8074 }, "end": { "local": "1950-12-06T02:32:18+03:00", "utc": "1950-12-05T23:32:18Z", "ms": -601864062160.9415 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-05T04:51:16+03:00", "utc": "1950-12-05T01:51:16Z", "ms": -601942124219.8074 }, "end": { "local": "1950-12-06T02:32:18+03:00", "utc": "1950-12-05T23:32:18Z", "ms": -601864062160.9415 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-12-05", "window": { "start": { "local": "1950-12-05T07:03:42+03:00", "utc": "1950-12-05T04:03:42Z", "ms": -601934177833.1241 }, "end": { "local": "1950-12-05T07:03:42+03:00", "utc": "1950-12-05T04:03:42Z", "ms": -601934177833.1241 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-12-06", "window": { "start": { "local": "1950-12-06T07:04:34+03:00", "utc": "1950-12-06T04:04:34Z", "ms": -601847725656.0203 }, "end": { "local": "1950-12-06T07:04:34+03:00", "utc": "1950-12-06T04:04:34Z", "ms": -601847725656.0203 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:51 on Tue 5 Dec to 02:32 on Wed 6 Dec.", "fact": "1950-12-05T01:51:16Z → 1950-12-05T23:32:18Z" }, { "step": "kaala", "text": "Sunrise is at 07:04 on the 5th and 07:05 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 7946 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Mosul, 1950: Tuesday 5 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": "1950-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-05", "confidence": "determinate" } ], "quote": "In Mosul, Utpannā Ekādaśī 1950 falls on Tuesday 5 December. Ekādaśī runs from 04:51 on Tue 5 Dec to 02:32 on Wed 6 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-12-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/pradosha-vrata?on=1950-12-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4980, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-12-06T23:35:24+03:00", "utc": "1950-12-06T20:35:24Z", "ms": -601788275606.0953 }, "end": { "local": "1950-12-07T20:08:54+03:00", "utc": "1950-12-07T17:08:54Z", "ms": -601714265719.0542 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-06T23:35:24+03:00", "utc": "1950-12-06T20:35:24Z", "ms": -601788275606.0953 }, "end": { "local": "1950-12-07T20:08:54+03:00", "utc": "1950-12-07T17:08:54Z", "ms": -601714265719.0542 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-12-06", "window": { "start": { "local": "1950-12-06T16:51:59+03:00", "utc": "1950-12-06T13:51:59Z", "ms": -601812480681.4124 }, "end": { "local": "1950-12-06T18:45:47+03:00", "utc": "1950-12-06T15:45:47Z", "ms": -601805653179.0662 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1950-12-07", "window": { "start": { "local": "1950-12-07T16:52:00+03:00", "utc": "1950-12-07T13:52:00Z", "ms": -601726080297.3479 }, "end": { "local": "1950-12-07T18:45:54+03:00", "utc": "1950-12-07T15:45:54Z", "ms": -601719246145.8027 } }, "covered_min": 114, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:35 on Wed 6 Dec to 20:09 on Thu 7 Dec.", "fact": "1950-12-06T20:35:24Z → 1950-12-07T17:08:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:52–18:46 on the 6th, 16:52–18:46 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 114 minutes on the 6th and 114 of 114 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 4980 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Mosul, 1950: Thursday 7 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": "1950-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-07", "confidence": "determinate" } ], "quote": "In Mosul, Kṛṣṇa Pradoṣa Vrata 1950 falls on Thursday 7 December. Trayodaśī runs from 23:35 on Wed 6 Dec to 20:09 on Thu 7 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-12-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/shivaratri?on=1950-12-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12373, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1950-12-07T20:08:54+03:00", "utc": "1950-12-07T17:08:54Z", "ms": -601714265719.0542 }, "end": { "local": "1950-12-08T16:22:52+03:00", "utc": "1950-12-08T13:22:52Z", "ms": -601641427718.0596 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-07T20:08:54+03:00", "utc": "1950-12-07T17:08:54Z", "ms": -601714265719.0542 }, "end": { "local": "1950-12-08T16:22:52+03:00", "utc": "1950-12-08T13:22:52Z", "ms": -601641427718.0596 } }, "kaala": "nishita", "days": [ { "local_date": "1950-12-07", "window": { "start": { "local": "1950-12-07T23:35:08+03:00", "utc": "1950-12-07T20:35:08Z", "ms": -601701892229.0536 }, "end": { "local": "1950-12-08T00:23:08+03:00", "utc": "1950-12-07T21:23:08Z", "ms": -601699012229.0536 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-12-08", "window": { "start": { "local": "1950-12-08T23:35:34+03:00", "utc": "1950-12-08T20:35:34Z", "ms": -601615466410.7285 }, "end": { "local": "1950-12-09T00:23:34+03:00", "utc": "1950-12-08T21:23:34Z", "ms": -601612586410.7285 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:09 on Thu 7 Dec to 16:23 on Fri 8 Dec.", "fact": "1950-12-07T17:08:54Z → 1950-12-08T13:22:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:35–00:23 on the 7th, 23:36–00:24 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12373 s" }, { "step": "ruling", "text": "Śivarātri, Mosul, 1950: Thursday 7 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": "1950-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-07", "confidence": "determinate" } ], "quote": "In Mosul, Śivarātri 1950 falls on Thursday 7 December. Caturdaśī runs from 20:09 on Thu 7 Dec to 16:23 on Fri 8 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/mosul/festivals/1950/shivaratri?on=1950-12-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/vinayaka-chaturthi?on=1950-12-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35000, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-12-12T01:53:39+03:00", "utc": "1950-12-11T22:53:39Z", "ms": -601347980899.4586 }, "end": { "local": "1950-12-12T23:22:11+03:00", "utc": "1950-12-12T20:22:11Z", "ms": -601270668569.8768 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-12T01:53:39+03:00", "utc": "1950-12-11T22:53:39Z", "ms": -601347980899.4586 }, "end": { "local": "1950-12-12T23:22:11+03:00", "utc": "1950-12-12T20:22:11Z", "ms": -601270668569.8768 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-12", "window": { "start": { "local": "1950-12-12T11:36:59+03:00", "utc": "1950-12-12T08:36:59Z", "ms": -601312981063.134 }, "end": { "local": "1950-12-12T12:24:59+03:00", "utc": "1950-12-12T09:24:59Z", "ms": -601310101063.134 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-12-13", "window": { "start": { "local": "1950-12-13T11:37:27+03:00", "utc": "1950-12-13T08:37:27Z", "ms": -601226552605.7041 }, "end": { "local": "1950-12-13T12:25:27+03:00", "utc": "1950-12-13T09:25:27Z", "ms": -601223672605.7041 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:54 on Tue 12 Dec to 23:22 on Tue 12 Dec.", "fact": "1950-12-11T22:53:39Z → 1950-12-12T20:22:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 12th, 11:37–12:25 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35000 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Mosul, 1950: Tuesday 12 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": "1950-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-12", "confidence": "determinate" } ], "quote": "In Mosul, Vināyaka Caturthī 1950 falls on Tuesday 12 December. Caturthī runs from 01:54 on Tue 12 Dec to 23:22 on Tue 12 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/vinayaka-chaturthi?on=1950-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33045, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1950-12-12T23:22:11+03:00", "utc": "1950-12-12T20:22:11Z", "ms": -601270668569.8768 }, "end": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-12T23:22:11+03:00", "utc": "1950-12-12T20:22:11Z", "ms": -601270668569.8768 }, "end": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-12", "window": { "start": { "local": "1950-12-12T11:36:59+03:00", "utc": "1950-12-12T08:36:59Z", "ms": -601312981063.134 }, "end": { "local": "1950-12-12T12:24:59+03:00", "utc": "1950-12-12T09:24:59Z", "ms": -601310101063.134 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-12-13", "window": { "start": { "local": "1950-12-13T11:37:27+03:00", "utc": "1950-12-13T08:37:27Z", "ms": -601226552605.7041 }, "end": { "local": "1950-12-13T12:25:27+03:00", "utc": "1950-12-13T09:25:27Z", "ms": -601223672605.7041 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:22 on Tue 12 Dec to 21:36 on Wed 13 Dec.", "fact": "1950-12-12T20:22:11Z → 1950-12-13T18:36:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 12th, 11:37–12:25 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33045 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Mosul, 1950: Wednesday 13 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": "1950-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-13", "confidence": "determinate" } ], "quote": "In Mosul, Nāga Pañcamī (Mārgaśīrṣa) 1950 falls on Wednesday 13 December. Pañcamī runs from 23:22 on Tue 12 Dec to 21:36 on Wed 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29714, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 }, "end": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 }, "end": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-13", "window": { "start": { "local": "1950-12-13T11:37:27+03:00", "utc": "1950-12-13T08:37:27Z", "ms": -601226552605.7041 }, "end": { "local": "1950-12-13T12:25:27+03:00", "utc": "1950-12-13T09:25:27Z", "ms": -601223672605.7041 