{ "id": "/erbil/festivals/1986", "place": { "id": "95446", "slug": "erbil", "name": "Erbil", "region": "Iraq", "country": "IQ", "lat": 36.19117, "lon": 44.00943, "elevation_m": 429, "tz": "Asia/Baghdad" }, "year": 1986, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/erbil/festivals/1986/ekadashi?on=1986-01-06", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5389, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-01-06T05:46:06+03:00", "utc": "1986-01-06T02:46:06Z", "ms": 505363565980.992 }, "end": { "local": "1986-01-07T03:07:49+03:00", "utc": "1986-01-07T00:07:49Z", "ms": 505440469394.5625 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-06T05:46:06+03:00", "utc": "1986-01-06T02:46:06Z", "ms": 505363565980.992 }, "end": { "local": "1986-01-07T03:07:49+03:00", "utc": "1986-01-07T00:07:49Z", "ms": 505440469394.5625 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-01-06", "window": { "start": { "local": "1986-01-06T07:15:55+03:00", "utc": "1986-01-06T04:15:55Z", "ms": 505368955264.19214 }, "end": { "local": "1986-01-06T07:15:55+03:00", "utc": "1986-01-06T04:15:55Z", "ms": 505368955264.19214 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-01-07", "window": { "start": { "local": "1986-01-07T07:15:56+03:00", "utc": "1986-01-07T04:15:56Z", "ms": 505455355819.4784 }, "end": { "local": "1986-01-07T07:15:56+03:00", "utc": "1986-01-07T04:15:56Z", "ms": 505455355819.4784 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:46 on Mon 6 Jan to 03:08 on Tue 7 Jan.", "fact": "1986-01-06T02:46:06Z → 1986-01-07T00:07:49Z" }, { "step": "kaala", "text": "Sunrise is at 07:16 on the 6th and 07:16 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 6th and is not on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5389 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Erbil, 1986: Monday 6 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": "1986-01-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-06", "confidence": "determinate" } ], "quote": "In Erbil, Saphalā Ekādaśī 1986 falls on Monday 6 January. Ekādaśī runs from 05:46 on Mon 6 Jan to 03:08 on Tue 7 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-01-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-01-08", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8078, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-01-08T00:14:38+03:00", "utc": "1986-01-07T21:14:38Z", "ms": 505516478235.48224 }, "end": { "local": "1986-01-08T21:13:27+03:00", "utc": "1986-01-08T18:13:27Z", "ms": 505592006585.5688 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-08T00:14:38+03:00", "utc": "1986-01-07T21:14:38Z", "ms": 505516478235.48224 }, "end": { "local": "1986-01-08T21:13:27+03:00", "utc": "1986-01-08T18:13:27Z", "ms": 505592006585.5688 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-01-07", "window": { "start": { "local": "1986-01-07T17:04:31+03:00", "utc": "1986-01-07T14:04:31Z", "ms": 505490671087.05255 }, "end": { "local": "1986-01-07T18:58:02+03:00", "utc": "1986-01-07T15:58:02Z", "ms": 505497482196.0607 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1986-01-08", "window": { "start": { "local": "1986-01-08T17:05:25+03:00", "utc": "1986-01-08T14:05:25Z", "ms": 505577124731.29126 }, "end": { "local": "1986-01-08T18:58:48+03:00", "utc": "1986-01-08T15:58:48Z", "ms": 505583928235.5336 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:15 on Wed 8 Jan to 21:13 on Wed 8 Jan.", "fact": "1986-01-07T21:14:38Z → 1986-01-08T18:13:27Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:05–18:58 on the 7th, 17:05–18:59 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 114 minutes on the 7th and 113 of 113 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 8078 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Wednesday 8 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": "1986-01-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-08", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Wednesday 8 January. Trayodaśī runs from 00:15 on Wed 8 Jan to 21:13 on Wed 8 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-01-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-01-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9191, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-01-08T21:13:27+03:00", "utc": "1986-01-08T18:13:27Z", "ms": 505592006585.5688 }, "end": { "local": "1986-01-09T18:12:38+03:00", "utc": "1986-01-09T15:12:38Z", "ms": 505667557711.1577 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-08T21:13:27+03:00", "utc": "1986-01-08T18:13:27Z", "ms": 505592006585.5688 }, "end": { "local": "1986-01-09T18:12:38+03:00", "utc": "1986-01-09T15:12:38Z", "ms": 505667557711.1577 } }, "kaala": "nishita", "days": [ { "local_date": "1986-01-08", "window": { "start": { "local": "1986-01-08T23:46:38+03:00", "utc": "1986-01-08T20:46:38Z", "ms": 505601197872.2002 }, "end": { "local": "1986-01-09T00:34:38+03:00", "utc": "1986-01-08T21:34:38Z", "ms": 505604077872.2002 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-01-09", "window": { "start": { "local": "1986-01-09T23:47:02+03:00", "utc": "1986-01-09T20:47:02Z", "ms": 505687622488.8795 }, "end": { "local": "1986-01-10T00:35:02+03:00", "utc": "1986-01-09T21:35:02Z", "ms": 505690502488.8795 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:13 on Wed 8 Jan to 18:13 on Thu 9 Jan.", "fact": "1986-01-08T18:13:27Z → 1986-01-09T15:12:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:47–00:35 on the 8th, 23:47–00:35 on the 9th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9191 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Wednesday 8 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": "1986-01-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-08", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Wednesday 8 January. Caturdaśī runs from 21:13 on Wed 8 Jan to 18:13 on Thu 9 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-01-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39037, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-02-12T19:19:06+03:00", "utc": "1986-02-12T16:19:06Z", "ms": 508609145661.87024 } }, "span": { "of": "transit", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 } }, "kaala": "sunset-day", "days": [ { "local_date": "1986-01-14", "window": { "start": { "local": "1986-01-13T17:10:06+03:00", "utc": "1986-01-13T14:10:06Z", "ms": 506009406266.99695 }, "end": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1986-01-15", "window": { "start": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 }, "end": { "local": "1986-01-15T17:12:04+03:00", "utc": "1986-01-15T14:12:04Z", "ms": 506182324067.7596 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1986-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 06:20 on Tue 14 Jan.", "fact": "1986-01-14T03:20:27Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:11, and the day of the 15th ends at 17:12.", "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 39037 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Erbil, 1986: Monday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1986-01-13", "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": "1986-01-12", "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 Erbil, Bhogi 1986 falls on Monday 13 January. It is kept the day before Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 06:20 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-01-13", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8430, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-01-13T09:28:12+03:00", "utc": "1986-01-13T06:28:12Z", "ms": 505981692350.00397 }, "end": { "local": "1986-01-14T08:53:10+03:00", "utc": "1986-01-14T05:53:10Z", "ms": 506065989813.6184 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-13T09:28:12+03:00", "utc": "1986-01-13T06:28:12Z", "ms": 505981692350.00397 }, "end": { "local": "1986-01-14T08:53:10+03:00", "utc": "1986-01-14T05:53:10Z", "ms": 506065989813.6184 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-01-13", "window": { "start": { "local": "1986-01-13T11:48:42+03:00", "utc": "1986-01-13T08:48:42Z", "ms": 505990121929.6743 }, "end": { "local": "1986-01-13T12:36:42+03:00", "utc": "1986-01-13T09:36:42Z", "ms": 505993001929.6743 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-01-14", "window": { "start": { "local": "1986-01-14T11:49:05+03:00", "utc": "1986-01-14T08:49:05Z", "ms": 506076544559.3436 }, "end": { "local": "1986-01-14T12:37:05+03:00", "utc": "1986-01-14T09:37:05Z", "ms": 506079424559.3436 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:28 on Mon 13 Jan to 08:53 on Tue 14 Jan.", "fact": "1986-01-13T06:28:12Z → 1986-01-14T05:53:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 13th, 11:49–12:37 on the 14th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8430 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Monday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-13", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Monday 13 January. Caturthī runs from 09:28 on Mon 13 Jan to 08:53 on Tue 14 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-01-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39037, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-02-12T19:19:06+03:00", "utc": "1986-02-12T16:19:06Z", "ms": 508609145661.87024 } }, "span": { "of": "transit", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 } }, "kaala": "sunset-day", "days": [ { "local_date": "1986-01-14", "window": { "start": { "local": "1986-01-13T17:10:06+03:00", "utc": "1986-01-13T14:10:06Z", "ms": 506009406266.99695 }, "end": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1986-01-15", "window": { "start": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 }, "end": { "local": "1986-01-15T17:12:04+03:00", "utc": "1986-01-15T14:12:04Z", "ms": 506182324067.7596 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 06:20 on Tue 14 Jan.", "fact": "1986-01-14T03:20:27Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:11, and the day of the 15th ends at 17:12.", "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 39037 s" }, { "step": "ruling", "text": "Pongal, Erbil, 1986: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1986-01-14", "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": "1986-01-13", "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 Erbil, Pongal 1986 falls on Tuesday 14 January. The Sun enters Makara at 06:20 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22827, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-02-12T19:19:06+03:00", "utc": "1986-02-12T16:19:06Z", "ms": 508609145661.87024 } }, "span": { "of": "transit", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 } }, "kaala": "civil-day", "days": [ { "local_date": "1986-01-13", "window": { "start": { "local": "1986-01-13T00:00:00+03:00", "utc": "1986-01-12T21:00:00Z", "ms": 505947600000 }, "end": { "local": "1986-01-14T00:00:00+03:00", "utc": "1986-01-13T21:00:00Z", "ms": 506034000000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1986-01-14", "window": { "start": { "local": "1986-01-14T00:00:00+03:00", "utc": "1986-01-13T21:00:00Z", "ms": 506034000000 }, "end": { "local": "1986-01-15T00:00:00+03:00", "utc": "1986-01-14T21:00:00Z", "ms": 506120400000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 06:20 on Tue 14 Jan.", "fact": "1986-01-14T03:20:27Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Erbil.", "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 22827 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Erbil, 1986: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1986-01-13", "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": "1986-01-14", "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 Erbil, Makara Saṅkrānti 1986 falls on Tuesday 14 January. The Sun enters Makara at 06:20 on Tue 14 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39037, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-02-12T19:19:06+03:00", "utc": "1986-02-12T16:19:06Z", "ms": 508609145661.87024 } }, "span": { "of": "transit", "start": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 }, "end": { "local": "1986-01-14T06:20:27+03:00", "utc": "1986-01-14T03:20:27Z", "ms": 506056827360.9726 } }, "kaala": "sunset-day", "days": [ { "local_date": "1986-01-14", "window": { "start": { "local": "1986-01-13T17:10:06+03:00", "utc": "1986-01-13T14:10:06Z", "ms": 506009406266.99695 }, "end": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "1986-01-15", "window": { "start": { "local": "1986-01-14T17:11:05+03:00", "utc": "1986-01-14T14:11:05Z", "ms": 506095864849.7731 }, "end": { "local": "1986-01-15T17:12:04+03:00", "utc": "1986-01-15T14:12:04Z", "ms": 506182324067.7596 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1986-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 06:20 on Tue 14 Jan.", "fact": "1986-01-14T03:20:27Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:11, and the day of the 15th ends at 17:12.", "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 39037 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Erbil, 1986: Wednesday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1986-01-15", "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": "1986-01-14", "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 Erbil, Mattu Pongal 1986 falls on Wednesday 15 January. It is kept the day after Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 06:20 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-01-21", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31671, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-01-20T19:53:52+03:00", "utc": "1986-01-20T16:53:52Z", "ms": 506624032061.96136 }, "end": { "local": "1986-01-21T22:24:16+03:00", "utc": "1986-01-21T19:24:16Z", "ms": 506719456134.6427 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-20T19:53:52+03:00", "utc": "1986-01-20T16:53:52Z", "ms": 506624032061.96136 }, "end": { "local": "1986-01-21T22:24:16+03:00", "utc": "1986-01-21T19:24:16Z", "ms": 506719456134.6427 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-01-21", "window": { "start": { "local": "1986-01-21T07:12:36+03:00", "utc": "1986-01-21T04:12:36Z", "ms": 506664756235.91626 }, "end": { "local": "1986-01-21T07:12:36+03:00", "utc": "1986-01-21T04:12:36Z", "ms": 506664756235.91626 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-01-22", "window": { "start": { "local": "1986-01-22T07:12:07+03:00", "utc": "1986-01-22T04:12:07Z", "ms": 506751127450.45544 }, "end": { "local": "1986-01-22T07:12:07+03:00", "utc": "1986-01-22T04:12:07Z", "ms": 506751127450.45544 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:54 on Mon 20 Jan to 22:24 on Tue 21 Jan.", "fact": "1986-01-20T16:53:52Z → 1986-01-21T19:24:16Z" }, { "step": "kaala", "text": "Sunrise is at 07:13 on the 21st and 07:12 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31671 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Erbil, 1986: Tuesday 21 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": "1986-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-21", "confidence": "determinate" } ], "quote": "In Erbil, Putradā Ekādaśī 1986 falls on Tuesday 21 January. Ekādaśī runs from 19:54 on Mon 20 Jan to 22:24 on Tue 21 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-01-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-01-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19182, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-01-23T00:29:54+03:00", "utc": "1986-01-22T21:29:54Z", "ms": 506813394108.27026 }, "end": { "local": "1986-01-24T02:03:54+03:00", "utc": "1986-01-23T23:03:54Z", "ms": 506905434458.5572 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-01-23T00:29:54+03:00", "utc": "1986-01-22T21:29:54Z", "ms": 506813394108.27026 }, "end": { "local": "1986-01-24T02:03:54+03:00", "utc": "1986-01-23T23:03:54Z", "ms": 506905434458.5572 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-01-22", "window": { "start": { "local": "1986-01-22T17:19:12+03:00", "utc": "1986-01-22T14:19:12Z", "ms": 506787552361.1964 }, "end": { "local": "1986-01-22T19:10:12+03:00", "utc": "1986-01-22T16:10:12Z", "ms": 506794211621.7885 } }, "covered_min": 0, "window_min": 111, "qualifies": false }, { "local_date": "1986-01-23", "window": { "start": { "local": "1986-01-23T17:20:15+03:00", "utc": "1986-01-23T14:20:15Z", "ms": 506874014982.9854 }, "end": { "local": "1986-01-23T19:11:02+03:00", "utc": "1986-01-23T16:11:02Z", "ms": 506880661565.9502 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:30 on Thu 23 Jan to 02:04 on Fri 24 Jan.", "fact": "1986-01-22T21:29:54Z → 1986-01-23T23:03:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–19:10 on the 22nd, 17:20–19:11 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 111 minutes on the 22nd and 111 of 111 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 19182 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Thursday 23 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": "1986-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-23", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Thursday 23 January. Trayodaśī runs from 00:30 on Thu 23 Jan to 02:04 on Fri 24 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-01-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-01-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14593, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-01-29T02:13:37+03:00", "utc": "1986-01-28T23:13:37Z", "ms": 507338017137.3118 }, "end": { "local": "1986-01-30T01:09:01+03:00", "utc": "1986-01-29T22:09:01Z", "ms": 507420540700.7934 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-01-29T02:13:37+03:00", "utc": "1986-01-28T23:13:37Z", "ms": 507338017137.3118 }, "end": { "local": "1986-01-30T01:09:01+03:00", "utc": "1986-01-29T22:09:01Z", "ms": 507420540700.7934 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-01-28", "window": { "start": { "local": "1986-01-28T19:59:42+03:00", "utc": "1986-01-28T16:59:42Z", "ms": 507315582296.3219 }, "end": { "local": "1986-01-28T19:59:42+03:00", "utc": "1986-01-28T16:59:42Z", "ms": 507315582296.3219 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-01-29", "window": { "start": { "local": "1986-01-29T21:05:48+03:00", "utc": "1986-01-29T18:05:48Z", "ms": 507405947922.28827 }, "end": { "local": "1986-01-29T21:05:48+03:00", "utc": "1986-01-29T18:05:48Z", "ms": 507405947922.28827 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:14 on Wed 29 Jan to 01:09 on Thu 30 Jan.", "fact": "1986-01-28T23:13:37Z → 1986-01-29T22:09:01Z" }, { "step": "kaala", "text": "Moonrise is at 20:00 on the 28th and 21:06 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14593 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Wednesday 29 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": "1986-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-01-29", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Wednesday 29 January. Caturthī runs from 02:14 on Wed 29 Jan to 01:09 on Thu 30 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-02-05", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18282, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-02-04T14:25:17+03:00", "utc": "1986-02-04T11:25:17Z", "ms": 507900317198.743 }, "end": { "local": "1986-02-05T12:07:04+03:00", "utc": "1986-02-05T09:07:04Z", "ms": 507978423999.30164 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-04T14:25:17+03:00", "utc": "1986-02-04T11:25:17Z", "ms": 507900317198.743 }, "end": { "local": "1986-02-05T12:07:04+03:00", "utc": "1986-02-05T09:07:04Z", "ms": 507978423999.30164 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-02-04", "window": { "start": { "local": "1986-02-04T07:03:14+03:00", "utc": "1986-02-04T04:03:14Z", "ms": 507873794458.9752 }, "end": { "local": "1986-02-04T07:03:14+03:00", "utc": "1986-02-04T04:03:14Z", "ms": 507873794458.9752 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-02-05", "window": { "start": { "local": "1986-02-05T07:02:22+03:00", "utc": "1986-02-05T04:02:22Z", "ms": 507960142219.5364 }, "end": { "local": "1986-02-05T07:02:22+03:00", "utc": "1986-02-05T04:02:22Z", "ms": 507960142219.5364 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:25 on Tue 4 Feb to 12:07 on Wed 5 Feb.", "fact": "1986-02-04T11:25:17Z → 1986-02-05T09:07:04Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 4th and 07:02 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18282 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Erbil, 1986: Wednesday 5 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": "1986-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-05", "confidence": "determinate" } ], "quote": "In Erbil, Ṣaṭtilā Ekādaśī 1986 falls on Wednesday 5 February. Ekādaśī runs from 14:25 on Tue 4 Feb to 12:07 on Wed 5 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-02-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28012, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-02-06T09:48:11+03:00", "utc": "1986-02-06T06:48:11Z", "ms": 508056491080.682 }, "end": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-06T09:48:11+03:00", "utc": "1986-02-06T06:48:11Z", "ms": 508056491080.682 }, "end": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-02-06", "window": { "start": { "local": "1986-02-06T17:35:03+03:00", "utc": "1986-02-06T14:35:03Z", "ms": 508084502740.4627 }, "end": { "local": "1986-02-06T19:22:27+03:00", "utc": "1986-02-06T16:22:27Z", "ms": 508090946825.5783 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1986-02-07", "window": { "start": { "local": "1986-02-07T17:36:06+03:00", "utc": "1986-02-07T14:36:06Z", "ms": 508170965827.3973 }, "end": { "local": "1986-02-07T19:23:14+03:00", "utc": "1986-02-07T16:23:14Z", "ms": 508177393961.41895 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:48 on Thu 6 Feb to 07:35 on Fri 7 Feb.", "fact": "1986-02-06T06:48:11Z → 1986-02-07T04:34:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:35–19:22 on the 6th, 17:36–19:23 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 107 of 107 minutes on the 6th and 0 of 107 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 28012 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Thursday 6 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": "1986-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-06", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Thursday 6 February. Trayodaśī runs from 09:48 on Thu 6 Feb to 07:35 on Fri 7 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-02-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-02-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17559, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 }, "end": { "local": "1986-02-08T05:34:31+03:00", "utc": "1986-02-08T02:34:31Z", "ms": 508214070743.4959 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 }, "end": { "local": "1986-02-08T05:34:31+03:00", "utc": "1986-02-08T02:34:31Z", "ms": 508214070743.4959 } }, "kaala": "nishita", "days": [ { "local_date": "1986-02-06", "window": { "start": { "local": "1986-02-06T23:53:48+03:00", "utc": "1986-02-06T20:53:48Z", "ms": 508107228059.64624 }, "end": { "local": "1986-02-07T00:41:48+03:00", "utc": "1986-02-06T21:41:48Z", "ms": 508110108059.64624 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-02-07", "window": { "start": { "local": "1986-02-07T23:53:51+03:00", "utc": "1986-02-07T20:53:51Z", "ms": 508193631329.9785 }, "end": { "local": "1986-02-08T00:41:51+03:00", "utc": "1986-02-07T21:41:51Z", "ms": 508196511329.9785 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:35 on Fri 7 Feb to 05:35 on Sat 8 Feb.", "fact": "1986-02-07T04:34:51Z → 1986-02-08T02:34:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:54–00:42 on the 6th, 23:54–00:42 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17559 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Friday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-07", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Friday 7 February. Caturdaśī runs from 07:35 on Fri 7 Feb to 05:35 on Sat 8 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-02-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1322, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 }, "end": { "local": "1986-02-08T05:34:31+03:00", "utc": "1986-02-08T02:34:31Z", "ms": 508214070743.4959 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-07T07:34:51+03:00", "utc": "1986-02-07T04:34:51Z", "ms": 508134891401.40814 }, "end": { "local": "1986-02-08T05:34:31+03:00", "utc": "1986-02-08T02:34:31Z", "ms": 508214070743.4959 } }, "kaala": "arunodaya", "days": [ { "local_date": "1986-02-07", "window": { "start": { "local": "1986-02-07T05:13:09+03:00", "utc": "1986-02-07T02:13:09Z", "ms": 508126389293.7141 }, "end": { "local": "1986-02-07T07:00:33+03:00", "utc": "1986-02-07T04:00:33Z", "ms": 508132833378.8297 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1986-02-08", "window": { "start": { "local": "1986-02-08T05:12:29+03:00", "utc": "1986-02-08T02:12:29Z", "ms": 508212748698.538 }, "end": { "local": "1986-02-08T06:59:37+03:00", "utc": "1986-02-08T03:59:37Z", "ms": 508219176832.5597 } }, "covered_min": 22, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:35 on Fri 7 Feb to 05:35 on Sat 8 Feb.", "fact": "1986-02-07T04:34:51Z → 1986-02-08T02:34:31Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:13–07:01 on the 7th, 05:12–07:00 on the 8th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 107 minutes on the 7th and 22 of 107 on the 8th.", "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 1322 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Erbil, 1986: Saturday 8 February.", "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": "1986-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-08", "confidence": "determinate" } ], "quote": "In Erbil, Yama Tarpaṇa 1986 falls on Saturday 8 February. Caturdaśī runs from 07:35 on Fri 7 Feb to 05:35 on Sat 8 Feb and covers 22 of 107 minutes of aruṇodaya that dawn.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31169, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-02-12T02:21:28+03:00", "utc": "1986-02-11T23:21:28Z", "ms": 508548088457.5811 }, "end": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-12T02:21:28+03:00", "utc": "1986-02-11T23:21:28Z", "ms": 508548088457.5811 }, "end": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-02-12", "window": { "start": { "local": "1986-02-12T11:54:28+03:00", "utc": "1986-02-12T08:54:28Z", "ms": 508582467576.0678 }, "end": { "local": "1986-02-12T12:42:28+03:00", "utc": "1986-02-12T09:42:28Z", "ms": 508585347576.0678 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-02-13", "window": { "start": { "local": "1986-02-13T11:54:27+03:00", "utc": "1986-02-13T08:54:27Z", "ms": 508668866820.0095 }, "end": { "local": "1986-02-13T12:42:27+03:00", "utc": "1986-02-13T09:42:27Z", "ms": 508671746820.0095 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:21 on Wed 12 Feb to 03:15 on Thu 13 Feb.", "fact": "1986-02-11T23:21:28Z → 1986-02-13T00:14:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 12th, 11:54–12:42 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31169 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Erbil, 1986: Wednesday 12 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-12", "confidence": "determinate" } ], "quote": "In Erbil, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1986 falls on Wednesday 12 February. Caturthī runs from 02:21 on Wed 12 Feb to 03:15 on Thu 13 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24910, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-02-12T02:21:28+03:00", "utc": "1986-02-11T23:21:28Z", "ms": 508548088457.5811 }, "end": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-12T02:21:28+03:00", "utc": "1986-02-11T23:21:28Z", "ms": 508548088457.5811 }, "end": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-02-11", "window": { "start": { "local": "1986-02-11T17:40:16+03:00", "utc": "1986-02-11T14:40:16Z", "ms": 508516816092.856 }, "end": { "local": "1986-02-11T19:26:19+03:00", "utc": "1986-02-11T16:26:19Z", "ms": 508523178896.4084 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1986-02-12", "window": { "start": { "local": "1986-02-12T17:41:18+03:00", "utc": "1986-02-12T14:41:18Z", "ms": 508603278032.6369 }, "end": { "local": "1986-02-12T19:27:04+03:00", "utc": "1986-02-12T16:27:04Z", "ms": 508609624155.4177 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:21 on Wed 12 Feb to 03:15 on Thu 13 Feb.", "fact": "1986-02-11T23:21:28Z → 1986-02-13T00:14:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:40–19:26 on the 11th, 17:41–19:27 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 106 minutes on the 11th and 106 of 106 on the 12th.", "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 24910 s" }, { "step": "ruling", "text": "Tila Caturthī, Erbil, 1986: Wednesday 12 February.", "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": "1986-02-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-12", "confidence": "determinate" } ], "quote": "In Erbil, Tila Caturthī 1986 falls on Wednesday 12 February. Caturthī runs from 02:21 on Wed 12 Feb to 03:15 on Thu 13 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25423, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "end": { "local": "1986-02-14T04:50:42+03:00", "utc": "1986-02-14T01:50:42Z", "ms": 508729841963.9339 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "end": { "local": "1986-02-14T04:50:42+03:00", "utc": "1986-02-14T01:50:42Z", "ms": 508729841963.9339 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-02-13", "window": { "start": { "local": "1986-02-13T11:54:27+03:00", "utc": "1986-02-13T08:54:27Z", "ms": 508668866820.0095 }, "end": { "local": "1986-02-13T12:42:27+03:00", "utc": "1986-02-13T09:42:27Z", "ms": 508671746820.0095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-02-14", "window": { "start": { "local": "1986-02-14T11:54:25+03:00", "utc": "1986-02-14T08:54:25Z", "ms": 508755265296.8331 }, "end": { "local": "1986-02-14T12:42:25+03:00", "utc": "1986-02-14T09:42:25Z", "ms": 508758145296.8331 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:15 on Thu 13 Feb to 04:51 on Fri 14 Feb.", "fact": "1986-02-13T00:14:58Z → 1986-02-14T01:50:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 13th, 11:54–12:42 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25423 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Erbil, 1986: Thursday 13 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-13", "confidence": "determinate" } ], "quote": "In Erbil, Śrī Pañcamī 1986 falls on Thursday 13 February. Pañcamī runs from 03:15 on Thu 13 Feb to 04:51 on Fri 14 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25423, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "end": { "local": "1986-02-14T04:50:42+03:00", "utc": "1986-02-14T01:50:42Z", "ms": 508729841963.9339 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-13T03:14:58+03:00", "utc": "1986-02-13T00:14:58Z", "ms": 508637698288.9156 }, "end": { "local": "1986-02-14T04:50:42+03:00", "utc": "1986-02-14T01:50:42Z", "ms": 508729841963.9339 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-02-13", "window": { "start": { "local": "1986-02-13T11:54:27+03:00", "utc": "1986-02-13T08:54:27Z", "ms": 508668866820.0095 }, "end": { "local": "1986-02-13T12:42:27+03:00", "utc": "1986-02-13T09:42:27Z", "ms": 508671746820.0095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-02-14", "window": { "start": { "local": "1986-02-14T11:54:25+03:00", "utc": "1986-02-14T08:54:25Z", "ms": 508755265296.8331 }, "end": { "local": "1986-02-14T12:42:25+03:00", "utc": "1986-02-14T09:42:25Z", "ms": 508758145296.8331 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:15 on Thu 13 Feb to 04:51 on Fri 14 Feb.", "fact": "1986-02-13T00:14:58Z → 1986-02-14T01:50:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 13th, 11:54–12:42 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25423 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Erbil, 1986: Thursday 13 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-13", "confidence": "determinate" } ], "quote": "In Erbil, Vasanta Pañcamī 1986 falls on Thursday 13 February. Pañcamī runs from 03:15 on Thu 13 Feb to 04:51 on Fri 14 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 537, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-02-15T07:01:21+03:00", "utc": "1986-02-15T04:01:21Z", "ms": 508824080993.4906 }, "end": { "local": "1986-02-16T09:34:43+03:00", "utc": "1986-02-16T06:34:43Z", "ms": 508919683067.2104 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-15T07:01:21+03:00", "utc": "1986-02-15T04:01:21Z", "ms": 508824080993.4906 }, "end": { "local": "1986-02-16T09:34:43+03:00", "utc": "1986-02-16T06:34:43Z", "ms": 508919683067.2104 } }, "kaala": "arunodaya", "days": [ { "local_date": "1986-02-15", "window": { "start": { "local": "1986-02-15T05:07:12+03:00", "utc": "1986-02-15T02:07:12Z", "ms": 508817231562.4862 }, "end": { "local": "1986-02-15T06:52:24+03:00", "utc": "1986-02-15T03:52:24Z", "ms": 508823543950.4906 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "1986-02-16", "window": { "start": { "local": "1986-02-16T05:06:22+03:00", "utc": "1986-02-16T02:06:22Z", "ms": 508903581831.72284 }, "end": { "local": "1986-02-16T06:51:17+03:00", "utc": "1986-02-16T03:51:17Z", "ms": 508909877177.78894 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:01 on Sat 15 Feb to 09:35 on Sun 16 Feb.", "fact": "1986-02-15T04:01:21Z → 1986-02-16T06:34:43Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:07–06:52 on the 15th, 05:06–06:51 on the 16th.", "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 105 minutes on the 15th and 105 of 105 on the 16th.", "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 537 s" }, { "step": "ruling", "text": "Ratha Saptamī, Erbil, 1986: Sunday 16 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-16", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-16", "confidence": "determinate" } ], "quote": "In Erbil, Ratha Saptamī 1986 falls on Sunday 16 February. Saptamī runs from 07:01 on Sat 15 Feb to 09:35 on Sun 16 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-02-20", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36328, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-02-19T16:53:18+03:00", "utc": "1986-02-19T13:53:18Z", "ms": 509205198483.1311 }, "end": { "local": "1986-02-20T18:25:47+03:00", "utc": "1986-02-20T15:25:47Z", "ms": 509297147008.1221 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-19T16:53:18+03:00", "utc": "1986-02-19T13:53:18Z", "ms": 509205198483.1311 }, "end": { "local": "1986-02-20T18:25:47+03:00", "utc": "1986-02-20T15:25:47Z", "ms": 509297147008.1221 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-02-19", "window": { "start": { "local": "1986-02-19T06:47:50+03:00", "utc": "1986-02-19T03:47:50Z", "ms": 509168870170.91895 }, "end": { "local": "1986-02-19T06:47:50+03:00", "utc": "1986-02-19T03:47:50Z", "ms": 509168870170.91895 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-02-20", "window": { "start": { "local": "1986-02-20T06:46:39+03:00", "utc": "1986-02-20T03:46:39Z", "ms": 509255199051.101 }, "end": { "local": "1986-02-20T06:46:39+03:00", "utc": "1986-02-20T03:46:39Z", "ms": 509255199051.101 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:53 on Wed 19 Feb to 18:26 on Thu 20 Feb.", "fact": "1986-02-19T13:53:18Z → 1986-02-20T15:25:47Z" }, { "step": "kaala", "text": "Sunrise is at 06:48 on the 19th and 06:47 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 36328 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Erbil, 1986: Thursday 20 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": "1986-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-20", "confidence": "determinate" } ], "quote": "In Erbil, Jayā Ekādaśī 1986 falls on Thursday 20 February. Ekādaśī runs from 16:53 on Wed 19 Feb to 18:26 on Thu 20 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-02-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20626, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-02-20T18:25:47+03:00", "utc": "1986-02-20T15:25:47Z", "ms": 509297147008.1221 }, "end": { "local": "1986-02-21T19:18:04+03:00", "utc": "1986-02-21T16:18:04Z", "ms": 509386684197.9343 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-20T18:25:47+03:00", "utc": "1986-02-20T15:25:47Z", "ms": 509297147008.1221 }, "end": { "local": "1986-02-21T19:18:04+03:00", "utc": "1986-02-21T16:18:04Z", "ms": 509386684197.9343 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-02-20", "window": { "start": { "local": "1986-02-20T11:54:01+03:00", "utc": "1986-02-20T08:54:01Z", "ms": 509273640680.9026 }, "end": { "local": "1986-02-20T12:42:01+03:00", "utc": "1986-02-20T09:42:01Z", "ms": 509276520680.9026 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-02-21", "window": { "start": { "local": "1986-02-21T11:53:54+03:00", "utc": "1986-02-21T08:53:54Z", "ms": 509360034126.9366 }, "end": { "local": "1986-02-21T12:41:54+03:00", "utc": "1986-02-21T09:41:54Z", "ms": 509362914126.9366 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:26 on Thu 20 Feb to 19:18 on Fri 21 Feb.", "fact": "1986-02-20T15:25:47Z → 1986-02-21T16:18:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 20th, 11:54–12:42 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 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20626 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Erbil, 1986: Friday 21 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-02-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-21", "confidence": "determinate" } ], "quote": "In Erbil, Bhīṣma Dvādaśī 1986 falls on Friday 21 February. Dvādaśī runs from 18:26 on Thu 20 Feb to 19:18 on Fri 21 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-02-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-22", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 297, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-02-21T19:18:04+03:00", "utc": "1986-02-21T16:18:04Z", "ms": 509386684197.9343 }, "end": { "local": "1986-02-22T19:29:17+03:00", "utc": "1986-02-22T16:29:17Z", "ms": 509473756531.96704 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-21T19:18:04+03:00", "utc": "1986-02-21T16:18:04Z", "ms": 509386684197.9343 }, "end": { "local": "1986-02-22T19:29:17+03:00", "utc": "1986-02-22T16:29:17Z", "ms": 509473756531.96704 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-02-21", "window": { "start": { "local": "1986-02-21T17:50:21+03:00", "utc": "1986-02-21T14:50:21Z", "ms": 509381421324.6402 }, "end": { "local": "1986-02-21T19:33:32+03:00", "utc": "1986-02-21T16:33:32Z", "ms": 509387612326.64526 } }, "covered_min": 15, "window_min": 103, "qualifies": true }, { "local_date": "1986-02-22", "window": { "start": { "local": "1986-02-22T17:51:20+03:00", "utc": "1986-02-22T14:51:20Z", "ms": 509467879991.0716 }, "end": { "local": "1986-02-22T19:34:13+03:00", "utc": "1986-02-22T16:34:13Z", "ms": 509474053301.18805 } }, "covered_min": 98, "window_min": 103, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:18 on Fri 21 Feb to 19:29 on Sat 22 Feb.", "fact": "1986-02-21T16:18:04Z → 1986-02-22T16:29:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:34 on the 21st, 17:51–19:34 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 15 of 103 minutes on the 21st and 98 of 103 on the 22nd.", "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 297 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Saturday 22 February.", "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": "1986-02-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-22", "confidence": "boundary" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Saturday 22 February. Trayodaśī runs from 19:18 on Fri 21 Feb to 19:29 on Sat 22 Feb and covers 98 of 103 minutes of pradoṣa that evening. It also reaches the previous evening for 15 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 57 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-02-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19243, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-02-23T19:02:14+03:00", "utc": "1986-02-23T16:02:14Z", "ms": 509558533842.1679 }, "end": { "local": "1986-02-24T18:02:14+03:00", "utc": "1986-02-24T15:02:14Z", "ms": 509641333641.87506 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1986-02-23T19:02:14+03:00", "utc": "1986-02-23T16:02:14Z", "ms": 509558533842.1679 }, "end": { "local": "1986-02-24T18:02:14+03:00", "utc": "1986-02-24T15:02:14Z", "ms": 509641333641.87506 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-02-23", "window": { "start": { "local": "1986-02-23T11:53:39+03:00", "utc": "1986-02-23T08:53:39Z", "ms": 509532819064.58435 }, "end": { "local": "1986-02-23T12:41:39+03:00", "utc": "1986-02-23T09:41:39Z", "ms": 509535699064.58435 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-02-24", "window": { "start": { "local": "1986-02-24T11:53:31+03:00", "utc": "1986-02-24T08:53:31Z", "ms": 509619210593.92773 }, "end": { "local": "1986-02-24T12:41:31+03:00", "utc": "1986-02-24T09:41:31Z", "ms": 509622090593.92773 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:02 on Sun 23 Feb to 18:02 on Mon 24 Feb.", "fact": "1986-02-23T16:02:14Z → 1986-02-24T15:02:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 23rd, 11:54–12:42 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19243 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Erbil, 1986: Monday 24 