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-12-14", "window": { "start": { "local": "1950-12-14T11:37:56+03:00", "utc": "1950-12-14T08:37:56Z", "ms": -601140123830.5127 }, "end": { "local": "1950-12-14T12:25:56+03:00", "utc": "1950-12-14T09:25:56Z", "ms": -601137243830.5127 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:36 on Wed 13 Dec to 20:41 on Thu 14 Dec.", "fact": "1950-12-13T18:36:13Z → 1950-12-14T17:41:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 13th, 11:38–12:26 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29714 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Mosul, 1950: Thursday 14 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": "1950-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-14", "confidence": "determinate" } ], "quote": "In Mosul, Campā Ṣaṣṭhī 1950 falls on Thursday 14 December. Ṣaṣṭhī runs from 21:36 on Wed 13 Dec to 20:41 on Thu 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29714, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 }, "end": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-13T21:36:13+03:00", "utc": "1950-12-13T18:36:13Z", "ms": -601190627135.7826 }, "end": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-13", "window": { "start": { "local": "1950-12-13T11:37:27+03:00", "utc": "1950-12-13T08:37:27Z", "ms": -601226552605.7041 }, "end": { "local": "1950-12-13T12:25:27+03:00", "utc": "1950-12-13T09:25:27Z", "ms": -601223672605.7041 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-12-14", "window": { "start": { "local": "1950-12-14T11:37:56+03:00", "utc": "1950-12-14T08:37:56Z", "ms": -601140123830.5127 }, "end": { "local": "1950-12-14T12:25:56+03:00", "utc": "1950-12-14T09:25:56Z", "ms": -601137243830.5127 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 21:36 on Wed 13 Dec to 20:41 on Thu 14 Dec.", "fact": "1950-12-13T18:36:13Z → 1950-12-14T17:41:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 13th, 11:38–12:26 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29714 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Mosul, 1950: Thursday 14 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": "1950-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-14", "confidence": "determinate" } ], "quote": "In Mosul, Skanda Ṣaṣṭhī 1950 falls on Thursday 14 December. Ṣaṣṭhī runs from 21:36 on Wed 13 Dec to 20:41 on Thu 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29535, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 }, "end": { "local": "1950-12-15T20:38:41+03:00", "utc": "1950-12-15T17:38:41Z", "ms": -601021279457.2433 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-14T20:41:10+03:00", "utc": "1950-12-14T17:41:10Z", "ms": -601107530172.151 }, "end": { "local": "1950-12-15T20:38:41+03:00", "utc": "1950-12-15T17:38:41Z", "ms": -601021279457.2433 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-14", "window": { "start": { "local": "1950-12-14T11:37:56+03:00", "utc": "1950-12-14T08:37:56Z", "ms": -601140123830.5127 }, "end": { "local": "1950-12-14T12:25:56+03:00", "utc": "1950-12-14T09:25:56Z", "ms": -601137243830.5127 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1950-12-15", "window": { "start": { "local": "1950-12-15T11:38:25+03:00", "utc": "1950-12-15T08:38:25Z", "ms": -601053694771.2329 }, "end": { "local": "1950-12-15T12:26:25+03:00", "utc": "1950-12-15T09:26:25Z", "ms": -601050814771.2329 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:41 on Thu 14 Dec to 20:39 on Fri 15 Dec.", "fact": "1950-12-14T17:41:10Z → 1950-12-15T17:38:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 14th, 11:38–12:26 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29535 s" }, { "step": "ruling", "text": "Mitra Saptamī, Mosul, 1950: Friday 15 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": "1950-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-15", "confidence": "determinate" } ], "quote": "In Mosul, Mitra Saptamī 1950 falls on Friday 15 December. Saptamī runs from 20:41 on Thu 14 Dec to 20:39 on Fri 15 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/ekadashi?on=1950-12-19", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13841, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1950-12-19T00:59:32+03:00", "utc": "1950-12-18T21:59:32Z", "ms": -600746428052.252 }, "end": { "local": "1950-12-20T03:24:01+03:00", "utc": "1950-12-20T00:24:01Z", "ms": -600651358616.4003 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-19T00:59:32+03:00", "utc": "1950-12-18T21:59:32Z", "ms": -600746428052.252 }, "end": { "local": "1950-12-20T03:24:01+03:00", "utc": "1950-12-20T00:24:01Z", "ms": -600651358616.4003 } }, "kaala": "sunrise", "days": [ { "local_date": "1950-12-19", "window": { "start": { "local": "1950-12-19T07:14:08+03:00", "utc": "1950-12-19T04:14:08Z", "ms": -600723952137.2615 }, "end": { "local": "1950-12-19T07:14:08+03:00", "utc": "1950-12-19T04:14:08Z", "ms": -600723952137.2615 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-12-20", "window": { "start": { "local": "1950-12-20T07:14:42+03:00", "utc": "1950-12-20T04:14:42Z", "ms": -600637517821.4833 }, "end": { "local": "1950-12-20T07:14:42+03:00", "utc": "1950-12-20T04:14:42Z", "ms": -600637517821.4833 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:00 on Tue 19 Dec to 03:24 on Wed 20 Dec.", "fact": "1950-12-18T21:59:32Z → 1950-12-20T00:24:01Z" }, { "step": "kaala", "text": "Sunrise is at 07:14 on the 19th and 07:15 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 13841 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Mosul, 1950: Tuesday 19 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": "1950-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-19", "confidence": "determinate" } ], "quote": "In Mosul, Mokṣadā Ekādaśī 1950 falls on Tuesday 19 December. Ekādaśī runs from 01:00 on Tue 19 Dec to 03:24 on Wed 20 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/ekadashi?on=1950-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20563, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1950-12-20T03:24:01+03:00", "utc": "1950-12-20T00:24:01Z", "ms": -600651358616.4003 }, "end": { "local": "1950-12-21T05:58:41+03:00", "utc": "1950-12-21T02:58:41Z", "ms": -600555679475.522 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-20T03:24:01+03:00", "utc": "1950-12-20T00:24:01Z", "ms": -600651358616.4003 }, "end": { "local": "1950-12-21T05:58:41+03:00", "utc": "1950-12-21T02:58:41Z", "ms": -600555679475.522 } }, "kaala": "madhyahna", "days": [ { "local_date": "1950-12-20", "window": { "start": { "local": "1950-12-20T11:40:54+03:00", "utc": "1950-12-20T08:40:54Z", "ms": -600621546355.2751 }, "end": { "local": "1950-12-20T12:28:54+03:00", "utc": "1950-12-20T09:28:54Z", "ms": -600618666355.2751 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1950-12-21", "window": { "start": { "local": "1950-12-21T11:41:24+03:00", "utc": "1950-12-21T08:41:24Z", "ms": -600535116272.6348 }, "end": { "local": "1950-12-21T12:29:24+03:00", "utc": "1950-12-21T09:29:24Z", "ms": -600532236272.6348 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:24 on Wed 20 Dec to 05:59 on Thu 21 Dec.", "fact": "1950-12-20T00:24:01Z → 1950-12-21T02:58:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 20th, 11:41–12:29 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20563 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Mosul, 1950: Wednesday 20 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": "1950-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-20", "confidence": "determinate" } ], "quote": "In Mosul, Akhaṇḍa Dvādaśī 1950 falls on Wednesday 20 December. Dvādaśī runs from 03:24 on Wed 20 Dec to 05:59 on Thu 21 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/pradosha-vrata?on=1950-12-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30110, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1950-12-21T05:58:41+03:00", "utc": "1950-12-21T02:58:41Z", "ms": -600555679475.522 }, "end": { "local": "1950-12-22T08:34:11+03:00", "utc": "1950-12-22T05:34:11Z", "ms": -600459948595.1262 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-21T05:58:41+03:00", "utc": "1950-12-21T02:58:41Z", "ms": -600555679475.522 }, "end": { "local": "1950-12-22T08:34:11+03:00", "utc": "1950-12-22T05:34:11Z", "ms": -600459948595.1262 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-12-21", "window": { "start": { "local": "1950-12-21T16:55:33+03:00", "utc": "1950-12-21T13:55:33Z", "ms": -600516267430.7366 }, "end": { "local": "1950-12-21T18:50:14+03:00", "utc": "1950-12-21T15:50:14Z", "ms": -600509385646.7029 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "1950-12-22", "window": { "start": { "local": "1950-12-22T16:56:02+03:00", "utc": "1950-12-22T13:56:02Z", "ms": -600429838211.2869 }, "end": { "local": "1950-12-22T18:50:44+03:00", "utc": "1950-12-22T15:50:44Z", "ms": -600422956404.6808 } }, "covered_min": 0, "window_min": 115, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:59 on Thu 21 Dec to 08:34 on Fri 22 Dec.", "fact": "1950-12-21T02:58:41Z → 1950-12-22T05:34:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:56–18:50 on the 21st, 16:56–18:51 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 115 of 115 minutes on the 21st and 0 of 115 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30110 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Mosul, 1950: Thursday 21 