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": "1986-02-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-24", "confidence": "determinate" } ], "quote": "In Erbil, Māghī Pūrṇimā 1986 falls on Monday 24 February. Pūrṇimā runs from 19:02 on Sun 23 Feb to 18:02 on Mon 24 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-02-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29948, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-02-27T12:50:50+03:00", "utc": "1986-02-27T09:50:50Z", "ms": 509881849915.1669 }, "end": { "local": "1986-02-28T10:44:16+03:00", "utc": "1986-02-28T07:44:16Z", "ms": 509960655556.1134 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-02-27T12:50:50+03:00", "utc": "1986-02-27T09:50:50Z", "ms": 509881849915.1669 }, "end": { "local": "1986-02-28T10:44:16+03:00", "utc": "1986-02-28T07:44:16Z", "ms": 509960655556.1134 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-02-27", "window": { "start": { "local": "1986-02-27T21:09:58+03:00", "utc": "1986-02-27T18:09:58Z", "ms": 509911797948.5621 }, "end": { "local": "1986-02-27T21:09:58+03:00", "utc": "1986-02-27T18:09:58Z", "ms": 509911797948.5621 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-02-28", "window": { "start": { "local": "1986-02-28T22:20:26+03:00", "utc": "1986-02-28T19:20:26Z", "ms": 510002425820.1812 }, "end": { "local": "1986-02-28T22:20:26+03:00", "utc": "1986-02-28T19:20:26Z", "ms": 510002425820.1812 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:51 on Thu 27 Feb to 10:44 on Fri 28 Feb.", "fact": "1986-02-27T09:50:50Z → 1986-02-28T07:44:16Z" }, { "step": "kaala", "text": "Moonrise is at 21:10 on the 27th and 22:20 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 29948 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Thursday 27 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": "1986-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-02-27", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Thursday 27 February. Caturthī runs from 12:51 on Thu 27 Feb to 10:44 on Fri 28 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-03-06", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28413, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-03-05T22:35:01+03:00", "utc": "1986-03-05T19:35:01Z", "ms": 510435300633.61395 }, "end": { "local": "1986-03-06T20:59:35+03:00", "utc": "1986-03-06T17:59:35Z", "ms": 510515975352.566 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-05T22:35:01+03:00", "utc": "1986-03-05T19:35:01Z", "ms": 510435300633.61395 }, "end": { "local": "1986-03-06T20:59:35+03:00", "utc": "1986-03-06T17:59:35Z", "ms": 510515975352.566 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-03-06", "window": { "start": { "local": "1986-03-06T06:28:34+03:00", "utc": "1986-03-06T03:28:34Z", "ms": 510463713712.9667 }, "end": { "local": "1986-03-06T06:28:34+03:00", "utc": "1986-03-06T03:28:34Z", "ms": 510463713712.9667 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-03-07", "window": { "start": { "local": "1986-03-07T06:27:11+03:00", "utc": "1986-03-07T03:27:11Z", "ms": 510550031113.7348 }, "end": { "local": "1986-03-07T06:27:11+03:00", "utc": "1986-03-07T03:27:11Z", "ms": 510550031113.7348 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:35 on Wed 5 Mar to 21:00 on Thu 6 Mar.", "fact": "1986-03-05T19:35:01Z → 1986-03-06T17:59:35Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 6th and 06:27 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 6th and is not on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28413 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Erbil, 1986: Thursday 6 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": "1986-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-06", "confidence": "determinate" } ], "quote": "In Erbil, Vijayā Ekādaśī 1986 falls on Thursday 6 March. Ekādaśī runs from 22:35 on Wed 5 Mar to 21:00 on Thu 6 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18767, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-03-08T18:37:39+03:00", "utc": "1986-03-08T15:37:39Z", "ms": 510680259361.5549 }, "end": { "local": "1986-03-09T18:00:15+03:00", "utc": "1986-03-09T15:00:15Z", "ms": 510764414739.7569 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-08T18:37:39+03:00", "utc": "1986-03-08T15:37:39Z", "ms": 510680259361.5549 }, "end": { "local": "1986-03-09T18:00:15+03:00", "utc": "1986-03-09T15:00:15Z", "ms": 510764414739.7569 } }, "kaala": "nishita", "days": [ { "local_date": "1986-03-08", "window": { "start": { "local": "1986-03-08T23:50:26+03:00", "utc": "1986-03-08T20:50:26Z", "ms": 510699026252.15283 }, "end": { "local": "1986-03-09T00:38:26+03:00", "utc": "1986-03-08T21:38:26Z", "ms": 510701906252.15283 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-03-09", "window": { "start": { "local": "1986-03-09T23:50:11+03:00", "utc": "1986-03-09T20:50:11Z", "ms": 510785411315.1299 }, "end": { "local": "1986-03-10T00:38:11+03:00", "utc": "1986-03-09T21:38:11Z", "ms": 510788291315.1299 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:38 on Sat 8 Mar to 18:00 on Sun 9 Mar.", "fact": "1986-03-08T15:37:39Z → 1986-03-09T15:00:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 8th, 23:50–00:38 on the 9th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 18767 s" }, { "step": "ruling", "text": "Mahāśivarātri, Erbil, 1986: Saturday 8 March.", "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": "1986-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-08", "confidence": "determinate" } ], "quote": "In Erbil, Mahāśivarātri 1986 falls on Saturday 8 March. Caturdaśī runs from 18:38 on Sat 8 Mar to 18:00 on Sun 9 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-03-08", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-08", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 210, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-03-07T19:39:02+03:00", "utc": "1986-03-07T16:39:02Z", "ms": 510597542030.0529 }, "end": { "local": "1986-03-08T18:37:39+03:00", "utc": "1986-03-08T15:37:39Z", "ms": 510680259361.5549 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-07T19:39:02+03:00", "utc": "1986-03-07T16:39:02Z", "ms": 510597542030.0529 }, "end": { "local": "1986-03-08T18:37:39+03:00", "utc": "1986-03-08T15:37:39Z", "ms": 510680259361.5549 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-03-07", "window": { "start": { "local": "1986-03-07T18:03:34+03:00", "utc": "1986-03-07T15:03:34Z", "ms": 510591813657.73395 }, "end": { "local": "1986-03-07T19:42:32+03:00", "utc": "1986-03-07T16:42:32Z", "ms": 510597751570.5463 } }, "covered_min": 3, "window_min": 99, "qualifies": true }, { "local_date": "1986-03-08", "window": { "start": { "local": "1986-03-08T18:04:28+03:00", "utc": "1986-03-08T15:04:28Z", "ms": 510678268092.55035 }, "end": { "local": "1986-03-08T19:43:08+03:00", "utc": "1986-03-08T16:43:08Z", "ms": 510684187601.7777 } }, "covered_min": 33, "window_min": 99, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:39 on Fri 7 Mar to 18:38 on Sat 8 Mar.", "fact": "1986-03-07T16:39:02Z → 1986-03-08T15:37:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:04–19:43 on the 7th, 18:04–19:43 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 3 of 99 minutes on the 7th and 33 of 99 on the 8th.", "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 210 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Saturday 8 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": "1986-03-08", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-07", "confidence": "boundary" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Saturday 8 March. Trayodaśī runs from 19:39 on Fri 7 Mar to 18:38 on Sat 8 Mar and covers 33 of 99 minutes of pradoṣa that evening. It also reaches the previous evening for 3 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 30 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-03-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-03-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29413, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-03-13T20:48:04+03:00", "utc": "1986-03-13T17:48:04Z", "ms": 511120084207.61725 }, "end": { "local": "1986-03-14T22:52:05+03:00", "utc": "1986-03-14T19:52:05Z", "ms": 511213925040.24536 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-13T20:48:04+03:00", "utc": "1986-03-13T17:48:04Z", "ms": 511120084207.61725 }, "end": { "local": "1986-03-14T22:52:05+03:00", "utc": "1986-03-14T19:52:05Z", "ms": 511213925040.24536 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-03-13", "window": { "start": { "local": "1986-03-13T11:49:51+03:00", "utc": "1986-03-13T08:49:51Z", "ms": 511087791098.68604 }, "end": { "local": "1986-03-13T12:37:51+03:00", "utc": "1986-03-13T09:37:51Z", "ms": 511090671098.68604 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-03-14", "window": { "start": { "local": "1986-03-14T11:49:35+03:00", "utc": "1986-03-14T08:49:35Z", "ms": 511174174773.5414 }, "end": { "local": "1986-03-14T12:37:35+03:00", "utc": "1986-03-14T09:37:35Z", "ms": 511177054773.5414 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:48 on Thu 13 Mar to 22:52 on Fri 14 Mar.", "fact": "1986-03-13T17:48:04Z → 1986-03-14T19:52:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 13th, 11:50–12:38 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29413 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Friday 14 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": "1986-03-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-14", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Friday 14 March. Caturthī runs from 20:48 on Thu 13 Mar to 22:52 on Fri 14 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-03-22", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19214, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-03-21T11:27:28+03:00", "utc": "1986-03-21T08:27:28Z", "ms": 511777648276.1345 }, "end": { "local": "1986-03-22T11:44:21+03:00", "utc": "1986-03-22T08:44:21Z", "ms": 511865060832.2471 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-21T11:27:28+03:00", "utc": "1986-03-21T08:27:28Z", "ms": 511777648276.1345 }, "end": { "local": "1986-03-22T11:44:21+03:00", "utc": "1986-03-22T08:44:21Z", "ms": 511865060832.2471 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-03-21", "window": { "start": { "local": "1986-03-21T06:07:14+03:00", "utc": "1986-03-21T03:07:14Z", "ms": 511758434063.214 }, "end": { "local": "1986-03-21T06:07:14+03:00", "utc": "1986-03-21T03:07:14Z", "ms": 511758434063.214 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-03-22", "window": { "start": { "local": "1986-03-22T06:05:47+03:00", "utc": "1986-03-22T03:05:47Z", "ms": 511844746819.8493 }, "end": { "local": "1986-03-22T06:05:47+03:00", "utc": "1986-03-22T03:05:47Z", "ms": 511844746819.8493 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:27 on Fri 21 Mar to 11:44 on Sat 22 Mar.", "fact": "1986-03-21T08:27:28Z → 1986-03-22T08:44:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:07 on the 21st and 06:06 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 19214 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Erbil, 1986: Saturday 22 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": "1986-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-22", "confidence": "determinate" } ], "quote": "In Erbil, Āmalakī Ekādaśī 1986 falls on Saturday 22 March. Ekādaśī runs from 11:27 on Fri 21 Mar to 11:44 on Sat 22 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-03-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-03-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25314, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-03-23T11:15:42+03:00", "utc": "1986-03-23T08:15:42Z", "ms": 511949742324.7893 }, "end": { "local": "1986-03-24T10:04:53+03:00", "utc": "1986-03-24T07:04:53Z", "ms": 512031893332.966 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-23T11:15:42+03:00", "utc": "1986-03-23T08:15:42Z", "ms": 511949742324.7893 }, "end": { "local": "1986-03-24T10:04:53+03:00", "utc": "1986-03-24T07:04:53Z", "ms": 512031893332.966 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-03-23", "window": { "start": { "local": "1986-03-23T18:17:37+03:00", "utc": "1986-03-23T15:17:37Z", "ms": 511975056516.01 }, "end": { "local": "1986-03-23T19:51:39+03:00", "utc": "1986-03-23T16:51:39Z", "ms": 511980698600.5396 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1986-03-24", "window": { "start": { "local": "1986-03-24T18:18:28+03:00", "utc": "1986-03-24T15:18:28Z", "ms": 512061507602.4939 }, "end": { "local": "1986-03-24T19:52:11+03:00", "utc": "1986-03-24T16:52:11Z", "ms": 512067131226.94556 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:16 on Sun 23 Mar to 10:05 on Mon 24 Mar.", "fact": "1986-03-23T08:15:42Z → 1986-03-24T07:04:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:52 on the 23rd, 18:18–19:52 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 23rd and 0 of 94 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25314 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Sunday 23 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": "1986-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-23", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Sunday 23 March. Trayodaśī runs from 11:16 on Sun 23 Mar to 10:05 on Mon 24 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-03-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27237, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-03-25T08:17:47+03:00", "utc": "1986-03-25T05:17:47Z", "ms": 512111866728.46625 }, "end": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-25T08:17:47+03:00", "utc": "1986-03-25T05:17:47Z", "ms": 512111866728.46625 }, "end": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 } }, "kaala": "sayahna", "days": [ { "local_date": "1986-03-25", "window": { "start": { "local": "1986-03-25T15:51:44+03:00", "utc": "1986-03-25T12:51:44Z", "ms": 512139103816.9061 }, "end": { "local": "1986-03-25T18:19:19+03:00", "utc": "1986-03-25T15:19:19Z", "ms": 512147958574.6623 } }, "covered_min": 148, "window_min": 148, "qualifies": true }, { "local_date": "1986-03-26", "window": { "start": { "local": "1986-03-26T15:52:07+03:00", "utc": "1986-03-26T12:52:07Z", "ms": 512225527048.39246 }, "end": { "local": "1986-03-26T18:20:09+03:00", "utc": "1986-03-26T15:20:09Z", "ms": 512234409449.45166 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:18 on Tue 25 Mar to 06:02 on Wed 26 Mar.", "fact": "1986-03-25T05:17:47Z → 1986-03-26T03:01:47Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:52–18:19 on the 25th, 15:52–18:20 on the 26th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 148 of 148 minutes on the 25th and 0 of 148 on the 26th.", "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 27237 s" }, { "step": "ruling", "text": "Holikā Dahana, Erbil, 1986: Tuesday 25 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": "1986-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-25", "confidence": "determinate" } ], "quote": "In Erbil, Holikā Dahana 1986 falls on Tuesday 25 March. Pūrṇimā runs from 08:18 on Tue 25 Mar to 06:02 on Wed 26 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27237, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-03-25T08:17:47+03:00", "utc": "1986-03-25T05:17:47Z", "ms": 512111866728.46625 }, "end": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1986-03-25T08:17:47+03:00", "utc": "1986-03-25T05:17:47Z", "ms": 512111866728.46625 }, "end": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 } }, "kaala": "sayahna", "days": [ { "local_date": "1986-03-25", "window": { "start": { "local": "1986-03-25T15:51:44+03:00", "utc": "1986-03-25T12:51:44Z", "ms": 512139103816.9061 }, "end": { "local": "1986-03-25T18:19:19+03:00", "utc": "1986-03-25T15:19:19Z", "ms": 512147958574.6623 } }, "covered_min": 148, "window_min": 148, "qualifies": true }, { "local_date": "1986-03-26", "window": { "start": { "local": "1986-03-26T15:52:07+03:00", "utc": "1986-03-26T12:52:07Z", "ms": 512225527048.39246 }, "end": { "local": "1986-03-26T18:20:09+03:00", "utc": "1986-03-26T15:20:09Z", "ms": 512234409449.45166 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1986-03-25", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:18 on Tue 25 Mar to 06:02 on Wed 26 Mar.", "fact": "1986-03-25T05:17:47Z → 1986-03-26T03:01:47Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:52–18:19 on the 25th, 15:52–18:20 on the 26th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 148 of 148 minutes on the 25th and 0 of 148 on the 26th.", "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 27237 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Tuesday 25 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Erbil, 1986: Wednesday 26 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": "1986-03-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-26", "confidence": "determinate" } ], "quote": "In Erbil, Holī 1986 falls on Wednesday 26 March. It is kept the day after Holikā Dahana, which falls on Tuesday 25 March. Pūrṇimā runs from 08:18 on Tue 25 Mar to 06:02 on Wed 26 Mar and covers all of sāyāhna on the 25th.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-26", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 110, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 }, "end": { "local": "1986-03-27T03:25:01+03:00", "utc": "1986-03-27T00:25:01Z", "ms": 512267100524.2695 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-03-26T06:01:47+03:00", "utc": "1986-03-26T03:01:47Z", "ms": 512190107001.70087 }, "end": { "local": "1986-03-27T03:25:01+03:00", "utc": "1986-03-27T00:25:01Z", "ms": 512267100524.2695 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-03-26", "window": { "start": { "local": "1986-03-26T05:59:57+03:00", "utc": "1986-03-26T02:59:57Z", "ms": 512189997444.15576 }, "end": { "local": "1986-03-26T05:59:57+03:00", "utc": "1986-03-26T02:59:57Z", "ms": 512189997444.15576 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-03-27", "window": { "start": { "local": "1986-03-27T05:58:30+03:00", "utc": "1986-03-27T02:58:30Z", "ms": 512276310156.21265 }, "end": { "local": "1986-03-27T05:58:30+03:00", "utc": "1986-03-27T02:58:30Z", "ms": 512276310156.21265 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:02 on Wed 26 Mar to 03:25 on Thu 27 Mar.", "fact": "1986-03-26T03:01:47Z → 1986-03-27T00:25:01Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 26th and 05:59 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: purvaviddha → tithi-day · margin 110 s < 300 s" }, { "step": "ruling", "text": "Vasantotsava, Erbil, 1986: Wednesday 26 March.", "fact": "confidence: boundary (margin, absent-unstated)" } ], "rule": { "kind": "lunar", "id": "vasantotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "sunrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-03-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-26", "confidence": "boundary" } ], "quote": "In Erbil, Vasantotsava 1986 falls on Wednesday 26 March. Pratipadā runs from 06:02 on Wed 26 Mar to 03:25 on Thu 27 Mar, and is current at sunrise on neither day. It is 1 min 50 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-03-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-03-28", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1418, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-03-28T21:41:31+03:00", "utc": "1986-03-28T18:41:31Z", "ms": 512419290709.44495 }, "end": { "local": "1986-03-29T18:49:48+03:00", "utc": "1986-03-29T15:49:48Z", "ms": 512495387601.1207 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-03-28T21:41:31+03:00", "utc": "1986-03-28T18:41:31Z", "ms": 512419290709.44495 }, "end": { "local": "1986-03-29T18:49:48+03:00", "utc": "1986-03-29T15:49:48Z", "ms": 512495387601.1207 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-03-28", "window": { "start": { "local": "1986-03-28T21:17:52+03:00", "utc": "1986-03-28T18:17:52Z", "ms": 512417872230.70026 }, "end": { "local": "1986-03-28T21:17:52+03:00", "utc": "1986-03-28T18:17:52Z", "ms": 512417872230.70026 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-03-29", "window": { "start": { "local": "1986-03-29T22:33:40+03:00", "utc": "1986-03-29T19:33:40Z", "ms": 512508820402.112 }, "end": { "local": "1986-03-29T22:33:40+03:00", "utc": "1986-03-29T19:33:40Z", "ms": 512508820402.112 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:42 on Fri 28 Mar to 18:50 on Sat 29 Mar.", "fact": "1986-03-28T18:41:31Z → 1986-03-29T15:49:48Z" }, { "step": "kaala", "text": "Moonrise is at 21:18 on the 28th and 22:34 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1418 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Friday 28 March.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-03-28", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-03-28", "confidence": "boundary" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Friday 28 March. Caturthī runs from 21:42 on Fri 28 Mar to 18:50 on Sat 29 Mar, and is current at moonrise on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-03-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1019, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-04-01T12:27:15+04:00", "utc": "1986-04-01T08:27:15Z", "ms": 512728035297.767 }, "end": { "local": "1986-04-02T10:38:16+04:00", "utc": "1986-04-02T06:38:16Z", "ms": 512807896125.41113 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-01T12:27:15+04:00", "utc": "1986-04-01T08:27:15Z", "ms": 512728035297.767 }, "end": { "local": "1986-04-02T10:38:16+04:00", "utc": "1986-04-02T06:38:16Z", "ms": 512807896125.41113 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-01", "window": { "start": { "local": "1986-04-01T12:44:15+04:00", "utc": "1986-04-01T08:44:15Z", "ms": 512729054602.3805 }, "end": { "local": "1986-04-01T13:32:15+04:00", "utc": "1986-04-01T09:32:15Z", "ms": 512731934602.3805 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-04-02", "window": { "start": { "local": "1986-04-02T12:43:57+04:00", "utc": "1986-04-02T08:43:57Z", "ms": 512815436762.9404 }, "end": { "local": "1986-04-02T13:31:57+04:00", "utc": "1986-04-02T09:31:57Z", "ms": 512818316762.9404 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:27 on Tue 1 Apr to 10:38 on Wed 2 Apr.", "fact": "1986-04-01T08:27:15Z → 1986-04-02T06:38:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:44–13:32 on the 1st, 12:44–13:32 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "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 1019 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Erbil, 1986: Tuesday 1 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-01", "confidence": "determinate" } ], "quote": "In Erbil, Śītalāṣṭamī 1986 falls on Tuesday 1 April. Aṣṭamī runs from 12:27 on Tue 1 Apr to 10:38 on Wed 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-04-05", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3342, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-04-04T08:13:53+04:00", "utc": "1986-04-04T04:13:53Z", "ms": 512972033251.3159 }, "end": { "local": "1986-04-05T07:41:14+04:00", "utc": "1986-04-05T03:41:14Z", "ms": 513056474129.2251 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-04T08:13:53+04:00", "utc": "1986-04-04T04:13:53Z", "ms": 512972033251.3159 }, "end": { "local": "1986-04-05T07:41:14+04:00", "utc": "1986-04-05T03:41:14Z", "ms": 513056474129.2251 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-04-04", "window": { "start": { "local": "1986-04-04T06:46:58+04:00", "utc": "1986-04-04T02:46:58Z", "ms": 512966817518.65063 }, "end": { "local": "1986-04-04T06:46:58+04:00", "utc": "1986-04-04T02:46:58Z", "ms": 512966817518.65063 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-04-05", "window": { "start": { "local": "1986-04-05T06:45:32+04:00", "utc": "1986-04-05T02:45:32Z", "ms": 513053132099.8059 }, "end": { "local": "1986-04-05T06:45:32+04:00", "utc": "1986-04-05T02:45:32Z", "ms": 513053132099.8059 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:14 on Fri 4 Apr to 07:41 on Sat 5 Apr.", "fact": "1986-04-04T04:13:53Z → 1986-04-05T03:41:14Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 4th and 06:46 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3342 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Erbil, 1986: Saturday 5 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": "1986-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-05", "confidence": "determinate" } ], "quote": "In Erbil, Pāpamocanī Ekādaśī 1986 falls on Saturday 5 April. Ekādaśī runs from 08:14 on Fri 4 Apr to 07:41 on Sat 5 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-04-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38244, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-04-06T07:36:04+04:00", "utc": "1986-04-06T03:36:04Z", "ms": 513142563811.4521 }, "end": { "local": "1986-04-07T07:58:51+04:00", "utc": "1986-04-07T03:58:51Z", "ms": 513230330803.3758 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-06T07:36:04+04:00", "utc": "1986-04-06T03:36:04Z", "ms": 513142563811.4521 }, "end": { "local": "1986-04-07T07:58:51+04:00", "utc": "1986-04-07T03:58:51Z", "ms": 513230330803.3758 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-04-05", "window": { "start": { "local": "1986-04-05T19:28:36+04:00", "utc": "1986-04-05T15:28:36Z", "ms": 513098916196.26337 }, "end": { "local": "1986-04-05T20:58:40+04:00", "utc": "1986-04-05T16:58:40Z", "ms": 513104320308.0686 } }, "covered_min": 0, "window_min": 90, "qualifies": false }, { "local_date": "1986-04-06", "window": { "start": { "local": "1986-04-06T19:29:27+04:00", "utc": "1986-04-06T15:29:27Z", "ms": 513185366898.1048 }, "end": { "local": "1986-04-06T20:59:13+04:00", "utc": "1986-04-06T16:59:13Z", "ms": 513190752958.5007 } }, "covered_min": 90, "window_min": 90, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:36 on Sun 6 Apr to 07:59 on Mon 7 Apr.", "fact": "1986-04-06T03:36:04Z → 1986-04-07T03:58:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:29–20:59 on the 5th, 19:29–20:59 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 90 minutes on the 5th and 90 of 90 on the 6th.", "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 38244 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Sunday 6 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": "1986-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-06", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Sunday 6 April. Trayodaśī runs from 07:36 on Sun 6 Apr to 07:59 on Mon 7 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-04-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-04-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23326, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-04-07T07:58:51+04:00", "utc": "1986-04-07T03:58:51Z", "ms": 513230330803.3758 }, "end": { "local": "1986-04-08T08:49:42+04:00", "utc": "1986-04-08T04:49:42Z", "ms": 513319782234.7493 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-07T07:58:51+04:00", "utc": "1986-04-07T03:58:51Z", "ms": 513230330803.3758 }, "end": { "local": "1986-04-08T08:49:42+04:00", "utc": "1986-04-08T04:49:42Z", "ms": 513319782234.7493 } }, "kaala": "nishita", "days": [ { "local_date": "1986-04-06", "window": { "start": { "local": "1986-04-07T00:42:05+04:00", "utc": "1986-04-06T20:42:05Z", "ms": 513204124624.58923 }, "end": { "local": "1986-04-07T01:30:05+04:00", "utc": "1986-04-06T21:30:05Z", "ms": 513207004624.58923 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-07", "window": { "start": { "local": "1986-04-08T00:41:48+04:00", "utc": "1986-04-07T20:41:48Z", "ms": 513290507851.6221 }, "end": { "local": "1986-04-08T01:29:48+04:00", "utc": "1986-04-07T21:29:48Z", "ms": 513293387851.6221 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:59 on Mon 7 Apr to 08:50 on Tue 8 Apr.", "fact": "1986-04-07T03:58:51Z → 1986-04-08T04:49:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:42–01:30 on the 6th, 00:42–01:30 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23326 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Monday 7 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": "1986-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-07", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Monday 7 April. Caturdaśī runs from 07:59 on Mon 7 Apr to 08:50 on Tue 8 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2948, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-04-09T10:08:08+04:00", "utc": "1986-04-09T06:08:08Z", "ms": 513410887681.1562 }, "end": { "local": "1986-04-10T11:52:32+04:00", "utc": "1986-04-10T07:52:32Z", "ms": 513503552132.39453 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-09T10:08:08+04:00", "utc": "1986-04-09T06:08:08Z", "ms": 513410887681.1562 }, "end": { "local": "1986-04-10T11:52:32+04:00", "utc": "1986-04-10T07:52:32Z", "ms": 513503552132.39453 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-09", "window": { "start": { "local": "1986-04-09T12:41:57+04:00", "utc": "1986-04-09T08:41:57Z", "ms": 513420116706.9804 }, "end": { "local": "1986-04-09T13:29:57+04:00", "utc": "1986-04-09T09:29:57Z", "ms": 513422996706.9804 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-04-10", "window": { "start": { "local": "1986-04-10T12:41:40+04:00", "utc": "1986-04-10T08:41:40Z", "ms": 513506500430.5026 }, "end": { "local": "1986-04-10T13:29:40+04:00", "utc": "1986-04-10T09:29:40Z", "ms": 513509380430.5026 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 10:08 on Wed 9 Apr to 11:53 on Thu 10 Apr.", "fact": "1986-04-09T06:08:08Z → 1986-04-10T07:52:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 9th, 12:42–13:30 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2948 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Erbil, 1986: Wednesday 9 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-10", "confidence": "boundary" } ], "quote": "In Erbil, Navarātrārambha (Caitra) (Chaitra Navratri) 1986 falls on Wednesday 9 April. Pratipadā runs from 10:08 on Wed 9 Apr to 11:53 on Thu 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1818, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-04-11T13:59:42+04:00", "utc": "1986-04-11T09:59:42Z", "ms": 513597582202.6735 }, "end": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-11T13:59:42+04:00", "utc": "1986-04-11T09:59:42Z", "ms": 513597582202.6735 }, "end": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-11", "window": { "start": { "local": "1986-04-11T12:41:24+04:00", "utc": "1986-04-11T08:41:24Z", "ms": 513592884415.857 }, "end": { "local": "1986-04-11T13:29:24+04:00", "utc": "1986-04-11T09:29:24Z", "ms": 513595764415.857 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-12", "window": { "start": { "local": "1986-04-12T12:41:09+04:00", "utc": "1986-04-12T08:41:09Z", "ms": 513679268676.9308 }, "end": { "local": "1986-04-12T13:29:09+04:00", "utc": "1986-04-12T09:29:09Z", "ms": 513682148676.9308 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:00 on Fri 11 Apr to 16:24 on Sat 12 Apr.", "fact": "1986-04-11T09:59:42Z → 1986-04-12T12:24:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 11th, 12:41–13:29 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1818 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Erbil, 1986: Saturday 12 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-12", "confidence": "boundary" } ], "quote": "In Erbil, Gaurī Tṛtīyā (Gangaur) 1986 falls on Saturday 12 April. Tṛtīyā runs from 14:00 on Fri 11 Apr to 16:24 on Sat 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1818, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-04-11T13:59:42+04:00", "utc": "1986-04-11T09:59:42Z", "ms": 513597582202.6735 }, "end": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-11T13:59:42+04:00", "utc": "1986-04-11T09:59:42Z", "ms": 513597582202.6735 }, "end": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-11", "window": { "start": { "local": "1986-04-11T12:41:24+04:00", "utc": "1986-04-11T08:41:24Z", "ms": 513592884415.857 }, "end": { "local": "1986-04-11T13:29:24+04:00", "utc": "1986-04-11T09:29:24Z", "ms": 513595764415.857 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-12", "window": { "start": { "local": "1986-04-12T12:41:09+04:00", "utc": "1986-04-12T08:41:09Z", "ms": 513679268676.9308 }, "end": { "local": "1986-04-12T13:29:09+04:00", "utc": "1986-04-12T09:29:09Z", "ms": 513682148676.9308 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:00 on Fri 11 Apr to 16:24 on Sat 12 Apr.", "fact": "1986-04-11T09:59:42Z → 1986-04-12T12:24:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 11th, 12:41–13:29 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1818 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Erbil, 1986: Saturday 12 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-12", "confidence": "determinate" } ], "quote": "In Erbil, Saubhāgya Śayana Vrata 1986 falls on Saturday 12 April. Tṛtīyā runs from 14:00 on Fri 11 Apr to 16:24 on Sat 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17473, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1986-04-14T01:41:50+04:00", "utc": "1986-04-13T21:41:50Z", "ms": 513812509888.06366 }, "end": { "local": "1986-05-14T22:35:06+04:00", "utc": "1986-05-14T18:35:06Z", "ms": 516479705589.7814 } }, "span": { "of": "transit", "start": { "local": "1986-04-14T01:41:50+04:00", "utc": "1986-04-13T21:41:50Z", "ms": 513812509888.06366 }, "end": { "local": "1986-04-14T01:41:50+04:00", "utc": "1986-04-13T21:41:50Z", "ms": 513812509888.06366 } }, "kaala": "day", "days": [ { "local_date": "1986-04-13", "window": { "start": { "local": "1986-04-13T06:34:24+04:00", "utc": "1986-04-13T02:34:24Z", "ms": 513743663773.9088 }, "end": { "local": "1986-04-14T06:33:03+04:00", "utc": "1986-04-14T02:33:03Z", "ms": 513829982519.9084 } }, "covered_min": 1, "window_min": 1439, "qualifies": true }, { "local_date": "1986-04-14", "window": { "start": { "local": "1986-04-14T06:33:03+04:00", "utc": "1986-04-14T02:33:03Z", "ms": 513829982519.9084 }, "end": { "local": "1986-04-15T06:31:42+04:00", "utc": "1986-04-15T02:31:42Z", "ms": 513916301866.2367 } }, "covered_min": 0, "window_min": 1439, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 01:42 on Mon 14 Apr.", "fact": "1986-04-13T21:41:50Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:34 on the 13th, and from 06:33 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 17473 s" }, { "step": "ruling", "text": "Vaiśākhī, Erbil, 1986: Sunday 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": "1986-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1986-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1986-04-14", "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 Erbil, Vaiśākhī 1986 falls on Sunday 13 April. The Sun enters Meṣa at 01:42 on Mon 14 Apr, and the rule counts the day from sunrise. Counted from midnight, or by the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-04-13", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10505, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 }, "end": { "local": "1986-04-13T18:58:15+04:00", "utc": "1986-04-13T14:58:15Z", "ms": 513788295042.13544 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-12T16:24:14+04:00", "utc": "1986-04-12T12:24:14Z", "ms": 513692653986.9189 }, "end": { "local": "1986-04-13T18:58:15+04:00", "utc": "1986-04-13T14:58:15Z", "ms": 513788295042.13544 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-12", "window": { "start": { "local": "1986-04-12T12:41:09+04:00", "utc": "1986-04-12T08:41:09Z", "ms": 513679268676.9308 }, "end": { "local": "1986-04-12T13:29:09+04:00", "utc": "1986-04-12T09:29:09Z", "ms": 513682148676.9308 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-13", "window": { "start": { "local": "1986-04-13T12:40:53+04:00", "utc": "1986-04-13T08:40:53Z", "ms": 513765653227.5445 }, "end": { "local": "1986-04-13T13:28:53+04:00", "utc": "1986-04-13T09:28:53Z", "ms": 513768533227.5445 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:24 on Sat 12 Apr to 18:58 on Sun 13 Apr.", "fact": "1986-04-12T12:24:14Z → 1986-04-13T14:58:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 12th, 12:41–13:29 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10505 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Sunday 13 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": "1986-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-13", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Sunday 13 April. Caturthī runs from 16:24 on Sat 12 Apr to 18:58 on Sun 13 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-04-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19762, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-04-13T18:58:15+04:00", "utc": "1986-04-13T14:58:15Z", "ms": 513788295042.13544 }, "end": { "local": "1986-04-14T21:31:34+04:00", "utc": "1986-04-14T17:31:34Z", "ms": 513883894256.8131 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-13T18:58:15+04:00", "utc": "1986-04-13T14:58:15Z", "ms": 513788295042.13544 }, "end": { "local": "1986-04-14T21:31:34+04:00", "utc": "1986-04-14T17:31:34Z", "ms": 513883894256.8131 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-13", "window": { "start": { "local": "1986-04-13T12:40:53+04:00", "utc": "1986-04-13T08:40:53Z", "ms": 513765653227.5445 }, "end": { "local": "1986-04-13T13:28:53+04:00", "utc": "1986-04-13T09:28:53Z", "ms": 513768533227.5445 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-14", "window": { "start": { "local": "1986-04-14T12:40:38+04:00", "utc": "1986-04-14T08:40:38Z", "ms": 513852038081.47437 }, "end": { "local": "1986-04-14T13:28:38+04:00", "utc": "1986-04-14T09:28:38Z", "ms": 513854918081.47437 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:58 on Sun 13 Apr to 21:32 on Mon 14 Apr.", "fact": "1986-04-13T14:58:15Z → 1986-04-14T17:31:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 13th, 12:41–13:29 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19762 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Erbil, 1986: Monday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-14", "confidence": "determinate" } ], "quote": "In Erbil, Lakṣmī Pañcamī 1986 falls on Monday 14 April. Pañcamī runs from 18:58 on Sun 13 Apr to 21:32 on Mon 14 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34137, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-04-17T01:49:02+04:00", "utc": "1986-04-16T21:49:02Z", "ms": 514072142442.09717 }, "end": { "local": "1986-04-18T03:10:44+04:00", "utc": "1986-04-17T23:10:44Z", "ms": 514163443840.3661 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-17T01:49:02+04:00", "utc": "1986-04-16T21:49:02Z", "ms": 514072142442.09717 }, "end": { "local": "1986-04-18T03:10:44+04:00", "utc": "1986-04-17T23:10:44Z", "ms": 514163443840.3661 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-17", "window": { "start": { "local": "1986-04-17T12:39:55+04:00", "utc": "1986-04-17T08:39:55Z", "ms": 514111194600.5637 }, "end": { "local": "1986-04-17T13:27:55+04:00", "utc": "1986-04-17T09:27:55Z", "ms": 514114074600.5637 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-04-18", "window": { "start": { "local": "1986-04-18T12:39:41+04:00", "utc": "1986-04-18T08:39:41Z", "ms": 514197580805.2163 }, "end": { "local": "1986-04-18T13:27:41+04:00", "utc": "1986-04-18T09:27:41Z", "ms": 514200460805.2163 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:49 on Thu 17 Apr to 03:11 on Fri 18 Apr.", "fact": "1986-04-16T21:49:02Z → 1986-04-17T23:10:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 17th, 12:40–13:28 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 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34137 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Erbil, 1986: Thursday 17 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-17", "confidence": "determinate" } ], "quote": "In Erbil, Bhavānī Utpatti 1986 falls on Thursday 17 April. Aṣṭamī runs from 01:49 on Thu 17 Apr to 03:11 on Fri 18 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31781, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1986-04-18T03:10:44+04:00", "utc": "1986-04-17T23:10:44Z", "ms": 514163443840.3661 }, "end": { "local": "1986-04-19T03:49:46+04:00", "utc": "1986-04-18T23:49:46Z", "ms": 514252186442.9129 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-18T03:10:44+04:00", "utc": "1986-04-17T23:10:44Z", "ms": 514163443840.3661 }, "end": { "local": "1986-04-19T03:49:46+04:00", "utc": "1986-04-18T23:49:46Z", "ms": 514252186442.9129 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-18", "window": { "start": { "local": "1986-04-18T12:39:41+04:00", "utc": "1986-04-18T08:39:41Z", "ms": 514197580805.2163 }, "end": { "local": "1986-04-18T13:27:41+04:00", "utc": "1986-04-18T09:27:41Z", "ms": 514200460805.2163 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-04-19", "window": { "start": { "local": "1986-04-19T12:39:27+04:00", "utc": "1986-04-19T08:39:27Z", "ms": 514283967382.1585 }, "end": { "local": "1986-04-19T13:27:27+04:00", "utc": "1986-04-19T09:27:27Z", "ms": 514286847382.1585 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 03:11 on Fri 18 Apr to 03:50 on Sat 19 Apr.", "fact": "1986-04-17T23:10:44Z → 1986-04-18T23:49:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 18th, 12:39–13:27 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 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31781 s" }, { "step": "ruling", "text": "Rāma Navamī, Erbil, 1986: Friday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-18", "confidence": "determinate" } ], "quote": "In Erbil, Rāma Navamī 1986 falls on Friday 18 April. Navamī runs from 03:11 on Fri 18 Apr to 03:50 on Sat 19 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-04-20", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9789, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-04-20T03:42:00+04:00", "utc": "1986-04-19T23:42:00Z", "ms": 514338119586.82025 }, "end": { "local": "1986-04-21T02:46:57+04:00", "utc": "1986-04-20T22:46:57Z", "ms": 514421216643.5308 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-20T03:42:00+04:00", "utc": "1986-04-19T23:42:00Z", "ms": 514338119586.82025 }, "end": { "local": "1986-04-21T02:46:57+04:00", "utc": "1986-04-20T22:46:57Z", "ms": 514421216643.5308 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-04-20", "window": { "start": { "local": "1986-04-20T06:25:09+04:00", "utc": "1986-04-20T02:25:09Z", "ms": 514347908603.46594 }, "end": { "local": "1986-04-20T06:25:09+04:00", "utc": "1986-04-20T02:25:09Z", "ms": 514347908603.46594 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-04-21", "window": { "start": { "local": "1986-04-21T06:23:52+04:00", "utc": "1986-04-21T02:23:52Z", "ms": 514434232156.4099 }, "end": { "local": "1986-04-21T06:23:52+04:00", "utc": "1986-04-21T02:23:52Z", "ms": 514434232156.4099 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:42 on Sun 20 Apr to 02:47 on Mon 21 Apr.", "fact": "1986-04-19T23:42:00Z → 1986-04-20T22:46:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:25 on the 20th and 06:24 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is not 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 9789 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Erbil, 1986: Sunday 20 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": "1986-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-20", "confidence": "determinate" } ], "quote": "In Erbil, Kāmadā Ekādaśī 1986 falls on Sunday 20 April. Ekādaśī runs from 03:42 on Sun 20 Apr to 02:47 on Mon 21 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33741, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-04-22T01:07:30+04:00", "utc": "1986-04-21T21:07:30Z", "ms": 514501650382.94305 }, "end": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-22T01:07:30+04:00", "utc": "1986-04-21T21:07:30Z", "ms": 514501650382.94305 }, "end": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-21", "window": { "start": { "local": "1986-04-21T12:39:02+04:00", "utc": "1986-04-21T08:39:02Z", "ms": 514456741710.2851 }, "end": { "local": "1986-04-21T13:27:02+04:00", "utc": "1986-04-21T09:27:02Z", "ms": 514459621710.2851 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-22", "window": { "start": { "local": "1986-04-22T12:38:49+04:00", "utc": "1986-04-22T08:38:49Z", "ms": 514543129491.36096 }, "end": { "local": "1986-04-22T13:26:49+04:00", "utc": "1986-04-22T09:26:49Z", "ms": 514546009491.36096 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:08 on Tue 22 Apr to 22:49 on Tue 22 Apr.", "fact": "1986-04-21T21:07:30Z → 1986-04-22T18:49:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 21st, 12:39–13:27 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33741 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Erbil, 1986: Tuesday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-22", "confidence": "determinate" } ], "quote": "In Erbil, Anaṅga Trayodaśī 1986 falls on Tuesday 22 April. Trayodaśī runs from 01:08 on Tue 22 Apr to 22:49 on Tue 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-04-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6061, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-04-22T01:07:30+04:00", "utc": "1986-04-21T21:07:30Z", "ms": 514501650382.94305 }, "end": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-22T01:07:30+04:00", "utc": "1986-04-21T21:07:30Z", "ms": 514501650382.94305 }, "end": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-04-21", "window": { "start": { "local": "1986-04-21T19:42:11+04:00", "utc": "1986-04-21T15:42:11Z", "ms": 514482131264.1603 }, "end": { "local": "1986-04-21T21:07:35+04:00", "utc": "1986-04-21T17:07:35Z", "ms": 514487254630.8481 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "1986-04-22", "window": { "start": { "local": "1986-04-22T19:43:02+04:00", "utc": "1986-04-22T15:43:02Z", "ms": 514568582468.4032 }, "end": { "local": "1986-04-22T21:08:09+04:00", "utc": "1986-04-22T17:08:09Z", "ms": 514573689033.65485 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:08 on Tue 22 Apr to 22:49 on Tue 22 Apr.", "fact": "1986-04-21T21:07:30Z → 1986-04-22T18:49:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:42–21:08 on the 21st, 19:43–21:08 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 0 of 85 minutes on the 21st and 85 of 85 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 6061 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Tuesday 22 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": "1986-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-22", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Tuesday 22 April. Trayodaśī runs from 01:08 on Tue 22 Apr to 22:49 on Tue 22 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-04-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23560, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 }, "end": { "local": "1986-04-23T19:59:17+04:00", "utc": "1986-04-23T15:59:17Z", "ms": 514655957433.34186 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-22T22:49:10+04:00", "utc": "1986-04-22T18:49:10Z", "ms": 514579750481.5299 }, "end": { "local": "1986-04-23T19:59:17+04:00", "utc": "1986-04-23T15:59:17Z", "ms": 514655957433.34186 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-22", "window": { "start": { "local": "1986-04-22T12:38:49+04:00", "utc": "1986-04-22T08:38:49Z", "ms": 514543129491.36096 }, "end": { "local": "1986-04-22T13:26:49+04:00", "utc": "1986-04-22T09:26:49Z", "ms": 514546009491.36096 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-23", "window": { "start": { "local": "1986-04-23T12:38:38+04:00", "utc": "1986-04-23T08:38:38Z", "ms": 514629517704.6212 }, "end": { "local": "1986-04-23T13:26:38+04:00", "utc": "1986-04-23T09:26:38Z", "ms": 514632397704.6212 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:49 on Tue 22 Apr to 19:59 on Wed 23 Apr.", "fact": "1986-04-22T18:49:10Z → 1986-04-23T15:59:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 22nd, 12:39–13:27 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 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 23560 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Erbil, 1986: Wednesday 23 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": "1986-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-23", "confidence": "determinate" } ], "quote": "In Erbil, Viṣṇudamanaka Caturdaśī 1986 falls on Wednesday 23 April. Caturdaśī runs from 22:49 on Tue 22 Apr to 19:59 on Wed 23 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11995, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-04-23T19:59:17+04:00", "utc": "1986-04-23T15:59:17Z", "ms": 514655957433.34186 }, "end": { "local": "1986-04-24T16:46:22+04:00", "utc": "1986-04-24T12:46:22Z", "ms": 514730781703.555 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1986-04-23T19:59:17+04:00", "utc": "1986-04-23T15:59:17Z", "ms": 514655957433.34186 }, "end": { "local": "1986-04-24T16:46:22+04:00", "utc": "1986-04-24T12:46:22Z", "ms": 514730781703.555 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-04-23", "window": { "start": { "local": "1986-04-23T12:38:38+04:00", "utc": "1986-04-23T08:38:38Z", "ms": 514629517704.6212 }, "end": { "local": "1986-04-23T13:26:38+04:00", "utc": "1986-04-23T09:26:38Z", "ms": 514632397704.6212 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-04-24", "window": { "start": { "local": "1986-04-24T12:38:26+04:00", "utc": "1986-04-24T08:38:26Z", "ms": 514715906366.19763 }, "end": { "local": "1986-04-24T13:26:26+04:00", "utc": "1986-04-24T09:26:26Z", "ms": 514718786366.19763 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:59 on Wed 23 Apr to 16:46 on Thu 24 Apr.", "fact": "1986-04-23T15:59:17Z → 1986-04-24T12:46:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 23rd, 12:38–13:26 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11995 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Erbil, 1986: Thursday 24 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": "1986-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-24", "confidence": "determinate" } ], "quote": "In Erbil, Caitrī Pūrṇimā 1986 falls on Thursday 24 April. Pūrṇimā runs from 19:59 on Wed 23 Apr to 16:46 on Thu 24 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-04-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12219, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-04-27T06:21:21+04:00", "utc": "1986-04-27T02:21:21Z", "ms": 514952480930.77515 }, "end": { "local": "1986-04-28T03:08:01+04:00", "utc": "1986-04-27T23:08:01Z", "ms": 515027281137.45435 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-04-27T06:21:21+04:00", "utc": "1986-04-27T02:21:21Z", "ms": 514952480930.77515 }, "end": { "local": "1986-04-28T03:08:01+04:00", "utc": "1986-04-27T23:08:01Z", "ms": 515027281137.45435 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-04-26", "window": { "start": { "local": "1986-04-26T22:29:02+04:00", "utc": "1986-04-26T18:29:02Z", "ms": 514924142321.2575 }, "end": { "local": "1986-04-26T22:29:02+04:00", "utc": "1986-04-26T18:29:02Z", "ms": 514924142321.2575 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-04-27", "window": { "start": { "local": "1986-04-27T23:44:22+04:00", "utc": "1986-04-27T19:44:22Z", "ms": 515015062398.9637 }, "end": { "local": "1986-04-27T23:44:22+04:00", "utc": "1986-04-27T19:44:22Z", "ms": 515015062398.9637 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:21 on Sun 27 Apr to 03:08 on Mon 28 Apr.", "fact": "1986-04-27T02:21:21Z → 1986-04-27T23:08:01Z" }, { "step": "kaala", "text": "Moonrise is at 22:29 on the 26th and 23:44 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12219 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Sunday 27 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": "1986-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-04-27", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Sunday 27 April. Caturthī runs from 06:21 on Sun 27 Apr to 03:08 on Mon 28 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-05-04", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39956, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-05-03T18:21:31+04:00", "utc": "1986-05-03T14:21:31Z", "ms": 515514090815.25916 }, "end": { "local": "1986-05-04T19:01:45+04:00", "utc": "1986-05-04T15:01:45Z", "ms": 515602904716.2385 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-03T18:21:31+04:00", "utc": "1986-05-03T14:21:31Z", "ms": 515514090815.25916 }, "end": { "local": "1986-05-04T19:01:45+04:00", "utc": "1986-05-04T15:01:45Z", "ms": 515602904716.2385 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-05-04", "window": { "start": { "local": "1986-05-04T06:08:43+04:00", "utc": "1986-05-04T02:08:43Z", "ms": 515556522819.09186 }, "end": { "local": "1986-05-04T06:08:43+04:00", "utc": "1986-05-04T02:08:43Z", "ms": 515556522819.09186 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-05-05", "window": { "start": { "local": "1986-05-05T06:07:40+04:00", "utc": "1986-05-05T02:07:40Z", "ms": 515642860423.6442 }, "end": { "local": "1986-05-05T06:07:40+04:00", "utc": "1986-05-05T02:07:40Z", "ms": 515642860423.6442 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:22 on Sat 3 May to 19:02 on Sun 4 May.", "fact": "1986-05-03T14:21:31Z → 1986-05-04T15:01:45Z" }, { "step": "kaala", "text": "Sunrise is at 06:09 on the 4th and 06:08 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39956 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Erbil, 1986: Sunday 4 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": "1986-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-04", "confidence": "determinate" } ], "quote": "In Erbil, Varūthinī Ekādaśī 1986 falls on Sunday 4 May. Ekādaśī runs from 18:22 on Sat 3 May to 19:02 on Sun 4 May and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-05-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-06", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1171, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-05-05T20:13:41+04:00", "utc": "1986-05-05T16:13:41Z", "ms": 515693620714.117 }, "end": { "local": "1986-05-06T21:52:29+04:00", "utc": "1986-05-06T17:52:29Z", "ms": 515785948893.7336 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-05T20:13:41+04:00", "utc": "1986-05-05T16:13:41Z", "ms": 515693620714.117 }, "end": { "local": "1986-05-06T21:52:29+04:00", "utc": "1986-05-06T17:52:29Z", "ms": 515785948893.7336 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-05-05", "window": { "start": { "local": "1986-05-05T19:54:10+04:00", "utc": "1986-05-05T15:54:10Z", "ms": 515692449813.3103 }, "end": { "local": "1986-05-05T21:15:50+04:00", "utc": "1986-05-05T17:15:50Z", "ms": 515697349737.7406 } }, "covered_min": 62, "window_min": 82, "qualifies": true }, { "local_date": "1986-05-06", "window": { "start": { "local": "1986-05-06T19:55:01+04:00", "utc": "1986-05-06T15:55:01Z", "ms": 515778900951.469 }, "end": { "local": "1986-05-06T21:16:26+04:00", "utc": "1986-05-06T17:16:26Z", "ms": 515783786066.2785 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:14 on Mon 5 May to 21:52 on Tue 6 May.", "fact": "1986-05-05T16:13:41Z → 1986-05-06T17:52:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:54–21:16 on the 5th, 19:55–21:16 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 62 of 82 minutes on the 5th and 81 of 81 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1171 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Tuesday 6 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": "1986-05-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-06", "confidence": "boundary" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Tuesday 6 May. Trayodaśī runs from 20:14 on Mon 5 May to 21:52 on Tue 6 May and covers all of pradoṣa that evening. It also reaches the previous evening for 62 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/erbil/festivals/1986/pradosha-vrata?on=1986-05-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-05-06", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2601, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-05-06T21:52:29+04:00", "utc": "1986-05-06T17:52:29Z", "ms": 515785948893.7336 }, "end": { "local": "1986-05-07T23:52:55+04:00", "utc": "1986-05-07T19:52:55Z", "ms": 515879575008.7445 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-06T21:52:29+04:00", "utc": "1986-05-06T17:52:29Z", "ms": 515785948893.7336 }, "end": { "local": "1986-05-07T23:52:55+04:00", "utc": "1986-05-07T19:52:55Z", "ms": 515879575008.7445 } }, "kaala": "nishita", "days": [ { "local_date": "1986-05-06", "window": { "start": { "local": "1986-05-07T00:36:20+04:00", "utc": "1986-05-06T20:36:20Z", "ms": 515795780132.00464 }, "end": { "local": "1986-05-07T01:24:20+04:00", "utc": "1986-05-06T21:24:20Z", "ms": 515798660132.00464 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-05-07", "window": { "start": { "local": "1986-05-08T00:36:16+04:00", "utc": "1986-05-07T20:36:16Z", "ms": 515882176310.37555 }, "end": { "local": "1986-05-08T01:24:16+04:00", "utc": "1986-05-07T21:24:16Z", "ms": 515885056310.37555 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:52 on Tue 6 May to 23:53 on Wed 7 May.", "fact": "1986-05-06T17:52:29Z → 1986-05-07T19:52:55Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:36–01:24 on the 6th, 00:36–01:24 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2601 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Tuesday 6 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-06", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Tuesday 6 May. Caturdaśī runs from 21:52 on Tue 6 May to 23:53 on Wed 7 May and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-05-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35419, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-05-11T07:09:11+04:00", "utc": "1986-05-11T03:09:11Z", "ms": 516164951374.12177 }, "end": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-11T07:09:11+04:00", "utc": "1986-05-11T03:09:11Z", "ms": 516164951374.12177 }, "end": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-05-10", "window": { "start": { "local": "1986-05-10T19:58:24+04:00", "utc": "1986-05-10T15:58:24Z", "ms": 516124704115.02637 }, "end": { "local": "1986-05-10T21:18:52+04:00", "utc": "1986-05-10T17:18:52Z", "ms": 516129531897.37726 } }, "covered_min": 0, "window_min": 80, "qualifies": false }, { "local_date": "1986-05-11", "window": { "start": { "local": "1986-05-11T19:59:14+04:00", "utc": "1986-05-11T15:59:14Z", "ms": 516211154431.36273 }, "end": { "local": "1986-05-11T21:19:28+04:00", "utc": "1986-05-11T17:19:28Z", "ms": 516215968389.4243 } }, "covered_min": 80, "window_min": 80, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:09 on Sun 11 May to 09:40 on Mon 12 May.", "fact": "1986-05-11T03:09:11Z → 1986-05-12T05:39:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:58–21:19 on the 10th, 19:59–21:19 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 80 minutes on the 10th and 80 of 80 on the 11th.", "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 35419 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Erbil, 1986: Sunday 11 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-11", "confidence": "determinate" } ], "quote": "In Erbil, Paraśurāma Jayantī 1986 falls on Sunday 11 May. Tṛtīyā runs from 07:09 on Sun 11 May to 09:40 on Mon 12 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3669, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-05-11T07:09:11+04:00", "utc": "1986-05-11T03:09:11Z", "ms": 516164951374.12177 }, "end": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-11T07:09:11+04:00", "utc": "1986-05-11T03:09:11Z", "ms": 516164951374.12177 }, "end": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 } }, "kaala": "purvahna", "days": [ { "local_date": "1986-05-11", "window": { "start": { "local": "1986-05-11T06:01:52+04:00", "utc": "1986-05-11T02:01:52Z", "ms": 516160912482.6581 }, "end": { "local": "1986-05-11T10:41:00+04:00", "utc": "1986-05-11T06:41:00Z", "ms": 516177659798.89294 } }, "covered_min": 212, "window_min": 279, "qualifies": true }, { "local_date": "1986-05-12", "window": { "start": { "local": "1986-05-12T06:00:59+04:00", "utc": "1986-05-12T02:00:59Z", "ms": 516247259116.8244 }, "end": { "local": "1986-05-12T10:40:41+04:00", "utc": "1986-05-12T06:40:41Z", "ms": 516264040912.3905 } }, "covered_min": 219, "window_min": 280, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:09 on Sun 11 May to 09:40 on Mon 12 May.", "fact": "1986-05-11T03:09:11Z → 1986-05-12T05:39:32Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:02–10:41 on the 11th, 06:01–10:41 on the 12th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 212 of 279 minutes on the 11th and 219 of 280 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both forenoons qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 3669 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Erbil, 1986: Monday 12 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-12", "confidence": "determinate" } ], "quote": "In Erbil, Akṣaya Tṛtīyā 1986 falls on Monday 12 May. Tṛtīyā runs from 07:09 on Sun 11 May to 09:40 on Mon 12 May and covers 219 of 280 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 212 minutes; by the rule the second forenoon is taken.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-05-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2162, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 }, "end": { "local": "1986-05-13T12:00:29+04:00", "utc": "1986-05-13T08:00:29Z", "ms": 516355229036.82697 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-12T09:39:32+04:00", "utc": "1986-05-12T05:39:32Z", "ms": 516260371638.20984 }, "end": { "local": "1986-05-13T12:00:29+04:00", "utc": "1986-05-13T08:00:29Z", "ms": 516355229036.82697 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-12", "window": { "start": { "local": "1986-05-12T12:36:32+04:00", "utc": "1986-05-12T08:36:32Z", "ms": 516270991810.1735 }, "end": { "local": "1986-05-12T13:24:32+04:00", "utc": "1986-05-12T09:24:32Z", "ms": 516273871810.1735 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-05-13", "window": { "start": { "local": "1986-05-13T12:36:31+04:00", "utc": "1986-05-13T08:36:31Z", "ms": 516357390717.48486 }, "end": { "local": "1986-05-13T13:24:31+04:00", "utc": "1986-05-13T09:24:31Z", "ms": 516360270717.48486 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:40 on Mon 12 May to 12:00 on Tue 13 May.", "fact": "1986-05-12T05:39:32Z → 1986-05-13T08:00:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 12th, 12:37–13:25 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 2162 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Monday 12 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": "1986-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-12", "confidence": "boundary" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Monday 12 May. Caturthī runs from 09:40 on Mon 12 May to 12:00 on Tue 13 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-05-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-13", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2162, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-05-13T12:00:29+04:00", "utc": "1986-05-13T08:00:29Z", "ms": 516355229036.82697 }, "end": { "local": "1986-05-14T14:03:44+04:00", "utc": "1986-05-14T10:03:44Z", "ms": 516449024308.0617 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-13T12:00:29+04:00", "utc": "1986-05-13T08:00:29Z", "ms": 516355229036.82697 }, "end": { "local": "1986-05-14T14:03:44+04:00", "utc": "1986-05-14T10:03:44Z", "ms": 516449024308.0617 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-13", "window": { "start": { "local": "1986-05-13T12:36:31+04:00", "utc": "1986-05-13T08:36:31Z", "ms": 516357390717.48486 }, "end": { "local": "1986-05-13T13:24:31+04:00", "utc": "1986-05-13T09:24:31Z", "ms": 516360270717.48486 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-05-14", "window": { "start": { "local": "1986-05-14T12:36:30+04:00", "utc": "1986-05-14T08:36:30Z", "ms": 516443790175.08545 }, "end": { "local": "1986-05-14T13:24:30+04:00", "utc": "1986-05-14T09:24:30Z", "ms": 516446670175.08545 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:00 on Tue 13 May to 14:04 on Wed 14 May.", "fact": "1986-05-13T08:00:29Z → 1986-05-14T10:03:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 13th, 12:37–13:25 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 48 of 48 on the 14th.", "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 2162 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Erbil, 1986: Tuesday 13 May.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1986-05-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-14", "confidence": "boundary" } ], "quote": "In Erbil, Śaṅkara Jayantī 1986 falls on Tuesday 13 May. Pañcamī runs from 12:00 on Tue 13 May to 14:04 on Wed 14 May 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/erbil/festivals/1986/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": "/erbil/festivals/1986/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8171, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-05-15T15:40:42+04:00", "utc": "1986-05-15T11:40:42Z", "ms": 516541241590.79297 }, "end": { "local": "1986-05-16T16:43:20+04:00", "utc": "1986-05-16T12:43:20Z", "ms": 516631399710.1787 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-15T15:40:42+04:00", "utc": "1986-05-15T11:40:42Z", "ms": 516541241590.79297 }, "end": { "local": "1986-05-16T16:43:20+04:00", "utc": "1986-05-16T12:43:20Z", "ms": 516631399710.1787 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-15", "window": { "start": { "local": "1986-05-15T12:36:30+04:00", "utc": "1986-05-15T08:36:30Z", "ms": 516530190178.6752 }, "end": { "local": "1986-05-15T13:24:30+04:00", "utc": "1986-05-15T09:24:30Z", "ms": 516533070178.6752 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-05-16", "window": { "start": { "local": "1986-05-16T12:36:31+04:00", "utc": "1986-05-16T08:36:31Z", "ms": 516616590723.58875 }, "end": { "local": "1986-05-16T13:24:31+04:00", "utc": "1986-05-16T09:24:31Z", "ms": 516619470723.58875 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 15:41 on Thu 15 May to 16:43 on Fri 16 May.", "fact": "1986-05-15T11:40:42Z → 1986-05-16T12:43:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 15th, 12:37–13:25 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8171 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Erbil, 1986: Friday 16 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-16", "confidence": "determinate" } ], "quote": "In Erbil, Gaṅgotpatti (Ganga Saptami) 1986 falls on Friday 16 May. Saptamī runs from 15:41 on Thu 15 May to 16:43 on Fri 16 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-05-20", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27930, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-05-19T15:33:19+04:00", "utc": "1986-05-19T11:33:19Z", "ms": 516886398837.7641 }, "end": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-19T15:33:19+04:00", "utc": "1986-05-19T11:33:19Z", "ms": 516886398837.7641 }, "end": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-05-19", "window": { "start": { "local": "1986-05-19T05:55:25+04:00", "utc": "1986-05-19T01:55:25Z", "ms": 516851725421.8861 }, "end": { "local": "1986-05-19T05:55:25+04:00", "utc": "1986-05-19T01:55:25Z", "ms": 516851725421.8861 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-05-20", "window": { "start": { "local": "1986-05-20T05:54:44+04:00", "utc": "1986-05-20T01:54:44Z", "ms": 516938083695.49347 }, "end": { "local": "1986-05-20T05:54:44+04:00", "utc": "1986-05-20T01:54:44Z", "ms": 516938083695.49347 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:33 on Mon 19 May to 13:40 on Tue 20 May.", "fact": "1986-05-19T11:33:19Z → 1986-05-20T09:40:13Z" }, { "step": "kaala", "text": "Sunrise is at 05:55 on the 19th and 05:55 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 27930 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Erbil, 1986: Tuesday 20 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": "1986-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-20", "confidence": "determinate" } ], "quote": "In Erbil, Mohinī Ekādaśī 1986 falls on Tuesday 20 May. Ekādaśī runs from 15:33 on Mon 19 May to 13:40 on Tue 20 May and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-05-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 935, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 }, "end": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 }, "end": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-20", "window": { "start": { "local": "1986-05-20T12:36:38+04:00", "utc": "1986-05-20T08:36:38Z", "ms": 516962198217.3117 }, "end": { "local": "1986-05-20T13:24:38+04:00", "utc": "1986-05-20T09:24:38Z", "ms": 516965078217.3117 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-05-21", "window": { "start": { "local": "1986-05-21T12:36:41+04:00", "utc": "1986-05-21T08:36:41Z", "ms": 517048601395.47253 }, "end": { "local": "1986-05-21T13:24:41+04:00", "utc": "1986-05-21T09:24:41Z", "ms": 517051481395.47253 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:40 on Tue 20 May to 11:07 on Wed 21 May.", "fact": "1986-05-20T09:40:13Z → 1986-05-21T07:07:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 20th, 12:37–13:25 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 0 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 935 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Erbil, 1986: Wednesday 21 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-20", "confidence": "determinate" } ], "quote": "In Erbil, Paraśurāma Dvādaśī 1986 falls on Wednesday 21 May. Dvādaśī runs from 13:40 on Tue 20 May to 11:07 on Wed 21 May, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 935, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 }, "end": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-20T13:40:13+04:00", "utc": "1986-05-20T09:40:13Z", "ms": 516966013332.9299 }, "end": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-20", "window": { "start": { "local": "1986-05-20T12:36:38+04:00", "utc": "1986-05-20T08:36:38Z", "ms": 516962198217.3117 }, "end": { "local": "1986-05-20T13:24:38+04:00", "utc": "1986-05-20T09:24:38Z", "ms": 516965078217.3117 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-05-21", "window": { "start": { "local": "1986-05-21T12:36:41+04:00", "utc": "1986-05-21T08:36:41Z", "ms": 517048601395.47253 }, "end": { "local": "1986-05-21T13:24:41+04:00", "utc": "1986-05-21T09:24:41Z", "ms": 517051481395.47253 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:40 on Tue 20 May to 11:07 on Wed 21 May.", "fact": "1986-05-20T09:40:13Z → 1986-05-21T07:07:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 20th, 12:37–13:25 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 0 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 935 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Erbil, 1986: Wednesday 21 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-20", "confidence": "determinate" } ], "quote": "In Erbil, Rukmiṇī Dvādaśī 1986 falls on Wednesday 21 May. Dvādaśī runs from 13:40 on Tue 20 May to 11:07 on Wed 21 May, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-05-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32394, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 }, "end": { "local": "1986-05-22T08:01:32+04:00", "utc": "1986-05-22T04:01:32Z", "ms": 517118492106.86633 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-21T11:07:25+04:00", "utc": "1986-05-21T07:07:25Z", "ms": 517043245134.4697 }, "end": { "local": "1986-05-22T08:01:32+04:00", "utc": "1986-05-22T04:01:32Z", "ms": 517118492106.86633 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-05-21", "window": { "start": { "local": "1986-05-21T20:07:19+04:00", "utc": "1986-05-21T16:07:19Z", "ms": 517075639275.5089 }, "end": { "local": "1986-05-21T21:25:28+04:00", "utc": "1986-05-21T17:25:28Z", "ms": 517080328025.5873 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1986-05-22", "window": { "start": { "local": "1986-05-22T20:08:05+04:00", "utc": "1986-05-22T16:08:05Z", "ms": 517162085273.28467 }, "end": { "local": "1986-05-22T21:26:03+04:00", "utc": "1986-05-22T17:26:03Z", "ms": 517166762953.0483 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:07 on Wed 21 May to 08:02 on Thu 22 May.", "fact": "1986-05-21T07:07:25Z → 1986-05-22T04:01:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:07–21:25 on the 21st, 20:08–21:26 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 78 of 78 minutes on the 21st and 0 of 78 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 32394 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Wednesday 21 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": "1986-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-21", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Wednesday 21 May. Trayodaśī runs from 11:07 on Wed 21 May to 08:02 on Thu 22 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-05-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25487, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-05-22T08:01:32+04:00", "utc": "1986-05-22T04:01:32Z", "ms": 517118492106.86633 }, "end": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-22T08:01:32+04:00", "utc": "1986-05-22T04:01:32Z", "ms": 517118492106.86633 }, "end": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-05-21", "window": { "start": { "local": "1986-05-21T20:07:19+04:00", "utc": "1986-05-21T16:07:19Z", "ms": 517075639275.5089 }, "end": { "local": "1986-05-21T21:25:28+04:00", "utc": "1986-05-21T17:25:28Z", "ms": 517080328025.5873 } }, "covered_min": 0, "window_min": 78, "qualifies": false }, { "local_date": "1986-05-22", "window": { "start": { "local": "1986-05-22T20:08:05+04:00", "utc": "1986-05-22T16:08:05Z", "ms": 517162085273.28467 }, "end": { "local": "1986-05-22T21:26:03+04:00", "utc": "1986-05-22T17:26:03Z", "ms": 517166762953.0483 } }, "covered_min": 78, "window_min": 78, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:02 on Thu 22 May to 04:31 on Fri 23 May.", "fact": "1986-05-22T04:01:32Z → 1986-05-23T00:30:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:07–21:25 on the 21st, 20:08–21:26 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 78 minutes on the 21st and 78 of 78 on the 22nd.", "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 25487 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Erbil, 1986: Thursday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-22", "confidence": "determinate" } ], "quote": "In Erbil, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1986 falls on Thursday 22 May. Caturdaśī runs from 08:02 on Thu 22 May to 04:31 on Fri 23 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29159, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 }, "end": { "local": "1986-05-24T00:44:44+04:00", "utc": "1986-05-23T20:44:44Z", "ms": 517265084067.2855 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 }, "end": { "local": "1986-05-24T00:44:44+04:00", "utc": "1986-05-23T20:44:44Z", "ms": 517265084067.2855 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-23", "window": { "start": { "local": "1986-05-23T12:36:49+04:00", "utc": "1986-05-23T08:36:49Z", "ms": 517221409288.76 }, "end": { "local": "1986-05-23T13:24:49+04:00", "utc": "1986-05-23T09:24:49Z", "ms": 517224289288.76 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-05-24", "window": { "start": { "local": "1986-05-24T12:36:54+04:00", "utc": "1986-05-24T08:36:54Z", "ms": 517307813996.2643 }, "end": { "local": "1986-05-24T13:24:54+04:00", "utc": "1986-05-24T09:24:54Z", "ms": 517310693996.2643 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:31 on Fri 23 May to 00:45 on Sat 24 May.", "fact": "1986-05-23T00:30:50Z → 1986-05-23T20:44:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 23rd, 12:37–13:25 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 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: unstated → only-day · margin 29159 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Erbil, 1986: Friday 23 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": "1986-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-23", "confidence": "determinate" } ], "quote": "In Erbil, Buddha Pūrṇimā 1986 falls on Friday 23 May. Pūrṇimā runs from 04:31 on Fri 23 May to 00:45 on Sat 24 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29159, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 }, "end": { "local": "1986-05-24T00:44:44+04:00", "utc": "1986-05-23T20:44:44Z", "ms": 517265084067.2855 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-23T04:30:50+04:00", "utc": "1986-05-23T00:30:50Z", "ms": 517192250295.0706 }, "end": { "local": "1986-05-24T00:44:44+04:00", "utc": "1986-05-23T20:44:44Z", "ms": 517265084067.2855 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-05-23", "window": { "start": { "local": "1986-05-23T12:36:49+04:00", "utc": "1986-05-23T08:36:49Z", "ms": 517221409288.76 }, "end": { "local": "1986-05-23T13:24:49+04:00", "utc": "1986-05-23T09:24:49Z", "ms": 517224289288.76 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-05-24", "window": { "start": { "local": "1986-05-24T12:36:54+04:00", "utc": "1986-05-24T08:36:54Z", "ms": 517307813996.2643 }, "end": { "local": "1986-05-24T13:24:54+04:00", "utc": "1986-05-24T09:24:54Z", "ms": 517310693996.2643 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:31 on Fri 23 May to 00:45 on Sat 24 May.", "fact": "1986-05-23T00:30:50Z → 1986-05-23T20:44:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 23rd, 12:37–13:25 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 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: paraviddha → only-day · margin 29159 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Erbil, 1986: Friday 23 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": "1986-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-23", "confidence": "determinate" } ], "quote": "In Erbil, Sampat Gaurī Vrata 1986 falls on Friday 23 May. Pūrṇimā runs from 04:31 on Fri 23 May to 00:45 on Sat 24 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-05-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35999, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-05-26T13:36:24+04:00", "utc": "1986-05-26T09:36:24Z", "ms": 517484184399.5019 }, "end": { "local": "1986-05-27T10:31:11+04:00", "utc": "1986-05-27T06:31:11Z", "ms": 517559470673.63153 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-05-26T13:36:24+04:00", "utc": "1986-05-26T09:36:24Z", "ms": 517484184399.5019 }, "end": { "local": "1986-05-27T10:31:11+04:00", "utc": "1986-05-27T06:31:11Z", "ms": 517559470673.63153 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-05-26", "window": { "start": { "local": "1986-05-26T23:36:23+04:00", "utc": "1986-05-26T19:36:23Z", "ms": 517520183141.80176 }, "end": { "local": "1986-05-26T23:36:23+04:00", "utc": "1986-05-26T19:36:23Z", "ms": 517520183141.80176 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-05-27", "window": { "start": { "local": "1986-05-28T00:27:36+04:00", "utc": "1986-05-27T20:27:36Z", "ms": 517609656219.6493 }, "end": { "local": "1986-05-28T00:27:36+04:00", "utc": "1986-05-27T20:27:36Z", "ms": 517609656219.6493 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:36 on Mon 26 May to 10:31 on Tue 27 May.", "fact": "1986-05-26T09:36:24Z → 1986-05-27T06:31:11Z" }, { "step": "kaala", "text": "Moonrise is at 23:36 on the 26th and 00:28 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35999 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Monday 26 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": "1986-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-05-26", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Monday 26 May. Caturthī runs from 13:36 on Mon 26 May to 10:31 on Tue 27 May and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-06-03", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2917, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-06-02T06:36:45+04:00", "utc": "1986-06-02T02:36:45Z", "ms": 518063805492.0132 }, "end": { "local": "1986-06-03T08:22:39+04:00", "utc": "1986-06-03T04:22:39Z", "ms": 518156558689.977 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-02T06:36:45+04:00", "utc": "1986-06-02T02:36:45Z", "ms": 518063805492.0132 }, "end": { "local": "1986-06-03T08:22:39+04:00", "utc": "1986-06-03T04:22:39Z", "ms": 518156558689.977 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-06-02", "window": { "start": { "local": "1986-06-02T05:48:09+04:00", "utc": "1986-06-02T01:48:09Z", "ms": 518060888502.081 }, "end": { "local": "1986-06-02T05:48:09+04:00", "utc": "1986-06-02T01:48:09Z", "ms": 518060888502.081 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-06-03", "window": { "start": { "local": "1986-06-03T05:47:50+04:00", "utc": "1986-06-03T01:47:50Z", "ms": 518147269935.9458 }, "end": { "local": "1986-06-03T05:47:50+04:00", "utc": "1986-06-03T01:47:50Z", "ms": 518147269935.9458 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:37 on Mon 2 Jun to 08:23 on Tue 3 Jun.", "fact": "1986-06-02T02:36:45Z → 1986-06-03T04:22:39Z" }, { "step": "kaala", "text": "Sunrise is at 05:48 on the 2nd and 05:48 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2917 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Erbil, 1986: Tuesday 3 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": "1986-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-03", "confidence": "determinate" } ], "quote": "In Erbil, Aparā Ekādaśī 1986 falls on Tuesday 3 June. Ekādaśī runs from 06:37 on Mon 2 Jun to 08:23 on Tue 3 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-06-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26384, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-06-04T10:32:47+04:00", "utc": "1986-06-04T06:32:47Z", "ms": 518250767225.83966 }, "end": { "local": "1986-06-05T12:57:52+04:00", "utc": "1986-06-05T08:57:52Z", "ms": 518345871603.38196 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-04T10:32:47+04:00", "utc": "1986-06-04T06:32:47Z", "ms": 518250767225.83966 }, "end": { "local": "1986-06-05T12:57:52+04:00", "utc": "1986-06-05T08:57:52Z", "ms": 518345871603.38196 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-06-04", "window": { "start": { "local": "1986-06-04T20:17:01+04:00", "utc": "1986-06-04T16:17:01Z", "ms": 518285820578.3958 }, "end": { "local": "1986-06-04T21:33:03+04:00", "utc": "1986-06-04T17:33:03Z", "ms": 518290382899.927 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "1986-06-05", "window": { "start": { "local": "1986-06-05T20:17:36+04:00", "utc": "1986-06-05T16:17:36Z", "ms": 518372255689.3761 }, "end": { "local": "1986-06-05T21:33:32+04:00", "utc": "1986-06-05T17:33:32Z", "ms": 518376811545.1212 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:33 on Wed 4 Jun to 12:58 on Thu 5 Jun.", "fact": "1986-06-04T06:32:47Z → 1986-06-05T08:57:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:17–21:33 on the 4th, 20:18–21:34 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 76 of 76 minutes on the 4th and 0 of 76 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26384 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Wednesday 4 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": "1986-06-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-04", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Wednesday 4 June. Trayodaśī runs from 10:33 on Wed 4 Jun to 12:58 on Thu 5 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-06-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-06-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32946, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-06-05T12:57:52+04:00", "utc": "1986-06-05T08:57:52Z", "ms": 518345871603.38196 }, "end": { "local": "1986-06-06T15:29:25+04:00", "utc": "1986-06-06T11:29:25Z", "ms": 518441365039.29834 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-05T12:57:52+04:00", "utc": "1986-06-05T08:57:52Z", "ms": 518345871603.38196 }, "end": { "local": "1986-06-06T15:29:25+04:00", "utc": "1986-06-06T11:29:25Z", "ms": 518441365039.29834 } }, "kaala": "nishita", "days": [ { "local_date": "1986-06-05", "window": { "start": { "local": "1986-06-06T00:38:20+04:00", "utc": "1986-06-05T20:38:20Z", "ms": 518387900148.4202 }, "end": { "local": "1986-06-06T01:26:20+04:00", "utc": "1986-06-05T21:26:20Z", "ms": 518390780148.4202 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-06-06", "window": { "start": { "local": "1986-06-07T00:38:31+04:00", "utc": "1986-06-06T20:38:31Z", "ms": 518474311342.36743 }, "end": { "local": "1986-06-07T01:26:31+04:00", "utc": "1986-06-06T21:26:31Z", "ms": 518477191342.36743 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:58 on Thu 5 Jun to 15:29 on Fri 6 Jun.", "fact": "1986-06-05T08:57:52Z → 1986-06-06T11:29:25Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:38–01:26 on the 5th, 00:39–01:27 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32946 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Thursday 5 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": "1986-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-05", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Thursday 5 June. Caturdaśī runs from 12:58 on Thu 5 Jun to 15:29 on Fri 6 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33085, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-06-09T22:38:35+04:00", "utc": "1986-06-09T18:38:35Z", "ms": 518726315361.74066 }, "end": { "local": "1986-06-11T00:36:25+04:00", "utc": "1986-06-10T20:36:25Z", "ms": 518819784625.00916 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-09T22:38:35+04:00", "utc": "1986-06-09T18:38:35Z", "ms": 518726315361.74066 }, "end": { "local": "1986-06-11T00:36:25+04:00", "utc": "1986-06-10T20:36:25Z", "ms": 518819784625.00916 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-06-09", "window": { "start": { "local": "1986-06-09T12:39:10+04:00", "utc": "1986-06-09T08:39:10Z", "ms": 518690349934.4342 }, "end": { "local": "1986-06-09T13:27:10+04:00", "utc": "1986-06-09T09:27:10Z", "ms": 518693229934.4342 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-06-10", "window": { "start": { "local": "1986-06-10T12:39:21+04:00", "utc": "1986-06-10T08:39:21Z", "ms": 518776761364.77844 }, "end": { "local": "1986-06-10T13:27:21+04:00", "utc": "1986-06-10T09:27:21Z", "ms": 518779641364.77844 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 22:39 on Mon 9 Jun to 00:36 on Wed 11 Jun.", "fact": "1986-06-09T18:38:35Z → 1986-06-10T20:36:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 9th, 12:39–13:27 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33085 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Erbil, 1986: Tuesday 10 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-06-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-10", "confidence": "determinate" } ], "quote": "In Erbil, Rambhā Tṛtīyā 1986 falls on Tuesday 10 June. Tṛtīyā runs from 22:39 on Mon 9 Jun to 00:36 on Wed 11 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-06-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37558, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-06-11T00:36:25+04:00", "utc": "1986-06-10T20:36:25Z", "ms": 518819784625.00916 }, "end": { "local": "1986-06-12T02:13:47+04:00", "utc": "1986-06-11T22:13:47Z", "ms": 518912027067.99835 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-11T00:36:25+04:00", "utc": "1986-06-10T20:36:25Z", "ms": 518819784625.00916 }, "end": { "local": "1986-06-12T02:13:47+04:00", "utc": "1986-06-11T22:13:47Z", "ms": 518912027067.99835 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-06-11", "window": { "start": { "local": "1986-06-11T12:39:33+04:00", "utc": "1986-06-11T08:39:33Z", "ms": 518863173009.66235 }, "end": { "local": "1986-06-11T13:27:33+04:00", "utc": "1986-06-11T09:27:33Z", "ms": 518866053009.66235 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-06-12", "window": { "start": { "local": "1986-06-12T12:39:45+04:00", "utc": "1986-06-12T08:39:45Z", "ms": 518949584844.5542 }, "end": { "local": "1986-06-12T13:27:45+04:00", "utc": "1986-06-12T09:27:45Z", "ms": 518952464844.5542 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:36 on Wed 11 Jun to 02:14 on Thu 12 Jun.", "fact": "1986-06-10T20:36:25Z → 1986-06-11T22:13:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 11th, 12:40–13:28 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37558 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Wednesday 11 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": "1986-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-11", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Wednesday 11 June. Caturthī runs from 00:36 on Wed 11 Jun to 02:14 on Thu 12 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30816, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-06-13T03:25:35+04:00", "utc": "1986-06-12T23:25:35Z", "ms": 519002735357.936 }, "end": { "local": "1986-06-14T04:06:33+04:00", "utc": "1986-06-14T00:06:33Z", "ms": 519091592748.0977 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-13T03:25:35+04:00", "utc": "1986-06-12T23:25:35Z", "ms": 519002735357.936 }, "end": { "local": "1986-06-14T04:06:33+04:00", "utc": "1986-06-14T00:06:33Z", "ms": 519091592748.0977 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-06-13", "window": { "start": { "local": "1986-06-13T12:39:57+04:00", "utc": "1986-06-13T08:39:57Z", "ms": 519035996844.8995 }, "end": { "local": "1986-06-13T13:27:57+04:00", "utc": "1986-06-13T09:27:57Z", "ms": 519038876844.8995 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-06-14", "window": { "start": { "local": "1986-06-14T12:40:09+04:00", "utc": "1986-06-14T08:40:09Z", "ms": 519122408986.28577 }, "end": { "local": "1986-06-14T13:28:09+04:00", "utc": "1986-06-14T09:28:09Z", "ms": 519125288986.28577 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:26 on Fri 13 Jun to 04:07 on Sat 14 Jun.", "fact": "1986-06-12T23:25:35Z → 1986-06-14T00:06:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 13th, 12:40–13:28 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 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30816 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Erbil, 1986: Friday 13 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-13", "confidence": "determinate" } ], "quote": "In Erbil, Araṇya Gaurī Vrata 1986 falls on Friday 13 June. Ṣaṣṭhī runs from 03:26 on Fri 13 Jun to 04:07 on Sat 14 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30816, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-06-13T03:25:35+04:00", "utc": "1986-06-12T23:25:35Z", "ms": 519002735357.936 }, "end": { "local": "1986-06-14T04:06:33+04:00", "utc": "1986-06-14T00:06:33Z", "ms": 519091592748.0977 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-13T03:25:35+04:00", "utc": "1986-06-12T23:25:35Z", "ms": 519002735357.936 }, "end": { "local": "1986-06-14T04:06:33+04:00", "utc": "1986-06-14T00:06:33Z", "ms": 519091592748.0977 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-06-13", "window": { "start": { "local": "1986-06-13T12:39:57+04:00", "utc": "1986-06-13T08:39:57Z", "ms": 519035996844.8995 }, "end": { "local": "1986-06-13T13:27:57+04:00", "utc": "1986-06-13T09:27:57Z", "ms": 519038876844.8995 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-06-14", "window": { "start": { "local": "1986-06-14T12:40:09+04:00", "utc": "1986-06-14T08:40:09Z", "ms": 519122408986.28577 }, "end": { "local": "1986-06-14T13:28:09+04:00", "utc": "1986-06-14T09:28:09Z", "ms": 519125288986.28577 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:26 on Fri 13 Jun to 04:07 on Sat 14 Jun.", "fact": "1986-06-12T23:25:35Z → 1986-06-14T00:06:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:40–13:28 on the 13th, 12:40–13:28 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 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30816 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Erbil, 1986: Friday 13 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-13", "confidence": "determinate" } ], "quote": "In Erbil, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1986 falls on Friday 13 June. Ṣaṣṭhī runs from 03:26 on Fri 13 Jun to 04:07 on Sat 14 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-06-18", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19206, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-06-18T00:26:30+04:00", "utc": "1986-06-17T20:26:30Z", "ms": 519423989822.69586 }, "end": { "local": "1986-06-18T21:53:11+04:00", "utc": "1986-06-18T17:53:11Z", "ms": 519501190555.82837 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-18T00:26:30+04:00", "utc": "1986-06-17T20:26:30Z", "ms": 519423989822.69586 }, "end": { "local": "1986-06-18T21:53:11+04:00", "utc": "1986-06-18T17:53:11Z", "ms": 519501190555.82837 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-06-18", "window": { "start": { "local": "1986-06-18T05:46:36+04:00", "utc": "1986-06-18T01:46:36Z", "ms": 519443195756.88086 }, "end": { "local": "1986-06-18T05:46:36+04:00", "utc": "1986-06-18T01:46:36Z", "ms": 519443195756.88086 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-06-19", "window": { "start": { "local": "1986-06-19T05:46:44+04:00", "utc": "1986-06-19T01:46:44Z", "ms": 519529603940.76276 }, "end": { "local": "1986-06-19T05:46:44+04:00", "utc": "1986-06-19T01:46:44Z", "ms": 519529603940.76276 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:26 on Wed 18 Jun to 21:53 on Wed 18 Jun.", "fact": "1986-06-17T20:26:30Z → 1986-06-18T17:53:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:47 on the 18th and 05:47 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19206 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Erbil, 1986: Wednesday 18 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": "1986-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-18", "confidence": "determinate" } ], "quote": "In Erbil, Nirjalā Ekādaśī 1986 falls on Wednesday 18 June. Ekādaśī runs from 00:26 on Wed 18 Jun to 21:53 on Wed 18 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19120, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-06-18T21:53:11+04:00", "utc": "1986-06-18T17:53:11Z", "ms": 519501190555.82837 }, "end": { "local": "1986-06-19T18:47:51+04:00", "utc": "1986-06-19T14:47:51Z", "ms": 519576471351.8442 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-18T21:53:11+04:00", "utc": "1986-06-18T17:53:11Z", "ms": 519501190555.82837 }, "end": { "local": "1986-06-19T18:47:51+04:00", "utc": "1986-06-19T14:47:51Z", "ms": 519576471351.8442 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-06-18", "window": { "start": { "local": "1986-06-18T12:40:58+04:00", "utc": "1986-06-18T08:40:58Z", "ms": 519468058490.14087 }, "end": { "local": "1986-06-18T13:28:58+04:00", "utc": "1986-06-18T09:28:58Z", "ms": 519470938490.14087 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-06-19", "window": { "start": { "local": "1986-06-19T12:41:11+04:00", "utc": "1986-06-19T08:41:11Z", "ms": 519554470989.8347 }, "end": { "local": "1986-06-19T13:29:11+04:00", "utc": "1986-06-19T09:29:11Z", "ms": 519557350989.8347 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:53 on Wed 18 Jun to 18:48 on Thu 19 Jun.", "fact": "1986-06-18T17:53:11Z → 1986-06-19T14:47:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:41–13:29 on the 18th, 12:41–13:29 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19120 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Erbil, 1986: Thursday 19 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-19", "confidence": "determinate" } ], "quote": "In Erbil, Śrī Rāma Dvādaśī 1986 falls on Thursday 19 June. Dvādaśī runs from 21:53 on Wed 18 Jun to 18:48 on Thu 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-06-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5747, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-06-19T18:47:51+04:00", "utc": "1986-06-19T14:47:51Z", "ms": 519576471351.8442 }, "end": { "local": "1986-06-20T15:17:59+04:00", "utc": "1986-06-20T11:17:59Z", "ms": 519650279435.26904 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-19T18:47:51+04:00", "utc": "1986-06-19T14:47:51Z", "ms": 519576471351.8442 }, "end": { "local": "1986-06-20T15:17:59+04:00", "utc": "1986-06-20T11:17:59Z", "ms": 519650279435.26904 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-06-19", "window": { "start": { "local": "1986-06-19T20:23:38+04:00", "utc": "1986-06-19T16:23:38Z", "ms": 519582218038.90674 }, "end": { "local": "1986-06-19T21:38:44+04:00", "utc": "1986-06-19T17:38:44Z", "ms": 519586724123.88586 } }, "covered_min": 75, "window_min": 75, "qualifies": true }, { "local_date": "1986-06-20", "window": { "start": { "local": "1986-06-20T20:23:53+04:00", "utc": "1986-06-20T16:23:53Z", "ms": 519668633320.4598 }, "end": { "local": "1986-06-20T21:38:59+04:00", "utc": "1986-06-20T17:38:59Z", "ms": 519673138870.3211 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:48 on Thu 19 Jun to 15:18 on Fri 20 Jun.", "fact": "1986-06-19T14:47:51Z → 1986-06-20T11:17:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:24–21:39 on the 19th, 20:24–21:39 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 75 of 75 minutes on the 19th and 0 of 75 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5747 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Thursday 19 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": "1986-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-19", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Thursday 19 June. Trayodaśī runs from 18:48 on Thu 19 Jun to 15:18 on Fri 20 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-06-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31892, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-06-21T11:32:35+04:00", "utc": "1986-06-21T07:32:35Z", "ms": 519723155359.3483 }, "end": { "local": "1986-06-22T07:41:46+04:00", "utc": "1986-06-22T03:41:46Z", "ms": 519795706160.2564 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-21T11:32:35+04:00", "utc": "1986-06-21T07:32:35Z", "ms": 519723155359.3483 }, "end": { "local": "1986-06-22T07:41:46+04:00", "utc": "1986-06-22T03:41:46Z", "ms": 519795706160.2564 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-06-21", "window": { "start": { "local": "1986-06-21T20:24:07+04:00", "utc": "1986-06-21T16:24:07Z", "ms": 519755047049.7293 }, "end": { "local": "1986-06-21T21:39:12+04:00", "utc": "1986-06-21T17:39:12Z", "ms": 519759552473.26074 } }, "covered_min": 75, "window_min": 75, "qualifies": true }, { "local_date": "1986-06-22", "window": { "start": { "local": "1986-06-22T20:24:19+04:00", "utc": "1986-06-22T16:24:19Z", "ms": 519841459209.6776 }, "end": { "local": "1986-06-22T21:39:25+04:00", "utc": "1986-06-22T17:39:25Z", "ms": 519845964915.38245 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:33 on Sat 21 Jun to 07:42 on Sun 22 Jun.", "fact": "1986-06-21T07:32:35Z → 1986-06-22T03:41:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:24–21:39 on the 21st, 20:24–21:39 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 75 of 75 minutes on the 21st and 0 of 75 on the 22nd.", "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 31892 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Erbil, 1986: Saturday 21 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-21", "confidence": "determinate" } ], "quote": "In Erbil, Vaṭa Sāvitrī Vrata 1986 falls on Saturday 21 June. Pūrṇimā runs from 11:33 on Sat 21 Jun to 07:42 on Sun 22 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-06-24", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5787, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-06-24T21:25:21+04:00", "utc": "1986-06-24T17:25:21Z", "ms": 520017921115.0481 }, "end": { "local": "1986-06-25T19:00:22+04:00", "utc": "1986-06-25T15:00:22Z", "ms": 520095622478.4713 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-06-24T21:25:21+04:00", "utc": "1986-06-24T17:25:21Z", "ms": 520017921115.0481 }, "end": { "local": "1986-06-25T19:00:22+04:00", "utc": "1986-06-25T15:00:22Z", "ms": 520095622478.4713 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-06-24", "window": { "start": { "local": "1986-06-24T23:01:48+04:00", "utc": "1986-06-24T19:01:48Z", "ms": 520023707627.8523 }, "end": { "local": "1986-06-24T23:01:48+04:00", "utc": "1986-06-24T19:01:48Z", "ms": 520023707627.8523 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-06-25", "window": { "start": { "local": "1986-06-25T23:38:58+04:00", "utc": "1986-06-25T19:38:58Z", "ms": 520112338291.5654 }, "end": { "local": "1986-06-25T23:38:58+04:00", "utc": "1986-06-25T19:38:58Z", "ms": 520112338291.5654 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:25 on Tue 24 Jun to 19:00 on Wed 25 Jun.", "fact": "1986-06-24T17:25:21Z → 1986-06-25T15:00:22Z" }, { "step": "kaala", "text": "Moonrise is at 23:02 on the 24th and 23:39 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5787 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Tuesday 24 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": "1986-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-06-24", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Tuesday 24 June. Caturthī runs from 21:25 on Tue 24 Jun to 19:00 on Wed 25 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-07-02", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22861, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-07-01T21:04:44+04:00", "utc": "1986-07-01T17:04:44Z", "ms": 520621483972.7723 }, "end": { "local": "1986-07-02T23:30:11+04:00", "utc": "1986-07-02T19:30:11Z", "ms": 520716611293.2289 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-01T21:04:44+04:00", "utc": "1986-07-01T17:04:44Z", "ms": 520621483972.7723 }, "end": { "local": "1986-07-02T23:30:11+04:00", "utc": "1986-07-02T19:30:11Z", "ms": 520716611293.2289 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-07-02", "window": { "start": { "local": "1986-07-02T05:50:44+04:00", "utc": "1986-07-02T01:50:44Z", "ms": 520653043982.1983 }, "end": { "local": "1986-07-02T05:50:44+04:00", "utc": "1986-07-02T01:50:44Z", "ms": 520653043982.1983 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-07-03", "window": { "start": { "local": "1986-07-03T05:51:12+04:00", "utc": "1986-07-03T01:51:12Z", "ms": 520739471842.7819 }, "end": { "local": "1986-07-03T05:51:12+04:00", "utc": "1986-07-03T01:51:12Z", "ms": 520739471842.7819 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:05 on Tue 1 Jul to 23:30 on Wed 2 Jul.", "fact": "1986-07-01T17:04:44Z → 1986-07-02T19:30:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:51 on the 2nd and 05:51 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22861 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Erbil, 1986: Wednesday 2 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": "1986-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-02", "confidence": "determinate" } ], "quote": "In Erbil, Yoginī Ekādaśī 1986 falls on Wednesday 2 July. Ekādaśī runs from 21:05 on Tue 1 Jul to 23:30 on Wed 2 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-07-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15761, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-07-04T02:03:02+04:00", "utc": "1986-07-03T22:03:02Z", "ms": 520812181633.91565 }, "end": { "local": "1986-07-05T04:32:49+04:00", "utc": "1986-07-05T00:32:49Z", "ms": 520907569435.53467 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-04T02:03:02+04:00", "utc": "1986-07-03T22:03:02Z", "ms": 520812181633.91565 }, "end": { "local": "1986-07-05T04:32:49+04:00", "utc": "1986-07-05T00:32:49Z", "ms": 520907569435.53467 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-07-03", "window": { "start": { "local": "1986-07-03T20:24:45+04:00", "utc": "1986-07-03T16:24:45Z", "ms": 520791884868.07544 }, "end": { "local": "1986-07-03T21:40:20+04:00", "utc": "1986-07-03T17:40:20Z", "ms": 520796420336.85626 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "1986-07-04", "window": { "start": { "local": "1986-07-04T20:24:37+04:00", "utc": "1986-07-04T16:24:37Z", "ms": 520878277013.022 }, "end": { "local": "1986-07-04T21:40:18+04:00", "utc": "1986-07-04T17:40:18Z", "ms": 520882817553.60016 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:03 on Fri 4 Jul to 04:33 on Sat 5 Jul.", "fact": "1986-07-03T22:03:02Z → 1986-07-05T00:32:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:25–21:40 on the 3rd, 20:25–21:40 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 3rd and 76 of 76 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15761 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Friday 4 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": "1986-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-04", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Friday 4 July. Trayodaśī runs from 02:03 on Fri 4 Jul to 04:33 on Sat 5 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-07-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-07-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10825, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-07-05T04:32:49+04:00", "utc": "1986-07-05T00:32:49Z", "ms": 520907569435.53467 }, "end": { "local": "1986-07-06T06:51:47+04:00", "utc": "1986-07-06T02:51:47Z", "ms": 521002307474.3559 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-05T04:32:49+04:00", "utc": "1986-07-05T00:32:49Z", "ms": 520907569435.53467 }, "end": { "local": "1986-07-06T06:51:47+04:00", "utc": "1986-07-06T02:51:47Z", "ms": 521002307474.3559 } }, "kaala": "nishita", "days": [ { "local_date": "1986-07-04", "window": { "start": { "local": "1986-07-05T00:44:24+04:00", "utc": "1986-07-04T20:44:24Z", "ms": 520893864040.1902 }, "end": { "local": "1986-07-05T01:32:24+04:00", "utc": "1986-07-04T21:32:24Z", "ms": 520896744040.1902 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-07-05", "window": { "start": { "local": "1986-07-06T00:44:35+04:00", "utc": "1986-07-05T20:44:35Z", "ms": 520980274883.99286 }, "end": { "local": "1986-07-06T01:32:35+04:00", "utc": "1986-07-05T21:32:35Z", "ms": 520983154883.99286 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:33 on Sat 5 Jul to 06:52 on Sun 6 Jul.", "fact": "1986-07-05T00:32:49Z → 1986-07-06T02:51:47Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:44–01:32 on the 4th, 00:45–01:33 on the 5th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10825 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Saturday 5 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": "1986-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-05", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Saturday 5 July. Caturdaśī runs from 04:33 on Sat 5 Jul to 06:52 on Sun 6 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-07-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2555, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1986-07-08T10:38:57+04:00", "utc": "1986-07-08T06:38:57Z", "ms": 521188736772.2223 }, "end": { "local": "1986-07-09T12:02:22+04:00", "utc": "1986-07-09T08:02:22Z", "ms": 521280142084.99384 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-08T10:38:57+04:00", "utc": "1986-07-08T06:38:57Z", "ms": 521188736772.2223 }, "end": { "local": "1986-07-09T12:02:22+04:00", "utc": "1986-07-09T08:02:22Z", "ms": 521280142084.99384 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-07-08", "window": { "start": { "local": "1986-07-08T12:44:48+04:00", "utc": "1986-07-08T08:44:48Z", "ms": 521196288085.213 }, "end": { "local": "1986-07-08T13:32:48+04:00", "utc": "1986-07-08T09:32:48Z", "ms": 521199168085.213 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-07-09", "window": { "start": { "local": "1986-07-09T12:44:57+04:00", "utc": "1986-07-09T08:44:57Z", "ms": 521282696948.45154 }, "end": { "local": "1986-07-09T13:32:57+04:00", "utc": "1986-07-09T09:32:57Z", "ms": 521285576948.45154 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:39 on Tue 8 Jul to 12:02 on Wed 9 Jul.", "fact": "1986-07-08T06:38:57Z → 1986-07-09T08:02:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 8th, 12:45–13:33 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2555 s" }, { "step": "ruling", "text": "Rathayātrā, Erbil, 1986: Tuesday 8 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": "1986-07-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-09", "confidence": "determinate" } ], "quote": "In Erbil, Rathayātrā 1986 falls on Tuesday 8 July. Dvitīyā runs from 10:39 on Tue 8 Jul to 12:02 on Wed 9 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-07-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 474, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-07-10T13:03:40+04:00", "utc": "1986-07-10T09:03:40Z", "ms": 521370220080.71155 }, "end": { "local": "1986-07-11T13:41:08+04:00", "utc": "1986-07-11T09:41:08Z", "ms": 521458867666.7169 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-10T13:03:40+04:00", "utc": "1986-07-10T09:03:40Z", "ms": 521370220080.71155 }, "end": { "local": "1986-07-11T13:41:08+04:00", "utc": "1986-07-11T09:41:08Z", "ms": 521458867666.7169 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-07-10", "window": { "start": { "local": "1986-07-10T12:45:05+04:00", "utc": "1986-07-10T08:45:05Z", "ms": 521369105400.1837 }, "end": { "local": "1986-07-10T13:33:05+04:00", "utc": "1986-07-10T09:33:05Z", "ms": 521371985400.1837 } }, "covered_min": 29, "window_min": 48, "qualifies": true }, { "local_date": "1986-07-11", "window": { "start": { "local": "1986-07-11T12:45:13+04:00", "utc": "1986-07-11T08:45:13Z", "ms": 521455513420.1571 }, "end": { "local": "1986-07-11T13:33:13+04:00", "utc": "1986-07-11T09:33:13Z", "ms": 521458393420.1571 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:04 on Thu 10 Jul to 13:41 on Fri 11 Jul.", "fact": "1986-07-10T09:03:40Z → 1986-07-11T09:41:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 10th, 12:45–13:33 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 29 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 474 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Friday 11 July.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-07-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-11", "confidence": "boundary" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Friday 11 July. Caturthī runs from 13:04 on Thu 10 Jul to 13:41 on Fri 11 Jul and covers all of madhyāhna that midday. It also reaches the previous midday for 29 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/erbil/festivals/1986/vinayaka-chaturthi?on=1986-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 474, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-07-11T13:41:08+04:00", "utc": "1986-07-11T09:41:08Z", "ms": 521458867666.7169 }, "end": { "local": "1986-07-12T13:52:29+04:00", "utc": "1986-07-12T09:52:29Z", "ms": 521545949108.88617 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-11T13:41:08+04:00", "utc": "1986-07-11T09:41:08Z", "ms": 521458867666.7169 }, "end": { "local": "1986-07-12T13:52:29+04:00", "utc": "1986-07-12T09:52:29Z", "ms": 521545949108.88617 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-07-11", "window": { "start": { "local": "1986-07-11T12:45:13+04:00", "utc": "1986-07-11T08:45:13Z", "ms": 521455513420.1571 }, "end": { "local": "1986-07-11T13:33:13+04:00", "utc": "1986-07-11T09:33:13Z", "ms": 521458393420.1571 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-07-12", "window": { "start": { "local": "1986-07-12T12:45:21+04:00", "utc": "1986-07-12T08:45:21Z", "ms": 521541920989.1649 }, "end": { "local": "1986-07-12T13:33:21+04:00", "utc": "1986-07-12T09:33:21Z", "ms": 521544800989.1649 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 13:41 on Fri 11 Jul to 13:52 on Sat 12 Jul.", "fact": "1986-07-11T09:41:08Z → 1986-07-12T09:52:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 11th, 12:45–13:33 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 474 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Erbil, 1986: Saturday 12 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": "1986-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-12", "confidence": "determinate" } ], "quote": "In Erbil, Skanda Pañcamī 1986 falls on Saturday 12 July. Pañcamī runs from 13:41 on Fri 11 Jul to 13:52 on Sat 12 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-14", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 55, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-07-13T13:35:06+04:00", "utc": "1986-07-13T09:35:06Z", "ms": 521631306236.8292 }, "end": { "local": "1986-07-14T12:46:30+04:00", "utc": "1986-07-14T08:46:30Z", "ms": 521714789873.4464 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-13T13:35:06+04:00", "utc": "1986-07-13T09:35:06Z", "ms": 521631306236.8292 }, "end": { "local": "1986-07-14T12:46:30+04:00", "utc": "1986-07-14T08:46:30Z", "ms": 521714789873.4464 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-07-13", "window": { "start": { "local": "1986-07-13T12:45:28+04:00", "utc": "1986-07-13T08:45:28Z", "ms": 521628328089.2303 }, "end": { "local": "1986-07-13T13:33:28+04:00", "utc": "1986-07-13T09:33:28Z", "ms": 521631208089.2303 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-07-14", "window": { "start": { "local": "1986-07-14T12:45:35+04:00", "utc": "1986-07-14T08:45:35Z", "ms": 521714734703.79517 }, "end": { "local": "1986-07-14T13:33:35+04:00", "utc": "1986-07-14T09:33:35Z", "ms": 521717614703.79517 } }, "covered_min": 1, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:35 on Sun 13 Jul to 12:46 on Mon 14 Jul.", "fact": "1986-07-13T09:35:06Z → 1986-07-14T08:46:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 13th, 12:46–13:34 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 1 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 55 s < 300 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Erbil, 1986: Monday 14 July.", "fact": "confidence: boundary (margin)" } ], "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": "1986-07-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-13", "confidence": "determinate" } ], "quote": "In Erbil, Vivasvat Saptamī 1986 falls on Monday 14 July. Saptamī runs from 13:35 on Sun 13 Jul to 12:46 on Mon 14 Jul and covers 1 of 48 minutes of madhyāhna that midday. It is 0 min 55 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-07-17", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3944, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-07-17T07:05:11+04:00", "utc": "1986-07-17T03:05:11Z", "ms": 521953511398.9697 }, "end": { "local": "1986-07-18T04:12:47+04:00", "utc": "1986-07-18T00:12:47Z", "ms": 522029566968.081 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-17T07:05:11+04:00", "utc": "1986-07-17T03:05:11Z", "ms": 521953511398.9697 }, "end": { "local": "1986-07-18T04:12:47+04:00", "utc": "1986-07-18T00:12:47Z", "ms": 522029566968.081 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-07-17", "window": { "start": { "local": "1986-07-17T05:59:28+04:00", "utc": "1986-07-17T01:59:28Z", "ms": 521949567728.2697 }, "end": { "local": "1986-07-17T05:59:28+04:00", "utc": "1986-07-17T01:59:28Z", "ms": 521949567728.2697 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-07-18", "window": { "start": { "local": "1986-07-18T06:00:09+04:00", "utc": "1986-07-18T02:00:09Z", "ms": 522036009115.1105 }, "end": { "local": "1986-07-18T06:00:09+04:00", "utc": "1986-07-18T02:00:09Z", "ms": 522036009115.1105 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:05 on Thu 17 Jul to 04:13 on Fri 18 Jul.", "fact": "1986-07-17T03:05:11Z → 1986-07-18T00:12:47Z" }, { "step": "kaala", "text": "Sunrise is at 05:59 on the 17th and 06:00 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 3944 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Erbil, 1986: Thursday 17 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": "1986-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-17", "confidence": "determinate" } ], "quote": "In Erbil, Hariśayanī Ekādaśī 1986 falls on Thursday 17 July. Ekādaśī runs from 07:05 on Thu 17 Jul to 04:13 on Fri 18 Jul, and is current at sunrise on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-07-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-07-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-19", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 205, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-07-19T00:59:33+04:00", "utc": "1986-07-18T20:59:33Z", "ms": 522104372930.19257 }, "end": { "local": "1986-07-19T21:33:23+04:00", "utc": "1986-07-19T17:33:23Z", "ms": 522178403154.3439 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-19T00:59:33+04:00", "utc": "1986-07-18T20:59:33Z", "ms": 522104372930.19257 }, "end": { "local": "1986-07-19T21:33:23+04:00", "utc": "1986-07-19T17:33:23Z", "ms": 522178403154.3439 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-07-18", "window": { "start": { "local": "1986-07-18T20:19:43+04:00", "utc": "1986-07-18T16:19:43Z", "ms": 522087582955.50385 }, "end": { "local": "1986-07-18T21:37:12+04:00", "utc": "1986-07-18T17:37:12Z", "ms": 522092232041.263 } }, "covered_min": 0, "window_min": 77, "qualifies": false }, { "local_date": "1986-07-19", "window": { "start": { "local": "1986-07-19T20:19:09+04:00", "utc": "1986-07-19T16:19:09Z", "ms": 522173948970.8224 }, "end": { "local": "1986-07-19T21:36:48+04:00", "utc": "1986-07-19T17:36:48Z", "ms": 522178608261.0527 } }, "covered_min": 74, "window_min": 78, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:00 on Sat 19 Jul to 21:33 on Sat 19 Jul.", "fact": "1986-07-18T20:59:33Z → 1986-07-19T17:33:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:20–21:37 on the 18th, 20:19–21:37 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 77 minutes on the 18th and 74 of 78 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 205 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Saturday 19 July.", "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": "1986-07-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-19", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Saturday 19 July. Trayodaśī runs from 01:00 on Sat 19 Jul to 21:33 on Sat 19 Jul and covers 74 of 78 minutes of pradoṣa that evening. It is 3 min 25 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-07-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2184, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 } }, "kaala": "sayahna", "days": [ { "local_date": "1986-07-20", "window": { "start": { "local": "1986-07-20T17:27:09+04:00", "utc": "1986-07-20T13:27:09Z", "ms": 522250029389.7145 }, "end": { "local": "1986-07-20T20:18:33+04:00", "utc": "1986-07-20T16:18:33Z", "ms": 522260313325.2557 } }, "covered_min": 135, "window_min": 171, "qualifies": true }, { "local_date": "1986-07-21", "window": { "start": { "local": "1986-07-21T17:26:48+04:00", "utc": "1986-07-21T13:26:48Z", "ms": 522336408177.7026 }, "end": { "local": "1986-07-21T20:17:56+04:00", "utc": "1986-07-21T16:17:56Z", "ms": 522346676039.0758 } }, "covered_min": 0, "window_min": 171, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul.", "fact": "1986-07-20T14:03:33Z → 1986-07-21T10:40:12Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:27–20:19 on the 20th, 17:27–20:18 on the 21st.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 135 of 171 minutes on the 20th and 0 of 171 on the 21st.", "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 2184 s" }, { "step": "ruling", "text": "Kokilā Vrata, Erbil, 1986: Sunday 20 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": "1986-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-20", "confidence": "determinate" } ], "quote": "In Erbil, Kokilā Vrata 1986 falls on Sunday 20 July. Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul and covers 135 of 171 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8100, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-07-20", "window": { "start": { "local": "1986-07-20T20:18:33+04:00", "utc": "1986-07-20T16:18:33Z", "ms": 522260313325.2557 }, "end": { "local": "1986-07-20T21:36:23+04:00", "utc": "1986-07-20T17:36:23Z", "ms": 522264983112.84955 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1986-07-21", "window": { "start": { "local": "1986-07-21T20:17:56+04:00", "utc": "1986-07-21T16:17:56Z", "ms": 522346676039.0758 }, "end": { "local": "1986-07-21T21:35:57+04:00", "utc": "1986-07-21T17:35:57Z", "ms": 522351356610.5361 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul.", "fact": "1986-07-20T14:03:33Z → 1986-07-21T10:40:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:19–21:36 on the 20th, 20:18–21:36 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 78 of 78 minutes on the 20th and 0 of 78 on the 21st.", "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 8100 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Erbil, 1986: Sunday 20 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": "1986-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-20", "confidence": "determinate" } ], "quote": "In Erbil, Śiva Śayanotsava 1986 falls on Sunday 20 July. Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20808, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 } }, "kaala": "udaya-3", "days": [ { "local_date": "1986-07-20", "window": { "start": { "local": "1986-07-20T06:01:34+04:00", "utc": "1986-07-20T02:01:34Z", "ms": 522208893647.54974 }, "end": { "local": "1986-07-20T08:52:58+04:00", "utc": "1986-07-20T04:52:58Z", "ms": 522219177583.09094 } }, "covered_min": 0, "window_min": 171, "qualifies": false }, { "local_date": "1986-07-21", "window": { "start": { "local": "1986-07-21T06:02:17+04:00", "utc": "1986-07-21T02:02:17Z", "ms": 522295336732.2098 }, "end": { "local": "1986-07-21T08:53:25+04:00", "utc": "1986-07-21T04:53:25Z", "ms": 522305604593.583 } }, "covered_min": 171, "window_min": 171, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul.", "fact": "1986-07-20T14:03:33Z → 1986-07-21T10:40:12Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:02–08:53 on the 20th, 06:02–08:53 on the 21st.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 171 minutes on the 20th and 171 of 171 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20808 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Erbil, 1986: Monday 21 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-21", "confidence": "determinate" } ], "quote": "In Erbil, Vyāsa Pūjā 1986 falls on Monday 21 July. Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3966, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1986-07-20T18:03:33+04:00", "utc": "1986-07-20T14:03:33Z", "ms": 522252213026.65497 }, "end": { "local": "1986-07-21T14:40:12+04:00", "utc": "1986-07-21T10:40:12Z", "ms": 522326412391.267 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-07-20", "window": { "start": { "local": "1986-07-20T12:46:03+04:00", "utc": "1986-07-20T08:46:03Z", "ms": 522233163486.4027 }, "end": { "local": "1986-07-20T13:34:03+04:00", "utc": "1986-07-20T09:34:03Z", "ms": 522236043486.4027 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-07-21", "window": { "start": { "local": "1986-07-21T12:46:06+04:00", "utc": "1986-07-21T08:46:06Z", "ms": 522319566385.6428 }, "end": { "local": "1986-07-21T13:34:06+04:00", "utc": "1986-07-21T09:34:06Z", "ms": 522322446385.6428 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul.", "fact": "1986-07-20T14:03:33Z → 1986-07-21T10:40:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:46–13:34 on the 20th, 12:46–13:34 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3966 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Erbil, 1986: Monday 21 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": "1986-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-21", "confidence": "boundary" } ], "quote": "In Erbil, Guru Pūrṇimā 1986 falls on Monday 21 July. Pūrṇimā runs from 18:04 on Sun 20 Jul to 14:40 on Mon 21 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35927, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1986-07-22T11:33:56+04:00", "utc": "1986-07-22T07:33:56Z", "ms": 522401635902.92523 }, "end": { "local": "1986-07-23T08:55:09+04:00", "utc": "1986-07-23T04:55:09Z", "ms": 522478508547.38306 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-07-22T11:33:56+04:00", "utc": "1986-07-22T07:33:56Z", "ms": 522401635902.92523 }, "end": { "local": "1986-07-23T08:55:09+04:00", "utc": "1986-07-23T04:55:09Z", "ms": 522478508547.38306 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-07-22", "window": { "start": { "local": "1986-07-22T21:32:43+04:00", "utc": "1986-07-22T17:32:43Z", "ms": 522437562728.03253 }, "end": { "local": "1986-07-22T21:32:43+04:00", "utc": "1986-07-22T17:32:43Z", "ms": 522437562728.03253 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-07-23", "window": { "start": { "local": "1986-07-23T22:06:44+04:00", "utc": "1986-07-23T18:06:44Z", "ms": 522526003758.03375 }, "end": { "local": "1986-07-23T22:06:44+04:00", "utc": "1986-07-23T18:06:44Z", "ms": 522526003758.03375 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:34 on Tue 22 Jul to 08:55 on Wed 23 Jul.", "fact": "1986-07-22T07:33:56Z → 1986-07-23T04:55:09Z" }, { "step": "kaala", "text": "Moonrise is at 21:33 on the 22nd and 22:07 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 22nd and is not on the 23rd.", "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 35927 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Erbil, 1986: Tuesday 22 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": "1986-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-22", "confidence": "determinate" } ], "quote": "In Erbil, Aśūnya Śayana Vrata (Āṣāḍha) 1986 falls on Tuesday 22 July. Dvitīyā runs from 11:34 on Tue 22 Jul to 08:55 on Wed 23 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-07-24", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25256, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-07-24T06:53:23+04:00", "utc": "1986-07-24T02:53:23Z", "ms": 522557602824.6625 }, "end": { "local": "1986-07-25T05:36:25+04:00", "utc": "1986-07-25T01:36:25Z", "ms": 522639384975.9649 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-07-24T06:53:23+04:00", "utc": "1986-07-24T02:53:23Z", "ms": 522557602824.6625 }, "end": { "local": "1986-07-25T05:36:25+04:00", "utc": "1986-07-25T01:36:25Z", "ms": 522639384975.9649 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-07-23", "window": { "start": { "local": "1986-07-23T22:06:44+04:00", "utc": "1986-07-23T18:06:44Z", "ms": 522526003758.03375 }, "end": { "local": "1986-07-23T22:06:44+04:00", "utc": "1986-07-23T18:06:44Z", "ms": 522526003758.03375 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-07-24", "window": { "start": { "local": "1986-07-24T22:35:29+04:00", "utc": "1986-07-24T18:35:29Z", "ms": 522614128887.2977 }, "end": { "local": "1986-07-24T22:35:29+04:00", "utc": "1986-07-24T18:35:29Z", "ms": 522614128887.2977 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:53 on Thu 24 Jul to 05:36 on Fri 25 Jul.", "fact": "1986-07-24T02:53:23Z → 1986-07-25T01:36:25Z" }, { "step": "kaala", "text": "Moonrise is at 22:07 on the 23rd and 22:35 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25256 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Thursday 24 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": "1986-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-07-24", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Thursday 24 July. Caturthī runs from 06:53 on Thu 24 Jul to 05:36 on Fri 25 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-07-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-08-01", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25738, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-07-31T13:18:50+04:00", "utc": "1986-07-31T09:18:50Z", "ms": 523185529530.1035 }, "end": { "local": "1986-08-01T15:47:08+04:00", "utc": "1986-08-01T11:47:08Z", "ms": 523280827835.8934 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-07-31T13:18:50+04:00", "utc": "1986-07-31T09:18:50Z", "ms": 523185529530.1035 }, "end": { "local": "1986-08-01T15:47:08+04:00", "utc": "1986-08-01T11:47:08Z", "ms": 523280827835.8934 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-07-31", "window": { "start": { "local": "1986-07-31T06:09:51+04:00", "utc": "1986-07-31T02:09:51Z", "ms": 523159791180.4669 }, "end": { "local": "1986-07-31T06:09:51+04:00", "utc": "1986-07-31T02:09:51Z", "ms": 523159791180.4669 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-08-01", "window": { "start": { "local": "1986-08-01T06:10:38+04:00", "utc": "1986-08-01T02:10:38Z", "ms": 523246238392.6542 }, "end": { "local": "1986-08-01T06:10:38+04:00", "utc": "1986-08-01T02:10:38Z", "ms": 523246238392.6542 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:19 on Thu 31 Jul to 15:47 on Fri 1 Aug.", "fact": "1986-07-31T09:18:50Z → 1986-08-01T11:47:08Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 31st and 06:11 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 31st and is 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 25738 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Erbil, 1986: Friday 1 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": "1986-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-01", "confidence": "determinate" } ], "quote": "In Erbil, Kāmikā Ekādaśī 1986 falls on Friday 1 August. Ekādaśī runs from 13:19 on Thu 31 Jul to 15:47 on Fri 1 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-08-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 507, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-08-02T18:03:12+04:00", "utc": "1986-08-02T14:03:12Z", "ms": 523375391510.0537 }, "end": { "local": "1986-08-03T19:59:05+04:00", "utc": "1986-08-03T15:59:05Z", "ms": 523468744993.5438 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-02T18:03:12+04:00", "utc": "1986-08-02T14:03:12Z", "ms": 523375391510.0537 }, "end": { "local": "1986-08-03T19:59:05+04:00", "utc": "1986-08-03T15:59:05Z", "ms": 523468744993.5438 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-08-02", "window": { "start": { "local": "1986-08-02T20:08:28+04:00", "utc": "1986-08-02T16:08:28Z", "ms": 523382908241.79926 }, "end": { "local": "1986-08-02T21:28:58+04:00", "utc": "1986-08-02T17:28:58Z", "ms": 523387738266.52356 } }, "covered_min": 81, "window_min": 81, "qualifies": true }, { "local_date": "1986-08-03", "window": { "start": { "local": "1986-08-03T20:07:32+04:00", "utc": "1986-08-03T16:07:32Z", "ms": 523469251549.77423 }, "end": { "local": "1986-08-03T21:28:16+04:00", "utc": "1986-08-03T17:28:16Z", "ms": 523474095502.76117 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:03 on Sat 2 Aug to 19:59 on Sun 3 Aug.", "fact": "1986-08-02T14:03:12Z → 1986-08-03T15:59:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:08–21:29 on the 2nd, 20:08–21:28 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 81 of 81 minutes on the 2nd and 0 of 81 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 507 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Saturday 2 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": "1986-08-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-02", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Saturday 2 August. Trayodaśī runs from 18:03 on Sat 2 Aug to 19:59 on Sun 3 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-08-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-08-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11746, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-08-03T19:59:05+04:00", "utc": "1986-08-03T15:59:05Z", "ms": 523468744993.5438 }, "end": { "local": "1986-08-04T21:30:25+04:00", "utc": "1986-08-04T17:30:25Z", "ms": 523560625352.38806 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-03T19:59:05+04:00", "utc": "1986-08-03T15:59:05Z", "ms": 523468744993.5438 }, "end": { "local": "1986-08-04T21:30:25+04:00", "utc": "1986-08-04T17:30:25Z", "ms": 523560625352.38806 } }, "kaala": "nishita", "days": [ { "local_date": "1986-08-03", "window": { "start": { "local": "1986-08-04T00:46:16+04:00", "utc": "1986-08-03T20:46:16Z", "ms": 523485976373.4753 }, "end": { "local": "1986-08-04T01:34:16+04:00", "utc": "1986-08-03T21:34:16Z", "ms": 523488856373.4753 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-08-04", "window": { "start": { "local": "1986-08-05T00:46:11+04:00", "utc": "1986-08-04T20:46:11Z", "ms": 523572371310.6639 }, "end": { "local": "1986-08-05T01:34:11+04:00", "utc": "1986-08-04T21:34:11Z", "ms": 523575251310.6639 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:59 on Sun 3 Aug to 21:30 on Mon 4 Aug.", "fact": "1986-08-03T15:59:05Z → 1986-08-04T17:30:25Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:46–01:34 on the 3rd, 00:46–01:34 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11746 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Sunday 3 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": "1986-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-03", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Sunday 3 August. Caturdaśī runs from 19:59 on Sun 3 Aug to 21:30 on Mon 4 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-08-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35430, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-08-07T23:31:05+04:00", "utc": "1986-08-07T19:31:05Z", "ms": 523827065056.5028 }, "end": { "local": "1986-08-08T23:23:51+04:00", "utc": "1986-08-08T19:23:51Z", "ms": 523913030936.75507 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-07T23:31:05+04:00", "utc": "1986-08-07T19:31:05Z", "ms": 523827065056.5028 }, "end": { "local": "1986-08-08T23:23:51+04:00", "utc": "1986-08-08T19:23:51Z", "ms": 523913030936.75507 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-07", "window": { "start": { "local": "1986-08-07T12:45:28+04:00", "utc": "1986-08-07T08:45:28Z", "ms": 523788328424.3981 }, "end": { "local": "1986-08-07T13:33:28+04:00", "utc": "1986-08-07T09:33:28Z", "ms": 523791208424.3981 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-08", "window": { "start": { "local": "1986-08-08T12:45:21+04:00", "utc": "1986-08-08T08:45:21Z", "ms": 523874720931.1454 }, "end": { "local": "1986-08-08T13:33:21+04:00", "utc": "1986-08-08T09:33:21Z", "ms": 523877600931.1454 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 23:31 on Thu 7 Aug to 23:24 on Fri 8 Aug.", "fact": "1986-08-07T19:31:05Z → 1986-08-08T19:23:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 7th, 12:45–13:33 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35430 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Erbil, 1986: Friday 8 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": "1986-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-08", "confidence": "determinate" } ], "quote": "In Erbil, Madhusravā Tṛtīyā (Hariyali Teej) 1986 falls on Friday 8 August. Tṛtīyā runs from 23:31 on Thu 7 Aug to 23:24 on Fri 8 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-08-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33691, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-08-08T23:23:51+04:00", "utc": "1986-08-08T19:23:51Z", "ms": 523913030936.75507 }, "end": { "local": "1986-08-09T22:54:44+04:00", "utc": "1986-08-09T18:54:44Z", "ms": 523997683715.70526 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-08T23:23:51+04:00", "utc": "1986-08-08T19:23:51Z", "ms": 523913030936.75507 }, "end": { "local": "1986-08-09T22:54:44+04:00", "utc": "1986-08-09T18:54:44Z", "ms": 523997683715.70526 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-08", "window": { "start": { "local": "1986-08-08T12:45:21+04:00", "utc": "1986-08-08T08:45:21Z", "ms": 523874720931.1454 }, "end": { "local": "1986-08-08T13:33:21+04:00", "utc": "1986-08-08T09:33:21Z", "ms": 523877600931.1454 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-09", "window": { "start": { "local": "1986-08-09T12:45:13+04:00", "utc": "1986-08-09T08:45:13Z", "ms": 523961112848.4911 }, "end": { "local": "1986-08-09T13:33:13+04:00", "utc": "1986-08-09T09:33:13Z", "ms": 523963992848.4911 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:24 on Fri 8 Aug to 22:55 on Sat 9 Aug.", "fact": "1986-08-08T19:23:51Z → 1986-08-09T18:54:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 8th, 12:45–13:33 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33691 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Saturday 9 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": "1986-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-09", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Saturday 9 August. Caturthī runs from 23:24 on Fri 8 Aug to 22:55 on Sat 9 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30656, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-08-09T22:54:44+04:00", "utc": "1986-08-09T18:54:44Z", "ms": 523997683715.70526 }, "end": { "local": "1986-08-10T22:04:00+04:00", "utc": "1986-08-10T18:04:00Z", "ms": 524081039690.63763 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-09T22:54:44+04:00", "utc": "1986-08-09T18:54:44Z", "ms": 523997683715.70526 }, "end": { "local": "1986-08-10T22:04:00+04:00", "utc": "1986-08-10T18:04:00Z", "ms": 524081039690.63763 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-09", "window": { "start": { "local": "1986-08-09T12:45:13+04:00", "utc": "1986-08-09T08:45:13Z", "ms": 523961112848.4911 }, "end": { "local": "1986-08-09T13:33:13+04:00", "utc": "1986-08-09T09:33:13Z", "ms": 523963992848.4911 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-10", "window": { "start": { "local": "1986-08-10T12:45:04+04:00", "utc": "1986-08-10T08:45:04Z", "ms": 524047504178.8307 }, "end": { "local": "1986-08-10T13:33:04+04:00", "utc": "1986-08-10T09:33:04Z", "ms": 524050384178.8307 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 22:55 on Sat 9 Aug to 22:04 on Sun 10 Aug.", "fact": "1986-08-09T18:54:44Z → 1986-08-10T18:04:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 9th, 12:45–13:33 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30656 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Erbil, 1986: Sunday 10 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": "1986-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-10", "confidence": "determinate" } ], "quote": "In Erbil, Nāga Pañcamī 1986 falls on Sunday 10 August. Pañcamī runs from 22:55 on Sat 9 Aug to 22:04 on Sun 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-08-16", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12115, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-08-15T12:30:47+04:00", "utc": "1986-08-15T08:30:47Z", "ms": 524478646764.76105 }, "end": { "local": "1986-08-16T09:44:34+04:00", "utc": "1986-08-16T05:44:34Z", "ms": 524555073625.53204 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-15T12:30:47+04:00", "utc": "1986-08-15T08:30:47Z", "ms": 524478646764.76105 }, "end": { "local": "1986-08-16T09:44:34+04:00", "utc": "1986-08-16T05:44:34Z", "ms": 524555073625.53204 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-08-15", "window": { "start": { "local": "1986-08-15T06:21:51+04:00", "utc": "1986-08-15T02:21:51Z", "ms": 524456510665.9005 }, "end": { "local": "1986-08-15T06:21:51+04:00", "utc": "1986-08-15T02:21:51Z", "ms": 524456510665.9005 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-08-16", "window": { "start": { "local": "1986-08-16T06:22:39+04:00", "utc": "1986-08-16T02:22:39Z", "ms": 524542958690.3666 }, "end": { "local": "1986-08-16T06:22:39+04:00", "utc": "1986-08-16T02:22:39Z", "ms": 524542958690.3666 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:31 on Fri 15 Aug to 09:45 on Sat 16 Aug.", "fact": "1986-08-15T08:30:47Z → 1986-08-16T05:44:34Z" }, { "step": "kaala", "text": "Sunrise is at 06:22 on the 15th and 06:23 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12115 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Erbil, 1986: Saturday 16 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": "1986-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-16", "confidence": "determinate" } ], "quote": "In Erbil, Putradā Ekādaśī 1986 falls on Saturday 16 August. Ekādaśī runs from 12:31 on Fri 15 Aug to 09:45 on Sat 16 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-08-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10767, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-08-16T09:44:34+04:00", "utc": "1986-08-16T05:44:34Z", "ms": 524555073625.53204 }, "end": { "local": "1986-08-17T06:51:52+04:00", "utc": "1986-08-17T02:51:52Z", "ms": 524631112089.86005 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-16T09:44:34+04:00", "utc": "1986-08-16T05:44:34Z", "ms": 524555073625.53204 }, "end": { "local": "1986-08-17T06:51:52+04:00", "utc": "1986-08-17T02:51:52Z", "ms": 524631112089.86005 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-16", "window": { "start": { "local": "1986-08-16T12:44:00+04:00", "utc": "1986-08-16T08:44:00Z", "ms": 524565840137.82574 }, "end": { "local": "1986-08-16T13:32:00+04:00", "utc": "1986-08-16T09:32:00Z", "ms": 524568720137.82574 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-08-17", "window": { "start": { "local": "1986-08-17T12:43:48+04:00", "utc": "1986-08-17T08:43:48Z", "ms": 524652227542.90173 }, "end": { "local": "1986-08-17T13:31:48+04:00", "utc": "1986-08-17T09:31:48Z", "ms": 524655107542.90173 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 09:45 on Sat 16 Aug to 06:52 on Sun 17 Aug.", "fact": "1986-08-16T05:44:34Z → 1986-08-17T02:51:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:44–13:32 on the 16th, 12:44–13:32 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10767 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Erbil, 1986: Saturday 16 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": "1986-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-16", "confidence": "determinate" } ], "quote": "In Erbil, Dāmodara Dvādaśī 1986 falls on Saturday 16 August. Dvādaśī runs from 09:45 on Sat 16 Aug to 06:52 on Sun 17 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-08-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24226, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-08-17T06:51:52+04:00", "utc": "1986-08-17T02:51:52Z", "ms": 524631112089.86005 }, "end": { "local": "1986-08-18T04:00:12+04:00", "utc": "1986-08-18T00:00:12Z", "ms": 524707211504.8023 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-17T06:51:52+04:00", "utc": "1986-08-17T02:51:52Z", "ms": 524631112089.86005 }, "end": { "local": "1986-08-18T04:00:12+04:00", "utc": "1986-08-18T00:00:12Z", "ms": 524707211504.8023 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-08-16", "window": { "start": { "local": "1986-08-16T19:53:22+04:00", "utc": "1986-08-16T15:53:22Z", "ms": 524591601585.2849 }, "end": { "local": "1986-08-16T21:17:22+04:00", "utc": "1986-08-16T17:17:22Z", "ms": 524596642259.9925 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "1986-08-17", "window": { "start": { "local": "1986-08-17T19:52:08+04:00", "utc": "1986-08-17T15:52:08Z", "ms": 524677928440.2116 }, "end": { "local": "1986-08-17T21:16:25+04:00", "utc": "1986-08-17T17:16:25Z", "ms": 524682985251.88196 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:52 on Sun 17 Aug to 04:00 on Mon 18 Aug.", "fact": "1986-08-17T02:51:52Z → 1986-08-18T00:00:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:53–21:17 on the 16th, 19:52–21:16 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 84 minutes on the 16th and 84 of 84 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24226 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Sunday 17 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": "1986-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-17", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Sunday 17 August. Trayodaśī runs from 06:52 on Sun 17 Aug to 04:00 on Mon 18 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-08-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20291, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-08-19T01:17:59+04:00", "utc": "1986-08-18T21:17:59Z", "ms": 524783878940.7582 }, "end": { "local": "1986-08-19T22:54:11+04:00", "utc": "1986-08-19T18:54:11Z", "ms": 524861651031.4847 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1986-08-19T12:03:13+04:00", "utc": "1986-08-19T08:03:13Z", "ms": 524822593109.20715 }, "end": { "local": "1986-08-19T22:54:11+04:00", "utc": "1986-08-19T18:54:11Z", "ms": 524861651031.4847 } }, "kaala": "day", "days": [ { "local_date": "1986-08-18", "window": { "start": { "local": "1986-08-18T06:24:15+04:00", "utc": "1986-08-18T02:24:15Z", "ms": 524715854527.7391 }, "end": { "local": "1986-08-19T06:25:02+04:00", "utc": "1986-08-19T02:25:02Z", "ms": 524802302335.283 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1986-08-19", "window": { "start": { "local": "1986-08-19T06:25:02+04:00", "utc": "1986-08-19T02:25:02Z", "ms": 524802302335.283 }, "end": { "local": "1986-08-20T06:25:50+04:00", "utc": "1986-08-20T02:25:50Z", "ms": 524888750068.57635 } }, "covered_min": 651, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:18 on Tue 19 Aug to 22:54 on Tue 19 Aug. Its second half begins at 12:03 on Tue 19 Aug.", "fact": "1986-08-18T21:17:59Z → 1986-08-19T18:54:11Z · second half from 1986-08-19T08:03:13Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:24 on the 18th, and from 06:25 on the 19th.", "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 18th and 651 of 1441 on the 19th.", "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 20291 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Erbil, 1986: Tuesday 19 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": "1986-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-19", "confidence": "determinate" } ], "quote": "In Erbil, Rakṣā Bandhana (Rakhi) 1986 falls on Tuesday 19 August. The second half of Pūrṇimā runs from 12:03 on Tue 19 Aug to 22:54 on Tue 19 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33770, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-08-19T01:17:59+04:00", "utc": "1986-08-18T21:17:59Z", "ms": 524783878940.7582 }, "end": { "local": "1986-08-19T22:54:11+04:00", "utc": "1986-08-19T18:54:11Z", "ms": 524861651031.4847 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1986-08-19T01:17:59+04:00", "utc": "1986-08-18T21:17:59Z", "ms": 524783878940.7582 }, "end": { "local": "1986-08-19T22:54:11+04:00", "utc": "1986-08-19T18:54:11Z", "ms": 524861651031.4847 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-18", "window": { "start": { "local": "1986-08-18T12:43:34+04:00", "utc": "1986-08-18T08:43:34Z", "ms": 524738614431.5049 }, "end": { "local": "1986-08-18T13:31:34+04:00", "utc": "1986-08-18T09:31:34Z", "ms": 524741494431.5049 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-19", "window": { "start": { "local": "1986-08-19T12:43:21+04:00", "utc": "1986-08-19T08:43:21Z", "ms": 524825000818.656 }, "end": { "local": "1986-08-19T13:31:21+04:00", "utc": "1986-08-19T09:31:21Z", "ms": 524827880818.656 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:18 on Tue 19 Aug to 22:54 on Tue 19 Aug.", "fact": "1986-08-18T21:17:59Z → 1986-08-19T18:54:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:44–13:32 on the 18th, 12:43–13:31 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33770 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Erbil, 1986: Tuesday 19 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": "1986-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-19", "confidence": "determinate" } ], "quote": "In Erbil, Ṛṣi Tarpaṇa 1986 falls on Tuesday 19 August. Pūrṇimā runs from 01:18 on Tue 19 Aug to 22:54 on Tue 19 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-20", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1448, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1986-08-20T20:57:39+04:00", "utc": "1986-08-20T16:57:39Z", "ms": 524941059150.6181 }, "end": { "local": "1986-08-21T19:36:26+04:00", "utc": "1986-08-21T15:36:26Z", "ms": 525022586127.24066 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-20T20:57:39+04:00", "utc": "1986-08-20T16:57:39Z", "ms": 524941059150.6181 }, "end": { "local": "1986-08-21T19:36:26+04:00", "utc": "1986-08-21T15:36:26Z", "ms": 525022586127.24066 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-08-20", "window": { "start": { "local": "1986-08-20T20:33:32+04:00", "utc": "1986-08-20T16:33:32Z", "ms": 524939611513.38025 }, "end": { "local": "1986-08-20T20:33:32+04:00", "utc": "1986-08-20T16:33:32Z", "ms": 524939611513.38025 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-08-21", "window": { "start": { "local": "1986-08-21T21:00:33+04:00", "utc": "1986-08-21T17:00:33Z", "ms": 525027633236.9598 }, "end": { "local": "1986-08-21T21:00:33+04:00", "utc": "1986-08-21T17:00:33Z", "ms": 525027633236.9598 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 20:58 on Wed 20 Aug to 19:36 on Thu 21 Aug.", "fact": "1986-08-20T16:57:39Z → 1986-08-21T15:36:26Z" }, { "step": "kaala", "text": "Moonrise is at 20:34 on the 20th and 21:01 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1448 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Erbil, 1986: Wednesday 20 August.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "1986-08-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-20", "confidence": "boundary" } ], "quote": "In Erbil, Aśūnya Śayana Vrata 1986 falls on Wednesday 20 August. Dvitīyā runs from 20:58 on Wed 20 Aug to 19:36 on Thu 21 Aug, and is current at moonrise on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19576, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-08-21T19:36:26+04:00", "utc": "1986-08-21T15:36:26Z", "ms": 525022586127.24066 }, "end": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-21T19:36:26+04:00", "utc": "1986-08-21T15:36:26Z", "ms": 525022586127.24066 }, "end": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-21", "window": { "start": { "local": "1986-08-21T12:42:52+04:00", "utc": "1986-08-21T08:42:52Z", "ms": 524997772152.2739 }, "end": { "local": "1986-08-21T13:30:52+04:00", "utc": "1986-08-21T09:30:52Z", "ms": 525000652152.2739 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-22", "window": { "start": { "local": "1986-08-22T12:42:37+04:00", "utc": "1986-08-22T08:42:37Z", "ms": 525084157131.37305 }, "end": { "local": "1986-08-22T13:30:37+04:00", "utc": "1986-08-22T09:30:37Z", "ms": 525087037131.37305 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 19:36 on Thu 21 Aug to 18:57 on Fri 22 Aug.", "fact": "1986-08-21T15:36:26Z → 1986-08-22T14:56:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:43–13:31 on the 21st, 12:43–13:31 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19576 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Erbil, 1986: Friday 22 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": "1986-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-22", "confidence": "determinate" } ], "quote": "In Erbil, Kajjalī Tṛtīyā (Kajari Teej) 1986 falls on Friday 22 August. Tṛtīyā runs from 19:36 on Thu 21 Aug to 18:57 on Fri 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2512, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 }, "end": { "local": "1986-08-23T19:02:39+04:00", "utc": "1986-08-23T15:02:39Z", "ms": 525193358844.06995 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 }, "end": { "local": "1986-08-23T19:02:39+04:00", "utc": "1986-08-23T15:02:39Z", "ms": 525193358844.06995 } }, "kaala": "sayahna", "days": [ { "local_date": "1986-08-22", "window": { "start": { "local": "1986-08-22T17:06:08+04:00", "utc": "1986-08-22T13:06:08Z", "ms": 525099968218.5475 }, "end": { "local": "1986-08-22T19:45:49+04:00", "utc": "1986-08-22T15:45:49Z", "ms": 525109548943.33044 } }, "covered_min": 49, "window_min": 160, "qualifies": true }, { "local_date": "1986-08-23", "window": { "start": { "local": "1986-08-23T17:05:15+04:00", "utc": "1986-08-23T13:05:15Z", "ms": 525186314973.0797 }, "end": { "local": "1986-08-23T19:44:31+04:00", "utc": "1986-08-23T15:44:31Z", "ms": 525195870506.00385 } }, "covered_min": 117, "window_min": 159, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:57 on Fri 22 Aug to 19:03 on Sat 23 Aug.", "fact": "1986-08-22T14:56:53Z → 1986-08-23T15:02:39Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:06–19:46 on the 22nd, 17:05–19:45 on the 23rd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 49 of 160 minutes on the 22nd and 117 of 159 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both late afternoons qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 2512 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Erbil, 1986: Friday 22 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": "1986-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-22", "confidence": "determinate" } ], "quote": "In Erbil, Bahulā Caturthī 1986 falls on Friday 22 August. Caturthī runs from 18:57 on Fri 22 Aug to 19:03 on Sat 23 Aug and covers 49 of 160 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 117 minutes; by the rule the first late afternoon is taken.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-08-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8919, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 }, "end": { "local": "1986-08-23T19:02:39+04:00", "utc": "1986-08-23T15:02:39Z", "ms": 525193358844.06995 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-22T18:56:53+04:00", "utc": "1986-08-22T14:56:53Z", "ms": 525106613164.1862 }, "end": { "local": "1986-08-23T19:02:39+04:00", "utc": "1986-08-23T15:02:39Z", "ms": 525193358844.06995 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-08-22", "window": { "start": { "local": "1986-08-22T21:25:33+04:00", "utc": "1986-08-22T17:25:33Z", "ms": 525115532536.71185 }, "end": { "local": "1986-08-22T21:25:33+04:00", "utc": "1986-08-22T17:25:33Z", "ms": 525115532536.71185 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-08-23", "window": { "start": { "local": "1986-08-23T21:49:59+04:00", "utc": "1986-08-23T17:49:59Z", "ms": 525203399082.6879 }, "end": { "local": "1986-08-23T21:49:59+04:00", "utc": "1986-08-23T17:49:59Z", "ms": 525203399082.6879 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:57 on Fri 22 Aug to 19:03 on Sat 23 Aug.", "fact": "1986-08-22T14:56:53Z → 1986-08-23T15:02:39Z" }, { "step": "kaala", "text": "Moonrise is at 21:26 on the 22nd and 21:50 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 22nd and is not on the 23rd.", "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 8919 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Friday 22 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": "1986-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-22", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Friday 22 August. Caturthī runs from 18:57 on Fri 22 Aug to 19:03 on Sat 23 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-08-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23013, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-08-24T19:53:39+04:00", "utc": "1986-08-24T15:53:39Z", "ms": 525282818605.7878 }, "end": { "local": "1986-08-25T21:25:21+04:00", "utc": "1986-08-25T17:25:21Z", "ms": 525374721479.4915 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-24T19:53:39+04:00", "utc": "1986-08-24T15:53:39Z", "ms": 525282818605.7878 }, "end": { "local": "1986-08-25T21:25:21+04:00", "utc": "1986-08-25T17:25:21Z", "ms": 525374721479.4915 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-24", "window": { "start": { "local": "1986-08-24T12:42:06+04:00", "utc": "1986-08-24T08:42:06Z", "ms": 525256925795.1692 }, "end": { "local": "1986-08-24T13:30:06+04:00", "utc": "1986-08-24T09:30:06Z", "ms": 525259805795.1692 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-25", "window": { "start": { "local": "1986-08-25T12:41:50+04:00", "utc": "1986-08-25T08:41:50Z", "ms": 525343309511.38544 }, "end": { "local": "1986-08-25T13:29:50+04:00", "utc": "1986-08-25T09:29:50Z", "ms": 525346189511.38544 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 19:54 on Sun 24 Aug to 21:25 on Mon 25 Aug.", "fact": "1986-08-24T15:53:39Z → 1986-08-25T17:25:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 24th, 12:42–13:30 on the 25th.", "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 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23013 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Erbil, 1986: Monday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-25", "confidence": "determinate" } ], "quote": "In Erbil, Hala Ṣaṣṭhī 1986 falls on Monday 25 August. Ṣaṣṭhī runs from 19:54 on Sun 24 Aug to 21:25 on Mon 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28532, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-08-25T21:25:21+04:00", "utc": "1986-08-25T17:25:21Z", "ms": 525374721479.4915 }, "end": { "local": "1986-08-26T23:28:46+04:00", "utc": "1986-08-26T19:28:46Z", "ms": 525468526333.04944 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-25T21:25:21+04:00", "utc": "1986-08-25T17:25:21Z", "ms": 525374721479.4915 }, "end": { "local": "1986-08-26T23:28:46+04:00", "utc": "1986-08-26T19:28:46Z", "ms": 525468526333.04944 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-08-25", "window": { "start": { "local": "1986-08-25T12:41:50+04:00", "utc": "1986-08-25T08:41:50Z", "ms": 525343309511.38544 }, "end": { "local": "1986-08-25T13:29:50+04:00", "utc": "1986-08-25T09:29:50Z", "ms": 525346189511.38544 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-08-26", "window": { "start": { "local": "1986-08-26T12:41:33+04:00", "utc": "1986-08-26T08:41:33Z", "ms": 525429692837.61365 }, "end": { "local": "1986-08-26T13:29:33+04:00", "utc": "1986-08-26T09:29:33Z", "ms": 525432572837.61365 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 21:25 on Mon 25 Aug to 23:29 on Tue 26 Aug.", "fact": "1986-08-25T17:25:21Z → 1986-08-26T19:28:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 25th, 12:42–13:30 on the 26th.", "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 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28532 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Erbil, 1986: Tuesday 26 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-26", "confidence": "determinate" } ], "quote": "In Erbil, Śītalā Saptamī 1986 falls on Tuesday 26 August. Saptamī runs from 21:25 on Mon 25 Aug to 23:29 on Tue 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1296, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-08-26T23:28:46+04:00", "utc": "1986-08-26T19:28:46Z", "ms": 525468526333.04944 }, "end": { "local": "1986-08-28T01:51:15+04:00", "utc": "1986-08-27T21:51:15Z", "ms": 525563474980.72546 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-26T23:28:46+04:00", "utc": "1986-08-26T19:28:46Z", "ms": 525468526333.04944 }, "end": { "local": "1986-08-28T01:51:15+04:00", "utc": "1986-08-27T21:51:15Z", "ms": 525563474980.72546 } }, "kaala": "nishita", "days": [ { "local_date": "1986-08-26", "window": { "start": { "local": "1986-08-27T00:41:56+04:00", "utc": "1986-08-26T20:41:56Z", "ms": 525472916470.31537 }, "end": { "local": "1986-08-27T01:29:56+04:00", "utc": "1986-08-26T21:29:56Z", "ms": 525475796470.31537 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-08-27", "window": { "start": { "local": "1986-08-28T00:41:39+04:00", "utc": "1986-08-27T20:41:39Z", "ms": 525559299391.006 }, "end": { "local": "1986-08-28T01:29:39+04:00", "utc": "1986-08-27T21:29:39Z", "ms": 525562179391.006 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:29 on Tue 26 Aug to 01:51 on Thu 28 Aug.", "fact": "1986-08-26T19:28:46Z → 1986-08-27T21:51:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:42–01:30 on the 26th, 00:42–01:30 on the 27th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both nights qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1296 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Erbil, 1986: Wednesday 27 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-27", "confidence": "determinate" } ], "quote": "In Erbil, Janmāṣṭamī 1986 falls on Wednesday 27 August. Aṣṭamī runs from 23:29 on Tue 26 Aug to 01:51 on Thu 28 Aug and covers all of niśītha that night. It also reaches the previous night for 48 minutes; by the rule the second night is taken.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-08-31", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-08-31", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 139, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-08-30T06:36:03+04:00", "utc": "1986-08-30T02:36:03Z", "ms": 525753362802.77814 }, "end": { "local": "1986-08-31T08:32:51+04:00", "utc": "1986-08-31T04:32:51Z", "ms": 525846771244.56995 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-08-30T06:36:03+04:00", "utc": "1986-08-30T02:36:03Z", "ms": 525753362802.77814 }, "end": { "local": "1986-08-31T08:32:51+04:00", "utc": "1986-08-31T04:32:51Z", "ms": 525846771244.56995 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-08-30", "window": { "start": { "local": "1986-08-30T06:33:44+04:00", "utc": "1986-08-30T02:33:44Z", "ms": 525753223714.9213 }, "end": { "local": "1986-08-30T06:33:44+04:00", "utc": "1986-08-30T02:33:44Z", "ms": 525753223714.9213 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-08-31", "window": { "start": { "local": "1986-08-31T06:34:31+04:00", "utc": "1986-08-31T02:34:31Z", "ms": 525839670742.6398 }, "end": { "local": "1986-08-31T06:34:31+04:00", "utc": "1986-08-31T02:34:31Z", "ms": 525839670742.6398 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:36 on Sat 30 Aug to 08:33 on Sun 31 Aug.", "fact": "1986-08-30T02:36:03Z → 1986-08-31T04:32:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 30th and 06:35 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 139 s < 300 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Erbil, 1986: Sunday 31 August.", "fact": "confidence: boundary (margin)" } ], "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": "1986-08-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-08-31", "confidence": "boundary" } ], "quote": "In Erbil, Ajā Ekādaśī 1986 falls on Sunday 31 August. Ekādaśī runs from 06:36 on Sat 30 Aug to 08:33 on Sun 31 Aug and is current at sunrise that day. It is 2 min 19 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-08-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-09-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30860, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-09-01T10:00:57+04:00", "utc": "1986-09-01T06:00:57Z", "ms": 525938456983.22253 }, "end": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-01T10:00:57+04:00", "utc": "1986-09-01T06:00:57Z", "ms": 525938456983.22253 }, "end": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-09-01", "window": { "start": { "local": "1986-09-01T19:32:13+04:00", "utc": "1986-09-01T15:32:13Z", "ms": 525972733160.2459 }, "end": { "local": "1986-09-01T21:00:44+04:00", "utc": "1986-09-01T17:00:44Z", "ms": 525978044023.0341 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1986-09-02", "window": { "start": { "local": "1986-09-02T19:30:48+04:00", "utc": "1986-09-02T15:30:48Z", "ms": 526059048263.2511 }, "end": { "local": "1986-09-02T20:59:37+04:00", "utc": "1986-09-02T16:59:37Z", "ms": 526064376694.10205 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:01 on Mon 1 Sep to 10:56 on Tue 2 Sep.", "fact": "1986-09-01T06:00:57Z → 1986-09-02T06:56:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:32–21:01 on the 1st, 19:31–21:00 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 89 of 89 minutes on the 1st and 0 of 89 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 30860 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Monday 1 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": "1986-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-01", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Monday 1 September. Trayodaśī runs from 10:01 on Mon 1 Sep to 10:56 on Tue 2 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-09-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29427, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 }, "end": { "local": "1986-09-03T11:18:56+04:00", "utc": "1986-09-03T07:18:56Z", "ms": 526115936300.23645 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 }, "end": { "local": "1986-09-03T11:18:56+04:00", "utc": "1986-09-03T07:18:56Z", "ms": 526115936300.23645 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-09-02", "window": { "start": { "local": "1986-09-02T19:30:48+04:00", "utc": "1986-09-02T15:30:48Z", "ms": 526059048263.2511 }, "end": { "local": "1986-09-02T20:59:37+04:00", "utc": "1986-09-02T16:59:37Z", "ms": 526064376694.10205 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "1986-09-03", "window": { "start": { "local": "1986-09-03T19:29:23+04:00", "utc": "1986-09-03T15:29:23Z", "ms": 526145362872.6503 }, "end": { "local": "1986-09-03T20:58:29+04:00", "utc": "1986-09-03T16:58:29Z", "ms": 526150708930.4338 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:56 on Tue 2 Sep to 11:19 on Wed 3 Sep.", "fact": "1986-09-02T06:56:28Z → 1986-09-03T07:18:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:31–21:00 on the 2nd, 19:29–20:58 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 89 of 89 minutes on the 2nd and 0 of 89 on the 3rd.", "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 29427 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Erbil, 1986: Tuesday 2 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": "1986-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-02", "confidence": "determinate" } ], "quote": "In Erbil, Aghora Caturdaśī 1986 falls on Tuesday 2 September. Caturdaśī runs from 10:56 on Tue 2 Sep to 11:19 on Wed 3 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/shivaratri?on=1986-09-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34099, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 }, "end": { "local": "1986-09-03T11:18:56+04:00", "utc": "1986-09-03T07:18:56Z", "ms": 526115936300.23645 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-02T10:56:28+04:00", "utc": "1986-09-02T06:56:28Z", "ms": 526028187861.5255 }, "end": { "local": "1986-09-03T11:18:56+04:00", "utc": "1986-09-03T07:18:56Z", "ms": 526115936300.23645 } }, "kaala": "nishita", "days": [ { "local_date": "1986-09-01", "window": { "start": { "local": "1986-09-02T00:40:09+04:00", "utc": "1986-09-01T20:40:09Z", "ms": 525991208895.7018 }, "end": { "local": "1986-09-02T01:28:09+04:00", "utc": "1986-09-01T21:28:09Z", "ms": 525994088895.7018 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-09-02", "window": { "start": { "local": "1986-09-03T00:39:50+04:00", "utc": "1986-09-02T20:39:50Z", "ms": 526077589878.94214 }, "end": { "local": "1986-09-03T01:27:50+04:00", "utc": "1986-09-02T21:27:50Z", "ms": 526080469878.94214 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:56 on Tue 2 Sep to 11:19 on Wed 3 Sep.", "fact": "1986-09-02T06:56:28Z → 1986-09-03T07:18:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:40–01:28 on the 1st, 00:40–01:28 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34099 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Tuesday 2 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": "1986-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-02", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Tuesday 2 September. Caturdaśī runs from 10:56 on Tue 2 Sep to 11:19 on Wed 3 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-09-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5305, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-09-04T11:10:23+04:00", "utc": "1986-09-04T07:10:23Z", "ms": 526201822943.1244 }, "end": { "local": "1986-09-05T10:34:16+04:00", "utc": "1986-09-05T06:34:16Z", "ms": 526286055885.1289 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-04T11:10:23+04:00", "utc": "1986-09-04T07:10:23Z", "ms": 526201822943.1244 }, "end": { "local": "1986-09-05T10:34:16+04:00", "utc": "1986-09-05T06:34:16Z", "ms": 526286055885.1289 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-04", "window": { "start": { "local": "1986-09-04T12:38:48+04:00", "utc": "1986-09-04T08:38:48Z", "ms": 526207127660.3965 }, "end": { "local": "1986-09-04T13:26:48+04:00", "utc": "1986-09-04T09:26:48Z", "ms": 526210007660.3965 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-05", "window": { "start": { "local": "1986-09-05T12:38:28+04:00", "utc": "1986-09-05T08:38:28Z", "ms": 526293507891.3331 }, "end": { "local": "1986-09-05T13:26:28+04:00", "utc": "1986-09-05T09:26:28Z", "ms": 526296387891.3331 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 11:10 on Thu 4 Sep to 10:34 on Fri 5 Sep.", "fact": "1986-09-04T07:10:23Z → 1986-09-05T06:34:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 4th, 12:38–13:26 on the 5th.", "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 4th and 0 of 48 on the 5th.", "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 5305 s" }, { "step": "ruling", "text": "Rudra Vrata, Erbil, 1986: Thursday 4 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": "1986-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-04", "confidence": "determinate" } ], "quote": "In Erbil, Rudra Vrata 1986 falls on Thursday 4 September. Pratipadā runs from 11:10 on Thu 4 Sep to 10:34 on Fri 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11010, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1986-09-06T09:34:38+04:00", "utc": "1986-09-06T05:34:38Z", "ms": 526368878111.68463 }, "end": { "local": "1986-09-07T08:15:29+04:00", "utc": "1986-09-07T04:15:29Z", "ms": 526450529012.3321 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-06T09:34:38+04:00", "utc": "1986-09-06T05:34:38Z", "ms": 526368878111.68463 }, "end": { "local": "1986-09-07T08:15:29+04:00", "utc": "1986-09-07T04:15:29Z", "ms": 526450529012.3321 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-06", "window": { "start": { "local": "1986-09-06T12:38:08+04:00", "utc": "1986-09-06T08:38:08Z", "ms": 526379887890.44226 }, "end": { "local": "1986-09-06T13:26:08+04:00", "utc": "1986-09-06T09:26:08Z", "ms": 526382767890.44226 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-07", "window": { "start": { "local": "1986-09-07T12:37:48+04:00", "utc": "1986-09-07T08:37:48Z", "ms": 526466267672.04535 }, "end": { "local": "1986-09-07T13:25:48+04:00", "utc": "1986-09-07T09:25:48Z", "ms": 526469147672.04535 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:35 on Sat 6 Sep to 08:15 on Sun 7 Sep.", "fact": "1986-09-06T05:34:38Z → 1986-09-07T04:15:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:38–13:26 on the 6th, 12:38–13:26 on the 7th.", "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 6th and 0 of 48 on the 7th.", "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 11010 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Erbil, 1986: Saturday 6 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": "1986-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-06", "confidence": "determinate" } ], "quote": "In Erbil, Haritālikā Vrata (Hartalika Teej) 1986 falls on Saturday 6 September. Tṛtīyā runs from 09:35 on Sat 6 Sep to 08:15 on Sun 7 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15739, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-09-07T08:15:29+04:00", "utc": "1986-09-07T04:15:29Z", "ms": 526450529012.3321 }, "end": { "local": "1986-09-08T06:40:22+04:00", "utc": "1986-09-08T02:40:22Z", "ms": 526531221537.7265 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-07T08:15:29+04:00", "utc": "1986-09-07T04:15:29Z", "ms": 526450529012.3321 }, "end": { "local": "1986-09-08T06:40:22+04:00", "utc": "1986-09-08T02:40:22Z", "ms": 526531221537.7265 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-07", "window": { "start": { "local": "1986-09-07T12:37:48+04:00", "utc": "1986-09-07T08:37:48Z", "ms": 526466267672.04535 }, "end": { "local": "1986-09-07T13:25:48+04:00", "utc": "1986-09-07T09:25:48Z", "ms": 526469147672.04535 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-08", "window": { "start": { "local": "1986-09-08T12:37:27+04:00", "utc": "1986-09-08T08:37:27Z", "ms": 526552647251.0137 }, "end": { "local": "1986-09-08T13:25:27+04:00", "utc": "1986-09-08T09:25:27Z", "ms": 526555527251.0137 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:15 on Sun 7 Sep to 06:40 on Mon 8 Sep.", "fact": "1986-09-07T04:15:29Z → 1986-09-08T02:40:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:38–13:26 on the 7th, 12:37–13:25 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15739 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Erbil, 1986: Sunday 7 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": "1986-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-07", "confidence": "determinate" } ], "quote": "In Erbil, Gaṇeśa Caturthī 1986 falls on Sunday 7 September. Caturthī runs from 08:15 on Sun 7 Sep to 06:40 on Mon 8 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21426, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-09-08T06:40:22+04:00", "utc": "1986-09-08T02:40:22Z", "ms": 526531221537.7265 }, "end": { "local": "1986-09-09T04:52:14+04:00", "utc": "1986-09-09T00:52:14Z", "ms": 526611134276.05304 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-08T06:40:22+04:00", "utc": "1986-09-08T02:40:22Z", "ms": 526531221537.7265 }, "end": { "local": "1986-09-09T04:52:14+04:00", "utc": "1986-09-09T00:52:14Z", "ms": 526611134276.05304 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-08", "window": { "start": { "local": "1986-09-08T12:37:27+04:00", "utc": "1986-09-08T08:37:27Z", "ms": 526552647251.0137 }, "end": { "local": "1986-09-08T13:25:27+04:00", "utc": "1986-09-08T09:25:27Z", "ms": 526555527251.0137 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-09", "window": { "start": { "local": "1986-09-09T12:37:07+04:00", "utc": "1986-09-09T08:37:07Z", "ms": 526639026642.97095 }, "end": { "local": "1986-09-09T13:25:07+04:00", "utc": "1986-09-09T09:25:07Z", "ms": 526641906642.97095 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:40 on Mon 8 Sep to 04:52 on Tue 9 Sep.", "fact": "1986-09-08T02:40:22Z → 1986-09-09T00:52:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 8th, 12:37–13:25 on the 9th.", "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 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 21426 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Erbil, 1986: Monday 8 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": "1986-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-08", "confidence": "determinate" } ], "quote": "In Erbil, Ṛṣi Pañcamī 1986 falls on Monday 8 September. Pañcamī runs from 06:40 on Mon 8 Sep to 04:52 on Tue 9 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27892, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-09-09T04:52:14+04:00", "utc": "1986-09-09T00:52:14Z", "ms": 526611134276.05304 }, "end": { "local": "1986-09-10T02:53:36+04:00", "utc": "1986-09-09T22:53:36Z", "ms": 526690416327.55725 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-09T04:52:14+04:00", "utc": "1986-09-09T00:52:14Z", "ms": 526611134276.05304 }, "end": { "local": "1986-09-10T02:53:36+04:00", "utc": "1986-09-09T22:53:36Z", "ms": 526690416327.55725 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-09", "window": { "start": { "local": "1986-09-09T12:37:07+04:00", "utc": "1986-09-09T08:37:07Z", "ms": 526639026642.97095 }, "end": { "local": "1986-09-09T13:25:07+04:00", "utc": "1986-09-09T09:25:07Z", "ms": 526641906642.97095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-10", "window": { "start": { "local": "1986-09-10T12:36:46+04:00", "utc": "1986-09-10T08:36:46Z", "ms": 526725405864.4577 }, "end": { "local": "1986-09-10T13:24:46+04:00", "utc": "1986-09-10T09:24:46Z", "ms": 526728285864.4577 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 04:52 on Tue 9 Sep to 02:54 on Wed 10 Sep.", "fact": "1986-09-09T00:52:14Z → 1986-09-09T22:53:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 9th, 12:37–13:25 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27892 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Erbil, 1986: Tuesday 9 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": "1986-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-09", "confidence": "determinate" } ], "quote": "In Erbil, Sūrya Ṣaṣṭhī (Bhādrapada) 1986 falls on Tuesday 9 September. Ṣaṣṭhī runs from 04:52 on Tue 9 Sep to 02:54 on Wed 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34990, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-09-10T02:53:36+04:00", "utc": "1986-09-09T22:53:36Z", "ms": 526690416327.55725 }, "end": { "local": "1986-09-11T00:46:42+04:00", "utc": "1986-09-10T20:46:42Z", "ms": 526769201654.3151 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-10T02:53:36+04:00", "utc": "1986-09-09T22:53:36Z", "ms": 526690416327.55725 }, "end": { "local": "1986-09-11T00:46:42+04:00", "utc": "1986-09-10T20:46:42Z", "ms": 526769201654.3151 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-10", "window": { "start": { "local": "1986-09-10T12:36:46+04:00", "utc": "1986-09-10T08:36:46Z", "ms": 526725405864.4577 }, "end": { "local": "1986-09-10T13:24:46+04:00", "utc": "1986-09-10T09:24:46Z", "ms": 526728285864.4577 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-09-11", "window": { "start": { "local": "1986-09-11T12:36:25+04:00", "utc": "1986-09-11T08:36:25Z", "ms": 526811784933.04956 }, "end": { "local": "1986-09-11T13:24:25+04:00", "utc": "1986-09-11T09:24:25Z", "ms": 526814664933.04956 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:54 on Wed 10 Sep to 00:47 on Thu 11 Sep.", "fact": "1986-09-09T22:53:36Z → 1986-09-10T20:46:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 10th, 12:36–13:24 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34990 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Erbil, 1986: Wednesday 10 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": "1986-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-10", "confidence": "determinate" } ], "quote": "In Erbil, Muktābharaṇa Vrata 1986 falls on Wednesday 10 September. Saptamī runs from 02:54 on Wed 10 Sep to 00:47 on Thu 11 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32964, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-09-11T00:46:42+04:00", "utc": "1986-09-10T20:46:42Z", "ms": 526769201654.3151 }, "end": { "local": "1986-09-11T22:33:49+04:00", "utc": "1986-09-11T18:33:49Z", "ms": 526847628553.0733 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-11T00:46:42+04:00", "utc": "1986-09-10T20:46:42Z", "ms": 526769201654.3151 }, "end": { "local": "1986-09-11T22:33:49+04:00", "utc": "1986-09-11T18:33:49Z", "ms": 526847628553.0733 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-10", "window": { "start": { "local": "1986-09-10T12:36:46+04:00", "utc": "1986-09-10T08:36:46Z", "ms": 526725405864.4577 }, "end": { "local": "1986-09-10T13:24:46+04:00", "utc": "1986-09-10T09:24:46Z", "ms": 526728285864.4577 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-09-11", "window": { "start": { "local": "1986-09-11T12:36:25+04:00", "utc": "1986-09-11T08:36:25Z", "ms": 526811784933.04956 }, "end": { "local": "1986-09-11T13:24:25+04:00", "utc": "1986-09-11T09:24:25Z", "ms": 526814664933.04956 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 00:47 on Thu 11 Sep to 22:34 on Thu 11 Sep.", "fact": "1986-09-10T20:46:42Z → 1986-09-11T18:33:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:37–13:25 on the 10th, 12:36–13:24 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32964 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Erbil, 1986: Thursday 11 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": "1986-09-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-11", "confidence": "determinate" } ], "quote": "In Erbil, Rādhāṣṭamī 1986 falls on Thursday 11 September. Aṣṭamī runs from 00:47 on Thu 11 Sep to 22:34 on Thu 11 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-09-14", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32667, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-09-13T18:01:37+04:00", "utc": "1986-09-13T14:01:37Z", "ms": 527004096668.89246 }, "end": { "local": "1986-09-14T15:49:51+04:00", "utc": "1986-09-14T11:49:51Z", "ms": 527082591168.302 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-13T18:01:37+04:00", "utc": "1986-09-13T14:01:37Z", "ms": 527004096668.89246 }, "end": { "local": "1986-09-14T15:49:51+04:00", "utc": "1986-09-14T11:49:51Z", "ms": 527082591168.302 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-09-13", "window": { "start": { "local": "1986-09-13T06:44:38+04:00", "utc": "1986-09-13T02:44:38Z", "ms": 526963477734.11066 }, "end": { "local": "1986-09-13T06:44:38+04:00", "utc": "1986-09-13T02:44:38Z", "ms": 526963477734.11066 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-09-14", "window": { "start": { "local": "1986-09-14T06:45:24+04:00", "utc": "1986-09-14T02:45:24Z", "ms": 527049924232.0692 }, "end": { "local": "1986-09-14T06:45:24+04:00", "utc": "1986-09-14T02:45:24Z", "ms": 527049924232.0692 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:02 on Sat 13 Sep to 15:50 on Sun 14 Sep.", "fact": "1986-09-13T14:01:37Z → 1986-09-14T11:49:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:45 on the 13th and 06:45 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 32667 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Erbil, 1986: Sunday 14 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": "1986-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-14", "confidence": "determinate" } ], "quote": "In Erbil, Parivartanī Ekādaśī 1986 falls on Sunday 14 September. Ekādaśī runs from 18:02 on Sat 13 Sep to 15:50 on Sun 14 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-09-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1463, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-09-14T15:49:51+04:00", "utc": "1986-09-14T11:49:51Z", "ms": 527082591168.302 }, "end": { "local": "1986-09-15T13:47:23+04:00", "utc": "1986-09-15T09:47:23Z", "ms": 527161642678.5187 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-14T15:49:51+04:00", "utc": "1986-09-14T11:49:51Z", "ms": 527082591168.302 }, "end": { "local": "1986-09-15T13:47:23+04:00", "utc": "1986-09-15T09:47:23Z", "ms": 527161642678.5187 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-09-14", "window": { "start": { "local": "1986-09-14T12:35:21+04:00", "utc": "1986-09-14T08:35:21Z", "ms": 527070921413.8282 }, "end": { "local": "1986-09-14T13:23:21+04:00", "utc": "1986-09-14T09:23:21Z", "ms": 527073801413.8282 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-09-15", "window": { "start": { "local": "1986-09-15T12:35:00+04:00", "utc": "1986-09-15T08:35:00Z", "ms": 527157300068.9464 }, "end": { "local": "1986-09-15T13:23:00+04:00", "utc": "1986-09-15T09:23:00Z", "ms": 527160180068.9464 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 15:50 on Sun 14 Sep to 13:47 on Mon 15 Sep.", "fact": "1986-09-14T11:49:51Z → 1986-09-15T09:47:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:35–13:23 on the 14th, 12:35–13:23 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1463 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Erbil, 1986: Monday 15 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": "1986-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-15", "confidence": "determinate" } ], "quote": "In Erbil, Vāmana Jayantī 1986 falls on Monday 15 September. Dvādaśī runs from 15:50 on Sun 14 Sep to 13:47 on Mon 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-09-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19467, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-09-15T13:47:23+04:00", "utc": "1986-09-15T09:47:23Z", "ms": 527161642678.5187 }, "end": { "local": "1986-09-16T11:59:51+04:00", "utc": "1986-09-16T07:59:51Z", "ms": 527241590986.8154 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-15T13:47:23+04:00", "utc": "1986-09-15T09:47:23Z", "ms": 527161642678.5187 }, "end": { "local": "1986-09-16T11:59:51+04:00", "utc": "1986-09-16T07:59:51Z", "ms": 527241590986.8154 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-09-15", "window": { "start": { "local": "1986-09-15T19:11:49+04:00", "utc": "1986-09-15T15:11:49Z", "ms": 527181109392.9337 }, "end": { "local": "1986-09-15T20:44:30+04:00", "utc": "1986-09-15T16:44:30Z", "ms": 527186670445.4853 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1986-09-16", "window": { "start": { "local": "1986-09-16T19:10:20+04:00", "utc": "1986-09-16T15:10:20Z", "ms": 527267420062.3829 }, "end": { "local": "1986-09-16T20:43:19+04:00", "utc": "1986-09-16T16:43:19Z", "ms": 527272999237.4675 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:47 on Mon 15 Sep to 12:00 on Tue 16 Sep.", "fact": "1986-09-15T09:47:23Z → 1986-09-16T07:59:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:12–20:45 on the 15th, 19:10–20:43 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 93 of 93 minutes on the 15th and 0 of 93 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 19467 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Monday 15 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": "1986-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-15", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Monday 15 September. Trayodaśī runs from 13:47 on Mon 15 Sep to 12:00 on Tue 16 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-09-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4641, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-09-16T11:59:51+04:00", "utc": "1986-09-16T07:59:51Z", "ms": 527241590986.8154 }, "end": { "local": "1986-09-17T10:33:18+04:00", "utc": "1986-09-17T06:33:18Z", "ms": 527322798441.87024 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1986-09-16T11:59:51+04:00", "utc": "1986-09-16T07:59:51Z", "ms": 527241590986.8154 }, "end": { "local": "1986-09-17T10:33:18+04:00", "utc": "1986-09-17T06:33:18Z", "ms": 527322798441.87024 } }, "kaala": "udaya-3", "days": [ { "local_date": "1986-09-16", "window": { "start": { "local": "1986-09-16T06:46:57+04:00", "utc": "1986-09-16T02:46:57Z", "ms": 527222817287.0705 }, "end": { "local": "1986-09-16T09:15:38+04:00", "utc": "1986-09-16T05:15:38Z", "ms": 527231737842.133 } }, "covered_min": 0, "window_min": 149, "qualifies": false }, { "local_date": "1986-09-17", "window": { "start": { "local": "1986-09-17T06:47:44+04:00", "utc": "1986-09-17T02:47:44Z", "ms": 527309263875.51794 }, "end": { "local": "1986-09-17T09:15:57+04:00", "utc": "1986-09-17T05:15:57Z", "ms": 527318157227.4387 } }, "covered_min": 148, "window_min": 148, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:00 on Tue 16 Sep to 10:33 on Wed 17 Sep.", "fact": "1986-09-16T07:59:51Z → 1986-09-17T06:33:18Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:47–09:16 on the 16th, 06:48–09:16 on the 17th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 0 of 149 minutes on the 16th and 148 of 148 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4641 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Erbil, 1986: Wednesday 17 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-17", "confidence": "determinate" } ], "quote": "In Erbil, Ananta Caturdaśī 1986 falls on Wednesday 17 September. Caturdaśī runs from 12:00 on Tue 16 Sep to 10:33 on Wed 17 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-09-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35157, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-09-21T10:02:09+04:00", "utc": "1986-09-21T06:02:09Z", "ms": 527666529295.8199 }, "end": { "local": "1986-09-22T11:25:26+04:00", "utc": "1986-09-22T07:25:26Z", "ms": 527757926285.5167 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-09-21T10:02:09+04:00", "utc": "1986-09-21T06:02:09Z", "ms": 527666529295.8199 }, "end": { "local": "1986-09-22T11:25:26+04:00", "utc": "1986-09-22T07:25:26Z", "ms": 527757926285.5167 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-09-21", "window": { "start": { "local": "1986-09-21T20:41:56+04:00", "utc": "1986-09-21T16:41:56Z", "ms": 527704915528.669 }, "end": { "local": "1986-09-21T20:41:56+04:00", "utc": "1986-09-21T16:41:56Z", "ms": 527704915528.669 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-09-22", "window": { "start": { "local": "1986-09-22T21:11:24+04:00", "utc": "1986-09-22T17:11:24Z", "ms": 527793083518.43274 }, "end": { "local": "1986-09-22T21:11:24+04:00", "utc": "1986-09-22T17:11:24Z", "ms": 527793083518.43274 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:02 on Sun 21 Sep to 11:25 on Mon 22 Sep.", "fact": "1986-09-21T06:02:09Z → 1986-09-22T07:25:26Z" }, { "step": "kaala", "text": "Moonrise is at 20:42 on the 21st and 21:11 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35157 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Sunday 21 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": "1986-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-21", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Sunday 21 September. Caturthī runs from 10:02 on Sun 21 Sep to 11:25 on Mon 22 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-09-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24455, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-09-23T13:20:03+04:00", "utc": "1986-09-23T09:20:03Z", "ms": 527851203406.5366 }, "end": { "local": "1986-09-24T15:37:02+04:00", "utc": "1986-09-24T11:37:02Z", "ms": 527945822113.6804 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-09-23T13:20:03+04:00", "utc": "1986-09-23T09:20:03Z", "ms": 527851203406.5366 }, "end": { "local": "1986-09-24T15:37:02+04:00", "utc": "1986-09-24T11:37:02Z", "ms": 527945822113.6804 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-09-23", "window": { "start": { "local": "1986-09-23T21:45:12+04:00", "utc": "1986-09-23T17:45:12Z", "ms": 527881511943.43713 }, "end": { "local": "1986-09-23T21:45:12+04:00", "utc": "1986-09-23T17:45:12Z", "ms": 527881511943.43713 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-09-24", "window": { "start": { "local": "1986-09-24T22:24:37+04:00", "utc": "1986-09-24T18:24:37Z", "ms": 527970277344.56946 }, "end": { "local": "1986-09-24T22:24:37+04:00", "utc": "1986-09-24T18:24:37Z", "ms": 527970277344.56946 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 13:20 on Tue 23 Sep to 15:37 on Wed 24 Sep.", "fact": "1986-09-23T09:20:03Z → 1986-09-24T11:37:02Z" }, { "step": "kaala", "text": "Moonrise is at 21:45 on the 23rd and 22:25 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24455 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Erbil, 1986: Tuesday 23 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-23", "confidence": "determinate" } ], "quote": "In Erbil, Candra Ṣaṣṭhī 1986 falls on Tuesday 23 September. Ṣaṣṭhī runs from 13:20 on Tue 23 Sep to 15:37 on Wed 24 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-25", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 220, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-09-25T18:04:14+04:00", "utc": "1986-09-25T14:04:14Z", "ms": 528041053648.1122 }, "end": { "local": "1986-09-26T20:27:48+04:00", "utc": "1986-09-26T16:27:48Z", "ms": 528136067932.25726 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-09-25T18:04:14+04:00", "utc": "1986-09-25T14:04:14Z", "ms": 528041053648.1122 }, "end": { "local": "1986-09-26T20:27:48+04:00", "utc": "1986-09-26T16:27:48Z", "ms": 528136067932.25726 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-09-25", "window": { "start": { "local": "1986-09-25T18:56:55+04:00", "utc": "1986-09-25T14:56:55Z", "ms": 528044215378.7074 }, "end": { "local": "1986-09-25T20:32:38+04:00", "utc": "1986-09-25T16:32:38Z", "ms": 528049958391.40234 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1986-09-26", "window": { "start": { "local": "1986-09-26T18:55:26+04:00", "utc": "1986-09-26T14:55:26Z", "ms": 528130526441.70233 }, "end": { "local": "1986-09-26T20:31:28+04:00", "utc": "1986-09-26T16:31:28Z", "ms": 528136287703.2503 } }, "covered_min": 92, "window_min": 96, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:04 on Thu 25 Sep to 20:28 on Fri 26 Sep.", "fact": "1986-09-25T14:04:14Z → 1986-09-26T16:27:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:57–20:33 on the 25th, 18:55–20:31 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 96 of 96 minutes on the 25th and 92 of 96 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "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 220 s < 300 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Erbil, 1986: Thursday 25 September.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "1986-09-25", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-25", "confidence": "boundary" } ], "quote": "In Erbil, Jitāṣṭamī (Jitiya) 1986 falls on Thursday 25 September. Aṣṭamī runs from 18:04 on Thu 25 Sep to 20:28 on Fri 26 Sep and covers all of pradoṣa that evening. It also reaches the next evening for 92 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 40 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12910, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-09-25T18:04:14+04:00", "utc": "1986-09-25T14:04:14Z", "ms": 528041053648.1122 }, "end": { "local": "1986-09-26T20:27:48+04:00", "utc": "1986-09-26T16:27:48Z", "ms": 528136067932.25726 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-09-25T18:04:14+04:00", "utc": "1986-09-25T14:04:14Z", "ms": 528041053648.1122 }, "end": { "local": "1986-09-26T20:27:48+04:00", "utc": "1986-09-26T16:27:48Z", "ms": 528136067932.25726 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-09-25", "window": { "start": { "local": "1986-09-25T23:10:32+04:00", "utc": "1986-09-25T19:10:32Z", "ms": 528059431815.2303 }, "end": { "local": "1986-09-25T23:10:32+04:00", "utc": "1986-09-25T19:10:32Z", "ms": 528059431815.2303 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-09-26", "window": { "start": { "local": "1986-09-27T00:02:58+04:00", "utc": "1986-09-26T20:02:58Z", "ms": 528148977522.08234 }, "end": { "local": "1986-09-27T00:02:58+04:00", "utc": "1986-09-26T20:02:58Z", "ms": 528148977522.08234 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:04 on Thu 25 Sep to 20:28 on Fri 26 Sep.", "fact": "1986-09-25T14:04:14Z → 1986-09-26T16:27:48Z" }, { "step": "kaala", "text": "Moonrise is at 23:11 on the 25th and 00:03 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12910 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Erbil, 1986: Thursday 25 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-25", "confidence": "determinate" } ], "quote": "In Erbil, Mahālakṣmī Vrata Samāpana 1986 falls on Thursday 25 September. Aṣṭamī runs from 18:04 on Thu 25 Sep to 20:28 on Fri 26 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-09-29", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20645, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-09-28T23:12:11+03:00", "utc": "1986-09-28T20:12:11Z", "ms": 528322330649.8693 }, "end": { "local": "1986-09-30T00:13:56+03:00", "utc": "1986-09-29T21:13:56Z", "ms": 528412435729.3018 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-09-28T23:12:11+03:00", "utc": "1986-09-28T20:12:11Z", "ms": 528322330649.8693 }, "end": { "local": "1986-09-30T00:13:56+03:00", "utc": "1986-09-29T21:13:56Z", "ms": 528412435729.3018 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-09-29", "window": { "start": { "local": "1986-09-29T05:57:12+03:00", "utc": "1986-09-29T02:57:12Z", "ms": 528346632396.9084 }, "end": { "local": "1986-09-29T05:57:12+03:00", "utc": "1986-09-29T02:57:12Z", "ms": 528346632396.9084 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-09-30", "window": { "start": { "local": "1986-09-30T05:58:01+03:00", "utc": "1986-09-30T02:58:01Z", "ms": 528433080981.32263 }, "end": { "local": "1986-09-30T05:58:01+03:00", "utc": "1986-09-30T02:58:01Z", "ms": 528433080981.32263 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:12 on Sun 28 Sep to 00:14 on Tue 30 Sep.", "fact": "1986-09-28T20:12:11Z → 1986-09-29T21:13:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 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 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 20645 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Erbil, 1986: Monday 29 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": "1986-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-09-29", "confidence": "determinate" } ], "quote": "In Erbil, Indirā Ekādaśī 1986 falls on Monday 29 September. Ekādaśī runs from 23:12 on Sun 28 Sep to 00:14 on Tue 30 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-09-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-10-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17513, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-10-01T00:35:43+03:00", "utc": "1986-09-30T21:35:43Z", "ms": 528500143452.8475 }, "end": { "local": "1986-10-02T00:17:31+03:00", "utc": "1986-10-01T21:17:31Z", "ms": 528585451266.6307 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-01T00:35:43+03:00", "utc": "1986-09-30T21:35:43Z", "ms": 528500143452.8475 }, "end": { "local": "1986-10-02T00:17:31+03:00", "utc": "1986-10-01T21:17:31Z", "ms": 528585451266.6307 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-09-30", "window": { "start": { "local": "1986-09-30T17:49:33+03:00", "utc": "1986-09-30T14:49:33Z", "ms": 528475773016.42847 }, "end": { "local": "1986-09-30T19:26:47+03:00", "utc": "1986-09-30T16:26:47Z", "ms": 528481607254.623 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1986-10-01", "window": { "start": { "local": "1986-10-01T17:48:05+03:00", "utc": "1986-10-01T14:48:05Z", "ms": 528562085385.5015 }, "end": { "local": "1986-10-01T19:25:38+03:00", "utc": "1986-10-01T16:25:38Z", "ms": 528567937850.07025 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:36 on Wed 1 Oct to 00:18 on Thu 2 Oct.", "fact": "1986-09-30T21:35:43Z → 1986-10-01T21:17:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:50–19:27 on the 30th, 17:48–19:26 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 97 minutes on the 30th and 98 of 98 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 17513 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Wednesday 1 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": "1986-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-01", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Wednesday 1 October. Trayodaśī runs from 00:36 on Wed 1 Oct to 00:18 on Thu 2 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-10-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-10-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-01", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 21, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-10-02T00:17:31+03:00", "utc": "1986-10-01T21:17:31Z", "ms": 528585451266.6307 }, "end": { "local": "1986-10-02T23:22:13+03:00", "utc": "1986-10-02T20:22:13Z", "ms": 528668533203.9076 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-02T00:17:31+03:00", "utc": "1986-10-01T21:17:31Z", "ms": 528585451266.6307 }, "end": { "local": "1986-10-02T23:22:13+03:00", "utc": "1986-10-02T20:22:13Z", "ms": 528668533203.9076 } }, "kaala": "nishita", "days": [ { "local_date": "1986-10-01", "window": { "start": { "local": "1986-10-01T23:29:52+03:00", "utc": "1986-10-01T20:29:52Z", "ms": 528582592127.6343 }, "end": { "local": "1986-10-02T00:17:52+03:00", "utc": "1986-10-01T21:17:52Z", "ms": 528585472127.6343 } }, "covered_min": 0, "window_min": 48, "qualifies": true }, { "local_date": "1986-10-02", "window": { "start": { "local": "1986-10-02T23:29:33+03:00", "utc": "1986-10-02T20:29:33Z", "ms": 528668973144.94025 }, "end": { "local": "1986-10-03T00:17:33+03:00", "utc": "1986-10-02T21:17:33Z", "ms": 528671853144.94025 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:18 on Thu 2 Oct to 23:22 on Thu 2 Oct.", "fact": "1986-10-01T21:17:31Z → 1986-10-02T20:22:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:30–00:18 on the 1st, 23:30–00:18 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Wednesday 1 October.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-10-01", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-01", "confidence": "boundary" } ], "quote": "In Erbil, Śivarātri 1986 falls on Wednesday 1 October. Caturdaśī runs from 00:18 on Thu 2 Oct to 23:22 on Thu 2 Oct and covers 0 of 48 minutes of niśītha that night. It is 0 min 21 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-10-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23431, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1986-10-02T23:22:13+03:00", "utc": "1986-10-02T20:22:13Z", "ms": 528668533203.9076 }, "end": { "local": "1986-10-03T21:54:46+03:00", "utc": "1986-10-03T18:54:46Z", "ms": 528749685616.62067 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-02T23:22:13+03:00", "utc": "1986-10-02T20:22:13Z", "ms": 528668533203.9076 }, "end": { "local": "1986-10-03T21:54:46+03:00", "utc": "1986-10-03T18:54:46Z", "ms": 528749685616.62067 } }, "kaala": "aparahna", "days": [ { "local_date": "1986-10-02", "window": { "start": { "local": "1986-10-02T13:03:50+03:00", "utc": "1986-10-02T10:03:50Z", "ms": 528631430408.7855 }, "end": { "local": "1986-10-02T15:25:14+03:00", "utc": "1986-10-02T12:25:14Z", "ms": 528639914255.125 } }, "covered_min": 0, "window_min": 141, "qualifies": false }, { "local_date": "1986-10-03", "window": { "start": { "local": "1986-10-03T13:03:18+03:00", "utc": "1986-10-03T10:03:18Z", "ms": 528717797990.4245 }, "end": { "local": "1986-10-03T15:24:15+03:00", "utc": "1986-10-03T12:24:15Z", "ms": 528726254591.094 } }, "covered_min": 141, "window_min": 141, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 23:22 on Thu 2 Oct to 21:55 on Fri 3 Oct.", "fact": "1986-10-02T20:22:13Z → 1986-10-03T18:54:46Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:04–15:25 on the 2nd, 13:03–15:24 on the 3rd.", "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 141 minutes on the 2nd and 141 of 141 on the 3rd.", "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 23431 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Erbil, 1986: Friday 3 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": "1986-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-03", "confidence": "determinate" } ], "quote": "In Erbil, Mahālaya Amāvāsyā 1986 falls on Friday 3 October. Amāvasyā runs from 23:22 on Thu 2 Oct to 21:55 on Fri 3 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27886, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-10-03T21:54:46+03:00", "utc": "1986-10-03T18:54:46Z", "ms": 528749685616.62067 }, "end": { "local": "1986-10-04T20:01:17+03:00", "utc": "1986-10-04T17:01:17Z", "ms": 528829276946.6685 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-03T21:54:46+03:00", "utc": "1986-10-03T18:54:46Z", "ms": 528749685616.62067 }, "end": { "local": "1986-10-04T20:01:17+03:00", "utc": "1986-10-04T17:01:17Z", "ms": 528829276946.6685 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-10-03", "window": { "start": { "local": "1986-10-03T11:28:50+03:00", "utc": "1986-10-03T08:28:50Z", "ms": 528712129690.0897 }, "end": { "local": "1986-10-03T12:16:50+03:00", "utc": "1986-10-03T09:16:50Z", "ms": 528715009690.0897 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-10-04", "window": { "start": { "local": "1986-10-04T11:28:31+03:00", "utc": "1986-10-04T08:28:31Z", "ms": 528798511224.204 }, "end": { "local": "1986-10-04T12:16:31+03:00", "utc": "1986-10-04T09:16:31Z", "ms": 528801391224.204 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:55 on Fri 3 Oct to 20:01 on Sat 4 Oct.", "fact": "1986-10-03T18:54:46Z → 1986-10-04T17:01:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 3rd, 11:29–12:17 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27886 s" }, { "step": "ruling", "text": "Navarātrārambha, Erbil, 1986: Saturday 4 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": "1986-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-04", "confidence": "determinate" } ], "quote": "In Erbil, Navarātrārambha (Navratri) 1986 falls on Saturday 4 October. Pratipadā runs from 21:55 on Fri 3 Oct to 20:01 on Sat 4 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-10-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2134, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-10-06T15:22:58+03:00", "utc": "1986-10-06T12:22:58Z", "ms": 528985378095.07794 }, "end": { "local": "1986-10-07T12:51:12+03:00", "utc": "1986-10-07T09:51:12Z", "ms": 529062672000.27075 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-06T15:22:58+03:00", "utc": "1986-10-06T12:22:58Z", "ms": 528985378095.07794 }, "end": { "local": "1986-10-07T12:51:12+03:00", "utc": "1986-10-07T09:51:12Z", "ms": 529062672000.27075 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-10-06", "window": { "start": { "local": "1986-10-06T11:27:55+03:00", "utc": "1986-10-06T08:27:55Z", "ms": 528971275345.47974 }, "end": { "local": "1986-10-06T12:15:55+03:00", "utc": "1986-10-06T09:15:55Z", "ms": 528974155345.47974 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-10-07", "window": { "start": { "local": "1986-10-07T11:27:38+03:00", "utc": "1986-10-07T08:27:38Z", "ms": 529057657964.3855 }, "end": { "local": "1986-10-07T12:15:38+03:00", "utc": "1986-10-07T09:15:38Z", "ms": 529060537964.3855 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:23 on Mon 6 Oct to 12:51 on Tue 7 Oct.", "fact": "1986-10-06T12:22:58Z → 1986-10-07T09:51:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 6th, 11:28–12:16 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2134 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Tuesday 7 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": "1986-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-07", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Tuesday 7 October. Caturthī runs from 15:23 on Mon 6 Oct to 12:51 on Tue 7 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-09", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2002, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-10-09T07:51:26+03:00", "utc": "1986-10-09T04:51:26Z", "ms": 529217485992.66754 }, "end": { "local": "1986-10-10T05:32:59+03:00", "utc": "1986-10-10T02:32:59Z", "ms": 529295579173.4066 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-09T07:51:26+03:00", "utc": "1986-10-09T04:51:26Z", "ms": 529217485992.66754 }, "end": { "local": "1986-10-10T05:32:59+03:00", "utc": "1986-10-10T02:32:59Z", "ms": 529295579173.4066 } }, "kaala": "udaya-1", "days": [ { "local_date": "1986-10-09", "window": { "start": { "local": "1986-10-09T06:05:30+03:00", "utc": "1986-10-09T03:05:30Z", "ms": 529211129673.9699 }, "end": { "local": "1986-10-09T06:51:34+03:00", "utc": "1986-10-09T03:51:34Z", "ms": 529213894304.1453 } }, "covered_min": 0, "window_min": 46, "qualifies": false }, { "local_date": "1986-10-10", "window": { "start": { "local": "1986-10-10T06:06:21+03:00", "utc": "1986-10-10T03:06:21Z", "ms": 529297580891.46014 }, "end": { "local": "1986-10-10T06:52:17+03:00", "utc": "1986-10-10T03:52:17Z", "ms": 529300336539.50836 } }, "covered_min": 0, "window_min": 46, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:51 on Thu 9 Oct to 05:33 on Fri 10 Oct.", "fact": "1986-10-09T04:51:26Z → 1986-10-10T02:32:59Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:05–06:52 on the 9th, 06:06–06:52 on the 10th.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 46 minutes on the 9th and 0 of 46 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2002 s" }, { "step": "ruling", "text": "Durgā Saptamī, Erbil, 1986: Thursday 9 October.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-10-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-09", "confidence": "boundary" } ], "quote": "In Erbil, Durgā Saptamī 1986 falls on Thursday 9 October. Saptamī runs from 07:51 on Thu 9 Oct to 05:33 on Fri 10 Oct, and reaches the first muhūrta after sunrise on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21229, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-10-10T05:32:59+03:00", "utc": "1986-10-10T02:32:59Z", "ms": 529295579173.4066 }, "end": { "local": "1986-10-11T03:27:20+03:00", "utc": "1986-10-11T00:27:20Z", "ms": 529374439836.9099 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-10T05:32:59+03:00", "utc": "1986-10-10T02:32:59Z", "ms": 529295579173.4066 }, "end": { "local": "1986-10-11T03:27:20+03:00", "utc": "1986-10-11T00:27:20Z", "ms": 529374439836.9099 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-10-10", "window": { "start": { "local": "1986-10-10T11:26:48+03:00", "utc": "1986-10-10T08:26:48Z", "ms": 529316808251.8218 }, "end": { "local": "1986-10-10T12:14:48+03:00", "utc": "1986-10-10T09:14:48Z", "ms": 529319688251.8218 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-10-11", "window": { "start": { "local": "1986-10-11T11:26:33+03:00", "utc": "1986-10-11T08:26:33Z", "ms": 529403192550.1631 }, "end": { "local": "1986-10-11T12:14:33+03:00", "utc": "1986-10-11T09:14:33Z", "ms": 529406072550.1631 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:33 on Fri 10 Oct to 03:27 on Sat 11 Oct.", "fact": "1986-10-10T02:32:59Z → 1986-10-11T00:27:20Z" }, { "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": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21229 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Erbil, 1986: Friday 10 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": "1986-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-10", "confidence": "determinate" } ], "quote": "In Erbil, Mahāṣṭamī (Durga Ashtami) 1986 falls on Friday 10 October. Aṣṭamī runs from 05:33 on Fri 10 Oct to 03:27 on Sat 11 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28753, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1986-10-11T03:27:20+03:00", "utc": "1986-10-11T00:27:20Z", "ms": 529374439836.9099 }, "end": { "local": "1986-10-12T01:37:33+03:00", "utc": "1986-10-11T22:37:33Z", "ms": 529454252658.15765 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-11T03:27:20+03:00", "utc": "1986-10-11T00:27:20Z", "ms": 529374439836.9099 }, "end": { "local": "1986-10-12T01:37:33+03:00", "utc": "1986-10-11T22:37:33Z", "ms": 529454252658.15765 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-10-11", "window": { "start": { "local": "1986-10-11T11:26:33+03:00", "utc": "1986-10-11T08:26:33Z", "ms": 529403192550.1631 }, "end": { "local": "1986-10-11T12:14:33+03:00", "utc": "1986-10-11T09:14:33Z", "ms": 529406072550.1631 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-10-12", "window": { "start": { "local": "1986-10-12T11:26:17+03:00", "utc": "1986-10-12T08:26:17Z", "ms": 529489577314.6738 }, "end": { "local": "1986-10-12T12:14:17+03:00", "utc": "1986-10-12T09:14:17Z", "ms": 529492457314.6738 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 03:27 on Sat 11 Oct to 01:38 on Sun 12 Oct.", "fact": "1986-10-11T00:27:20Z → 1986-10-11T22:37:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 11th, 11:26–12:14 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28753 s" }, { "step": "ruling", "text": "Mahānavamī, Erbil, 1986: Saturday 11 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": "1986-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-11", "confidence": "determinate" } ], "quote": "In Erbil, Mahānavamī 1986 falls on Saturday 11 October. Navamī runs from 03:27 on Sat 11 Oct to 01:38 on Sun 12 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9532, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1986-10-12T01:37:33+03:00", "utc": "1986-10-11T22:37:33Z", "ms": 529454252658.15765 }, "end": { "local": "1986-10-13T00:06:14+03:00", "utc": "1986-10-12T21:06:14Z", "ms": 529535173754.4273 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1986-10-12T01:37:33+03:00", "utc": "1986-10-11T22:37:33Z", "ms": 529454252658.15765 }, "end": { "local": "1986-10-12T20:11:22+03:00", "utc": "1986-10-12T17:11:22Z", "ms": 529521082190.4717 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1986-10-11T21:03:45+03:00", "utc": "1986-10-11T18:03:45Z", "ms": 529437825032.89557 }, "end": { "local": "1986-10-12T20:11:22+03:00", "utc": "1986-10-12T17:11:22Z", "ms": 529521082190.4717 } } }, "kaala": "daytime", "days": [ { "local_date": "1986-10-11", "window": { "start": { "local": "1986-10-11T06:07:12+03:00", "utc": "1986-10-11T03:07:12Z", "ms": 529384032399.57025 }, "end": { "local": "1986-10-11T17:33:53+03:00", "utc": "1986-10-11T14:33:53Z", "ms": 529425232700.7559 } }, "covered_min": 0, "window_min": 687, "qualifies": false }, { "local_date": "1986-10-12", "window": { "start": { "local": "1986-10-12T06:08:04+03:00", "utc": "1986-10-12T03:08:04Z", "ms": 529470484205.27264 }, "end": { "local": "1986-10-12T17:32:30+03:00", "utc": "1986-10-12T14:32:30Z", "ms": 529511550424.0751 } }, "covered_min": 684, "window_min": 684, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 01:38 on Sun 12 Oct to 00:06 on Mon 13 Oct, and Śravaṇa from 21:04 on Sat 11 Oct to 20:11 on Sun 12 Oct. They are together from 01:38 on Sun 12 Oct to 20:11 on Sun 12 Oct.", "fact": "1986-10-11T22:37:33Z → 1986-10-12T17:11:22Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:07–17:34 on the 11th, 06:08–17:33 on the 12th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 0 of 687 minutes on the 11th and 684 of 684 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9532 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Erbil, 1986: Sunday 12 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": "1986-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-12", "confidence": "determinate" } ], "quote": "In Erbil, Vijayā Daśamī (Dussehra) 1986 falls on Sunday 12 October. Daśamī runs from 01:38 on Sun 12 Oct to 00:06 on Mon 13 Oct and is with Śravaṇa in the day time that day, for 684 minutes.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-10-13", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21763, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-10-13T00:06:14+03:00", "utc": "1986-10-12T21:06:14Z", "ms": 529535173754.4273 }, "end": { "local": "1986-10-13T22:55:41+03:00", "utc": "1986-10-13T19:55:41Z", "ms": 529617340621.1091 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-13T00:06:14+03:00", "utc": "1986-10-12T21:06:14Z", "ms": 529535173754.4273 }, "end": { "local": "1986-10-13T22:55:41+03:00", "utc": "1986-10-13T19:55:41Z", "ms": 529617340621.1091 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-10-13", "window": { "start": { "local": "1986-10-13T06:08:56+03:00", "utc": "1986-10-13T03:08:56Z", "ms": 529556936316.53796 }, "end": { "local": "1986-10-13T06:08:56+03:00", "utc": "1986-10-13T03:08:56Z", "ms": 529556936316.53796 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-10-14", "window": { "start": { "local": "1986-10-14T06:09:49+03:00", "utc": "1986-10-14T03:09:49Z", "ms": 529643388742.149 }, "end": { "local": "1986-10-14T06:09:49+03:00", "utc": "1986-10-14T03:09:49Z", "ms": 529643388742.149 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:06 on Mon 13 Oct to 22:56 on Mon 13 Oct.", "fact": "1986-10-12T21:06:14Z → 1986-10-13T19:55:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:09 on the 13th and 06:10 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21763 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Erbil, 1986: Monday 13 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": "1986-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-13", "confidence": "determinate" } ], "quote": "In Erbil, Pāśāṅkuśā Ekādaśī 1986 falls on Monday 13 October. Ekādaśī runs from 00:06 on Mon 13 Oct to 22:56 on Mon 13 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-10-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-10-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9303, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-10-14T22:08:01+03:00", "utc": "1986-10-14T19:08:01Z", "ms": 529700880744.3258 }, "end": { "local": "1986-10-15T21:45:16+03:00", "utc": "1986-10-15T18:45:16Z", "ms": 529785915786.87683 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1986-10-14T22:08:01+03:00", "utc": "1986-10-14T19:08:01Z", "ms": 529700880744.3258 }, "end": { "local": "1986-10-15T21:45:16+03:00", "utc": "1986-10-15T18:45:16Z", "ms": 529785915786.87683 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-10-14", "window": { "start": { "local": "1986-10-14T17:29:48+03:00", "utc": "1986-10-14T14:29:48Z", "ms": 529684187904.2482 }, "end": { "local": "1986-10-14T19:11:15+03:00", "utc": "1986-10-14T16:11:15Z", "ms": 529690275049.2026 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1986-10-15", "window": { "start": { "local": "1986-10-15T17:28:28+03:00", "utc": "1986-10-15T14:28:28Z", "ms": 529770507726.5348 }, "end": { "local": "1986-10-15T19:10:13+03:00", "utc": "1986-10-15T16:10:13Z", "ms": 529776612639.4979 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:08 on Tue 14 Oct to 21:45 on Wed 15 Oct.", "fact": "1986-10-14T19:08:01Z → 1986-10-15T18:45:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:30–19:11 on the 14th, 17:28–19:10 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 101 minutes on the 14th and 102 of 102 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9303 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Wednesday 15 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": "1986-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-15", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Wednesday 15 October. Trayodaśī runs from 22:08 on Tue 14 Oct to 21:45 on Wed 15 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-10-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29130, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-10-21T02:48:22+03:00", "utc": "1986-10-20T23:48:22Z", "ms": 530236102397.941 }, "end": { "local": "1986-10-22T05:04:33+03:00", "utc": "1986-10-22T02:04:33Z", "ms": 530330673039.96484 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-21T02:48:22+03:00", "utc": "1986-10-20T23:48:22Z", "ms": 530236102397.941 }, "end": { "local": "1986-10-22T05:04:33+03:00", "utc": "1986-10-22T02:04:33Z", "ms": 530330673039.96484 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-10-20", "window": { "start": { "local": "1986-10-20T18:42:52+03:00", "utc": "1986-10-20T15:42:52Z", "ms": 530206972244.64905 }, "end": { "local": "1986-10-20T18:42:52+03:00", "utc": "1986-10-20T15:42:52Z", "ms": 530206972244.64905 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-10-21", "window": { "start": { "local": "1986-10-21T19:20:03+03:00", "utc": "1986-10-21T16:20:03Z", "ms": 530295603116.09686 }, "end": { "local": "1986-10-21T19:20:03+03:00", "utc": "1986-10-21T16:20:03Z", "ms": 530295603116.09686 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:48 on Tue 21 Oct to 05:05 on Wed 22 Oct.", "fact": "1986-10-20T23:48:22Z → 1986-10-22T02:04:33Z" }, { "step": "kaala", "text": "Moonrise is at 18:43 on the 20th and 19:20 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 20th and is on the 21st.", "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 29130 s" }, { "step": "ruling", "text": "Karaka Caturthī, Erbil, 1986: Tuesday 21 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": "1986-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-21", "confidence": "determinate" } ], "quote": "In Erbil, Karaka Caturthī (Karwa Chauth) 1986 falls on Tuesday 21 October. Caturthī runs from 02:48 on Tue 21 Oct to 05:05 on Wed 22 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-10-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29130, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-10-21T02:48:22+03:00", "utc": "1986-10-20T23:48:22Z", "ms": 530236102397.941 }, "end": { "local": "1986-10-22T05:04:33+03:00", "utc": "1986-10-22T02:04:33Z", "ms": 530330673039.96484 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-21T02:48:22+03:00", "utc": "1986-10-20T23:48:22Z", "ms": 530236102397.941 }, "end": { "local": "1986-10-22T05:04:33+03:00", "utc": "1986-10-22T02:04:33Z", "ms": 530330673039.96484 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-10-20", "window": { "start": { "local": "1986-10-20T18:42:52+03:00", "utc": "1986-10-20T15:42:52Z", "ms": 530206972244.64905 }, "end": { "local": "1986-10-20T18:42:52+03:00", "utc": "1986-10-20T15:42:52Z", "ms": 530206972244.64905 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-10-21", "window": { "start": { "local": "1986-10-21T19:20:03+03:00", "utc": "1986-10-21T16:20:03Z", "ms": 530295603116.09686 }, "end": { "local": "1986-10-21T19:20:03+03:00", "utc": "1986-10-21T16:20:03Z", "ms": 530295603116.09686 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:48 on Tue 21 Oct to 05:05 on Wed 22 Oct.", "fact": "1986-10-20T23:48:22Z → 1986-10-22T02:04:33Z" }, { "step": "kaala", "text": "Moonrise is at 18:43 on the 20th and 19:20 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 20th and is on the 21st.", "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 29130 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Tuesday 21 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": "1986-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-21", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Tuesday 21 October. Caturthī runs from 02:48 on Tue 21 Oct to 05:05 on Wed 22 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34187, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-10-25T12:23:32+03:00", "utc": "1986-10-25T09:23:32Z", "ms": 530616212361.21765 }, "end": { "local": "1986-10-26T14:20:16+03:00", "utc": "1986-10-26T11:20:16Z", "ms": 530709616037.43994 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-25T12:23:32+03:00", "utc": "1986-10-25T09:23:32Z", "ms": 530616212361.21765 }, "end": { "local": "1986-10-26T14:20:16+03:00", "utc": "1986-10-26T11:20:16Z", "ms": 530709616037.43994 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-10-25", "window": { "start": { "local": "1986-10-25T22:48:08+03:00", "utc": "1986-10-25T19:48:08Z", "ms": 530653688442.7072 }, "end": { "local": "1986-10-25T22:48:08+03:00", "utc": "1986-10-25T19:48:08Z", "ms": 530653688442.7072 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-10-26", "window": { "start": { "local": "1986-10-26T23:50:03+03:00", "utc": "1986-10-26T20:50:03Z", "ms": 530743803366.37714 }, "end": { "local": "1986-10-26T23:50:03+03:00", "utc": "1986-10-26T20:50:03Z", "ms": 530743803366.37714 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:24 on Sat 25 Oct to 14:20 on Sun 26 Oct.", "fact": "1986-10-25T09:23:32Z → 1986-10-26T11:20:16Z" }, { "step": "kaala", "text": "Moonrise is at 22:48 on the 25th and 23:50 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34187 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Erbil, 1986: Saturday 25 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-25", "confidence": "determinate" } ], "quote": "In Erbil, Ahoyī Aṣṭamī 1986 falls on Saturday 25 October. Aṣṭamī runs from 12:24 on Sat 25 Oct to 14:20 on Sun 26 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-10-29", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35703, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-10-28T16:23:47+03:00", "utc": "1986-10-28T13:23:47Z", "ms": 530889826599.92664 }, "end": { "local": "1986-10-29T16:18:41+03:00", "utc": "1986-10-29T13:18:41Z", "ms": 530975920638.6256 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-28T16:23:47+03:00", "utc": "1986-10-28T13:23:47Z", "ms": 530889826599.92664 }, "end": { "local": "1986-10-29T16:18:41+03:00", "utc": "1986-10-29T13:18:41Z", "ms": 530975920638.6256 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-10-28", "window": { "start": { "local": "1986-10-28T06:22:40+03:00", "utc": "1986-10-28T03:22:40Z", "ms": 530853759754.4025 }, "end": { "local": "1986-10-28T06:22:40+03:00", "utc": "1986-10-28T03:22:40Z", "ms": 530853759754.4025 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-10-29", "window": { "start": { "local": "1986-10-29T06:23:38+03:00", "utc": "1986-10-29T03:23:38Z", "ms": 530940217555.83997 }, "end": { "local": "1986-10-29T06:23:38+03:00", "utc": "1986-10-29T03:23:38Z", "ms": 530940217555.83997 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:24 on Tue 28 Oct to 16:19 on Wed 29 Oct.", "fact": "1986-10-28T13:23:47Z → 1986-10-29T13:18:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 28th and 06:24 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35703 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Erbil, 1986: Wednesday 29 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": "1986-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-29", "confidence": "determinate" } ], "quote": "In Erbil, Ramā Ekādaśī 1986 falls on Wednesday 29 October. Ekādaśī runs from 16:24 on Tue 28 Oct to 16:19 on Wed 29 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3160, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-10-29T16:18:41+03:00", "utc": "1986-10-29T13:18:41Z", "ms": 530975920638.6256 }, "end": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-29T16:18:41+03:00", "utc": "1986-10-29T13:18:41Z", "ms": 530975920638.6256 }, "end": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-10-29", "window": { "start": { "local": "1986-10-29T17:11:21+03:00", "utc": "1986-10-29T14:11:21Z", "ms": 530979080804.6182 }, "end": { "local": "1986-10-29T18:57:07+03:00", "utc": "1986-10-29T15:57:07Z", "ms": 530985426790.1074 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1986-10-30", "window": { "start": { "local": "1986-10-30T17:10:16+03:00", "utc": "1986-10-30T14:10:16Z", "ms": 531065415612.2307 }, "end": { "local": "1986-10-30T18:56:18+03:00", "utc": "1986-10-30T15:56:18Z", "ms": 531071778085.4622 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:19 on Wed 29 Oct to 15:28 on Thu 30 Oct.", "fact": "1986-10-29T13:18:41Z → 1986-10-30T12:27:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:11–18:57 on the 29th, 17:10–18:56 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 29th and 0 of 106 on the 30th.", "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 3160 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Erbil, 1986: Wednesday 29 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-29", "confidence": "determinate" } ], "quote": "In Erbil, Govatsa Dvādaśī (Vasu Baras) 1986 falls on Wednesday 29 October. Dvādaśī runs from 16:19 on Wed 29 Oct to 15:28 on Thu 30 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6165, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 }, "end": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 }, "end": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-10-30", "window": { "start": { "local": "1986-10-30T17:10:16+03:00", "utc": "1986-10-30T14:10:16Z", "ms": 531065415612.2307 }, "end": { "local": "1986-10-30T18:56:18+03:00", "utc": "1986-10-30T15:56:18Z", "ms": 531071778085.4622 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1986-10-31", "window": { "start": { "local": "1986-10-31T17:09:12+03:00", "utc": "1986-10-31T14:09:12Z", "ms": 531151751680.9076 }, "end": { "local": "1986-10-31T18:55:31+03:00", "utc": "1986-10-31T15:55:31Z", "ms": 531158130515.1612 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:28 on Thu 30 Oct to 13:54 on Fri 31 Oct.", "fact": "1986-10-30T12:27:31Z → 1986-10-31T10:53:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:56 on the 30th, 17:09–18:56 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 106 of 106 minutes on the 30th and 0 of 106 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6165 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Erbil, 1986: Thursday 30 October.", "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": "1986-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-30", "confidence": "determinate" } ], "quote": "In Erbil, Yama Dīpadāna 1986 falls on Thursday 30 October. Trayodaśī runs from 15:28 on Thu 30 Oct to 13:54 on Fri 31 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-10-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6165, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 }, "end": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-30T15:27:31+03:00", "utc": "1986-10-30T12:27:31Z", "ms": 531059250978.58563 }, "end": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-10-30", "window": { "start": { "local": "1986-10-30T17:10:16+03:00", "utc": "1986-10-30T14:10:16Z", "ms": 531065415612.2307 }, "end": { "local": "1986-10-30T18:56:18+03:00", "utc": "1986-10-30T15:56:18Z", "ms": 531071778085.4622 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "1986-10-31", "window": { "start": { "local": "1986-10-31T17:09:12+03:00", "utc": "1986-10-31T14:09:12Z", "ms": 531151751680.9076 }, "end": { "local": "1986-10-31T18:55:31+03:00", "utc": "1986-10-31T15:55:31Z", "ms": 531158130515.1612 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:28 on Thu 30 Oct to 13:54 on Fri 31 Oct.", "fact": "1986-10-30T12:27:31Z → 1986-10-31T10:53:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:56 on the 30th, 17:09–18:56 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 106 of 106 minutes on the 30th and 0 of 106 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 6165 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Thursday 30 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": "1986-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-30", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Thursday 30 October. Trayodaśī runs from 15:28 on Thu 30 Oct to 13:54 on Fri 31 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-10-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-10-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34221, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "end": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "end": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 } }, "kaala": "nishita", "days": [ { "local_date": "1986-10-31", "window": { "start": { "local": "1986-10-31T23:23:52+03:00", "utc": "1986-10-31T20:23:52Z", "ms": 531174232309.35864 }, "end": { "local": "1986-11-01T00:11:52+03:00", "utc": "1986-10-31T21:11:52Z", "ms": 531177112309.35864 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-11-01", "window": { "start": { "local": "1986-11-01T23:23:51+03:00", "utc": "1986-11-01T20:23:51Z", "ms": 531260630523.82446 }, "end": { "local": "1986-11-02T00:11:51+03:00", "utc": "1986-11-01T21:11:51Z", "ms": 531263510523.82446 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:54 on Fri 31 Oct to 11:43 on Sat 1 Nov.", "fact": "1986-10-31T10:53:31Z → 1986-11-01T08:42:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:24–00:12 on the 31st, 23:24–00:12 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34221 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Friday 31 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": "1986-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-10-31", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Friday 31 October. Caturdaśī runs from 13:54 on Fri 31 Oct to 11:43 on Sat 1 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-10-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18958, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "end": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-10-31T13:53:31+03:00", "utc": "1986-10-31T10:53:31Z", "ms": 531140011067.00354 }, "end": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 } }, "kaala": "arunodaya", "days": [ { "local_date": "1986-10-31", "window": { "start": { "local": "1986-10-31T04:39:32+03:00", "utc": "1986-10-31T01:39:32Z", "ms": 531106771688.2355 }, "end": { "local": "1986-10-31T06:25:34+03:00", "utc": "1986-10-31T03:25:34Z", "ms": 531113134161.467 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1986-11-01", "window": { "start": { "local": "1986-11-01T04:40:14+03:00", "utc": "1986-11-01T01:40:14Z", "ms": 531193214103.5561 }, "end": { "local": "1986-11-01T06:26:33+03:00", "utc": "1986-11-01T03:26:33Z", "ms": 531199592937.8097 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:54 on Fri 31 Oct to 11:43 on Sat 1 Nov.", "fact": "1986-10-31T10:53:31Z → 1986-11-01T08:42:31Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:40–06:26 on the 31st, 04:40–06:27 on the 1st.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 106 minutes on the 31st and 106 of 106 on the 1st.", "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 18958 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Erbil, 1986: Saturday 1 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": "1986-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-01", "confidence": "determinate" } ], "quote": "In Erbil, Naraka Caturdaśī (Choti Diwali) 1986 falls on Saturday 1 November. Caturdaśī runs from 13:54 on Fri 31 Oct to 11:43 on Sat 1 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19538, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "end": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "end": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-11-01", "window": { "start": { "local": "1986-11-01T17:08:09+03:00", "utc": "1986-11-01T14:08:09Z", "ms": 531238089040.3564 }, "end": { "local": "1986-11-01T18:54:44+03:00", "utc": "1986-11-01T15:54:44Z", "ms": 531244484102.6145 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1986-11-02", "window": { "start": { "local": "1986-11-02T17:07:08+03:00", "utc": "1986-11-02T14:07:08Z", "ms": 531324427719.45337 }, "end": { "local": "1986-11-02T18:53:59+03:00", "utc": "1986-11-02T15:53:59Z", "ms": 531330838870.2676 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 11:43 on Sat 1 Nov to 09:02 on Sun 2 Nov.", "fact": "1986-11-01T08:42:31Z → 1986-11-02T06:02:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:55 on the 1st, 17:07–18:54 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 107 of 107 minutes on the 1st and 0 of 107 on the 2nd.", "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 19538 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Erbil, 1986: Saturday 1 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": "1986-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-01", "confidence": "determinate" } ], "quote": "In Erbil, Lakṣmī Pūjā (Diwali) 1986 falls on Saturday 1 November. Amāvasyā runs from 11:43 on Sat 1 Nov to 09:02 on Sun 2 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31817, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "end": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-01T11:42:31+03:00", "utc": "1986-11-01T08:42:31Z", "ms": 531218550677.50476 }, "end": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 } }, "kaala": "nishita", "days": [ { "local_date": "1986-10-31", "window": { "start": { "local": "1986-10-31T23:23:52+03:00", "utc": "1986-10-31T20:23:52Z", "ms": 531174232309.35864 }, "end": { "local": "1986-11-01T00:11:52+03:00", "utc": "1986-10-31T21:11:52Z", "ms": 531177112309.35864 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-01", "window": { "start": { "local": "1986-11-01T23:23:51+03:00", "utc": "1986-11-01T20:23:51Z", "ms": 531260630523.82446 }, "end": { "local": "1986-11-02T00:11:51+03:00", "utc": "1986-11-01T21:11:51Z", "ms": 531263510523.82446 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 11:43 on Sat 1 Nov to 09:02 on Sun 2 Nov.", "fact": "1986-11-01T08:42:31Z → 1986-11-02T06:02:08Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:24–00:12 on the 31st, 23:24–00:12 on the 1st.", "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 31st and 48 of 48 on the 1st.", "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 31817 s" }, { "step": "ruling", "text": "Kālī Pūjā, Erbil, 1986: Saturday 1 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": "1986-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-01", "confidence": "determinate" } ], "quote": "In Erbil, Kālī Pūjā 1986 falls on Saturday 1 November. Amāvasyā runs from 11:43 on Sat 1 Nov to 09:02 on Sun 2 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8472, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-02", "window": { "start": { "local": "1986-11-02T11:23:20+03:00", "utc": "1986-11-02T08:23:20Z", "ms": 531303799863.3729 }, "end": { "local": "1986-11-02T12:11:20+03:00", "utc": "1986-11-02T09:11:20Z", "ms": 531306679863.3729 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-11-03", "window": { "start": { "local": "1986-11-03T11:23:20+03:00", "utc": "1986-11-03T08:23:20Z", "ms": 531390199548.46045 }, "end": { "local": "1986-11-03T12:11:20+03:00", "utc": "1986-11-03T09:11:20Z", "ms": 531393079548.46045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov.", "fact": "1986-11-02T06:02:08Z → 1986-11-03T03:01:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 2nd, 11:23–12:11 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8472 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Erbil, 1986: Sunday 2 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": "1986-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-02", "confidence": "determinate" } ], "quote": "In Erbil, Govardhana Pūjā 1986 falls on Sunday 2 November. Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29100, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-11-02", "window": { "start": { "local": "1986-11-02T17:07:08+03:00", "utc": "1986-11-02T14:07:08Z", "ms": 531324427719.45337 }, "end": { "local": "1986-11-02T18:53:59+03:00", "utc": "1986-11-02T15:53:59Z", "ms": 531330838870.2676 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1986-11-03", "window": { "start": { "local": "1986-11-03T17:06:08+03:00", "utc": "1986-11-03T14:06:08Z", "ms": 531410767746.36084 }, "end": { "local": "1986-11-03T18:53:15+03:00", "utc": "1986-11-03T15:53:15Z", "ms": 531417194839.64746 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov.", "fact": "1986-11-02T06:02:08Z → 1986-11-03T03:01:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:07–18:54 on the 2nd, 17:06–18:53 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 107 of 107 minutes on the 2nd and 0 of 107 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29100 s" }, { "step": "ruling", "text": "Bali Pūjā, Erbil, 1986: Sunday 2 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": "1986-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-02", "confidence": "determinate" } ], "quote": "In Erbil, Bali Pūjā 1986 falls on Sunday 2 November. Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1646, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-02T09:02:08+03:00", "utc": "1986-11-02T06:02:08Z", "ms": 531295327717.6174 }, "end": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 } }, "kaala": "purvahna", "days": [ { "local_date": "1986-11-02", "window": { "start": { "local": "1986-11-02T06:27:32+03:00", "utc": "1986-11-02T03:27:32Z", "ms": 531286052007.2925 }, "end": { "local": "1986-11-02T10:00:44+03:00", "utc": "1986-11-02T07:00:44Z", "ms": 531298843911.3461 } }, "covered_min": 59, "window_min": 213, "qualifies": true }, { "local_date": "1986-11-03", "window": { "start": { "local": "1986-11-03T06:28:31+03:00", "utc": "1986-11-03T03:28:31Z", "ms": 531372511350.56006 }, "end": { "local": "1986-11-03T10:01:03+03:00", "utc": "1986-11-03T07:01:03Z", "ms": 531385263482.49365 } }, "covered_min": 0, "window_min": 213, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov.", "fact": "1986-11-02T06:02:08Z → 1986-11-03T03:01:06Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:28–10:01 on the 2nd, 06:29–10:01 on the 3rd.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 59 of 213 minutes on the 2nd and 0 of 213 on the 3rd.", "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 1646 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Erbil, 1986: Sunday 2 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": "1986-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-02", "confidence": "determinate" } ], "quote": "In Erbil, Dyūta Pratipad 1986 falls on Sunday 2 November. Pratipadā runs from 09:02 on Sun 2 Nov to 06:01 on Mon 3 Nov and covers 59 of 213 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19334, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 }, "end": { "local": "1986-11-04T02:48:40+03:00", "utc": "1986-11-03T23:48:40Z", "ms": 531445719543.16077 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-03T06:01:06+03:00", "utc": "1986-11-03T03:01:06Z", "ms": 531370865777.2084 }, "end": { "local": "1986-11-04T02:48:40+03:00", "utc": "1986-11-03T23:48:40Z", "ms": 531445719543.16077 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-03", "window": { "start": { "local": "1986-11-03T11:23:20+03:00", "utc": "1986-11-03T08:23:20Z", "ms": 531390199548.46045 }, "end": { "local": "1986-11-03T12:11:20+03:00", "utc": "1986-11-03T09:11:20Z", "ms": 531393079548.46045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-11-04", "window": { "start": { "local": "1986-11-04T11:23:20+03:00", "utc": "1986-11-04T08:23:20Z", "ms": 531476600047.41736 }, "end": { "local": "1986-11-04T12:11:20+03:00", "utc": "1986-11-04T09:11:20Z", "ms": 531479480047.41736 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 06:01 on Mon 3 Nov to 02:49 on Tue 4 Nov.", "fact": "1986-11-03T03:01:06Z → 1986-11-03T23:48:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 3rd, 11:23–12:11 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19334 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Erbil, 1986: Monday 3 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": "1986-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-03", "confidence": "determinate" } ], "quote": "In Erbil, Yama Dvitīyā (Bhai Dooj) 1986 falls on Monday 3 November. Dvitīyā runs from 06:01 on Mon 3 Nov to 02:49 on Tue 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29702, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-11-04T23:34:07+03:00", "utc": "1986-11-04T20:34:07Z", "ms": 531520446720.7837 }, "end": { "local": "1986-11-05T20:26:24+03:00", "utc": "1986-11-05T17:26:24Z", "ms": 531595583750.3437 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-04T23:34:07+03:00", "utc": "1986-11-04T20:34:07Z", "ms": 531520446720.7837 }, "end": { "local": "1986-11-05T20:26:24+03:00", "utc": "1986-11-05T17:26:24Z", "ms": 531595583750.3437 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-04", "window": { "start": { "local": "1986-11-04T11:23:20+03:00", "utc": "1986-11-04T08:23:20Z", "ms": 531476600047.41736 }, "end": { "local": "1986-11-04T12:11:20+03:00", "utc": "1986-11-04T09:11:20Z", "ms": 531479480047.41736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-05", "window": { "start": { "local": "1986-11-05T11:23:21+03:00", "utc": "1986-11-05T08:23:21Z", "ms": 531563001362.636 }, "end": { "local": "1986-11-05T12:11:21+03:00", "utc": "1986-11-05T09:11:21Z", "ms": 531565881362.636 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:34 on Tue 4 Nov to 20:26 on Wed 5 Nov.", "fact": "1986-11-04T20:34:07Z → 1986-11-05T17:26:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 4th, 11:23–12:11 on the 5th.", "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 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29702 s" }, { "step": "ruling", "text": "Nāga Caturthī, Erbil, 1986: Wednesday 5 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": "1986-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-05", "confidence": "determinate" } ], "quote": "In Erbil, Nāga Caturthī 1986 falls on Wednesday 5 November. Caturthī runs from 23:34 on Tue 4 Nov to 20:26 on Wed 5 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-11-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29702, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-11-04T23:34:07+03:00", "utc": "1986-11-04T20:34:07Z", "ms": 531520446720.7837 }, "end": { "local": "1986-11-05T20:26:24+03:00", "utc": "1986-11-05T17:26:24Z", "ms": 531595583750.3437 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-04T23:34:07+03:00", "utc": "1986-11-04T20:34:07Z", "ms": 531520446720.7837 }, "end": { "local": "1986-11-05T20:26:24+03:00", "utc": "1986-11-05T17:26:24Z", "ms": 531595583750.3437 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-04", "window": { "start": { "local": "1986-11-04T11:23:20+03:00", "utc": "1986-11-04T08:23:20Z", "ms": 531476600047.41736 }, "end": { "local": "1986-11-04T12:11:20+03:00", "utc": "1986-11-04T09:11:20Z", "ms": 531479480047.41736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-05", "window": { "start": { "local": "1986-11-05T11:23:21+03:00", "utc": "1986-11-05T08:23:21Z", "ms": 531563001362.636 }, "end": { "local": "1986-11-05T12:11:21+03:00", "utc": "1986-11-05T09:11:21Z", "ms": 531565881362.636 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:34 on Tue 4 Nov to 20:26 on Wed 5 Nov.", "fact": "1986-11-04T20:34:07Z → 1986-11-05T17:26:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 4th, 11:23–12:11 on the 5th.", "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 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29702 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Wednesday 5 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": "1986-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-05", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Wednesday 5 November. Caturthī runs from 23:34 on Tue 4 Nov to 20:26 on Wed 5 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10303, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-11-06T17:33:43+03:00", "utc": "1986-11-06T14:33:43Z", "ms": 531671622826.09033 }, "end": { "local": "1986-11-07T15:03:09+03:00", "utc": "1986-11-07T12:03:09Z", "ms": 531748989039.85706 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-06T17:33:43+03:00", "utc": "1986-11-06T14:33:43Z", "ms": 531671622826.09033 }, "end": { "local": "1986-11-07T15:03:09+03:00", "utc": "1986-11-07T12:03:09Z", "ms": 531748989039.85706 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-06", "window": { "start": { "local": "1986-11-06T11:23:23+03:00", "utc": "1986-11-06T08:23:23Z", "ms": 531649403496.3285 }, "end": { "local": "1986-11-06T12:11:23+03:00", "utc": "1986-11-06T09:11:23Z", "ms": 531652283496.3285 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-07", "window": { "start": { "local": "1986-11-07T11:23:26+03:00", "utc": "1986-11-07T08:23:26Z", "ms": 531735806450.911 }, "end": { "local": "1986-11-07T12:11:26+03:00", "utc": "1986-11-07T09:11:26Z", "ms": 531738686450.911 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:34 on Thu 6 Nov to 15:03 on Fri 7 Nov.", "fact": "1986-11-06T14:33:43Z → 1986-11-07T12:03:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 6th, 11:23–12:11 on the 7th.", "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 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10303 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Erbil, 1986: Friday 7 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": "1986-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-07", "confidence": "determinate" } ], "quote": "In Erbil, Sūrya Ṣaṣṭhī (Chhath) 1986 falls on Friday 7 November. Ṣaṣṭhī runs from 17:34 on Thu 6 Nov to 15:03 on Fri 7 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 326, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1986-11-08T13:00:19+03:00", "utc": "1986-11-08T10:00:19Z", "ms": 531828018525.92615 }, "end": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-08T13:00:19+03:00", "utc": "1986-11-08T10:00:19Z", "ms": 531828018525.92615 }, "end": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-08", "window": { "start": { "local": "1986-11-08T11:23:30+03:00", "utc": "1986-11-08T08:23:30Z", "ms": 531822210229.1977 }, "end": { "local": "1986-11-08T12:11:30+03:00", "utc": "1986-11-08T09:11:30Z", "ms": 531825090229.1977 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-09", "window": { "start": { "local": "1986-11-09T11:23:35+03:00", "utc": "1986-11-09T08:23:35Z", "ms": 531908614834.40027 }, "end": { "local": "1986-11-09T12:11:35+03:00", "utc": "1986-11-09T09:11:35Z", "ms": 531911494834.40027 } }, "covered_min": 5, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:00 on Sat 8 Nov to 11:29 on Sun 9 Nov.", "fact": "1986-11-08T10:00:19Z → 1986-11-09T08:29:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 8th, 11:24–12:12 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 5 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 326 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Erbil, 1986: Sunday 9 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": "1986-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-09", "confidence": "determinate" } ], "quote": "In Erbil, Gopāṣṭamī 1986 falls on Sunday 9 November. Aṣṭamī runs from 13:00 on Sat 8 Nov to 11:29 on Sun 9 Nov and covers 5 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 326, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 }, "end": { "local": "1986-11-10T10:31:10+03:00", "utc": "1986-11-10T07:31:10Z", "ms": 531991869852.8285 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 }, "end": { "local": "1986-11-10T10:31:10+03:00", "utc": "1986-11-10T07:31:10Z", "ms": 531991869852.8285 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-09", "window": { "start": { "local": "1986-11-09T11:23:35+03:00", "utc": "1986-11-09T08:23:35Z", "ms": 531908614834.40027 }, "end": { "local": "1986-11-09T12:11:35+03:00", "utc": "1986-11-09T09:11:35Z", "ms": 531911494834.40027 } }, "covered_min": 43, "window_min": 48, "qualifies": true }, { "local_date": "1986-11-10", "window": { "start": { "local": "1986-11-10T11:23:40+03:00", "utc": "1986-11-10T08:23:40Z", "ms": 531995020269.9873 }, "end": { "local": "1986-11-10T12:11:40+03:00", "utc": "1986-11-10T09:11:40Z", "ms": 531997900269.9873 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 11:29 on Sun 9 Nov to 10:31 on Mon 10 Nov.", "fact": "1986-11-09T08:29:01Z → 1986-11-10T07:31:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 9th, 11:24–12:12 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 43 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 326 s" }, { "step": "ruling", "text": "Durgā Navamī, Erbil, 1986: Sunday 9 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": "1986-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-09", "confidence": "determinate" } ], "quote": "In Erbil, Durgā Navamī 1986 falls on Sunday 9 November. Navamī runs from 11:29 on Sun 9 Nov to 10:31 on Mon 10 Nov and covers 43 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1652, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 }, "end": { "local": "1986-11-10T10:31:10+03:00", "utc": "1986-11-10T07:31:10Z", "ms": 531991869852.8285 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-09T11:29:01+03:00", "utc": "1986-11-09T08:29:01Z", "ms": 531908940771.0297 }, "end": { "local": "1986-11-10T10:31:10+03:00", "utc": "1986-11-10T07:31:10Z", "ms": 531991869852.8285 } }, "kaala": "purvahna", "days": [ { "local_date": "1986-11-09", "window": { "start": { "local": "1986-11-09T06:34:32+03:00", "utc": "1986-11-09T03:34:32Z", "ms": 531891271874.0604 }, "end": { "local": "1986-11-09T10:03:14+03:00", "utc": "1986-11-09T07:03:14Z", "ms": 531903793847.6203 } }, "covered_min": 0, "window_min": 209, "qualifies": false }, { "local_date": "1986-11-10", "window": { "start": { "local": "1986-11-10T06:35:32+03:00", "utc": "1986-11-10T03:35:32Z", "ms": 531977732481.5177 }, "end": { "local": "1986-11-10T10:03:38+03:00", "utc": "1986-11-10T07:03:38Z", "ms": 531990217673.8308 } }, "covered_min": 208, "window_min": 208, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 11:29 on Sun 9 Nov to 10:31 on Mon 10 Nov.", "fact": "1986-11-09T08:29:01Z → 1986-11-10T07:31:10Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:35–10:03 on the 9th, 06:36–10:04 on the 10th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 209 minutes on the 9th and 208 of 208 on the 10th.", "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 1652 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Erbil, 1986: Monday 10 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": "1986-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-10", "confidence": "determinate" } ], "quote": "In Erbil, Akṣaya Navamī (Amla Navami) 1986 falls on Monday 10 November. Navamī runs from 11:29 on Sun 9 Nov to 10:31 on Mon 10 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-11-12", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12616, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-11-11T10:06:49+03:00", "utc": "1986-11-11T07:06:49Z", "ms": 532076809064.73755 }, "end": { "local": "1986-11-12T10:14:30+03:00", "utc": "1986-11-12T07:14:30Z", "ms": 532163670386.7509 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-11T10:06:49+03:00", "utc": "1986-11-11T07:06:49Z", "ms": 532076809064.73755 }, "end": { "local": "1986-11-12T10:14:30+03:00", "utc": "1986-11-12T07:14:30Z", "ms": 532163670386.7509 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-11-11", "window": { "start": { "local": "1986-11-11T06:36:33+03:00", "utc": "1986-11-11T03:36:33Z", "ms": 532064193174.7571 }, "end": { "local": "1986-11-11T06:36:33+03:00", "utc": "1986-11-11T03:36:33Z", "ms": 532064193174.7571 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-11-12", "window": { "start": { "local": "1986-11-12T06:37:34+03:00", "utc": "1986-11-12T03:37:34Z", "ms": 532150653930.3774 }, "end": { "local": "1986-11-12T06:37:34+03:00", "utc": "1986-11-12T03:37:34Z", "ms": 532150653930.3774 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:07 on Tue 11 Nov to 10:15 on Wed 12 Nov.", "fact": "1986-11-11T07:06:49Z → 1986-11-12T07:14:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:37 on the 11th and 06:38 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 12616 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Erbil, 1986: Wednesday 12 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": "1986-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-12", "confidence": "determinate" } ], "quote": "In Erbil, Prabodhinī Ekādaśī 1986 falls on Wednesday 12 November. Ekādaśī runs from 10:07 on Tue 11 Nov to 10:15 on Wed 12 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-11-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-11-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18068, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-11-13T10:51:45+03:00", "utc": "1986-11-13T07:51:45Z", "ms": 532252305191.2714 }, "end": { "local": "1986-11-14T11:55:38+03:00", "utc": "1986-11-14T08:55:38Z", "ms": 532342537669.0627 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-13T10:51:45+03:00", "utc": "1986-11-13T07:51:45Z", "ms": 532252305191.2714 }, "end": { "local": "1986-11-14T11:55:38+03:00", "utc": "1986-11-14T08:55:38Z", "ms": 532342537669.0627 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-11-13", "window": { "start": { "local": "1986-11-13T16:57:28+03:00", "utc": "1986-11-13T13:57:28Z", "ms": 532274248461.71655 }, "end": { "local": "1986-11-13T18:47:05+03:00", "utc": "1986-11-13T15:47:05Z", "ms": 532280825404.477 } }, "covered_min": 110, "window_min": 110, "qualifies": true }, { "local_date": "1986-11-14", "window": { "start": { "local": "1986-11-14T16:56:45+03:00", "utc": "1986-11-14T13:56:45Z", "ms": 532360605232.68274 }, "end": { "local": "1986-11-14T18:46:36+03:00", "utc": "1986-11-14T15:46:36Z", "ms": 532367196045.5157 } }, "covered_min": 0, "window_min": 110, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:52 on Thu 13 Nov to 11:56 on Fri 14 Nov.", "fact": "1986-11-13T07:51:45Z → 1986-11-14T08:55:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:57–18:47 on the 13th, 16:57–18:47 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 110 of 110 minutes on the 13th and 0 of 110 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 18068 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Thursday 13 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": "1986-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-13", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Thursday 13 November. Trayodaśī runs from 10:52 on Thu 13 Nov to 11:56 on Fri 14 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-11-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29608, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-11-15T13:23:10+03:00", "utc": "1986-11-15T10:23:10Z", "ms": 532434190346.60693 }, "end": { "local": "1986-11-16T15:11:33+03:00", "utc": "1986-11-16T12:11:33Z", "ms": 532527092930.0373 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-15T13:23:10+03:00", "utc": "1986-11-15T10:23:10Z", "ms": 532434190346.60693 }, "end": { "local": "1986-11-16T15:11:33+03:00", "utc": "1986-11-16T12:11:33Z", "ms": 532527092930.0373 } }, "kaala": "nishita", "days": [ { "local_date": "1986-11-15", "window": { "start": { "local": "1986-11-15T23:24:50+03:00", "utc": "1986-11-15T20:24:50Z", "ms": 532470290394.67017 }, "end": { "local": "1986-11-16T00:12:50+03:00", "utc": "1986-11-15T21:12:50Z", "ms": 532473170394.67017 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-11-16", "window": { "start": { "local": "1986-11-16T23:25:01+03:00", "utc": "1986-11-16T20:25:01Z", "ms": 532556700839.3535 }, "end": { "local": "1986-11-17T00:13:01+03:00", "utc": "1986-11-16T21:13:01Z", "ms": 532559580839.3535 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:23 on Sat 15 Nov to 15:12 on Sun 16 Nov.", "fact": "1986-11-15T10:23:10Z → 1986-11-16T12:11:33Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 15th, 23:25–00:13 on the 16th.", "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 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29608 s" }, { "step": "ruling", "text": "Rāsayātrā, Erbil, 1986: Saturday 15 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": "1986-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-15", "confidence": "determinate" } ], "quote": "In Erbil, Rāsayātrā 1986 falls on Saturday 15 November. Pūrṇimā runs from 13:23 on Sat 15 Nov to 15:12 on Sun 16 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4250, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-11-15T13:23:10+03:00", "utc": "1986-11-15T10:23:10Z", "ms": 532434190346.60693 }, "end": { "local": "1986-11-16T15:11:33+03:00", "utc": "1986-11-16T12:11:33Z", "ms": 532527092930.0373 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1986-11-15T13:23:10+03:00", "utc": "1986-11-15T10:23:10Z", "ms": 532434190346.60693 }, "end": { "local": "1986-11-16T15:11:33+03:00", "utc": "1986-11-16T12:11:33Z", "ms": 532527092930.0373 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-11-15", "window": { "start": { "local": "1986-11-15T11:24:20+03:00", "utc": "1986-11-15T08:24:20Z", "ms": 532427060016.1472 }, "end": { "local": "1986-11-15T12:12:20+03:00", "utc": "1986-11-15T09:12:20Z", "ms": 532429940016.1472 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-16", "window": { "start": { "local": "1986-11-16T11:24:30+03:00", "utc": "1986-11-16T08:24:30Z", "ms": 532513470494.5891 }, "end": { "local": "1986-11-16T12:12:30+03:00", "utc": "1986-11-16T09:12:30Z", "ms": 532516350494.5891 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:23 on Sat 15 Nov to 15:12 on Sun 16 Nov.", "fact": "1986-11-15T10:23:10Z → 1986-11-16T12:11:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 15th, 11:25–12:13 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4250 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Erbil, 1986: Sunday 16 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": "1986-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-16", "confidence": "determinate" } ], "quote": "In Erbil, Kārtikī Pūrṇimā 1986 falls on Sunday 16 November. Pūrṇimā runs from 13:23 on Sat 15 Nov to 15:12 on Sun 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-11-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12145, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-11-19T22:09:03+03:00", "utc": "1986-11-19T19:09:03Z", "ms": 532811342984.6922 }, "end": { "local": "1986-11-21T00:42:45+03:00", "utc": "1986-11-20T21:42:45Z", "ms": 532906965115.85614 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-11-19T22:09:03+03:00", "utc": "1986-11-19T19:09:03Z", "ms": 532811342984.6922 }, "end": { "local": "1986-11-21T00:42:45+03:00", "utc": "1986-11-20T21:42:45Z", "ms": 532906965115.85614 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-11-19", "window": { "start": { "local": "1986-11-19T18:46:38+03:00", "utc": "1986-11-19T15:46:38Z", "ms": 532799198263.95624 }, "end": { "local": "1986-11-19T18:46:38+03:00", "utc": "1986-11-19T15:46:38Z", "ms": 532799198263.95624 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-11-20", "window": { "start": { "local": "1986-11-20T19:40:03+03:00", "utc": "1986-11-20T16:40:03Z", "ms": 532888802975.219 }, "end": { "local": "1986-11-20T19:40:03+03:00", "utc": "1986-11-20T16:40:03Z", "ms": 532888802975.219 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:09 on Wed 19 Nov to 00:43 on Fri 21 Nov.", "fact": "1986-11-19T19:09:03Z → 1986-11-20T21:42:45Z" }, { "step": "kaala", "text": "Moonrise is at 18:47 on the 19th and 19:40 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 19th and is on the 20th.", "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 12145 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Thursday 20 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": "1986-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-20", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Thursday 20 November. Caturthī runs from 22:09 on Wed 19 Nov to 00:43 on Fri 21 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-11-28", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 897, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-11-27T08:21:41+03:00", "utc": "1986-11-27T05:21:41Z", "ms": 533452901227.2244 }, "end": { "local": "1986-11-28T07:08:28+03:00", "utc": "1986-11-28T04:08:28Z", "ms": 533534907634.13 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-11-27T08:21:41+03:00", "utc": "1986-11-27T05:21:41Z", "ms": 533452901227.2244 }, "end": { "local": "1986-11-28T07:08:28+03:00", "utc": "1986-11-28T04:08:28Z", "ms": 533534907634.13 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-11-27", "window": { "start": { "local": "1986-11-27T06:52:33+03:00", "utc": "1986-11-27T03:52:33Z", "ms": 533447553449.58875 }, "end": { "local": "1986-11-27T06:52:33+03:00", "utc": "1986-11-27T03:52:33Z", "ms": 533447553449.58875 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1986-11-28", "window": { "start": { "local": "1986-11-28T06:53:31+03:00", "utc": "1986-11-28T03:53:31Z", "ms": 533534011021.0967 }, "end": { "local": "1986-11-28T06:53:31+03:00", "utc": "1986-11-28T03:53:31Z", "ms": 533534011021.0967 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:22 on Thu 27 Nov to 07:08 on Fri 28 Nov.", "fact": "1986-11-27T05:21:41Z → 1986-11-28T04:08:28Z" }, { "step": "kaala", "text": "Sunrise is at 06:53 on the 27th and 06:54 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 897 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Erbil, 1986: Friday 28 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": "1986-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-28", "confidence": "determinate" } ], "quote": "In Erbil, Utpannā Ekādaśī 1986 falls on Friday 28 November. Ekādaśī runs from 08:22 on Thu 27 Nov to 07:08 on Fri 28 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-11-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27978, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-11-29T05:08:45+03:00", "utc": "1986-11-29T02:08:45Z", "ms": 533614124702.8754 }, "end": { "local": "1986-11-30T02:28:40+03:00", "utc": "1986-11-29T23:28:40Z", "ms": 533690919814.7503 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-11-29T05:08:45+03:00", "utc": "1986-11-29T02:08:45Z", "ms": 533614124702.8754 }, "end": { "local": "1986-11-30T02:28:40+03:00", "utc": "1986-11-29T23:28:40Z", "ms": 533690919814.7503 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-11-28", "window": { "start": { "local": "1986-11-28T16:49:50+03:00", "utc": "1986-11-28T13:49:50Z", "ms": 533569790412.9078 }, "end": { "local": "1986-11-28T18:42:27+03:00", "utc": "1986-11-28T15:42:27Z", "ms": 533576547431.0042 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "1986-11-29", "window": { "start": { "local": "1986-11-29T16:49:35+03:00", "utc": "1986-11-29T13:49:35Z", "ms": 533656175269.59 }, "end": { "local": "1986-11-29T18:42:22+03:00", "utc": "1986-11-29T15:42:22Z", "ms": 533662941831.1242 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:09 on Sat 29 Nov to 02:29 on Sun 30 Nov.", "fact": "1986-11-29T02:08:45Z → 1986-11-29T23:28:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:50–18:42 on the 28th, 16:50–18:42 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 113 minutes on the 28th and 113 of 113 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 27978 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Saturday 29 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": "1986-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-29", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Saturday 29 November. Trayodaśī runs from 05:09 on Sat 29 Nov to 02:29 on Sun 30 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-11-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-11-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-11-29", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 733, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-11-30T02:28:40+03:00", "utc": "1986-11-29T23:28:40Z", "ms": 533690919814.7503 }, "end": { "local": "1986-11-30T23:16:38+03:00", "utc": "1986-11-30T20:16:38Z", "ms": 533765797829.5356 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-11-30T02:28:40+03:00", "utc": "1986-11-29T23:28:40Z", "ms": 533690919814.7503 }, "end": { "local": "1986-11-30T23:16:38+03:00", "utc": "1986-11-30T20:16:38Z", "ms": 533765797829.5356 } }, "kaala": "nishita", "days": [ { "local_date": "1986-11-29", "window": { "start": { "local": "1986-11-29T23:28:30+03:00", "utc": "1986-11-29T20:28:30Z", "ms": 533680109875.34314 }, "end": { "local": "1986-11-30T00:16:30+03:00", "utc": "1986-11-29T21:16:30Z", "ms": 533682989875.34314 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-11-30", "window": { "start": { "local": "1986-11-30T23:28:51+03:00", "utc": "1986-11-30T20:28:51Z", "ms": 533766531202.00916 }, "end": { "local": "1986-12-01T00:16:51+03:00", "utc": "1986-11-30T21:16:51Z", "ms": 533769411202.00916 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:29 on Sun 30 Nov to 23:17 on Sun 30 Nov.", "fact": "1986-11-29T23:28:40Z → 1986-11-30T20:16:38Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:28–00:16 on the 29th, 23:29–00:17 on the 30th.", "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 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 733 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Saturday 29 November.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1986-11-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-11-29", "confidence": "boundary" } ], "quote": "In Erbil, Śivarātri 1986 falls on Saturday 29 November. Caturdaśī runs from 02:29 on Sun 30 Nov to 23:17 on Sun 30 Nov, and reaches niśītha on neither day.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-11-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/vinayaka-chaturthi?on=1986-12-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10286, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-12-04T08:38:31+03:00", "utc": "1986-12-04T05:38:31Z", "ms": 534058710880.49365 }, "end": { "local": "1986-12-05T05:26:22+03:00", "utc": "1986-12-05T02:26:22Z", "ms": 534133582253.7045 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-04T08:38:31+03:00", "utc": "1986-12-04T05:38:31Z", "ms": 534058710880.49365 }, "end": { "local": "1986-12-05T05:26:22+03:00", "utc": "1986-12-05T02:26:22Z", "ms": 534133582253.7045 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-04", "window": { "start": { "local": "1986-12-04T11:29:56+03:00", "utc": "1986-12-04T08:29:56Z", "ms": 534068996481.9199 }, "end": { "local": "1986-12-04T12:17:56+03:00", "utc": "1986-12-04T09:17:56Z", "ms": 534071876481.9199 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-05", "window": { "start": { "local": "1986-12-05T11:30:21+03:00", "utc": "1986-12-05T08:30:21Z", "ms": 534155421275.463 }, "end": { "local": "1986-12-05T12:18:21+03:00", "utc": "1986-12-05T09:18:21Z", "ms": 534158301275.463 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:39 on Thu 4 Dec to 05:26 on Fri 5 Dec.", "fact": "1986-12-04T05:38:31Z → 1986-12-05T02:26:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 4th, 11:30–12:18 on the 5th.", "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 4th and 0 of 48 on the 5th.", "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 10286 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Erbil, 1986: Thursday 4 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": "1986-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-04", "confidence": "determinate" } ], "quote": "In Erbil, Vināyaka Caturthī 1986 falls on Thursday 4 December. Caturthī runs from 08:39 on Thu 4 Dec to 05:26 on Fri 5 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/vinayaka-chaturthi?on=1986-12-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21839, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1986-12-05T05:26:22+03:00", "utc": "1986-12-05T02:26:22Z", "ms": 534133582253.7045 }, "end": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-05T05:26:22+03:00", "utc": "1986-12-05T02:26:22Z", "ms": 534133582253.7045 }, "end": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-05", "window": { "start": { "local": "1986-12-05T11:30:21+03:00", "utc": "1986-12-05T08:30:21Z", "ms": 534155421275.463 }, "end": { "local": "1986-12-05T12:18:21+03:00", "utc": "1986-12-05T09:18:21Z", "ms": 534158301275.463 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-06", "window": { "start": { "local": "1986-12-06T11:30:47+03:00", "utc": "1986-12-06T08:30:47Z", "ms": 534241846611.17896 }, "end": { "local": "1986-12-06T12:18:47+03:00", "utc": "1986-12-06T09:18:47Z", "ms": 534244726611.17896 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:26 on Fri 5 Dec to 02:45 on Sat 6 Dec.", "fact": "1986-12-05T02:26:22Z → 1986-12-05T23:45:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 5th, 11:31–12:19 on the 6th.", "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 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21839 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Erbil, 1986: Friday 5 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": "1986-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-05", "confidence": "determinate" } ], "quote": "In Erbil, Nāga Pañcamī (Mārgaśīrṣa) 1986 falls on Friday 5 December. Pañcamī runs from 05:26 on Fri 5 Dec to 02:45 on Sat 6 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31530, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 }, "end": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 }, "end": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-06", "window": { "start": { "local": "1986-12-06T11:30:47+03:00", "utc": "1986-12-06T08:30:47Z", "ms": 534241846611.17896 }, "end": { "local": "1986-12-06T12:18:47+03:00", "utc": "1986-12-06T09:18:47Z", "ms": 534244726611.17896 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-07", "window": { "start": { "local": "1986-12-07T11:31:12+03:00", "utc": "1986-12-07T08:31:12Z", "ms": 534328272460.7173 }, "end": { "local": "1986-12-07T12:19:12+03:00", "utc": "1986-12-07T09:19:12Z", "ms": 534331152460.7173 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:45 on Sat 6 Dec to 00:43 on Sun 7 Dec.", "fact": "1986-12-05T23:45:17Z → 1986-12-06T21:42:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 6th, 11:31–12:19 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31530 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Erbil, 1986: Saturday 6 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": "1986-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-06", "confidence": "determinate" } ], "quote": "In Erbil, Campā Ṣaṣṭhī 1986 falls on Saturday 6 December. Ṣaṣṭhī runs from 02:45 on Sat 6 Dec to 00:43 on Sun 7 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31530, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 }, "end": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-06T02:45:17+03:00", "utc": "1986-12-05T23:45:17Z", "ms": 534210316855.45703 }, "end": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-06", "window": { "start": { "local": "1986-12-06T11:30:47+03:00", "utc": "1986-12-06T08:30:47Z", "ms": 534241846611.17896 }, "end": { "local": "1986-12-06T12:18:47+03:00", "utc": "1986-12-06T09:18:47Z", "ms": 534244726611.17896 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-07", "window": { "start": { "local": "1986-12-07T11:31:12+03:00", "utc": "1986-12-07T08:31:12Z", "ms": 534328272460.7173 }, "end": { "local": "1986-12-07T12:19:12+03:00", "utc": "1986-12-07T09:19:12Z", "ms": 534331152460.7173 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:45 on Sat 6 Dec to 00:43 on Sun 7 Dec.", "fact": "1986-12-05T23:45:17Z → 1986-12-06T21:42:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 6th, 11:31–12:19 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31530 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Erbil, 1986: Saturday 6 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": "1986-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-06", "confidence": "determinate" } ], "quote": "In Erbil, Skanda Ṣaṣṭhī 1986 falls on Saturday 6 December. Ṣaṣṭhī runs from 02:45 on Sat 6 Dec to 00:43 on Sun 7 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38907, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 }, "end": { "local": "1986-12-07T23:23:50+03:00", "utc": "1986-12-07T20:23:50Z", "ms": 534371030075.19836 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-07T00:42:46+03:00", "utc": "1986-12-06T21:42:46Z", "ms": 534289365739.2488 }, "end": { "local": "1986-12-07T23:23:50+03:00", "utc": "1986-12-07T20:23:50Z", "ms": 534371030075.19836 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-07", "window": { "start": { "local": "1986-12-07T11:31:12+03:00", "utc": "1986-12-07T08:31:12Z", "ms": 534328272460.7173 }, "end": { "local": "1986-12-07T12:19:12+03:00", "utc": "1986-12-07T09:19:12Z", "ms": 534331152460.7173 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-08", "window": { "start": { "local": "1986-12-08T11:31:39+03:00", "utc": "1986-12-08T08:31:39Z", "ms": 534414698796.24927 }, "end": { "local": "1986-12-08T12:19:39+03:00", "utc": "1986-12-08T09:19:39Z", "ms": 534417578796.24927 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:43 on Sun 7 Dec to 23:24 on Sun 7 Dec.", "fact": "1986-12-06T21:42:46Z → 1986-12-07T20:23:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 7th, 11:32–12:20 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38907 s" }, { "step": "ruling", "text": "Mitra Saptamī, Erbil, 1986: Sunday 7 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": "1986-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-07", "confidence": "determinate" } ], "quote": "In Erbil, Mitra Saptamī 1986 falls on Sunday 7 December. Saptamī runs from 00:43 on Sun 7 Dec to 23:24 on Sun 7 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/ekadashi?on=1986-12-11", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20964, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-12-10T23:52:03+03:00", "utc": "1986-12-10T20:52:03Z", "ms": 534631923314.2069 }, "end": { "local": "1986-12-12T01:16:11+03:00", "utc": "1986-12-11T22:16:11Z", "ms": 534723371493.9961 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-10T23:52:03+03:00", "utc": "1986-12-10T20:52:03Z", "ms": 534631923314.2069 }, "end": { "local": "1986-12-12T01:16:11+03:00", "utc": "1986-12-11T22:16:11Z", "ms": 534723371493.9961 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-12-11", "window": { "start": { "local": "1986-12-11T07:04:50+03:00", "utc": "1986-12-11T04:04:50Z", "ms": 534657890338.4642 }, "end": { "local": "1986-12-11T07:04:50+03:00", "utc": "1986-12-11T04:04:50Z", "ms": 534657890338.4642 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-12-12", "window": { "start": { "local": "1986-12-12T07:05:35+03:00", "utc": "1986-12-12T04:05:35Z", "ms": 534744335430.0714 }, "end": { "local": "1986-12-12T07:05:35+03:00", "utc": "1986-12-12T04:05:35Z", "ms": 534744335430.0714 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:52 on Wed 10 Dec to 01:16 on Fri 12 Dec.", "fact": "1986-12-10T20:52:03Z → 1986-12-11T22:16:11Z" }, { "step": "kaala", "text": "Sunrise is at 07:05 on the 11th and 07:06 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 11th and is not 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 20964 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Erbil, 1986: Thursday 11 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": "1986-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-11", "confidence": "determinate" } ], "quote": "In Erbil, Mokṣadā Ekādaśī 1986 falls on Thursday 11 December. Ekādaśī runs from 23:52 on Wed 10 Dec to 01:16 on Fri 12 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-12-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30463, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1986-12-12T01:16:11+03:00", "utc": "1986-12-11T22:16:11Z", "ms": 534723371493.9961 }, "end": { "local": "1986-12-13T03:06:14+03:00", "utc": "1986-12-13T00:06:14Z", "ms": 534816374251.6339 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-12T01:16:11+03:00", "utc": "1986-12-11T22:16:11Z", "ms": 534723371493.9961 }, "end": { "local": "1986-12-13T03:06:14+03:00", "utc": "1986-12-13T00:06:14Z", "ms": 534816374251.6339 } }, "kaala": "madhyahna", "days": [ { "local_date": "1986-12-12", "window": { "start": { "local": "1986-12-12T11:33:28+03:00", "utc": "1986-12-12T08:33:28Z", "ms": 534760408449.1714 }, "end": { "local": "1986-12-12T12:21:28+03:00", "utc": "1986-12-12T09:21:28Z", "ms": 534763288449.1714 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1986-12-13", "window": { "start": { "local": "1986-12-13T11:33:57+03:00", "utc": "1986-12-13T08:33:57Z", "ms": 534846836802.1317 }, "end": { "local": "1986-12-13T12:21:57+03:00", "utc": "1986-12-13T09:21:57Z", "ms": 534849716802.1317 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:16 on Fri 12 Dec to 03:06 on Sat 13 Dec.", "fact": "1986-12-11T22:16:11Z → 1986-12-13T00:06:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 12th, 11:34–12:22 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30463 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Erbil, 1986: Friday 12 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": "1986-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-12", "confidence": "determinate" } ], "quote": "In Erbil, Akhaṇḍa Dvādaśī 1986 falls on Friday 12 December. Dvādaśī runs from 01:16 on Fri 12 Dec to 03:06 on Sat 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/pradosha-vrata?on=1986-12-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30157, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-12-13T03:06:14+03:00", "utc": "1986-12-13T00:06:14Z", "ms": 534816374251.6339 }, "end": { "local": "1986-12-14T05:14:55+03:00", "utc": "1986-12-14T02:14:55Z", "ms": 534910495130.69336 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-13T03:06:14+03:00", "utc": "1986-12-13T00:06:14Z", "ms": 534816374251.6339 }, "end": { "local": "1986-12-14T05:14:55+03:00", "utc": "1986-12-14T02:14:55Z", "ms": 534910495130.69336 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-12-12", "window": { "start": { "local": "1986-12-12T16:49:21+03:00", "utc": "1986-12-12T13:49:21Z", "ms": 534779361468.27136 }, "end": { "local": "1986-12-12T18:43:37+03:00", "utc": "1986-12-12T15:43:37Z", "ms": 534786217173.75635 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1986-12-13", "window": { "start": { "local": "1986-12-13T16:49:34+03:00", "utc": "1986-12-13T13:49:34Z", "ms": 534865774344.8546 }, "end": { "local": "1986-12-13T18:43:54+03:00", "utc": "1986-12-13T15:43:54Z", "ms": 534872634003.38385 } }, "covered_min": 114, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:06 on Sat 13 Dec to 05:15 on Sun 14 Dec.", "fact": "1986-12-13T00:06:14Z → 1986-12-14T02:14:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:49–18:44 on the 12th, 16:50–18:44 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 0 of 114 minutes on the 12th and 114 of 114 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 30157 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Erbil, 1986: Saturday 13 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": "1986-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-13", "confidence": "determinate" } ], "quote": "In Erbil, Śukla Pradoṣa Vrata 1986 falls on Saturday 13 December. Trayodaśī runs from 03:06 on Sat 13 Dec to 05:15 on Sun 14 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-12-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24359, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1986-12-15T07:35:59+03:00", "utc": "1986-12-15T04:35:59Z", "ms": 535005358882.7594 }, "end": { "local": "1986-12-16T10:04:25+03:00", "utc": "1986-12-16T07:04:25Z", "ms": 535100665300.34314 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-15T07:35:59+03:00", "utc": "1986-12-15T04:35:59Z", "ms": 535005358882.7594 }, "end": { "local": "1986-12-16T10:04:25+03:00", "utc": "1986-12-16T07:04:25Z", "ms": 535100665300.34314 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-12-15", "window": { "start": { "local": "1986-12-15T16:50:06+03:00", "utc": "1986-12-15T13:50:06Z", "ms": 535038605916.0539 }, "end": { "local": "1986-12-15T18:44:32+03:00", "utc": "1986-12-15T15:44:32Z", "ms": 535045472160.80725 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "1986-12-16", "window": { "start": { "local": "1986-12-16T16:50:25+03:00", "utc": "1986-12-16T13:50:25Z", "ms": 535125024577.8188 }, "end": { "local": "1986-12-16T18:44:53+03:00", "utc": "1986-12-16T15:44:53Z", "ms": 535131893449.3371 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 07:36 on Mon 15 Dec to 10:04 on Tue 16 Dec.", "fact": "1986-12-15T04:35:59Z → 1986-12-16T07:04:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:50–18:45 on the 15th, 16:50–18:45 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 114 of 114 minutes on the 15th and 0 of 114 on the 16th.", "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 24359 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Erbil, 1986: Monday 15 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": "1986-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-15", "confidence": "determinate" } ], "quote": "In Erbil, Dattātreyotpatti (Datta Jayanti) 1986 falls on Monday 15 December. Pūrṇimā runs from 07:36 on Mon 15 Dec to 10:04 on Tue 16 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/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": "/erbil/festivals/1986/sankashta-chaturthi?on=1986-12-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2614, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1986-12-19T17:33:05+03:00", "utc": "1986-12-19T14:33:05Z", "ms": 535386784780.16034 }, "end": { "local": "1986-12-20T19:47:46+03:00", "utc": "1986-12-20T16:47:46Z", "ms": 535481265973.98035 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-19T17:33:05+03:00", "utc": "1986-12-19T14:33:05Z", "ms": 535386784780.16034 }, "end": { "local": "1986-12-20T19:47:46+03:00", "utc": "1986-12-20T16:47:46Z", "ms": 535481265973.98035 } }, "kaala": "moonrise", "days": [ { "local_date": "1986-12-19", "window": { "start": { "local": "1986-12-19T19:30:35+03:00", "utc": "1986-12-19T16:30:35Z", "ms": 535393835212.9246 }, "end": { "local": "1986-12-19T19:30:35+03:00", "utc": "1986-12-19T16:30:35Z", "ms": 535393835212.9246 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-12-20", "window": { "start": { "local": "1986-12-20T20:31:20+03:00", "utc": "1986-12-20T17:31:20Z", "ms": 535483880422.01587 }, "end": { "local": "1986-12-20T20:31:20+03:00", "utc": "1986-12-20T17:31:20Z", "ms": 535483880422.01587 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:33 on Fri 19 Dec to 19:48 on Sat 20 Dec.", "fact": "1986-12-19T14:33:05Z → 1986-12-20T16:47:46Z" }, { "step": "kaala", "text": "Moonrise is at 19:31 on the 19th and 20:31 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 19th and is not on the 20th.", "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 2614 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Erbil, 1986: Friday 19 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": "1986-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-19", "confidence": "determinate" } ], "quote": "In Erbil, Saṅkaṣṭa Caturthī 1986 falls on Friday 19 December. Caturthī runs from 17:33 on Fri 19 Dec to 19:48 on Sat 20 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/sankashta-chaturthi?on=1986-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/ekadashi?on=1986-12-27", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32354, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1986-12-26T22:14:44+03:00", "utc": "1986-12-26T19:14:44Z", "ms": 536008483841.4011 }, "end": { "local": "1986-12-27T20:03:45+03:00", "utc": "1986-12-27T17:03:45Z", "ms": 536087024936.59143 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-26T22:14:44+03:00", "utc": "1986-12-26T19:14:44Z", "ms": 536008483841.4011 }, "end": { "local": "1986-12-27T20:03:45+03:00", "utc": "1986-12-27T17:03:45Z", "ms": 536087024936.59143 } }, "kaala": "sunrise", "days": [ { "local_date": "1986-12-27", "window": { "start": { "local": "1986-12-27T07:13:58+03:00", "utc": "1986-12-27T04:13:58Z", "ms": 536040838071.67487 }, "end": { "local": "1986-12-27T07:13:58+03:00", "utc": "1986-12-27T04:13:58Z", "ms": 536040838071.67487 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1986-12-28", "window": { "start": { "local": "1986-12-28T07:14:18+03:00", "utc": "1986-12-28T04:14:18Z", "ms": 536127258360.964 }, "end": { "local": "1986-12-28T07:14:18+03:00", "utc": "1986-12-28T04:14:18Z", "ms": 536127258360.964 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:15 on Fri 26 Dec to 20:04 on Sat 27 Dec.", "fact": "1986-12-26T19:14:44Z → 1986-12-27T17:03:45Z" }, { "step": "kaala", "text": "Sunrise is at 07:14 on the 27th and 07:14 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32354 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Erbil, 1986: Saturday 27 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": "1986-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-27", "confidence": "determinate" } ], "quote": "In Erbil, Saphalā Ekādaśī 1986 falls on Saturday 27 December. Ekādaśī runs from 22:15 on Fri 26 Dec to 20:04 on Sat 27 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/erbil/festivals/1986/ekadashi?on=1986-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/pradosha-vrata?on=1986-12-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 969, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1986-12-28T17:12:38+03:00", "utc": "1986-12-28T14:12:38Z", "ms": 536163157812.86774 }, "end": { "local": "1986-12-29T13:49:39+03:00", "utc": "1986-12-29T10:49:39Z", "ms": 536237379407.27356 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-28T17:12:38+03:00", "utc": "1986-12-28T14:12:38Z", "ms": 536163157812.86774 }, "end": { "local": "1986-12-29T13:49:39+03:00", "utc": "1986-12-29T10:49:39Z", "ms": 536237379407.27356 } }, "kaala": "pradosha", "days": [ { "local_date": "1986-12-28", "window": { "start": { "local": "1986-12-28T16:56:29+03:00", "utc": "1986-12-28T13:56:29Z", "ms": 536162188876.5457 }, "end": { "local": "1986-12-28T18:50:54+03:00", "utc": "1986-12-28T15:50:54Z", "ms": 536169053935.6064 } }, "covered_min": 98, "window_min": 114, "qualifies": true }, { "local_date": "1986-12-29", "window": { "start": { "local": "1986-12-29T16:57:10+03:00", "utc": "1986-12-29T13:57:10Z", "ms": 536248629964.2588 }, "end": { "local": "1986-12-29T18:51:32+03:00", "utc": "1986-12-29T15:51:32Z", "ms": 536255491758.3642 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:13 on Sun 28 Dec to 13:50 on Mon 29 Dec.", "fact": "1986-12-28T14:12:38Z → 1986-12-29T10:49:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:56–18:51 on the 28th, 16:57–18:52 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 98 of 114 minutes on the 28th and 0 of 114 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 969 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Erbil, 1986: Sunday 28 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": "1986-12-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-28", "confidence": "determinate" } ], "quote": "In Erbil, Kṛṣṇa Pradoṣa Vrata 1986 falls on Sunday 28 December. Trayodaśī runs from 17:13 on Sun 28 Dec to 13:50 on Mon 29 Dec and covers 98 of 114 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/erbil/festivals/1986/pradosha-vrata?on=1986-12-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/erbil/festivals/1986/shivaratri?on=1986-12-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "95446", "year": 1986, "local_date": "1986-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34495, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1986-12-29T13:49:39+03:00", "utc": "1986-12-29T10:49:39Z", "ms": 536237379407.27356 }, "end": { "local": "1986-12-30T10:04:57+03:00", "utc": "1986-12-30T07:04:57Z", "ms": 536310296709.1349 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1986-12-29T13:49:39+03:00", "utc": "1986-12-29T10:49:39Z", "ms": 536237379407.27356 }, "end": { "local": "1986-12-30T10:04:57+03:00", "utc": "1986-12-30T07:04:57Z", "ms": 536310296709.1349 } }, "kaala": "nishita", "days": [ { "local_date": "1986-12-28", "window": { "start": { "local": "1986-12-28T23:41:33+03:00", "utc": "1986-12-28T20:41:33Z", "ms": 536186492848.0232 }, "end": { "local": "1986-12-29T00:29:33+03:00", "utc": "1986-12-28T21:29:33Z", "ms": 536189372848.0232 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1986-12-29", "window": { "start": { "local": "1986-12-29T23:42:02+03:00", "utc": "1986-12-29T20:42:02Z", "ms": 536272921692.1542 }, "end": { "local": "1986-12-30T00:30:02+03:00", "utc": "1986-12-29T21:30:02Z", "ms": 536275801692.1542 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:50 on Mon 29 Dec to 10:05 on Tue 30 Dec.", "fact": "1986-12-29T10:49:39Z → 1986-12-30T07:04:57Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:42–00:30 on the 28th, 23:42–00:30 on the 29th.", "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 28th and 48 of 48 on the 29th.", "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 34495 s" }, { "step": "ruling", "text": "Śivarātri, Erbil, 1986: Monday 29 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": "1986-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1986-12-29", "confidence": "determinate" } ], "quote": "In Erbil, Śivarātri 1986 falls on Monday 29 December. Caturdaśī runs from 13:50 on Mon 29 Dec to 10:05 on Tue 30 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/erbil/festivals/1986/shivaratri?on=1986-12-29", "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" } }