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": "1950-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-21", "confidence": "determinate" } ], "quote": "In Mosul, Śukla Pradoṣa Vrata 1950 falls on Thursday 21 December. Trayodaśī runs from 05:59 on Thu 21 Dec to 08:34 on Fri 22 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/pradosha-vrata?on=1950-12-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/mosul/festivals/1950/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12851, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1950-12-23T11:03:46+03:00", "utc": "1950-12-23T08:03:46Z", "ms": -600364574183.4485 }, "end": { "local": "1950-12-24T13:22:55+03:00", "utc": "1950-12-24T10:22:55Z", "ms": -600269825155.323 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-23T11:03:46+03:00", "utc": "1950-12-23T08:03:46Z", "ms": -600364574183.4485 }, "end": { "local": "1950-12-24T13:22:55+03:00", "utc": "1950-12-24T10:22:55Z", "ms": -600269825155.323 } }, "kaala": "pradosha", "days": [ { "local_date": "1950-12-23", "window": { "start": { "local": "1950-12-23T16:56:33+03:00", "utc": "1950-12-23T13:56:33Z", "ms": -600343407261.1509 }, "end": { "local": "1950-12-23T18:51:14+03:00", "utc": "1950-12-23T15:51:14Z", "ms": -600336525890.2056 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "1950-12-24", "window": { "start": { "local": "1950-12-24T16:57:05+03:00", "utc": "1950-12-24T13:57:05Z", "ms": -600256974612.0409 }, "end": { "local": "1950-12-24T18:51:46+03:00", "utc": "1950-12-24T15:51:46Z", "ms": -600250094134.6461 } }, "covered_min": 0, "window_min": 115, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:04 on Sat 23 Dec to 13:23 on Sun 24 Dec.", "fact": "1950-12-23T08:03:46Z → 1950-12-24T10:22:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:57–18:51 on the 23rd, 16:57–18:52 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 115 of 115 minutes on the 23rd and 0 of 115 on the 24th.", "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 12851 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Mosul, 1950: Saturday 23 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dattatreyotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Dattatreyotpatti (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1950-12-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-23", "confidence": "determinate" } ], "quote": "In Mosul, Dattātreyotpatti (Datta Jayanti) 1950 falls on Saturday 23 December. Pūrṇimā runs from 11:04 on Sat 23 Dec to 13:23 on Sun 24 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/mosul/festivals/1950/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": "/mosul/festivals/1950/sankashta-chaturthi?on=1950-12-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "99072", "year": 1950, "local_date": "1950-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2817, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1950-12-27T18:50:49+03:00", "utc": "1950-12-27T15:50:49Z", "ms": -599990951393.8304 }, "end": { "local": "1950-12-28T20:00:59+03:00", "utc": "1950-12-28T17:00:59Z", "ms": -599900340555.0535 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1950-12-27T18:50:49+03:00", "utc": "1950-12-27T15:50:49Z", "ms": -599990951393.8304 }, "end": { "local": "1950-12-28T20:00:59+03:00", "utc": "1950-12-28T17:00:59Z", "ms": -599900340555.0535 } }, "kaala": "moonrise", "days": [ { "local_date": "1950-12-27", "window": { "start": { "local": "1950-12-27T19:44:49+03:00", "utc": "1950-12-27T16:44:49Z", "ms": -599987710576.1915 }, "end": { "local": "1950-12-27T19:44:49+03:00", "utc": "1950-12-27T16:44:49Z", "ms": -599987710576.1915 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1950-12-28", "window": { "start": { "local": "1950-12-28T20:47:56+03:00", "utc": "1950-12-28T17:47:56Z", "ms": -599897523582.3259 }, "end": { "local": "1950-12-28T20:47:56+03:00", "utc": "1950-12-28T17:47:56Z", "ms": -599897523582.3259 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:51 on Wed 27 Dec to 20:01 on Thu 28 Dec.", "fact": "1950-12-27T15:50:49Z → 1950-12-28T17:00:59Z" }, { "step": "kaala", "text": "Moonrise is at 19:45 on the 27th and 20:48 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2817 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Mosul, 1950: Wednesday 27 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": "1950-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1950-12-27", "confidence": "determinate" } ], "quote": "In Mosul, Saṅkaṣṭa Caturthī 1950 falls on Wednesday 27 December. Caturthī runs from 18:51 on Wed 27 Dec to 20:01 on Thu 28 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/mosul/festivals/1950/sankashta-chaturthi?on=1950-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }